CN209226640U - fluid sterilizing device - Google Patents

Abstract

The utility model discloses a fluid sterilizing equipment, it includes body, circuit board and light source. The body comprises a first reaction cavity and a second reaction cavity which are spaced from each other, the first reaction cavity is provided with a first opening and a second opening, the second reaction cavity is provided with a third opening and a fourth opening, and the body allows fluid to sequentially pass through the first opening, the second opening, the third opening and the fourth opening. The circuit board is arranged on the body. The light source is disposed on the circuit board and is used for emitting a first sterilizing light and a second sterilizing light to the second opening and the third opening respectively.

Description

Fluid Sterilization Device

technical field

The utility model relates to a fluid sterilizing device, in particular to a fluid sterilizing device with multiple reaction chambers.

Background technique

Traditional sterilization devices generally adopt a one-time sterilization method. However, the sterilization rate of a sterilization is usually limited. In order to increase the sterilization rate, most of them must adopt high-power sterilization light source or complex flow path design, but this will lead to an increase in cost and complexity of the manufacturing process.

Utility model content

The utility model relates to a fluid sterilizing device, which can improve the aforementioned existing problems.

According to an embodiment of the present invention, a fluid sterilizing device is proposed. The fluid sterilizing device includes a body, a circuit board and a light source. The body includes a first reaction chamber and a second reaction chamber spaced apart from each other. The first reaction chamber has a first opening and a second opening, and the second reaction chamber has a third opening and a fourth opening. The body allows A fluid passes through the first reaction chamber and the second reaction chamber in sequence. The circuit board is configured on the body. The light source is arranged on the circuit board and used to emit a sterilizing light, part of the sterilizing light is incident on the first reaction chamber through the second opening, and another part of the sterilizing light is incident on the second reaction chamber through the third opening.

The utility model has the advantage that the first reaction chamber and the second reaction chamber provide a vertical flow channel, and the connecting chamber provides a horizontal flow channel, which can prolong the flow time of the fluid inside the fluid sterilizing device and increase the impact of the sterilizing light on the fluid. sterilization rate. After the fluid passes through the reaction chambers of multiple tube bodies, it is sterilized multiple times, which can further increase the sterilization rate of the fluid. The embodiment of the utility model can determine the number of light emitting elements without increasing the total power of the light source, and can avoid increasing the selection cost of the light source.

In order to have a better understanding of the above and other aspects of the present utility model, the following specific examples are given below, and the accompanying drawings are described in detail as follows:

Description of drawings

FIG. 1A and FIG. 1B are the appearance diagrams of a fluid sterilization device according to an embodiment of the present invention;

FIG. 1C and FIG. 1D are exploded views of the fluid sterilizing device of FIG. 1A;

Figure 1E is a sectional view of the fluid sterilizing device of Figure 1B along the direction 1E-1E';

Fig. 2 is a relationship diagram between the flow rate and the sterilization capacity of the fluid sterilizing device in Fig. 1E;

Fig. 3 is a cross-sectional view of a fluid sterilizing device according to another embodiment of the present invention;

Fig. 4 is a cross-sectional view of a fluid sterilizing device according to another embodiment of the present invention;

Fig. 5A is an exploded view of a fluid sterilizing device according to another embodiment of the present invention;

Fig. 5B is a cross-sectional view of the assembled fluid sterilizing device of Fig. 5A;

Fig. 5C is an exploded view of a fluid sterilizing device according to another embodiment of the present invention;

6A to 6C are diagrams showing the relationship between the time and the luminous power of the light source in several embodiments of the present invention;

Fig. 7A is a cross-sectional view of a fluid sterilizing device according to another embodiment of the present invention;

Fig. 7B is a graph showing the relationship between the time and the luminous power of the light source in the fluid sterilizing device of Fig. 7A.

Symbol Description

100, 200, 300, 400, 500: fluid sterilization device

110, 210, 410, 410’: body

111, 211, 411, 411’: base

111a, 411a: communicating cavity

111b, 411b: the first hole

111c, 411c: the second hole

112, 412: the first pipe body

113, 413: the second pipe body

111h: Third piercing

111s1: upper surface

111s2: lower surface

120: circuit board

120h: First piercing

120s1: upper surface

120s2: lower surface

130, 230: light source

131: the first light-emitting element

132: Second light-emitting element

140: Partition board

140a: opening

150: transparent board

140h: Second piercing

160: outer cover

170: shell

211a, 411d: partition

211a1: the first light guide

211a2: second light guide part

380: the first filter element

390: Second filter element

4111': Pedestal Bottom

4112': base face piece

580: Light Intensity Sensor

A1, A2, A3, A4: area

AX1, AX2: central axis

C1, C2, C3: curves

H1, H2: Length

L1: the first germicidal light

L2: Second germicidal light

F1: fluid

P1: the first reaction chamber

P11: First opening

P12: Second opening

P2: Second reaction chamber

P21: Third opening

P22: Fourth opening

T11, T12, T21, T22, T31, T32: time interval

Detailed ways

Please refer to FIG. 1A-FIG. 1E. FIG. 1A and FIG. 1B show the appearance of a fluid sterilizing device 100 according to an embodiment of the present invention. FIG. 1C and FIG. 1D show an exploded view of the fluid sterilizing device 100 in FIG. 1A. 1E is a cross-sectional view of the fluid sterilizing device 100 in FIG. 1B along the direction 1E-1E′.

As shown in FIGS. 1A-1D , the fluid sterilizing device 100 includes a housing 170 , a body 110 , a transparent plate 150 , a partition plate 140 , a light source 130 , a circuit board 120 and an outer cover 160 from bottom to top. The body 110 includes a base 111 , a first tube 112 and a second tube 113 . As shown in FIGS. 1A-1E , the base 111 has a communication cavity 111 a, a first hole 111 b and a second hole 111 c. There is a first reaction chamber P1 inside the first pipe body 112 . There is a second reaction chamber P2 inside the second pipe body 113 . The first reaction chamber P1 has a first opening P11 and a second opening P12, and the second reaction chamber P2 has a third opening P21 and a fourth opening P22. The second opening P12 of the first tube 112 is connected to the first hole 111b. The third opening P21 of the second tube 113 is connected to the second hole 111c. The first reaction chamber P1 and the second reaction chamber P2 are spaced apart from each other and parallel to each other. In other embodiments, the first reaction chamber P1 and the second reaction chamber P2 may also form an angle. In this embodiment, the first reaction chamber P1 and the second reaction chamber P2 provide a vertical flow channel, and the communication chamber 111a provides a horizontal flow channel, which can prolong the flow time of the fluid F1 inside the fluid sterilizing device 100 to further increase sterilization Sterilization rate of light on fluid F1.

The body 110 allows the fluid F1 to sequentially pass through the first opening P11 , the first reaction chamber P1 , the second opening P12 , the communication chamber 111 a , the third opening P21 , the second reaction chamber P1 and the fourth opening P22 . Fluid F1 can be gas or liquid, such as external liquid, such as liquid in a bottle (such as water), liquid in a factory pipeline, tap water and other water sources. The circuit board 120 is disposed on the body 110 . The light source 130 is arranged on the circuit board 120, and is used to emit the first germicidal light L1 and the second germicidal light L2. The first germicidal light L1 passes through the second opening P12 and enters the first reaction chamber P1, and the second germicidal light L2 passes through the second opening P12. The third opening P21 is incident on the second reaction chamber P2. In this way, the fluid F1 is sterilized for the first time in the first reaction chamber P1 and sterilized for the second time in the second reaction chamber P2. Compared with the primary sterilization, the sterilization rate of the secondary sterilization is higher.

Although two tubes of the main body 110 are described as an example in the above embodiment, in another embodiment, the number of tubes of the main body 110 may be more than two, such as k, where k is equal to or exceeds three. In this way, the fluid F1 is sterilized k times after passing through the reaction chambers of k tubes, which can further increase the sterilization rate of the fluid F1.

As shown in Figure 1E, the base 111 has an upper surface 111s1 and a lower surface 111s2, the communication cavity 111a extends from the upper surface 111s1 to the first hole 111b and the second hole 111c, and the first hole 111b and the second hole 111c extend from the communication cavity 111a extends to lower surface 111s2.

The base 111 , the first tube body 112 and the second tube body 113 can be fabricated separately and then assembled together. Although not shown in the figure, the second opening P12 of the first tube body 112 and the third opening P21 of the second tube body 113 can be screwed into the first hole 111b and the second hole 111c respectively. In another embodiment, the base 111 , the first tube body 112 and the second tube body 113 can be integrally formed of the same material in the same manufacturing process, such as plastic material formed by injection molding technology. The material of the first tube body 112 and the second tube body 113 can be quartz or polytetrafluoroethylene (PTFE). Compared with quartz, polytetrafluoroethylene has the advantages of high design flexibility, low cost and high rigidity. In other embodiments, the first tube body 112 and the second tube body 113 can be a double-layer structure, that is, made of two materials, and the inner layer or inner surface of the first tube body 112 and the second tube body 113 is quartz or Polytetrafluoroethylene, the outer layer or outer surface of the first tube body 112 and the second tube body 113 is polypropylene, which means that the material of the inner layer or inner surface of the first tube body 112 and the second tube body 113 is the same as that of the first tube body 112 and the second tube body 113. The material of the outer layer or outer surface of the tube body 112 and the second tube body 113 is different.

The circuit board 120 has an upper surface 120s1 and a lower surface 120s2 opposite to each other. The light source 130 is disposed on the lower surface 120s2 facing the communication cavity 111a. The light source 130 can be a plurality of light-emitting elements, and these light-emitting elements can be light-emitting diodes. The first germicidal light L1 and/or the second germicidal light L2 generated by the light source 130 can be ultraviolet light with a bactericidal effect, so these light-emitting elements can be UV LEDs. Compared to mercury lamps, LEDs start up faster, are smaller and consume less power.

As shown in FIG. 1E , the light source 130 includes at least one first light emitting element 131' and at least one second light emitting element 132'. The first light emitting element 131' emits the first germicidal light L1, which is incident on the first reaction chamber P1, and the second light emitting element 132' emits the second germicidal light L2, which is incident on the second reaction chamber P2. The light-emitting optical axis of the first light-emitting element 131' coincides with the central axis AX1 of the first reaction chamber P1, so that the first sterilizing light L1 of the first light-emitting element 131' expands to both sides of the central axis AX1 of the first reaction chamber P1 Sterilize fluid F1. The light-emitting optical axis of the second light-emitting element 132' coincides with the central axis AX2 of the second reaction chamber P2, so that the second germicidal light L2 of the second light-emitting element 132' expands to both sides of the central axis AX2 of the second reaction chamber P2 Sterilize fluid F1. The positions of the first light-emitting element 131' and the second light-emitting element 132' are opposite to the second opening P12 and the third opening P21, respectively. In this way, the first sterilizing light L1 and the second sterilizing light L2 emitted by the first light-emitting element 131' and the second light-emitting element 132' respectively enter the first reaction chamber P1 and the second reaction chamber P1 through the second opening P12 and the third opening P21. The reaction chamber P2 is used to sterilize the fluid F1. In other embodiments, the light source 130 may include a plurality of first light emitting elements 131 and 131' and a plurality of second light emitting elements 132 and 132'. In other embodiments, a plurality of first light-emitting elements 131 and 131' are arranged around the central axis AX1 of the first reaction chamber P1, and a plurality of second light-emitting elements 132 are arranged around the central axis AX2 of the second reaction chamber P2, which can achieve a similar Uniform sterilization effect.

In addition, the opening area A1 of the second opening P12 is approximately equal to n times the light emitting area A2 of the first light emitting element 131 ′, wherein n is equal to or greater than 1, so that the fluid sterilization device 100 can provide a desired sterilization rate. Similarly, the opening area A3 of the third opening P21 is approximately equal to m times the light emitting area A4 of the second light emitting element 132 ′, wherein m is equal to or greater than 1, so that the fluid sterilizing device 100 can provide a desired sterilization rate. In an embodiment, the values of n and m may be the same or different. In addition, the length H1 of the first reaction chamber P1 is at least about 15 times or more than the side length of the light-emitting area A2 of the first light-emitting element 131', and the length H2 of the second reaction chamber P2 is at least about ' is 15 times or more than the side length of the luminous area A4, so that the fluid F1 flows in the fluid sterilizing device 100 for a predetermined time, so that the fluid sterilizing device 100 can provide a desired sterilization rate. In one embodiment, the light emitting area A2 of the first light emitting element 131' and/or the light emitting area A4 of the second light emitting element 132' may be between 3.5×3.5 square millimeters (mm ² ) and 25×25 mm ² . The side length of the light-emitting area A2 of a light-emitting element 131' and/or the side length of the light-emitting area A4 of the second light-emitting element 132' can be between 3.5 millimeters (mm) and 25 mm, and the length H1 of the first reaction chamber P1 And/or the length H2 of the second reaction chamber P2 may be between 15 millimeters (mm) and 100 mm.

The light source 130 includes several light emitting elements, and the sum of the power of these light emitting elements may be approximately equal to the power of one light emitting element (such as the light source 130 shown in FIG. 3 ). In detail, no matter how many light-emitting elements are included in the light source of the fluid sterilizing device 100 of the embodiment of the present utility model, the total power of the light source will not be increased. The quantity can avoid increasing the selection cost of the light source.

In addition, under the condition that the total power of the light source remains unchanged, the power of the first light-emitting element 131' and the second light-emitting element 132' can be properly configured to avoid overheating of the light-emitting elements and shortening the service life. For example, the total power of the light source required for sterilization is 100mW. If the total power is evenly distributed, that is, the power of the first light-emitting element 131' and the second light-emitting element 132' are respectively 50mW, the light-emitting element will be damaged due to the accumulation of heat on the light-emitting element. Reduced service life due to light decay.

Several light-emitting elements of the light source 130 can individually emit sterilizing lights of different light intensities at different time points, thereby adjusting the calorific value of the light-emitting elements. In one embodiment, in the first 10-second sterilization process, the first The light-emitting element 131' can emit light of 25% of the total power, that is, 25 milliwatts of germicidal light, and the second light-emitting element 132' can emit light of 75% of the total power, that is, 75 milliwatts of germicidal light. During a 10-second sterilization process, the first light-emitting element 131' can emit light of 75% of the total power, that is, 75 milliwatts of germicidal light, while the second light-emitting element 132' can emit light of 25% of the total power, that is, 25 milliwatts of germicidal light, that is, the load power ratios of the first light-emitting element 131' and the second light-emitting element 132' are exchanged; in the third 10-second sterilization process, the first light-emitting element 131' can emit 25 milliwatts The sterilizing light of 75 milliwatts can be emitted by the second light-emitting element 132'; in the fourth 10-second sterilization process, the first light-emitting element 131' can emit 75 milliwatts of germicidal light, and the second luminous Element 132' can emit 25 milliwatts of germicidal light; . . . and so on. The total luminous power of the aforementioned light source 130 maintains a constant value, such as 100 milliwatts, but the embodiment of the present invention is not limited thereto.

The partition plate 140 has an opening 140 a to accommodate the light source 130 . In other words, due to the design of the opening 140 a, the light source 130 will not interfere with the solid material of the partition plate 140 . Moreover, since the light source 130 is located in the opening 140a, the length dimension (such as the dimension along the Z axis) of the fluid sterilizing device 100 can be shortened. In one embodiment, the spacer plate 140 is, for example, a metal plate.

As shown in FIG. 1E , the transparent plate 150 is pressed between the partition plate 140 and the body 110 . For example, the transparent plate 150 is pressed between the spacer plate 140 and the upper surface 111s1 of the base 111 of the main body 110 . Since the light-transmitting plate 150 is pressed between the spacer plate 140 and the body 110, the light-transmitting plate 150 is in close contact with the body 110 and the light-transmitting plate 150 is in close contact with the spacer plate 140, so that the light-transmitting plate 150 and the body can be closed. 110 and the gap between the light-transmitting plate 150 and the spacer plate 140, so as to prevent the fluid F1 from flowing from between the light-transmitting plate 150 and the body 110 and between the light-transmitting plate 150 and the spacer plate 140 to the circuit board 120 and and/or the light source 130 , thereby preventing the fluid F1 from causing the circuit board 120 and/or the light source 130 to fail.

As shown in FIG. 1E , the circuit board 120 , the spacer plate 140 and the base 111 respectively have a first through hole 120h , a second through hole 140h and a third through hole 111h . The first through hole 120h, the second through hole 140h and the third through hole 111h are substantially coincident. Although not shown in the figure, the fluid sterilizing device 100 further includes at least one fixing element, which passes through the first through hole 120h, the second through hole 140h and the third through hole 111h to fix the circuit board 120, the spacer plate 140 and the base 111. relative position. In one embodiment, the fixing element is, for example, a screw, and the third through hole 111h is a screw hole. Through screwing, the fixing element can fix the relative positions of the circuit board 120 , the spacer plate 140 and the base 111 .

In one embodiment, the transparent plate 150 is, for example, a quartz plate. As shown in FIG. 1E , the outer cover 160 covers the circuit board 120 to protect the circuit board 120 . In one embodiment, the outer cover 160 is in contact with the circuit board 120 to convect the heat of the circuit board 120 to the outside. In an embodiment, the outer cover 160 may be made of a material with excellent thermal conductivity, such as copper, aluminum, iron or other suitable thermal conductivity materials.

As shown in FIG. 1E , the housing 170 can accommodate the main body 110 , the circuit board 120 , the light source 130 , the partition plate 140 , the light-transmitting plate 150 and the outer cover 160 to protect these components.

Please refer to FIG. 2 , which shows the relationship between the flow rate and the sterilization capacity of the fluid sterilizing device 100 in FIG. 1E . In the drawings, the horizontal axis is the flow rate (liter/min), and the vertical axis is the bacterial reduction rate expressed in logarithm (E. coli log reduction). Curve C1 is the sterilizing rate curve of the fluid sterilizing device 100 made of polytetrafluoroethylene for the first tube body 112 and the second tube body 113, and curve C2 is for a single tube (a single tube can only provide one sterilization) made of quartz The sterilizing rate curve of the fluid sterilizing device, and the curve C3 is the sterilizing rate curve of the fluid sterilizing device made of polytetrafluoroethylene for a single tube (a single tube can only provide one sterilization). Curves C1, C2 and C3 are the experimental results under the same conditions where the bacterial concentration is 5.2e5 (CFU/ml) and the power of the light source is 60 milliwatts (mW).

Comparing the curves C1 and C2, it can be seen that since the fluid sterilizing device 100 of the utility model provides secondary sterilization, even if the tube body material uses polytetrafluoroethylene, the sterilizing rate of the fluid sterilizing device 100 is still much higher than that of a single tube made of quartz. A fluid sterilizing device. Comparing the curves C1 and C3, it can be seen that compared with one-time sterilization, the fluid sterilization device 100 according to the embodiment of the present invention can have a higher sterilization rate by adopting multiple sterilizations.

Please refer to FIG. 3 , which shows a cross-sectional view of a fluid sterilizing device 200 according to another embodiment of the present invention. The fluid sterilizing device 200 includes a body 210 , a circuit board 120 , a light source 230 , a partition plate 140 , a transparent plate 150 , an outer cover 160 and a housing 170 . The fluid sterilizing device 200 of the embodiment of the present utility model has similar or identical features to the aforementioned fluid sterilizing device 100, the difference is that the light source 230 of the fluid sterilizing device 200 is facing the gap between the first reaction chamber P1 and the second reaction chamber P2 The area, that is, the light source 230 is not facing the first reaction chamber P1 and the second reaction chamber P2.

As shown in FIG. 3 , the light source 230 includes at least one light emitting element, and the light emitting element is not facing the first reaction chamber P1 and the second reaction chamber P2 . The main body 210 includes a base 211 , a first tube body 112 and a second tube body 113 . The base 211 has similar or same features as the aforementioned base 111 , except that the base 211 includes a partition 211 a located between the first reaction chamber P1 and the second reaction chamber P2 .

Since the light from the light source 230 has a light angle, the light from the light source 230 can be divided into the first sterilizing light L1 and the second sterilizing light L2 . The partition part 211a has opposite first light guide part 211a1 and second light guide part 211a2, wherein the first light guide part 211a1 can guide the first germicidal light L1 to the first reaction chamber P1, and the second light guide part 211a2 can The second germicidal light L2 is directed to the second reaction chamber P2. As shown in the figure, the first light guide part 211a1 and the second light guide part 211a2 are, for example, two opposite slopes, and the included angle A1 therebetween may be between about 30 degrees and about 120 degrees.

In another embodiment, the fluid sterilizing device 200 further includes a light guide plate (not shown), which can cover the light source 230 . The light guide plate can provide a light guide effect similar to or the same as that of the first light guide part 211a1 and the second light guide part 211a2. In this case, the fluid sterilizing device 200 can omit the first light guide part 211a1 and the second light guide part 211a2, that is, the partition part 211a in FIG. 3 can be changed to the corresponding structure in FIG. 1E.

Please refer to FIG. 4 , which shows a cross-sectional view of a fluid sterilizing device 300 according to another embodiment of the present invention. The fluid sterilizing device 300 includes a body 110 , a circuit board 120 , a light source 130 , a partition plate 140 , a transparent plate 150 , an outer cover 160 , a housing 170 , a first filter element 380 and a second filter element 390 . The fluid sterilizing device 300 of the embodiment of the present invention has similar or identical features to the aforementioned fluid sterilizing device 100, except that the fluid sterilizing device 300 further includes at least one filter element.

In detail, the first filter element 380 is disposed in the first reaction chamber P1, and the second filter element 390 is disposed in the second reaction chamber P2. The fluid F1 sequentially passes through the first opening P11 , the first filter element 380 , the second opening P12 , the communication chamber 111 a , the third opening P21 , the second filter element 390 and the fourth opening P22 . The impurities of the fluid F1 can be filtered out by the filter element to purify the fluid F1. In another embodiment, the fluid sterilizing device 300 may omit one of the first filter element 380 and the second filter element 390 . In addition, as shown in FIG. 4 , the first filter element 380 can fill at least a part of the first reaction chamber P1 , and the second filter element 390 can also fill at least a part of the second reaction chamber P2 .

Please refer to FIG. 5A and FIG. 5B , FIG. 5A shows an exploded view of a fluid sterilizing device 400 according to another embodiment of the present invention, and FIG. 5B shows a cross-sectional view of the assembled fluid sterilizing device 400 in FIG. 5A .

The fluid sterilizing device 400 includes a body 410 , a circuit board 120 , a light source 130 , a partition plate 140 , a transparent plate 150 , an outer cover 160 and a housing 170 . The body 410 includes a base 411 , a first tube 412 and a second tube 413 . The base 411 has a communication cavity 411a, a first hole 411b, a second hole 411c, a partition 411d and a groove 411r. The partition 411d is located between the first reaction chamber P1 and the second reaction chamber P2. The groove 411r extends from the bottom surface of the communication cavity 411a to the partition 411d in the light irradiation direction. The position of the groove 411r roughly corresponds to the area between the first light emitting element and the second light emitting element. The arrangement of the groove 411r can reduce the blocking of light by the partition 411d. For example, the first germicidal light L1 of the first light emitting element of the light source 130 can be incident into the first tube body 412 and the second tube body 413, and the second germicidal light L2 of the second light emitting element can be incident into the first tube body 412. And inside the second pipe body 413.

The arrangement of the groove 411r can also change the flow velocity, flow direction and/or flow path of the fluid F1 to achieve the purpose of turbulence. It also improves the efficiency of sterilization by turbulence. The depth of the groove 411r is greater than 2 cm. In another embodiment, the depth of the groove 411r is about 5 cm to 8 cm. The width of the groove 411r is smaller than the diameters of the first reaction chamber P1 and the second reaction chamber P2 , that is, smaller than the inner diameters of the first tube body 412 and the second tube body 413 .

Please refer to FIG. 5C, in this embodiment, the base 411' of the body 410' includes a base bottom piece 4111' and a base surface piece 4112', and the base bottom piece 4111' can fit on the base surface piece 4112' Above, the material of the base surface part 4112' is polytetrafluoroethylene, the first pipe body 412 and the second pipe body 413 of the main body 411' are connected with the base bottom part 4111', and the second pipe body can be simultaneously formed in an integral manner. A tube body 412, a second tube body 413 and a base bottom part 4111'.

Please refer to FIG. 6A to FIG. 6C , which illustrate the relationship between the time and the luminous power of the light source according to several embodiments of the present invention.

As shown in FIG. 6A , in the time interval T11 , when the fluid F1 does not flow, the light source 130 will continue to emit light in a low current (low power) state. In the time interval T12, when the fluid F1 flows, the fluid sterilizing device activates the sterilizing function, and the light source 130 emits light in a high current (high power) state.

As shown in FIG. 6B , in the time interval T21 , when the fluid F1 is not flowing, the light source 130 emits light in the form of a pulse signal. In the time interval T22, when the fluid F1 flows, the fluid sterilizing device activates the sterilizing function, and the light source 130 will continue to emit light.

As shown in FIG. 6C , when an external signal is activated, the fluid sterilizing device emits sterilizing light at least for a period of time t1 , and at least delays for a period of time t2 to discharge water. When the fluid device receives an external signal, the water stop is terminated, and the germicidal light is stopped after a delay of at least a period of time.

In the light-emitting mode of FIG. 6A to FIG. 6C , no matter whether the fluid F1 in the fluid sterilizing device is flowing or not, the light source 130 keeps sterilizing the fluid F1 in the fluid sterilizing device.

Please refer to FIG. 7A to FIG. 7B. FIG. 7A shows a cross-sectional view of a fluid sterilizing device 500 according to another embodiment of the present invention, and FIG. 7B shows the relationship between the time of the fluid sterilizing device 500 in FIG. 7A and the luminous power of the light source . The fluid sterilizing device 500 includes a body 210 , a circuit board 120 , a light source 230 , a partition plate 140 , a transparent plate 150 , an outer cover 160 , a housing 170 and a light intensity sensor 580 . The light intensity sensor 580 is disposed on the circuit board 120 and used for sensing light intensity.

In the initial time interval T31, the light intensity sensor 580 detects the light intensity of the light source 230, and turns on about 50% of the unit pulse time in a unit time to achieve a sterilizing effect. Over time, for example, in the time interval T32, the light intensity sensor 580 continuously detects the light intensity of the light source 230, and when the light intensity drops to 50% due to light decay, the unit pulse time of 100% is turned on, so that the sterilizing effect does not change. Deteriorated due to light decay. During the sterilization process, in the time interval T31, the dose is approximately equal to 50% of the pulse time multiplied by the light intensity, and in the time interval T32, the dose is approximately equal to 100% of the pulse time multiplied by 50% of the light intensity. Thus, the dose in time interval T31 is equal to the dose in time interval T32. In this way, by adjusting the unit pulse time of turning on the light source 230 , the bactericidal dose can be kept constant.

In summary, although the present invention is disclosed in combination with the above embodiments, it is not intended to limit the present invention. Those skilled in the technical field to which the utility model belongs can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the present utility model should be defined by the appended claims.

Claims (19)

1. A fluid sterilizing device, characterized in that, the fluid sterilizing device comprises: A body, including a first reaction chamber and a second reaction chamber spaced apart from each other, the body allows a fluid to pass through the first reaction chamber and the second reaction chamber in sequence; a circuit board configured on the body; and The light source is configured on the circuit board and used to emit a sterilizing light, at least part of the sterilizing light is incident on the first reaction chamber, and at least another part of the sterilizing light is incident on the second reaction chamber. 2. The fluid sterilizing device according to claim 1, characterized in that, the fluid sterilizing device further comprises: At least one filter element is arranged in at least one of the first reaction chamber and the second reaction chamber. 3. The fluid sterilizing device according to claim 1, wherein the body comprises a base, the base has a communication chamber, the body allows a fluid to pass through the first reaction chamber, the communication chamber in sequence and the second reaction chamber. 4. The fluid sterilizing device according to claim 3, wherein the body further comprises a first tube body and a second tube body, wherein the first reaction chamber is located in the first tube body, and the second tube body The reaction chamber is located in the second pipe body. 5 . The fluid sterilizing device according to claim 3 , wherein the base of the body comprises a base surface and a base bottom, and the base surface fits on the base bottom. 6 . The fluid sterilizing device according to claim 5 , wherein the base of the body comprises a base surface and a base bottom, and the base surface is made of polytetrafluoroethylene. 7. The fluid sterilizing device according to claim 4, wherein the first tube and the second tube are connected to the base. 8. The fluid sterilizing device according to claim 4, wherein the material of the inner surface of the first pipe body and the inner surface of the second pipe body is the same as that of the outer surface of the first pipe body and the second pipe body. The material of the outer surface of the body is different. 9. The fluid sterilizing device according to claim 8, characterized in that, the inner surface of the first tube body and the inner surface of the second tube body are polytetrafluoroethylene. 10. The fluid sterilizing device according to claim 3, wherein the base further has a partition, and the partition is located between the first reaction chamber and the second reaction chamber. 11. The fluid sterilizing device according to claim 10, wherein the partition has a first light guiding portion and a second light guiding portion, the first light guiding portion is used to guide at least part of the sterilizing light to The first reaction chamber, and the second light guide part is used to guide at least part of the sterilizing light to the second reaction chamber. 12 . The fluid sterilizing device according to claim 10 , wherein the base further has a groove, and the groove extends from the bottom surface of the communication cavity to the partition part in the direction of irradiation of the sterilizing light. 13 . 13. The fluid sterilizing device according to claim 12, characterized in that the depth of the groove is greater than 2 cm. 14. The fluid sterilizing device according to claim 13, characterized in that the depth of the groove is 5 cm to 8 cm. 15. The fluid sterilizing device according to claim 12, wherein the width of the groove is smaller than the diameters of the first reaction chamber and the second reaction chamber. 16. The fluid sterilizing device according to claim 1, wherein the light source comprises a first light-emitting element and a second light-emitting element, the first light-emitting element emits the at least part of the sterilizing light incident on the first The reaction chamber, the second light-emitting element, emits at least another part of the sterilizing light, which is incident on the second reaction chamber. 17. The fluid sterilizing device according to claim 16, wherein the length of the first reaction chamber is more than 15 times the side length of the light emitting area of the first light emitting element. 18. The fluid sterilizing device according to claim 1, wherein the light source emits light in the form of a pulse signal. 19. The fluid sterilizing device according to claim 1, further comprising a light intensity sensor disposed on the circuit board to sense the intensity of the sterilizing light emitted by the light source.