Barreled water dispenser with system for treating water in barrel through ultraviolet radiation

Abstract

The utility model provides a barreled water dispenser (1) with a system for treating water in a barrel with ultraviolet radiation. The barreled water dispenser (1) comprises a water inlet finger (5). The water inlet finger (5) is provided with an ultraviolet (UV) radiation source (25) and is used for opening the water bucket (4) sealed by the bucket cover (6) by pushing a cover valve (7) mounted at the center of the bucket cover (6) into the water bucket (4) or breaking the cover valve (7). The semiconductor LED is used as a UV radiation source (25). The semiconductor LED is mounted in a groove (24) located at the end face of the water inlet finger (5), so that when the water bucket (4) is opened by the water inlet finger (5), the UV radiation source (25) is located in the water bucket (4), and the radiation of the UV radiation source (25) faces the water surface and the bucket wall. The semiconductor LED is protected by a quartz glass (29) covering the recess (24).

Description

Technical Field

[0001] The invention relates to a bottled water drinking machine, in particular to a bottled water drinking machine with a system for treating water in the barrel by ultraviolet radiation. Background Art

[0002] It is known that in order to protect the water in a bucket installed in a water dispenser from biological contamination, an ultraviolet (UV) radiation source can be installed to allow ultraviolet radiation to enter the bucket.

[0003] US2016083271A1 discloses a device for treating water in a container (such as a bucket), the device comprising a housing and a UV radiation source placed in the housing. The housing is detachably connected to a hole on the container so as to contact the water in the container. A light-emitting element is provided on the housing to emit ultraviolet light to irradiate the water in the container. However, this device is used for batch disinfection of water and must be removed from the container before pouring the water.

[0004] JP2017210256A discloses a bottled water dispenser and proposes using an ultraviolet LED at the water inlet finger end to treat the water in the barrel with ultraviolet light. This solution creates difficulties when installing an inverted barrel on the dispenser. First, the barrel must be opened before installation, which may cause water to overflow during installation and microorganisms to enter the opened barrel. Secondly, since it is quite difficult to accurately position the heavy barrel during installation, and the person's line of sight will be blocked by the barrel neck, there is a risk that the LED will be damaged by the barrel neck.

[0005] JP3174477U discloses another bottled water dispenser, which proposes to set ultraviolet LEDs on the outer surface of the water inlet finger of the dispenser to treat the water in the barrel with ultraviolet light. However, this solution is designed for soft barrels (foldable barrels) and is not effective for hard barrels, because the radiation of the LEDs on the side surfaces of the water inlet fingers is mainly horizontal, and its radiation is not enough to effectively treat the water and air in the upper part of the bucket. In addition, in this design, in order to effectively treat the water in the barrel, multiple LEDs need to be installed around the water inlet finger.

[0006] The closest technical solution to the present invention is a water dispenser described in WO2016157124A1. In this water dispenser, a UV lamp is placed in a water inlet finger made of a material transparent to UV radiation, which is used to UV-treat the water in the bucket. When the bucket is installed in the water dispenser, the water inlet finger opens the bucket cover and enters the bucket. However, this solution also has some disadvantages.

[0007] Since UV radiation enters the bucket through the side walls of the inlet finger and is mainly horizontal, the length of the inlet finger must be increased to effectively treat the water in the bucket. This will reduce the strength of the inlet finger and make it difficult to install the bucket into the water dispenser. Even so, it may not be able to effectively treat the water and air in the upper part of the bucket.

[0008] At the same time, the UV radiation transmittance of existing plastic materials is very low, which requires increasing the power of the UV radiation source. If quartz glass with higher transmittance is used, the price of the water inlet finger will be higher. Most importantly, the water inlet finger will also be more easily damaged, so once damaged, it will be dangerous to use.

[0009] In addition, the use of UV lamps in the water inlet fingers increases the danger because both the water inlet fingers and the UV lamps may be damaged when heavier buckets are installed, and the mercury vapor contained in the UV lamps is very harmful to health. If not discovered in time, it will enter the water, causing serious harm to human health.

[0010] Furthermore, since the UV lamps occupy most of the internal space of the inlet finger, placing the lamps in the inlet finger will significantly reduce the flux of the inlet finger.

[0011] For this type of water dispenser with a light tube installed in the water inlet finger, a special lid is required, which requires less force to open than a standard lid. Therefore, this type of water dispenser is not suitable for use with SaveGuard TM Commonly used PET barrels with other types of barrel covers.

[0012] This bucket usually has a capacity of 3 or 5 gallons (11 or 19 liters), is made of hard plastic and, unlike the so-called collapsible buckets, retains its shape when the water is poured out. The outer diameter of the neck of this bucket is about 6 cm and it is usually closed by a lid. The middle of the lid is provided with an inner hole of about 18 mm in diameter, which is closed by a cover valve or burst valve pushed into the bucket. When installing this bucket in a water dispenser, the bucket is mounted on an inlet finger, which opens the bucket by pushing the cover valve into the bucket or by bursting it, depending on the type of lid.

[0013] When opening such a bucket, the inlet finger presses its end against the cover valve or partition with a force of 10 to 30 kg (100-300 N). Considering that the outer diameter of the inlet finger corresponds to the inner hole of the bucket cover (about 18 mm), the inlet finger of such a bucket is usually made of durable plastic such as ABS. Summary of the invention

[0014] The purpose of the present invention is to improve the reliability of a water dispenser by ensuring effective treatment of the water in the water bucket using a UV radiation source in a water bucket mounted on the dispenser and ensuring that the water bucket automatically opens when installed. Automatic opening of the water bucket when installed on the dispenser prevents external microbial contaminants from entering the water in the water bucket during installation.

[0015] In order to achieve the above-mentioned objectives, the present invention provides a bottled water drinking machine with a system for treating water in a bucket with ultraviolet radiation, the drinking machine comprising a water inlet finger with a UV radiation source, the water inlet finger being used to open a bucket sealed by a bucket cover by pushing a cover valve installed in the center of the bucket cover into the bucket or breaking the cover valve, wherein a semiconductor LED is used as the UV radiation source, the semiconductor LED being installed in a groove located on the end surface of the water inlet finger, so that when the bucket is opened with the water inlet finger, the UV radiation source is located in the bucket, and the radiation of the ultraviolet radiation source is directed toward the water surface and the bucket wall; the semiconductor LED is protected by quartz glass covering the groove.

[0016] Optionally, the water dispenser further comprises a frame structure fixed on the end face of the water inlet finger. If the bucket cover is made of a plastic with a higher density, this frame structure will make it easier to open the bucket cover with a rupture valve.

[0017] Optionally, the frame structure is composed of rods to form a pyramid shape; the top of the frame structure is located on the axis of the water inlet finger and is higher than the end surface of the water inlet finger. At the same time, the number of rods forming the pyramid is at least three. The strength of the frame structure is sufficient to cause the cover valve to rupture, but will not seriously block the UV radiation source.

[0018] Optionally, the upper part of the water inlet finger is made of metal. The upper part of the water inlet finger is made of metal, which can not only increase its strength, but also improve the heat dissipation effect of the UV radiation source.

[0019] Optionally, the quartz glass is installed in the groove and is lower than the upper surface of the water inlet finger. In this way, the quartz glass can be better protected and prevented from being damaged or accidentally scratched.

[0020] Optionally, the water dispenser further comprises a water inlet pipe; a channel is provided in the water inlet pipe so that the end of the water inlet pipe can pass through the channel into the water bucket, and the length of the water inlet pipe is sufficient to allow the end of the water inlet pipe to reach the bottom of the water bucket. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 An external schematic diagram of a bottled water dispenser provided for one embodiment of the present invention.

[0022] Figure 2 The present invention provides an internal schematic diagram of a bottled water dispenser according to an embodiment of the present invention.

[0023] Figure 3A cross-sectional view of a water inlet finger of a bottled water dispenser provided in an embodiment of the present invention.

[0024] Figure 4 A graph showing the evolution of the microbial contamination level of water in a barrel without the use of UV radiation.

[0025] Figure 5 The graph shows the evolution of the microbial contamination level of the water in the bucket with UV radiation switched on periodically.

[0026] Figure 6 A schematic diagram of a water inlet finger of a bottled water dispenser provided in an embodiment of the present invention.

[0027] Figure 7 A cross-sectional view of a water inlet finger of a bottled water dispenser provided in an embodiment of the present invention.

[0028] Figure 8 A schematic diagram of a bottled water dispenser provided according to another embodiment of the present invention.

[0029] Fig. 9 A schematic diagram of a bottled water dispenser provided according to another embodiment of the present invention.

[0030] Fig.10 A schematic diagram of a bottled water dispenser provided according to another embodiment of the present invention.

[0031] Fig.11 A cross-sectional view of a water inlet finger of a bottled water dispenser provided in an embodiment of the present invention.

[0032] Fig.12 Schematic diagram of two types of barrel covers.

[0033] Fig.13 A schematic diagram of a bottled water dispenser provided according to another embodiment of the present invention.

[0034] In the figure, 1, water dispenser; 2, shell; 3, smart seat; 4, water bucket; 5, water inlet finger (Example 1); 6, bucket cover; 7, cover valve; 8, water storage tank; 9, cooling device; 10, cold water outlet (from water storage tank); 11, normal temperature water outlet (from water storage tank); 12, solenoid valve; 13, public water outlet; 14, hot water tank; 15, heating device; 16, UV radiation source in water storage tank; 17, air channel (of water inlet finger); 18, water channel (of water inlet finger) ; 19. Water hole (of water inlet); 20. Air hole (of water inlet); 21. Water outlet (of water inlet); 22. Air inlet (of water inlet); 24. Groove (of water inlet); 25. UV radiation source (semiconductor LED); 26. Circuit board; 27. Electric wire; 28. Wire trough; 29. ​​Quartz glass; 31. Frame structure; 32. Rod; 34. Upper part of water inlet made of metal; 35. Control device; 36. Power supply; 38. Shell; 39. Smart seat; 41. outlet valve; 42. pipeline; 43. UV radiation source; 44. air passage; 46. fastening device; 48. outlet valve; 49. base; 50. UV radiation source; 51. cable; 56. housing; 57. water storage tank; 58. water pump; 59. pipeline; 60. cooling device; 61. cold water outlet; 62. normal temperature water outlet; 63. solenoid valve; 64. solenoid valve; 65. common water outlet; 66. hot water tank; 67. heating device; 68. solenoid valve; 7 1. Water inlet pipe; 72. Water inlet refers to the internal channel; 73. Flexible pipe; 74. Flange; 75. UV radiation source; 76. Groove; 78. Plate; 79. Quartz glass; 80. Electric wire; 81. Wire duct; 82. Control device; 83. Power supply; 84. UV radiation source in the water tank; 86. Water tank; 87. Outlet valve; 88. Smart seat; 90. Air channel; 91. Water channel; 92. UV radiation source; 93. UV radiation source; 94. Air filter. DETAILED DESCRIPTION

[0035] Embodiment 1

[0036] Figure 1 The figure is an external schematic diagram of a bottled water dispenser. Figure 2 The figure is a schematic diagram of the interior of a bottled water dispenser. The dispenser is designed to be suitable for 3 or 5 gallon (11 or 19 liter) drinking water barrels. The dispenser 1 includes a housing 2, and a smart seat 3 for mounting an inverted water bucket 4 is provided on the upper portion of the housing 2. A water inlet finger 5 is provided at the center of the smart seat 3. When the water bucket 4 is installed in the dispenser 1, the water inlet finger 5 opens the water bucket 4 by breaking the barrel cover 6 or pushing the barrel cover 6 into the water bucket 4. When a new water bucket 4 is installed in the dispenser 1, the water bucket 4 is turned over to be mounted in the smart seat 3 with the barrel neck facing downward. At the same time, when the water bucket 4 is installed, the barrel cover 6 of the water bucket 4 abuts against the water inlet finger 5, so that the cover valve located in the center of the barrel cover 6 breaks or pushes the cover valve into the water bucket 4.

[0037] The water inlet finger 5 is connected to an internal water storage tank 8 provided with a cooling device 9. The water storage tank 8 has a cold water outlet 10 and a normal temperature water outlet 11. The cold water outlet 10 and the normal temperature water outlet 11 are connected to a common water outlet 13 of the water dispenser 1 through a solenoid valve 12 for water outlet. The normal temperature water outlet 11 is also connected to a hot water tank 14 provided with a heating device 15. The hot water tank 14 is connected to the common water outlet 13 of the water dispenser 1 through a solenoid valve 12.

[0038] In order to maintain the purity of the water in the water dispenser 1, a plurality of UV radiation sources 16 are also installed in the water tank 8 to maintain the microbial purity of the water in the water tank 8. A semiconductor LED in the deep ultraviolet (UV-C) range is used as the UV radiation source 16 in the water tank 8. Regularly turning on the UV radiation source 16 helps to maintain the microbial purity of the water in the water tank 8. Since there are always a certain amount of microorganisms in the water tank 8, these microorganisms come from the surrounding air and may also come from the water in the bucket. Therefore, if the water in the water tank 8 is not treated with UV radiation regularly, the number of microorganisms may exceed the allowable value for drinking water.

[0039] A control device 35 and a power supply 36 are also installed in the housing 2 to ensure the operation of the water dispenser 1 .

[0040] Figure 3 : is a cross-sectional view of the water inlet finger 5. The water inlet finger 5 is located in the middle of the smart seat 3. The water inlet finger 5 has two internal channels, one is the air channel 17, through which the air from the water dispenser 1 enters the water bucket 4; the other is the water channel 18, through which the water from the water bucket 4 enters the water dispenser 1. The upper part of the water inlet finger 5 is provided with two holes, one is the water hole 19, and the other is the air hole 20. The lower part of the water inlet finger 5 is provided with a water outlet 21 of the water channel 18 and an air inlet 22 of the air channel 17.

[0041] The end face of the water inlet finger 5 is provided with a UV radiation source 25. The UV radiation source 25 is installed in a groove 24 on the end face of the water inlet finger 5. The UV radiation source 25 is a UV-C radiating semiconductor LED mounted on a circuit board 26. The power supply of the UV radiation source 25 is provided by a wire 27, which passes through a wire groove 28 inside the water inlet finger 5. The groove 24 in which the UV radiation source 25 is placed is closed from above by a quartz glass 29. The UV radiation source 25 uses UV radiation to treat the water and air in the barrel. Since the maximum increase in the number of microbial contamination occurs at the boundary between the barrel wall and the water-air space in the barrel, the radiation direction of the UV radiation source 25 is upward, toward the water and air in the barrel.

[0042] It is well known that microbial contamination of drinking water barrels tends to increase after they are opened. It has been shown that in initially microbiologically pure water, the level of microbial contamination in the barrels may exceed 1000 CFU / mL (colony forming units per milliliter) 14 days after the barrels were opened. The sanitary standard for drinking water stipulates that it should not exceed 1000 CFU / mL.

[0043] For example, Figure 4 The results of measuring microbial contamination in barrels after opening without using UV radiation to inhibit the development of microbial contamination are shown. The X-axis represents the number of days after opening, and the Y-axis represents the microbial contamination level (in CFU / mL). It can be seen that after one week of opening, the microbial contamination level may have exceeded the allowed hygiene standards.

[0044] As we all know, UV rays are electromagnetic radiation with a wavelength slightly lower than the visible spectrum (400-780nm). UV rays are divided into three categories: UV-A with a wavelength of 315-400nm, UV-B with a wavelength of 280-315nm, and UV-C with a wavelength of 200-280nm. In addition to the visible spectrum, the sun also emits UV rays. However, unlike UV-A and UV-B rays, the UV-C part is almost completely absorbed by the Earth's atmosphere. This is why microorganisms cannot develop appropriate UV-C resistance mechanisms. Therefore, the part of UV radiation that is most effective in killing these microorganisms is UV-C, which has an inactivation peak at 254nm. The damage caused by UV-C radiation to microorganisms occurs directly at the DNA level. UV-C irradiation of DNA molecules causes the formation of holes in the thymine bases. As a result, the enzymes responsible for unwinding and copying DNA during the replication process can no longer function. In this way, microorganisms cannot reproduce and cause infection. Therefore, UV-C radiation has a bacteriostatic effect, rather than a predominantly bactericidal effect. If the dose of UV irradiation is large enough, all waterborne enteric pathogens can be inactivated by UV rays. Different microorganisms have different sensitivities to UV-C radiation.

[0045] The experiment found that in order to steadily reduce the microbial contamination of water in a 19-liter barrel, the water only needs to be treated regularly and the power of the UV radiation source can be relatively low.

[0046] Figure 5 The figure shows the change of water microbial contamination when the UV radiation source is turned on once an hour for ten minutes each time, the light power of the UV radiation source is 30mW, and the average radiation frequency is 270nm. Therefore, the radiation of the UV radiation source placed in the bucket is relatively weak, which can greatly reduce the possibility of water in the water dispenser being contaminated by microorganisms and reduce the risk of users receiving contaminated water.

[0047] The working principle of the water dispenser is as follows. When a new bucket 4 filled with water is installed, the bucket 4 is turned upside down and placed in the smart seat 3 so that the neck of the bucket 4 is located on the water inlet finger 5. In this case, the water inlet finger 5 first abuts against the cover valve 7 of the bucket cover 6. Then, when the bucket 4 is further lowered, the water inlet finger 5 opens the bucket 4 by breaking the cover valve 7 or pushing the cover valve 7 into the bucket 4. After the water inlet finger 5 enters the bucket 4, the water in the bucket 4 begins to flow into the water dispenser 1 through the water channel 18 of the water inlet finger 5, and the air in the water dispenser 1 enters the bucket 4 through the air channel 17 of the water inlet finger 5, replacing the water flowing out of the bucket 4.

[0048] In order to place the UV radiation source 25 in the water tub 4, the UV radiation source 25 is installed on the upper end surface of the water inlet finger 5. In this way, when the water tub 4 is opened by the water inlet finger 5, the UV radiation source 25 is located in the water tub 4. In order not to damage the UV radiation source 25 when the water tub 4 is opened, the UV radiation source 25 is installed in the groove 24 and covered with a quartz glass 29.

[0049] When the water storage tank 8 is filled with water, the water blocks the air inlet 22 of the air passage 17, and since air no longer enters the water bucket 4, the water flow from the water bucket 4 also stops. When water is received from the water dispenser 1, the water level in the water storage tank 8 drops, thereby opening the air passage 17 to the water bucket 4, and water starts to flow from the water bucket 4 into the water dispenser 1 until the rising water level cuts off the air supply to the water bucket 4 again.

[0050] During the operation of the water dispenser, the control device 35 turns on the UV radiation source 25 installed in the water inlet finger 5 at a predetermined frequency to prevent the water in the barrel from being contaminated by microorganisms. The control device 35 also controls the operation of the additional UV radiation source 16 installed in the water storage tank 8 to prevent microbial contamination in the water storage tank.

[0051] The presence of the additional UV radiation source 16 in the water storage tank 8 improves the microbiological status of the water dispenser. However, the additional UV radiation source 16 in the water dispenser cannot replace the UV radiation source 25 in the water bucket. Firstly, because the more polluted the water entering the water dispenser is, the stronger the UV radiation is needed to treat the water in the water dispenser. Therefore, when the water in the bucket is more polluted, for example, when the water dispenser is out of operation for a long time, which may be up to a month or even longer, the installed capacity of the UV radiation source inside the water dispenser may not be sufficient to reliably treat the water. Secondly, when supplying water to the user, the water in the water dispenser will be replaced by the water in the bucket. At the same time, since the water in the bucket is mixed with the water in the water dispenser, some of the microbiologically contaminated water from the bucket will bypass the UV radiation treatment in the water storage tank 8 and reach the user immediately. In particular, when the user receives the normal temperature water, since the normal temperature water is taken from the upper layer of the water storage tank 8, the water in the bucket will also enter the upper layer of the water storage tank 8.

[0052] like Figure 3As shown, this water inlet finger 5 can open the bucket lid with a cover valve or a rupture valve that can be pushed into the bucket. When the bucket lid 6 with the cover valve 7 is opened, as shown in FIG. Fig.12 As shown in FIG. 1 , the edge of the water inlet finger 5 abuts against the edge of the cover valve 7 to push it into the water bucket 4. When the bottle cap with the rupture valve is opened, as shown in FIG. Fig.12 As shown in b, the upper part of the water inlet finger 5 abuts against the rupture valve and ruptures it.

[0053] Figure 6 Another embodiment of the water inlet finger is shown. Figure 3 Compared with the water inlet finger 5 shown in the figure, the water inlet finger 5 also includes a frame structure 31 fixed on the end face of the water inlet finger 5. The frame structure 31 is composed of four rods 32, forming a pyramid shape, and its top is located on the axis of the water inlet finger 5 and higher than the end face of the water inlet finger 5. The frame structure 31 makes it easier to open the bucket 4 with the bucket cover 6 with a rupture valve. When opening, the tip of the frame structure 31 is against the center of the cover valve. Since the force acts on the tip, and the area of ​​the tip is obviously smaller than the area of ​​the end face of the water inlet finger 5, the tip can easily rupture the cover valve.

[0054] In order to enable the water inlet finger 5 to open the bucket lid 6 with the cover valve 7 to be pushed, the height of the frame structure 31 is smaller than the depth of the cover valve 7. Therefore, when opening the bucket lid, the water inlet finger 5 abuts against the cover valve 7 with the edge of the end face and pushes it into the bucket. In this case, the top of the pyramid or the tip of the frame structure will not reach the bottom of the cover valve 7 and will not participate in the opening of the bucket. Since the frame structure 31 is made of relatively thin rods with gaps between them, it will not interfere with the UV radiation from the UV radiation source 25 below.

[0055] Figure 7 Another embodiment of the water inlet finger is shown. Figure 2 and Figure 3 The main difference of the embodiment shown is that the main part of the water inlet finger 5 is made of plastic like the previous embodiments, but the upper part 34 is made of metal, such as stainless steel. The upper part 34 of the water inlet finger 5 is made of metal, which, on the one hand, increases the strength of the part of the water inlet finger that bears the main load when the bucket is opened, and on the other hand, improves the heat dissipation effect of the UV radiation source.

[0056] Embodiment 2

[0057] Figure 8A tabletop embodiment of the water dispenser is shown. The water dispenser 1 includes a housing 38. A smart seat 39 is provided on the upper portion of the housing 38 for mounting an inverted water bucket 4. There is a water inlet finger 5 at the center of the smart seat 39, and when the water bucket 4 is mounted in the water dispenser 1, the water bucket 4 is opened by pushing a cover valve into the water bucket 4. Unlike the water dispenser 1, the water dispenser 1 is designed to supply only room temperature water and has no water storage tank inside. The water inlet finger 5 is connected to the outlet valve 41 through a pipe 42. Air enters the water bucket 4 through an air channel 44 of the water inlet finger 5, which is connected to an air filter and is equipped with a check valve.

[0058] A UV radiation source 43 is mounted at the end of the water inlet finger 5, which is connected to a control device (not shown) and a power source (not shown) mounted in the housing 38. The control device is used to periodically turn on the UV radiation source 43 to maintain the microbiological purity of the water in the water bucket 4. In this design, the presence of the UV radiation source in the water bucket is particularly useful because the water in the bucket can be immediately taken by the user without additional UV treatment in the water dispenser. In addition, the design of the water inlet finger 5 with the UV radiation source 43 is similar to that of the conventional water dispenser. Figure 3 The water inlet finger 5 of the water dispenser in the illustrated embodiment 1 is the same as that in the illustrated embodiment 1.

[0059] Embodiment 3

[0060] Fig. 9 Another embodiment of a water dispenser is shown. In this embodiment, the water dispenser 1 comprises a fastening device 46 fixed to the neck of a water bucket 4, a water inlet finger 5 and an outlet valve 48 connected to the water inlet finger 5. The fastening device 46, the water inlet finger 5 and the outlet valve 48 are connected together. The water dispenser 1 is fixed directly to the neck of the water bucket 4. The neck of the water bucket 4 is mounted on a base 49 at an angle of about 45° to the vertical with the neck facing downward. In this embodiment, the water dispenser 1 is first placed on the neck of the water bucket 4 with the neck of the water bucket 4 facing upward, while the water inlet finger 5 opens the water bucket 4 and pushes or punches the valve of the bucket cover 6. After the water dispenser 1 is mounted on the neck of the water bucket 4, the water bucket 4 is turned over and placed on the base 49. The base 49 also includes a control device (not shown) and a power supply (not shown) to ensure the operation of the UV radiation source 50 mounted on the end face of the water inlet finger 5. After the water bucket 4 is mounted on the base 49, the water dispenser 1 is connected to the base 49 via a cable 51. Apart from this, the design and operation of the water dispenser 1 are similar to those of the embodiment of the present invention. Figure 8 The water dispenser shown is similar.

[0061] Embodiment 4

[0062] Fig.10 Another possible embodiment of a water dispenser is shown. Fig.10 The water dispenser 1 shown is Figure 2The main difference of the water dispenser 1 shown is that the water bucket 4 is located at the lower part of the housing 56 with the neck facing upward. In this configuration, the water in the water bucket 4 is supplied to the water storage tank 57 by a water pump 58, which is connected to the water storage tank 57 through a pipe 59. Apart from this, the design of the water dispenser 1 is similar to that of the water dispenser 1. Figure 2 The design of the water dispenser 1 is similar. The internal water storage tank 57 with the cooling device 60 has a cold water outlet 61 and a normal temperature water outlet 62. The cold water outlet 61 and the normal temperature water outlet 62 are connected to a common water outlet 65 for water outlet through solenoid valves 63 and 64. The normal temperature water outlet 62 is also connected to a hot water tank 66 provided with a heating device 67. The hot water tank 66 is connected to the common water outlet 65 of the water dispenser 1 through a solenoid valve 68.

[0063] The housing 56 further comprises a control device 82 and a power supply 83 to ensure the operation of the water dispenser 1 .

[0064] The design of the water inlet finger 5 is as follows Fig.11 As shown. When the neck of the water bucket 4 is placed upward, the water inlet finger 5 is higher than the water level in the water bucket 4, the water dispenser 1 is additionally equipped with a water inlet pipe 71. After the water bucket 4 is opened by the water inlet finger 5, the water inlet pipe 71 passes through the channel 72 in the water inlet finger 5 and enters the water bucket 4. The length of the water inlet pipe 71 is sufficient to reach the bottom of the water bucket 4. The water inlet pipe 71 is connected to the water pump 58 through a flexible pipe 73.

[0065] In order to prevent microbial contamination in the barrel after the lid is opened, a UV radiation source 75 is installed on the end surface of the water inlet finger 5. The UV radiation source 75 is installed in a groove 76 on the end surface of the water inlet finger 5. The UV radiation source 75 is a semiconductor LED installed on a circuit board 78. The groove 76 where the UV radiation source 75 is placed is covered with quartz glass 79. The power supply of the UV radiation source 75 is provided by a wire 80, and the wire 80 passes through a wire groove 81 inside the water inlet finger 5.

[0066] In order to maintain the purity of the water in the water dispenser, a plurality of UV radiation sources 84 are also installed in the water storage tank 57. The UV radiation sources 84 in the water storage tank 57 are used to maintain the microbial purity of the water in the water storage tank 57.

[0067] When a new water bucket 4 is installed in the water dispenser 1, the water bucket 4 is first opened with the water inlet finger 5 by pushing the water inlet finger 5 into the bucket cover 6, and then the water inlet finger 5 is fixed to the neck of the water bucket 4 with the flange 74 or the like. Afterwards, the water inlet pipe 71 is passed through the channel 72 of the water inlet finger 5, and the water inlet pipe 71 is connected to the water pump 58 through the flexible pipe 73.

[0068] Embodiment 5

[0069] Fig.13Another possible embodiment of the water dispenser is shown. In this embodiment, the water dispenser 1 is composed of a water storage tank 86 provided with an outlet valve 87, a smart seat 88 installed on the upper part of the water storage tank 86, and a water inlet finger 5 installed in the funnel center of the smart seat 88.

[0070] The water inlet finger 5 has two internal passages, one is an air passage 90, through which the air from the water dispenser 1 enters the water tub 4; the other is a water passage 91, through which the water from the water tub 4 enters the water dispenser 1. In order to clean the external air entering the water dispenser 1, the water dispenser 1 is also equipped with an air filter 94.

[0071] The UV radiation source 92 is mounted in a groove on the end face of the water inlet finger 5. The UV radiation source 92 is a semiconductor LED. The groove accommodating the UV radiation source 92 is covered from above with quartz glass. The UV radiation source 92 is connected to an external control device and a power supply. The control device ensures that the UV radiation source 92 is regularly turned on to maintain the microbiological purity of the water in the water bucket 4.

[0072] In order to maintain the microbiological purity of the water in the water storage tank 86, a plurality of additional UV radiation sources 93 are installed in the water storage tank 86. The additional UV radiation sources 93 are also connected to the control device and the power supply.

[0073] Thus, the present invention enables a UV radiation source to be placed in a bottled water dispenser, thereby effectively treating the water and air space in the bottle, while retaining the function of automatically opening the water bucket using the water inlet finger when the water bucket is installed in the dispenser.

Claims

1. A bottled water dispenser (1) with a system for treating water in the bottle with ultraviolet radiation, characterized in that: The water dispenser (1) comprises a water inlet finger (5), the water inlet finger (5) having a UV radiation source (25), and being used to open a water bucket (4) sealed by the bucket cover (6) by pushing a cover valve (7) installed at the center of the bucket cover (6) into the water bucket (4) or breaking the cover valve (7); wherein a semiconductor LED is used as the UV radiation source (25), and the semiconductor LED is installed in a groove (24) provided on the end surface of the water inlet finger (5), so that when the water bucket (4) is opened by the water inlet finger (5), the UV radiation source (25) is located in the water bucket (4), and the radiation of the UV radiation source (25) is directed toward the water surface and the bucket wall; the semiconductor LED is protected by a quartz glass (29) covering the groove (24).

2. The bottled water dispenser (1) according to claim 1, characterized in that: The water dispenser (1) further comprises a frame structure (31) fixed on the end surface of the water inlet finger (5).

3. The bottled water dispenser (1) according to claim 2, characterized in that: The frame structure (31) is composed of rods (32) to form a pyramid shape; the top of the frame structure (31) is located on the axis of the water inlet finger (5) and is higher than the end surface of the water inlet finger (5).

4. The bottled water dispenser (1) according to claim 3, characterized in that: The number of the rods (32) forming the pyramid shape is at least three.

5. The bottled water dispenser (1) according to claim 1, characterized in that: The upper part (34) of the water inlet finger (5) is made of metal.

6. The bottled water dispenser (1) according to claim 1, characterized in that: The quartz glass (29) is installed in the groove (24) and is lower than the upper surface of the water inlet finger (5).

7. The bottled water dispenser (1) according to claim 1, characterized in that: The water dispenser (1) further comprises a water inlet pipe (71); wherein the water inlet finger (5) is provided with a channel (72) so that the end of the water inlet pipe (71) can pass through the channel (72) and enter the water bucket (4); the length of the water inlet pipe (71) is sufficient to enable the end of the water inlet pipe (71) to reach the bottom of the water bucket (4).

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