Water purifying and drinking machine

Abstract

The invention relates to a water purifying and drinking machine which comprises a raw water tank; the purification mechanism at least comprises a reverse osmosis membrane filter element; the water level detection mechanism comprises a first water level detection element and a second water level detection element; the control module is used for receiving second water level information acquired by the second water level detection element, and is used for controlling the water level in the accommodating cavity if the second water level information represents that the water level in the accommodating cavity is in contact with a water level line corresponding to the position of the second water level detection element and the water level in the accommodating cavity is judged to reach a low limit water level in the water production process; controlling the water purifying and drinking machine to send out a water shortage reminding instruction; the cavity forms a first space between the first water level detection element and the second water level detection element, and the volume V1 of the first space is configured to be that the first space cannot be filled with the return water amount of the concentrated water in the process that the water purifying and drinking machine sends out a water shortage reminding instruction. According to the water purifying and drinking machine provided by the invention, the water shortage reminding indication is kept when the raw water tank is in water shortage, so that the water purifying and drinking machine is prevented from jumping between two states of reminding the raw water tank to be in water shortage and cancelling reminding.

Description

Technical Field

[0001] This invention relates to the field of water purification equipment technology, and in particular to a water purifier. Background Technology

[0002] There are usually two ways to source raw water for water purifiers. The first way is to connect the water purifier directly to the municipal tap water supply pipe. The second way is to install a water tank (i.e., raw water tank) on the outside or inside of the water purifier to store raw water and supply raw water to the water purifier.

[0003] For the second method, as the raw water tank is used for a longer period, the water quality at the bottom of the tank deteriorates. To prevent the poor water quality from affecting the lifespan of the purification filter, a water level detector is installed in the raw water tank. When the water level reaches a preset value, the detector will remind the user to add raw water to the tank. However, because the RO reverse osmosis membrane filter produces concentrated water during the purification process, this concentrated water flows back into the raw water tank. This backflow causes the water level in the raw water tank to rise again, causing the water purifier to switch between reminding the user that the raw water tank is low and canceling the reminder. This can easily lead users to mistakenly believe that the water purifier is malfunctioning. Summary of the Invention

[0004] Based on the aforementioned deficiencies in the prior art, the purpose of this invention is to provide a water purifier that can ensure a water shortage reminder when the raw water tank is low on water, and avoid the water purifier switching between two states: reminding the raw water tank to be low on water and canceling the reminder.

[0005] Therefore, the present invention provides the following technical solution.

[0006] This invention provides a water purifier, the water purifier comprising:

[0007] Raw water tank, which includes a cavity for storing raw water;

[0008] The purification mechanism has its inlet end connected to the raw water tank, and it includes at least a reverse osmosis membrane filter element. The concentrated water supply port of the reverse osmosis membrane filter element is connected to the raw water tank. When the water purifier starts producing water, the raw water in the chamber flows out and is purified by the purification mechanism. The concentrated water produced by the reverse osmosis membrane filter element flows back to the raw water tank.

[0009] A water level detection mechanism includes a first water level detection element and a second water level detection element that are spaced apart from top to bottom, for acquiring water level information in the cavity;

[0010] The control module is used to receive the second water level information obtained by the second water level detection element, and to control the water purifier to issue a water shortage reminder when the second water level information indicates that the water level in the cavity has touched the water level line corresponding to the location of the second water level detection element and the water level in the cavity has reached the low limit water level during the water purification process.

[0011] The cavity forms a first space between the first water level detection element and the second water level detection element. The volume V1 of the first space is configured such that, during the process of the water purifier issuing a water shortage reminder, the return water volume of the concentrated water cannot fill the first space, so that the water purifier maintains the water shortage reminder.

[0012] Optionally, the water purifier further includes a TDS detection mechanism for obtaining the current TDS value of the water in the cavity.

[0013] Optionally, the control module is further configured to receive the first water level information obtained by the first water level detection element, and during the water production process, if the first water level information indicates that the water level in the cavity has touched the water level line corresponding to the location of the first water level detection element, and it is determined that the current TDS value is ≥ the first preset TDS value, control the water purifier to continue producing water until the first preset water production time is reached, and then control the water purifier to stop producing water and issue a water shortage reminder.

[0014] Optionally, the control module is further configured to receive the first water level information obtained by the first water level detection element, and during the water production process, if the first water level information indicates that the water level in the cavity has touched the water level line corresponding to the location of the first water level detection element, and it is determined that the current TDS value is less than the first preset TDS value, control the water purifier to continue producing water until the second water level information indicates that the water level in the cavity has touched the water level line corresponding to the location of the second water level detection element and the water level in the cavity reaches the low limit water level, and the control module controls the water purifier to issue a water shortage reminder.

[0015] Optionally, the control module is further configured to, during the water production process, if the second water level information indicates that the water level in the cavity has reached the water level line corresponding to the location of the second water level detection element, and it is determined that the water level in the cavity has reached the low limit water level, control the water purifier to stop producing water.

[0016] Optionally, the water level line corresponding to the location of the second water level detection element is configured as the low limit water level.

[0017] Optionally, the lower limit water level is lower than the water level line corresponding to the location of the second water level detection element.

[0018] Optionally, when the second water level information indicates that the water level in the cavity has reached the water level line corresponding to the location of the second water level detection element, the control module is used to determine that the water level in the cavity has not reached the low limit water level in response to the current TDS value being less than the second preset TDS value, and the water purifier continues to produce water; the second preset TDS value is less than the first preset TDS value.

[0019] Optionally, the water purifier further includes a timing module for obtaining the water production time;

[0020] The control module is used to determine the water level in the chamber reaches the low limit water level in response to the water purifier continuing to perform the second preset water production time.

[0021] Optionally, the control module is configured to determine that the water level in the water purifier has reached the low limit water level in response to the water purifier continuing to produce water until the cavity is empty.

[0022] Optionally, the control module is configured to determine that the water level in the container has reached a low limit water level in response to the water purifier continuing to produce water until the current TDS value is greater than a second preset TDS value or greater than a first preset TDS value.

[0023] Optionally, the water purifier further includes a booster pump for providing power for the raw water flowing out of the container to pass through the purification mechanism; the control module is used to determine that the container is empty in response to the booster pump being unloaded.

[0024] Optionally, when the second water level information indicates that the water level in the cavity has reached the water level line corresponding to the location of the second water level detection element, the control module is used to determine that the water level in the cavity has reached the low limit water level in response to the current TDS value being ≥ the second preset TDS value.

[0025] Optionally, when the second water level information indicates that the water level in the cavity has reached the water level line corresponding to the location of the second water level detection element, the control module is used to determine that the water level in the cavity has reached the low limit water level in response to the current TDS value being ≥ the second preset TDS value and the water purifier continuing to perform water production for the third preset water production time.

[0026] Optionally, when the second water level information indicates that the water level in the cavity has reached the water level line corresponding to the location of the second water level detection element, the control module is used to determine that the water level in the cavity has reached the low limit water level in response to the current TDS value being ≥ the second preset TDS value and the water purifier continuing to produce water until the current TDS value is > the first preset TDS value.

[0027] Optionally, when the first water level information indicates that the water level in the cavity has reached the water level line corresponding to the location of the first water level detection element, the control module is used to determine that the water level in the cavity has reached the water level line corresponding to the location of the second water level detection element in response to the water purifier continuing to produce water until a fourth preset water production time is reached and the second water level information indicates that the current water level in the cavity has not reached the water level line corresponding to the location of the second water level detection element.

[0028] Optionally, the water purifier also includes a light assembly;

[0029] When the current TDS value is greater than or equal to the first preset TDS value, the light assembly executes the first lighting mode to indicate that the water purifier is in water production mode; the light assembly executes the second lighting mode to indicate that the water purifier is in a state of water shortage in the raw water tank.

[0030] When the current TDS value is less than the first preset TDS value, the light assembly executes the third lighting mode to indicate that the water purifier is in water production mode; the light assembly executes the fourth lighting mode to indicate that the water purifier is in a state of water shortage in the raw water tank.

[0031] Optionally, the first lighting mode is a constant-on mode for the first light, and the second lighting mode is a flashing mode for the first light.

[0032] Optionally, the third lighting mode is the constant-on mode of the second light, and the fourth lighting mode is the flashing mode of the fourth light.

[0033] Optionally, the first and second lighting modes of the lamp assembly have the same color, the third and fourth lighting modes have the same color, and the first and third lighting modes have different colors.

[0034] Optionally, the water purifier also includes an audible alarm; the audible alarm emits an alarm sound to indicate that the water purifier is in a state of water shortage in the raw water tank.

[0035] Optionally, both the first water level detection element and the second water level detection element are liquid level sensors, and the water level detection mechanism further includes a float located inside the cavity;

[0036] The first water level detection element and the second water level detection element respectively obtain the current water level information by acquiring the position information of the float.

[0037] Optionally, the water purifier further includes a filter holder, and the purification mechanism and the liquid level sensor are respectively installed on the filter holder.

[0038] Optionally, the raw water tank is provided with an installation box, and the float is located inside the installation box, which can float up and down.

[0039] Optionally, the water purifier further includes:

[0040] The housing, which constitutes part of the outer contour structure of the water purifier, is provided with a first water inlet and a second water inlet.

[0041] A water tank for storing clean water treated by the purification mechanism, and which is detachably installed in the housing;

[0042] A kettle, placed below the second water inlet, is used to hold the drinking water supplied by the second water inlet and to heat it a second time;

[0043] The water collection box has a first water inlet and a water collection chamber that are connected to each other, and the first water supply inlet is located above the first water inlet.

[0044] Optionally, the top wall of the housing is provided with an assembly port, through which the purified water tank is inserted into the housing.

[0045] Optionally, the water purifier further includes a water circuit board located below the raw water tank. The housing and the raw water tank are arranged sequentially in the left-right direction, and the kettle and the water collection box are both located in front of the housing.

[0046] Optionally, the water purifier further includes a communicating vessel, wherein the first water inlet of the communicating vessel is connected to the purified water outlet of the purification mechanism, and the water outlet of the communicating vessel is connected to the purified water tank.

[0047] Optionally, the water purifier further includes:

[0048] A heating element, the water inlet of which is connected to the water outlet of the purified water tank;

[0049] The first valve has its inlet end connected to the outlet end of the heating component, and its first outlet end is connected to the first water supply port.

[0050] The first pipeline has its inlet end connected to the second outlet end of the first valve;

[0051] The second valve has its inlet end connected to the outlet end of the first pipeline, and its first outlet end connected to the second water supply port.

[0052] The raw water tank, the water circuit board, the purification mechanism, the communicating vessel, the clean water tank, the heating component, the first valve, and the first water supply port are connected in sequence to form a first water supply circuit.

[0053] The raw water tank, the water circuit board, the purification mechanism, the communicating vessel, the clean water tank, the heating component, the first valve, the first pipeline, the second valve, and the second water supply port are connected in sequence to form a second water supply circuit.

[0054] Optionally, the second outlet of the second valve is connected to the second inlet of the communicating vessel;

[0055] When the water purifier has been in an unused state for a preset standby time, the purified water tank, the heating component, the first valve, the first pipeline, the second valve, the connector, and the purified water tank are sequentially connected to form a circulating water circuit, and the circulating water circuit is operated to perform hot water sterilization treatment.

[0056] Optionally, the exterior of the water purification tank is provided with a drain valve body, which is connected to the water purification tank, the heating component and the communicating vessel respectively, and a diaphragm pump is provided on the connecting pipe between the drain valve body and the heating component;

[0057] When the water purifier supplies water, the water tank and the heating component are connected in sequence through the drain valve body and the diaphragm pump;

[0058] When the water purifier is in an unused state for a preset standby time, the purified water tank, the drain valve body, the diaphragm pump, the heating component, the first valve, the first pipeline, the second valve, the connector, the drain valve body, and the purified water tank are connected in sequence to form a circulating water circuit.

[0059] Optionally, a water vapor separation component is provided between the first outlet end of the first valve and the first water supply port. The water flowing out of the first outlet end of the first valve is separated into water vapor by the water vapor separation component and then flows to the first water supply port.

[0060] Optionally, the exhaust port of the water vapor separation component is connected to the communicating vessel, and the communicating vessel is connected to the atmosphere.

[0061] Optionally, the water purifier further includes a base, and the housing is mounted on top of the base;

[0062] An extension seat is provided on the front side of the base, and the kettle is placed on the extension seat; the water collection box abuts against one side wall of the extension seat, and the two together form the base structure of the water purifier.

[0063] Optionally, the water purifier further includes a base, and the housing is mounted on top of the base;

[0064] The base is provided with a lower coupler, and the kettle is provided with an upper coupler. The upper coupler is electrically connected to the coupler to perform secondary heating on the water in the kettle.

[0065] Optionally, the housing is provided with a display screen for displaying the working status of the kettle.

[0066] Optionally, a power module is provided inside the housing, which supplies power to the kettle.

[0067] Optionally, the water collection box is provided with a placement part and a second water inlet. The placement part is located on the other side of the first water inlet away from the placement position of the kettle. The placement part is used to place a water cup. The second water inlet is connected to the water collection cavity.

[0068] Optionally, the water purifier includes a light assembly located below the raw water tank; the raw water tank has a first light-transmitting window, and the light assembly is used to indicate the water purification status of the water purifier and the water shortage status of the raw water tank.

[0069] Optionally, the original water tank has a light-transmitting structure.

[0070] Optionally, the water purifier includes a water circuit board, and the light assembly is located between the raw water tank and the water circuit board.

[0071] Optionally, the lamp assembly is detachably connected to the water circuit board.

[0072] Optionally, the connection method between the lamp assembly and the water circuit board includes snap-fit, fastening, or adsorption connection.

[0073] Optionally, the lamp assembly includes:

[0074] The housing is detachably connected to the water channel plate and has a second light-transmitting window;

[0075] The light panel is connected to the housing;

[0076] LED beads, which are connected to the lamp panel.

[0077] Optionally, the water purifier includes a raw water tank base, which covers the outer periphery of the water circuit board; the raw water tank is placed on the raw water tank base;

[0078] The raw water tank base is provided with a through hole, and the top of the box body is inserted into the through hole, and the assembly of the two is sealed by a sealing ring.

[0079] Optionally, the upper surface of the box body is provided with a protrusion, which is inserted into the through hole.

[0080] Optionally, the upper surface of the water channel plate is provided with at least two opposing support ribs, and the support ribs are provided with fastening grooves; the box body is provided with at least two opposing fastening parts, and the fastening grooves are fastened to the fastening parts one by one.

[0081] Optionally, the box body has a light-transmitting structure.

[0082] The present invention has the following technical effects:

[0083] This invention provides a water purifier that, by configuring a first water level detection element and a second water level detection element that are spaced apart in the vertical direction and limiting the height difference between the first water level detection element and the second water level detection element, ensures that the first space between the first water level detection element and the second water level detection element is sufficient to accommodate the backflow of concentrated water, so that the water purifier maintains a water shortage reminder indication and avoids the water purifier switching between two states: reminding the raw water tank to be low on water and canceling the reminder. Attached Figure Description

[0084] Figure 1 This is a cross-sectional view of the water purifier of the present invention;

[0085] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0086] Figure 3 This is a structural cross-sectional view of the raw water tank of the present invention. Figure 1 ;

[0087] Figure 4 This is a structural cross-sectional view of the raw water tank of the present invention. Figure 2 ;

[0088] Figure 5 This is an exploded view of the water purifier of the present invention. Figure 1 ;

[0089] Figure 6 This is an exploded view of the water purifier of the present invention. Figure 2 ;

[0090] Figure 7 This is a partial three-dimensional structural diagram of the water purifier of the present invention. Figure 1 ;

[0091] Figure 8 This is a partial three-dimensional structural diagram of the water purifier of the present invention. Figure 2 ;

[0092] Figure 9 This is a partial structural side view of the water purifier of the present invention;

[0093] Figure 10 This is a partial three-dimensional structural diagram of the water purifier of the present invention. Figure 3 ;

[0094] Figure 11 This is a three-dimensional structural diagram of the communicating vessel of the present invention;

[0095] Figure 12 This is a cross-sectional view of the communicating vessel of the present invention;

[0096] Figure 13 This is an exploded view of the assembly structure of the raw water tank, raw water tank base, water circuit board and base of the present invention;

[0097] Figure 14 for Figure 13 Enlarged view at point B in the middle;

[0098] Figure 15 This is a partially enlarged cross-sectional view of the assembly structure of the raw water tank, raw water tank base, water circuit board and lamp assembly of the present invention;

[0099] Figure 16 This is a three-dimensional structural diagram of the water collection box of the present invention;

[0100] Figure 17 This is a three-dimensional structural diagram of the water purifier of the present invention.

[0101] Explanation of reference numerals in the attached figures

[0102] 100. Water purifier;

[0103] 11. Raw water tank; 111. Cavity; 112. Mounting box; 1121. Boss; 113. Support platform; 114. Snap-fit ​​part; 115. Limiting rib;

[0104] 12. Water tank; 121. Handle;

[0105] 13. Water collection box; 131. First water collection inlet; 132. Water collection chamber; 133. Placement part; 134. Second water collection inlet;

[0106] 2. Water level detection mechanism; 21. First water level detection element; 22. Second water level detection element; 23. Float;

[0107] 31. Booster pump; 32. Water circuit board; 321. Support rib; 3211. Fastening groove; 33. Communicator; 331. First interface; 332. Second interface; 333. Return inlet; 334. Air inlet; 335. High-position float; 336. Low-position float; 337. Anti-overflow reed switch; 34. Heating assembly; 35. First valve; 36. Second valve; 37. Drain valve body; 38. Diaphragm pump; 39. Water vapor separator assembly;

[0108] 4. Lamp assembly; 41. Housing; 411. Protrusion; 412. Fastening part; 413. Extension rib; 42. Lamp panel; 43. Lamp chip;

[0109] 51. Filter cartridge holder; 511. First filter cartridge; 512. Second filter cartridge; 513. Third filter cartridge; 514. Raw water inlet; 515. Concentrate outlet; 516. Mounting base;

[0110] 52. Housing; 521. First water inlet; 522. Second water inlet; 523. Assembly port; 524. Display screen; 525. Selector switch;

[0111] 53. Base; 531. Extension seat; 532. Lower coupler;

[0112] 54. Original water tank base; 541. Through hole;

[0113] 55. Fix the housing;

[0114] 61. First pipeline; 621. First raw water pipeline; 622. Second raw water pipeline; 63. Concentrate output pipeline; 64. Second pipeline; 65. Third pipeline; 66. Fourth pipeline; 67. Fifth pipeline; 68. Sixth pipeline; 69. Seventh pipeline;

[0115] 71. Sealing ring; 72. TDS sensor; 731. In-situ detection element. Detailed Implementation

[0116] To make the technical solution and beneficial effects of the present invention more apparent and understandable, a detailed description is provided below by listing specific embodiments. Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application pertains.

[0117] In the description of this invention, unless otherwise expressly defined, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this invention and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. That is, they should not be construed as limiting this invention.

[0118] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating the relative importance of the indicated features or the number of indicated technical features. Therefore, a feature specified as "first" or "second" can explicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two; "several" means at least one; unless otherwise expressly defined.

[0119] In this invention, unless otherwise explicitly defined, the terms "installation," "connection," "linking," "fixing," and "setting," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral molding; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0120] In this invention, unless otherwise explicitly defined, the terms "above," "on top of," "over," "above," "below," "below," "below," or "below" for "first feature above second feature" can refer to the first and second features being in direct contact, or to the first and second features being in indirect contact through an intermediate medium. Furthermore, "above," "over," and "below" for "first feature above second feature" can mean the first feature is directly above or diagonally above the second feature, or simply indicates that the horizontal height of the first feature is higher than the horizontal height of the second feature. Similarly, "below," "below," and "below" for "first feature below second feature" can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0121] In this invention, the terms "front," "rear," "left," "right," "up," and "down" all refer to... Figure 1 and Figure 17 The markings in the text shall prevail.

[0122] The following is based on Figures 1 to 17 The present invention provides a detailed description of the water purifier.

[0123] In this embodiment, such as Figure 1 and Figure 2As shown, the water purifier 100 includes a raw water tank 11, a purification mechanism (not shown), a water level detection mechanism 2, and a control module. The raw water tank 11 includes a cavity 111 for storing raw water. The inlet of the purification mechanism is connected to the raw water tank 11. The purification mechanism includes a pre-filter, a reverse osmosis membrane filter, and a post-filter. The concentrated water supply port of the reverse osmosis membrane filter is connected to the raw water tank 11. When the water purifier 100 starts producing water, the raw water in the cavity 111 flows out and sequentially passes through the pre-filter, the reverse osmosis membrane filter, and the post-filter. After being purified by the purification mechanism, the concentrated water produced by the reverse osmosis membrane filter during the purification process flows back to the raw water tank 11. Of course, in other feasible embodiments, depending on actual needs, the purification mechanism may also include a pre-filter and a reverse osmosis membrane filter, or a reverse osmosis membrane filter and a post-filter, or a composite filter of reverse osmosis membrane filter material and pre-filter material, or a composite filter of reverse osmosis membrane filter material and post-filter material, or a composite filter of pre-filter material, reverse osmosis membrane filter material, and post-filter material, etc. The reverse osmosis membrane filter described above refers to a filter material that includes at least reverse osmosis membrane filter material. It can be a single-material filter material filter material that only includes reverse osmosis membrane filter material, or a composite filter material that includes reverse osmosis membrane filter material and other filter materials. This application does not specifically limit this.

[0124] like Figure 1 and Figure 2 As shown, the water level detection mechanism 2 includes a first water level detection element 21 and a second water level detection element 22 spaced apart from top to bottom. The first water level detection element 21 is used to acquire the first water level information in the cavity 111, and the second water level detection element 22 is used to acquire the second water level information in the cavity 111. The control module is used to receive the second water level information acquired by the second water level detection element 22, and during the water purification process, if the second water level information indicates that the water level in the cavity 111 has touched the water level line corresponding to the location of the second water level detection element 22, and if the control module determines that the water level in the cavity 111 has reached the low limit water level, the control module controls the water purifier 100 to issue a water shortage reminder instruction to prompt the user to replenish the raw water tank 11 in time. That is, the current water level in the cavity 111 must simultaneously meet the two conditions that the water level has touched the water level line corresponding to the location of the second water level detection element 22 and the water level has reached the low limit water level before the control module controls the water purifier 100 to issue a water shortage reminder instruction.

[0125] The cavity 111 forms a first space between the first water level detection element 21 and the second water level detection element 22. The volume V1 of the first space is configured such that, during the process of the water purifier 100 issuing a water shortage reminder, the amount of concentrated water returning to the first space cannot fill it completely. Specifically, during the process of the water purifier 100 issuing a water shortage reminder, the concentrated water produced by the reverse osmosis membrane filter will flow back into the cavity 111, causing the water level in the cavity 111 to rise. This solution limits the size of the first space V1 to ensure that the first space is large enough to accommodate the returned concentrated water. In this way, the returned concentrated water will not cause the water level to rise above the water level line corresponding to the location of the first water level detection element 21, thus ensuring that the water purifier 100 will not stop issuing the water shortage reminder and avoiding the water purifier 100 switching between the states of reminding the raw water tank to be low on water and canceling the reminder.

[0126] By adopting the above technical solution, by configuring the first water level detection element 21 and the second water level detection element 22 that are spaced apart in the vertical direction, and limiting the height difference between the first water level detection element 21 and the second water level detection element 22, it is ensured that the first space between the first water level detection element 21 and the second water level detection element 22 is sufficient to accommodate the backflow of concentrated water, so that the water purifier 100 maintains the water shortage reminder indication and avoids the water purifier 100 switching between the two states of reminding the original water tank to be low on water and canceling the reminder.

[0127] In existing technologies, the raw water tank only has one water level detection element. To ensure the produced water meets drinking water quality requirements, this element cannot be positioned too low, otherwise, the water quality will be poor and consumed. This limitation on the element's placement results in a low water production rate. In this solution, the water production rate of the raw water tank 11 can be guaranteed to reach over 70% by limiting the height of the first water level detection element 21. The water production rate represents the ratio of the amount of water taken from the raw water tank 11 to produce pure water to the initial amount of raw water in the tank. Taking a 5L capacity raw water tank 11 as an example, if the first water level detection element 21 is positioned at the water level corresponding to 1.5L of water in the cavity 111, the water production rate is 70%. If it is positioned at the water level corresponding to 1L of water in the cavity 111, the water production rate is 80%.

[0128] It should be understood that in this article, "water production" refers to the operating state in which water in the raw water tank 11 is extracted and purified by the purification mechanism.

[0129] In one embodiment, the water purifier 100 further includes a TDS detection mechanism for obtaining the current TDS value of the water in the cavity 111, that is, for obtaining the current water quality status.

[0130] In one implementation, such as Figure 8 As shown, the TDS detection mechanism is the TDS sensor 72. (As indicated...) Figure 1 , Figure 7 and Figure 8 As shown, the water purifier 100 includes a booster pump 31, a water circuit board 32, and a filter cartridge holder 51. The booster pump 31 is located in front of the filter cartridge holder 51 and provides power for the raw water flowing out of the chamber 111 to pass through the purification mechanism. The water circuit board 32 is located below the raw water tank 11. The filter cartridge holder 51 includes a first filter cartridge seat 511 for accommodating a pre-filter cartridge, a second filter cartridge seat 512 for accommodating a reverse osmosis membrane filter cartridge, and a third filter cartridge seat 513 for accommodating a post-filter cartridge. The first filter cartridge seat 511, the second filter cartridge seat 512, the third filter cartridge seat 513, and the raw water tank 11 are arranged sequentially in the left-right direction of the water purifier 100. The bottom of the filter cartridge holder 51 is equipped with a raw water inlet 514 and a concentrated water outlet 515. The outlet of the raw water tank 11 is connected to the raw water inlet of the water circuit board 32. The raw water outlet of the water circuit board 32 is connected to the inlet of the booster pump 31 through the first raw water pipeline 621. The outlet of the booster pump 31 is connected to the raw water inlet 514 through the second raw water pipeline 622. The raw water inlet 514 is connected to the pre-filter cartridge. The concentrated water outlet 515 is connected to the concentrated water inlet of the water circuit board 32 through the concentrated water output pipeline 63. The concentrated water outlet of the water circuit board 32 is connected to the inlet of the raw water tank 11. The TDS sensor 72 is installed at the bottom of the filter element holder 51 to detect the water quality at the outlet of the second raw water pipeline 622. Of course, the TDS sensor 72 can also be installed on the raw water tank 11. The raw water tank 11 can be removed to collect water when replenishing raw water. Therefore, the TDS sensor 72 is preferably installed on the filter element holder 51.

[0131] In one embodiment, the control module is further configured to receive the first water level information obtained by the first water level detection element 21, and during the water production process, if the first water level information indicates that the water level in the cavity 111 has reached the water level line corresponding to the location of the first water level detection element 21, and it is determined that the current TDS value is ≥ the first preset TDS value, control the water purifier 100 to continue producing water until the first preset water production time is reached, and then control the water purifier 100 to stop producing water and issue a water shortage reminder. Specifically, as shown in the figure... Figure 2As shown, the water level line corresponding to the location of the first water level detection element 21 is the first critical point. When the water level reaches the location of the first water level detection element 21, if the current TDS is greater than or equal to the first preset TDS value, it indicates that the water quality is poor. The water purifier 100 cannot continue to produce water until the water level drops to the location of the second water level detection element 22. In order to avoid the situation of switching between the two states of reminding the original water tank to be low on water and canceling the reminder, the control module controls the water purifier 100 to continue producing water until the first preset water production time is reached, and then stops producing water and issues a water shortage reminder. During the water production period of the first preset water production time, the backflow of concentrated water will not cause the water level in the cavity 111 to rise above the water level line corresponding to the location of the first water level detection element 21, so as to ensure that the water purifier 100 maintains the water shortage reminder. In this way, the drinking water health can be ensured while avoiding the user's mistaken belief that the water purifier 100 has malfunctioned due to the switching of the water shortage reminder.

[0132] In one embodiment, the first preset TDS value is 110, 120, or 150.

[0133] In one embodiment, the control module is further configured to receive the first water level information acquired by the first water level detection element 21, and to perform actions such as... during the water production process. Figure 2 As shown, if the water level in the first water level information indicates that the water level in the cavity 111 has reached the water level line corresponding to the location of the first water level detection element 21, and it is determined that the current TDS value is less than the first preset TDS value, the water purifier 100 is controlled to continue producing water until the water level in the second water level information indicates that the water level in the cavity 111 has reached the water level line corresponding to the location of the second water level detection element 22 and the water level in the cavity 111 reaches the low limit water level. The control module then controls the water purifier 100 to issue a water shortage reminder. Specifically, when the water level reaches the first water level detection element 21, if the current TDS < the first preset TDS value, it indicates that the water quality is good at this time, and the water purifier 100 can continue to produce water until the water level drops to the second water level detection element 22. Furthermore, when the water level in the container 111 has touched the water level line corresponding to the location of the second water level detection element 22 and the water level in the container 111 has reached the low limit water level, it indicates that the water quality is poor and will consume the life of the purification mechanism too quickly. Therefore, the control module controls the water purifier 100 to issue a water shortage reminder.

[0134] Furthermore, the control module is also used in the water production process, such as... Figure 2 As shown, if the second water level information indicates that the water level in the cavity 111 has reached the water level line corresponding to the location of the second water level detection element 22, and it is determined that the water level in the cavity 111 has reached the low limit water level, it indicates that the water quality is poor and will consume the life of the purification mechanism too quickly. That is, while controlling the water purifier 100 to issue a water shortage reminder, the control module also controls the water purifier 100 to stop producing water.

[0135] In one embodiment, the water level line corresponding to the location of the second water level detection element 22 is configured as the low limit water level, the water level line corresponding to the location of the second water level detection element 22 is the second critical point, and the low limit water level is the third critical point. The second critical point and the third critical point are at the same location. Specifically, when the current water level in the cavity 111 reaches the water level line corresponding to the location of the second water level detection element 22, the control module controls the water purifier 100 to issue a water shortage reminder and controls the water purifier 100 to stop producing water.

[0136] In another embodiment, the low limit water level is lower than the water level line corresponding to the location of the second water level detection element 22, that is, the third critical point is lower than the second critical point. Specifically, when the water level in the cavity 111 reaches the water level line corresponding to the location of the second water level detection element 22, the water quality in the cavity 111 is good, so the water level in the cavity 111 has not reached the low limit water level, and the water purifier 100 does not need to issue a water shortage reminder and can continue to produce water until the water level reaches the low limit water level.

[0137] Furthermore, when the second water level information indicates that the water level in the cavity 111 has reached the water level line corresponding to the location of the second water level detection element 22, the control module, in response to the current TDS value being less than the second preset TDS value, determines that the water level in the cavity 111 has not reached the low limit water level, and the water purifier 100 continues to produce water, wherein the second preset TDS value is less than the first preset TDS value. When the water level in the cavity 111 reaches the location of the first water level detection element 21, if the current TDS value is less than the second preset TDS value, it indicates that the water quality is good at this time, and the water purifier 100 can continue to produce water. In this scheme, the water level in the cavity 111 is determined to have reached the low limit water level by judging the magnitude of the current TDS value in the raw water tank 11. In one specific embodiment, the second TDS value is 80, 90, or 100. Of course, in other feasible embodiments, the second preset TDS value is equal to the first preset TDS value.

[0138] Specifically, if the current TDS value is less than the second preset TDS value, the control module can execute any one of Scheme 1, Scheme 2 and Scheme 3.

[0139] Option 1

[0140] In one embodiment, the water purifier 100 further includes a timing module for acquiring the water production time, and a control module for determining that the water level in the container 111 has reached the low limit water level in response to the water purifier 100 continuing to produce water for a second preset water production time. Specifically, when the water level in the container 111 reaches the first water level detection element 21, if the current TDS value is less than the second preset TDS value, it indicates that the water quality is good at this time. The control module controls the water purifier 100 to continue producing water until the second preset water production time is reached. At this time, the water level in the container 111 is the low limit water level, and the control module controls the water purifier 100 to stop producing water and issue a water shortage reminder.

[0141] Option 2

[0142] In one embodiment, the control module is used to determine that the water level in the water purifier 111 has reached the low limit water level in response to the water purifier 100 continuing to produce water until the water tank 111 is empty. Specifically, when the water level in the water tank 111 reaches the water level line corresponding to the location of the first water level detection element 21, if the current TDS value is less than the second preset TDS value, it indicates that the remaining water quality in the raw water tank 11 is good, meeting the requirements for drinking water health when water production continues until the water in the raw water tank 11 is exhausted, and will not prematurely deplete the lifespan of the purification mechanism. Further, when the booster pump 31 is in an unloaded state, the control module determines that the water tank 111 is empty, and determines the current state of the water tank 111 as having water or being empty by the load state of the booster pump 31.

[0143] Option 3

[0144] In one embodiment, the control module is used to determine that the water level in the container 111 has reached a low limit water level in response to the water purifier 100 continuing to produce water until the current TDS value is greater than a second preset TDS value or greater than a first preset TDS value. Specifically, when the water level in the container 111 reaches the first water level detection element 21, if the current TDS value is less than the second preset TDS value, it indicates that the water quality is good and water production can continue. Furthermore, during the continued water production process, if the water quality is detected to have deteriorated to a certain extent, that is, the current TDS value is greater than the second preset TDS value or greater than the first preset TDS value, it indicates that the current water quality is no longer suitable for drinking. At this time, the water level in the container 111 is at a low limit water level, and the water purifier 100 is controlled to stop producing water and issue a water shortage reminder.

[0145] If the current TDS value is greater than or equal to the second preset TDS value, the control module can execute any one of Scheme 4, Scheme 5 and Scheme 6.

[0146] Option 4

[0147] In one embodiment, when the second water level information indicates that the water level in the cavity 111 has reached the water level line corresponding to the location of the second water level detection element 22, the control module is used to determine that the water level in the cavity 111 has reached the low limit water level in response to the current TDS value being ≥ the second preset TDS value. Specifically, when the water level in the cavity 111 reaches the water level line corresponding to the location of the second water level detection element 22, if the current TDS value is ≥ the second preset TDS value, it indicates that the water quality of the remaining water in the original water tank 11 is poor and water production cannot continue, and the water level at this time has reached the low limit water level.

[0148] Option 5

[0149] In one embodiment, when the second water level information indicates that the water level in the cavity 111 has reached the water level line corresponding to the location of the second water level detection element 22, the control module is used to determine that the water level in the cavity 111 has reached the low limit water level in response to the current TDS value being greater than or equal to the second preset TDS value and the water purifier 100 continuing to produce water for a third preset water production time. Specifically, when the water level in the cavity 111 reaches the water level line corresponding to the location of the second water level detection element 22, if the current TDS value is greater than or equal to the second preset TDS value, it indicates that the water quality of the remaining water in the raw water tank 11 is poor. The control module controls the water purifier 100 to continue producing water until the third preset water production time is reached. At this time, the water level in the cavity 111 is the low limit water level, and the control module controls the water purifier 100 to stop producing water and issue a water shortage reminder.

[0150] Option Six

[0151] In one embodiment, when the second water level information indicates that the water level in the cavity 111 has reached the water level line corresponding to the location of the second water level detection element 22, the control module is used to determine that the water level in the cavity 111 has reached the low limit water level in response to the current TDS value being greater than or equal to the second preset TDS value and the water purifier 100 continuing to produce water until the current TDS value is greater than the first preset TDS value. Specifically, if the first preset TDS value is greater than or equal to the current TDS value and the second preset TDS value, it indicates that the current water quality is acceptable. In this case, the water purifier 100 can continue to produce water until the current TDS value is greater than the first preset TDS value, indicating that the current water quality is poor. At this time, the water level in the cavity 111 is at the low limit water level, and the water purifier 100 is controlled to stop producing water and issue a water shortage reminder.

[0152] The water purifier 100 in this solution can execute any of the above-mentioned solutions based on the current water level and the current TDS value.

[0153] When the water level detection mechanism 2 malfunctions or the purification mechanism experiences filter blockage or other abnormalities, the water level in the cavity 111 may fall below the first water level detection element 21 while water production continues. In this case, the second water level information obtained by the second water level detection element 22 may not indicate that the water level in the cavity 111 has reached the water level line corresponding to the location of the second water level detection element 22, and the water quality in the cavity 111 may have deteriorated, preventing further water production. In this embodiment, when the first water level information indicates that the water level in the cavity 111 has reached the water level line corresponding to the location of the first water level detection element 21, the control module responds by allowing the water purifier 100 to continue producing water until a fourth preset water production time is reached and the second water level information indicates that the current water level in the cavity 111 has not reached the water level line corresponding to the location of the second water level detection element 22, thus determining that the water level in the cavity 111 has reached the water level line corresponding to the location of the second water level detection element 22. In this scheme, there are two triggering conditions for indicating that the current water level in the cavity 111 has reached the water level line corresponding to the location of the second water level detection element 22. The first is that the water level is determined by the second water level detection element 22 during normal use of the water purifier 100. The second is that when the water purifier 100 encounters an abnormal situation and continues to produce water for a period of time longer than the fourth preset water production time, the water level in the original water tank 11 will inevitably have reached or even fallen below the water level line corresponding to the location of the second water level detection element 22. However, the second water level information indicates that the current water level in the cavity 111 has not yet reached the water level line corresponding to the location of the second water level detection element 22. Therefore, the control module determines that the water level in the cavity 111 has reached the water level line corresponding to the location of the second water level detection element 22 to ensure that a water shortage reminder and water production can be stopped in a timely manner to ensure drinking water health.

[0154] In one implementation, such as Figures 13 to 15 As shown, the water purifier 100 also includes a light assembly 4.

[0155] When the current TDS value is greater than or equal to the first preset TDS value, the light assembly 4 executes the first lighting mode to indicate that the water purifier 100 is in the water production state; the light assembly 4 executes the second lighting mode to indicate that the water purifier 100 is in the raw water tank water shortage state.

[0156] When the current TDS value is less than the first preset TDS value, the light assembly 4 executes the third lighting mode to indicate that the water purifier 100 is in water production mode; the light assembly 4 executes the fourth lighting mode to indicate that the water purifier 100 is in a state of water shortage in the raw water tank.

[0157] In one embodiment, the first lighting mode and the third lighting mode are constant lighting modes of the first light, and the second lighting mode and the fourth lighting mode are flashing modes of the first light, so as to distinguish between the two states of indicating water production status and the state of water shortage in the raw water tank.

[0158] In one embodiment, the first and second lighting modes of the lamp assembly 4 have the same color, the third and fourth lighting modes have the same color, and the first and third lighting modes have different colors. In a specific embodiment, when the current TDS value is greater than or equal to a first preset TDS value, if the water purifier 100 is in water production mode, the lamp assembly 4 displays a solid red light; if the water purifier 100 is in a state where the raw water tank is low on water, the lamp assembly 4 displays a flashing red light. Since the water quality in the raw water tank 11 is already poor, a red light is used for indication, as red is more conspicuous. When the current TDS value is less than the first preset TDS value, if the water purifier 100 is in water production mode, the lamp assembly 4 displays a solid blue light; if the water purifier 100 is in a state where the raw water tank is low on water, the lamp assembly 4 displays a flashing blue light.

[0159] In one embodiment, the water purifier 100 also includes an audible alarm (not shown in the figure); the audible alarm sounds to indicate that the water purifier 100 is in a state of water shortage in the raw water tank, which can more effectively remind the user.

[0160] In one embodiment, both the first water level detection element 21 and the second water level detection element 22 are liquid level sensors (such as reed switches), for example... Figure 2 As shown, the water level detection mechanism 2 also includes a float 23, which is located within the cavity 111. The float 23 moves down with the water level in the original water tank 11. When the float 23 descends to the water level line corresponding to the location of the first water level detection element 21, the first water level detection element 21 acquires the position information of the float 23, i.e., obtains the first water level information. When the float 23 descends to the water level line corresponding to the location of the second water level detection element 22, the second water level detection element 22 acquires the position information of the float 23, i.e., obtains the second water level information.

[0161] Furthermore, level sensors are respectively installed on filter element holders 51. Specifically, the raw water tank 11 can be removed to collect water when replenishing raw water, such as... Figure 2 and Figure 7 As shown, the first water level detection element 21 and the second water level detection element 22 are installed on the filter element holder 51. Compared with the scheme of installing them on the original water tank 11, this makes it easier for the first water level detection element 21 and the second water level detection element 22 to be electrically connected to the control module.

[0162] Furthermore, such as Figure 2 and Figure 3As shown, the original water tank 11 is equipped with an installation box 112. The float 23 is located in the installation box 112 and can float up and down. The installation box 112 has a hollow structure, so that the water in the cavity 111 can enter the installation box 112. The float 23 is installed through the installation box 112, and the inner wall of the installation box 112 can also limit the floating space of the float 23.

[0163] In one implementation, such as Figures 1 to 4 As shown, the inner wall of the raw water tank 11 is provided with a support platform 113 and two oppositely arranged snap-fit ​​parts 114. The mounting box 112 has protrusions 1121 on both sides, and the two sides of the mounting box 112 are snapped into the snap-fit ​​parts 114 through the protrusions 1121. The bottom wall of the mounting box 112 is supported on the support platform 113. Furthermore, the inner wall of the raw water tank 11 is also provided with limiting ribs 115, which abut against the top wall of the mounting box 112 to restrict the upward movement of the mounting box 112. Moreover, by limiting the size of the limiting ribs 115 protruding from the inner wall of the mounting box 112, the user can install and remove the mounting box 112 by applying a certain force. When the float 23 is damaged or the user needs to clean the float 23, the mounting box 112 can be removed for replacement.

[0164] In one implementation, such as Figure 1 and Figure 2 As shown, the filter element holder 51 has two mounting seats 516 on the outer wall of the side facing the original water tank 11. The two mounting seats 516 are distributed from top to bottom, and the first water level detection element 21 and the second water level detection element 22 are installed on the corresponding mounting seats 516 in a one-to-one correspondence.

[0165] In one implementation, such as Figure 7 As shown, the water purifier 100 also includes an in-situ detection element 731 (such as a reed switch) and an in-situ magnet (not shown in the figure). The in-situ detection element 731 is installed on the outer wall of the filter cartridge holder 51 facing the raw water tank 11, and the in-situ magnet is installed on the outer wall of the raw water tank 11 facing the in-situ detection element 731. The in-situ detection element 731 and the in-situ magnet cooperate to detect whether the raw water tank 11 is installed in place.

[0166] In one implementation, such as Figure 1 , Figure 16 and Figure 17As shown, the water purifier 100 also includes a housing 52, a purified water tank 12, a kettle (not shown in the figure), and a water collection box 13. The housing 52 forms part of the outer contour structure of the water purifier 100. The housing 52 is provided with a first water inlet 521 and a second water inlet 522. The purified water tank 12 is used to store clean water after being treated by the purification mechanism. The purified water tank 12 is detachably installed in the housing 52. The kettle is placed below the second water inlet 522. The kettle is used to hold the drinking water supplied by the second water inlet 522 and can reheat the water in the kettle. The water collection box 13 is provided with a first water collection port 131 and a water collection chamber 132 that are connected. The first water inlet 521 is located above the first water collection port 131. When using the water purifier 100, users can take a water cup and fill it with water from the first water inlet 521 for immediate use. Alternatively, they can fill the water cup from the second water inlet 522 through the kettle, and then use the kettle to cook the water and health-preserving ingredients (tea, dendrobium, etc.) placed in it. When users need to take a water cup, they can pour the liquid from the kettle into the cup, making it convenient to use.

[0167] In one embodiment, as shown in 6, the top wall of the housing 52 is provided with an assembly port 523, through which the water tank 12 is inserted into the housing 52, making it convenient to put the water tank 12 in and out.

[0168] Furthermore, such as Figure 17 As shown, the top wall of the water tank 12 is flush with the top wall of the housing 52 to improve the aesthetics of the top wall profile of the water purifier 100.

[0169] Furthermore, such as Figure 17 As shown, the top wall of the water tank 12 is provided with a grip part 121, which is groove-shaped and is used for the user to grip the water tank 12.

[0170] In one implementation, such as Figure 1 and Figure 13 As shown, the water purifier 100 also includes a water circuit board 32, which is located below the raw water tank 11. The housing 52 and the raw water tank 11 are arranged sequentially in the left-right direction, and the kettle and water collection box 13 are located in front of the housing 52. The water circuit board 32 has multiple flow channels, flow channel inlets and flow channel outlets to connect the raw water tank 11 with the water circuit inside the housing 52.

[0171] In one implementation, such as Figure 5 , Figure 6 , Figure 13 and Figure 17 As shown, the water purifier 100 includes a base 53 and a raw water tank seat 54. The raw water tank seat 54 covers the outer periphery of the water circuit board 32, and the raw water tank 11 is placed on the raw water tank seat 54. The housing 52 and the raw water tank seat 54 are arranged sequentially in the left and right directions and are respectively installed on the base 53.

[0172] In one implementation, such as Figure 9 As shown, the water purifier 100 also includes a communicating vessel 33. The first water inlet of the communicating vessel 33 is connected to the purified water outlet of the purification mechanism through a second pipe 64. The water outlet of the communicating vessel 33 is connected to the purified water tank 12. The purified water flowing out of the post-filter of the purification mechanism is transported to the purified water tank 12 for temporary storage through the communicating vessel 33.

[0173] Furthermore, such as Figure 10 and Figure 11 As shown, the communicating vessel 33 extends vertically and is located between the water purification tank 12 and the filter cartridge holder 51. The communicating vessel 33 has a smaller front-to-back dimension, which facilitates a compact arrangement of the water purification tank 12, communicating vessel 33, and filter cartridge holder 51 from front to back. The communicating vessel 33 includes a first interface 331 and a second interface 332. The first interface 331 is connected to the second pipe 64 to form the first water inlet of the communicating vessel 33, and the second interface 332 is connected to the water purification tank 12 to form the water outlet of the communicating vessel 33. Figure 12 As shown, the communicating vessel 33 has a high-level float 335 and a low-level float 336 inside its chamber, and an anti-overflow reed switch 337 on the outside of the communicating vessel 33 to detect the water level. A high-level detector and a low-level detector (not shown) are installed on the outside of the communicating vessel 22. When the high-level detector fails to detect the high-level float 335, the water purifier 100 starts producing water. The technology of starting water production based on the detection of the floats and water level detectors is well-known in the art and will not be described further in this application.

[0174] Furthermore, such as Figure 7 and Figure 8 As shown, the water purifier 100 also includes a heating element 34, a first valve 35, a first pipe 61, and a second valve 36. The inlet end of the heating element 34 is connected to the outlet end of the purified water tank 12. The heating element 34 is used to heat the water output from the purified water tank 12 to supply hot water. The inlet end of the first valve 35 is connected to the outlet end of the heating element 34, and the first outlet end of the first valve 35 is connected to the first water supply port 521. The inlet end of the first pipe 61 is connected to the second outlet end of the first valve 35. The inlet end of the second valve 36 is connected to the outlet end of the first pipe 61, and the first outlet end of the second valve 36 is connected to the second water supply port 522.

[0175] like Figure 7 , Figure 8 and Figure 17As shown, the raw water tank 11, water circuit board 32, purification mechanism, communicating vessel 33, purified water tank 12, heating component 34, first valve 35, and first water supply port 521 are sequentially connected to form a first water supply path. The raw water tank 11, water circuit board 32, purification mechanism, communicating vessel 33, purified water tank 12, heating component 34, first valve 35, first pipeline 61, second valve 36, and second water supply port 522 are sequentially connected to form a second water supply path. Water in the raw water tank 11 flows into the purification mechanism through the water circuit board 32. The purified water is then poured into the purified water tank 12 for temporary storage through the communicating vessel 33. When a user takes water from the first water supply port 521 using a water cup, the purified water in the purified water tank 12 flows sequentially through the heating component 34 and the first valve 35 before being supplied to the water cup through the first water supply port 521. When water is drawn from a kettle, the purified water in the water tank 12 flows sequentially through the heating element 34, the first valve 35, the first pipeline 61 and the second valve 36, and is then supplied to the kettle through the second water supply port 522.

[0176] Furthermore, such as Figure 8 and Figure 10 As shown, the second outlet of the second valve 36 is connected to the second inlet of the connector 33. When the water purifier 100 is in an unused state for a preset standby time, the purified water tank 12, heating element 34, first valve 35, first pipe 61, second valve 36, connector 33 and purified water tank 12 are connected in sequence to form a circulating water circuit, and the circulating water circuit is operated. The water in the purified water tank 12 is heated by the heating element 34 and flows in sequence through the first valve 35, first pipe 61, second valve 36 and connector 33 before flowing back into the purified water tank 12 to perform hot water sterilization treatment to avoid the growth of bacteria in the water circuit.

[0177] Furthermore, such as Figure 10 and Figure 11 As shown, the exterior of the water tank 12 is equipped with a drain valve body 37, and the two are connected. The drain valve body 37 is connected to the second interface 332 of the communicating vessel 33. A diaphragm pump 38 is installed on the pipeline between the heating component 34 and the drain valve body 37. Specifically, the drain valve body 37 is connected to the inlet of the diaphragm pump 38 through a third pipeline 65, the outlet of the diaphragm pump 38 is connected to the heating component 34 through a fourth pipeline 66, and the outlet of the heating component 34 is connected to the first valve 35 through a fifth pipeline 67. When water is produced, the purified water enters the purified water tank 12 after passing through the connector 33 and the drain valve 37 in sequence. When the water purifier 100 supplies water, the purified water tank 12 and the heating component 34 are connected by the drain valve 37 and the diaphragm pump 38 in sequence. Under the power provided by the diaphragm pump 38, the purified water in the purified water tank 12 flows through the drain valve 37, the third pipeline 65, the diaphragm pump 38, the fourth pipeline 66, the heating component 34, the fifth pipeline 67 and the first valve 35 in sequence.

[0178] In one implementation, such as Figures 8 to 11 As shown, the communicating vessel 33 also includes a return inlet 333, which is connected to the second valve 36 via the sixth pipe 68. When the water purifier 100 is in an unused state for a preset standby time, the purified water tank 12, the drain valve body 37, the third pipe 65, the diaphragm pump 38, the fourth pipe 66, the heating component 34, the fifth pipe 67, the first valve 35, the first pipe 61, the second valve 36, the sixth pipe 68, the communicating vessel 33, the drain valve body 37, and the purified water tank 12 are connected in sequence to form a circulating water circuit, and the corresponding pipes and components on the pipes are sterilized by hot water.

[0179] It should be noted that the inlet of the first valve 35 is selectively connected to both its first and second outlets to supply water to the first water supply port 521, or to the inlet of the second valve 36. For example, when water needs to be discharged from the first water supply port 521, the inlet of the first valve 35 is connected to its first outlet but not to its second outlet. Similarly, the inlet of the second valve 36 is selectively connected to both its first and second outlets to supply water to the second water supply port 522, or to its second outlet. For example, when water needs to be discharged from the second water supply port 522, the inlet of the first valve 35 is connected to its second outlet, and the inlet of the second valve 36 is connected to its first outlet. Furthermore, during water system sterilization, the inlet of the first valve 35 is connected to its second outlet, and the inlet of the second valve 36 is connected to its second outlet.

[0180] In one implementation, such as Figure 8 and Figure 9 As shown, a water vapor separation component 39 is provided between the first water outlet end of the first valve 35 and the first water supply port 521. The water flowing out of the first water outlet end of the first valve 35 is separated into water vapor by the water vapor separation component 39 and then flows to the first water supply port 521. This avoids excessive gas in the water flow output from the first water supply port 521, which would cause water to splash and affect the user experience.

[0181] Furthermore, such as Figure 10 and Figure 11 As shown, the communicating vessel 33 also includes an air inlet 334. The exhaust port of the water vapor separation component 39 is connected to the air inlet 334 of the communicating vessel 33 through the seventh pipe 69, and the communicating vessel 33 is connected to the atmosphere.

[0182] In one implementation, such as Figures 7 to 11As shown, the second valve 36 and the first valve 35 are spaced apart along the left and right sides of the water purifier 100, and both the second valve 36 and the first valve 35 are located between the water tank 12 and the booster pump 31. The return inlet 333 is located on the left side wall of the communicating vessel 33, and the air inlet 334 is located on the right side wall of the communicating vessel 334. One end of the sixth pipe 68 is connected to the return inlet 333, and the other end extends from the left side of the water tank 12 and extends into the lower part of the water tank 12 and connects to the second valve 36. One end of the seventh pipe 69 is connected to the air inlet 334, and the other end extends from the right side of the water tank 12 and extends into the front of the water tank 12 and connects to the water vapor separation component 39. The components are arranged compactly, which helps to reduce the overall size of the water purifier 100.

[0183] In one implementation, such as Figure 8 As shown, the water purifier 100 includes a fixed housing 55, a booster pump 31 is placed vertically and fixed inside the fixed housing 55, the booster pump 31 extends partially outside the bottom wall of the fixed housing 55, the purified water tank 12 is located above the fixed housing 55, and the first raw water pipeline 621, the second raw water pipeline 622 and the concentrated water output pipeline 63 are located below the fixed housing 31.

[0184] In one implementation, such as Figure 13 and Figure 17 As shown, an extension seat 531 is provided on the front side of the base 53, and the kettle is placed on the extension seat 531; the water collection box 13 abuts against one side wall of the extension seat 531, and the two together form the base structure of the water purifier 100.

[0185] In one implementation, such as Figure 17 As shown, the base 53 is provided with a lower coupler 532, and the kettle is provided with an upper coupler. The upper coupler and the lower coupler 532 are electrically connected to each other to perform secondary heating on the water in the kettle.

[0186] Furthermore, such as Figure 17 As shown, the housing 52 is equipped with a display screen 524, which is used to display the working status of the kettle. The displayed information includes, but is not limited to, the current water temperature and the current water level. For easy viewing, the display screen 524 is mounted on the front of the housing 52 and is tilted so that it faces the user.

[0187] In one implementation, such as Figure 6 , Figure 17 As shown, a selection switch 525 is provided on the housing 52. The selection switch 525 is located below the display screen 524. The selection switch 525 can be used to trigger the second water supply port 522 to dispense water.

[0188] In one embodiment, a power module (not shown) is provided inside the housing 52, which supplies power to the kettle. Of course, a power module can also be omitted, and the kettle can be used directly by plugging it in.

[0189] In one implementation, such as Figure 16 and Figure 17 As shown, the water collection box 13 has a placement part 133 and a second water inlet 134. The placement part 133 is located on the opposite side of the first water inlet 131 from the placement position of the kettle. The placement part 133 is used to place a water cup. When the user needs to use the water from the kettle, the water cup is first placed on the placement part 133, and then the kettle is operated to pour water, avoiding interference from the first water inlet 521 or the second water inlet 522 with the pouring operation of the kettle. The second water inlet 134 is connected to the water collection chamber 132, and can collect any spilled water during the pouring process.

[0190] Furthermore, such as Figure 16 As shown, the placement part 133 has a concave structure, which makes it easy for the user to place it accurately.

[0191] In one implementation, such as Figures 13 to 15 As shown, the light assembly 4 is located below the raw water tank 11. The raw water tank 11 is provided with a first light-transmitting window, so that the user can observe the display of the light assembly 4 through the first light-transmitting window to understand the water production status of the water purifier 100 and the water shortage status of the raw water tank.

[0192] Furthermore, the raw water tank 11 has a light-transmitting structure, which is aesthetically pleasing and easy to process. When the raw water tank is made of a light-transmitting material, since the raw water tank itself is translucent, the aforementioned light-transmitting window may not be required.

[0193] In one implementation, such as Figure 15 As shown, the lamp assembly 4 is located between the raw water tank 11 and the water circuit board 32. Utilizing the space between the raw water tank 11 and the water circuit board 32 to accommodate the lamp assembly 4 is beneficial for the compact structure of the water purifier 100. Preferably, the raw water tank base 54 is a cover structure, which covers the outer periphery of the water circuit board 32, and the lamp assembly 4 is located between the water circuit board 32 and the raw water tank base 54.

[0194] Furthermore, such as Figure 14 and Figure 15 As shown, the lamp assembly 4 is detachably connected to the water circuit board 32. When the lamp assembly 4 malfunctions, it can be removed for repair or replacement.

[0195] Furthermore, the connection methods between the lamp assembly 4 and the water circuit board 32 include snap-fit, fastening, or adsorption connection, which are simple in structure and quick to install and remove.

[0196] In one implementation, such as Figure 15As shown, the lamp assembly 4 includes a housing 41, a lamp board 42, and lamp beads 43. The housing 41 is detachably connected to the water channel plate 32 and the housing 41 is provided with a second light-transmitting window. The housing 41 has an opening on the side facing the water channel plate 32. The lamp board 42 is installed inside the housing 41 through the opening. The lamp beads 43 are connected to the lamp board 42 and are used to emit indicator light. The light passes through the second light-transmitting window and the first light-transmitting window in sequence to be displayed outward.

[0197] Furthermore, such as Figure 13 and Figure 15 As shown, the original water tank base 54 has a through hole 541, and the top of the box body 41 is inserted into the through hole 541, and the assembly of the two is sealed by a sealing ring 71. Specifically, in order to improve the aesthetic appearance of the water purifier 100, the original water tank base 54 is not a light-transmitting structure to cover the outline of the water circuit board 32, and the lamp assembly 4 emits light from the through hole 541 of the original water tank base 54 to the original water tank 11.

[0198] Furthermore, such as Figures 13 to 15 As shown, the upper surface of the box 41 is provided with a protrusion 411, which is inserted into the through hole 541. The protrusion 411 and the through hole 541 cooperate and also serve a positioning function. Furthermore, the protrusion 411 forms the second light-transmitting window of the box 41, through which the light emitted by the LED bead 43 located inside the box 41 is transmitted to the original water tank 11.

[0199] In one implementation, such as Figure 14 and Figure 15 As shown, the upper surface of the water channel plate 32 is provided with two opposing support ribs 321, the support ribs 321 are provided with fastening grooves 3211, and the box body 41 is provided with two opposing fastening parts 412, the fastening grooves 3211 and the fastening parts 412 are fastened one by one.

[0200] Furthermore, such as Figure 14 As shown, the box body 41 has two extended ribs 413 on one side. When the box body 41 is assembled onto the water channel plate 32, the two extended ribs 413 are positioned opposite to the two sides of one of the support ribs 321 of the water channel plate 32, which serves as a positioning function.

[0201] In one embodiment, the box 41 is a light-transmitting structure, eliminating the need for a separate light-transmitting window and facilitating assembly.

[0202] It should be understood that the above embodiments are exemplary and are not intended to encompass all possible implementations included in the claims. Various modifications and changes can be made to the above embodiments without departing from the scope of this disclosure. Similarly, the various technical features of the above embodiments can be arbitrarily combined to form other embodiments of the present invention that may not be explicitly described. Therefore, the above embodiments only illustrate several implementations of the present invention and do not limit the scope of protection of this patent.

Claims

1. A net drinker, characterized in that, The net drinking machine (100) comprises: A raw water tank (11) comprising a cavity (111) for storing raw water; A purification mechanism, the water inlet end of which communicates with the raw water tank (11), and which at least comprises a reverse osmosis membrane filter element, the concentrated water supply port of the reverse osmosis membrane filter element communicating with the raw water tank (11); when the net drinking machine (100) starts to make water, the raw water in the cavity (111) flows out and is purified through the purification mechanism, and the concentrated water generated by the reverse osmosis membrane filter element flows back to the raw water tank (11); A water level detection mechanism (2) comprising a first water level detection element (21) and a second water level detection element (22) distributed in a spaced-apart manner from top to bottom, for obtaining water level information in the cavity (111); A control module for receiving second water level information obtained by the second water level detection element (22), and for controlling the net drinking machine (100) to issue a water shortage reminder instruction when, during water making, the second water level information indicates that the water level in the cavity (111) has reached a water level line corresponding to the position of the second water level detection element (22), and it is judged that the water level in the cavity (111) has reached a low limit water level. The cavity (111) forms a first space between the first water level detection element (21) and the second water level detection element (22), and the volume V1 of the first space is configured such that, during the process of the net drinking machine (100) issuing a water shortage reminder instruction, the backwater amount of the concentrated water cannot fill the first space, so that the net drinking machine (100) remains to issue a water shortage reminder instruction.

2. The purified drinking machine according to claim 1, characterized in that The net drinking machine (100) further comprises a TDS detection mechanism for obtaining a current TDS value of the water in the cavity (111).

3. The purified water machine according to claim 2, wherein The control module is further configured to receive first water level information obtained by the first water level detection element (21), and to control the net drinking machine (100) to continue making water until a first preset water making time is reached, and then to control the net drinking machine (100) to stop making water and issue a water shortage reminder instruction, when, during water making, the first water level information indicates that the water level in the cavity (111) has reached a water level line corresponding to the position of the first water level detection element (21), and it is judged that the current TDS value is greater than or equal to a first preset TDS value.

4. The POU water purifier according to claim 2, wherein, The control module is further configured to receive first water level information obtained by the first water level detection element (21), and to control the net drinking machine (100) to continue making water until the second water level information indicates that the water level in the cavity (111) has reached a water level line corresponding to the position of the second water level detection element (22) and the water level in the cavity (111) reaches a low limit water level, and then to control the net drinking machine (100) to issue a water shortage reminder instruction, when, during water making, the first water level information indicates that the water level in the cavity (111) has reached a water level line corresponding to the position of the first water level detection element (21), and it is judged that the current TDS value is less than a first preset TDS value.

5. The purified water machine according to claim 4, characterized in that The control module is further configured to, during water production, if the second water level information indicates that the water level in the cavity (111) has reached a water level corresponding to the position of the second water level detection element (22), and it is determined that the water level in the cavity (111) reaches a lower limit water level, control the water purifying and drinking machine (100) to stop water production.

6. The purified drinking machine according to claim 1 or 4, characterized in that The water level corresponding to the position of the second water level detection element (22) is configured as the lower limit water level.

7. The purified drinking machine according to claim 4 or 5, characterized in that The lower limit water level is lower than the water level corresponding to the position of the second water level detection element (22).

8. The POU water purifier according to claim 7, wherein, When the second water level information indicates that the water level in the cavity (111) has reached the water level corresponding to the position of the second water level detection element (22), the control module is configured to, in response to the current TDS value being less than a second preset TDS value, determine that the water level in the cavity (111) does not reach the lower limit water level, and the water purifying and drinking machine (100) continues water production, wherein the second preset TDS value is less than the first preset TDS value.

9. The POU water purifier according to claim 8, wherein, The water purifying and drinking machine (100) further comprises a timing module configured to acquire a water production duration. The control module is configured to, in response to the water purifying and drinking machine (100) continuing water production for a second preset water production duration, determine that the water level in the cavity (111) reaches the lower limit water level. Preferably, the control module is configured to, in response to the water purifying and drinking machine (100) continuing water production until the cavity (111) is empty of water, determine that the water level in the cavity (111) reaches the lower limit water level. Preferably, the control module is configured to, in response to the water purifying and drinking machine (100) continuing water production until the current TDS value is greater than the second preset TDS value or greater than the first preset TDS value, determine that the water level in the cavity (111) reaches the lower limit water level. Preferably, the water purifying and drinking machine (100) further comprises a booster pump (31) configured to provide power for raw water flowing out of the cavity (111) to flow through the purification mechanism; and the control module is configured to, in response to the booster pump (31) being idle, determine that the cavity (111) is empty of water. Preferably, when the second water level information indicates that the water level in the cavity (111) has reached the water level corresponding to the position of the second water level detection element (22), the control module is configured to, in response to the current TDS value being greater than or equal to a second preset TDS value, determine that the water level in the cavity (111) reaches the lower limit water level. Preferably, when the second water level information indicates that the water level in the cavity (111) has reached the water level corresponding to the position of the second water level detection element (22), the control module is configured to, in response to the current TDS value being greater than or equal to a second preset TDS value and the water purifying and drinking machine (100) continuing water production for a third preset water production duration, determine that the water level in the cavity (111) reaches the lower limit water level. Preferably, when the second water level information represents that the water level in the container cavity (111) has reached the water level line corresponding to the position of the second water level detection element (22), the control module is configured to determine that the water level in the container cavity (111) reaches the low limit water level in response to the current TDS value being greater than or equal to the second preset TDS value and the water making of the water purifier (100) continuing until the current TDS value is greater than the first preset TDS value. Preferably, when the first water level information represents that the water level in the container cavity (111) has reached the water level line corresponding to the position of the first water level detection element (21), the control module is configured to determine that the water level in the container cavity (111) reaches the water level line corresponding to the position of the second water level detection element (22) in response to the water making of the water purifier (100) continuing until a fourth preset water making time is reached and the second water level information representing that the current water level in the container cavity (111) does not reach the water level line corresponding to the position of the second water level detection element (22). Preferably, the water purifier (100) further comprises a lamp assembly (4). When the current TDS value is greater than or equal to the first preset TDS value, the lamp assembly (4) executes a first light-on mode to indicate that the water purifier (100) is in a water making state; and the lamp assembly (4) executes a second light-on mode to indicate that the water purifier (100) is in a raw water tank water shortage state. When the current TDS value is less than the first preset TDS value, the lamp assembly (4) executes a third light-on mode to indicate that the water purifier (100) is in a water making state; and the lamp assembly (4) executes a fourth light-on mode to indicate that the water purifier (100) is in a raw water tank water shortage state. Preferably, the first light-on mode is a constant light mode of a first light, and the second light-on mode is a flashing mode of the first light. Preferably, the third light-on mode is a constant light mode of a second light, and the fourth light-on mode is a flashing mode of the fourth light. Preferably, the first light-on mode and the second light-on mode of the lamp assembly (4) are of the same color, the third light-on mode and the fourth light-on mode are of the same color, and the first light-on mode and the third light-on mode are of different colors. Preferably, the water purifier (100) further comprises a sound alarm; and the sound alarm emits an alarm sound to indicate that the water purifier (100) is in a raw water tank water shortage state. Preferably, the first water level detection element (21) and the second water level detection element (22) are both liquid level sensors, and the water level detection mechanism (2) further comprises a float (23) located in the container cavity (111). The first water level detection element (21) and the second water level detection element (22) respectively acquire the current water level information by acquiring position information of the float (23). Preferably, the water purifier (100) further comprises a filter element holder (51), and the purification mechanism and the liquid level sensor are respectively installed on the filter element holder (51). Preferably, the raw water tank (11) is provided with a mounting box (112), and the float is located in the mounting box (112) and can float up and down.

10. The purified drinking machine according to any one of claims 1-5, characterized in that, The purified drinking machine (100) further comprises: a cabinet (52) constituting a partial outer contour structure of the purified drinking machine (100), and provided with a first water supply port (521) and a second water supply port (522); a purified water tank (12) for storing clean water treated by the purification mechanism, and detachably mounted in the cabinet (51); a kettle placed below the second water supply port (522) for containing drinking water supplied by the second water supply port (522) and performing secondary heating; a water collecting box (13) provided with a first water collecting port (131) and a water collecting cavity (132) in communication, and the first water supply port (521) is located above the first water collecting port (131). Preferably, the top wall of the cabinet (52) is provided with an assembly opening (523), and the purified water tank (12) is inserted into the cabinet (52) from the assembly opening (523). Preferably, the purified drinking machine (100) further comprises a water circuit board (32) located below the raw water tank (11), and the cabinet (52) and the raw water tank (11) are sequentially arranged in the left-right direction, and the kettle and the water collecting box (13) are located in front of the cabinet (52). Preferably, the purified drinking machine (100) further comprises a communicating device (33), a first water inlet end of the communicating device (33) is connected with a purified water outlet of the purification mechanism, and a water outlet end of the communicating device (33) is connected with the purified water tank (12). Preferably, the purified drinking machine (100) further comprises: a heating assembly (34) with a water inlet end connected with a water outlet end of the purified water tank (12); a first valve (35) with a water inlet end connected with a water outlet end of the heating assembly (34), and a first water outlet end of the first valve (35) is connected with the first water supply port (521); a first pipeline (61) with a water inlet end connected with a second water outlet end of the first valve (35); a second valve (36) with a water inlet end connected with a water outlet end of the first pipeline (61), and a first water outlet end of the second valve (36) is connected with the second water supply port (522); wherein the raw water tank (11), the water circuit board (32), the purification mechanism, the communicating device (33), the purified water tank (12), the heating assembly (34), the first valve (35) and the first water supply port (521) are sequentially connected to form a first water supply circuit; the raw water tank (11), the water circuit board (32), the purification mechanism, the communicating device (33), the purified water tank (12), the heating assembly (34), the first valve (35), the first pipeline (61), the second valve (36) and the second water supply port (522) are sequentially connected to form a second water supply circuit. Preferably, a second water outlet end of the second valve (36) is connected with a second water inlet end of the communicating device (33). When the length of time that the water purifying machine (100) is in the non-use state reaches the preset standby length of time, the water purifying tank (12), the heating assembly (34), the first valve (35), the first pipeline (61), the second valve (36), the communicating vessel (33) and the water purifying tank (12) are sequentially communicated to form a circulating water circuit, and the circulating water circuit is operated to perform hot water sterilization treatment. Preferably, the water purifying tank (12) is externally provided with a drain valve body (37), the drain valve body (37) is connected with the water purifying tank (12), the heating assembly (34) and the communicating vessel (33) respectively, and a diaphragm pump (38) is arranged on the connecting pipeline of the drain valve body (37) and the heating assembly (34); When the water purifying machine (100) supplies water, the water purifying tank (12) and the heating assembly (34) are communicated through the sequentially connected drain valve body (37) and diaphragm pump (38); When the length of time that the water purifying machine (100) is in the non-use state reaches the preset standby length of time, the water purifying tank (12), the drain valve body (37), the diaphragm pump (38), the heating assembly (34), the first valve (35), the first pipeline (61), the second valve (36), the communicating vessel (33), the drain valve body (37) and the water purifying tank (12) are sequentially communicated to form a circulating water circuit. Preferably, a water-vapor separation assembly (39) is arranged between the first water outlet end of the first valve (35) and the first water supply port (521), and the water flowing out of the first water outlet end of the first valve (35) flows to the first water supply port (521) after being subjected to water-vapor separation treatment by the water-vapor separation assembly (39). Preferably, the exhaust port of the water-vapor separation assembly (39) is communicated with the communicating vessel (33), and the communicating vessel (33) is communicated with the atmosphere. Preferably, the water purifying machine (100) further comprises a base (53), and the machine shell (52) is installed above the base (53); A front side of the base (53) is provided with an extension seat (531), the kettle is placed on the extension seat (531), the water collecting box (13) abuts against a side wall of the extension seat (531), and the water collecting box (13) and the extension seat (531) jointly form a base structure of the water purifying machine (100). Preferably, the water purifying machine (100) further comprises a base (53), and the machine shell (52) is installed above the base (53); The base (53) is provided with a lower coupler (532), the kettle is provided with an upper coupler, the upper coupler is electrically connected with the coupler (532) to perform secondary heating on the water in the kettle. Preferably, the machine shell (52) is provided with a display screen (524) for displaying the working state of the kettle. Preferably, the machine shell (52) is internally provided with a power supply module for supplying power to the kettle. Preferably, the water collecting box (13) is provided with a placing portion (133) and a second water collecting opening (134), the placing portion (133) is located on the other side of the first water collecting opening (131) away from the placing position of the kettle, the placing portion (133) is used for placing a cup, and the second water collecting opening (134) is in communication with the water collecting cavity (132). Preferably, the water purifying machine (100) comprises a lamp assembly (4) located below the raw water tank (11); the raw water tank (11) is provided with a first light-transmitting window, and the lamp assembly (4) is used for indicating the water making condition of the water purifying machine (100) and the raw water tank water shortage condition. Preferably, the raw water tank (11) is a light-transmitting structure. Preferably, the water purifying machine (100) comprises a waterway board (32), and the lamp assembly (4) is located between the raw water tank (11) and the waterway board (32). Preferably, the lamp assembly (4) is detachably connected to the waterway board (32). Preferably, the connection mode of the lamp assembly (4) and the waterway board (32) comprises clamping, buckling or adsorbing connection. Preferably, the lamp assembly (4) comprises: a box body (41) detachably connected to the waterway board (32) and provided with a second light-transmitting window; a lamp plate (42) connected in the box body (41); and a lamp bead (43) connected to the lamp plate (42). Preferably, the water purifying machine (100) comprises a raw water tank seat (54) covering the outer periphery of the waterway board (32); the raw water tank (11) is placed on the raw water tank seat (54); the raw water tank seat (54) is provided with a through hole (541), the top of the box body (41) is inserted into the through hole (541), and the assembly positions of the two are sealed by a sealing ring (71). Preferably, the upper surface of the box body (41) is provided with a protruding portion (411) inserted into the through hole (541). Preferably, the upper surface of the waterway board (32) is provided with at least two oppositely arranged supporting ribs (321) provided with buckling grooves (3211); the box body (41) is provided with at least two oppositely arranged buckling portions (412), and the buckling grooves (3211) and the buckling portions (412) are buckled one by one. Preferably, the box body (41) is a light-transmitting structure.

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