Water treatment equipment

Abstract

The utility model relates to water treatment equipment. The water treatment equipment comprises a machine body, a cold water tank, an ice making box, an evaporator assembly and a pump. The cold water tank is arranged on the machine body and is configured to be used for storing liquid; the ice making box is rotationally connected to the cold water tank and is constructed to be provided with a containing cavity; the evaporator assembly is configured to be located in the ice making box; the evaporator assembly comprises an evaporation pipe and at least one protruding part extending downwards from the evaporation pipe. The pump is used for pumping liquid in the cold water tank into the ice making box; a water outlet assembly is arranged on the ice-making box, the water outlet assembly comprises an overflow port communicated with the containing cavity of the ice-making box, and the overflow port is constructed to be lower than at least part of the evaporation pipe; and during water cooling, liquid higher than the overflow port circularly flows back to the cold water tank, so that the liquid in the ice making box covers at least part of the evaporation pipe. The refrigerating capacity of the evaporation pipe is utilized when water is refrigerated, the waste of the refrigerating capacity is reduced, and the refrigerating efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of electrical appliances, in particular to a water treatment device. BACKGROUND

[0002] With the improvement of living standards, more and more people choose to purchase electrical appliances with ice-making function. In addition to the ice-making function, such devices can usually also make cold water, which usually uses an evaporator to achieve cooling and freezing functions, the evaporator including an evaporation tube and a protruding portion, which are internally communicated and have a cooling medium inside.

[0003] In the prior art, whether the user wants to take cold water or ice, the amount of water pumped into the ice-making box is basically the same, and the liquid level in the ice-making box cannot be effectively monitored. For example, when making ice, the liquid in the ice-making box can cover part of the protruding portion, thereby forming ice on the protruding portion; however, when making cold water, the amount of liquid in the ice-making box can still only cover part of the protruding portion, thereby causing the cooling capacity of the evaporation tube to be unable to be utilized, resulting in waste. CONTENT OF THE UTILITY MODEL

[0004] The present disclosure provides a water treatment device to solve the problems in the prior art.

[0005] According to a first aspect of the present disclosure, a water treatment device is provided, comprising:

[0006] a machine body;

[0007] a cold water tank arranged on the machine body and configured to store liquid;

[0008] an ice-making box rotationally connected to the cold water tank and configured to have a cavity;

[0009] an evaporator assembly configured to be located in the ice-making box; the evaporator assembly includes an evaporation tube and at least one protruding portion extending downward from the evaporation tube;

[0010] a pump for pumping liquid from the cold water tank into the ice-making box;

[0011] an outlet assembly is arranged on the ice-making box, the outlet assembly includes an overflow port in communication with the cavity of the ice-making box, the overflow port is configured to be lower than at least part of the evaporation tube; when making cold water, the liquid above the overflow port is configured to circulate back to the cold water tank, so that the liquid in the ice-making box covers at least part of the evaporation tube.

[0012] In one embodiment of the present disclosure, the pump is configured to operate at a constant flow rate; the water outlet assembly comprises an ice-making water outlet communicating with the ice-making box cavity, the ice-making water outlet is configured to be arranged on the ice-making box side wall at a position corresponding to the protruding portion;

[0013] During ice-making, the ice-making water outlet is in an open state, and liquid higher than the ice-making water outlet is configured to be circulated back to the cold water tank, so that the liquid level in the ice-making box is leveled with the ice-making water outlet.

[0014] In one embodiment of the present disclosure, the water outlet assembly comprises a water inlet communicating with the ice-making box cavity, the water inlet is configured to be arranged on the ice-making box at a position adjacent to the bottom of the ice-making box and lower than the ice-making water outlet; during ice-making, the water inlet is configured to be in a closed state.

[0015] In one embodiment of the present disclosure, the pump is configured to stop after pumping a predetermined amount of liquid into the ice-making box during ice-making; or, the pump is configured to continuously pump liquid into the ice-making box during ice-making, and the flow rate of the pump is less than or equal to the maximum water outlet flow rate of the ice-making water outlet.

[0016] In one embodiment of the present disclosure, the overflow port is configured to be higher than the ice-making water outlet; during ice-making, the water inlet and the ice-making water outlet are configured to be in a closed state, the pump is configured to continuously pump liquid into the ice-making box, and liquid higher than the overflow port is configured to be circulated back to the cold water tank, so that the liquid level in the ice-making box is leveled with the overflow port.

[0017] In one embodiment of the present disclosure, the overflow port is a notch arranged on the top end face of the ice-making box.

[0018] In one embodiment of the present disclosure, a water valve is movably arranged at the water inlet and / or the ice-making water outlet; an actuator is arranged on the machine body, the actuator is configured to control the corresponding water valve to move between a closed position and an open position.

[0019] In one embodiment of the present disclosure, the ice-making box is configured to rotate relative to the cold water tank between a first position and a second position; when located at the first position, the opening of the ice-making box faces upward to receive liquid, and the water valve is located at a position corresponding to the actuator corresponding thereto; when located at the second position, the water valve is disengaged from the actuator.

[0020] In one embodiment of the present disclosure, the water outlet corresponding to the water valve is kept in the closed position during ice making; after ice making is completed and before the ice making box is rotated to the second position, the actuator controls the water valve corresponding to the water outlet to move to the open position, and the liquid in the ice making box is configured to flow into the cold water tank through the water outlet.

[0021] In one embodiment of the present disclosure, the pump is configured to operate at a first flow rate or a second flow rate, wherein the first flow rate is less than the second flow rate; the water outlet assembly includes a water outlet communicating with the ice making box cavity, and the water outlet is arranged on the ice making box adjacent to the bottom thereof;

[0022] During ice making, after the pump is configured to pump a predetermined amount of liquid into the ice making box at the second flow rate, the pump is switched to continuously pump liquid at the first flow rate, and the water outlet is configured to be in an open state, and the water outlet flow rate is equal to the first flow rate, so that the liquid level in the ice making box is kept at a height covering at least part of the protruding portion.

[0023] In one embodiment of the present disclosure, the overflow port is a notch arranged on the top end face of the ice making box; during chilled water making, the water outlet is configured to be in an open state, the pump is configured to continuously pump liquid into the ice making box at the second flow rate, and the liquid in the ice making box is configured to flow into the cold water tank through the water outlet and the overflow port, so that the liquid level height in the ice making box is kept at the level of the overflow port.

[0024] In one embodiment of the present disclosure, an ice basket is arranged in the cold water tank below the ice making box, and the ice basket has an ice containing area; the ice basket is arranged adjacent to one side of the water outlet assembly and has a baffle extending in the vertical direction, and the baffle is configured to form a backflow channel separated from the ice containing area with the inner wall of the cold water tank, and the liquid flowing out of the water outlet assembly is configured to flow into the cold water tank through the backflow channel.

[0025] One beneficial effect of the present disclosure is that by arranging an overflow port communicating with the ice making box and lower than at least part of the evaporating pipe, the liquid in the ice making box covers at least part of the evaporating pipe during chilled water making, thereby utilizing the cold energy of the evaporating pipe, reducing the waste of cold energy, and improving the refrigeration efficiency. In addition, the liquid overflowing from the ice making box cavity can be circulated back to the cold water tank, and the circulating liquid can continuously bring cold energy back to the cold water tank, so that the temperature of the entire cold water tank is reduced, thereby improving the chilled water making efficiency.

[0026] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments thereof, with reference made to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0028] Figure 1 is a structural schematic diagram of a water treatment device provided by an embodiment of the present disclosure;

[0029] Figure 2 is a structural schematic diagram of a water treatment device provided by an embodiment of the present disclosure;

[0030] Figure 3 is a structural schematic diagram of an ice-making box and an evaporator assembly provided by an embodiment of the present disclosure;

[0031] Figure 4 is a structural schematic diagram of an evaporator assembly provided by an embodiment of the present disclosure;

[0032] Figure 5 is a sectional view of a water treatment device provided by an embodiment of the present disclosure;

[0033] Figure 6 is another angle sectional view of a water treatment device provided by an embodiment of the present disclosure;

[0034] Figure 7 is a partial sectional view of a water treatment device in an ice-making process provided by an embodiment of the present disclosure;

[0035] Figure 8 is a partial sectional view of a water treatment device in an ice-making process provided by an embodiment of the present disclosure;

[0036] Figure 9 is a partial sectional view of a water treatment device in an ice-making process provided by an embodiment of the present disclosure;

[0037] Figure 10 is a schematic diagram of a liquid level in an ice-making box during ice-making provided by an embodiment of the present disclosure;

[0038] Figure 11 is a schematic diagram of a liquid level in an ice-making box during ice-making provided by an embodiment of the present disclosure;

[0039] Figure 12 is a schematic diagram of an internal structure of a water treatment device provided by an embodiment of the present disclosure.

[0040] Figures 1 to 12 The one-to-one correspondence between the names of the components and the reference numerals in the above table is as follows:

[0041] 1, body; 11, ice outlet; 12, water outlet; 13, heat dissipation grid; 14, actuator; 2, ice making box; 20, ice block; 21, rotating shaft; 22, water valve; 23, ice making water outlet; 24, water inlet; 25, overflow; 3, evaporator assembly; 31, evaporating pipe; 32, protruding part; 41, raw water tank; 42, purified water tank; 43, filter assembly; 44, booster pump; 51, compressor; 52, heat dissipation fan; 6, backflow channel; 7, ice basket; 70, water outlet hole; 71, screw rod; 72, baffle; 73, ice containing area; 8, cold water tank; 81, pump. DETAILED DESCRIPTION

[0042] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. Note that the relative arrangement, numerical expressions, and numerical values of components and steps set forth in these embodiments are not limiting to the scope of the present disclosure unless specifically stated otherwise.

[0043] The following description of at least one example embodiment is merely illustrative in nature and is in no way limiting to the scope of the disclosure and its applications or uses.

[0044] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as part of the specification, where appropriate.

[0045] Note that similar reference numerals and letters indicate similar items throughout the drawings, and thus once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0046] In this document, "upper", "lower", "front", "rear", "left", "right", and the like are used to describe relative positions between the relevant parts, and are not intended to limit the absolute positions of the relevant parts.

[0047] In this document, "first", "second", and the like are used to distinguish between the relevant parts from each other, and are not intended to indicate the importance and order, and the premise of each other.

[0048] In this document, "equal", "same", and the like are not strictly limited in the mathematical and / or geometric sense, but also include the errors allowed by those skilled in the art in manufacturing or use.

[0049] Example 1

[0050] The present disclosure provides a water treatment device, in particular, the water treatment device can be a refrigeration and ice making machine, which at least has the functions of refrigeration water and ice making, and further can have other functions such as water purification, normal temperature water supply, hot water supply, etc., so as to meet the more diverse water demand of users.

[0051] Reference Figure 1 And Figure 2 The water treatment device of the present disclosure comprises a body 1, which is the installation base for other components of the water treatment device, and specifically, the body 1 can be a shell, an installation frame or the like structure. In order to facilitate subsequent description, a space rectangular coordinate system is established, the length direction of the body 1 is the X-axis, the longitudinal direction of the body 1 is the Y-axis, and the height direction of the body 1 is the Z-axis, and the X-axis, the Y-axis and the Z-axis are perpendicular to each other. In addition, from the perspective of the user, in the case where the user faces the body 1, the side of the body 1 away from the user is recorded as the front side, and the side close to the user is recorded as the rear side, and the Y-axis is configured to extend along the front-rear direction, and the X-axis is configured to extend along the left-right direction. It can be understood that at this time, the right side is the right hand side of the user, and the left side is the left hand side of the user.

[0052] In one embodiment of the present disclosure, as shown in Figure 1 The ice outlet 11 and the water outlet 12 can be provided on the front side of the body 1, and the water outlet 12 is arranged along the X-axis direction with the ice outlet 11. The user can place a cup under the water outlet 12 to receive water, or place a cup under the ice outlet 11 to receive ice. The water outlet 12 and the ice outlet 11 are independently provided and do not interfere with each other, and are arranged along the X-axis direction. The user can intuitively observe the separately arranged water outlet 12 and ice outlet 11 when facing the body 1, which conforms to the user's usage habits.

[0053] In one embodiment of the present disclosure, as shown in Figure 2 The raw water tank 41 and the pure water tank 42 can be installed on the rear side of the body 1, and the cold water tank 8 and the filter assembly 43 can be installed in the middle region of the body 1. The raw water tank 41 can be used to receive tap water to be filtered, and the raw water tank 41 can be connected to the filter assembly 43, so as to deliver liquid to the filter assembly 43. The filter assembly 43 can filter the liquid from the raw water tank 41 into pure water meeting drinking standards, and the pure water can be delivered to the pure water tank 42 for storage. A booster pump 44 can also be provided below the raw water tank 41, which can provide power source for part of the water circuit in the water treatment device, for example, pumping the liquid in the raw water tank 41 into the filter assembly 43, and pumping the pure water filtered by the filter assembly 43 into the pure water tank 42.

[0054] The cold water tank 8 is provided on the body 1 and is configured to store liquid, and the pure water tank 42 can deliver pure water to the cold water tank 8. The ice making box 2 is rotatably connected to the top of the cold water tank 8 and is configured to have a cavity. The pure water in the cold water tank 8 can flow into the ice making box 2 to generate cold water or ice blocks 20. In addition, in one embodiment of the present disclosure, the cold water generated in the ice making box 2 can also flow back into the cold water tank 8 for temporary storage.Figure 12 A pump 81 is further provided in the water treatment device, and is configured to pump liquid in the cold water tank 8 into the ice making box 2. The pump 81 is capable of pumping liquid in the cold water tank 8 out, for example, the cold water tank 8 can be in communication with the water inlet of the ice making box 2, so that the pump 81 is capable of pumping liquid in the cold water tank 8 into the cavity of the ice making box 2; the cold water tank 8 can also be in communication with the water outlet 12, so that when a user needs to take cold water, the pump 81 is capable of pumping cold water in the cold water tank 8 to the water outlet 12.

[0055] The cavity of the ice making box 2 is provided with an evaporator assembly 3. It can be understood that the evaporator assembly 3 is the main functional component for refrigeration and ice making. In an embodiment of the present disclosure, as shown in Figure 2 The compressor 51 and the heat dissipation fan 52 are further provided below the raw water tank 41 and the pure water tank 42 and are connected to the evaporator assembly 3. The compressor 51 is capable of lifting the refrigerant from low pressure to high pressure, and the evaporator assembly 3 is capable of converting the high-temperature and high-pressure refrigerant into a low-temperature and low-pressure state, so as to freeze the liquid in the ice making box 2 into ice blocks 20. The heat dissipation fan 52 is capable of discharging the heat generated during the ice making process to the environment with a higher temperature. Figure 1 As shown in

[0056] Referring to Figure 3 and Figure 4 , the evaporator assembly 3 comprises an evaporator tube 31 and at least one protruding portion 32 extending downward from the evaporator tube 31. The evaporator tube 31 can be consistent with the extension direction of the ice making box 2 (i.e., both extend along the X-axis direction). The evaporator tube 31 and the protruding portion 32 are in communication with each other, and the inside is provided with a refrigerant medium. The protruding portion 32 is used to form the ice blocks 20. In order to improve the number of ice blocks 20 made at a time, as many protruding portions 32 as possible can be provided on the evaporator tube 31. When ice making is performed, the liquid level in the ice making box 2 needs to at least exceed the bottom of the protruding portion 32, that is, at least cover part of the protruding portion 32, so as to form the ice blocks 20 around each protruding portion 32. The evaporator assembly 3 is also used for refrigerating water. By controlling the time for which the liquid stays in the ice making box 2, the liquid can be cooled while ensuring that the liquid does not drop to the freezing point, thereby forming cold water.

[0057] As shown in Figure 10 , the pump 81 is configured to pump liquid covering part of the protruding portion 32 into the cavity of the ice making box 2 through the cold water tank 8 during ice making. The protruding portion 32 is capable of freezing the liquid around it to form the ice blocks 20, thereby realizing the ice making function. As shown in Figure 11As shown, the pump 81 is also configured to pump the liquid covering at least part of the evaporation pipe 31 into the cavity of the ice-making box 2 from the cold water tank 8 when making cold water, so as to utilize the cold energy of the evaporation pipe 31, reduce the waste of cold energy, and improve the cooling efficiency. Figure 10 As shown, the pump 81 is also configured to pump the liquid covering at least part of the evaporation pipe 31 into the cavity of the ice-making box 2 from the cold water tank 8 when making cold water, so as to utilize the cold energy of the evaporation pipe 31, reduce the waste of cold energy, and improve the cooling efficiency. Figure 11 As shown, the pump 81 is also configured to pump the liquid covering at least part of the evaporation pipe 31 into the cavity of the ice-making box 2 from the cold water tank 8 when making cold water, so as to utilize the cold energy of the evaporation pipe 31, reduce the waste of cold energy, and improve the cooling efficiency.

[0058] In an embodiment of the present disclosure, a water outlet assembly is arranged on the ice-making box 2 and is in communication with the cavity of the ice-making box 2. The water outlet assembly is configured to be opened when making ice or cold water, so as to circulate the liquid in the cavity of the ice-making box 2 back to the cold water tank 8 when making ice or cold water; or be closed when making ice or cold water, so as to enable the evaporator assembly 3 to cool the liquid standing in the cavity. Specifically, when the water outlet assembly is closed, the ice-making box 2 is in a “no-out but only-in” state, the liquid in the cavity remains stationary, and the user can quickly obtain cold water or ice cubes 20. When the water outlet assembly is opened, at least part of the liquid in the ice-making box 2 can flow back to the cold water tank 8, and the liquid in the cavity is in a flowing state. The circulating liquid can continuously bring cold energy back to the cold water tank 8, so that the temperature of the entire cold water tank 8 is reduced.

[0059] It should be noted that the water outlet assembly of the present disclosure is not a specific structure on the ice-making box 2, but a general term for a structure arranged on the ice-making box 2 and capable of causing the liquid in the cavity to flow into the cold water tank 8 when opened. In the following, several specific water outlet assembly structures provided by the present disclosure and their states when making ice and cooling will be introduced respectively.

[0060] In an embodiment of the present disclosure, referring to Figure 3 and Figure 10 , the water outlet assembly includes an ice-making water outlet 23 in communication with the cavity of the ice-making box 2. The ice-making water outlet 23 is configured to be arranged on the side wall of the ice-making box 2 at a position corresponding to the protruding part 32. When making ice, the liquid higher than the ice-making water outlet 23 is configured to flow back to the cold water tank 8 through the ice-making water outlet 23. Specifically, the ice-making water outlet 23 can be kept in an open state when making ice. The pump 81 can pump the liquid in the cold water tank 8 into the ice-making box 2 and store water in the ice-making box 2. When the water level rises to the ice-making water outlet 23, the liquid will overflow from the ice-making water outlet 23 and flow back to the cold water tank 8. The ice-making water outlet 23 defines the highest water level line (i.e. the dashed line shown in Figure 10 ) when making ice. The liquid can cover part of the protruding part 32, so as to freeze the protruding part 32 to form ice cubes 20.

[0061] Further, with reference to Figure 3 And Figure 10 The water outlet assembly further comprises a water inlet 24 in communication with the cavity of the ice making box 2, the water inlet 24 is configured to be lower than the ice making water outlet 23 and is arranged on the ice making box 2 adjacent to the bottom thereof; during ice making, the water inlet 24 is configured to be in a closed state. The water inlet 24 can be arranged on the same side wall of the ice making box 2 as the ice making water outlet 23, and is located adjacent to the bottom of the side wall. When the water inlet 24 is opened, the liquid in the ice making box 2 can be substantially emptied. The water inlet 24 can remain closed during ice making, thereby facilitating rapid water accumulation in the ice making box 2, and the liquid in the ice making box 2 can remain in a substantially static state, thereby facilitating rapid ice making.

[0062] In one specific embodiment of the present disclosure, a water valve 22 is movably arranged at the water inlet 24 and / or the ice making water outlet 23, and the water valve 22 can be movably arranged on the ice making box 2; an actuator 14 is arranged on the machine body 1, and the actuator 14 is configured to control the movement of the water valve 22 between the closed position and the open position. The water valve 22 can be arranged only at the water inlet 24, only at the ice making water outlet 23, or one water valve 22 can be arranged at the water inlet 24 and the ice making water outlet 23 respectively. The actuator 14 can be used to control the opening and closing of a single water valve 22, and in the embodiment where two water valves 22 are arranged, two actuators 14 can be correspondingly arranged.

[0063] Referring to Figure 7 For example, when the water valve 22 is arranged only at the water inlet 24, the water valve 22 can be kept in the closed position under the pre-pressing action of the elastic device in the natural state, at which time the water valve 22 can seal the water inlet 24. The actuator 14 can be a rudder, which can push the water valve 22 to move to the open position during operation, thereby opening the water inlet 24. The water valve 22 arranged at the ice making water outlet 23 and its corresponding actuator 14 are not shown in the drawings of the present disclosure, but those skilled in the art can understand that the structure of the water valve 22 arranged at the ice making water outlet 23 and its movement mode can be completely consistent with the water valve 22 arranged at the water inlet 24.

[0064] Referring to Figure 11 During chilled water making, the water inlet 24 and the ice making water outlet 23 are configured to be in an open state, and the pump 81 is configured to pump the liquid in the chilled water tank 8 into the cavity of the ice making box 2, and make the liquid in the cavity circulate back to the chilled water tank 8 through the water inlet 24 and the ice making water outlet 23; or during chilled water making, the water inlet 24 is configured to be in an open state, and the ice making water outlet 23 is configured to be in a closed state, and the pump 81 is configured to pump the liquid in the chilled water tank 8 into the cavity of the ice making box 2, and make the liquid in the cavity circulate back to the chilled water tank 8 through the water inlet 24.

[0065] In the embodiment, the water inlet 24 and the ice-making water outlet 23 can be kept open during the cooling water process, or the ice-making water outlet 23 can be closed and the water inlet 24 can be open. During the cooling water process, the pump 81 needs to pump water at a large power, so that the water inlet speed of the ice-making box 2 is at least faster than the water outlet speed of the water inlet 24, so that the water level in the ice-making box 2 can still be accumulated to cover at least part of the evaporative pipe 31 in the open state of the water inlet 24, so as to fully utilize the cold energy of the evaporative assembly 3 during operation and improve the cooling water speed.

[0066] In one embodiment of the present disclosure, referring to Figure 3 and Figure 11 The ice-making box 2 is provided with an overflow port 25 communicating with the cavity, the overflow port 25 is configured to be higher than the ice-making water outlet 23, and the evaporative pipe 31 is configured to be at least partially lower than the overflow port 25. The liquid higher than the overflow port 25 is configured to flow into the cold water tank 8 through the overflow port 25. Specifically, the overflow port 25 can be a notch provided on the top end face of the ice-making box 2. When the liquid overflows from the overflow port 25, it means that the volume of the ice-making box 2 has reached the upper limit. To avoid the liquid overflowing from the top four edges of the ice-making box 2, the present disclosure opens the overflow port 25 on the top end face of the ice-making box 2, so as to guide the overflowing liquid to the cold water tank 8 for recycling when the cavity is full. The overflow port 25 is higher than at least part of the evaporative pipe 31, so as to ensure that the liquid level in the ice-making box 2 covers at least part of the evaporative pipe 31 during the cooling water process, so as to effectively utilize the cold energy of the evaporative pipe 31 and improve the cooling water efficiency, and avoid waste of cold energy.

[0067] In one specific embodiment of the present disclosure, the overflow port 25, the ice-making water outlet 23 and the water inlet 24 can be arranged on the same side wall of the ice-making box 2, so that the ice-making box 2 only discharges water from one side, and the space at the bottom of the ice-making box 2 in the machine body 1 is conveniently arranged and optimized. The liquid discharged from the overflow port 25, the ice-making water outlet 23 and the water inlet 24 all flows to the cold water tank 8, so that a common passage for the three ports can be arranged below the side of the ice-making box 2, so as to simplify the structure and layout of the machine body 1.

[0068] In one embodiment of the present disclosure, as Figure 5As shown, the ice maker 2 is rotatably connected to the cold water tank 8 via a pivot 21 and is configured to rotate relative to the cold water tank 8 between a first position and a second position. In the first position, the water valve 22 is positioned corresponding to the actuator 14, which controls the movement of the water valve 22 to open or close the drain outlet 24. At this time, the opening of the ice maker 2 faces upwards to collect liquid, thus making ice or cooling water. In the second position, the water valve 22 is disengaged from the actuator 14. After ice making is complete, multiple ice blocks 20 are frozen on the multiple protrusions 32. The ice maker 2 can rotate from the first position to the second position, and the ice blocks 20 on the protrusions 32 lose their support and fall downwards through the opening of the ice maker 2.

[0069] In one embodiment of this disclosure, reference is made to Figures 5 to 6 An ice basket 7 is installed in the cold water tank 8 at a position lower than the ice maker 2. When the ice maker 2 rotates to the second position, the ice cubes in the ice maker 2 fall into the ice basket 7 for temporary storage. A screw 71 connected to the ice dispensing port 11 is also installed in the ice basket 7. The screw 71 is configured to rotate relative to the ice basket 7 under the action of external force to transport the ice cubes 20 in the ice basket 7 to the ice dispensing port 11.

[0070] like Figure 5 As shown, from the XZ plane perspective, the bottom surface of the ice basket 7 can be constructed as a ramp, and the lowest point of this ramp corresponds to the location of the screw 71. This allows any ice block 20 dropped from the homemade ice box 2 into the ice basket 7 to naturally slide towards the corresponding position of the screw 71 under the influence of gravity. Figure 6 As shown, from a YZ plane perspective, the screw 71 extends obliquely upwards to connect with the ice-collecting port 11. Ice blocks 20 at the corresponding position of the screw 71 can naturally accumulate away from the ice-collecting port 11 under gravity. The helical gap of the screw 71 can be adapted to the size of the ice blocks 20. During the rotation of the screw 71, the ice blocks 20 can be stuck in its helical gap, thus being transported by the screw 71 to the ice-collecting port 11, whereby ice blocks are dispensed one by one.

[0071] In one embodiment of this disclosure, reference is made to Figure 6 The ice basket 7 has a water outlet 70, and the liquid in the ice basket 7 is configured to flow into the cold water tank 8 through the water outlet 70. It is understood that the ice blocks 20 temporarily stored in the ice basket 7 will gradually melt, therefore some liquid may remain in the ice basket 7. For example... Figure 6 As shown, multiple water outlets 70 can be provided on the ice basket 7, and the liquid in the ice basket 7 can flow out of the ice basket 7 through the water outlets 70 and flow into the cold water tank 8 below for temporary storage.

[0072] In one embodiment of this disclosure, reference is made to Figures 7 to 9During ice making, the actuator 14 controls the water valve 22 to remain in the sealed position; after ice making is completed and before the ice box 2 rotates to the second position, the actuator 14 controls the water valve 22 to move to the open position, and the liquid in the ice box 2 is configured to flow into the cold water tank 8 through the drain outlet 24. Figures 7 to 9 The ice-making process of the water treatment apparatus of this disclosure is shown. At the start of ice-making, as... Figure 7 As shown, the ice container 2 is in the first position with its opening facing upwards to receive liquid. The water valve 22 is kept in the sealed position, thereby closing the drain outlet 24. The pump 81 pumps liquid covering the protruding part 32 into the cavity of the ice container 2 via the cold water tank 8. Figure 8 As shown, the protrusion 32 can freeze the surrounding liquid to form ice cubes 20, thereby realizing the ice-making function. At this time, in addition to the ice cubes 20, there is still some unfrozen cold water remaining in the cavity. To prevent the cold water and ice cubes 20 from falling into the ice basket 7 together, causing the ice cubes 20 temporarily stored in the ice basket 7 to melt faster, the drain outlet 24 needs to be opened before the ice-making box 2 rotates to the second position. The actuator 14 controls the water valve 22 to move to the open position, and the liquid in the ice-making box 2 is configured to flow into the cold water tank 8 through the drain outlet 24. Figure 9 As shown, the ice container 2 rotates to the second position, and the ice cubes 20 in the ice container 2 fall into the ice basket 7 for temporary storage.

[0073] In one embodiment of this disclosure, such as Figure 8 As shown, the ice basket 7 has an ice-holding area 73. A baffle 72 extending vertically is provided on the side of the ice basket 7 adjacent to the water outlet assembly. The baffle 72 is configured to enclose the inner wall of the cold water tank 8, forming a return channel 6 separated from the ice-holding area 73. Liquid flowing out of the water outlet assembly is configured to flow into the cold water tank 8 via the return channel 6. This disclosure provides a baffle 72 between the return channel 6 and the ice-holding area 73, thereby preventing liquid flowing from the drain outlet 24 and / or the ice-making outlet 23 and / or the overflow outlet 25 from splashing onto the ice block 20, thus avoiding accelerated melting of the ice block 20.

[0074] This disclosure also provides a control method for a water treatment device, applied to the aforementioned water treatment device, the method comprising:

[0075] The ice-making method includes controlling a pump 81 to pump liquid covering a protrusion 32 into the cavity of an ice-making container 2 via a cold water tank 8, and controlling an evaporator assembly 3 to cool the liquid in the cavity during operation to form ice on the protrusion 32. In one embodiment of this disclosure, the ice-making method further includes: controlling an actuator 14 to move to keep the water valve 22 of the drain outlet 24 in a blocked position based on an ice-making signal, and controlling the pump 81 to stop after operating for a predetermined time.

[0076] The method for cooling water includes controlling the pump 81 to pump the liquid in the cold water tank 8 into the cavity of the ice-making box 2 to cover at least part of the evaporation pipe 31, and controlling the evaporator assembly 3 to cool the liquid in the cavity in the working state. In an embodiment of the present disclosure, the method for cooling water further includes: based on the cooling water signal, controlling the actuator 14 to move to keep the water valve 22 in the open position, and controlling the pump 81 to continuously pump the liquid in the cold water tank 8 into the cavity of the ice-making box 2, and the liquid in the cavity is configured to flow back to the cold water tank 8 through the water outlet 24 at least to circulate the liquid in the cold water tank 8 and the ice-making box 2.

[0077] The specific steps of the above ice-making method and the method for cooling water have been described in detail when the functions of the structures in the water treatment device are introduced, and will not be repeated here. It should be noted that based on the ice-making signal, the pump 81 can be configured to work at a first power; based on the cooling water signal, the pump 81 can be configured to work at a second power, wherein the first power is less than the second power. When making ice, the water outlet 24 is in the closed state, and the water flow in the cavity should not be too violent, so the speed of the pump 81 pumping water into the ice-making box 2 should be relatively slow; while cooling water, the water outlet 24 is in the open state, so the pump 81 needs to pump water at a larger power, so that the water inlet speed of the ice-making box 2 is at least faster than the water outlet speed of the water outlet 24, so that the ice-making box 2 can still accumulate liquid level to cover at least part of the evaporation pipe 31 under the condition that the water outlet 24 is open, so as to fully utilize the cold energy of the evaporator assembly 3 in working state, and improve the cooling water speed.

[0078] Embodiment two

[0079] The present disclosure is similar to embodiment one, and also provides a water treatment device and a control method thereof. The basic structure of the water treatment device is completely consistent with the water treatment device provided in embodiment one, and will not be repeated here. The main difference between the present embodiment and embodiment one is that the different water levels of the water treatment device in ice-making and cooling water are controlled by controlling the switch of the water outlet assembly and the flow of the pump 81, wherein the pump 81 in the present embodiment is configured to work at a constant flow.

[0080] When making ice, the ice-making water outlet 23 is in the open state, the water outlet 24 is configured to be in the closed state, and the liquid higher than the ice-making water outlet 23 is configured to circulate back to the cold water tank 8, so that the liquid level in the ice-making box 2 is leveled with the ice-making water outlet 23. Further, the pump 81 is configured to stop pumping a predetermined amount of liquid into the ice-making box 2 when making ice; or the pump 81 is configured to continuously pump liquid into the ice-making box 2 when making ice, and the flow of the pump 81 is less than or equal to the maximum water outlet flow of the ice-making water outlet 23.

[0081] Specifically, the pump 81 can pump a predetermined amount of liquid into the ice-making box 2 at the beginning of ice making. Since the water inlet 24 is in a closed state at this time, the liquid level in the ice-making box 2 can rise to cover at least part of the protruding portion 32. Since the ice-making water outlet 23 is in an open state, the liquid higher than the ice-making water outlet 23 can also be circulated back to the cold water tank 8 through the ice-making water outlet 23, so the predetermined amount can be set slightly larger, so as to ensure that the liquid level in the ice-making box 2 can be leveled with the ice-making water outlet 23, that is, to cover at least part of the protruding portion 32. After pumping the predetermined amount of liquid, the pump 81 can stop, and the liquid level in the ice-making box 2 can be normally maintained until the ice making is completed.

[0082] In another embodiment, the flow rate of the pump 81 is less than or equal to the maximum water flow rate of the ice-making water outlet 23, so that liquid can be continuously pumped into the ice-making box 2 during ice making, and the liquid level in the ice-making box 2 can be well maintained through the ice-making water outlet 23. In this way, the liquid in the ice-making box 2 can be kept circulating during ice making. It should be noted that in the conventional scenario of static water ice making, the water around the protruding portion 32 will freeze quickly to form an ice shell around the surface of the protruding portion 32. Since the thermal conductivity of ice is much lower than that of liquid water, this ice shell will act as a "thermal insulation layer" to hinder the subsequent heat transfer from the liquid to the protruding portion 32, resulting in a slow decrease in water temperature in the ice-making box and a low ice-making speed. The present embodiment controls the flow rate of the pump 81 and sets the ice-making water outlet 23, so as to keep the liquid in the ice-making box 2 flowing during ice making, thereby avoiding local supercooling, improving ice-making efficiency, ensuring uniformity of ice making, and optimizing temperature distribution in the ice-making box 2.

[0083] When the cold water is being made, the water inlet 24 and the ice-making water outlet 23 are configured to be in a closed state, so as to facilitate the ice-making box 2 to quickly store water; the pump 81 is configured to continuously pump liquid into the ice-making box 2, and the liquid higher than the overflow port 25 is configured to be circulated back to the cold water tank 8, so that the liquid level in the ice-making box 2 is leveled with the overflow port 25. The overflow port 25 is higher than at least part of the evaporation pipe 31, so as to ensure that the liquid level in the ice-making box 2 covers at least part of the evaporation pipe 31 when the cold water is being made, thereby effectively utilizing the cold energy of the evaporation pipe 31 and improving the efficiency of the cold water making. When the liquid overflows from the overflow port 25, it means that the volume of the ice-making box 2 has reached the upper limit. In order to avoid the liquid overflowing from the top edge of the ice-making box 2, the present disclosure opens the overflow port 25 on the top end face of the ice-making box 2, so as to play a guiding role when the volume of the ice-making box 2 is full, and guide the overflowing liquid to the cold water tank 8 for circulation and utilization.

[0084] Correspondingly, the present disclosure also provides a control method of the water treatment equipment, the pump 81 is configured to work at a constant flow rate, and the control method comprises:

[0085] The ice-making method includes: based on the ice-making signal, controlling the actuator 14 to move to keep the water valve 22 of the water inlet 24 in the closed position, keep the water valve 22 of the ice outlet 23 in the open position, and control the pump 81 to work for a predetermined time and then stop, or control the pump 81 to continuously pump the liquid in the cold water tank 8 into the cavity of the ice-making box 2, and the liquid in the cavity is configured to flow back to the cold water tank 8 through the ice outlet 23, wherein the flow of the pump 81 is less than or equal to the maximum water flow of the ice outlet 23.

[0086] The ice-making method includes: based on the ice-making signal, controlling the actuator 14 to move to keep the water valve 22 of the water inlet 24 in the closed position, keep the water valve 22 of the ice outlet 23 in the open position, and control the pump 81 to work for a predetermined time and then stop, or control the pump 81 to continuously pump the liquid in the cold water tank 8 into the cavity of the ice-making box 2, and the liquid in the cavity is configured to flow back to the cold water tank 8 through the ice outlet 23, wherein the flow of the pump 81 is less than or equal to the maximum water flow of the ice outlet 23.

[0087] The specific steps of the ice-making method and the ice-making method have been described in detail in the foregoing description of the structures and functions of the water treatment equipment, and will not be repeated here.

[0088] Embodiment Three

[0089] The present disclosure is similar to Embodiment Two, and also provides a water treatment equipment and a control method thereof, and the basic structure of the water treatment equipment is basically the same as that provided in Embodiments One and Two, and the only structural difference is that the ice outlet 23 is not provided on the ice-making box 2 of the present embodiment, or it can also be understood that the ice outlet 23 is kept in a closed state.

[0090] The present embodiment also controls the water level of the water treatment equipment during ice-making and ice-making by controlling the switch of the water outlet assembly and the flow of the pump 81, wherein the pump 81 in the present embodiment is configured to work at a first flow rate or a second flow rate, wherein the first flow rate is less than the second flow rate.

[0091] During ice-making, the pump 81 is configured to switch to continuously pump liquid at the first flow rate after pumping a predetermined amount of liquid into the ice-making box 2 at the second flow rate, and the water inlet 24 is configured to be in an open state, and the water flow of the water inlet 24 is equal to the first flow rate, so as to keep the liquid level in the ice-making box 2 at a height covering at least part of the protruding portion 32. The water inlet 24 can be kept open during ice-making, so as to keep the liquid in the ice-making box 2 flowing during the ice-making process, thereby avoiding local supercooling, improving the ice-making efficiency, ensuring the uniformity of ice formation, and optimizing the temperature distribution in the ice-making box 2.

[0092] Specifically, at the beginning of ice making, a predetermined amount of liquid is first pumped into the ice making box 2 at a larger second flow rate, so that the liquid level in the ice making box 2 rises to a position (i.e., a height covering at least part of the protruding portion 32) meeting the ice making requirement; then the flow rate of the pump 81 can be controlled to decrease to the first flow rate, which is substantially the same as the outflow rate of the water outlet 24, so that the liquid level in the ice making box 2 can be kept substantially unchanged until the end of ice making.

[0093] During chilled water making, the water outlet 24 is configured to be in an open state, the pump 81 is configured to continuously pump liquid into the ice making box 2 at the second flow rate, and the liquid in the ice making box 2 is configured to flow into the chilled water tank 8 through the water outlet 24 and the overflow 25, so that the liquid level in the ice making box 2 is leveled with the overflow 25. As mentioned above, the first flow rate is substantially the same as the outflow rate of the water outlet 24, and the second flow rate is greater than the first flow rate, so the second flow rate must be greater than the outflow rate of the water outlet 24. During chilled water making, the pump 81 continuously pumps liquid into the ice making box 2 at the second flow rate, so that the liquid level in the ice making box 2 gradually rises, and when it rises to the position of the overflow 25, the excess liquid can overflow from the overflow 25, and the liquid level in the ice making box 2 can be kept at a position leveled with the overflow 25, i.e., a position covering at least part of the evaporation pipe 31.

[0094] Correspondingly, the present disclosure also provides a control method of the water treatment device, the pump 81 is configured to work at a first flow rate or a second flow rate, wherein the first flow rate is less than the second flow rate, and the control method comprises:

[0095] The ice making method: based on the ice making signal, the actuator 14 is controlled to move to keep the water outlet 24 in the open position, and the pump 81 is controlled to work at the second flow rate for a predetermined time, and then switched to continuously pump the liquid in the chilled water tank 8 into the cavity of the ice making box 2 at the first flow rate, and the liquid in the cavity is configured to flow back to the chilled water tank 8 through the water outlet 24, wherein the outflow rate of the water outlet 24 is substantially the same as the first flow rate;

[0096] The chilled water making method: based on the chilled water making signal, the actuator 14 is controlled to move to keep the water valve 22 of the water outlet 24 in the open position, and the pump 81 is controlled to continuously pump the liquid in the chilled water tank 8 into the cavity of the ice making box 2 at the second flow rate, and the liquid in the cavity is configured to flow back to the chilled water tank 8 through the water outlet 24 and the overflow 25.

[0097] The specific steps of the above ice making method and chilled water making method have been described in detail in the foregoing introduction of the structures and functions of the water treatment device, and will not be repeated here.

[0098] Application scenario one

[0099] In a household scenario, the water treatment device can be an ice-making refrigerator. When ice is needed, the control unit of the ice-making refrigerator controls the actuator 14 to move the water valve 22 of the water inlet 24 to the closed position based on an ice-making signal, so as to close the water inlet 24. At this time, the ice-making box 2 is located at the first position, and the opening thereof faces upward to receive liquid.

[0100] The control unit controls the pump 81 to pump liquid covering the protrusions 32 into the cavity of the ice-making box 2 from the cold water tank 8, and controls the evaporator assembly 3 to cool the liquid in the cavity in the working state, so as to form ice blocks on the protrusions 32, and controls the pump 81 to stop working after a predetermined time.

[0101] During the working of the pump 81, the ice-making water outlet 23 is kept in the open state during ice making, and the liquid pumped into the ice-making box 2 from the cold water tank 8 will overflow from the ice-making water outlet 23 and flow back to the cold water tank 8 when the liquid level reaches the ice-making water outlet 23.

[0102] After the ice making is completed, a plurality of ice blocks 20 are frozen on the plurality of protrusions 32, and at this time, there is residual cold water in the cavity in addition to the ice blocks 20. To avoid the cold water from falling into the ice basket 7 together with the ice blocks 20, causing the ice blocks 20 temporarily stored in the ice basket 7 to melt rapidly, the water inlet 24 needs to be opened before the ice-making box 2 is rotated to the second position. The actuator 14 controls the water valve 22 to move to the open position, and the liquid in the ice-making box 2 is configured to flow into the cold water tank 8 through the water inlet 24.

[0103] After the water is drained, the ice-making box 2 is rotated from the first position to the second position, and the ice blocks 20 on the protrusions 32 lose the support of the ice-making box 2, and the ice blocks 20 can fall downward through the opening of the ice-making box 2 and be temporarily stored in the ice basket 7.

[0104] Application scenario two

[0105] In a household scenario, the water treatment device can be an ice-making refrigerator. When ice is needed, the control unit of the ice-making refrigerator controls the actuator 14 to move the water valve 22 of the water inlet 24 to the closed position based on an ice-making signal, so as to close the water inlet 24. At this time, the ice-making box 2 is located at the first position, and the opening thereof faces upward to receive liquid.

[0106] The control unit controls the pump 81 to pump liquid covering the protrusions 32 into the cavity of the ice-making box 2 from the cold water tank 8, and controls the evaporator assembly 3 to cool the liquid in the cavity in the working state, so as to form ice blocks on the protrusions 32, and controls the pump 81 to stop working after a predetermined time.

[0107] In the case of large water flow, the liquid in the ice-making box 2 will flow out from the water inlet 24 and the ice-making water outlet 23 at the same time, and even possibly from the overflow 25, but since the water inlet speed of the ice-making box 2 is at least faster than the water outlet speed of the water inlet 24, the liquid level in the ice-making box 2 can still be accumulated to cover at least part of the evaporation pipe 31, so as to fully utilize the cold energy during the working of the evaporator assembly 3 and improve the speed of the chilled water.

[0108] In the process of producing chilled water, the liquid in the cavity is in a flowing state, thereby preventing local ice formation, and the circulating liquid can continuously bring cold energy back to the chilled water tank 8, so that the temperature of the entire chilled water tank 8 is reduced.

[0109] Application scenario three

[0110] In a household scenario, the water treatment device can be an ice-making refrigerator, and the pump 81 is configured to work at a constant flow. When ice is needed, the control unit of the ice-making refrigerator controls the actuator 14 to move to keep the water valve 22 of the water inlet 24 in the blocking position and the water valve 22 of the ice-making water outlet 23 in the open position, so as to close the water inlet 24 and open the ice-making water outlet 23. At this time, the ice-making box 2 is in the first position, and its opening is upward to receive liquid.

[0111] The control unit can control the pump 81 to continuously pump liquid from the chilled water tank 8 into the cavity of the ice-making box 2, so as to reach a liquid level height covering part of the protruding part 32 (i.e., the height level with the ice-making water outlet 23), and control the evaporator assembly 3 to cool the liquid in the cavity in the working state, so as to form ice blocks on the protruding part 32. The flow of the pump 81 is less than or equal to the maximum water outlet flow of the ice-making water outlet 23, and during the working of the pump 81, when the liquid level pumped from the chilled water tank 8 into the ice-making box 2 rises to the ice-making water outlet 23, the liquid will overflow from the ice-making water outlet 23 and flow back to the chilled water tank 8.

[0112] When chilled water is needed, the control unit of the ice-making refrigerator controls the actuator 14 to move to keep the water valves 22 of the ice-making water outlet 23 and the water inlet 24 in the blocking position, so as to close the water inlet 24 and the ice-making water outlet 23. At this time, the ice-making box 2 is in the first position, and its opening is upward to receive liquid.

[0113] The pump 81 is controlled to pump liquid covering at least part of the evaporation pipe 31 from the chilled water tank 8 into the cavity of the ice-making box 2, and the evaporator assembly 3 is controlled to cool the liquid in the cavity in the working state. Specifically, the pump 81 continuously pumps the liquid in the chilled water tank 8 into the cavity of the ice-making box 2, and the liquid in the cavity is configured to flow back to the chilled water tank 8 through the overflow 25, so as to circulate the liquid in the chilled water tank 8 and the ice-making box 2.

[0114] Application scenario four

[0115] In the household scenario, the water treatment device can be an ice-making refrigerator, the pump 81 of which is configured to work at a first flow rate or a second flow rate, wherein the first flow rate is less than the second flow rate. When ice making is needed, the control unit of the ice-making refrigerator controls the actuator 14 to move to keep the water valve 22 of the drop inlet 24 in the open position based on an ice-making signal, so as to open the drop inlet 24 and open the ice-making water outlet 23. At this time, the ice-making box 2 is located at the first position, and the opening thereof faces upward to receive liquid.

[0116] The control unit can control the pump 81 to work at the second flow rate through the cold water tank 8 for a predetermined time, so that the liquid level reaches the liquid level height covering part of the protruding part 32, and then control the pump 81 to continuously pump liquid into the cavity of the ice-making box 2 at the first flow rate, and the liquid in the cavity continuously flows back to the cold water tank 8 through the drop inlet 24, wherein the water outlet flow rate of the drop inlet 24 is equal to the first flow rate, so that the liquid level height suitable for ice making is maintained during the continuous flow of liquid in the ice-making box 2. At the same time, the evaporator assembly 3 is controlled to be in a working state to cool the liquid in the cavity to form ice blocks on the protruding part 32.

[0117] When chilled water is needed, the control unit of the ice-making refrigerator controls the actuator 14 to move to keep the water valve 22 of the drop inlet 24 in the open position based on a chilled water signal, so as to open the drop inlet 24. At this time, the ice-making box 2 is located at the first position, and the opening thereof faces upward to receive liquid.

[0118] The pump 81 is controlled to pump liquid covering at least part of the evaporating pipe 31 into the cavity of the ice-making box 2 through the cold water tank 8 at the second flow rate, and the evaporator assembly 3 is controlled to be in a working state to cool the liquid in the cavity. Specifically, the pump 81 continuously pumps the liquid in the cold water tank 8 into the cavity of the ice-making box 2, and the liquid in the cavity is configured to flow back to the cold water tank 8 through the drop inlet 24 and the overflow outlet 25, so as to circulate the liquid in the cold water tank 8 and the ice-making box 2.

[0119] The second flow rate is greater than the water outlet flow rate of the drop inlet 24, and when chilled water is needed, the pump 81 continuously pumps liquid into the ice-making box 2 at the second flow rate, so that the liquid level in the ice-making box 2 gradually rises, and when it rises to the position of the overflow outlet 25, the excess liquid can overflow from the overflow outlet 25, and the liquid level in the ice-making box 2 can be kept at a position level with the overflow outlet 25, so as to realize chilled water.

[0120] Having described above several embodiments of the disclosure, any modifications and variations that fall within the scope of the described embodiments are also contemplated by the inventor(s). As such, the foregoing description is not intended to limit the scope of the disclosure, and it is recognized that modifications are contemplated which can provide one or more benefits and which are within the scope of the disclosure. The disclosure is defined by the appended claims.

Claims

1. A water treatment apparatus, characterized by, Comprise: a machine body (1); a cold water tank (8) disposed on the machine body (1) and configured to store liquid; an ice making box (2) rotatably connected to the cold water tank (8) and configured to have a cavity; an evaporator assembly (3) configured to be located in the ice making box (2); the evaporator assembly (3) comprises an evaporator tube (31) and at least one protrusion (32) extending downward from the evaporator tube (31); a pump (81) for pumping liquid in the cold water tank (8) into the ice making box (2); an ice outlet assembly is provided on the ice making box (2), which comprises an overflow port (25) in communication with the cavity of the ice making box (2), and the overflow port (25) is configured to be lower than at least part of the evaporator tube (31); when making ice, the liquid higher than the overflow port (25) is configured to circulate back to the cold water tank (8), so that the liquid in the ice making box (2) covers at least part of the evaporator tube (31).

2. The water treatment apparatus of claim 1, wherein The pump (81) is configured to work at a constant flow rate; the ice outlet assembly comprises an ice outlet port (23) in communication with the cavity of the ice making box (2), and the ice outlet port (23) is configured to be arranged on the side wall of the ice making box (2) at a position corresponding to the protrusion (32); When making ice, the ice outlet port (23) is in an open state, and the liquid higher than the ice outlet port (23) is configured to circulate back to the cold water tank (8), so that the liquid level in the ice making box (2) is level with the ice outlet port (23).

3. The water treatment apparatus of claim 2, wherein, The ice outlet assembly comprises a water inlet port (24) in communication with the cavity of the ice making box (2), and the water inlet port (24) is configured to be lower than the ice outlet port (23) and arranged on the ice making box (2) adjacent to the bottom thereof; when making ice, the water inlet port (24) is configured to be in a closed state.

4. The water treatment apparatus of claim 3, wherein The pump (81) is configured to stop working after pumping a predetermined amount of liquid into the ice making box (2) when making ice; or the pump (81) is configured to continuously pump liquid into the ice making box (2) when making ice, and the flow rate of the pump (81) is less than or equal to the maximum ice outlet flow rate of the ice outlet port (23).

5. The water treatment device of claim 3, wherein, The overflow port (25) is configured to be higher than the ice outlet port (23); when making ice water, the water inlet port (24) and the ice outlet port (23) are configured to be in a closed state, the pump (81) is configured to continuously pump liquid into the ice making box (2), and the liquid higher than the overflow port (25) is configured to circulate back to the cold water tank (8), so that the liquid level in the ice making box (2) is level with the overflow port (25).

6. The water treatment apparatus of claim 5, wherein, The overflow port (25) is a notch arranged on the top end face of the ice making box (2).

7. The water treatment device of claim 3, wherein, A water valve (22) is movably arranged at the water inlet (24) and / or the ice making water outlet (23); an actuator (14) is arranged on the machine body (1) and configured to control the corresponding water valve (22) to move between a closed position and an open position.

8. The water treatment apparatus of claim 7, wherein, The ice making box (2) is configured to rotate relative to the cold water tank (8) between a first position and a second position; when in the first position, the opening of the ice making box (2) faces upward to receive liquid, and the water valve (22) is in a position corresponding to the corresponding actuator (14); when in the second position, the water valve (22) is disengaged from the actuator (14).

9. The water treatment device of claim 8, wherein, During ice making, the water valve (22) corresponding to the water inlet (24) is kept in the closed position; after ice making is completed and before the ice making box (2) is rotated to the second position, the actuator (14) controls the water valve (22) corresponding to the water inlet (24) to move to the open position, and the liquid in the ice making box (2) is configured to flow into the cold water tank (8) through the water inlet (24).

10. The water treatment device of claim 1, wherein, The pump (81) is configured to operate at a first flow rate or a second flow rate, wherein the first flow rate is less than the second flow rate; the water outlet assembly includes a water inlet (24) that communicates with the ice making box (2) cavity, and the water inlet (24) is arranged on the ice making box (2) adjacent to the bottom thereof; During ice making, the pump (81) is configured to switch to the first flow rate after pumping a predetermined amount of liquid into the ice making box (2) at the second flow rate, and the water inlet (24) is configured to be in an open state, and the water flow rate of the water inlet (24) is equal to the first flow rate, so that the liquid level in the ice making box (2) is maintained at a height covering at least part of the protrusion (32).

11. The water treatment device of claim 10, wherein, The overflow port (25) is a notch arranged on the top end face of the ice making box (2); during chilled water production, the water inlet (24) is configured to be in an open state, the pump (81) is configured to continuously pump liquid into the ice making box (2) at the second flow rate, and the liquid in the ice making box (2) is configured to flow into the cold water tank (8) through the water inlet (24) and the overflow port (25), so that the liquid level in the ice making box (2) is equal to the height of the overflow port (25).

12. The water treatment device of claim 1, wherein, An ice basket (7) is arranged below the ice making box (2) in the cold water tank (8), and the ice basket (7) has an ice containing area (73); a baffle (72) extending in the vertical direction is arranged on one side of the water outlet assembly adjacent to the ice basket (7), and the baffle (72) is configured to form a return channel (6) separated from the ice containing area (73) with the inner wall of the cold water tank (8), and the liquid flowing out of the water outlet assembly is configured to flow into the cold water tank (8) through the return channel (6).

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