Drinking water device and control method and apparatus therefor, storage medium

Abstract

The present application relates to the technical field of drinking water equipment, and discloses a drinking water equipment, a control method and device thereof and a storage medium, wherein the drinking water equipment comprises a variable-frequency booster pump, a variable-frequency compressor, a pure water tank and a water filter device; the control method comprises: when the water level of the pure water tank is lower than a preset water level, controlling the variable-frequency booster pump to be in an operating state, so that the water inlet of the drinking water equipment flows into the pure water tank after being filtered by the water filter device; and when the drinking water equipment performs an ice-making operation, controlling the variable-frequency compressor to be in an operating state, wherein the variable-frequency booster pump and the variable-frequency compressor operate in time-sharing mode, so that the manufacturing cost and circuit complexity of the drinking water equipment can be reduced, and the product competitiveness can be improved.

Description

Technical Field

[0001] This invention relates to the field of drinking water equipment technology, and in particular to a drinking water equipment, its control method and apparatus, and a storage medium. Background Technology

[0002] As people's requirements for drinking water quality increase, drinking water equipment has become more popular, and its functions have become more and more diverse. In order to enrich the multiple functions of drinking water equipment, multiple loads are usually set up, and each load is controlled separately. This undoubtedly increases the manufacturing cost and circuit complexity of drinking water equipment, and reduces the product's competitiveness. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the first objective of this invention is to provide a control method for drinking water equipment that can reduce the manufacturing cost and circuit complexity of the equipment, thereby improving the product's competitiveness.

[0004] A second objective of this invention is to provide a computer-readable storage medium.

[0005] The third objective of this invention is to provide a control device for a drinking water equipment.

[0006] The fourth objective of this invention is to provide a drinking water device.

[0007] To achieve the above objectives, a first aspect of the present invention provides a control method for a drinking water device, the drinking water device including a variable frequency booster pump, a variable frequency compressor, a pure water tank, and a water filtration device. The control method includes: when the water level of the pure water in the pure water tank is lower than a preset water level, controlling the variable frequency booster pump to operate so that the water entering the drinking water device flows into the pure water tank after being filtered by the water filtration device; and controlling the variable frequency compressor to operate when the drinking water device performs an ice-making operation, wherein the variable frequency booster pump and the variable frequency compressor operate in a time-sharing manner.

[0008] The drinking water equipment in this embodiment includes a variable frequency booster pump, a variable frequency compressor, a pure water tank, and a water filtration device. The control method of the drinking water equipment includes: controlling the operation of the variable frequency booster pump when the water level in the pure water tank is lower than a preset water level; controlling the operation of the variable frequency compressor when the drinking water equipment performs an ice-making operation; and the variable frequency booster pump and the variable frequency compressor operate in a time-sharing manner and are driven by a single variable frequency chip, thereby reducing the manufacturing cost and circuit complexity of the drinking water equipment and improving the product's competitiveness.

[0009] To achieve the above objectives, a second aspect of the present invention provides a computer-readable storage medium having a control program for a drinking water device stored thereon. When the control program is executed by a processor, it implements the control method for the drinking water device described in any of the above embodiments.

[0010] The computer-readable storage medium of this invention executes the control program of the drinking water device stored thereon through a processor, which can reduce the manufacturing cost and circuit complexity of the drinking water device and improve the product's competitiveness.

[0011] To achieve the above objectives, a third aspect of the present invention provides a control device for a drinking water device, the drinking water device including a variable frequency booster pump, a variable frequency compressor, a pure water tank, and a water filtration device. The control device is used to: control the variable frequency booster pump to operate when the water level in the pure water tank is lower than a preset water level, so that the water entering the drinking water device flows into the pure water tank after being filtered by the water filtration device; and control the variable frequency compressor to operate when the drinking water device performs an ice-making operation, wherein the variable frequency booster pump and the variable frequency compressor operate in a time-sharing manner.

[0012] The drinking water equipment in this embodiment includes a variable frequency booster pump, a variable frequency compressor, a pure water tank, and a water filtration device. The control device of the drinking water equipment is used to: control the operation of the variable frequency booster pump when the water level in the pure water tank is lower than a preset water level; and control the operation of the variable frequency compressor when the drinking water equipment performs an ice-making operation. Furthermore, the variable frequency booster pump and the variable frequency compressor operate in a time-sharing manner and are driven by a single variable frequency chip, thereby reducing the manufacturing cost and circuit complexity of the drinking water equipment and improving the product's competitiveness.

[0013] To achieve the above objectives, a fourth aspect of the present invention provides a drinking water device, which includes the control device of the drinking water device described in the above embodiments.

[0014] The drinking water equipment in this embodiment, through the control device of the drinking water equipment in the above embodiment, can reduce the manufacturing cost and circuit complexity of the drinking water equipment, and improve the product's competitiveness.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] Figure 1 This is a flowchart of a control method for a drinking water device according to one embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the water circuit connection of the water filtration device in a drinking water equipment according to one embodiment of the present invention;

[0018] Figure 3 This is a flowchart of a control method for a drinking water device in another embodiment of the present invention;

[0019] Figure 4 This is a flowchart of a control method for a drinking water device in another embodiment of the present invention;

[0020] Figure 5 This is a flowchart of a control method for a drinking water device in another embodiment of the present invention;

[0021] Figure 6 This is a flowchart of a control method for a drinking water device in another embodiment of the present invention;

[0022] Figure 7 This is a flowchart of a control method for a drinking water device in another embodiment of the present invention;

[0023] Figure 8 This is a flowchart of a control method for a drinking water device in another embodiment of the present invention;

[0024] Figure 9 This is a flowchart of a control method for a drinking water device in another embodiment of the present invention;

[0025] Figure 10 This is a flowchart of a control method for a drinking water device in another embodiment of the present invention;

[0026] Figure 11 This is a flowchart of a control method for a drinking water device in another embodiment of the present invention;

[0027] Figure 12 This is a flowchart of a control method for a drinking water device in another embodiment of the present invention;

[0028] Figure 13 This is a flowchart of a control method for a drinking water device in another embodiment of the present invention;

[0029] Figure 14 This is a flowchart of a control method for a drinking water device in another embodiment of the present invention;

[0030] Figure 15 This is a flowchart of a control method for a drinking water device in another embodiment of the present invention;

[0031] Figure 16 This is a schematic diagram of the control board of a drinking water device in one embodiment of the present invention;

[0032] Figure 17 This is a block diagram of the drinking water device in an embodiment of the present invention. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0034] The following description, with reference to the accompanying drawings, describes the drinking water equipment, its control method and apparatus, and the storage medium according to embodiments of the present invention.

[0035] The drinking water device of this invention can have functions such as purification, heating, cooling, and ice making. It requires the combined use of a booster pump and a variable frequency compressor. The booster pump can pressurize the external water supply so that the water supplied to the drinking water device is filtered by the water filtration device, while the variable frequency compressor can complete the functions of cooling and ice making.

[0036] Figure 1 This is a flowchart of a control method for a drinking water device in one embodiment of the present invention.

[0037] like Figure 1 As shown, this invention proposes a control method for a drinking water device, which includes the following steps:

[0038] S10: When the water level in the pure water tank is lower than the preset water level, the variable frequency booster pump is controlled to run so that the water entering the drinking water equipment is filtered by the water filtration device and flows into the pure water tank.

[0039] Specifically, in this embodiment, the pure water tank is used to store purified water that has been filtered by the filtration device. This purified water is directly drinkable and is also used for refrigeration and ice making in drinking water equipment. When the water level in the pure water tank is lower than the preset level, it indicates that the water volume in the tank is low and needs to be replenished. The variable frequency booster pump is then activated to pump external water to the filtration device for filtration. The filtered purified water then flows into the pure water tank for storage and later use. It should be noted that once the water level in the tank reaches the full level, the variable frequency booster pump stops operating.

[0040] S20: When the water dispenser is performing ice-making operation, the variable frequency compressor is controlled to be in operation, wherein the variable frequency booster pump and the variable frequency compressor operate in a time-sharing manner.

[0041] Specifically, in this embodiment, a variable frequency compressor can be used to cool or make ice from the purified water in the pure water tank. Therefore, when the water dispenser is performing the ice-making operation, the variable frequency compressor is controlled to be running. The variable frequency compressor and the variable frequency booster pump are controlled by a single variable frequency chip, combining two variable frequency circuits into one. This reduces the use of electronic components, lowers the circuit load, and reduces circuit design costs. In this embodiment, the variable frequency booster pump and the variable frequency compressor are controlled in a time-sharing manner through a single variable frequency chip. That is, the variable frequency booster pump and the variable frequency compressor cannot operate simultaneously; when one is running, the other must be stopped. For example, the water dispenser cannot perform the cooling function when water is being supplied, or it cannot supply water when cooling. Obviously, this does not degrade the user experience, but it significantly reduces the manufacturing cost and circuit complexity of the water dispenser, thereby improving the product's competitiveness.

[0042] In some embodiments of the present invention, such as Figure 2 As shown, the water filtration device includes a first filter element 11 and a second filter element 12. The first filter element 11 includes a first inlet, a first outlet, a second inlet, and a second outlet. The second filter element 12 includes an inlet and an outlet. The drinking water equipment also includes a main inlet valve and a pure water tank 21 inlet valve. The outlet of the main inlet valve is connected to the first inlet of the first filter element 11. The inlet of the variable frequency booster pump M is connected to the second outlet of the first filter element 11. The outlet of the variable frequency booster pump M is connected to the inlet of the second filter element 12. The outlet of the second filter element 12 is connected to the second inlet of the first filter element 11. The first outlet of the first filter element 11 is connected to the inlet of the pure water tank 21 inlet valve. The outlet of the pure water tank 21 inlet valve is connected to the pure water tank 21.

[0043] Specifically, the water filtration device in this embodiment includes a first filter element 11 and a second filter element 12. The first filter element 11 may include a pre-filter and a post-filter, and the second filter element 12 may be an RO (Reverse Osmosis) filter element. External water supply can enter the first filter element 11 through the main inlet valve. If the water is used by a tap, it can pass through the first filter element 11 and be directly supplied to the tap. Tap water is generally used for kitchen water, toilet water, etc., in which case it does not need to pass through the second filter element 12 for filtration. If the water is supplied to the pure water tank 21, the water filtered by the first filter element 11 can also pass through the second filter element 12 for filtration through the second outlet, the second inlet, and the variable frequency booster pump M. After filtration, the water flows back to the first filter element 11, and then flows to the pure water tank 21 through the first outlet of the first filter element 11 and the inlet valve of the pure water tank 21. A branch is provided in the water filtration circuit of the second filter element 12, which is equipped with a backflow valve and a check valve to reduce the water pressure in the circulating water circuit and ensure that the second filter element 12 can fully filter the water flow. A check valve and a water pressure switch are also provided in the water circuit between the first filter element 11 and the pure water tank 21 to prevent backflow of water from affecting the operation of the first filter element 11.

[0044] In this embodiment, when the variable frequency booster pump M is in operation, the main water inlet valve and the pure water tank inlet valve are in the open state.

[0045] Specifically, in order to ensure successful water intake of the pure water tank 21, this embodiment controls the main water inlet valve and the pure water tank inlet valve to be in the open state when the variable frequency booster pump M starts running, so that the pure water filtered by the first filter element 11 and the second filter element 12 can flow smoothly into the pure water tank 21.

[0046] In some embodiments of the present invention, the water dispenser further includes an ice maker, an ice-making limit switch, and an ice-removal limit switch. When the water dispenser performs an ice-making operation, the ice maker is made in the ice maker via an evaporator. Then, a motor controls the ice maker to flip, pouring out the ice water. The remaining ice is then transferred to an ice storage box, and finally, a dispensing device is used to dispense the ice according to the user's needs. It is crucial that the ice maker flips to the correct position during operation. If the ice maker fails to flip to the ice-making position before starting ice-making, the water dispenser cannot perform its ice-making function correctly. Obviously, the ice maker will have different positions in different operating states. The present invention uses the ice-making limit switch and the ice-removal limit switch to limit the ice maker's position, ensuring it is in the correct location, reducing the failure rate of the ice-making operation, controlling the water dispenser to smoothly complete the ice-making operation, and improving product safety and user experience.

[0047] Figure 3 This is a flowchart of a control method for a drinking water device in another embodiment of the present invention.

[0048] like Figure 3 As shown, the control method for the drinking water equipment in this embodiment includes the following steps:

[0049] S301: When the water dispenser performs an ice-making operation, it acquires the status information of the ice-making operation.

[0050] S302 drives the ice maker based on the status information.

[0051] Specifically, the control method for the water dispenser in this embodiment is applied to the ice-making operation of the water dispenser. Since ice cubes can easily stick together, preventing the ice maker from rotating properly, the control method in this embodiment solves this problem, enabling the water dispenser to effectively complete the ice-making and dispensing processes and automatically resolve malfunctions. For different status information during the ice-making operation, the ice maker is in different positions. This embodiment uses a stepper motor to drive the ice maker, ensuring the water dispenser smoothly completes the ice-making operation.

[0052] S303, obtain the on / off status of the ice-making limit switch and the ice-removing limit switch.

[0053] Specifically, after driving the ice maker, it can be further determined whether the ice maker has flipped into place. This can be determined by the status of the ice making limit switch and the ice removal limit switch. First, the switch status of the ice making limit switch and the ice removal limit switch is obtained by the sensor. The switch status includes open and closed states. When the ice maker is in the ice making position, the ice making limit switch is closed and the ice removal limit switch is open. When the ice maker is in the ice removal position, the ice removal limit switch is closed and the ice making limit switch is open.

[0054] S304, adjust the ice box and status information according to the on / off status of the ice-making limit switch and the ice-removal limit switch to reduce the failure rate of ice-making operation.

[0055] Specifically, the ice-making operation includes multiple ice-making states. After the ice-making box is driven by a stepper motor, the on / off state of the ice-making limit switch and the ice-removal limit switch can be used to determine whether the ice-making box has been successfully flipped to the designated position. This allows for further adjustments to the ice-making box and ice-making state, ensuring that the water dispenser can successfully complete the ice-making operation and reducing the failure rate of the ice-making operation.

[0056] In this embodiment, the ice-making operation includes multiple status information, which may include power-on standby state, power-on de-icing state, standby state, inverter compressor forced protection state, ice-making state, ice-making paused state, de-icing state, return-to-position fault de-icing state, return-to-position fault standby state, tilting fault de-icing state, and tilting fault standby state. The following embodiments will describe in detail the specific operation of the water dispenser when it is in different ice-making states.

[0057] This invention begins with the water dispenser being powered on and executing the ice-making operation. After the water dispenser is powered on, it enters a power-on standby state. In this power-on standby state, such as... Figure 4 As shown, the control methods include:

[0058] S401, obtain the duration of the power-on standby state.

[0059] S402, when the duration is greater than or equal to the first preset duration, adjust the status information to power-on de-icing state.

[0060] Specifically, a timer starts after the water dispenser enters the power-on standby state and continuously acquires the standby duration. If the standby duration reaches a first preset duration and the detection of various functions in the water dispenser is completed, the water dispenser can be controlled to enter the ice-removal state. The ice-removal state cleans the ice left in the ice container after the previous ice-making operation, preventing it from affecting the current ice-making operation. Optionally, the first preset duration in this embodiment can be two minutes, three minutes, or four minutes, etc., and this first preset duration can be set according to the specifications of the water dispenser, without specific limitation here.

[0061] It should be noted that when the water dispenser is powered on and in standby mode, the loads used for ice making can be set to be inactive. For example, the inverter compressor, circulating water pump, and refrigerant solenoid valve can all be set to inactive. The circulating water pump can pump the cold water tank storing cold water in the water dispenser to the ice maker, and the water in the ice maker is processed into ice by the operation of the inverter compressor and refrigerant solenoid valve.

[0062] After the water dispenser is powered on and de-icing is complete, such as Figure 5 As shown, the control methods include:

[0063] S501, obtain the temperature information of the environment where the ice box is located, and determine the de-icing time based on the temperature information.

[0064] S502 controls the ice maker to rotate back and forth from the ice-making position to the ice-removing position a first preset number of times via a stepper motor, and then adjusts the status information to standby state. The duration of each rotation to the ice-making position or the ice-removing position is the ice-removing duration.

[0065] Specifically, after the water dispenser enters the power-on de-icing state, the ice maker's tilting mechanism transfers any remaining ice from the ice maker to the ice storage box, ensuring smooth ice-making and reducing the likelihood of malfunctions. More specifically, the inverter compressor and refrigerant solenoid valve are first opened to remove ice from the evaporator. Since the evaporator is positioned above the ice maker, the ice removed from it falls accurately into the ice maker. After de-icing is complete, a stepper motor controls the ice maker to tilt for five seconds to the de-icing position. If the de-icing limit switch closes, the ice maker has reached the de-icing position, and the stepper motor stops. Then, the stepper motor controls the ice maker to tilt for another five seconds to the ice-making position. If the ice-making limit switch closes, the ice maker has reached the ice-making position, and the stepper motor stops again. Each time the ice maker flips back and forth, a count is recorded. After repeating the above steps a first preset number of times, the ice maker is controlled to flip and stop at the ice-making position. Then, it is detected that the ice-making limit switch is in the closed state and the ice-removal limit switch is in the open state, indicating that the ice maker has completed power-on and ice-removal, and the ice maker has flipped to the correct position. The water dispenser can then be controlled to enter standby mode. It should be noted that the ice maker will pause when flipping to the ice-making or ice-removal position, and the duration of this pause can be determined based on the current ambient temperature; the lower the ambient temperature, the longer the pause time.

[0066] Optionally, the first preset number of times can be two, or even more, with the aim of ensuring that the ice remaining in the water dispenser can be completely removed.

[0067] In some embodiments of the present invention, the drinking water device includes a cold water tank, a cooling switch, and an ice-making switch. The water stored in the cold water tank can be used for cooling or ice-making. When the drinking water device is in standby mode, such as Figure 6 As shown, the control method also includes:

[0068] S601, obtain the water storage capacity of the cold water tank, the temperature of the cold water in the cold water tank, the on / off status of the refrigeration switch and the on / off status of the ice-making switch.

[0069] S602 controls the stepper motor based on the water storage capacity, the temperature of the cold water, the on / off status of the refrigeration switch, and the on / off status of the ice-making switch.

[0070] S603 controls different programs to put the water dispenser into standby mode after the stepper motor has completed its operation.

[0071] Specifically, the cold water tank in this embodiment can be referred to the relevant description in the above embodiments. The cold water tank is specifically used to store cold water, which can be directly provided to users or pumped to an ice maker for ice making via a circulating water pump. In addition, the drinking water device in this embodiment also includes a cooling switch and an ice-making switch. After the drinking water device is powered on, it can first cool and then make ice. It should be noted that ice may also be produced during the cooling process.

[0072] When the water dispenser is in standby mode, different programs within this mode can be further determined. In this standby mode, the water dispenser needs to first cool down to meet the requirements of subsequent ice-making. Specifically, the stepper motor can be controlled based on the cold water temperature, water storage capacity, cooling switch, and ice-making switch, enabling the stepper motor to control the ice-making box. Then, the on / off states of the ice-making limit switch and the ice-removal limit switch control the water dispenser to enter different programs within the standby mode. In this embodiment, the standby mode includes multiple programs, specifically including a cooling shutdown program, a cooling insulation program, a cooling program, a cooling ice-removal program, and a cooling ice-removal waiting program.

[0073] In this embodiment, when the water dispenser is in standby mode, the amount of water stored in the cold water tank can be determined first, such as... Figure 7 As shown, the control method also includes:

[0074] S701 If it is determined that the cold water tank is in a water shortage state based on the water storage volume, the water drinking equipment is controlled to enter the cooling shutdown program, and the ice maker is flipped to the ice removal position by the stepper motor.

[0075] S702: If the cold water tank is determined to be in a water-sufficient state based on the water storage volume, the drinking water equipment will be directly controlled to enter the cooling shutdown procedure.

[0076] Specifically, since the variable frequency booster pump and variable frequency compressor cannot operate simultaneously, the cold water tank must be kept full while the variable frequency compressor is making ice. Because the water used for ice making in the water dispenser is supplied by the cold water tank, if the cold water tank is low on water, the dispenser will not cool and will enter a cooling shutdown program. A stepper motor will then flip the ice maker to the defrost position. This means that flipping the ice maker to the defrost position is equivalent to not placing it directly under the evaporator. In this case, the circulating water pump cannot properly pump cold water to the ice maker, and the water in the cold water tank, after being pumped to the ice maker, will flow back into the cold water tank. It should be noted that this description only describes the water flow direction between the cold water tank, ice maker, and circulating water pump; their specific locations are not specifically limited in this embodiment. If the cold water tank is not low on water, the cooling shutdown program can be entered directly without flipping the ice maker to the defrost position, allowing the ice-making operation to be completed smoothly in subsequent steps.

[0077] In the cooling shutdown procedure, such as Figure 8 As shown, the control method also includes:

[0078] S801, when the cooling switch is closed, the ice-making switch is open, and the temperature of the cold water is higher than the cooling start temperature, controls the ice-making box to flip to the ice-making position via a stepper motor and controls the water dispenser to enter the cooling program.

[0079] S802, when the refrigeration switch is closed, the ice-making switch is open, and the temperature of the cold water is lower than or equal to the refrigeration start temperature, controls the ice-making box to flip to the ice-removal position via a stepper motor, and controls the water dispenser to enter the refrigeration and heat preservation program.

[0080] S803, when the cooling switch is off, the ice-making switch is on, and the temperature of the cold water is higher than the ice-making start temperature, controls the ice-making box to flip to the ice-making position via a stepper motor and controls the water dispenser to enter the cooling program.

[0081] S804, when the refrigeration switch is off, the ice-making switch is closed, and the temperature of the cold water is lower than or equal to the ice-cold start temperature, controls the ice-making box to flip to the ice-removal position via a stepper motor, and controls the water dispenser to enter the refrigeration and heat preservation program.

[0082] S805, when the cooling switch and the ice-making switch are both off, controls the ice-making box to flip to the ice-removal position via a stepper motor.

[0083] Specifically, after the water dispenser enters the cooling shutdown procedure, the cooling switch and the ice-making switch are judged, and combined with the temperature of the cold water in the cold water tank, in this embodiment, the switching states of the cooling switch and the ice-making switch have three states: the cooling switch is closed and the ice-making switch is open, the cooling switch is open and the ice-making switch is closed, and both the cooling switch and the ice-making switch are open.

[0084] If the cooling switch is closed and the ice-making switch is open, and the temperature of the cold water in the cold water tank is higher than the cooling start temperature, the ice maker can be controlled by a stepper motor to flip to the ice-making position. If the ice-making limit switch is closed, the stepper motor will not move. If the temperature of the cold water is lower than or equal to the cooling start temperature, the ice maker will be controlled by a stepper motor to flip to the de-icing position, and the water dispenser will enter the cooling and heat preservation program. If the ice-making limit switch is open, the stepper motor will not move.

[0085] If the cooling switch is off and the ice-making switch is closed, and the temperature of the cold water in the cold water phase is higher than the ice-making start temperature, the ice maker can be controlled by a stepper motor to flip to the ice-making position. If the ice-making limit switch is closed, the water dispenser will enter the cooling program, and the stepper motor will not operate. If the temperature of the cold water is lower than or equal to the ice-making start temperature, the ice maker can be controlled by a stepper motor to flip to the ice-removing position. If the ice-removing limit switch is closed, the water dispenser will enter the ice-making and heat-preservation program, and the stepper motor will not operate.

[0086] If the cooling switch and the ice-making switch are both off, the ice-making box will be flipped to the ice-removing position by the stepper motor. After the ice-removing limit switch is closed, the stepper motor will stop rotating and will not move.

[0087] Optionally, in this embodiment, the cooling start temperature can be 9.5 degrees Celsius, and the ice-cold start temperature can be 8.5 degrees Celsius.

[0088] In some embodiments of the present invention, during the cooling process, such as Figure 9 As shown, the control method also includes:

[0089] S901, when the ice-making limit switch is in the off state and the duration of the water dispenser entering the cooling program exceeds the second preset duration, the ice-making box is flipped to the ice-making position by a stepper motor.

[0090] S902, when the ice-making limit switch is closed, the ice-removing limit switch is open, and the duration of the water dispenser entering the cooling program has not exceeded the second preset duration, water is added to the ice-making box.

[0091] Specifically, in the cooling process, the ice-making limit switch is first checked, and the time it takes for the water dispenser to enter the cooling process is recorded. If the ice-making limit switch is open and the water dispenser has been in the cooling process for more than a second preset time, it indicates that the ice maker is not in the ice-making position. In this case, the ice maker can be flipped to the ice-making position by controlling the stepper motor. If the ice-making limit switch is closed, the ice-removal limit switch is open, and the water dispenser has been in the cooling process for less than the second preset time, it indicates that the ice maker is in the ice-making position. Water can then be added to the ice maker by turning on the inverter compressor and the circulating water pump.

[0092] Optionally, in this embodiment, the second preset duration can be 5 minutes.

[0093] Furthermore, in the refrigeration process, the control methods also include:

[0094] When the cooling switch is closed and the ice-making switch is open, and the temperature of the cold water is lower than the cooling and insulation temperature, or when the cooling switch is open and the ice-making switch is closed, and the temperature of the cold water is lower than the ice-cold insulation temperature, or when the cooling switch is open and the ice-making switch is open, if the ice container is not full of ice, the water dispenser will be controlled to enter the cooling and de-icing program, and the ice container will be flipped to the de-icing position by a stepper motor. If the ice container is full of ice, the water dispenser will be controlled to enter the variable frequency compressor forced protection state, and the ice container will be flipped to the de-icing position by a stepper motor. After a third preset time, the water dispenser will be controlled to enter the cooling and de-icing waiting program.

[0095] Specifically, among the three conditions described above—refrigeration switch closed, ice-making switch open, and cold water temperature lower than the refrigeration insulation temperature; refrigeration switch open, ice-making switch closed, and cold water temperature lower than the ice-making insulation temperature; and refrigeration switch open, ice-making switch open—if any one of these conditions is met, the next step can be determined: whether the ice maker is full of ice. It should be noted that removing ice from the ice maker when it is not full increases the success rate. If the ice maker is full, the success rate is lower, and ice cubes may stick together, making it difficult to remove ice effectively. Therefore, this embodiment defines that if the ice maker is full of ice, the water dispenser will enter the variable frequency compressor forced protection state, and the ice maker will be flipped to the ice removal position by the stepper motor until the ice removal limit switch is closed. Then the stepper motor will stop rotating, and after a third preset time, the water dispenser will enter the cooling and ice removal waiting program. If the ice maker is full of ice, the water dispenser will enter the cooling and ice removal program, and the ice maker will be flipped to the ice removal position by the stepper motor. After the ice removal limit switch is closed, the stepper motor will stop rotating.

[0096] Optionally, in this embodiment, the cooling and heat preservation temperature is 6 degrees Celsius, the ice-cold heat preservation temperature is 7 degrees Celsius, and the third preset duration is 3 minutes.

[0097] In some embodiments of the present invention, after the water drinking device enters the cooling and de-icing process, such as Figure 10 As shown, the control methods include:

[0098] S1001 controls the ice maker to rotate back and forth between the ice-making position and the ice-removing position a second preset number of times via a stepper motor, and then returns to the ice-making position, and detects the status of the ice-making switch and the ice maker.

[0099] S1002: When the ice-making switch is off and the ice container is not full of ice, the water dispenser is controlled to enter the ice-making state. If the ice-making limit switch is closed and the ice-removal limit switch is open, water is added to the ice container. If the ice-making limit switch is open and the ice-removal limit switch is closed, the ice container is flipped to the ice-removal position by a stepper motor.

[0100] S1003, when the ice-making switch is off or the ice container is full of ice, the stepper motor flips the ice container to the ice-removal position.

[0101] Specifically, after the water dispenser enters the cooling and de-icing process, the refrigerant valve can be opened to perform the de-icing operation. During this process, the inverter compressor remains on to reduce the number of start-stop cycles, thereby extending its lifespan. Then, a stepper motor controls the ice maker to rotate for five seconds to the ice-making position. During this rotation, the inverter compressor and refrigerant solenoid valve remain open. After the ice-making limit switch closes, the ice maker rotates for another five seconds to the de-icing position. After the de-icing limit switch closes, the stepper motor can repeat the above steps a second preset number of times. Finally, the ice maker needs to be rotated back to the ice-making position. Optionally, the second preset number of rotations can be twice.

[0102] After the ice maker tray completes its rotation, the status of the ice-making switch and the ice maker tray are checked. If the ice-making switch is closed and the ice maker tray is not full of ice, the water dispenser is controlled to enter the ice-making state. Then, the following judgments are made: If the ice-making limit switch is closed and the ice-removal limit switch is open, water is added to the ice maker tray; otherwise, the ice maker tray is tilted towards the ice-removal position via a stepper motor until the ice-removal limit switch closes, at which point the stepper motor stops rotating. If the ice-making switch is open or the ice maker tray is full of ice, the ice maker tray is rotated towards the ice-removal position via a stepper motor until the ice-removal limit switch closes, at which point the stepper motor stops rotating.

[0103] In some embodiments of the present invention, after the water drinking equipment enters the cooling and heat preservation program, the control method includes:

[0104] When the ice-making switch is off, or when the ice-making switch is on and the ice container is full of ice, if the cooling switch is on and the temperature of the cold water is higher than the cooling start temperature, then when the ice-making limit switch is off, the ice container is flipped to the ice-making position by the stepper motor, and the water dispenser enters the cooling program. When the ice-making limit switch is not off, the water dispenser is directly controlled to enter the cooling program. If the cooling switch is off, the water dispenser enters the cooling shutdown program, and the ice container is flipped to the ice-removing position by the stepper motor.

[0105] Specifically, after the water dispenser enters the cooling and insulation program, corresponding operations can be performed by determining whether the ice-making switch, the cooling switch, and the ice container are full of ice. If the ice-making switch is off, or if the ice-making switch is on and the ice container is full of ice, the system checks whether the cooling switch is closed. If the cooling switch is closed, the system further checks the temperature of the cold water. If the cold water temperature is also higher than the cooling start temperature, the ice container is flipped to the ice-making position via a stepper motor when the ice-making limit switch is off. When the ice-making limit switch is closed, the stepper motor stops rotating to enter the cooling program. If the ice-making limit switch is not off, the water dispenser can be directly controlled to enter the cooling program, and then the stepper motor stops rotating. If the cooling switch is determined to be off, the water dispenser can be controlled to enter the cooling shutdown program, and the ice container is flipped to the ice-removing position via a stepper motor until the ice-removing limit switch is closed, at which point the stepper motor stops rotating. It should be noted that the cooling shutdown program is detailed in the relevant description of the above embodiments and will not be repeated here.

[0106] Optionally, in this embodiment, the cooling start-up temperature is 9.5 degrees Celsius.

[0107] In some embodiments of the present invention, during the cooling and de-icing waiting process, such as Figure 11 The control method further includes:

[0108] S1101, when the ice maker is not full of ice, controls the water dispenser to enter the cooling and de-icing program, and controls the ice maker to flip to the de-icing position through the stepper motor and continue for the fourth preset time.

[0109] S1102, when the ice maker is full of ice, if the refrigeration switch is closed and the temperature of the cold water is higher than the refrigeration start temperature, or if the refrigeration switch is open and the ice maker switch is closed and the temperature of the cold water is higher than the ice start temperature, the ice maker limit switch is checked.

[0110] S1103, when the ice-making limit switch is in the off state, controls the ice-making box to flip to the ice-making position via a stepper motor.

[0111] S1104 When the ice-making limit switch is not in the off state, the water dispenser is controlled to enter the cooling and heat preservation program, and the ice box is flipped to the ice removal position by the stepper motor.

[0112] Specifically, after the water dispenser enters the cooling and de-icing waiting program, the following operations can be performed by detecting the status of the ice maker and the ice-making limit switch. First, when the ice maker is not full of ice, the water dispenser is controlled to enter the cooling and de-icing state. Then, the ice maker is controlled by a stepper motor to flip to the de-icing position and continue for a fourth preset time. After the de-icing limit switch closes, the stepper motor can be controlled to stop rotating. If the ice maker is full of ice, it can be determined whether one of the following conditions is met: the cooling switch is closed and the cold water temperature is greater than the cooling start temperature, or the cooling switch is open and the ice-making switch is closed and the cold water temperature is greater than the ice-cold start temperature. If either condition is met, the water dispenser is controlled to enter the cooling program. At the same time, if it is determined that the ice-making limit switch is open, the ice maker is controlled by a stepper motor to flip to the ice-making position until the ice-making limit switch closes, at which point the motor stops rotating. If the ice-making limit switch is not open, the water dispenser is controlled to enter the cooling and heat preservation program, and the ice maker is controlled by a stepper motor to flip to the de-icing position.

[0113] Optionally, in this embodiment, the cooling start temperature is 9.5 degrees Celsius, the ice-cold start temperature is 8.5 degrees Celsius, and the fourth preset duration is 5 seconds.

[0114] In some embodiments of the present invention, when the water dispenser is in a forced protection state of the variable frequency compressor, the method further includes: controlling the load of the water dispenser to stop working, and after a fifth preset time period, controlling the water dispenser to enter a standby state.

[0115] Specifically, the variable frequency compressor forced protection state is the state that needs to be entered when the ice box is full of ice in the refrigeration process. After the water dispenser enters the variable frequency compressor forced protection state, the load of the water dispenser can be controlled to stop working. For example, the variable frequency compressor, the circulating water pump, and the refrigerant solenoid valve will not work. Then, the water dispenser will remain in this state for a fifth preset time, and then the water dispenser will be controlled to enter the standby state. For a detailed description of the standby state, please refer to the description of the above embodiment, which will not be repeated here.

[0116] Optionally, the fifth preset duration in this embodiment can be 3 minutes.

[0117] In some embodiments of the present invention, the ice-making state of the water dispenser includes an ice-making box tilting procedure, an ice-making box return procedure, an ice-making box water replenishment procedure, and an ice-making procedure.

[0118] Specifically, before transferring the prepared ice to the ice storage box during the ice-making process, the water dispenser needs to tilt the ice-making box to pour out the water. Then, while controlling the ice-making box to return to its original position, the ice is transferred to the ice storage box. After that, water is added to the ice-making box, and the ice-making process continues. The following describes the specific operation of different programs of the water dispenser in the ice-making state.

[0119] In some embodiments of the present invention, when the water dispenser is in the ice box tilting program, the control method further includes: when the ice box is controlled to flip to the ice removal position by the stepper motor, if the stepper motor flips to the correct position and the ice removal limit switch is in the off state, the number of tilting abnormalities of the ice box is incremented by one; otherwise, the number of tilting abnormalities is cleared to zero; if the stepper motor flips to the correct position, the water dispenser is controlled to enter the ice box return program.

[0120] Specifically, in this ice-making container tilting procedure, the ice-making container is first controlled by a stepper motor to rotate to the ice-removal position. During the rotation process, the stepper motor can be controlled according to a preset step. Under normal circumstances, after the motor rotates to the correct position, the corresponding limit switch will also be closed. Alternatively, a rotation time can be set, and the ice-making container is considered complete after the stepper motor has run normally for that time. For example, after the stepper motor completes the rotation to the ice-making position, the ice-making limit switch will be closed. If the ice-making limit switch is not closed, it indicates an abnormality.

[0121] In this embodiment, flipping the ice maker from the ice-making position to the ice-removing position is defined as tipping, and flipping the ice maker from the ice-removing position back to the ice-making position is defined as returning to the starting position. During the stepper motor-controlled flipping of the ice maker from the ice-making position to the ice-removing position, if the stepper motor has completed the flipping according to the instruction, but the ice-removing limit switch is still in the open state, it indicates that the ice maker has not yet flipped to the ice-removing position, but the stepper motor has already completed the control, thus indicating a tipping anomaly. The tipping anomaly count can be incremented by one. If the stepper motor flips to the correct position and the ice-removing limit switch is also in the closed state, it indicates that the ice maker can complete the tipping normally, thus resetting the tipping anomaly count to zero and controlling the water dispenser to enter the ice maker return-to-position procedure.

[0122] In the ice container return process, such as Figure 12 As shown, the control method further includes the following steps:

[0123] S1201: When the ice-making limit switch is closed, the ice-removing limit switch is open, and the number of tipping errors is zero, the water dispenser is controlled to enter the ice box water replenishment program.

[0124] S1202: When the ice-making limit switch is not in the closed state, or the ice-removing limit switch is not in the open state, or the number of abnormal tipping times is non-zero, the ice-making box is controlled to flip to the ice-removing position by a stepper motor.

[0125] S1203: When the stepper motor rotates to the correct position and the ice removal limit switch is in the off state, an abnormal count of the ice box return position is performed.

[0126] S1204: If the number of abnormal pouring incidents and the number of abnormal ice box return incidents do not exceed the third preset number, the water dispenser is controlled to enter the ice box pouring procedure. If the number of abnormal pouring incidents or the number of abnormal ice box return incidents exceed the third preset number, the water dispenser is controlled to enter the return fault ice removal state.

[0127] Specifically, after the stepper motor controls the ice maker to flip back to its original position, it can be further determined whether the ice-making limit switch is closed. If the ice-making limit switch is closed and the ice-removal limit switch is open, and the number of tipping anomalies is zero, the water dispenser can then be controlled to enter the ice maker water replenishment program, after which the motor will not operate. However, if the ice-making limit switch is not closed, or the ice-removal limit switch is not open, or the number of tipping anomalies is not zero, the ice maker can first be controlled by the stepper motor to flip towards the ice-removal position, and then the ice maker can be controlled by the stepper motor to return to its original position. Refer to the relevant description of the tipping control above. During the return process, if the stepper motor flips to the correct position, but the ice-removal limit switch is open, it means that the ice maker has not reached the ice-removal position. Therefore, there will be an anomaly during the return process, and the number of return anomalies for the ice maker will be incremented by one.

[0128] If the number of tipping anomalies and return anomalies does not exceed a third preset number, the water dispenser can be controlled to enter the ice-making box tipping procedure; otherwise, the water dispenser can be controlled to enter the return anomaly de-icing state. In this embodiment, when the ice-making box experiences tipping and return anomalies, it may be because there are frozen ice blocks in the ice-making box's flipping circuit that cannot be removed during the ice-making box's flipping process. Therefore, a stepper motor is used to control the ice-making box to flip back and forth to remove as much frozen ice blocks as possible from the flipping circuit. During the ice-making box's flipping process, tipping and return anomaly checks are still performed. When the number of tipping anomalies exceeds a third preset number, it can be determined that the water dispenser has a fault, and the type of fault is tipping fault, i.e., the water dispenser is determined to be in the tipping fault de-icing state. Similarly, when the number of return anomalies exceeds a third preset number, it can be determined that the water dispenser has a fault, and the type of fault is return anomaly, i.e., the water dispenser is determined to be in the return anomaly de-icing state.

[0129] Optionally, in this embodiment, the third preset number of times can be three. Of course, in this embodiment, the specific value can also be left unrestricted.

[0130] When the water dispenser is in the ice maker refill program, such as Figure 13 As shown, the control method further includes the following steps:

[0131] S1301: When the ice-making limit switch is closed and the ice-removal limit switch is open, water is added to the ice-making box, and the water-addition time of the ice-making box is obtained.

[0132] S1302, when the water injection time reaches the sixth preset time, controls the water drinking equipment to enter the ice making program.

[0133] Specifically, during the process of refilling the ice maker, it is necessary to determine whether the ice maker is in the ice-making position. If the ice maker is not in the ice-making position, the refilling process may not be completed properly. For example, if the ice maker is in the ice-removal position, the water added to the ice maker may continue to leak and flow into the cold water tank. Therefore, this embodiment also specifically determines the ice-making limit switch and the ice-removal limit switch. If the ice-making limit switch is in the closed state and the ice-removal limit switch is in the open state, it indicates that the ice maker is in the ice-making position, and water can be added to the ice maker. During the process of refilling the ice maker, the water filling time can be obtained. If the water filling time reaches the sixth preset time, it indicates that the refilling is complete, and the water dispenser can be controlled to enter the ice-making process. It should be noted that the ice maker can be placed above the cold water tank, which allows the sixth preset time to be increased. This is because even if the increased water replenishment time causes cold water to overflow from the ice maker, the overflowing water will still flow into the cold water tank. Of course, if the ice maker is not placed above the cold water tank, the sixth preset time can be smaller.

[0134] After the ice maker completes the water replenishment process, the control method includes: when the ice maker is full of ice, if both the cooling switch and the ice maker switch are closed and the temperature of the cold water is higher than the cooling start temperature, or if the cooling switch is open and the ice maker switch is closed and the temperature of the cold water is higher than the ice start temperature, then the water dispenser is controlled to enter the standby state; otherwise, the water dispenser is controlled to enter the ice-making pause state. When the water dispenser has been in the ice-making process for the target ice-making time, the ice maker is controlled to flip to the ice-removal position by a stepper motor, and then the water dispenser is controlled to enter the ice-removal state.

[0135] Specifically, in this embodiment, an ice-making time can be preset. This ice-making time starts timing after the water dispenser enters the ice-making program. If the ice container is detected to be full of ice before the ice-making time is reached, the following conditions are checked: the cooling switch is closed, the ice-making switch is closed, and the temperature of the cold water is higher than the cooling start temperature; or the cooling switch is open, the ice-making switch is closed, and the temperature of the cold water is higher than the ice-cold start temperature. When either of these two conditions is met, the water dispenser is controlled to enter a standby state, specifically entering the cooling program in the standby state. When neither of these two conditions is met, the water dispenser is controlled to enter an ice-making pause state, which will be described in detail in the following embodiments. After the water dispenser reaches the ice-making time, the stepper motor flips to the ice-removal position, and the ice-removal limit switch is checked. If the ice-removal limit switch is closed, the stepper motor is controlled to rotate, and the water dispenser enters the ice-removal state, which will be described in detail in the following embodiments.

[0136] It should be noted that the inverter compressor operates throughout the entire ice-making process of the water dispenser. Additionally, the cooling start temperature can be selected as 9.5 degrees Celsius, and the ice-cold start temperature can be selected as 8.5 degrees Celsius.

[0137] When the water dispenser is in the ice-making pause state, the control method also includes the following steps: after the water dispenser enters the ice-making pause state for the seventh preset time, if the ice box is not full of ice, the stepper motor controls the ice box to flip to the ice-removal position. If the ice box is full of ice, and at the same time the cooling switch is closed and the temperature of the cold water is higher than the cooling start temperature, or the cooling switch is open and the temperature of the cold water is higher than the ice-cold start temperature, the water dispenser is controlled to enter the standby state.

[0138] Specifically, after the water dispenser enters the ice-making pause state, it can wait for a seventh preset time, optionally three minutes. After three minutes, it checks if the ice container is full of ice. If the ice container is not full, the water dispenser can enter the ice-removal state. Specifically, a stepper motor controls the ice container to flip to the ice-removal position until the ice-removal limit switch closes, and then the stepper motor stops rotating. If the ice container is full, it checks if one of the following two conditions is met: the cooling switch is closed and the cold water temperature is higher than the cooling start temperature; or the cooling switch is open and the cold water temperature is higher than the ice-cold start temperature. If either of these conditions is met, the water dispenser enters the standby state. If neither of these conditions is met, the water dispenser remains in the current ice-making pause state.

[0139] Optionally, in this embodiment, the cooling start temperature can be 9.5 degrees Celsius, and the ice-cold start temperature can be 8.5 degrees Celsius.

[0140] In some embodiments of the present invention, when the drinking water device is in a de-icing state, the control method further includes the following steps:

[0141] When the de-icing load starts and the de-icing time reaches the target de-icing time, if the de-icing limit switch is in the open state, a de-icing fault count is performed. When the de-icing fault count reaches the fourth preset number, it is determined that the water dispenser has a de-icing fault in the ice box. If the de-icing limit switch is not in the open state, the ice box is first flipped to the ice-making position by the stepper motor, and then flipped to the de-icing position to enter the normal de-icing waiting return program.

[0142] Specifically, the water dispenser includes a de-icing load, which can be a variable frequency compressor and a refrigerant valve load. When the water dispenser is de-icing, the de-icing time is first recorded. If the target de-icing time is obtained, the state of the de-icing limit switch can be determined. If the de-icing limit switch is open, it indicates that the ice maker is not currently in the de-icing position, thus requiring a de-icing fault count. If the de-icing fault count is less than two, the stepper motor will continue to rotate to the de-icing position. If the de-icing fault count is three, the water dispenser will be controlled to enter the ice maker de-icing fault state. It should be noted that three times in this example is an example of the fourth preset count, which can also be other positive integer values. If the de-icing limit switch is not open, the stepper motor can first rotate the ice maker to the ice-making position for one de-icing operation, and then rotate the ice maker back to the de-icing position to enter the normal de-icing waiting return procedure.

[0143] During the normal ice removal and return-to-position procedure, the control method further includes: when the ice-making switch is open, or the ice-making switch is closed and the ice container is full of ice and the temperature of the cold water is lower than the ice-cold start temperature, and the refrigeration switch is also open, or the refrigeration switch is closed and the temperature of the cold water is lower than the refrigeration start temperature, the water dispenser is controlled to enter the variable frequency compressor forced protection state, and the ice container is flipped to the ice removal position via a stepper motor; when the conditions of the ice-making switch being open, or the ice-making switch being closed and the ice container is full of ice and the temperature of the cold water is lower than the ice-cold start temperature are not met, or the conditions of the refrigeration switch being open, or the refrigeration switch being closed and the temperature of the cold water is lower than the refrigeration start temperature are not met, the water dispenser is controlled to enter the standby state.

[0144] Specifically, during the normal ice removal and return-to-position procedure, the water dispenser needs to enter the inverter compressor forced protection state if the following conditions are met: the ice maker switch is off, or the ice maker switch is closed while the ice container is full of ice and the cold water temperature is lower than the ice-cold start temperature; and the refrigeration switch is off, or the refrigeration switch is closed while the cold water temperature is lower than the refrigeration start temperature. If all the above conditions are met simultaneously, the water dispenser enters the inverter compressor forced protection state and controls the ice container to flip to the ice removal position via a stepper motor. If none of the above conditions are met simultaneously, the water dispenser can be controlled to enter standby mode.

[0145] It should be noted that the specific operation of the water dispenser in the forced protection state and standby state of the variable frequency compressor can be found in the relevant descriptions of the above embodiments, and will not be repeated here to avoid redundancy. Optionally, in this embodiment, the ice-cold start temperature can be 8.5 degrees Celsius, and the cooling start temperature can be 9.5 degrees Celsius.

[0146] In some embodiments of the present invention, such as Figure 14 As shown, when the drinking water equipment is in a tilting fault and de-icing state, the method also includes:

[0147] S1401, Obtain the ambient temperature when the drinking water equipment is in a tilting fault and de-icing state.

[0148] S1402 controls the de-icing of drinking water equipment.

[0149] S1403, obtain the de-icing time of the water dispenser and the preset de-icing time corresponding to the ambient temperature.

[0150] S1404 When the de-icing time is a preset multiple of the preset de-icing time, the ice maker is controlled by a stepper motor to flip to the de-icing position. After the stepper motor flips to the position, if the ice-making limit switch is in the open state and the de-icing limit switch is in the closed state, it is determined that the water dispenser is in the normal de-icing waiting return state, and the ice maker is controlled by a stepper motor to flip to the ice-making position.

[0151] S1405 If the ice-making limit switch is in the closed state or the ice-removing limit switch is in the open state, it is determined that the water drinking equipment is in a tilting fault standby state.

[0152] Specifically, in this invention, during the de-icing process of the water dispenser, the variable frequency compressor and refrigerant solenoid valve are first opened, allowing the evaporator, which was originally making ice, to generate heat. This heat causes the ice adhering to the evaporator to fall into the ice-making container. Then, the ice-making container is tilted to pour out the water. In this embodiment, during the de-icing process of the water dispenser, the ambient temperature and the de-icing time of the water dispenser need to be obtained. Then, based on the ambient temperature, a corresponding preset de-icing time can be determined. This preset de-icing time can be stored in the memory and retrieved directly based on the ambient temperature.

[0153] After obtaining the preset defrosting time and the actual defrosting time, the two times can be compared. Normally, the two times should be equal. If the water dispenser experiences a defrosting malfunction, when the defrosting time reaches a preset multiple of the preset defrosting time, the ice maker can be flipped using a stepper motor. After the stepper motor has flipped to the correct position, the switch states of the ice-making limit switch and the defrosting limit switch are obtained. Since the stepper motor is controlling the ice maker to flip to the defrosting position, the defrosting limit switch should normally be closed, while the ice-making limit switch should be open. When the ice-making limit switch and the defrosting limit switch are detected to be in the state corresponding to the above normal condition, it is determined that the water dispenser is in a normal defrosting waiting state, and the ice maker is flipped to the ice-making position by the stepper motor. However, if the ice-making limit switch and the defrosting limit switch are detected to be in the state corresponding to the above normal condition, it is determined that the water dispenser cannot perform a normal pouring operation, and therefore the water dispenser can be controlled to enter a pouring malfunction standby state.

[0154] In this embodiment, when the water dispenser is in a tilt fault standby state, the control method further includes:

[0155] The ice maker is controlled by a stepper motor to flip to the ice removal position. After the stepper motor flips to the correct position, if the ice-making limit switch is closed and the ice removal limit switch is open, the water dispenser is confirmed to be back in the tilting fault ice removal state. If the ice-making limit switch is open or the ice removal limit switch is closed, the ice maker is controlled by a stepper motor to flip to the closed position, and the water dispenser is confirmed to be in the normal ice removal waiting to return to the original position.

[0156] Specifically, after the water dispenser enters the tilting fault standby state, the ice maker can continue to be controlled to rotate. After the stepper motor rotates to the correct position, the status of the ice-making limit switch and the ice-removing limit switch can be further checked to determine whether the ice maker has rotated to the correct position. If the ice-making limit switch is closed and the ice-removing limit switch is open, it indicates a fault in the ice maker's rotation. Therefore, the water dispenser can be controlled to re-enter the tilting fault ice-removing state. Of course, if the ice-making limit switch is open or the ice-removing limit switch is closed, it indicates that the ice-making limit switch and the ice-removing limit switch are working normally. The ice maker cannot rotate to the ice-making position or the ice-removing position because the rotation path is blocked. Therefore, the ice maker can be rotated until the ice-making limit switch is closed, that is, the obstruction in the rotation path is removed. After that, the water dispenser is confirmed to be in the normal ice-removing waiting-to-return state.

[0157] In some embodiments of the present invention, such as Figure 15 As shown, when the water dispenser is in a return-to-position fault de-icing state, the control method also includes the following steps:

[0158] S1501, obtain the ambient temperature when the drinking water equipment is in the return fault de-icing state.

[0159] S1502 controls the de-icing of drinking water equipment.

[0160] S1503, obtain the de-icing time of the drinking water equipment and the preset de-icing time corresponding to the ambient temperature.

[0161] S1504 When the de-icing time is a preset multiple of the preset de-icing time, the ice-making box is controlled by a stepper motor to flip to the ice-making position. After the stepper motor flips to the position, if the ice-making limit switch is in the closed state and the de-icing limit switch is in the open state, the water dispenser is determined to be in standby state.

[0162] S1505 If the ice-making limit switch is in the open state or the ice-removing limit switch is in the closed state, the ice-making box is flipped to the ice-removing position by the stepper motor, and the water drinking equipment is confirmed to be in the return fault standby state.

[0163] Specifically, in this invention, during the de-icing process of the water dispenser, the variable frequency compressor and the refrigerant solenoid valve are both open. This allows the evaporator, which was originally making ice, to generate heat, causing the ice adhering to the evaporator to fall into the ice-making container. The ice-making container is then tilted to pour out the water, and then flipped from the de-icing position back to the ice-making position. In this embodiment, during the de-icing process of the water dispenser, it is necessary to obtain the ambient temperature and the de-icing time of the water dispenser. Then, based on the ambient temperature, a corresponding preset de-icing time can be determined. This preset de-icing time can be stored in the memory and retrieved directly based on the ambient temperature.

[0164] After obtaining the preset defrosting time and the actual defrosting time, the two times can be compared. Normally, the two times should be equal. If the water dispenser experiences a defrosting fault, when the defrosting time reaches a preset multiple of the preset defrosting time, the ice maker can be flipped using a stepper motor. After the stepper motor flips to the correct position, the switch status of the ice-making limit switch and the defrosting limit switch is obtained. Since the stepper motor is controlling the ice maker to flip to the ice-making position, the ice-making limit switch should normally be closed, while the defrosting limit switch should be open. When the ice-making limit switch and the defrosting limit switch are detected to be in the correct positions, the water dispenser can be controlled to enter standby mode. However, if the ice-making limit switch and the defrosting limit switch are not detected to be in the correct positions, it can be determined that the water dispenser cannot perform a normal return operation. Therefore, the ice maker can be flipped to the defrosting position, and the water dispenser can be controlled to enter a return fault standby mode.

[0165] Optionally, the specific value of the preset multiple in the above embodiments can be five times. Of course, it can also be other values ​​in other embodiments, and the specific value of the preset multiple is not limited here.

[0166] In this embodiment, when the water dispenser is in a standby state due to a return-to-position fault, the control method further includes:

[0167] The ice maker is controlled by a stepper motor to rotate to the ice-making position. After the stepper motor rotates to the correct position, if the ice-making limit switch is closed and the ice-removal limit switch is open, the water dispenser is in standby mode. If the ice-making limit switch is open or the ice-removal limit switch is closed, the ice maker is controlled by a stepper motor to rotate until the ice-removal limit switch is closed, and the water dispenser is in a return-to-position fault ice-removal state.

[0168] Specifically, after the water dispenser enters the return-to-position fault standby state, the ice maker can continue to be controlled to rotate. After the stepper motor rotates to the correct position, the states of the ice-making limit switch and the ice-removal limit switch can be further checked to determine whether the ice maker has rotated to the correct position. If the ice-making limit switch is closed and the ice-removal limit switch is open, it means the ice maker has returned to its normal position, and the water dispenser can then be controlled to enter the standby state. Of course, if the ice-making limit switch is open or the ice-removal limit switch is closed, it means there is still some fault in the ice maker's return-to-position operation. Usually, the rotation path of the ice maker is blocked. Therefore, the ice maker can be rotated further until the ice-removal limit switch is closed, that is, the obstruction in the rotation path is removed. After that, the water dispenser can be controlled to re-enter the return-to-position fault ice-removal state.

[0169] It should be noted that the de-icing time in the above embodiments can be determined according to the ambient temperature using Table 1 below, and the speed of the variable frequency compressor can be determined according to the ambient temperature using Table 2 below.

[0170] Table 1

[0171] Ambient temperature T1 (°C) Ice-making time (min) De-icing time (s) T1≤0 0 (Stop ice making) 0 (No action) 0＜T1≤3 0 (Stop ice making) 0 (No action) 3＜T1≤6 0 (Stop ice making) 0 (No action) 6＜T1≤9 300 60 9＜T1≤12 300 45 12＜T1≤15 360 45 15＜T1≤18 390 40 18＜T1≤22 480 30 22＜T1≤25 540 30 25＜T1≤27 660 25 27＜T1≤29 720 25 29＜T1≤31 750 25 31＜T1≤33 780 25 … … … 43＜T1≤48 1260 25 48＜T1 0 (Stop ice making) 0 (No action)

[0172] Table 2

[0173] Ambient temperature T1 (°C) Rotational speed (rpm) 0＜T1≤27 4000 27＜T1≤30 3500 30＜T1≤32 3000 32＜T1≤35 2800 35＜T1≤38 2500 38＜T1≤40 2100 40＜T1 0

[0174] Additionally, see Figure 16 The water dispenser may include a touch display panel 100 and a control panel 200. The touch display panel 100 may include various buttons, such as a boiling water button, a formula preparation button, a room temperature water button, a cold water button, a custom button, a cooling button, an ice-making button, a network button, and a child lock icon button. The touch display panel 100 and the control panel 200 can be connected via UART (Universal Asynchronous Receiver / Transmitter). The control panel 200 is also connected to a variable frequency compressor 201, a refrigerant solenoid valve 202, and a stepper motor 203. The specific functions of the variable frequency compressor 201, the refrigerant solenoid valve 202, and the stepper motor 203 can be found in the descriptions of the relevant embodiments above, and will not be repeated here. Additionally, the touch display panel 100 in this embodiment is equipped with a child lock icon indicator light. When the water dispenser is in sleep mode, the control panel 200 can control the child lock icon indicator light to remain constantly lit for locating the water dispenser. You can also download the corresponding APP on the terminal device, establish a connection with the water dispenser through the APP, and send wake-up commands to the water dispenser through the APP, as well as other control commands, to achieve remote control.

[0175] In summary, the control method for the drinking water equipment in this embodiment of the invention can reduce the manufacturing cost and circuit complexity of the drinking water equipment, improve the product's competitiveness, accurately position the ice maker, reduce the failure rate of the ice-making operation, control the drinking water equipment to smoothly complete the ice-making operation, and improve product safety and user experience.

[0176] Furthermore, the present invention proposes a computer-readable storage medium storing a control program for a drinking water device. When the control program is executed by a processor, it implements any of the control methods for the drinking water device described in the above embodiments.

[0177] The computer-readable storage medium of this invention executes the control program of the drinking water device stored thereon through a processor, which can reduce the manufacturing cost and circuit complexity of the drinking water device and improve the product's competitiveness.

[0178] Figure 17 This is a block diagram of the drinking water device in an embodiment of the present invention.

[0179] Furthermore, such as Figure 17 As shown, the present invention proposes a control device 1000 for a drinking water device. The drinking water device includes a variable frequency booster pump, a variable frequency compressor, a pure water tank, and a water filtration device. The control device 1000 is used to: control the variable frequency booster pump to run when the water level in the pure water tank is lower than a preset water level, so that the water entering the drinking water device flows into the pure water tank after being filtered by the water filtration device; and control the variable frequency compressor to run when the drinking water device performs an ice-making operation, wherein the variable frequency booster pump and the variable frequency compressor operate in a time-sharing manner.

[0180] In some embodiments of the present invention, the water filtration device includes a first filter element and a second filter element. The first filter element includes a first inlet, a first outlet, a second inlet, and a second outlet. The second filter element includes an inlet and an outlet. The drinking water device also includes a main inlet valve and a pure water tank inlet valve. The outlet of the main inlet valve is connected to the first inlet of the first filter element. The inlet of the variable frequency booster pump is connected to the second outlet of the first filter element. The outlet of the variable frequency booster pump is connected to the inlet of the second filter element. The outlet of the second filter element is connected to the second inlet of the first filter element. The first outlet of the first filter element is connected to the inlet of the pure water tank inlet valve. The outlet of the pure water tank inlet valve is connected to the pure water tank.

[0181] In some embodiments of the present invention, the control device 1000 is further configured to: control the main water inlet valve and the pure water tank inlet valve to be in the open state when the variable frequency booster pump is in operation.

[0182] In some embodiments of the present invention, the drinking water device further includes an ice maker, an ice-making limit switch, and an ice-removing limit switch. The ice-making limit switch and the ice-removing limit switch are used to position the ice maker. The control device 1000 is also used to: acquire the status information of the ice-making operation when the variable frequency booster pump is in operation; drive the ice maker according to the status information; acquire the switching status of the ice-making limit switch and the ice-removing limit switch; and adjust the ice maker and the status information according to the switching status of the ice-making limit switch and the ice-removing limit switch.

[0183] In some embodiments of the present invention, the status information includes power-on standby status, power-on de-icing status, standby status, inverter compressor forced protection status, ice-making status, ice-making paused status, de-icing status, return-position fault de-icing status, return-position fault standby status, tilting fault de-icing status, and tilting fault standby status.

[0184] In some embodiments of the present invention, the ice maker is controlled by a stepper motor to rotate in order to cooperate with the water dispenser to complete the ice-making operation. When the ice maker is in the ice-making position, the ice-making limit switch is closed and the ice-removing limit switch is open. When the ice maker is in the ice-removing position, the ice-removing limit switch is closed and the ice-making limit switch is open.

[0185] In some embodiments of the present invention, when the status information of the ice-making operation is a power-on standby state, the control device 1000 is further configured to: obtain the duration of the power-on standby state; and adjust the status information to a power-on de-icing state when the duration is greater than or equal to a first preset duration.

[0186] In some embodiments of the present invention, when the status information is in the power-on de-icing state, the control device 1000 is further configured to: acquire the temperature information of the environment where the ice box is located; determine the de-icing time based on the temperature information; and adjust the status information to standby state after the ice box is flipped back and forth from the ice-making position to the de-icing position a first preset number of times by controlling the stepper motor, wherein the dwell time when flipping to the ice-making position or the de-icing position each time is the de-icing time.

[0187] In some embodiments of the present invention, the drinking water device includes a cold water tank, a cooling switch, and an ice-making switch. The water stored in the cold water tank is used for cooling or ice making. When the drinking water device is in standby mode, the control device 1000 is further configured to: acquire the water storage capacity of the cold water tank, the temperature of the cold water in the cold water tank, the on / off state of the cooling switch, and the on / off state of the ice-making switch; control the stepper motor according to the water storage capacity, the temperature of the cold water, the on / off state of the cooling switch, and the on / off state of the ice-making switch; and control the drinking water device to be in standby mode according to different programs after the stepper motor has completed its execution.

[0188] In some embodiments of the present invention, the standby state includes a cooling shutdown program, a cooling insulation program, a cooling program, a cooling de-icing program, and a cooling de-icing waiting program.

[0189] In some embodiments of the present invention, when the water dispenser is in standby mode, the control device 1000 is further configured to: if it is determined from the water storage volume that the cold water tank is in a water shortage state, control the water dispenser to enter the cooling shutdown program and flip the ice maker to the de-icing position via a stepper motor; if it is determined from the water storage volume that the cold water tank is not in a water shortage state, directly control the water dispenser to enter the cooling shutdown program.

[0190] In some embodiments of the present invention, during the cooling shutdown procedure, the control device 1000 is further configured to: control the ice maker to flip to the ice-making position via a stepper motor and control the water dispenser to enter the cooling program when the cooling switch is closed, the ice-making switch is open, and the temperature of the cold water is higher than the cooling start temperature; control the ice maker to flip to the ice-removing position via a stepper motor and control the water dispenser to enter the cooling and heat preservation program when the cooling switch is closed, the ice-making switch is open, and the temperature of the cold water is lower than or equal to the cooling start temperature; control the ice maker to flip to the ice-making position via a stepper motor and control the water dispenser to enter the cooling program when the cooling switch is open, the ice-making switch is closed, and the temperature of the cold water is higher than the ice-cold start temperature; control the ice maker to flip to the ice-removing position via a stepper motor and control the water dispenser to enter the cooling program when the cooling switch is open, the ice-making switch is closed, and the temperature of the cold water is lower than or equal to the ice-cold start temperature; control the ice maker to flip to the ice-removing position via a stepper motor and control the water dispenser to enter the cooling and heat preservation program when the cooling switch is open and the ice-making switch is open; and control the ice maker to flip to the ice-removing position via a stepper motor when the cooling switch is open and the ice-making switch is open.

[0191] In some embodiments of the present invention, during the refrigeration process, the control device 1000 is further configured to: flip the ice maker to the ice-making position via a stepper motor when the ice-making limit switch is in the open state and the duration of the water dispenser entering the refrigeration process exceeds the second preset duration; and inject water into the ice maker when the ice-making limit switch is in the closed state, the ice-removal limit switch is in the open state and the duration of the water dispenser entering the refrigeration process does not exceed the second preset duration.

[0192] In some embodiments of the present invention, during the refrigeration process, the control device 1000 is further configured to: when the refrigeration switch is closed and the temperature of the cold water is lower than the refrigeration insulation temperature, or when the refrigeration switch is open and the ice-making switch is closed and the temperature of the cold water is lower than the ice-cold insulation temperature, or when the refrigeration switch is open and the ice-making switch is open, if the ice container is not full of ice, control the water dispenser to enter the refrigeration de-icing process and flip the ice container to the de-icing position using a stepper motor; if the ice container is full of ice, control the water dispenser to enter the variable frequency compressor forced protection state, flip the ice container to the de-icing position using a stepper motor, and after a third preset time period, control the water dispenser to enter the refrigeration de-icing waiting process.

[0193] In some embodiments of the present invention, during the refrigeration and de-icing process, the control device 1000 is further configured to: control the ice-making box to rotate back and forth from the ice-making position to the de-icing position a second preset number of times via a stepper motor, and then place it in the ice-making position, and detect the status of the ice-making switch and the ice-making box; when the ice-making switch is closed and the ice-making box is not full of ice, control the water dispenser to enter the ice-making state; if the ice-making limit switch is closed and the de-icing limit switch is open, then add water to the ice-making box; if the ice-making limit switch is open and the de-icing limit switch is closed, then rotate the ice-making box to the de-icing position via a stepper motor; when the ice-making switch is open or the ice-making box is full of ice, rotate the ice-making box to the de-icing position via a stepper motor.

[0194] In some embodiments of the present invention, during the refrigeration and heat preservation process, the control device 1000 is further configured to: when the ice-making switch is off, or when the ice-making switch is closed and the ice container is full of ice, if the refrigeration switch is closed and the temperature of the cold water is higher than the refrigeration start temperature, then when the ice-making limit switch is off, control the ice container to flip to the ice-making position via a stepper motor, and then control the water dispenser to enter the refrigeration process; when the ice-making limit switch is not off, directly control the water dispenser to enter the refrigeration process; if the refrigeration switch is off, control the water dispenser to enter the refrigeration shutdown process, and control the ice container to flip to the ice-removing position via a stepper motor.

[0195] In some embodiments of the present invention, during the refrigeration and de-icing waiting process, the control device 1000 is further configured to: control the water dispenser to enter the refrigeration and de-icing process when the ice container is not full of ice, and control the ice container to flip to the de-icing position via a stepper motor and continue for a fourth preset time; when the ice container is full of ice, if the refrigeration switch is closed and the temperature of the cold water is higher than the refrigeration start temperature, or if the refrigeration switch is open and the ice-making switch is closed and the temperature of the cold water is higher than the ice-cold start temperature, then detect the ice-making limit switch; when the ice-making limit switch is in the open state, control the ice container to flip to the ice-making position via a stepper motor; when the ice-making limit switch is not in the open state, control the water dispenser to enter the refrigeration and heat preservation process, and control the ice container to flip to the de-icing position via a stepper motor.

[0196] In some embodiments of the present invention, when the water dispenser is in the forced protection state of the variable frequency compressor, the control device 1000 is further configured to: control the load of the water dispenser to stop working, and after a fifth preset time period, control the water dispenser to enter the standby state.

[0197] In some embodiments of the present invention, the ice-making state includes an ice-making container tilting procedure, an ice-making container returning procedure, an ice-making container water replenishment procedure, and an ice-making procedure.

[0198] In some embodiments of the present invention, in the ice box tilting procedure, the control device 1000 is further configured to: when the ice box is tilted to the ice-removal position by controlling the stepper motor, if the stepper motor is tilted to the correct position and the ice-removal limit switch is in the off state, then the tilting abnormality count of the ice box is incremented by one; otherwise, the tilting abnormality count is reset to zero; if the stepper motor is tilted to the correct position, then the water dispenser is controlled to enter the ice box return procedure.

[0199] In some embodiments of the present invention, in the ice maker return program, the control device 1000 is further configured to: control the water dispenser to enter the ice maker water replenishment program when the ice-making limit switch is closed, the ice-removal limit switch is open, and the number of tipping anomalies is zero; control the ice maker to flip to the ice-removal position via a stepper motor when the ice-making limit switch is not closed, or the ice-removal limit switch is not open, or the number of tipping anomalies is non-zero; count the ice maker return anomalies when the stepper motor flips to the correct position and the ice-removal limit switch is open; control the water dispenser to enter the ice maker tipping program when both the number of tipping anomalies and the number of ice maker return anomalies do not exceed a third preset number; and control the water dispenser to enter the return fault ice-removal state when either the number of tipping anomalies or the number of ice maker return anomalies exceeds the third preset number.

[0200] In some embodiments of the present invention, in the ice-making box water replenishment process, the control device 1000 is further configured to: fill the ice-making box with water when the ice-making limit switch is closed and the ice-removal limit switch is open, and obtain the water filling time of the ice-making box; when the water filling time reaches the sixth preset time, control the water drinking device to enter the ice-making process.

[0201] In some embodiments of the present invention, during the ice-making process, the control device 1000 is further configured to: when the ice container is full of ice, if both the cooling switch and the ice-making switch are closed and the temperature of the cold water is higher than the cooling start temperature, or if the cooling switch is open and the ice-making switch is closed and the temperature of the cold water is higher than the ice-cold start temperature, then control the water dispenser to enter a standby state; otherwise, control the water dispenser to enter an ice-making pause state; when the water dispenser has been in the ice-making process for a certain period of time, the control device 1000 controls the ice container to flip to the ice-removal position via a stepper motor, and then controls the water dispenser to enter the ice-removal state.

[0202] In some embodiments of the present invention, in the ice-making pause state, the control device 1000 is further configured to: after the water dispenser enters the ice-making pause state for a seventh preset time, if the ice box is not full of ice, control the ice box to flip to the ice-removal position via a stepper motor; if the ice box is full of ice, and at the same time the cooling switch is closed and the temperature of the cold water is higher than the cooling start temperature, or the cooling switch is open and the temperature of the cold water is higher than the ice-cold start temperature, then control the water dispenser to enter the standby state.

[0203] In some embodiments of the present invention, the drinking water equipment further includes an ice-removing load. In the ice-removing state, the control device 1000 is further configured to: when the ice-removing load starts to remove ice and the target ice-removing time is reached, if the ice-removing limit switch is in the open state, count the ice-removing faults, and when the ice-removing fault count reaches the fourth preset number, determine that the drinking water equipment has experienced an ice-removing fault in the ice-making box; if the ice-removing limit switch is not in the open state, the ice-making box is first flipped to the ice-making position by a stepper motor, and then the ice-making box is flipped to the ice-removing position to enter the normal ice-removing waiting return procedure.

[0204] In some embodiments of the present invention, during the normal ice removal waiting return procedure, the control device 1000 is further configured to: control the water dispenser to enter the variable frequency compressor forced protection state and control the ice container to flip to the ice removal position via a stepper motor when the conditions of ice making switch being open or ice making switch being closed and ice container full of ice and cold water temperature being lower than the ice-cold start temperature are met, and the conditions of refrigeration switch being open or refrigeration switch being closed and cold water temperature being lower than the refrigeration start temperature are also met; when the conditions of ice making switch being open or ice making switch being closed and ice container full of ice and cold water temperature being lower than the ice-cold start temperature are not met, or the conditions of refrigeration switch being open or refrigeration switch being closed and cold water temperature being lower than the refrigeration start temperature are not met, control the water dispenser to enter the standby state.

[0205] In some embodiments of the present invention, in the tilting failure de-icing state, the control device 1000 is further configured to: acquire the ambient temperature when the water dispenser is in the tilting failure de-icing state; control the water dispenser to de-ice; acquire the de-icing time of the water dispenser and the preset de-icing time corresponding to the ambient temperature; when the de-icing time is a preset multiple of the preset de-icing time, control the ice maker to flip to the de-icing position via a stepper motor; and after the stepper motor flips to the position, if the ice-making limit switch is in the open state and the de-icing limit switch is in the closed state, then it is determined that the water dispenser is in the normal de-icing waiting return state, and the ice maker is controlled to flip to the ice-making position via a stepper motor; if the ice-making limit switch is in the closed state or the de-icing limit switch is in the open state, then it is determined that the water dispenser is in the tilting failure standby state.

[0206] In some embodiments of the present invention, in the tilt fault standby state, the control device 1000 is further configured to: control the ice maker to flip to the ice removal position via a stepper motor, and after the stepper motor flips to the position, if the ice making limit switch is in the closed state and the ice removal limit switch is in the open state, then determine that the water dispenser is back in the tilt fault ice removal state; if the ice making limit switch is in the open state or the ice removal limit switch is in the closed state, then control the ice maker to flip to the closed state via a stepper motor, and determine that the water dispenser is in the normal ice removal waiting return state.

[0207] In some embodiments of the present invention, in the return-to-position fault de-icing state, the control device 1000 is further configured to: acquire the ambient temperature when the water dispenser is in the return-to-position fault de-icing state; control the water dispenser to de-ic; acquire the de-icing time of the water dispenser and the preset de-icing time corresponding to the ambient temperature; when the de-icing time is a preset multiple of the preset de-icing time, control the ice maker to flip to the ice-making position via a stepper motor, and after the stepper motor flips to the position, if the ice-making limit switch is closed and the de-icing limit switch is open, then determine that the water dispenser is in a standby state; if the ice-making limit switch is open or the de-icing limit switch is closed, control the ice maker to flip to the de-icing position via a stepper motor, and determine that the water dispenser is in the return-to-position fault standby state.

[0208] In some embodiments of the present invention, when the water dispenser is in a standby state due to a return-to-position fault, the control device 1000 is further configured to: control the ice maker to flip to the ice-making position via a stepper motor, and after the stepper motor flips to the position, if the ice-making limit switch is closed and the ice-removal limit switch is open, then determine that the water dispenser is in a standby state; if the ice-making limit switch is open or the ice-removal limit switch is closed, then control the ice maker to flip to the position where the ice-removal limit switch is closed via a stepper motor, and determine that the water dispenser is in a return-to-position fault ice-removal state.

[0209] It should be noted that the specific implementation of the control device of the drinking water equipment in this embodiment can be found in the specific implementation of the control method of the drinking water equipment in the above embodiments. To avoid redundancy, it will not be described again here.

[0210] In summary, the control device for the drinking water equipment in this embodiment of the invention can reduce the manufacturing cost and circuit complexity of the drinking water equipment, improve the product's competitiveness, accurately position the ice maker, reduce the failure rate of the ice-making operation, control the drinking water equipment to smoothly complete the ice-making operation, and improve product safety and user experience.

[0211] Furthermore, such as Figure 17 As shown, the present invention proposes a drinking water device 2000, which includes the control device 1000 of the drinking water device in the above embodiment.

[0212] The drinking water equipment in this embodiment, through the control device of the drinking water equipment in the above embodiment, can reduce the manufacturing cost and circuit complexity of the drinking water equipment, and improve the product's competitiveness.

[0213] In addition, other components and functions of the drinking water equipment in the embodiments of the present invention are known to those skilled in the art, and will not be described in detail here to reduce redundancy.

[0214] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0215] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0216] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0217] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0218] Furthermore, the terms "first," "second," etc., used in the embodiments of this invention are for descriptive purposes only and should not be construed as indicating or implying relative importance, or implicitly specifying the number of technical features indicated in this embodiment. Therefore, features defined with terms such as "first" and "second" in the embodiments of this invention can explicitly or implicitly indicate that the embodiment includes at least one of those features. In the description of this invention, the word "multiple" means at least two or more, such as two, three, four, etc., unless otherwise explicitly specified in the embodiments.

[0219] In this invention, unless otherwise explicitly specified or limited in the embodiments, the terms "installation," "connection," "joining," and "fixing" appearing in the embodiments should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral part; it can also be a mechanical connection, an electrical connection, etc. Of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be 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 based on the specific implementation.

[0220] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0221] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A control method of a water dispensing apparatus, characterized by, The water drinking equipment comprises a variable frequency booster pump, a variable frequency compressor, a pure water tank and a water filtering device, and the control method comprises: When the water level of pure water in the pure water tank is lower than a preset water level, the variable frequency booster pump is controlled to be in an operating state to make the water inlet of the water drinking equipment flow into the pure water tank after being filtered by the water filtering device; When the water drinking equipment performs ice making operation, the variable frequency compressor is controlled to be in an operating state, wherein the variable frequency booster pump and the variable frequency compressor are driven by one variable frequency chip in time-sharing mode; The water filtering device comprises a first filter element and a second filter element, the first filter element comprises a first water inlet, a first water outlet, a second water inlet and a second water outlet, the second filter element comprises a water inlet and a water outlet, the water drinking equipment further comprises a total water inlet valve and a pure water tank water inlet valve, the water outlet of the total water inlet valve is connected with the first water inlet of the first filter element, the water inlet of the variable frequency booster pump is connected with the second water outlet of the first filter element, the water outlet of the variable frequency booster pump is connected with the water inlet of the second filter element, the water outlet of the second filter element is connected with the second water inlet of the first filter element, the first water outlet of the first filter element is connected with the water inlet of the pure water tank water inlet valve, and the water outlet of the pure water tank water inlet valve is connected with the pure water tank; The control method further comprises: When the variable frequency booster pump is in the operating state, the total water inlet valve and the pure water tank water inlet valve are controlled to be in an open state; The water drinking equipment further comprises an ice making box, an ice making limit switch and an ice removing limit switch, the ice making limit switch and the ice removing limit switch are used for positioning the ice making box, and the control method further comprises: When the variable frequency booster pump is controlled to be in the operating state, state information of the ice making operation is acquired; The ice making box is driven according to the state information; Switch states of the ice making limit switch and the ice removing limit switch are acquired; The ice making box and the state information are adjusted according to the switch states of the ice making limit switch and the ice removing limit switch.

2. The control method of the water drinking apparatus according to claim 1, wherein The state information comprises a power-on standby state, a power-on ice removing state, a standby state, a variable frequency compressor forced protection state, an ice making state, an ice making pause state, an ice removing state, a back position fault ice removing state, a back position fault standby state, a dumping fault ice removing state and a dumping fault standby state.

3. The control method of the water dispensing apparatus according to claim 2, wherein The ice making box is controlled to be turned over by a stepping motor to cooperate with the water drinking equipment to complete the ice making operation, wherein when the ice making box is in an ice making position, the ice making limit switch is closed and the ice removing limit switch is opened, and when the ice making box is in an ice removing position, the ice removing limit switch is closed and the ice making limit switch is opened.

4. The control method of the water dispensing apparatus according to claim 3, wherein When the state information of the ice making operation is the power-on standby state, the control method further comprises: A duration of the power-on standby state is acquired; When the duration is greater than or equal to a first preset duration, the state information is adjusted to the power-on ice removing state.

5. The control method of the water dispensing apparatus according to claim 3 or 4, wherein When the state information is the power-on ice removing state, the control method further comprises: Temperature information of an environment in which the ice making box is located is acquired; An ice removing duration is determined according to the temperature information; After the ice-making box is flipped back and forth from the ice-making position to the ice-removing position for a first preset number of times by the stepper motor, the state information is adjusted to the standby state, wherein the length of stay at the ice-making position or the ice-removing position each time is the ice-removing length.

6. The control method of the water drinking apparatus according to claim 3, wherein The water dispensing device comprises a cold water tank, a refrigeration switch and an ice-making switch, and the water stored in the cold water tank is used for refrigeration or ice-making. When the water dispensing device is in the standby state, the control method further comprises: obtaining the water storage amount of the cold water tank, the temperature of the cold water in the cold water tank, the switch state of the refrigeration switch and the switch state of the ice-making switch; controlling the stepper motor according to the water storage amount, the temperature of the cold water, the switch state of the refrigeration switch and the switch state of the ice-making switch; controlling the water dispensing device to be in different procedures in the standby state after the stepper motor executes to the position.

7. The control method of the water dispensing apparatus according to claim 6, wherein The standby state comprises a refrigeration-off procedure, a refrigeration-heat-preservation procedure, a refrigeration procedure, a refrigeration-ice-removing procedure and a refrigeration-ice-removing waiting procedure.

8. The control method of the water dispensing apparatus according to claim 7, wherein When the water dispensing device is in the standby state, the control method further comprises: if it is determined according to the water storage amount that the cold water tank is in a water shortage state, controlling the water dispensing device to enter the refrigeration-off procedure and flipping the ice-making box to the ice-removing position by the stepper motor; if it is determined according to the water storage amount that the cold water tank is not in a water shortage state, directly controlling the water dispensing device to enter the refrigeration-off procedure.

9. The control method of the water dispensing apparatus according to claim 8, wherein In the refrigeration-off procedure, the control method further comprises: when the refrigeration switch is closed, the ice-making switch is opened and the temperature of the cold water is higher than a refrigeration start temperature, flipping the ice-making box to the ice-making position by the stepper motor and controlling the water dispensing device to enter the refrigeration procedure; when the refrigeration switch is closed, the ice-making switch is opened and the temperature of the cold water is lower than or equal to the refrigeration start temperature, flipping the ice-making box to the ice-removing position by the stepper motor and controlling the water dispensing device to enter the refrigeration-heat-preservation procedure; when the refrigeration switch is opened, the ice-making switch is closed and the temperature of the cold water is higher than an ice-cold start temperature, flipping the ice-making box to the ice-making position by the stepper motor and controlling the water dispensing device to enter the refrigeration procedure; when the refrigeration switch is opened, the ice-making switch is closed and the temperature of the cold water is lower than or equal to the ice-cold start temperature, flipping the ice-making box to the ice-removing position by the stepper motor and controlling the water dispensing device to enter the refrigeration-heat-preservation procedure; when the refrigeration switch is opened and the ice-making switch is opened, flipping the ice-making box to the ice-removing position by the stepper motor.

10. The control method of a water dispensing apparatus according to any one of claims 7 to 9, characterized in that, In the refrigeration procedure, the control method further comprises: when the ice-making limit switch is in an open state and the length of time that the water dispensing device enters the refrigeration procedure exceeds a second preset length of time, flipping the ice-making box to the ice-making position by the stepper motor; when the ice-making limit switch is in an open state and the length of time that the water dispensing device enters the refrigeration procedure exceeds a second preset length of time, flipping the ice-making box to the ice-making position by the stepper motor; When the ice-making limit switch is in the closed state, the ice-removing limit switch is in the open state, and the time length of the water dispenser entering the refrigeration program does not exceed the second preset time length, water is injected into the ice-making box.

11. The control method of the water dispensing apparatus according to any one of claims 7 to 9, characterized in that, In the refrigeration program, the control method further comprises: When the refrigeration switch is closed and the temperature of the cold water is lower than the refrigeration temperature preservation temperature, or the refrigeration switch is closed and the ice-making switch is closed and the temperature of the cold water is lower than the ice cold temperature preservation temperature, or the refrigeration switch is closed and the ice-making switch is open, if the ice-making box is not full of ice, the water dispenser enters the ice-removing refrigeration program, and the ice-making box is turned over to the ice-removing position by the stepping motor. If the ice-making box is full of ice, the water dispenser enters the variable frequency compressor forced protection state, the ice-making box is turned over to the ice-removing position by the stepping motor, and after a third preset time length, the water dispenser enters the ice-removing refrigeration waiting program.

12. The control method of the water dispensing apparatus according to any one of claims 7 to 9, characterized in that, In the ice-removing refrigeration program, the control method further comprises: The ice-making box is turned over from the ice-making position to the ice-removing position by the stepping motor for a second preset number of times, and then the ice-making box is in the ice-making position, and the state of the ice-making switch and the ice-making box is detected. When the ice-making switch is closed and the ice-making box is not full of ice, the water dispenser enters the ice-making state, if the ice-making limit switch is in the closed state and the ice-removing limit switch is in the open state, water is injected into the ice-making box, if the ice-making limit switch is in the open state and the ice-removing limit switch is in the closed state, the ice-making box is turned over to the ice-removing position by the stepping motor. When the ice-making switch is open or the ice-making box is full of ice, the ice-making box is turned over to the ice-removing position by the stepping motor.

13. The control method of the water dispensing apparatus according to any one of claims 7 to 9, characterized in that, In the ice-making state, the control method further comprises: When the ice-making switch is open, or the ice-making switch is closed and the ice-making box is full of ice, If the refrigeration switch is closed and the temperature of the cold water is higher than the refrigeration start temperature, when the ice-making limit switch is in the open state, the ice-making box is turned over to the ice-making position by the stepping motor, and then the water dispenser enters the refrigeration program, and when the ice-making limit switch is not in the open state, the water dispenser directly enters the refrigeration program; If the refrigeration switch is open, the water dispenser enters the refrigeration off program, and the ice-making box is turned over to the ice-removing position by the stepping motor.

14. The control method of the water dispensing apparatus according to any one of claims 7 to 9, wherein In the ice-removing refrigeration waiting program, the control method further comprises: When the ice-making box is not full of ice, the water dispenser enters the ice-removing refrigeration program, and the ice-making box is turned over to the ice-removing position by the stepping motor for a fourth preset time length; When the ice-making box is full of ice, if the refrigeration switch is closed and the temperature of the cold water is higher than the refrigeration start temperature, or the refrigeration switch is closed and the ice-making switch is closed and the temperature of the cold water is higher than the ice cold start temperature, the ice-making limit switch is detected; When the ice-making limit switch is in the open state, the ice-making box is flipped to the ice-making position by the stepper motor; When the ice-making limit switch is not in the open state, the water dispenser enters the ice-making and heat preservation program, and the ice-making box is flipped to the ice-removing position by the stepper motor.

15. The method of claim 3, wherein the water dispensing apparatus is a water dispenser. When the water dispenser is in the variable frequency compressor forced protection state, the control method further comprises: The load of the water dispenser is controlled to stop working, and after a fifth preset time, the water dispenser enters the standby state.

16. The method of claim 6, wherein the water dispensing apparatus is a water fountain. The ice-making state includes an ice-making box pouring program, an ice-making box returning program, an ice-making box water supplementing program, and an ice-making program.

17. The method of claim 16, wherein the method further comprises: In the ice-making box pouring program, the control method further comprises: When the ice-making box is flipped to the ice-removing position by the stepper motor, if the stepper motor is flipped to the position and the ice-removing limit switch is in the open state, the number of pouring abnormal times of the ice-making box is increased by one, otherwise the number of pouring abnormal times is reset to zero; if the stepper motor is flipped to the position, the water dispenser enters the ice-making box returning program.

18. The control method of the water drinking apparatus according to claim 17, wherein In the ice-making box returning program, the control method further comprises: When the ice-making limit switch is in the closed state, the ice-removing limit switch is in the open state, and the number of pouring abnormal times is zero, the water dispenser enters the ice-making box water supplementing program; When the ice-making limit switch is not in the closed state, or the ice-removing limit switch is not in the open state, or the number of pouring abnormal times is not zero, the ice-making box is flipped to the ice-removing position by the stepper motor; When the stepper motor is flipped to the position and the ice-removing limit switch is in the open state, the ice-making box returning abnormal counting is performed; When the number of pouring abnormal times and the number of ice-making box returning abnormal times do not exceed a third preset number, the water dispenser enters the ice-making box pouring program; when the number of pouring abnormal times or the number of ice-making box returning abnormal times exceeds the third preset number, the water dispenser enters the returning fault ice-removing state.

19. The method of claim 16, wherein the water dispensing apparatus is a water fountain. In the ice-making box water supplementing program, the control method further comprises: When the ice-making limit switch is in the closed state and the ice-removing limit switch is in the open state, water is injected into the ice-making box, and the water injection time of the ice-making box is obtained; When the water injection time reaches a sixth preset time, the water dispenser enters the ice-making program.

20. The method of claim 16, wherein the water dispensing apparatus is a water fountain. In the ice-making program, the control method further comprises: When the ice-making box is full of ice, if the refrigeration switch and the ice-making switch are both closed and the temperature of the cold water is higher than the refrigeration start temperature, or the refrigeration switch is open and the ice-making switch is closed and the temperature of the cold water is higher than the ice-cold start temperature, the water dispenser enters the standby state, otherwise the water dispenser enters the ice-making pause state; When the time that the water dispenser is in the ice-making program reaches a target ice-making time, the ice-making box is flipped to the ice-removing position by the stepper motor, and then the water dispenser enters the ice-removing state.

21. The method of claim 6, wherein the water dispensing apparatus is a water fountain. In the ice-making pause state, the control method further comprises: After the water dispenser enters the ice-making pause state for a seventh preset time length, if the ice-making box is not full of ice, the ice-making box is controlled to be flipped to the ice-removing position by the stepper motor, If the ice-making box is full of ice, the refrigeration switch is on and the temperature of the cold water is higher than the refrigeration starting temperature, or the refrigeration switch is off and the temperature of the cold water is higher than the ice-cold starting temperature, the water dispenser is controlled to enter the standby state.

22. The method of claim 6, wherein the water dispensing apparatus is a water fountain. The water dispenser further comprises an ice-removing load, and in the ice-removing state, the control method further comprises: When the time for starting ice removal by the ice-removing load reaches a target ice-removing time, if the ice-removing limit switch is in an open state, ice-removing fault counting is performed, and when the ice-removing fault counting reaches a fourth preset number of times, it is determined that the water dispenser has an ice-making box ice-removing fault; If the ice-removing limit switch is not in the open state, the ice-making box is first flipped to the ice-making position by the stepper motor, and then the ice-making box is flipped to the ice-removing position to enter a normal ice-removing waiting return position program.

23. The method of claim 22, wherein the method further comprises: In the normal ice-removing waiting return position program, the control method further comprises: When the ice-making switch is off, or the ice-making switch is on and the ice-making box is full of ice and the temperature of the cold water is lower than the ice-cold starting temperature, and the refrigeration switch is off, or the refrigeration switch is on and the temperature of the cold water is lower than the refrigeration starting temperature, the water dispenser is controlled to enter the variable frequency compressor forced protection state, and the ice-making box is controlled to be flipped to the ice-removing position by the stepper motor; When the ice-making switch is off, or the ice-making switch is on and the ice-making box is full of ice and the temperature of the cold water is lower than the ice-cold starting temperature, or the refrigeration switch is off, or the refrigeration switch is on and the temperature of the cold water is lower than the refrigeration starting temperature, the water dispenser is controlled to enter the standby state.

24. The method of claim 3, wherein the water dispensing apparatus is a water fountain. In the pouring fault ice-removing state, the control method further comprises: Obtaining the ambient temperature when the water dispenser is in the pouring fault ice-removing state; Controlling the water dispenser to perform ice removal; Obtaining the ice-removing time of the water dispenser and the preset ice-removing time corresponding to the ambient temperature; When the ice-removing time is a preset multiple of the preset ice-removing time, the ice-making box is controlled to be flipped to the ice-removing position by the stepper motor, and after the stepper motor is flipped to the position, If the ice-making limit switch is in an open state and the ice-removing limit switch is in a closed state, it is determined that the water dispenser is in a normal ice-removing waiting return position state, and the ice-making box is controlled to be flipped to the ice-making position by the stepper motor; If the ice-making limit switch is in a closed state or the ice-removing limit switch is in an open state, it is determined that the water dispenser is in the pouring fault standby state.

25. The method of claim 3, wherein the water dispensing apparatus is a water fountain. In the pouring fault standby state, the control method further comprises: The ice-making box is controlled to be flipped to the ice-removing position by the stepper motor, and after the stepper motor is flipped to the position, if the ice-making limit switch is in the closed state and the ice-removing limit switch is in the open state, it is determined that the water dispensing device is in the dumping fault ice-removing state again; if the ice-making limit switch is in the open state or the ice-removing limit switch is in the closed state, the ice-making box is controlled to be flipped to the ice-making limit switch in the closed state by the stepping motor, and it is determined that the water dispensing device is in the normal ice-removing state.

26. The method of claim 3, wherein the water dispensing apparatus is a water fountain. In the return fault ice-removing state, the control method further comprises: obtaining the ambient temperature when the water dispensing device is in the return fault ice-removing state; controlling the water dispensing device to remove ice; obtaining the ice-removing time of the water dispensing device and the preset ice-removing time corresponding to the ambient temperature; if the ice-making limit switch is in the closed state and the ice-removing limit switch is in the open state, it is determined that the water dispensing device is in the standby state; if the ice-making limit switch is in the open state or the ice-removing limit switch is in the closed state, the ice-making box is controlled to be flipped to the ice-removing position by the stepping motor, and it is determined that the water dispensing device is in the return fault standby state. In the return fault standby state of the water dispensing device, the control method further comprises:

27. The method of claim 3, wherein the water dispensing apparatus is a water fountain. the ice-making box is controlled to be flipped to the ice-making position by the stepping motor, and after the stepping motor is flipped to the position, if the ice-making limit switch is in the closed state and the ice-removing limit switch is in the open state, it is determined that the water dispensing device is in the standby state; if the ice-making limit switch is in the open state or the ice-removing limit switch is in the closed state, the ice-making box is controlled to be flipped to the ice-removing limit switch in the closed state by the stepping motor, and it is determined that the water dispensing device is in the return fault ice-removing state. A storage medium having a control program of a water dispensing device stored thereon, the control program being executed by a processor to implement the control method of the water dispensing device according to any one of claims 1-27.

28. A computer-readable storage medium, characterized in that, The water dispensing device comprises a variable frequency booster pump, a variable frequency compressor, a pure water tank and a water filtering device, and the control device is configured to: when the water level of pure water in the pure water tank is lower than a preset water level, control the variable frequency booster pump to be in an operating state, so that the water inlet of the water dispensing device flows into the pure water tank after being filtered by the water filtering device; 29. A control device for a drinking water apparatus, characterized in that when the water dispensing device performs ice-making operation, control the variable frequency compressor to be in an operating state, wherein the variable frequency booster pump and the variable frequency compressor are driven by one variable frequency chip in time-sharing mode; ​ The water filtering device comprises a first filter element and a second filter element, the first filter element comprises a first water inlet, a first water outlet, a second water inlet and a second water outlet, the second filter element comprises a water inlet and a water outlet, the water drinking equipment further comprises a total water inlet valve and a pure water tank water inlet valve, the water outlet of the total water inlet valve is connected with the first water inlet of the first filter element, the water inlet of the variable frequency booster pump is connected with the second water outlet of the first filter element, the water outlet of the variable frequency booster pump is connected with the water inlet of the second filter element, the water outlet of the second filter element is connected with the second water inlet of the first filter element, the first water outlet of the first filter element is connected with the water inlet of the pure water tank water inlet valve, and the water outlet of the pure water tank water inlet valve is connected with the pure water tank. The control device is further used for controlling the total water inlet valve and the pure water tank water inlet valve to be in an open state when the variable frequency booster pump is in a running state. The water drinking equipment further comprises an ice making box, an ice making limit switch and an ice removing limit switch, the ice making limit switch and the ice removing limit switch are used for positioning the ice making box, and the control device is further used for: acquiring state information of the ice making operation when the variable frequency booster pump is controlled to be in a running state; driving the ice making box according to the state information; acquiring the switch state of the ice making limit switch and the switch state of the ice removing limit switch; The ice making box and the state information are adjusted according to the switch state of the ice making limit switch and the switch state of the ice removing limit switch.

30. A drinking water apparatus, characterized in that The control device of the water drinking equipment in claim 29. The control device of the water drinking equipment in claim 29.

Images