Air conditioning apparatus and control method thereof

Abstract

The air conditioner device comprises: an indoor unit shell; a water tank which is detachably arranged in the indoor unit shell, has a manual and automatic water supplement port, and is connected with an external water source through a water inlet pipe, and an electromagnetic valve is arranged on the automatic water supplement port; and a controller which is configured to control the electromagnetic valve to cyclically execute: being turned on for a set on duration and being turned off for a set off duration; simultaneously collecting multiple real-time liquid levels in a single sampling period, and comparing the real-time liquid levels with a set liquid level to respectively accumulate available liquid level quantity and boundary liquid level quantity; when the available liquid level quantity is less than or equal to a set quantity threshold, shortening the set on duration and increasing the set off duration until the available liquid level quantity is less than or equal to the boundary liquid level quantity, and then controlling the electromagnetic valve to be turned off; the real-time liquid level which is lower than the set liquid level is an available liquid level; and the real-time liquid level which is higher than the set liquid level is a boundary liquid level. The application also discloses an air conditioner device control method. The application can accurately control the water level and avoid water overflow.

Description

Technical Field

[0001] This invention belongs to the field of air conditioning equipment technology, and particularly relates to an air conditioning device and a control method for the air conditioning device. Background Technology

[0002] To improve indoor air quality, humidity control is necessary. This can be achieved by installing a humidifier or adding a humidification unit to a commercially available air conditioning unit. Humidification units in air conditioning systems often use a water tank with an outlet valve downstream. Under the control of this valve, water is guided to the humidification element. Airflow, guided by a fan, then passes over the humidification element, thus humidifying the air and adjusting the overall humidity.

[0003] For aesthetic reasons, the water tank is usually concealed within the air conditioner casing. There are two ways to refill the water tank. The first is to remove the tank from the air conditioner casing and fill it with water from another container or directly through a tap. In this case, the user can see the water level and stop adding water at the appropriate point. The second method involves placing the water tank inside the air conditioner casing, with an external water source connected to the tank via an inlet valve. Water is then added to the tank through a pre-installed inlet and piping in the air conditioner casing. In this case, the remaining water level is not visible; a level sensor within the tank detects and indicates whether it is full. When the set level is reached, the inlet valve closes.

[0004] Water tanks are typically designed to accommodate both of these water replenishment methods to prevent replenishment failure. Furthermore, because humidifying the air creates water vapor, water tanks cannot be designed to be completely sealed. If the level sensor is set to full capacity, residual water in the pipes can easily cause overflow; conversely, if the level sensor is set to below full capacity, the tank's capacity cannot be fully utilized, increasing the frequency of water replenishment. Summary of the Invention

[0005] In view of the problem that the liquid level sensor in the prior art has a large inherent error and that the water tank installed in the air conditioner casing is prone to overflow when water is added, one aspect of the present invention designs and provides an air conditioning device.

[0006] An air conditioning device includes: an indoor unit housing; a water tank detachably disposed within the indoor unit housing, the water tank having a manual water inlet and an automatic water inlet, the automatic water inlet being connected to an external water source via an inlet pipe, and a solenoid valve being installed on the inlet pipe; the air conditioning device further includes: a controller configured to control the solenoid valve to cyclically perform the following actions: turning on and maintaining on until the end of a set on duration, turning off and maintaining off until the end of a set off duration; while controlling the solenoid valve to turn on, the controller collects multiple real-time liquid levels within a single sampling period, and compares the real-time liquid levels with a set liquid level to respectively accumulate the number of available liquid levels and the number of boundary liquid levels; when the number of available liquid levels is less than or equal to a set threshold, the controller is configured to shorten the set on duration and increase the set off duration until the number of available liquid levels is less than or equal to the number of boundary liquid levels, and then control the solenoid valve to close; wherein, when the real-time liquid level is lower than the set liquid level, the real-time liquid level is determined to be a usable liquid level; when the real-time liquid level is higher than the set liquid level, it is determined to be a boundary liquid level.

[0007] In a preferred embodiment, the controller is configured to control the solenoid valve to perform the following actions: turn on and maintain on until the end of a first set on duration, and turn off and maintain off until the end of a first set off duration; while controlling the solenoid valve to turn on, the controller continuously collects multiple real-time liquid levels in each of multiple individual sampling periods, and compares the real-time liquid levels with set liquid levels to accumulate the number of available liquid levels and the number of boundary liquid levels in the current sampling period, respectively; when the number of available liquid levels is less than or equal to a set threshold, the controller is configured to control the solenoid valve to perform the following actions: turn on and maintain on until the end of a second set on duration, and turn off and maintain off until the end of a second set off duration; wherein, the first set on duration is greater than the second set on duration, the first set off duration is less than the second set off duration, the sum of the first set on duration and the first set off duration is equal to the set sampling period, and the sum of the second set on duration and the second set off duration is equal to the set sampling period; when the number of available liquid levels is less than or equal to the number of boundary liquid levels, the solenoid valve is controlled to close.

[0008] In a preferred embodiment, the controller is configured to control the solenoid valve to cyclically perform the following actions when the liquid level in the water tank is greater than or equal to a set liquid level: turn on and maintain on until the set on duration ends, and turn off and maintain off until the set off duration ends.

[0009] To facilitate adjustment of control precision, a quantity threshold is set as the product of the number of real-time liquid level samples within a single sampling period and a threshold coefficient, wherein the threshold coefficient is less than 1 and greater than 0.

[0010] Preferably, the real-time liquid level of the water tank is detected by a capacitive liquid level sensor.

[0011] A second aspect of the present invention provides an air conditioning device control method, comprising the following steps:

[0012] The solenoid valve is controlled to perform the following actions in a cycle: turn on and maintain on until the set on time ends, turn off and maintain off until the set off time ends; wherein, the solenoid valve is installed on the water inlet pipe, the water inlet pipe is connected to the automatic water supply port and the external water source, the automatic water supply port is opened on the water tank, and the water tank is detachably installed in the indoor unit housing;

[0013] While controlling the solenoid valve to turn on, multiple real-time liquid levels are collected within a single sampling period;

[0014] Each real-time liquid level is compared with the set liquid level. If the real-time liquid level is lower than the set liquid level, the real-time liquid level is determined to be a usable liquid level; if the real-time liquid level is higher than the set liquid level, it is determined to be a boundary liquid level.

[0015] Total number of available liquid levels;

[0016] Cumulative boundary liquid level count;

[0017] When the number of available liquid levels is less than or equal to the set threshold, the set on-time is shortened and the set off-time is increased until the number of available liquid levels is less than or equal to the boundary liquid level, at which point the solenoid valve is closed.

[0018] In a preferred embodiment, the air conditioning control method includes the following steps:

[0019] The solenoid valve is controlled to perform the following actions: turn on and maintain on until the end of the first set on duration, and turn off and maintain off until the end of the first set off duration;

[0020] While controlling the solenoid valve to turn on, multiple real-time liquid levels are continuously collected within each sampling cycle of multiple individual sampling cycles.

[0021] Compare each real-time liquid level with the set liquid level;

[0022] Total number of available liquid levels;

[0023] Cumulative boundary liquid level count;

[0024] If the available liquid level is greater than the set threshold, the control solenoid valve will cycle through the following actions: turn on and maintain on until the end of the first set on duration, turn off and maintain off until the end of the first set off duration.

[0025] If the available liquid level is less than or equal to a set threshold, the solenoid valve is controlled to perform the following actions: turn on and maintain on until the end of a second set on duration, turn off and maintain off until the end of a second set off duration; wherein, the first set on duration is greater than the second set on duration, the first set off duration is less than the second set off duration, the sum of the first set on duration and the first set off duration is equal to a set sampling period, and the sum of the second set on duration and the second set off duration is equal to a set sampling period;

[0026] If the available liquid level is less than or equal to the boundary liquid level, the control solenoid valve will close.

[0027] In a preferred embodiment, the air conditioning control method includes the following steps:

[0028] Determine if the liquid level in the water tank is greater than or equal to the set liquid level;

[0029] If the liquid level in the water tank is greater than or equal to the set liquid level, the control solenoid valve will cycle through the following actions: turn on and maintain on until the set on duration ends, turn off and maintain off until the set off duration ends.

[0030] Preferably, the threshold number is set as the product of the number of real-time liquid level samples in a single sampling period and the threshold coefficient, wherein the threshold coefficient is less than 1 and greater than 0.

[0031] Preferably, the real-time liquid level of the water tank is detected by a capacitive liquid level sensor.

[0032] Compared with the prior art, the advantages and positive effects of the present invention are:

[0033] Through the above control method, the controller controls the solenoid valve to decrease its on-time and increase its off-time when the available liquid level is less than or equal to a set threshold. This slows down the rise in liquid level and gradually approaches the target level. When the available liquid level first falls below or equals the boundary level, the controller automatically closes the solenoid valve, ensuring the liquid level is precisely maintained at the set level and preventing overflow. If the user manually pulls out the water tank at this point, they will clearly see the precise alignment of the tank level with the set level, demonstrating the product's intelligence.

[0034] Other features and advantages of the present invention will become clearer after reading the detailed embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of the air conditioning device provided by the present invention;

[0037] Figure 2 Figure 1 shows a schematic diagram of the water tank in an air conditioning unit.

[0038] Figure 3 For example Figure 1 The diagram shows the structure of the water inlet pipe in the air conditioning unit.

[0039] Figure 4 This is a first flowchart of the air conditioning device control method provided by the present invention;

[0040] Figure 5 This is a second flowchart of the air conditioning device control method provided by the present invention;

[0041] Figure 6 This is a third flowchart of the air conditioning device control method provided by the present invention. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0043] The terms "first," "second," "third," etc., used in the specification, claims, and drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, represent a non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0044] In this invention, "embodiment" refers to a specific feature, structure, or characteristic described in connection with an embodiment that may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. Those skilled in the art will understand that the embodiments described herein can be combined with other embodiments.

[0045] See Figures 1 to 3As shown, one embodiment of the present invention provides an air conditioning device 10. From a hardware perspective, the air conditioning device 10 includes an indoor unit housing 100, in which conventional indoor heat exchangers, indoor fans, and other refrigeration cycle components are disposed. In addition, a water tank 102 is also disposed in the indoor unit housing 100. The water tank 102 is used to hold clean water. Optionally, the clean water in the water tank 102 is guided to a humidifying element, and the airflow, guided by the fan, blows over the humidifying element, thereby humidifying the airflow and achieving the purpose of air conditioning.

[0046] The water tank 102 has a manual water inlet 104 and an automatic water inlet 106. When the water tank 102 is removed from the indoor unit housing 100, water can be added to the water tank 102 through the manual water inlet 104 using other containers, or directly through a tap. For example, a guide rail 110 is provided on one side of the water tank 102, allowing the water tank 102 to be removed or installed in a drawer-like design. The water tank 102 is provided with several liquid level markings 108, allowing users to clearly see the water level and stop adding water at the appropriate level. When the water tank 102 is installed in the indoor unit housing 100, the liquid level markings 108 are not visible. This concealed design improves the overall aesthetics of the air conditioning unit 10.

[0047] The automatic water replenishment port 106 of the water tank 102 is connected to an external water source through an inlet pipe 112, on which a solenoid valve 114 is installed. The opening and closing of the solenoid valve 114 is controlled by a controller. The controller can be a processing chip located on the main board of the indoor unit; no further limitation is made on the model of the controller here.

[0048] For this type of non-enclosed water tank, to prevent water overflow during replenishment, the controller is configured to control the solenoid valve to cyclically perform the following actions: turn on and maintain on until the end of the set on duration, turn off and maintain off until the end of the set off duration; while controlling the solenoid valve to turn on, the controller collects multiple real-time liquid levels within a single sampling period and compares the real-time liquid levels with the set liquid levels to accumulate the number of available liquid levels and the number of boundary liquid levels respectively; when the number of available liquid levels is less than or equal to the set threshold, the controller is configured to shorten the set on duration and increase the set off duration until the number of available liquid levels is less than or equal to the number of boundary liquid levels, at which point the solenoid valve is controlled to close; wherein, when the real-time liquid level is lower than the set liquid level, the real-time liquid level is determined to be a usable liquid level; when the real-time liquid level is higher than the set liquid level, it is determined to be a boundary liquid level.

[0049] Through the above control method, the controller controls the solenoid valve to decrease its on-time and increase its off-time when the available liquid level is less than or equal to a set threshold. This slows down the rise in liquid level and gradually approaches the target level. When the available liquid level first falls below or equals the boundary level, the controller automatically closes the solenoid valve, ensuring the liquid level is precisely maintained at the set level and preventing overflow. If the user manually pulls out the water tank at this point, they will clearly see the precise alignment of the tank level with the set level, demonstrating the product's intelligence.

[0050] In a preferred embodiment, the controller is configured to control the solenoid valve to perform the following actions: turn on and maintain on until the end of a first set on duration, and turn off and maintain off until the end of a first set off duration;

[0051] While controlling the solenoid valve to open, the controller continuously collects multiple real-time liquid levels within each of multiple individual sampling periods, and compares the real-time liquid levels with set liquid levels to accumulate the number of available liquid levels and the number of boundary liquid levels in the current sampling period. When the number of available liquid levels is less than or equal to a set threshold, the controller is configured to control the solenoid valve to perform the following actions: open and maintain open until the end of a second set open duration, and close and maintain closed until the end of a second set close duration. Wherein, the first set open duration is greater than the second set open duration, the first set close duration is less than the second set close duration, the sum of the first set open duration and the first set close duration equals the set sampling period, and the sum of the second set open duration and the second set close duration equals the set sampling period. When the number of available liquid levels is less than or equal to the number of boundary liquid levels, the solenoid valve is controlled to close.

[0052] Optionally, the real-time liquid level is detected by a capacitive liquid level sensor installed on the water tank. The communication rate between the capacitive liquid level sensor and the indoor unit's main board is 19200 Bps (baud per second), and it can transmit 100 to 200 real-time liquid level signals per second; that is, within a set sampling period, the controller can sample 100 to 200 real-time liquid level signals. In a preferred embodiment of the present invention, the controller is configured to collect 100 real-time liquid level signals within one sampling period, i.e., collect 100 real-time liquid levels. For example, if the set sampling period is 1 second (1s), then the first set on-time can be optionally set to 0.5 seconds (0.5s), and the first set off-time can be optionally set to 0.5 seconds (0.5s); for example, the second set on-time can be 0.2 seconds (0.2s), and the second set off-time can be 0.8 seconds (0.8s).

[0053] In an optional implementation, the quantity threshold is set as the product of the number of real-time liquid level samples within a single sampling period and a threshold coefficient. The threshold coefficient is a settable constant that is less than 1 and greater than 0. For example, if it is set to 0.2, and the threshold coefficient is 0.2 and the controller is configured to collect 100 real-time liquid level signals within one sampling period, the quantity threshold is set to 20. The quantity threshold can be adjusted according to different accuracy requirements.

[0054] In a preferred embodiment, the controller is configured to control the solenoid valve to cyclically perform the following actions when the liquid level in the water tank is greater than or equal to a set liquid level: turn on and maintain on until the end of a set on duration, and turn off and maintain off until the end of a set off duration. For example, manual or conventional automatic water filling methods can be used to fill the water tank to 90% of the maximum liquid level, i.e., the set liquid level. After reaching the set liquid level, the above-described precise control method is employed.

[0055] A second aspect of the present invention provides a method for controlling an air conditioning device, such as... Figure 4 As shown, the air conditioning control method includes multiple steps.

[0056] Start sampling period timing.

[0057] Control the solenoid valve to turn on and maintain it on until the set on time ends.

[0058] After the set on-time expires, the solenoid valve is further controlled to turn off and remain off until the set off-time expires. During the sampling period, the solenoid valve is configured to cyclically perform the above actions.

[0059] On the other hand, multiple real-time liquid levels are collected during the sampling period while controlling the solenoid valve to turn on.

[0060] The real-time liquid level is compared with a set liquid level. For example, the set liquid level can be the full water level.

[0061] If the real-time liquid level is less than or equal to the set liquid level, then the sampled real-time liquid level is the usable liquid level.

[0062] If the real-time liquid level is greater than the set liquid level, the sampled real-time liquid level is the boundary liquid level.

[0063] When the real-time liquid level is an available liquid level, the number of available liquid levels is incremented by 1, and the number of available liquid levels within the cumulative sampling period is accumulated.

[0064] When the real-time liquid level is the boundary liquid level, the number of boundary liquid levels is incremented by 1, and the number of boundary liquid levels within the cumulative sampling period is accumulated.

[0065] Maintain the above control until the end of the sampling cycle. At the end of the sampling cycle, determine whether the number of available liquid levels is less than or equal to the set quantity threshold.

[0066] If the number is less than or equal to the set threshold, then in the next sampling period, the set on-time is shortened and the set off-time is increased, and the number of available liquid levels and the number of boundary liquid levels are calculated again.

[0067] If the number exceeds the set threshold, in the next sampling period, the configuration will keep the set on duration unchanged, keep the set off duration unchanged, and recalculate the number of available liquid levels and the number of boundary liquid levels.

[0068] Repeat the above process until the number of available liquid levels is less than or equal to the number of boundary liquid levels, then close the solenoid valve.

[0069] Through the above control method, when the available liquid level is less than or equal to a set threshold, the solenoid valve tends to reduce its on-time and increase its off-time, slowing down the liquid level rise and gradually approaching the target liquid level in a pulsed manner. When the available liquid level first falls below or equals the boundary liquid level, the solenoid valve closes, ensuring the liquid level is precisely maintained at the set level and preventing overflow. If the user manually pulls out the water tank at this point, they will directly see the precise alignment of the tank level with the set level, demonstrating the product's intelligence.

[0070] In a preferred embodiment, the control method includes, for example: Figure 5 The steps are shown.

[0071] Start sampling period timing.

[0072] Control the solenoid valve to turn on and maintain it on until the first set on time ends.

[0073] After the first set on-time period ends, the solenoid valve is further controlled to turn off and remain off until the first set off-time ends. The sum of the first set on-time and the first set off-time equals the duration of the set sampling period, that is, within the set sampling period, the solenoid valve is on for part of the time and off for part of the time. For example, if the set sampling period is 1 second (1s), then the first set on-time can be set to 0.5 seconds (0.5s), and the first set off-time can be set to 0.5 seconds (0.5s).

[0074] On the other hand, multiple real-time liquid levels are acquired during the sampling period while controlling the solenoid valve to open. Optionally, the real-time liquid level is detected by a capacitive liquid level sensor installed on the water tank. The communication rate between the capacitive liquid level sensor and the indoor unit's main board is 19200 Bps (baud per second), and it can transmit 100 to 200 real-time liquid level signals per second; that is, 100 to 200 real-time liquid level signals can be sampled within a set sampling period. In a preferred embodiment of the invention, it is configured to acquire 100 real-time liquid level signals within one sampling period, i.e., acquire 100 real-time liquid levels.

[0075] Each real-time liquid level is compared with the set liquid level.

[0076] If the real-time liquid level is less than or equal to the set liquid level, then the sampled real-time liquid level is the usable liquid level.

[0077] If the real-time liquid level is greater than the set liquid level, the sampled real-time liquid level is the boundary liquid level.

[0078] When the real-time liquid level is an available liquid level, the number of available liquid levels is incremented by 1, and the cumulative number of available liquid levels within the sampling period is denoted as A1.

[0079] If the real-time liquid level is a boundary liquid level, the number of boundary liquid levels is incremented by 1, and the cumulative number of boundary liquid levels within the sampling period is denoted as C1.

[0080] Alternatively, the following accumulation method can also be used:

[0081] If the real-time liquid level is lower than the set liquid level, the sampled real-time liquid level is the usable liquid level;

[0082] If the real-time liquid level is equal to the set liquid level, then the sampled real-time liquid level is the equivalent liquid level;

[0083] If the real-time liquid level is greater than the set liquid level, the sampled real-time liquid level is the boundary liquid level.

[0084] When the real-time liquid level is an available liquid level, the number of available liquid levels is incremented by 1, and the cumulative number of available liquid levels within the sampling period is denoted as A1.

[0085] When the real-time liquid level is the equivalent liquid level, the number of equivalent liquid levels is incremented by 1, and the number of equivalent liquid levels in the cumulative sampling period is recorded as B1.

[0086] If the real-time liquid level is a boundary liquid level, the number of boundary liquid levels is incremented by 1, and the cumulative number of boundary liquid levels within the sampling period is denoted as C1.

[0087] Maintain the above control until the end of the sampling period. At the end of the sampling period, determine whether the number of available liquid levels, A1, is less than or equal to a set quantity threshold. In an optional implementation, the set quantity threshold is the product of the number of real-time liquid level samples within a single sampling period and a threshold coefficient. The threshold coefficient is a settable constant that is less than 1 and greater than 0. For example, if it is set to 0.2, and the threshold coefficient is 0.2 and the configuration is to collect 100 real-time liquid level signals within one sampling period, the set quantity threshold is 20. The set quantity threshold can be adjusted according to different accuracy requirements.

[0088] If the available liquid level A1 is greater than the set quantity threshold when the sampling cycle ends, the sampling cycle timing will restart, and the first set on duration and the first set off duration will remain unchanged, and the above process will be repeated.

[0089] If the available liquid level A1 is less than or equal to the set quantity threshold at the end of the sampling cycle, then in the next sampling cycle, the solenoid valve is configured to be turned on and kept on until the end of the second set on duration.

[0090] After the second set on-time ends, the solenoid valve is further controlled to turn off and remain off until the second set off-time ends. The second set on-time is shorter than the first set on-time, the first set off-time is longer than the second set off-time, and the sum of the second set on-time and the second set off-time is equal to the sampling period. For example, the second set on-time can be 0.2 seconds (0.2s), and the second set off-time can be 0.8 seconds (0.8s).

[0091] On the other hand, while controlling the solenoid valve to turn on, 100 real-time liquid levels within the sampling period are collected again.

[0092] Each real-time liquid level is compared with the set liquid level.

[0093] If the real-time liquid level is less than or equal to the set liquid level, then the sampled real-time liquid level is the usable liquid level.

[0094] If the real-time liquid level is greater than the set liquid level, the sampled real-time liquid level is the boundary liquid level.

[0095] When the real-time liquid level is an available liquid level, the number of available liquid levels is incremented by 1, and the cumulative number of available liquid levels within the sampling period is denoted as A2.

[0096] If the real-time liquid level is a boundary liquid level, the number of boundary liquid levels is incremented by 1, and the cumulative number of boundary liquid levels within the sampling period is denoted as C2.

[0097] Alternatively, the following accumulation method can also be used:

[0098] If the real-time liquid level is lower than the set liquid level, the sampled real-time liquid level is the usable liquid level;

[0099] If the real-time liquid level is equal to the set liquid level, then the sampled real-time liquid level is the equivalent liquid level;

[0100] If the real-time liquid level is greater than the set liquid level, the sampled real-time liquid level is the boundary liquid level.

[0101] When the real-time liquid level is an available liquid level, the number of available liquid levels is incremented by 1, and the cumulative number of available liquid levels within the sampling period is recorded as A2.

[0102] When the real-time liquid level is the equivalent liquid level, the number of equivalent liquid levels is incremented by 1, and the number of equivalent liquid levels in the cumulative sampling period is recorded as B2.

[0103] If the real-time liquid level is a boundary liquid level, the number of boundary liquid levels is incremented by 1, and the cumulative number of boundary liquid levels within the sampling period is denoted as C2.

[0104] Maintain the above control until the end of the sampling period. At the end of the sampling period, determine whether the number of available liquid levels A2 is less than or equal to the number of boundary liquid levels C2.

[0105] If the available liquid level quantity A2 is less than or equal to the boundary liquid level quantity C2, then the control solenoid valve is closed.

[0106] If the number of available liquid levels A2 is greater than the number of boundary liquid levels C2, the sampling cycle timing will restart, and the second set on-time and the second set off-time will remain unchanged.

[0107] Repeat the above process until the available liquid level quantity A2 is less than or equal to the boundary liquid level quantity C2, then close the solenoid valve.

[0108] When using a traditional float switch to measure liquid level, the water surface is prone to fluctuations due to the inflow of water during the water filling process, causing the liquid level to fluctuate. In addition, the float switch itself has a 3% error, so the maximum error may reach 8%. The maximum error of directly measuring the liquid level using a capacitive liquid level sensor is 3%. However, using the method provided by this invention, the final liquid level error can be kept below 1.5%.

[0109] In a preferred embodiment, such as Figure 6 As shown, first, manually or traditionally replenish water until the water level in the tank reaches the set level (e.g., 90% of the maximum level). Then, determine if the water level in the tank is greater than or equal to the set level. If the water level is greater than or equal to the set level, proceed as follows: Figure 4 and Figure 5 The multiple steps shown can shorten the entire hydration process.

[0110] This application also provides a computer storage medium storing an electronic data interchange computer program that causes an air conditioning device to perform some or all of the steps of any of the methods described in the above method embodiments.

[0111] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0112] In the several embodiments provided in this application, it should be understood that the disclosed apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units or modules described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical or other forms.

[0113] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units. That is, they may be located in one physical space or distributed across multiple network units. Some or all of the units may be selected to achieve the purpose of this embodiment according to actual needs.

[0114] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0115] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by the present invention.

Claims

1. An air conditioning unit, comprising: Indoor unit casing; A water tank is detachably installed in the indoor unit housing. The water tank has a manual water inlet and an automatic water inlet. The automatic water inlet is connected to an external water source through a water inlet pipe, and a solenoid valve is installed on the water inlet pipe. The air conditioning unit is characterized in that it further includes: The controller is configured to control the solenoid valve to cyclically perform the following actions: turn on and maintain on until the end of a set on duration, and turn off and maintain off until the end of a set off duration; While controlling the solenoid valve to turn on, the controller collects multiple real-time liquid levels within a single sampling period and compares the real-time liquid levels with the set liquid levels to accumulate the number of available liquid levels and the number of boundary liquid levels respectively. When the number of available liquid levels is less than or equal to the set number threshold, the controller is configured to shorten the set on-time and increase the set off-time until the number of available liquid levels is less than or equal to the number of boundary liquid levels, and then controls the solenoid valve to turn off. Specifically, when the real-time liquid level is lower than the set liquid level, the real-time liquid level is determined to be an usable liquid level; when the real-time liquid level is higher than the set liquid level, it is determined to be a boundary liquid level.

2. The air conditioning device according to claim 1, characterized in that: The controller is configured to control the solenoid valve to perform the following actions: turn on and maintain on until the end of a first set on duration, and turn off and maintain off until the end of a first set off duration; While controlling the solenoid valve to turn on, the controller continuously collects multiple real-time liquid levels in each of multiple single sampling cycles, and compares the real-time liquid levels with the set liquid levels to accumulate the number of available liquid levels and the number of boundary liquid levels in the current sampling cycle, respectively. When the available liquid level is less than or equal to a set threshold, the controller is configured to control the solenoid valve to perform the following actions: turn on and maintain on until the end of a second set on duration, turn off and maintain off until the end of a second set off duration; wherein, the first set on duration is greater than the second set on duration, the first set off duration is less than the second set off duration, the sum of the first set on duration and the first set off duration is equal to a set sampling period, and the sum of the second set on duration and the second set off duration is equal to the set sampling period; When the number of available liquid levels is less than or equal to the number of boundary liquid levels, the control solenoid valve is closed.

3. The air conditioning device according to claim 1, characterized in that, The controller is configured to control the solenoid valve to perform the following actions cyclically when the liquid level in the water tank is greater than or equal to a set liquid level: turn on and maintain on until the set on duration ends, and turn off and maintain off until the set off duration ends.

4. The air conditioning device according to any one of claims 1 to 3, characterized in that, The quantity threshold is set as the product of the number of real-time liquid level samples in a single sampling period and the threshold coefficient, wherein the threshold coefficient is less than 1 and greater than 0.

5. The air conditioning device according to any one of claims 1 to 3, characterized in that, The real-time liquid level in the water tank is detected by a capacitive liquid level sensor.

6. The air-conditioning apparatus control method characterized by comprising: Includes the following steps: The solenoid valve is controlled to perform the following actions in a cycle: turn on and maintain on until the set on time ends, turn off and maintain off until the set off time ends; wherein, the solenoid valve is installed on the water inlet pipe, the water inlet pipe is connected to the automatic water supply port and the external water source, the automatic water supply port is opened on the water tank, and the water tank is detachably installed in the indoor unit housing; While controlling the solenoid valve to turn on, multiple real-time liquid levels are collected within a single sampling period; Each real-time liquid level is compared with the set liquid level. If the real-time liquid level is lower than the set liquid level, the real-time liquid level is determined to be a usable liquid level; if the real-time liquid level is higher than the set liquid level, it is determined to be a boundary liquid level. Total number of available liquid levels; Cumulative boundary liquid level count; When the number of available liquid levels is less than or equal to the set threshold, the set on-time is shortened and the set off-time is increased until the number of available liquid levels is less than or equal to the boundary liquid level, at which point the solenoid valve is closed.

7. The air conditioner apparatus control method according to claim 6, characterized by, Includes the following steps: The solenoid valve is controlled to perform the following actions: turn on and maintain on until the end of the first set on duration, and turn off and maintain off until the end of the first set off duration; While controlling the solenoid valve to turn on, multiple real-time liquid levels are continuously collected within each sampling cycle of multiple individual sampling cycles. Compare each real-time liquid level with the set liquid level; Total number of available liquid levels; Cumulative boundary liquid level count; If the available liquid level is greater than the set threshold, the control solenoid valve will cycle through the following actions: turn on and maintain on until the end of the first set on duration, turn off and maintain off until the end of the first set off duration. If the available liquid level is less than or equal to a set threshold, the solenoid valve is controlled to perform the following actions: turn on and maintain on until the end of a second set on duration, turn off and maintain off until the end of a second set off duration; wherein, the first set on duration is greater than the second set on duration, the first set off duration is less than the second set off duration, the sum of the first set on duration and the first set off duration is equal to a set sampling period, and the sum of the second set on duration and the second set off duration is equal to a set sampling period; If the available liquid level is less than or equal to the boundary liquid level, the control solenoid valve will close.

8. The air conditioner apparatus control method according to claim 6, characterized by, It also includes the following steps: Determine if the liquid level in the water tank is greater than or equal to the set liquid level; If the liquid level in the water tank is greater than or equal to the set liquid level, the control solenoid valve will cycle through the following actions: turn on and maintain on until the set on duration ends, turn off and maintain off until the set off duration ends.

9. The air conditioning device control method according to any one of claims 6 to 8, characterized in that, The quantity threshold is set as the product of the number of real-time liquid level samples in a single sampling period and the threshold coefficient, wherein the threshold coefficient is less than 1 and greater than 0.

10. The air conditioning device control method according to any one of claims 6 to 8, characterized in that, The real-time liquid level in the water tank is detected by a capacitive liquid level sensor.

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