A mobile air conditioner and a control method of the mobile air conditioner

Abstract

The application discloses a mobile air conditioner and a control method of the mobile air conditioner. After the mobile air conditioner is started, a water beating motor is started after a first preset time. After the water beating motor is started, current environment humidity is obtained after a second preset time. When the current environment humidity reaches a preset environment humidity threshold, current environment temperature, a current power measurement value of the mobile air conditioner, a current upper fan parameter and a current lower fan parameter are obtained. A current power reference value of the mobile air conditioner is obtained according to the current environment temperature, the current environment humidity, the current upper fan parameter and the current lower fan parameter. The rotating speed of the water beating motor is controlled according to the comparison result of the current power measurement value and the current power reference value. The technical scheme of the application can solve the problem that the mobile air conditioner is prone to water full stop under high environment humidity, does not need to increase an additional water level detection device, can reduce the operating power of the mobile air conditioner and improve the operating energy efficiency.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to a portable air conditioner and a control method for the portable air conditioner. Background Technology

[0002] Portable air conditioners are versatile due to their portability, making them suitable for various scenarios such as living rooms, bedrooms, bathrooms, kitchens, and basements. Users frequently change their location during use. When a portable air conditioner is running in cooling mode for an extended period, the evaporator produces a large amount of condensate, which collects in a drip tray located at the bottom of the unit. The industry standard practice is to use a water pump motor to drive a water wheel, which disperses the condensate in the drip tray and sprays it onto the condenser for evaporation, preventing excessive condensate buildup that could cause the unit to overfill and shut down.

[0003] However, traditional solutions typically pre-set the water pump motor speed, keeping it fixed during portable air conditioner cooling operation. This approach only provides optimal control within a certain ambient humidity range; further increases in humidity inevitably lead to the water pump motor shutting off when the water level is too high. While existing technologies offer solutions that adjust the water pump motor speed based on the condensate level in the drip tray to address the water pump motor shutdown issue in high humidity conditions, these solutions require additional water level detection devices and cannot achieve optimal water pumping (i.e., complete evaporation of condensate). This results in excessively high power consumption and low energy efficiency for the portable air conditioner. Summary of the Invention

[0004] The purpose of this invention is to provide a portable air conditioner and a control method for the portable air conditioner, which can solve the problem of easy shutdown due to full water level in high ambient humidity, and does not require the addition of an extra water level detection device. It can also achieve the optimal water filling state through real-time adjustment, thereby reducing the operating power of the portable air conditioner and improving its operating energy efficiency.

[0005] To achieve the above objectives, embodiments of the present invention provide a portable air conditioner, comprising:

[0006] The refrigerant circuit allows the refrigerant to circulate within a loop consisting of a compressor, condenser, throttling device, and evaporator.

[0007] A drip tray is used to collect the condensate produced by the evaporator.

[0008] A water pumping motor and a water pumping wheel connected to the water pumping motor, wherein the water pumping motor is used to drive the water pumping wheel to pump the condensate in the water receiving tray to the condenser;

[0009] Temperature sensor, used to detect ambient temperature;

[0010] Humidity sensor, used to detect ambient humidity;

[0011] Controller, used for:

[0012] After the portable air conditioner is started, the water pump motor is started after a first preset time.

[0013] After the water pump motor is started, the current ambient humidity is obtained after a second preset time.

[0014] When the current ambient humidity reaches the preset ambient humidity threshold, the current ambient temperature, the current power measurement value of the portable air conditioner, the current upper fan parameters, and the current lower fan parameters are obtained.

[0015] The current power reference value of the portable air conditioner is obtained based on the current ambient temperature, the current ambient humidity, the current upper fan parameters, and the current lower fan parameters;

[0016] The speed of the water pump motor is controlled based on the comparison between the current power measurement value and the current power reference value.

[0017] Furthermore, the controller obtains the current power reference value of the portable air conditioner based on the current ambient temperature, the current ambient humidity, the current upper fan parameters, and the current lower fan parameters, specifically including:

[0018] Based on the current upper fan parameters and the current lower fan parameters, a preset operating status table is queried to determine the current operating status of the portable air conditioner, and a power reference value table corresponding to the current operating status is determined; wherein, the operating status table is used to represent the correspondence between the upper fan parameters, the lower fan parameters and the operating status, and the power reference value table is used to represent the correspondence between the ambient temperature, the ambient humidity and the power reference value;

[0019] Based on the established power reference value table, the current power reference value of the portable air conditioner is determined according to the current ambient temperature and the current ambient humidity.

[0020] Furthermore, the upper fan parameters in the operation status table are the upper fan speed settings, and the lower fan parameters are the lower fan speed settings. Each upper fan speed setting and each lower fan speed setting corresponds to an operation status of the portable air conditioner.

[0021] Furthermore, the ambient temperature in the power reference value table includes several preset temperature values, and the ambient humidity includes several preset humidity values. Each preset temperature value and each preset humidity value corresponds to a power reference value. The power reference value is the power value of the portable air conditioner when the condensate is completely evaporated, obtained by adjusting the speed of the water pump motor under the conditions of set ambient temperature, ambient humidity, upper fan parameters, and lower fan parameters.

[0022] Furthermore, the controller, based on a defined power reference value table, determines the current power reference value of the portable air conditioner according to the current ambient temperature and the current ambient humidity, specifically including:

[0023] Determine whether the current ambient temperature and current ambient humidity exist in the determined power reference value table;

[0024] If it exists, the power reference values ​​corresponding to the current ambient temperature and the current ambient humidity in the determined power reference value table are obtained and used as the current power reference values ​​of the portable air conditioner.

[0025] If it does not exist, the power reference values ​​corresponding to the current ambient temperature and the current ambient humidity are calculated using interpolation based on the determined power reference value table, and are used as the current power reference values ​​of the portable air conditioner.

[0026] Furthermore, the controller controls the rotational speed of the water pumping motor based on the comparison result between the current power measurement value and the current power reference value, specifically including:

[0027] The difference between the current power measurement value and the current power reference value is calculated and compared with a first preset threshold and a second preset threshold.

[0028] When the difference reaches the first preset threshold, the speed of the water pump motor is increased by a first preset amount.

[0029] When the difference does not reach the second preset threshold, the speed of the water pump motor is reduced by a second preset amount.

[0030] Furthermore, the first preset threshold is the product of a first preset multiple and the rated operating power of the portable air conditioner, and the second preset threshold is the product of a second preset multiple and the rated operating power of the portable air conditioner, wherein one of the first preset multiple and the second preset multiple is a positive value and the other is a negative value.

[0031] Furthermore, the controller controls the rotational speed of the water pumping motor based on the comparison result between the current power measurement value and the current power reference value, and also includes:

[0032] When the difference is between the first preset threshold and the second preset threshold, the rotation speed of the water pump motor is kept constant.

[0033] Furthermore, the controller is also used for:

[0034] When the current ambient humidity does not reach the preset ambient humidity threshold, the water pump motor is controlled to run at the minimum speed.

[0035] To achieve the above objectives, embodiments of the present invention also provide a control method for a portable air conditioner, applicable to any of the portable air conditioners described above, comprising:

[0036] After the portable air conditioner is started, the water pump motor is started after a first preset time.

[0037] After the water pump motor is started, the current ambient humidity is obtained after a second preset time.

[0038] When the current ambient humidity reaches the preset ambient humidity threshold, the current ambient temperature, the current power measurement value of the portable air conditioner, the current upper fan parameters, and the current lower fan parameters are obtained.

[0039] The current power reference value of the portable air conditioner is obtained based on the current ambient temperature, the current ambient humidity, the current upper fan parameters, and the current lower fan parameters;

[0040] The speed of the water pump motor is controlled based on the comparison between the current power measurement value and the current power reference value.

[0041] Compared with the prior art, the present invention provides a portable air conditioner and a control method for the portable air conditioner. The portable air conditioner includes: a refrigerant circuit, in which the refrigerant circulates in a circuit composed of a compressor, a condenser, a throttling device, and an evaporator; a water tray for receiving condensate produced by the evaporator; a water pump motor and a water pump wheel connected to the water pump motor, the water pump motor driving the water pump wheel to pump the condensate in the water tray to the condenser; a temperature sensor for detecting ambient temperature; a humidity sensor for detecting ambient humidity; and a controller for: starting the water pump motor after the portable air conditioner is started, after a first preset time; acquiring the current ambient humidity after the water pump motor is started, after a second preset time; acquiring the current ambient temperature, the current power measurement value of the portable air conditioner, the current upper fan parameters, and the current lower fan parameters when the current ambient humidity reaches a preset ambient humidity threshold; acquiring the current ambient temperature, the current power measurement value of the portable air conditioner, the current upper fan parameters, and the current lower fan parameters; acquiring the current power reference value of the portable air conditioner based on the current ambient temperature, the current ambient humidity, the current upper fan parameters, and the current lower fan parameters; and controlling the rotation speed of the water pump motor based on the comparison result of the current power measurement value and the current power reference value. This invention controls the speed of the water pump motor by comparing the actual operating power measurement value of the portable air conditioner with the corresponding power reference value. This solves the problem of the air conditioner easily shutting down when the water level is full in high humidity environments. Furthermore, it eliminates the need for an additional water level detection device and can achieve the optimal water pumping state through real-time adjustment, thereby reducing the operating power of the portable air conditioner and improving its energy efficiency. Attached Figure Description

[0042] Figure 1 This is a three-dimensional structural diagram of a portable air conditioner provided in an embodiment of the present invention;

[0043] Figure 2 This is a schematic diagram of the internal structure of a portable air conditioner according to an embodiment of the present invention;

[0044] Figure 3 This is a flowchart illustrating the operation of a controller for a portable air conditioner according to an embodiment of the present invention.

[0045] Figure 4 This is a flowchart illustrating the operation of a controller for a portable air conditioner according to another embodiment of the present invention.

[0046] Figure 5 This is a flowchart illustrating the operation of a controller for a portable air conditioner according to another embodiment of the present invention.

[0047] Figure 6 This is a flowchart illustrating the operation of a controller for a portable air conditioner according to another embodiment of the present invention.

[0048] Figure 7This is a flowchart illustrating the operation of a controller for a portable air conditioner according to another embodiment of the present invention.

[0049] Figure 8 This is a flowchart illustrating the operation of a controller for a portable air conditioner according to another embodiment of the present invention.

[0050] Figure 9 This is a flowchart illustrating a control method for a portable air conditioner according to an embodiment of the present invention;

[0051] Figure 10 This is a flowchart illustrating a control method for a portable air conditioner according to another embodiment of the present invention. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] See Figure 1 and Figure 2 As shown, where, Figure 1 This is a three-dimensional structural diagram of a portable air conditioner according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the internal structure of a portable air conditioner according to an embodiment of the present invention; as shown. Figure 1 As shown, the portable air conditioner 100 includes a housing, the interior of which is defined by an upper space and a lower space. At least an upper heat exchanger is provided in the upper space, and at least a compressor and a lower heat exchanger are provided in the lower space. The compressor is connected to the upper heat exchanger and the lower heat exchanger respectively.

[0054] In this embodiment of the invention, the portable air conditioner 100 includes a refrigerant circuit, in which the refrigerant circulates within a circuit consisting of a compressor, a condenser, a throttling device, and an evaporator. One of the condenser and the evaporator is an upper heat exchanger, and the other is a lower heat exchanger. The compressor compresses the low-temperature, low-pressure refrigerant gas into a high-temperature, high-pressure refrigerant gas. The throttling device throttles the flow of refrigerant. The condenser converts the refrigerant from a low-pressure state to a high-pressure state, thereby releasing heat. The evaporator converts the refrigerant from a high-pressure state to a low-pressure state, thereby absorbing heat.

[0055] It should be noted that the operating mode of the portable air conditioner 100 can be switched by changing the flow direction of the refrigerant. For example, when the portable air conditioner 100 is in heating mode, the refrigerant can flow sequentially through the compressor, the upper heat exchanger, and the lower heat exchanger, and then back to the compressor. At this time, the upper heat exchanger acts as a condenser, and the lower heat exchanger acts as an evaporator. The airflow flows from the air inlet through the upper heat exchanger, exchanges heat with the upper heat exchanger, and then flows back to the room through the air outlet. The upper heat exchanger releases heat into the airflow, thereby increasing the indoor temperature. When the portable air conditioner 100 is in cooling mode, the refrigerant can flow sequentially through the compressor, the lower heat exchanger, and the upper heat exchanger, and then back to the compressor. At this time, the upper heat exchanger acts as an evaporator, and the lower heat exchanger acts as a condenser. The airflow flows from the air inlet through the upper heat exchanger, exchanges heat with the upper heat exchanger, and then flows back to the room through the air outlet. The upper heat exchanger absorbs the heat from the airflow, thereby decreasing the indoor temperature.

[0056] In this embodiment of the invention, the portable air conditioner 100 further includes an upper fan disposed in the upper space and a lower fan disposed in the lower space. The lower fan includes a motor and a fan. The motor is used to drive the fan to rotate, and the lower fan is used to deliver air to the condenser when the fan rotates, so as to regulate the temperature of the condenser.

[0057] It should be noted that portable air conditioners generally have both the outdoor and indoor fans installed in the same unit. The indoor fan is usually located in the upper part of the unit, i.e., in the upper space, and is usually called the upper fan. The upper fan is used to blow air into the upper space. The outdoor fan is usually located in the lower part of the unit, close to the compressor, i.e., in the lower space, and is usually called the lower fan. The lower fan is used to blow air into the lower space to dissipate heat from the compressor and condenser.

[0058] like Figure 2 As shown, in this embodiment of the invention, the portable air conditioner 100 further includes a water receiving tray, a water pumping motor, and a water pumping wheel connected to the water pumping motor. The water receiving tray is used to receive the condensate produced by the evaporator, and the water pumping motor is used to drive the water pumping wheel to rotate so as to pump the condensate in the water receiving tray to the condenser.

[0059] It should be noted that when the condensate and condenser in a portable air conditioner can exchange heat sufficiently, the operating power of the portable air conditioner will be significantly reduced, and the energy efficiency will be improved. The heat exchange efficiency of the condensate and condenser depends on the amount of condensate produced on the evaporator side and the speed of the pump motor. When the amount of condensate produced is large and the speed of the pump motor is low, the heat exchange between the condenser and the atomized condensate is insufficient. On the one hand, this will lead to excessively high operating power and low energy efficiency of the portable air conditioner. On the other hand, the continuous accumulation of condensate in the drip tray can easily cause the drip tray to fill up and trigger an alarm and shutdown. When the amount of condensate produced is small and the speed of the pump motor is high, the condenser and the atomized condensate can exchange heat sufficiently, but this will result in high power consumption and high noise from the pump motor, affecting the user experience.

[0060] To address the aforementioned issues, this invention provides a portable air conditioner that controls the speed of the water pump motor by comparing the measured actual operating power of the portable air conditioner with the corresponding power reference value. This improves operating efficiency and prevents shutdown when the water level is full in high ambient humidity (when condensate production is high), while reducing power consumption and noise in low ambient humidity (when condensate production is low), thus enhancing the user experience.

[0061] like Figure 2 As shown, in this embodiment of the invention, the portable air conditioner 100 further includes a temperature sensor and a humidity sensor. The temperature sensor is used to detect the ambient temperature of the portable air conditioner 100 in real time, and the humidity sensor is used to detect the ambient humidity of the portable air conditioner 100 in real time.

[0062] like Figure 2 As shown, in this embodiment of the invention, the portable air conditioner 100 further includes a controller. The controller is used to control the operation of various components in the portable air conditioner 100, enabling the various components of the portable air conditioner 100 to operate and realize various functions of the portable air conditioner 100. Furthermore, the controller is also used to connect to a temperature sensor, a humidity sensor, and a water pump motor to receive temperature data and humidity data detected by the temperature sensor and humidity sensor, and to control the speed of the water pump motor accordingly based on the received temperature data and humidity data, using the technical solution provided in this embodiment of the invention, so as to solve the technical problem to be solved by this embodiment of the invention and achieve the technical effect that this embodiment of the invention can achieve.

[0063] As one optional embodiment, the controller is used for:

[0064] After the portable air conditioner is started, the water pump motor is started after a first preset time.

[0065] After the water pump motor is started, the current ambient humidity is obtained after a second preset time.

[0066] When the current ambient humidity reaches the preset ambient humidity threshold, the current ambient temperature, the current power measurement value of the portable air conditioner, the current upper fan parameters, and the current lower fan parameters are obtained.

[0067] The current power reference value of the portable air conditioner is obtained based on the current ambient temperature, the current ambient humidity, the current upper fan parameters, and the current lower fan parameters;

[0068] The speed of the water pump motor is controlled based on the comparison between the current power measurement value and the current power reference value.

[0069] Combination Figure 3 The diagram shown is a flowchart of the operation of a controller for a portable air conditioner according to an embodiment of the present invention. In a specific implementation of this embodiment, the controller's operation is as follows: Controlling the portable air conditioner to start ( Figure 3 As shown in step S11), for example, the user turns on the portable air conditioner and sets the fan speed (generally referring to the upper fan speed, which can be set by the user). After receiving the start signal triggered by the user, the portable air conditioner can start and run in the default mode; after the portable air conditioner starts, the water pump motor will start after a first preset time. Figure 3 As shown in step S12), it is understandable that when the portable air conditioner is first started, the amount of condensate produced is relatively small, so there is no need to start the water pump motor. The water pump motor will only start after the water level in the drip tray rises to a certain level. In the initial state, the water pump motor generally runs at the minimum speed. In order to avoid adding an additional water level detection device to detect the water level in real time, the water level can be indicated by the accumulation time of condensate. The first preset time is the accumulation time of condensate when the water level reaches the starting condition of the water pump motor. After the water pump motor starts, after the second preset time, the current ambient humidity of the environment where the portable air conditioner is located is obtained in real time using a humidity sensor. Figure 3 Step S13 is shown, and it is determined whether the current ambient humidity reaches the preset ambient humidity threshold. Figure 3 Step S14 (as shown) involves, for example, determining whether the current ambient humidity is greater than or equal to a preset ambient humidity threshold. If the current ambient humidity is determined to be greater than or equal to the preset ambient humidity threshold (indicating that the ambient humidity is high at this time), then the temperature sensor can be used to obtain the current ambient temperature of the environment where the portable air conditioner is located in real time. At the same time, the current power measurement value, current upper fan parameters, and current lower fan parameters of the portable air conditioner can be obtained. Figure 3Step S15 is shown); then, based on the obtained current ambient temperature, current ambient humidity, current upper fan parameters, and current lower fan parameters, the current power reference value of the portable air conditioner is obtained. Figure 3 As shown in step S16), the obtained current power measurement value and the current power reference value are compared, and the speed of the water pump motor is controlled according to the comparison result of the current power measurement value and the current power reference value. Figure 3 Step S17 is shown.

[0070] It should be noted that the second preset time is the time required for the portable air conditioner to start from the water pump motor until it reaches stable operation. For example, the value range of the second preset time is [3min, 5min].

[0071] It should be noted that the ambient humidity threshold can be set according to actual needs. For example, the ambient humidity threshold is 50% relative humidity, that is, the ambient humidity threshold = 50%RH. Alternatively, it can be set to other values. This embodiment of the invention does not impose specific limitations.

[0072] It should be noted that the power measurement value of the portable air conditioner refers to the total power consumed by the portable air conditioner during operation. This total power value is mainly related to the operating voltage and current of the portable air conditioner (including the total current of the compressor, fan, and control circuit). Therefore, in this embodiment of the invention, the current operating voltage and current total current value of the portable air conditioner can be obtained in real time, and the current power measurement value of the portable air conditioner can be calculated based on the current operating voltage and current total current value. The method of obtaining the current operating voltage and current total current value can be implemented using existing technologies, and this embodiment of the invention does not impose specific limitations.

[0073] It should be noted that the power reference value of the portable air conditioner refers to the power value corresponding to the optimal operating energy efficiency of the portable air conditioner when the water pumping state is optimal (the condensate is completely evaporated). Through theoretical analysis and experimental verification, it can be seen that the power reference value corresponding to the optimal water pumping state of the portable air conditioner in actual operation is mainly affected by the ambient temperature, ambient humidity, upper fan parameters, and lower fan parameters. Therefore, in the embodiments of the present invention, the current power reference value of the portable air conditioner can be determined based on the obtained current ambient temperature, current ambient humidity, current upper fan parameters, and current lower fan parameters.

[0074] This invention provides a portable air conditioner, comprising a refrigerant circuit that circulates the refrigerant within a circuit consisting of a compressor, a condenser, a throttling device, and an evaporator; a water tray for collecting condensate from the evaporator; a water pump motor and a water pump wheel connected to the water pump motor, the water pump motor driving the water pump wheel to pump the condensate from the water tray to the condenser; a temperature sensor and a humidity sensor, the temperature sensor detecting ambient temperature and the humidity sensor detecting ambient humidity; and a controller for: starting the water pump motor after a first preset time following the start of the portable air conditioner; acquiring the current ambient humidity after a second preset time following the start of the water pump motor; acquiring the current ambient temperature, the current power measurement value of the portable air conditioner, the current upper fan parameters, and the current lower fan parameters when the current ambient humidity reaches a preset ambient humidity threshold; acquiring a current reference power value of the portable air conditioner based on the current ambient temperature, current ambient humidity, current upper fan parameters, and current lower fan parameters; and controlling the rotational speed of the water pump motor based on a comparison between the current power measurement value and the current power reference value. This invention controls the speed of the water pump motor by comparing the actual operating power measurement value of the portable air conditioner with the corresponding power reference value. This solves the problem of the air conditioner easily shutting down when the water level is full in high humidity environments. Furthermore, it eliminates the need for an additional water level detection device and can achieve the optimal water pumping state through real-time adjustment, thereby reducing the operating power of the portable air conditioner and improving its energy efficiency.

[0075] As one optional embodiment, the controller obtains the current power reference value of the portable air conditioner based on the current ambient temperature, the current ambient humidity, the current upper fan parameters, and the current lower fan parameters, specifically including:

[0076] Based on the current upper fan parameters and the current lower fan parameters, a preset operating status table is queried to determine the current operating status of the portable air conditioner, and a power reference value table corresponding to the current operating status is determined; wherein, the operating status table is used to represent the correspondence between the upper fan parameters, the lower fan parameters and the operating status, and the power reference value table is used to represent the correspondence between the ambient temperature, the ambient humidity and the power reference value;

[0077] Based on the established power reference value table, the current power reference value of the portable air conditioner is determined according to the current ambient temperature and the current ambient humidity.

[0078] It should be noted that, in this embodiment of the invention, an operating state table is pre-written into the memory of the portable air conditioner. The operating state table is used to represent the correspondence between the upper fan parameters and the lower fan parameters of the portable air conditioner and the operating state of the portable air conditioner. Different upper fan parameters and lower fan parameters correspond to different operating states, as shown in Table 1 below, which is the operating state table written into the memory. The upper fan parameter is represented by R1, and the value of R1 can be a1, a2, ..., and the lower fan parameter is represented by R2, and the value of R2 can be b1, b2, ... For example, when the upper fan parameter R1 = a1 and the lower fan parameter R2 = b1, the operating state of the portable air conditioner is the first operating state.

[0079] Table 1 Operating Status Table

[0080]

[0081] It should be noted that, in this embodiment of the invention, the memory of the portable air conditioner is also pre-written with several power reference value tables, and the number of power reference value tables depends on the number of operating states in Table 1. That is, one operating state corresponds to one power reference value table. The power reference value table is used to represent the correspondence between the ambient temperature and humidity of the environment in which the portable air conditioner is located and the power reference value of the portable air conditioner. Different ambient temperatures and ambient humidity correspond to different power reference values, as shown in Table 2 below, which is the power reference value table corresponding to a certain operating state. The ambient temperature is represented by T, and the value of T can be c1, c2, ..., the ambient humidity is represented by H, and the value of H can be d1, d2, ..., the power reference value is represented by W, and the value of W can be f1, f2, ..., for example, when the ambient temperature T = c1 and the ambient humidity H = d1, the power reference value of the portable air conditioner is f1.

[0082] Table 2 Power Reference Values

[0083] c1 d1 f1 c1 d2 f2 c2 d1 f3 c2 d2 f4 … … …

[0084] It is understandable that the ambient temperature and humidity values ​​included in the different power reference tables corresponding to different operating states are generally the same. However, the power reference values ​​corresponding to the same ambient temperature and humidity values ​​are different in different power reference tables.

[0085] Combination Figure 4The diagram shown is a flowchart of the controller for a portable air conditioner according to another embodiment of the present invention. Based on the above embodiment, in specific implementation of this embodiment, when the controller obtains the current power reference value of the portable air conditioner based on the obtained current ambient temperature, current ambient humidity, current upper fan parameters, and current lower fan parameters, it can first query a preset operating status table based on the obtained current upper fan parameters and current lower fan parameters to determine the current operating status of the portable air conditioner corresponding to the current upper fan parameters and current lower fan parameters. Figure 4 Step S161 is shown, and based on the correspondence between the operating status and the power reference value table, the power reference value table corresponding to the current operating status of the portable air conditioner is further determined. Figure 4 Step S162 (as shown); then, based on the determined power reference value table, the current power reference value of the portable air conditioner is determined by querying the determined power reference value table according to the obtained current ambient temperature and current ambient humidity. Figure 4 (Step S163 shown).

[0086] It should be noted that the power reference value corresponding to the optimal water pumping state of a portable air conditioner during actual operation is mainly affected by the ambient temperature, ambient humidity, upper fan parameters, and lower fan parameters. When the upper fan parameters and lower fan parameters are determined, the corresponding operating state is also determined. After the operating state is determined, the power reference value corresponding to the optimal water pumping state can be further determined by the ambient temperature and ambient humidity under the determined operating state.

[0087] As one optional embodiment, the upper fan parameter in the operation status table is the upper fan speed, and the lower fan parameter is the lower fan speed. Each upper fan speed and each lower fan speed corresponds to an operation status of the portable air conditioner.

[0088] Specifically, in conjunction with the above embodiments, the upper fan parameter is usually the upper fan speed setting, and the lower fan parameter is usually the lower fan speed setting. In the operating status table, the upper fan parameter R1 refers to the upper fan speed setting, and the value of R1 represents different upper fan speed settings. The lower fan parameter R2 refers to the lower fan speed setting, and the value of R2 represents different lower fan speed settings. Furthermore, each upper fan speed setting and each lower fan speed setting corresponds to an operating status of the portable air conditioner.

[0089] For example, assuming the upper fan can have three settings: high, medium, and low, i.e., R1 = upper high, upper medium, and upper low, and the lower fan can have three settings: high, medium, and low, i.e., R2 = lower high, lower medium, and lower low, then the portable air conditioner has nine operating states.

[0090] Understandably, the upper fan speed setting of a portable air conditioner corresponds to its upper fan speed, and the lower fan speed setting corresponds to its lower fan speed. Since the upper and lower fan speeds can be directly read from the memory (which is usually pre-written into the portable air conditioner's memory), the corresponding upper and lower fan speeds can also be determined once the current upper and lower fan speeds are known. Furthermore, by referring to Table 1, the current operating status of the portable air conditioner corresponding to the current upper and lower fan speeds can be determined.

[0091] As one optional embodiment, the ambient temperature in the power reference value table includes several preset temperature values, and the ambient humidity includes several preset humidity values. Each preset temperature value and each preset humidity value corresponds to a power reference value. The power reference value is the power value of the portable air conditioner when the condensate is completely evaporated, obtained by adjusting the speed of the water pump motor under the conditions of set ambient temperature, ambient humidity, upper fan parameters, and lower fan parameters.

[0092] Specifically, in conjunction with the above embodiments, in each power reference value table, the ambient temperature includes several typical preset temperature values, the ambient humidity includes several typical preset humidity values, and each preset temperature value and each preset humidity value corresponds to a power reference value. Furthermore, each power reference value is the power value corresponding to the optimal operating energy efficiency of the portable air conditioner when the condensate is completely evaporated, obtained by continuously adjusting the speed of the water pump motor under the conditions of set ambient temperature, ambient humidity, upper fan parameters and lower fan parameters.

[0093] For example, assuming the ambient temperature can be three typical ambient temperature values, namely 25℃, 30℃, and 35℃, i.e., T = 25℃, 30℃, and 35℃, and the ambient humidity can be five typical ambient humidity values, namely 50%RH, 60%RH, 70%RH, 80%RH, and 90%RH, i.e., H = 50%RH, 60%RH, 70%RH, 80%RH, and 90%RH, then the portable air conditioner has 15 typical power reference values ​​corresponding to different operating states.

[0094] For example, taking the operating state of a portable air conditioner as the first operating state, with an ambient temperature of 25℃ and an ambient humidity of 50%RH as an example, the method for obtaining the power reference value of the portable air conditioner under these conditions is explained as follows: Set the upper fan speed and lower fan speed of the portable air conditioner so that the portable air conditioner is in the first operating state (for example, the upper fan speed is set to high speed and the lower fan speed is set to high speed). Other parameters of the portable air conditioner are operated according to their rated values ​​(once the model of the portable air conditioner is determined, the rated values ​​of each parameter are also determined). The indoor ambient temperature is controlled at 25℃ and the ambient humidity is 50%RH. Under these conditions, by continuously adjusting the speed of the water pump motor, the power reference value under the optimal water pumping state can be obtained. The power reference value under the optimal water pumping state is the power value corresponding to the optimal operating energy efficiency of the portable air conditioner under the condition that the condensate is completely evaporated.

[0095] It should be noted that when adjusting the speed of the water pump motor, it is advisable to initially set it to its minimum speed. At this point, less condensate is pumped onto the condenser. Condensate will continue to accumulate, and the heat exchange between the condenser and the condensate is poor, resulting in high operating power and low energy efficiency for the portable air conditioner. The speed of the water pump motor can then be gradually increased until the condensate produced on the evaporator side under the current operating conditions is completely consumed. This reduces the operating power and improves the energy efficiency of the portable air conditioner. The point at which the condensate is completely consumed is the optimal point for energy efficiency. After this point, further increasing the speed of the water pump motor will not significantly reduce the operating power of the portable air conditioner due to the current dehumidification capacity limitations; instead, it may lead to increased power consumption and noise from the water pump motor.

[0096] As one optional embodiment, the controller determines the current power reference value of the portable air conditioner based on a defined power reference value table, according to the current ambient temperature and the current ambient humidity, specifically including:

[0097] Determine whether the current ambient temperature and current ambient humidity exist in the determined power reference value table;

[0098] If it exists, the power reference values ​​corresponding to the current ambient temperature and the current ambient humidity in the determined power reference value table are obtained and used as the current power reference values ​​of the portable air conditioner.

[0099] If it does not exist, the power reference values ​​corresponding to the current ambient temperature and the current ambient humidity are calculated using interpolation based on the determined power reference value table, and are used as the current power reference values ​​of the portable air conditioner.

[0100] Combination Figure 5The diagram shown is a flowchart of the operation of a controller for a portable air conditioner according to another embodiment of the present invention. Based on the above embodiment, in specific implementation of this embodiment, when the controller determines the current power reference value of the portable air conditioner based on a determined power reference value table and the obtained current ambient temperature and humidity, it can first query the determined power reference value table based on the obtained current ambient temperature and humidity to determine whether the current ambient temperature and humidity (…) are present in the determined power reference value table. Figure 5 (See step S1631); If the current ambient temperature and current ambient humidity exist in the determined power reference value table, the power reference values ​​corresponding to the current ambient temperature and current ambient humidity in the determined power reference value table can be directly obtained, and the power reference value obtained from the determined power reference value table can be used as the current power reference value of the portable air conditioner. Figure 5 Step S1632 (as shown); If the current ambient temperature and current ambient humidity are not found in the determined power reference value table, the power reference value corresponding to the current ambient temperature and current ambient humidity can be calculated using interpolation based on the determined power reference value table, and the calculated power reference value can be used as the current power reference value of the portable air conditioner. Figure 5 (Step S1633 shown).

[0101] Understandably, since each power reference value table only includes a few typical preset temperature values, a few typical preset humidity values, and the power reference value corresponding to each preset temperature and humidity value, it is impossible to list all ambient temperature and humidity values. Therefore, the actual measured current ambient temperature and humidity may not be listed in the power reference value table. In this case, the power reference value corresponding to the current ambient temperature and humidity can be calculated by interpolation based on the existing correspondence between ambient temperature and humidity and power reference values ​​in the power reference value table. The calculation process of the interpolation method can refer to the existing technology, and the embodiments of the present invention are not specifically limited.

[0102] As one optional embodiment, the controller controls the rotational speed of the water pumping motor based on a comparison between the current power measurement value and the current power reference value, specifically including:

[0103] The difference between the current power measurement value and the current power reference value is calculated and compared with a first preset threshold and a second preset threshold.

[0104] When the difference reaches the first preset threshold, the speed of the water pump motor is increased by a first preset amount.

[0105] When the difference does not reach the second preset threshold, the speed of the water pump motor is reduced by a second preset amount.

[0106] Combination Figure 6 The diagram shown is a flowchart of the operation of a controller for a portable air conditioner according to another embodiment of the present invention. Based on the above embodiment, in specific implementation of this embodiment, when the controller controls the speed of the water pump motor according to the comparison result of the obtained current power measurement value and the current power reference value, it can calculate the difference between the current power measurement value and the current power reference value, and compare the calculated difference with a first preset threshold and a second preset threshold respectively. Figure 6 Step S171 (as shown) is used to determine whether the calculated difference reaches the first preset threshold. Figure 6 As shown in step S172), if the calculated difference reaches a first preset threshold, the speed of the water pump motor can be increased by a first preset amount. Figure 6 (See step S173) Otherwise, further determine whether the calculated difference reaches the second preset threshold. Figure 6 In step S174 (as shown), if it is determined that the calculated difference has not reached the second preset threshold, the speed of the water pump motor can be reduced by the second preset amount. Figure 6 (Step S175 shown).

[0107] It should be noted that when the difference obtained from the calculation reaches the first preset threshold, it indicates that the heat exchange between the condensate and the condenser is not sufficient, which will result in higher actual operating power and lower operating efficiency. Therefore, it is necessary to increase the speed of the water pump motor to enhance the heat exchange between the condensate and the condenser, thereby improving the operating efficiency. At the same time, it is necessary to prevent the condensate from continuously accumulating in the water tray, causing the water tray to be full and triggering an alarm shutdown.

[0108] It should be noted that when the difference obtained from the calculation does not reach the second preset threshold, it means that the heat exchange between the condensate and the condenser is sufficient. However, the speed of the water pump motor is too high, resulting in high power consumption and noise. Therefore, it is necessary to reduce the speed of the water pump motor to maintain the operating energy efficiency of the portable air conditioner at a better level while reducing the power consumption and noise of the water pump motor and improving the user experience.

[0109] For example, assuming the current power measurement value is represented by W1, the current power reference value is represented by W2, the first preset threshold is represented by ΔW1, the second preset threshold is represented by ΔW2, the first preset amplitude is represented by Δn1 (for example, Δn1 = 20), and the second preset amplitude is represented by Δn2 (for example, Δn2 = 20), then the difference between the current power measurement value W1 and the current power reference value W2 is calculated as ΔW = W1 - W2. It is then determined whether ΔW ≥ ΔW1 is satisfied. If ΔW ≥ ΔW1 is satisfied, the speed of the water pump motor is increased by Δn1. Otherwise, it is determined whether ΔW ≤ ΔW2 is satisfied. If ΔW ≤ ΔW2 is satisfied, the speed of the water pump motor is decreased by Δn2.

[0110] As one optional embodiment, the first preset threshold is the product of a first preset multiple and the rated operating power of the portable air conditioner, and the second preset threshold is the product of a second preset multiple and the rated operating power of the portable air conditioner, wherein one of the first preset multiple and the second preset multiple is a positive value and the other is a negative value.

[0111] Specifically, in conjunction with the above embodiments, the first preset threshold can be the product of the first preset multiple and the rated operating power of the portable air conditioner. Similarly, the second preset threshold can be the product of the second preset multiple and the rated operating power of the portable air conditioner, and one of the first preset multiple and the second preset multiple is a positive value and the other is a negative value.

[0112] For example, the first preset multiple can be 2%, that is, the first preset threshold can be 2% of the rated operating power of the portable air conditioner. When the rated operating power of the portable air conditioner is 800W, the first preset threshold ΔW1 = 2% * 800 = 16W.

[0113] For example, the second preset multiple can be -2%, that is, the second preset threshold can be -2% of the rated operating power of the portable air conditioner. When the rated operating power of the portable air conditioner is 800W, the second preset threshold ΔW2 = -2% * 800 = -16W.

[0114] As one optional embodiment, the controller controls the rotational speed of the water pumping motor based on a comparison between the current power measurement value and the current power reference value, and further includes:

[0115] When the difference is between the first preset threshold and the second preset threshold, the rotation speed of the water pump motor is kept constant.

[0116] Combination Figure 7The diagram shown is a flowchart of the operation of a controller for a portable air conditioner according to another embodiment of the present invention. Based on the above embodiment, in specific implementation of this embodiment, when the controller controls the speed of the water pump motor according to the comparison result of the obtained current power measurement value and the current power reference value, it can calculate the difference between the current power measurement value and the current power reference value, and compare the calculated difference with a first preset threshold and a second preset threshold respectively. Figure 7 Step S171 (as shown) is used to determine whether the calculated difference reaches the first preset threshold. Figure 7 As shown in step S172), if the calculated difference reaches a first preset threshold, the speed of the water pump motor can be increased by a first preset amount. Figure 7 (See step S173) Otherwise, further determine whether the calculated difference reaches the second preset threshold. Figure 7 In step S174 (as shown), if it is determined that the calculated difference has not reached the second preset threshold, the speed of the water pump motor can be reduced by the second preset amount. Figure 7 (See step S175) Otherwise, further determine whether the calculated difference is between the first preset threshold and the second preset threshold. Figure 7 In step S176 (as shown), if the calculated difference is determined to be between the first preset threshold and the second preset threshold, the rotation speed of the water pump motor can be kept constant. Figure 7 (Step S177 shown).

[0117] It should be noted that when the difference obtained from the determination calculation is between the first preset threshold and the second preset threshold, it means that the heat exchange between the condensate and the condenser is in the best state, that is, the optimal water pumping state has been reached. There is no need to adjust the speed of the water pumping motor. Therefore, the water pumping motor can be controlled to continue to run in the current state.

[0118] For example, assuming the current power measurement value is represented by W1, the current power reference value is represented by W2, the first preset threshold is represented by ΔW1, the second preset threshold is represented by ΔW2, the first preset amplitude is represented by Δn1 (for example, Δn1 = 20), and the second preset amplitude is represented by Δn2 (for example, Δn2 = 20), then the difference between the current power measurement value W1 and the current power reference value W2 is calculated as ΔW = W1 - W2. It is then determined whether ΔW ≥ ΔW1 is satisfied. If ΔW ≥ ΔW1 is satisfied, the speed of the water pump motor is increased by Δn1. Otherwise, it is determined whether ΔW1 > ΔW > ΔW2 is satisfied. If ΔW1 > ΔW > ΔW2 is satisfied, the water pump motor is kept in its current operating state. Otherwise, it is determined whether ΔW ≤ ΔW2 is satisfied. If ΔW ≤ ΔW2 is satisfied, the speed of the water pump motor is decreased by Δn2.

[0119] Understandably, when calculating the difference between the current power measurement value W1 and the current power reference value W2, and comparing the calculated difference with the first preset threshold ΔW1 and the second preset threshold ΔW2 respectively, ΔW = W2 - W1 can also be used for calculation. The corresponding judgment process and the corresponding speed control method of the water pump motor also need to be adapted.

[0120] As one optional embodiment, the controller is further configured to:

[0121] When the current ambient humidity does not reach the preset ambient humidity threshold, the water pump motor is controlled to run at the minimum speed.

[0122] Combination Figure 8 The diagram shown is a flowchart of the controller for a portable air conditioner according to another embodiment of the present invention. Based on the above embodiment, in specific implementation of this embodiment, after determining whether the obtained current ambient humidity has reached a preset ambient humidity threshold, the controller is further configured to: if it is determined that the obtained current ambient humidity has not reached the preset ambient humidity threshold, for example, if it is determined that the obtained current ambient humidity is less than the preset ambient humidity threshold (indicating that the ambient humidity is low at this time), then the water pump motor can be controlled to operate at the minimum speed. Figure 8 As shown in step S18), wait for the ambient humidity of the environment where the portable air conditioner is located to be obtained again to re-determine the ambient humidity (i.e., equivalent to returning). Figure 8 Step S13 is shown.

[0123] It should be noted that when the current ambient humidity is determined to be less than the preset ambient humidity threshold, it means that less condensate is produced on the evaporator side. Therefore, the water pump motor can be controlled to run at the lowest speed, which can meet the requirements of high operating energy efficiency and reduce the power consumption and noise of the water pump motor.

[0124] This invention also provides a control method for a portable air conditioner, see [link to relevant documentation]. Figure 9 The diagram shown is a flowchart illustrating a control method for a portable air conditioner according to an embodiment of the present invention. The method is applicable to the portable air conditioner described in any of the above embodiments. The method is executed by the controller and includes steps S101 to S105:

[0125] Step S101: After the portable air conditioner is started, the water pump motor is started after a first preset time.

[0126] Step S102: After the water pump motor starts, the current ambient humidity is obtained after a second preset time.

[0127] Step S103: When the current ambient humidity reaches the preset ambient humidity threshold, obtain the current ambient temperature, the current power measurement value of the portable air conditioner, the current upper fan parameters, and the current lower fan parameters;

[0128] Step S104: Obtain the current power reference value of the portable air conditioner based on the current ambient temperature, the current ambient humidity, the current upper fan parameters, and the current lower fan parameters;

[0129] Step S105: Control the speed of the water pumping motor based on the comparison result between the current power measurement value and the current power reference value.

[0130] In some embodiments, obtaining the current power reference value of the portable air conditioner based on the current ambient temperature, the current ambient humidity, the current upper fan parameters, and the current lower fan parameters specifically includes:

[0131] Based on the current upper fan parameters and the current lower fan parameters, a preset operating status table is queried to determine the current operating status of the portable air conditioner, and a power reference value table corresponding to the current operating status is determined; wherein, the operating status table is used to represent the correspondence between the upper fan parameters, the lower fan parameters and the operating status, and the power reference value table is used to represent the correspondence between the ambient temperature, the ambient humidity and the power reference value;

[0132] Based on the established power reference value table, the current power reference value of the portable air conditioner is determined according to the current ambient temperature and the current ambient humidity.

[0133] In some embodiments, the upper fan parameter in the operating status table refers to the upper fan speed, and the lower fan parameter refers to the lower fan speed. Each upper fan speed and each lower fan speed corresponds to an operating status of the portable air conditioner.

[0134] In some embodiments, the ambient temperature in the power reference value table includes several preset temperature values, and the ambient humidity includes several preset humidity values. Each preset temperature value and each preset humidity value corresponds to a power reference value. The power reference value is the power value of the portable air conditioner when the condensate is completely evaporated, obtained by adjusting the speed of the water pump motor under the conditions of set ambient temperature, ambient humidity, upper fan parameters, and lower fan parameters.

[0135] In some embodiments, determining the current power reference value of the portable air conditioner based on the current ambient temperature and the current ambient humidity, according to a determined power reference value table, specifically includes:

[0136] Determine whether the current ambient temperature and current ambient humidity exist in the determined power reference value table;

[0137] If it exists, the power reference values ​​corresponding to the current ambient temperature and the current ambient humidity in the determined power reference value table are obtained and used as the current power reference values ​​of the portable air conditioner.

[0138] If it does not exist, the power reference values ​​corresponding to the current ambient temperature and the current ambient humidity are calculated using interpolation based on the determined power reference value table, and are used as the current power reference values ​​of the portable air conditioner.

[0139] See Figure 10 The diagram shown is a flowchart illustrating a control method for a portable air conditioner according to another embodiment of the present invention. In some embodiments, controlling the speed of the water pump motor based on a comparison between the current power measurement value and the current power reference value specifically includes steps S1051 to S1053:

[0140] Step S1051: Calculate the difference between the current power measurement value and the current power reference value, and compare it with the first preset threshold and the second preset threshold;

[0141] Step S1052: When the difference reaches the first preset threshold, control the speed of the water pump motor to increase by a first preset amount;

[0142] Step S1053: When the difference does not reach the second preset threshold, control the speed of the water pump motor to decrease by a second preset amount.

[0143] In some embodiments, the first preset threshold is the product of a first preset multiple and the rated operating power of the portable air conditioner, and the second preset threshold is the product of a second preset multiple and the rated operating power of the portable air conditioner, wherein one of the first preset multiple and the second preset multiple is a positive value and the other is a negative value.

[0144] In some embodiments, controlling the rotational speed of the water pumping motor based on a comparison result between the current power measurement value and the current power reference value further includes:

[0145] When the difference is between the first preset threshold and the second preset threshold, the rotation speed of the water pump motor is kept constant.

[0146] In some embodiments, the method further includes:

[0147] When the current ambient humidity does not reach the preset ambient humidity threshold, the water pump motor is controlled to run at the minimum speed.

[0148] It should be noted that the control method for a portable air conditioner provided in this embodiment of the invention can realize all the working processes of the portable air conditioner described in any of the above embodiments. The specific implementation schemes and technical effects of the method are the same as those of the specific implementation schemes and technical effects of the portable air conditioner described in the above embodiments, and will not be repeated here.

[0149] In summary, the portable air conditioner and its control method provided by this invention include: a refrigerant circuit for circulating refrigerant within a circuit consisting of a compressor, a condenser, a throttling device, and an evaporator; a water tray for collecting condensate from the evaporator; a water pump motor and a water pump wheel connected to the water pump motor, the water pump motor driving the water pump wheel to pump the condensate from the water tray to the condenser; a temperature sensor for detecting ambient temperature; a humidity sensor for detecting ambient humidity; and a controller for: starting the water pump motor after a first preset time following the start of the portable air conditioner; acquiring the current ambient humidity after a second preset time following the start of the water pump motor; acquiring the current ambient temperature, the current power measurement value of the portable air conditioner, the current upper fan parameters, and the current lower fan parameters when the current ambient humidity reaches a preset ambient humidity threshold; acquiring a current power reference value of the portable air conditioner based on the current ambient temperature, current ambient humidity, current upper fan parameters, and current lower fan parameters; and controlling the rotation speed of the water pump motor based on a comparison between the current power measurement value and the current power reference value. This invention controls the speed of the water pump motor by comparing the measured actual operating power of the portable air conditioner with the corresponding power reference value under high ambient humidity. This solves the problem of the air conditioner easily shutting off when the water level is full under high humidity, and eliminates the need for an additional water level detection device. Furthermore, it can achieve optimal water pumping status through real-time adjustment, thereby reducing the operating power of the portable air conditioner and improving its energy efficiency. In addition, by controlling the water pump motor to operate at its minimum speed under low ambient humidity, this invention can reduce the power consumption of the water pump motor and reduce noise, thus improving the user experience.

[0150] The above description is only some embodiments of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A portable air conditioner, characterized in that, include: The refrigerant circuit allows the refrigerant to circulate within a loop consisting of a compressor, condenser, throttling device, and evaporator. A drip tray is used to collect the condensate produced by the evaporator. A water pumping motor and a water pumping wheel connected to the water pumping motor, wherein the water pumping motor is used to drive the water pumping wheel to pump the condensate in the water receiving tray to the condenser; Temperature sensor, used to detect ambient temperature; Humidity sensor, used to detect ambient humidity; Controller, used for: After the portable air conditioner is started, the water pump motor is started after a first preset time. After the water pump motor is started, the current ambient humidity is obtained after a second preset time. When the current ambient humidity reaches the preset ambient humidity threshold, the current ambient temperature, the current power measurement value of the portable air conditioner, the current upper fan parameters, and the current lower fan parameters are obtained. The current power reference value of the portable air conditioner is obtained based on the current ambient temperature, the current ambient humidity, the current upper fan parameters, and the current lower fan parameters; The speed of the water pump motor is controlled based on the comparison between the current power measurement value and the current power reference value.

2. The portable air conditioner as described in claim 1, characterized in that, The controller obtains the current power reference value of the portable air conditioner based on the current ambient temperature, the current ambient humidity, the current upper fan parameters, and the current lower fan parameters, specifically including: Based on the current upper fan parameters and the current lower fan parameters, a preset operating status table is queried to determine the current operating status of the portable air conditioner, and a power reference value table corresponding to the current operating status is determined; wherein, the operating status table is used to represent the correspondence between the upper fan parameters, the lower fan parameters and the operating status, and the power reference value table is used to represent the correspondence between the ambient temperature, the ambient humidity and the power reference value; Based on the established power reference value table, the current power reference value of the portable air conditioner is determined according to the current ambient temperature and the current ambient humidity.

3. The portable air conditioner as described in claim 2, characterized in that, The parameters for the upper fan in the operating status table are the upper fan speed settings, and the parameters for the lower fan are the lower fan speed settings. Each upper fan speed setting and each lower fan speed setting corresponds to an operating status of the portable air conditioner.

4. The portable air conditioner as described in claim 2, characterized in that, The power reference value table includes several preset temperature values ​​and several preset humidity values ​​for the ambient temperature and humidity. Each preset temperature value and each preset humidity value corresponds to a power reference value. The power reference value is the power value of the portable air conditioner when the condensate is completely evaporated, obtained by adjusting the speed of the water pump motor under the conditions of set ambient temperature, ambient humidity, upper fan parameters and lower fan parameters.

5. The portable air conditioner as described in claim 2, characterized in that, The controller determines the current power reference value of the portable air conditioner based on a defined power reference value table, according to the current ambient temperature and the current ambient humidity, specifically including: Determine whether the current ambient temperature and current ambient humidity exist in the determined power reference value table; If it exists, the power reference values ​​corresponding to the current ambient temperature and the current ambient humidity in the determined power reference value table are obtained and used as the current power reference values ​​of the portable air conditioner. If it does not exist, the power reference values ​​corresponding to the current ambient temperature and the current ambient humidity are calculated using interpolation based on the determined power reference value table, and are used as the current power reference values ​​of the portable air conditioner.

6. The portable air conditioner as described in claim 1, characterized in that, The controller controls the speed of the water pumping motor based on a comparison between the current power measurement value and the current power reference value, specifically including: The difference between the current power measurement value and the current power reference value is calculated and compared with a first preset threshold and a second preset threshold. When the difference reaches the first preset threshold, the speed of the water pump motor is increased by a first preset amount. When the difference does not reach the second preset threshold, the speed of the water pump motor is reduced by a second preset amount.

7. The portable air conditioner as described in claim 6, characterized in that, The first preset threshold is the product of a first preset multiple and the rated operating power of the portable air conditioner, and the second preset threshold is the product of a second preset multiple and the rated operating power of the portable air conditioner. One of the first preset multiple and the second preset multiple is a positive value, and the other is a negative value.

8. The portable air conditioner as described in claim 6, characterized in that, The controller controls the speed of the water pumping motor based on a comparison between the current power measurement value and the current power reference value, and further includes: When the difference is between the first preset threshold and the second preset threshold, the rotation speed of the water pump motor is kept constant.

9. The portable air conditioner as described in any one of claims 1 to 8, characterized in that, The controller is also used for: When the current ambient humidity does not reach the preset ambient humidity threshold, the water pump motor is controlled to run at the minimum speed.

10. A control method for a portable air conditioner, characterized in that, The portable air conditioner applicable to any one of claims 1 to 9 includes: After the portable air conditioner is started, the water pump motor is started after a first preset time. After the water pump motor is started, the current ambient humidity is obtained after a second preset time. When the current ambient humidity reaches the preset ambient humidity threshold, the current ambient temperature, the current power measurement value of the portable air conditioner, the current upper fan parameters, and the current lower fan parameters are obtained. The current power reference value of the portable air conditioner is obtained based on the current ambient temperature, the current ambient humidity, the current upper fan parameters, and the current lower fan parameters; The speed of the water pump motor is controlled based on the comparison between the current power measurement value and the current power reference value.

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