A control method of a kitchen air conditioner and a kitchen air conditioner

Abstract

The application discloses a control method of a kitchen air conditioner and the kitchen air conditioner. The control method comprises the following steps: when the water level in a water storage tank reaches a preset starting water level, operating an atomization unit to deliver condensate water to a heat dissipation area of a condenser, and atomizing and discharging the condensate water by using the heat dissipated by the condenser. The operation of the atomization unit comprises determining a target atomization control parameter of the atomization unit based on an indoor environment parameter, and operating the atomization unit according to the target atomization control parameter. The control method of the kitchen air conditioner and the kitchen air conditioner provided by the application can realize the effect of no condensate water discharge of the kitchen air conditioner by spraying the condensate water to the surface of the condenser through the atomization unit when the water level in the water storage tank reaches the preset starting water level, and atomizing and discharging the condensate water by using the heat dissipated by the condenser. Further, the target atomization control parameter is regulated in combination with the indoor environment parameter, so that the atomization capacity and the condensate water generation rate are accurately matched, and the reliable operation of the kitchen air conditioner is ensured.

Description

Technical Field

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

[0002] As an important device for improving the kitchen cooking environment, kitchen air conditioners produce a certain amount of condensate in their evaporators during operation due to their cooling and dehumidifying function. Most existing kitchen air conditioners typically handle this condensate by directly discharging it through an external wall opening to the outside. However, this traditional method has the following significant drawbacks: 1. Openings in the exterior walls not only damage the integrity of the building facade, but long-term drainage can also lead to water seepage, stain accumulation, and even structural erosion on the wall surface, affecting the building's aesthetics and durability.

[0003] 2. The external drainage of condensate requires the laying of additional drainage pipes and precise drilling of holes in the exterior wall, which increases the installation process and construction difficulty. It is particularly unsuitable for older residential buildings or integrated kitchen cabinet environments where installation space is strictly limited.

[0004] 3. Drainage pipes may leak due to blockage, aging, or loose connections, causing dampness and damage to interior walls and cabinets, and repairs and troubleshooting are relatively difficult. Summary of the Invention

[0005] One objective of this application is to solve or at least alleviate some or all of the aforementioned problems. Therefore, one objective of this application is to provide a control method and a kitchen air conditioner that achieves zero condensate discharge, eliminates the need for drainage pipes, reduces construction difficulty, and improves the condenser's heat dissipation capacity.

[0006] According to one aspect of the present invention, a control method for a kitchen air conditioner is provided, the kitchen air conditioner comprising a condenser, a water storage tank for collecting condensate, and an atomizing unit for discharging the condensate in atomized form; The control method includes: Obtain the water level in the water storage tank; When the water level reaches the preset start-up water level, the atomizing unit is activated to transport the condensate to the heat dissipation area of ​​the condenser, and the heat emitted by the condenser is used to atomize and discharge the condensate. Operating the atomizing unit includes: Obtain indoor environmental parameters; The target atomization control parameters of the atomization unit are determined based on the indoor environmental parameters. The atomization unit operates according to the target atomization control parameters.

[0007] Optionally, the indoor environmental parameters include indoor temperature; the target atomization control parameters include target atomization speed; Determining the target atomization control parameters of the atomization unit based on the indoor environmental parameters includes: Obtain the indoor temperature; The initial atomization rate is determined based on the indoor temperature. The target atomization speed is determined based on the initial atomization speed.

[0008] Optionally, determining the initial atomization rate based on the indoor temperature includes: If the indoor temperature is lower than or equal to the first indoor temperature threshold, then the initial atomization rate is determined to be the first atomization rate. If the indoor temperature is higher than the first indoor temperature threshold and lower than or equal to the second indoor temperature threshold, then the initial atomization rate is determined to be the second atomization rate. If the indoor temperature is higher than the second indoor temperature threshold, then the initial atomization rate is determined to be the third atomization rate; Wherein, the first indoor temperature threshold is lower than the second indoor temperature threshold, the first atomization speed is lower than the second atomization speed, and the second atomization speed is lower than the third atomization speed.

[0009] Optionally, determining the target atomization rate based on the initial atomization rate includes: Obtain the temperature of the condenser; If the temperature of the condenser is higher than the condenser temperature threshold, the initial atomization rate is increased to obtain the target atomization rate.

[0010] Optionally, determining the target atomization rate based on the initial atomization rate includes: Obtain the back pressure of the flue; The target atomization speed is determined based on the initial atomization speed and the flue back pressure.

[0011] Optionally, determining the target atomization rate based on the initial atomization rate and the flue back pressure includes: If the back pressure of the flue is less than or equal to the first back pressure threshold of the flue, then the target atomization speed is determined to be equal to the initial atomization speed. If the flue back pressure is greater than the first flue back pressure threshold and less than or equal to the second flue back pressure threshold, then according to formula V 目标 =V 初 The target atomization rate is determined by ×(1+K×P); If the flue back pressure is greater than the second flue back pressure threshold, then according to formula V 目标 =V初 The target atomization rate is determined by ×(1+K×P2); Among them, V 目标 V is the target atomization velocity. 初 Where is the initial atomization speed, K is the back pressure correction coefficient, P is the flue back pressure, and P2 is the second flue back pressure threshold.

[0012] Optionally, when determining the target atomization rate based on the initial atomization rate and the flue back pressure, the method further includes: When the back pressure of the flue exceeds the second back pressure threshold of the flue, a high-pressure warning for the flue is triggered.

[0013] Optionally, the indoor environmental parameters include indoor temperature; the target atomization control parameters include target atomization frequency; Determining the target atomization control parameters of the atomization unit based on the indoor environmental parameters includes: The target atomization frequency is determined based on the indoor temperature.

[0014] Optionally, determining the target atomization frequency based on the indoor temperature includes: If the indoor temperature is lower than or equal to the first indoor temperature threshold, then the target atomization frequency is determined to be the first atomization frequency; If the indoor temperature is higher than the first indoor temperature threshold and lower than or equal to the second indoor temperature threshold, then the target atomization frequency is determined to be the second atomization frequency. If the indoor temperature is higher than the second indoor temperature threshold, then the target atomization frequency is determined to be the third atomization frequency; Wherein, the first indoor temperature threshold is lower than the second indoor temperature threshold, the first atomization frequency is lower than the second atomization frequency, and the second atomization frequency is lower than the third atomization frequency.

[0015] According to another aspect of the present invention, a kitchen air conditioner is provided, comprising: Evaporator; A water storage tank is used to collect the condensate produced by the evaporator; Atomizing unit is used to atomize and discharge the condensate. A water level detection device is installed inside the water storage tank to detect the water level in the water storage tank; Condenser; The control module is communicatively connected to the atomizing unit and the water level detection element, and is used to execute any of the control methods described in the first aspect.

[0016] Optionally, the atomizing unit includes a water pump, a spray assembly, and a heat exhaust fan; The water pump is used to extract the condensate from the water storage tank to the spray assembly; The spray assembly is used to spray the condensate onto the condenser; The exhaust fan is located on one side of the condenser.

[0017] Optionally, the kitchen air conditioner also includes an indoor environmental parameter sensor that is communicatively connected to the control module, the indoor environmental parameter sensor being used to detect indoor environmental parameters.

[0018] The kitchen air conditioner control method and kitchen air conditioner provided in this invention recover condensate water through a water storage tank. When the water level in the storage tank reaches the preset start-up water level, the condensate water is sprayed onto the condenser surface through an atomizing unit. The heat emitted by the condenser atomizes and discharges the condensate water, achieving a condensate-free discharge effect for the kitchen air conditioner. This avoids the need for openings in external walls, pipe installation, and potential leaks, significantly improving installation convenience and aesthetics. Simultaneously, the condensate water absorbs heat from the condenser during evaporation, effectively improving the condenser's heat dissipation efficiency and reducing power consumption, resulting in energy-saving and environmentally friendly practical effects. Furthermore, by adjusting the target atomization control parameters in conjunction with indoor environmental parameters, the atomization capacity is precisely matched with the condensate water generation rate and condenser heat load, preventing insufficient atomization leading to condensate water accumulation or excessive atomization causing energy waste, thus ensuring the reliable operation of the kitchen air conditioner.

[0019] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A flowchart illustrating a kitchen air conditioner control method provided in an embodiment of the present invention; Figure 2 A schematic diagram of the structure of a kitchen air conditioner provided in an embodiment of the present invention; Figure 3 A flowchart illustrating another method for controlling a kitchen air conditioner provided in an embodiment of the present invention; Figure 4 A flowchart illustrating another method for controlling a kitchen air conditioner provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of another kitchen air conditioner provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of another kitchen air conditioner provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of an atomizing unit provided in an embodiment of the present invention. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. 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 should fall within the scope of protection of the present invention.

[0023] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0024] Figure 1 This is a flowchart illustrating a kitchen air conditioner control method provided in an embodiment of the present invention. Figure 2 A schematic diagram of the structure of a kitchen air conditioner provided in an embodiment of the present invention is shown below. Figure 1 and Figure 2 As shown, this embodiment of the invention provides a control method for a kitchen air conditioner, wherein the kitchen air conditioner includes a condenser 12, a water storage tank 13 for collecting condensate, and an atomizing unit 100 for discharging condensate.

[0025] Control methods include: S11. Obtain the water level in the water storage tank.

[0026] Specifically, the evaporator of a kitchen air conditioner is a key component of the refrigeration cycle, used to cool the air flowing through it. During this process, water vapor in the air condenses upon contact with the condenser, producing condensate.

[0027] Water storage tank 13 is a container used to collect and temporarily store condensate.

[0028] The water storage tank 13 is equipped with a water level detection device. By periodically or in real time reading the signal from the water level detection device, the current water level of the condensate in the water storage tank 13 can be obtained.

[0029] S12. When the water level reaches the preset start-up water level, the atomization unit is activated to deliver the condensate to the heat dissipation area of ​​the condenser, and the heat emitted by the condenser is used to atomize and discharge the condensate.

[0030] Specifically, the current water level is compared with a preset starting water level.

[0031] The preset starting water level is a threshold pre-stored in the control module.

[0032] In some embodiments, the preset start-up water level corresponds to 50% to 80% of the effective volume of the water storage tank 13, and can be further set to 50% to 60%. For example, if the total volume of the water storage tank 13 is 500mL, the preset start-up water level can be set to the liquid level height corresponding to a volume of 250mL to 400mL at the corresponding water level. Further, the preset start-up water level can be set to the liquid level height corresponding to a volume of 300mL (i.e., 60% of the total volume), or the liquid level height corresponding to a volume of 400mL (i.e., 80% of the total volume), which can avoid frequent start-up and shutdown of the atomizing unit 100 and prevent the water level from overflowing due to excessively high water levels.

[0033] Furthermore, when it is determined that the current water level has reached or exceeded the preset start-up water level, the atomizing unit 100 is started and operated.

[0034] Among them, the atomizing unit 100 is a functional module whose core function is to convert liquid condensate into fine water mist or water vapor and discharge it, thereby achieving zero condensate discharge.

[0035] Specifically, when the atomizing unit 100 is running, it extracts the condensate from the water storage tank 13 and pumps it to the heat dissipation area of ​​the condenser 12 through the delivery pipe.

[0036] The heat dissipation area of ​​the condenser 12 refers to the effective heat exchange surface of the condenser 12 that dissipates heat to the outside during operation and its adjacent space. Specifically, it refers to the outer surface of its fin assembly and the space range that allows the condensate to have sufficient thermal contact with the fins. This heat dissipation area is the main part of the condenser 12 that dissipates the heat carried by the refrigerant to the surrounding air, and its temperature is significantly higher than the ambient temperature.

[0037] In some embodiments, the heat dissipation area of ​​the condenser 12 may include at least one of the following areas: The condenser fin surface, consisting of a large number of aluminum foil or copper fins and internal refrigerant pipes, is the main location where heat is transferred from the refrigerant to the air.

[0038] The flow channel gap between the fins is the passage through which air passes under the drive of the exhaust fan.

[0039] The high-temperature airflow zone outside the condenser (such as the space 41 0 to 50 mm away from the fin surface) has a significantly higher air temperature than the ambient temperature, providing sufficient heat energy to promote the evaporation of condensate.

[0040] In this embodiment, the atomizing unit 100 sprays or guides the condensed water directly to the heat dissipation area, such as the fin surface, so that the condensed water can quickly absorb heat and evaporate into water vapor (i.e., atomized condensed water). The water vapor is discharged outdoors through the exhaust system or enters the flue, thereby achieving a self-evaporation effect without liquid water residue.

[0041] In some embodiments, the above process can continue until the water level in the water tank 13 drops to a level where the atomizing unit 100 can no longer effectively draw out the condensate in the water tank 13, at which point the atomizing unit 100 stops operating, completing one drainage cycle.

[0042] It should be noted that the above atomization refers to the process in which condensed water is discharged in gaseous form after being heated and evaporated, and does not rely on mechanical or ultrasonic means to break up droplets.

[0043] Furthermore, the atomizing unit is operated, including: Obtain indoor environmental parameters.

[0044] The target atomization control parameters of the atomization unit are determined based on indoor environmental parameters.

[0045] The atomization unit operates according to the target atomization control parameters.

[0046] Specifically, in some embodiments, in order to meet the needs of simplified design and reduced costs, fixed atomization control parameters (such as fixed atomization speed, atomization amount and atomization frequency, etc.) may be used to operate the atomization unit.

[0047] However, further research by the inventors revealed that the kitchen environment has its own unique characteristics, such as drastic fluctuations in indoor temperature and humidity (e.g., a sudden increase in indoor temperature and humidity during cooking). Under such conditions, the rate of condensate generation and the heat dissipation capacity of the condenser change dynamically. Therefore, the above-mentioned fixed atomization control parameter operating mode has the following drawbacks: 1. The inability to match the dynamically changing condensate production with the condenser's heat exchange requirements can easily lead to insufficient atomization and condensate accumulation, or excessive atomization and energy waste.

[0048] 2. Failure to optimize atomization control parameters in conjunction with environmental factors leads to unstable condenser heat exchange efficiency, affecting the air conditioning cooling effect.

[0049] Therefore, in this embodiment, indoor environmental parameters can be obtained through sensors installed on the kitchen air conditioner unit.

[0050] Among them, indoor environmental parameters refer to physical quantities that reflect the thermal and humidity state of the indoor space where the kitchen air conditioner is located.

[0051] Furthermore, based on the acquired indoor environmental parameters, the most suitable target atomization control parameters are determined through a pre-stored mapping table or algorithm model.

[0052] Among them, the target atomization control parameters refer to the set of optimized control commands used to drive the operation of the atomization unit, calculated based on the current environmental conditions and system requirements.

[0053] Specifically, the target atomization control parameters include a combination of one or more of the following parameters: The target atomization volume refers to the volume of condensate delivered to the condenser, measured in mL.

[0054] The target atomization rate refers to the volume of condensed water delivered to the condenser per unit time, measured in mL / min.

[0055] The target atomization frequency refers to the number of start-stop cycles of the atomizing unit per unit time, which is applicable to intermittent operation strategies; for example, if it runs for 2 minutes every 15 minutes, the target atomization frequency is 4 times / hour.

[0056] In this embodiment, the atomization unit is not simply started with fixed atomization control parameters. Instead, it is finely controlled based on target atomization control parameters calculated from indoor environmental parameters. For example, when the indoor temperature is high, it means the air conditioning cooling load is high, the evaporator produces condensate at a fast rate, and the condenser itself has high heat dissipation requirements. In this case, a larger target atomization amount or a higher target atomization speed can be determined to avoid insufficient atomization amount leading to condensate accumulation in the water storage tank and preventing the risk of overflow. Conversely, when the indoor temperature is low, a smaller target atomization amount or a higher target atomization speed can be used to operate the atomization unit to avoid excessive atomization amount preventing condensate from being fully evaporated by the condenser, which would not only result in ineffective power consumption but may also cause mold growth or electrical safety hazards due to liquid water retention.

[0057] Among them, the target atomization control parameters are automatically adjusted according to real-time indoor environmental parameters. During the peak cooking period with high temperature and humidity, the atomization ability is enhanced to prevent condensate accumulation. When the environment is mild, the power operation is reduced to avoid energy waste. This adaptive regulation helps to stabilize and improve the heat exchange efficiency of the condenser and ensures the continuous and stable cooling effect of the air conditioner.

[0058] In summary, the kitchen air conditioner control method provided by this invention recovers condensate from a water storage tank. When the water level in the tank reaches a preset start-up level, the condensate is sprayed onto the condenser surface via an atomizing unit. The heat dissipated by the condenser atomizes and discharges the condensate, achieving a condensate-free discharge effect for the kitchen air conditioner. This avoids the need for openings in external walls, pipe installation, and potential leaks, significantly improving installation convenience and aesthetics. Simultaneously, the condensate absorbs heat from the condenser during evaporation, effectively improving the condenser's heat dissipation efficiency and reducing power consumption, resulting in energy-saving and environmentally friendly practical effects. Furthermore, by adjusting the target atomization control parameters in conjunction with indoor environmental parameters, the atomization capacity is precisely matched with the condensate generation rate and condenser heat load, preventing insufficient atomization leading to condensate accumulation or excessive atomization causing energy waste and ensuring reliable operation of the kitchen air conditioner.

[0059] Optional, indoor environmental parameters include indoor temperature; target atomization control parameters include target atomization rate.

[0060] The target atomization control parameters for the atomization unit are determined based on indoor environmental parameters, including: Obtain the indoor temperature.

[0061] The initial atomization rate is determined based on the indoor temperature.

[0062] The target atomization speed is determined based on the initial atomization speed.

[0063] Specifically, indoor temperature refers to the temperature of the air inside the kitchen, measured in degrees Celsius (°C). Indoor temperature can be collected in real time by an indoor temperature sensor located at the air conditioner's return air vent, inside the casing, or in the remote control.

[0064] The higher the indoor temperature, the greater the temperature difference between the evaporator surface and the air, the faster the condensate formation rate, and the higher the condenser load may be, affecting the availability of waste heat.

[0065] In this embodiment, the current indoor temperature can be obtained by an indoor temperature sensor installed in the return air vent of the kitchen air conditioner or inside the casing. Then, the initial atomization speed is determined according to the preset indoor temperature-target atomization speed mapping relationship.

[0066] The atomization speed refers to the working intensity of the atomization unit, which is physically reflected in the flow rate of condensate delivered per unit time (e.g., mL / min). It can be achieved by adjusting the drive voltage, PWM duty cycle, or speed of the water pump that draws condensate in the atomization unit.

[0067] Furthermore, based on the initial atomization speed, other correction factors can be optionally superimposed to obtain the target atomization speed, and the final execution command is generated based on the target atomization speed.

[0068] Specifically, in some embodiments, if no other modifications are introduced, the target atomization rate is equal to the initial atomization rate, and the atomization unit will be operated directly at the initial atomization rate determined based on the room temperature.

[0069] In some embodiments, the target atomization rate can be determined by correcting the initial atomization rate at least once to achieve better performance and reliability in more complex and variable environments.

[0070] In this embodiment, the easily measurable indoor temperature is used as the primary control variable, greatly simplifying the control algorithm and reducing cost and complexity. Simultaneously, the atomization speed can be increased when the indoor temperature rises. In scenarios where room temperature rises sharply, such as during summer or peak cooking seasons, the system can respond instantly by enhancing atomization to strengthen the spray cooling of the condenser. This effectively prevents compressor efficiency degradation, power consumption surges, and even overheat protection shutdowns caused by excessively high condensing pressure, significantly improving the air conditioner's cooling capacity, operational stability, and system reliability under extreme high-temperature conditions. Conversely, when the indoor temperature is low (e.g., at night or during non-cooking periods), the atomization speed is reduced to automatically adjust to a lower level that matches the current low-temperature load, reducing power consumption and achieving energy-saving operation.

[0071] Furthermore, by determining the initial atomization speed and selectively modifying it, the system can reserve advanced functions such as integrated condenser overheat protection and flue self-adaptation, which can reduce the risk of excessive or insufficient atomization under extreme conditions (such as high temperature and high humidity weather) and help adapt to more complex and changeable environments.

[0072] Optionally, the initial atomization rate can be determined based on the indoor temperature, including: If the indoor temperature is lower than or equal to the first indoor temperature threshold, the initial atomization speed is determined as the first atomization speed.

[0073] If the indoor temperature is higher than the first indoor temperature threshold and lower than or equal to the second indoor temperature threshold, then the initial atomization rate is determined to be the second atomization rate.

[0074] If the indoor temperature is higher than the second indoor temperature threshold, the initial atomization rate is determined to be the third atomization rate.

[0075] Among them, the first indoor temperature threshold is lower than the second indoor temperature threshold, the first atomization speed is lower than the second atomization speed, and the second atomization speed is lower than the third atomization speed.

[0076] In this embodiment, in order to further improve the accuracy of control and the determinism of execution, the initial atomization speed is determined based on the indoor temperature. This can be achieved by using a segmented threshold judgment method. By presetting a clear indoor temperature limit and a corresponding initial atomization speed level, continuous changes in indoor temperature can be transformed into discrete and better control actions, making the control logic clearer and easier to implement.

[0077] Specifically, two indoor temperature thresholds are pre-stored, namely a first indoor temperature threshold T1 and a second indoor temperature threshold T2, and T1 < T2. For example, T1 can be set to 30℃ and T2 can be set to 40℃, but it is not limited to these.

[0078] Simultaneously, three initial atomization speed settings are preset, each corresponding to a temperature range: a first atomization speed V1, a second atomization speed V2, and a third atomization speed V3, where V1 < V2 < V3. For example, the first atomization speed V1 corresponds to the lower range of 0 ml / min to 10 ml / min; the second atomization speed V2 corresponds to the medium range of 100 ml / min to 200 ml / min; and the third atomization speed V3 corresponds to the higher range of 200 ml / min to 300 ml / min, but is not limited to these ranges.

[0079] Furthermore, the current indoor temperature T is obtained by an indoor temperature sensor installed at the return air vent or inside the casing of the kitchen air conditioner. 内 Then, the indoor temperature T 内 The initial atomization rate is determined by comparing it with the preset first indoor temperature threshold T1 and the second indoor temperature threshold T2.

[0080] Among them, when the real-time indoor temperature T is obtained 内 Satisfy T 内 ≤T1 (e.g., T) 内 When the temperature is ≤30℃, the system is considered to be in a low heat load state. At this time, the cooling demand of the air conditioner and the heat dissipation pressure of the condenser are both relatively low, and the condensate production rate is usually also relatively slow. Therefore, the initial atomization rate is determined to be the first atomization rate V1 (e.g., within the range of 0 to 100 mL / min, for example, taking the middle value of 50 mL / min or dynamically adjusted according to the water level), so as to maintain basic condensate treatment and auxiliary heat dissipation with low energy consumption.

[0081] When the real-time indoor temperature T 内 Satisfying T1 < T 内 ≤T2 (e.g., 30℃ < T) 内When the temperature is ≤40℃, the system is considered to be under a medium heat load, which corresponds to common cooking activities or a summer afternoon kitchen environment. At this time, the system requires stronger cooling capacity. Therefore, the initial atomization rate is set to a higher second atomization rate V2 (e.g., in the range of 100–200 mL / min, for example, taking the midpoint 150 mL / min or dynamically adjusted according to the water level) to enhance the condenser's heat dissipation and match the increased load.

[0082] When the real-time indoor temperature T within the range meets T 内 >T2(T 内 When the temperature exceeds 40℃, the system is considered to be under high heat load or extreme conditions (e.g., prolonged high-heat stir-frying, direct sunlight in the afternoon during summer without ventilation). At this time, the system faces significant heat dissipation pressure and the risk of condensate overflow. Therefore, the initial atomization rate should be set to the highest third atomization rate, V3 (e.g., within the range of 200–300 mL / min, for example, taking the midpoint 250 mL / min or dynamically adjusted according to the water level) to initiate maximum atomization intensity. This achieves powerful cooling of the condenser and rapid treatment of condensate, ensuring stable system operation and cooling efficiency under extreme conditions.

[0083] It is understandable that higher indoor temperatures mean a greater cooling load on the air conditioner, more severe condensation on the evaporator surface, and a faster rate of condensate formation. Therefore, in this embodiment, a graded control strategy is used to increase the atomization rate when the indoor temperature rises, which enhances the condensate evaporation capacity and prevents the water level in the storage tank from rising rapidly and causing overflow.

[0084] Meanwhile, this embodiment employs explicit threshold comparison and speed mapping, which can be directly implemented in a low-cost microcontroller (MCU) through simple comparison and judgment statements, without the need for complex arithmetic libraries. The drive parameters (such as PWM values) corresponding to the initial atomization speed speed can be embedded in the program, making system debugging and production line calibration extremely simple, significantly reducing software development difficulty and production testing costs. Furthermore, at any given indoor temperature, the system has one and only one explicit initial atomization speed speed corresponding to it, resulting in highly consistent and predictable control behavior.

[0085] It should be noted that the values ​​of the first indoor temperature threshold T1 and the second indoor temperature threshold T2, as well as the ranges of the first atomization speed V1, the second atomization speed V2, and the third atomization speed V3 mentioned above, are only examples. In actual applications, they can be calibrated according to hardware parameters such as compressor power, condenser size, and water tank volume.

[0086] Optionally, the target atomization rate can be determined based on the initial atomization rate, including: Obtain the temperature of the condenser.

[0087] If the temperature of the condenser is higher than the condenser temperature threshold, the initial atomization rate is increased to obtain the target atomization rate.

[0088] After determining the initial atomization rate, it can be further corrected based on the real-time thermal state of the condenser to obtain the final target atomization rate, thereby achieving protection and performance optimization of the condenser.

[0089] Specifically, the temperature Tc of the condenser is obtained. The temperature Tc of the condenser can be collected in real time by a condenser temperature sensor (such as an NTC thermistor) installed on the surface of the condenser fins or on the refrigerant pipeline.

[0090] The condenser temperature Tc is compared with a pre-set condenser temperature threshold Tth. The condenser temperature threshold Tth can be set according to the heat resistance of the condenser material and the system design requirements, for example, Tth=55℃, but it is not limited to this.

[0091] If Tc ≤ Tth, it indicates that the condenser is operating within a safe and efficient temperature range. In this case, no additional protection is required, so the target atomization rate can be directly equal to the initial atomization rate, or equal to the initial atomization rate corrected for other factors (such as flue back pressure).

[0092] If Tc > Tth, the condenser is determined to be in an overheated state, triggering the condenser overheat protection logic. That is, the initial atomization speed is immediately corrected. At this time, the atomization intensity is increased based on the initial atomization speed to obtain the target atomization speed. This correction aims to quickly cool the condenser by enhancing atomization (i.e. enhancing spray evaporative cooling).

[0093] In some embodiments, the correction method can be V 目标 =V 初 ×(1+A). Where A is a positive correction coefficient (e.g., 0.1, representing a 10% increase). A can be a fixed value or a variable that increases as the difference Tc-Tth increases.

[0094] In some embodiments, if Tc > Tth, the target atomization rate can be set to 110% to 120% of the initial atomization rate, that is, to increase the initial atomization rate by a certain percentage (e.g., 10% to 20%), or to float up one level within the corresponding initial atomization rate range (e.g., from 150 mL / min to 250 mL / min), but is not limited to this.

[0095] In some embodiments, if Tc > Tth, then A = B × (Tc - Tth), where B is a proportionality coefficient or gain coefficient, and its physical meaning is the atomization rate correction rate corresponding to a unit over-temperature. The unit of B can be °C. -1The B value determines the strength of the correction. A larger B value results in a more sensitive response to condenser overheating, significantly increasing atomization speed for powerful cooling even with slight overheating. This is suitable for kitchen air conditioners that are sensitive to condenser temperature, or scenarios where rapid cooling is the primary goal. A smaller B value results in a gradual increase in correction with the overheating amplitude. This is suitable for applications where condenser temperature fluctuations are allowed within a certain range, or where smooth control and avoidance of sudden power changes are desired. This embodiment of the invention does not impose specific limitations on this aspect.

[0096] It should be noted that, in order to avoid excessive spraying that would prevent the condensate from evaporating completely, the increase in spraying speed can be adjusted in conjunction with parameters such as the current exhaust fan speed and ambient humidity to ensure that the evaporation capacity matches the water supply. This embodiment of the invention does not impose specific limitations on this.

[0097] It is understandable that excessively high condenser temperatures may trigger compressor overload protection and a sharp drop in refrigeration efficiency. Long-term operation may also damage the compressor's lifespan. In this embodiment, when the condenser temperature is too high, the initial atomization speed is increased, thereby increasing the amount of condensate delivered to the condenser's heat dissipation area per unit time. This utilizes the heat absorption effect of water evaporation to assist in cooling the condenser. This measure helps to reduce the condensation temperature, maintain refrigeration efficiency within the optimal range, and improve the energy efficiency ratio of the refrigeration system. At the same time, it prevents the compressor from frequently starting and stopping due to high-pressure protection, extending the service life of the heat exchanger and surrounding electronic components.

[0098] Optionally, the target atomization rate can be determined based on the initial atomization rate, including: Obtain the back pressure of the flue.

[0099] The target atomization velocity is determined based on the initial atomization velocity and the back pressure of the flue.

[0100] In order to ensure that the water vapor generated by atomization can be effectively and reliably discharged under various complex exhaust environments after the initial atomization speed is determined, and to avoid performance degradation or failure caused by poor discharge, this embodiment adaptively corrects the initial atomization speed based on the back pressure of the flue.

[0101] Specifically, the back pressure of the flue can be measured in real time by installing a micro differential pressure sensor at the exhaust outlet of the air conditioner or at the interface connected to the public flue.

[0102] Among them, back pressure of the flue refers to the static pressure value inside the flue relative to the indoor environment (or atmospheric pressure) of the kitchen, and the unit is Pascal (Pa). A positive value indicates that the pressure inside the flue is higher than that inside or outside, forming a resistance to exhaust.

[0103] In this embodiment, after acquiring the back pressure of the flue in real time, the back pressure of the flue is combined with a preset correction algorithm to dynamically correct the initial atomization speed, thereby obtaining the final target atomization speed.

[0104] It is understandable that the atomized water vapor enters the flue from the air conditioner exhaust port and is eventually discharged outdoors. It needs to overcome the airflow resistance in the flue (i.e., the back pressure P of the flue). To maintain a certain discharge flow rate, the required power (reflected in the kinetic energy of the water vapor, i.e., velocity) needs to match the flow resistance. The greater the resistance, the greater the power required.

[0105] During peak cooking times (such as when multiple households are venting simultaneously) or when the duct is blocked, the back pressure in the kitchen's shared exhaust duct will increase significantly. In a positive pressure duct, if the water vapor discharge speed is insufficient, it will not only be difficult to discharge in the forward direction, but may also be forced back into the air conditioner by the high-pressure airflow. If the atomized water vapor cannot be discharged in time due to excessive back pressure, it is easy to accumulate due to discharge resistance, remain inside the air conditioner or in the exhaust duct, cool down, and recondense into water, which may cause water accumulation inside the unit, mold growth, or corrosion of parts. In this case, it is necessary to increase the atomization speed to enhance the kinetic energy of the water vapor and ensure that the atomized water vapor is discharged smoothly.

[0106] Therefore, in this embodiment, the target atomization speed can be positively correlated with the flue back pressure P. That is, when the flue back pressure P increases, the target atomization speed increases accordingly. A higher target atomization speed means that more water vapor enters the flue with a higher initial velocity per unit time, thereby increasing the jet momentum of the water vapor to ensure that it can penetrate the back pressure zone in the positive direction. This is beneficial for the water vapor to be carried away quickly, avoiding the secondary condensation of condensate or corrosion of components caused by the local accumulation of water vapor.

[0107] When the back pressure P in the flue decreases, the target atomization speed decreases accordingly, thus avoiding energy waste.

[0108] Furthermore, the aforementioned positive correlation can be specifically represented in various functional forms in the control algorithm. For example, in some embodiments, V 目标 =V 初 +S×P or V 目标 =V 初 ×(1+K×P).

[0109] Where S or K is a positive correlation back pressure correction coefficient, this correction method is simple, intuitive and easy to implement.

[0110] In some embodiments, different back pressure correction coefficients may be used within a specific flue back pressure range, or saturation limiting may be applied at extremely high flue back pressures, in order to balance equipment safety and energy consumption under extreme conditions.

[0111] Optionally, the target atomization rate can be determined based on the initial atomization rate and the flue back pressure, including: If the back pressure of the flue is less than or equal to the first back pressure threshold of the flue, then the target atomization speed is determined to be equal to the initial atomization speed.

[0112] If the flue back pressure is greater than the first flue back pressure threshold and less than or equal to the second flue back pressure threshold, then according to formula V 目标 =V 初 ×(1+K×P)Determine the target atomization speed.

[0113] If the back pressure of the flue is greater than the second flue back pressure threshold, then according to formula V 目标 =V 初 ×(1+K×P2)Determine the target atomization speed.

[0114] Among them, V 目标 V is the target atomization speed. 初 P1 represents the initial atomization speed, K represents the back pressure correction coefficient, P represents the flue back pressure, and P2 represents the second flue back pressure threshold.

[0115] In this process, after determining the initial atomization speed, the atomization intensity is modified in segments based on the back pressure of the flue. By setting a clear back pressure threshold range and matching different correction strategies, the system can achieve refined management of energy consumption control while ensuring emission reliability, and safe limits can be imposed on extreme operating conditions.

[0116] Specifically, a first flue back pressure threshold P1 and a second flue back pressure threshold P2 are preset. The first flue back pressure threshold P1 is a lower threshold, representing a condition where the flue is unobstructed and emission resistance is negligible. For example, P1 can be set to 100 Pa, but it is not limited to this. The second flue back pressure threshold P2 is a higher threshold, representing a high-resistance state in the flue, typically approaching or reaching the design's maximum allowable limit, and may also serve as a boundary for triggering a deep blockage warning. For example, the second flue back pressure threshold P2 can be set to 500 Pa to 600 Pa, but it is not limited to this. Wherein, P1... <P2。

[0117] Furthermore, after obtaining the flue back pressure P, the flue back pressure P is compared with the first flue back pressure threshold P1 and the second flue back pressure threshold P2.

[0118] When the real-time detected flue back pressure P satisfies P≤P1 (e.g., P≤100Pa), it is determined that the current emission resistance is very small, the flue is unobstructed, and no additional energy is needed to overcome the flue back pressure. Therefore, the target atomization speed can be set directly equal to the initial atomization speed, i.e., V. 目标 =V 初 Under this back pressure range of the flue, it can operate in a more economical mode, focusing on handling condensate and assisting in the cooling of the condenser base, thereby maximizing energy efficiency.

[0119] When P1 < P ≤ P2 (e.g., 100Pa < P ≤ 600Pa), it is determined that there is significant resistance in the flue, and the resistance is within the normal variable range. In this case, the target atomization speed can be linearly corrected according to the flue back pressure, where V 目标 =V 初 ×(1+K×P). In this flue back pressure range, V 目标 It is linearly positively correlated with P, that is, the greater the back pressure P of the flue, the greater the additional speed ratio (K×P) required to overcome the resistance, thereby ensuring that the kinetic energy of water vapor is matched with the exhaust resistance in real time, so as to overcome the exhaust resistance and ensure that the atomized water vapor can still be effectively discharged at a high back pressure.

[0120] The back pressure correction coefficient K is a positive constant that determines the intensity of the influence of the flue back pressure on the atomization rate within the range requiring correction. Its value can range from 0.001 Pa. -1 ≤K≤0.003Pa -1 If K is too small (e.g., K < 0.001 Pa) -1 This may result in the product of K×P terms remaining small under high back pressure, therefore V 目标 Compared to V 初 The increase in pressure may be insufficient to provide enough additional kinetic energy for the atomized water vapor to overcome the flow resistance caused by high back pressure; if K is too large (e.g., K > 0.003 Pa), it may also be insufficient. -1 If this happens, it can easily lead to excessive atomization, and the condensate will not evaporate completely and will accumulate, which will increase energy consumption and bring safety hazards.

[0121] In some embodiments, K = 0.002 Pa -1 For every 100 Pascals (Pa) increase in back pressure in the flue, the target atomization speed will increase by 20% from the initial atomization speed. This ensures that as the back pressure gradually increases, the increase in the kinetic energy of the water vapor can always outweigh the increase in resistance, maintaining reliable emission. This solves the problem of poor atomized water vapor emission and also avoids energy waste, thus balancing emission efficiency and energy consumption.

[0122] When P > P2 (e.g., P > 600 Pa), the flue back pressure is determined to have exceeded the conventional design limit, potentially indicating severe blockage or other abnormalities. In this case, continuing to linearly increase the atomization rate according to the actual value of the flue back pressure P may lead to a sharp increase in energy consumption and limited effectiveness (because the exhaust channel may be nearing physical blockage). Therefore, a protective limiting strategy is adopted, i.e., V... 目标 =V 初×(1+K×P2), at this point, the variable P in the correction calculation is replaced with the constant P2, which means that when the back pressure of the flue exceeds P2, the target atomization speed will no longer continue to increase with the increase of the back pressure of the flue, but will stabilize at the level corresponding to the back pressure of P2. This setting provides sufficient emission capacity to cope with high back pressure (based on P2 design) and prevents energy waste and equipment overload under extreme ineffective operating conditions.

[0123] Optionally, when determining the target atomization rate based on the initial atomization rate and the flue back pressure, the following further steps are included: When the back pressure of the flue exceeds the second back pressure threshold, a high-pressure warning for the flue is triggered.

[0124] Specifically, the process of determining the target atomization speed based on the initial atomization speed and the flue back pressure also includes a safety early warning mechanism. Specifically, when the acquired flue back pressure P is greater than the second flue back pressure threshold P2 (e.g., P2 = 600 Pa), it means that the detected flue back pressure has continuously or instantaneously exceeded the expected range for normal high-load operation, entering an abnormally high back pressure state. This indicates a risk of obstructed or blocked flow in the flue. In this case, in addition to limiting the target atomization speed (e.g., fixing the atomization speed to P2), a high-pressure flue warning is simultaneously triggered.

[0125] Triggering a high-pressure warning in the flue gas duct refers to generating a clear warning signal and notifying the user through a human-machine interface. Specific methods may include, but are not limited to: Visual cues, such as displaying specific warning icons (like exclamation marks) and text messages (e.g., high flue pressure, please check if the exhaust is clear) on the air conditioner's display screen, indicator lights, or connected mobile app.

[0126] Sound prompts, such as emitting a few specific beeping sounds or voice announcements.

[0127] Status records, such as recording the warning event, its occurrence time, and flue back pressure value in the equipment log, are useful for subsequent viewing or diagnosis.

[0128] Understandably, excessively high back pressure in flues is usually caused by external factors, such as the main valve of the public flue not being fully open, the flue being severely blocked by foreign objects, multiple households using the flue at the same time leading to saturation of its capacity, or excessive bending of the user's own exhaust hose. Sustained high back pressure not only affects exhaust efficiency but can also lead to backflow of fumes and even affect the exhaust emissions of equipment such as gas water heaters, posing safety hazards.

[0129] In this embodiment, the aforementioned early warning mechanism helps users to promptly detect and remove foreign objects in the flue (such as oil accumulation, stuck check valve, and congestion in the public flue), thus avoiding problems such as condensate overflow due to ineffective evaporation caused by long-term high back pressure operation, compressor overheat protection shutdown due to poor heat dissipation, and water vapor backflow into the room, resulting in mold growth on the walls or electrical safety hazards.

[0130] In other embodiments, indoor humidity H can also be incorporated. 内 Outdoor humidity H 外 Outdoor temperature T 外 The parameters are further adjusted to modify the initial atomization speed in order to achieve adaptive control with higher precision and safety.

[0131] For example, the indoor environmental parameters obtained include indoor humidity. Indoor humidity affects condensate production; the higher the humidity, the greater the amount and the faster the condensate is drawn from the air during the evaporator's cooling process. This requires a higher atomization rate to handle the increased condensate and prevent the water tank from overflowing quickly. Therefore, the initial atomization rate can be positively corrected based on indoor humidity; that is, the higher the indoor humidity, the higher the corrected target atomization rate.

[0132] In some embodiments, if H 内 >H 内high (e.g. H) 内high =70%), indicating a high water vapor concentration in the kitchen and a faster rate of condensate formation. At this time, V can be used as a reference. 初 Increase the atomization speed on the basis of V 目标 =V 初 ×C, where C ranges from 1.1 to 1.3, but is not limited to this.

[0133] In some embodiments, the correction method may also employ mapping correction, i.e., based on the humidity range to which the indoor humidity belongs (e.g., H). 内 <60%, 60% <H 内 <80%, H 内 (>80%), corresponding to a fixed atomization speed increment or percentage.

[0134] In some embodiments, combined with outdoor temperature T 外 The initial atomization rate is corrected, where if T 外 >T 外high (e.g., T) 外high =35℃), indicating that the condenser has difficulty dissipating heat. At this time, the atomization rate can be increased to enhance auxiliary cooling, for example, V 目标 =V 初 ×D, where D ranges from 1.1 to 1.3, but is not limited to this.

[0135] In some embodiments, combined with outdoor humidity H 外 The initial atomization rate is corrected, where if H 外 >H 外high (e.g. H) 外high =80℃ (e.g., on rainy days or during the plum rain season), indicating that the external environment is close to saturation, water vapor is difficult to diffuse, and is prone to condensation or even backflow in the flue. At this time, reduce the atomization speed, for example, V 目标 =V 初 ×E, where E ranges from 0.7 to 0.9, but is not limited to this.

[0136] In some embodiments, the indoor-outdoor temperature difference ΔT = |T 内 -T 外 |The difference between indoor and outdoor humidity ΔH=|H 内 -H 外 The initial atomization rate is corrected. Among other things, If ΔT is large (e.g., ΔT > 10℃), the total heat load of the air conditioner increases, the heat dissipation demand of the condenser increases, and stronger atomization cooling (water cooling) is needed to assist air cooling. In this case, the atomization speed can be increased to maintain the efficient operation of the condenser and prevent overheating.

[0137] Conversely, if ΔT is small (e.g., ΔT≤5℃), the atomization rate can be reduced.

[0138] In some embodiments, if ΔH is large and H 内 >H 外 (i.e., indoor humidity and outdoor dryness) Water vapor in the indoor air easily condenses in large quantities on the evaporator, resulting in a high condensation rate. At the same time, water vapor easily diffuses to the outside, which can increase the atomization speed. This is to match the high condensate generation rate and prevent the water tank from overflowing quickly.

[0139] Conversely, if ΔH is small or H 外 ≥H 内 (For example, if the outdoor humidity is as high as 85% on a rainy day), the indoor air itself has low humidity, the dehumidification capacity is small, and the external humidity is close to saturation, making it difficult for steam to be discharged. At this time, because the amount of condensate generated is not large, excessive atomization may lead to unnecessary energy consumption or make the indoor air too dry. Therefore, the atomization speed can be reduced.

[0140] Optional, indoor environmental parameters include indoor temperature; target atomization control parameters include target atomization frequency.

[0141] The target atomization control parameters for the atomization unit are determined based on indoor environmental parameters, including: The target atomization frequency is determined based on the indoor temperature.

[0142] In some embodiments employing an intermittent sprinkler mode, indoor environmental parameters include indoor temperature T.内 The target atomization control parameters include the target atomization frequency.

[0143] The atomization frequency refers to the expected number of times the atomization unit will start and perform a complete atomization operation per unit time (e.g., per hour), measured in times per hour. It defines the start-stop rhythm of the atomization operation; for example, the atomization unit may start 4 times per hour, with each operation lasting a fixed duration (e.g., 2 minutes). By adjusting the start-stop interval of the atomization unit, the atomization frequency can indirectly control the average condensate delivery rate per unit time to match the condensate generation rate. This is suitable for scenarios that are energy-sensitive or have a large water tank volume.

[0144] In this embodiment, the target atomization frequency can be directly determined or calculated based on the real-time indoor temperature through a preset mapping relationship. The basic trend is that the higher the indoor temperature, the higher the target atomization frequency.

[0145] It is understandable that the higher the indoor temperature, the greater the air conditioning cooling load, and the faster the condensate generation rate. By increasing the atomization frequency, the residence time of condensate in the water tank can be shortened, reducing the risk of overflow. At the same time, during low-load periods, intermittent operation at a low frequency can avoid the power consumption and wear caused by continuous low-power operation or fixed cycle control with frequent start-stop.

[0146] It should be noted that this solution is a simple and easy-to-implement control mode, suitable for scenarios where sensor configuration is limited or users choose energy-saving operation. In other embodiments, parameters such as outdoor temperature, condenser temperature, and flue back pressure can be combined to dynamically correct the atomization frequency (e.g., actively reducing the atomization frequency on humid and rainy days) to further improve system safety and adaptability.

[0147] Optionally, the target atomization frequency can be determined based on the indoor temperature, including: If the indoor temperature is lower than or equal to the first indoor temperature threshold, then the target atomization frequency is determined as the first atomization frequency.

[0148] If the indoor temperature is higher than the first indoor temperature threshold and lower than or equal to the second indoor temperature threshold, then the target atomization frequency is determined to be the second atomization frequency.

[0149] If the indoor temperature is higher than the second indoor temperature threshold, the target atomization frequency is determined to be the third atomization frequency.

[0150] Among them, the first indoor temperature threshold is lower than the second indoor temperature threshold, the first atomization frequency is lower than the second atomization frequency, and the second atomization frequency is lower than the third atomization frequency.

[0151] In this embodiment, in order to further improve the accuracy of control and the determinism of execution, the target atomization frequency is determined based on the indoor temperature. This can be achieved by using a segmented threshold judgment method. By presetting a clear indoor temperature limit and the corresponding target atomization frequency level, continuous changes in indoor temperature can be transformed into discrete and better control actions, making the control logic clearer and easier to implement.

[0152] Specifically, two indoor temperature thresholds are pre-stored, namely a first indoor temperature threshold T1 and a second indoor temperature threshold T2, and T1 < T2. For example, T1 can be set to 30℃ and T2 can be set to 40℃, but it is not limited to these.

[0153] Simultaneously, three target atomization frequency levels are preset, each corresponding to a temperature range: the first atomization frequency F1, the second atomization frequency F2, and the third atomization frequency F3, satisfying the condition F1 < F2 < F3. The unit is typically pulses per hour. For example, the first atomization frequency F1 corresponds to a lower frequency range of 1 to 2 pulses per hour; the second atomization frequency F2 corresponds to a medium frequency range of 3 to 5 pulses per hour; and the third atomization frequency F3 corresponds to a higher frequency range of 5 pulses per hour or more, but is not limited to these limits.

[0154] Furthermore, the current indoor temperature T is obtained by an indoor temperature sensor installed at the return air vent or inside the casing of the kitchen air conditioner. 内 Then, the indoor temperature T 内 The target atomization frequency F is determined by comparing it with the preset first indoor temperature threshold T1 and second indoor temperature threshold T2. 目标 .

[0155] Among them, when the real-time indoor temperature T is obtained 内 Satisfy T 内 ≤T1 (e.g., T) 内 When the temperature is ≤30℃, the indoor temperature is comfortable or slightly low, and the air conditioning system load is relatively light. At this time, the cooling demand of the air conditioner and the heat dissipation pressure of the condenser are both low, and the condensate production rate is usually slow. Therefore, the target atomization frequency F is determined. 目标 The first atomization frequency is F1 (e.g., 1 to 2 times / hour), i.e., F 目标 =F1, which keeps the atomizing unit in standby power-saving mode most of the time, only starting a brief atomization operation every 30 or 60 minutes, thus maintaining basic condensate treatment and auxiliary heat dissipation with low energy consumption.

[0156] When the real-time indoor temperature T 内 Satisfying T1 < T 内 ≤T2 (e.g., 30℃ < T) 内When the temperature is ≤40℃, the current temperature is considered to be under a medium heat load, which corresponds to common cooking activities or a summer afternoon kitchen environment. At this time, the air conditioning cooling demand increases, the condenser requires more frequent cooling support, and the condensate production rate also increases. Therefore, the target atomization frequency F is correspondingly adjusted. 目标 The second atomization frequency was determined to be higher, F2 (e.g., 3 to 5 times / hour), i.e., F 目标 =F2, atomization operations are more frequent (approximately every 12 to 20 minutes), allowing for timely handling of condensate and aiding in heat dissipation.

[0157] When the real-time indoor temperature T within the range meets T 内 >T2(T 内 When the temperature exceeds 40℃, the indoor temperature is too high, indicating a high heat load or extreme conditions (e.g., prolonged high-heat cooking, direct sunlight in the afternoon in summer without ventilation). The system faces significant heat dissipation pressure and the risk of condensate overflow. In this case, the target atomization frequency F should be adjusted. 目标 The highest third atomization frequency, F3 (e.g., 5 times / hour or more), is determined to be F. 目标 =F3, through high-frequency or even near-continuous atomization, achieves powerful cooling of the condenser and rapid treatment of condensate, ensuring stable operation and cooling efficiency of the system under extreme conditions.

[0158] It is understandable that higher indoor temperatures mean a greater air conditioning cooling load, more severe condensation on the evaporator surface, and a faster rate of condensate formation. Therefore, in this embodiment, by using a graded control strategy to increase the atomization frequency when the indoor temperature rises, the residence time of condensate in the water tank can be shortened, effectively preventing the water level from rising rapidly and causing overflow. At the same time, it avoids the atomization unit from running continuously for a long time, thus balancing reliability and energy efficiency.

[0159] Meanwhile, this embodiment employs explicit threshold comparison and level mapping, which can be directly implemented in a low-cost microcontroller (MCU) through simple comparison and judgment statements, without the need for complex arithmetic libraries. The drive parameters (such as PWM values) corresponding to the target atomization frequency level can be embedded in the program, making system debugging and production line calibration extremely simple, significantly reducing software development difficulty and production testing costs. In addition, at any given indoor temperature, the system has one and only one explicit target atomization frequency level corresponding to it, resulting in highly consistent and predictable control behavior.

[0160] It should be noted that the values ​​of the first indoor temperature threshold T1 and the second indoor temperature threshold T2, as well as the ranges of the first atomization frequency F1, the second atomization frequency F2, and the third atomization frequency F3 mentioned above, are only examples. In actual applications, they can be calibrated according to the compressor power, the water tank volume, and the user's usage habits.

[0161] Furthermore, this solution is suitable for cost-sensitive scenarios or those requiring low-power operation. In other embodiments, the target atomization frequency can be dynamically corrected by incorporating parameters such as condenser temperature, flue back pressure, indoor humidity, outdoor temperature, and outdoor humidity to further improve control accuracy and safety. The correction logic can refer to all the aforementioned embodiments for correcting the target atomization speed, including the correction parameters, judgment logic, function model, and beneficial effects. For example, increasing the atomization frequency to enhance cooling when the condenser temperature is too high will not be detailed here.

[0162] Figure 3 This is a flowchart illustrating another control method for a kitchen air conditioner provided in an embodiment of the present invention. The process uses indoor temperature as the main control basis, sets the initial atomization speed in segments, and determines the strategy by combining the target atomization speed to achieve efficient evaporation of condensate. It is suitable for cost-sensitive scenarios or scenarios with limited sensor configuration.

[0163] Specifically, such as Figure 3 As shown, when the kitchen air conditioner is turned on, the atomizing unit is in standby mode, waiting for the indoor temperature to be collected and determined.

[0164] The current indoor temperature is obtained in real time by an indoor temperature sensor installed in the return air vent or inside the housing. The initial atomization rate (i.e., the amount of condensate delivered per unit time, unit: mL / min) is determined according to the preset indoor temperature-initial atomization rate mapping relationship.

[0165] Based on the initial atomization rate, further adjustments can be made using other auxiliary parameters (such as condenser temperature, flue back pressure, etc.) to obtain the final target atomization rate. For example: If the condenser temperature is higher than 55℃, the atomization rate should be increased by 10% to 20% from the initial atomization rate. If the back pressure in the flue exceeds 600Pa, the target atomization speed is limited to prevent vapor retention, etc.

[0166] The atomizing unit starts working after the water level in the storage tank rises to the preset start-up level, avoiding inefficient operation. After starting, the atomizing unit continues to operate at the target atomization speed, spraying condensate onto the condenser surface for evaporation.

[0167] Determine whether to turn off the kitchen air conditioner or if the water level is below the minimum starting water level.

[0168] If so, the atomizing unit will stop operating, and the process will end.

[0169] The minimum starting water level refers to the lowest preset threshold corresponding to the height of the condensate liquid level in the water storage tank, which is used to determine whether the atomizing unit has the water volume conditions for safe and effective operation.

[0170] The minimum starting water level can correspond to 0% to 20% of the effective volume of the water storage tank 13, but is not limited to this.

[0171] The minimum starting water level can be detected by water level detection devices (such as float switches, electrode probes, or ultrasonic sensors).

[0172] When the water level is lower than the minimum starting water level, the operation of the atomizing unit is stopped to prevent the atomizing unit from drawing water without working, which could cause overheating, wear, or even burnout.

[0173] Furthermore, if not, i.e. the air conditioner is still running and the water level is not lower than the minimum starting water level, the atomization unit will continue to operate and environmental parameters such as indoor temperature will be continuously collected for possible subsequent dynamic corrections (such as adjusting the target atomization speed in combination with the condenser temperature).

[0174] In some embodiments, the water level change trend can be monitored in real time to predict whether the overflow risk level (such as 80% of the tank height) is about to be reached. If necessary, the atomization frequency can be increased to proactively prevent the overflow risk. Specifically, the current water level L(t) is obtained by a water level detection device at a fixed sampling period (e.g., every 10 seconds), and the water level rise rate R=dL / dt per unit time (e.g., mL / min or mm / min) is calculated.

[0175] Preset an overflow risk level L risk L risk You can take 80% of the total height of the water tank (for example, when the total volume is 600mL, L). risk =480mL). When the water level is close to L risk Even if it hasn't overflowed yet, there is a risk that it may overflow in a short time due to the rapid generation of condensate.

[0176] Therefore, if the current water level L < L risk However, the rate of water level rise R exceeds the preset threshold R. high (For example, if R > 30 mL / min, it indicates that condensate is accumulating rapidly (such as when the user is performing a cooking operation), indicating a potential risk of overflow.)

[0177] Or, if L > L risk Regardless of the size of R, it is considered a high-risk state.

[0178] Once an overflow risk is determined, the atomization frequency can be immediately increased from the current target frequency. For example, the original setting of 2 times / hour can be increased to 4 times / hour; or the intermittent operation mode can be switched to continuous operation mode until the water level drops back to a safe range (such as below 60% of the tank height).

[0179] Optionally, in extreme cases (such as when the water level has reached 90% and is still rising rapidly), a message such as "Condensation is increasing rapidly, please check the drainage" can be displayed on the screen or a notification can be pushed through the app to assist the user in intervention.

[0180] Figure 4 This is a flowchart illustrating another control method for a kitchen air conditioner provided in an embodiment of the present invention. The process sets the initial atomization speed based on the indoor temperature and dynamically corrects it in conjunction with the back pressure P of the flue, thereby achieving a coordinated match between the atomization speed and the exhaust capacity, effectively preventing condensate overflow or steam backflow caused by changes in flue resistance.

[0181] Specifically, such as Figure 4 As shown, when the kitchen air conditioner is turned on, the atomizing unit enters the initialization state, setting the current initial atomization speed V. 初始 and target atomization speed V 目标 Set the temperature to zero and wait for the indoor temperature and flue back pressure to be collected and assessed.

[0182] The current indoor temperature is obtained in real time by an indoor temperature sensor installed at the return air vent or inside the casing, and the back pressure P (unit: Pa) of the flue is obtained by a micro differential pressure sensor.

[0183] Based on the preset indoor temperature-initial atomization rate mapping relationship, the initial atomization rate (i.e., the amount of condensate delivered per unit time, unit: mL / min) is determined.

[0184] The initial atomization velocity is corrected in segments based on the flue back pressure P to obtain the target atomization velocity V. 目标 ,in: If P≤100Pa, the flue is unobstructed and the exhaust resistance is low, requiring no correction; V can be set directly. 目标 =V 初 .

[0185] If 100Pa < P ≤ 600Pa, then the flue has moderate resistance but is still within the working range. In this case, the atomization speed should be appropriately increased, such as V. 目标 =V 初 ×(1+K×P). In this flue back pressure range, V 目标 It is linearly positively correlated with P, that is, the greater the back pressure P of the flue, the greater the additional speed ratio (K×P) required to overcome the resistance, thereby ensuring that the kinetic energy of water vapor is matched with the exhaust resistance in real time, so as to overcome the exhaust resistance and ensure that the atomized water vapor can still be effectively discharged at a high back pressure.

[0186] The back pressure correction coefficient K is a positive constant that determines the intensity of the influence of the flue back pressure on the atomization rate within the range requiring correction; its value can be 0.002 Pa. -1 However, it is not limited to this.

[0187] If P > 600 Pa, it is determined that there may be a risk of blockage in the flue. To prevent water vapor from being unable to escape and causing condensation or backflow inside the machine, the target atomization velocity is limited to V. 目标 =V 初 ×(1+K×600)。

[0188] The atomizing unit starts working after the water level in the storage tank rises to the preset start-up level, avoiding inefficient operation. After starting, the atomizing unit operates at the target atomization speed V. 目标 It runs continuously, spraying condensate onto the surface of the condenser for evaporation.

[0189] Determine whether to turn off the kitchen air conditioner or if the water level is below the minimum starting water level.

[0190] If so, the atomizing unit will stop operating, and the process will end.

[0191] The minimum starting water level refers to the lowest preset threshold corresponding to the height of the condensate level in the water storage tank, used to determine whether the atomizing unit has the water volume required for safe and effective operation. When the water level is lower than the minimum starting water level, the atomizing unit stops operating, preventing overheating, wear, or even burnout caused by the atomizing unit drawing water without proper evacuation.

[0192] If not, i.e. the air conditioner is still running and the water level is not lower than the minimum starting water level, the atomizing unit will continue to operate and environmental parameters such as indoor temperature and flue back pressure will be continuously collected for possible subsequent dynamic correction.

[0193] Based on the same inventive concept, this invention also provides a kitchen air conditioner. Figure 5 This is a schematic diagram of another kitchen air conditioner provided in an embodiment of the present invention. Figure 6 This is a schematic diagram of the structure of another kitchen air conditioner provided in an embodiment of the present invention. Figure 7 This is a schematic diagram of the structure of an atomizing unit provided in an embodiment of the present invention, as shown below. Figures 5-7 As shown, the kitchen air conditioner includes: Evaporator 11.

[0194] Water storage tank 13 is used to collect condensate produced by evaporator 11.

[0195] Atomizing unit 100 is used to atomize and discharge condensed water.

[0196] A water level detection device (not shown in the figure) is installed inside the water storage tank 13 to detect the water level inside the water storage tank 13.

[0197] Condenser 12.

[0198] The control module (not shown in the figure) is communicatively connected to the atomizing unit 100 and the water level detection device, and is used to execute the control method described in any embodiment of the present invention. Therefore, the kitchen air conditioner provided in the embodiments of the present invention has the technical effects of the technical solutions in any of the above embodiments. The explanations of the same or corresponding structures and terms as described in the above embodiments will not be repeated here.

[0199] Optional, such as Figures 5-7 As shown, the atomizing unit 100 includes a water pump 14, a spray assembly 15, and a heat exhaust fan 16. The water pump 14 is used to draw condensate from the water storage tank 13 to the spray assembly 15, the spray assembly 15 is used to spray the condensate to the condenser 12, and the heat exhaust fan 16 is located on one side of the condenser 12.

[0200] Among them, such as Figures 5-7 As shown, the kitchen air conditioner includes a housing 10, which is the main support structure of the kitchen air conditioner and is used to house and protect the internal functional components. It can be made of metal or plastic to have good structural strength and sealing performance.

[0201] In some embodiments, such as Figures 5-7 As shown, the interior of the casing 10 is divided into an evaporation chamber and a condensation chamber by a heat-insulating partition 20. The evaporation chamber is equipped with an air inlet and an air return outlet, which are connected to the indoor air circulation system for cooling and dehumidifying the indoor air in the kitchen. The evaporator 11, water tank 13, and water pump 14 can be installed inside the evaporation chamber. The condensation chamber is equipped with an exhaust vent, which can be connected to the outside or a public flue through a pipe for condensation heat dissipation and moisture discharge. The condenser 12, spray assembly 15, and exhaust fan 16 can be installed inside the condensation chamber.

[0202] The heat insulation partition 20 can be made of a low thermal conductivity material (such as foamed polypropylene, flame-retardant ABS or composite heat insulation board) to ensure good airtightness and thermal insulation performance between the evaporation chamber and the condensation chamber.

[0203] The heat insulation partition 20 may be provided with through holes with silicone sealing rings for refrigerant pipelines to pass through, effectively blocking heat exchange between the evaporator and condenser chambers and improving the overall energy efficiency ratio.

[0204] like Figures 5-7 As shown, the evaporator 11 can be located at the top of the evaporation chamber and is used to cool and dehumidify the air entering the kitchen air conditioner. During operation, condensation will form on the surface of the evaporator 11 because the temperature is below the air dew point.

[0205] like Figures 5-7 As shown, the water storage tank 13 is located below the evaporator 11. The top of the water storage tank 13 may have an opening to allow the condensate produced by the evaporator 11 to flow naturally into the water storage tank 13 under the action of gravity.

[0206] In some embodiments, the water tank 13 is made of PP plastic material to provide good corrosion resistance and sealing.

[0207] In some embodiments, the volume of the water storage tank 13 may be set to not less than 500 mL (e.g., 500 mL to 800 mL) to ensure that enough condensate can be stored for circulation, while also avoiding frequent start-stop of the water pump 14 due to insufficient volume, which would affect the stable operation of the system.

[0208] like Figures 5-7 As shown, the water inlet of the water pump 14 can be located at or near the bottom of the water storage tank 13, and the height from the bottom wall of the water storage tank can be set to 6mm to 10mm. This can effectively extract the condensate accumulated at the bottom of the tank, and avoid sucking in sediment or impurities, thus ensuring the long-term stable operation of the water pump 14.

[0209] In some embodiments, the water pump 14 is disposed inside the water storage tank 13. The water inlet of the water pump 14 can be directly connected to the internal volume of the water storage tank 13 through an opening, without the need for an additional water inlet pipe, and can ensure that the condensate collected in the water storage tank 13 can be continuously and stably pumped.

[0210] In some embodiments, the water pump 14 is securely mounted on the bottom wall of the water storage tank 13 by a fixed bracket to ensure that it does not shift due to vibration during operation.

[0211] In some embodiments, the water pump 14 adopts a submersible pump or a micro centrifugal pump structure, such as a 12V micro centrifugal pump, which has the characteristics of small size, low noise and low power consumption.

[0212] In some embodiments, a filter screen or filter cover may be provided at the water inlet of the water pump 14 to prevent impurities in the water from entering the water pump 14 and to extend the service life of the water pump 14.

[0213] In some embodiments, the outlet of the water pump 14 is connected to the top of the spray assembly 15 via a delivery pipe 21, which forms a delivery channel for condensate from the water storage tank 13 to the top of the condenser 12.

[0214] In some embodiments, the delivery pipe 21 is made of food-grade polyvinyl chloride (PVC) material, which has good corrosion resistance, high temperature resistance and hygiene safety, and is suitable for long-term contact with condensate and stable operation in kitchen temperature and humidity change environments.

[0215] In some embodiments, the inner diameter of the delivery pipe 21 can be set to 8 mm to 12 mm (e.g., 11 mm). This inner diameter dimension can maintain appropriate flow resistance while ensuring sufficient water flow, thus achieving stable delivery of condensate. It is understood that an excessively large inner diameter of the delivery pipe 21 may lead to uneven water flow distribution, affecting the uniformity of spraying; an excessively small inner diameter may increase water flow resistance and reduce the delivery efficiency of the water pump 14. An inner diameter of 11 mm can achieve a good balance between flow demand and system resistance, which is beneficial to improving the overall atomization effect and system energy efficiency.

[0216] like Figures 5-7 As shown, the spray assembly 15 is used to evenly distribute and spray the condensate delivered by the water pump 14 onto the fin surface of the condenser 12. Its water outlet direction is set towards the fin surface of the condenser 12 to ensure that the condensate flowing out of the water outlet can be directly sprayed or dripped onto the condenser fins.

[0217] The spray assembly 15 is installed directly above the fin assembly of the condenser 12 and extends horizontally along the length of the condenser 12 (i.e., the fin arrangement direction) to ensure coverage of the entire heat exchange area.

[0218] In some embodiments, the spray assembly 15 is sealed and connected to the delivery pipe 21 connected to the outlet of the water pump 14 via a quick-connect fitting or threaded interface, so that condensate is stably delivered from the water storage tank 13 to the interior of the spray assembly 15 after being pressurized by the water pump 14.

[0219] In some embodiments, the spray assembly 15 is detachably fixed to the top bracket of the condenser 12 by means of clips, slide rails or screws, etc., to ensure that it remains stable under fan vibration or water flow impact, and at the same time, it is convenient for users to remove and clean it regularly to prevent scale or impurities from clogging the water outlet after long-term use.

[0220] like Figures 5-7 As shown, the condenser 12 is disposed in the condensation chamber of the housing 10 and can be composed of multiple rows of parallel fins and refrigerant pipes passing through the fins. It is used to receive the superheated refrigerant from the compressor and dissipate heat to cool and liquefy the high-temperature and high-pressure gaseous refrigerant.

[0221] In some embodiments, the condenser 12 adopts a multi-layer aluminum fin and internal copper tube (or microchannel flat tube) air-cooled heat exchange structure. The fin spacing can be between 1.2mm and 3.0mm, which ensures sufficient heat dissipation area, facilitates the formation of a uniform water film between the fins and rapid evaporation of condensate, and also takes into account the ability to resist oil fume blockage.

[0222] In some embodiments, the condenser 12 is installed vertically or at an angle to facilitate the downward flow of incompletely atomized water droplets along the fin surface and prevent water accumulation.

[0223] The fin surface of the condenser 12 is a high-temperature area. When the spray assembly 15 evenly distributes the condensate to the high-temperature fin surface, the water droplets quickly absorb heat and atomize, simultaneously carrying away a large amount of vaporization heat, which significantly reduces the fin temperature. This effectively reduces the temperature difference between the condensation temperature and the ambient temperature, which is beneficial to improving the heat exchange efficiency.

[0224] like Figures 5-7 As shown, the exhaust fan 16 is located on one side of the condenser 12, and its air outlet faces or is connected to the kitchen's public flue or outdoor exhaust duct through an exhaust pipe.

[0225] When the exhaust fan 16 is running, it generates a high-speed directional airflow. The airflow passes through the gap between the fins vertically or obliquely. On the one hand, it can accelerate the atomization of the water film on the fin surface, so that the water vapor can be efficiently discharged outdoors through the exhaust channel with the airflow. On the other hand, it can enhance air convection and improve the condensation and heat dissipation effect.

[0226] Specifically, when water droplets flow into the surface of condenser 12, the droplets exchange heat with the fins, evaporating and absorbing heat from the fins. Simultaneously, under the action of exhaust fan 16, the airflow accelerates the airflow over the fin surface, enhancing convective heat transfer and promoting the evaporation rate of the water droplets. The water vapor generated by evaporation mixes with the hot air and is drawn out of the condensation chamber under the negative pressure of exhaust fan 16, and discharged outdoors or into a public flue through the exhaust duct, achieving atomized discharge of condensate and ensuring that no liquid condensate is discharged during the entire operation.

[0227] In some embodiments, the exhaust fan 16 is fixedly installed on the windward or leeward side of the condenser 12, and its exhaust direction can be directly facing the fin surface of the condenser 12, so that the airflow direction generated by the rotation of its impeller is basically perpendicular to the fin plane of the condenser 12 or incident at a small angle, ensuring that the airflow can penetrate the entire fin gap array laterally, thereby accelerating the airflow around the fins and achieving forced evaporation and efficient heat dissipation of condensate.

[0228] In some embodiments, the exhaust fan 16 is a high-power centrifugal fan installed on the side of the condenser 12 to accelerate the airflow through the condenser fins, promote the evaporation and atomization of condensate, and its outlet can be connected to the kitchen exhaust duct (such as a flue) through a guide hood, so as to exhaust the atomized water vapor to the outside of the air conditioner.

[0229] When the kitchen air conditioner is running, the condensate produced by the evaporator 11 continuously flows into the water storage tank 13. The water pump 14 pressurizes and delivers the condensate to the spray assembly 15. The condensate is evenly sprayed onto the high-temperature fin surface of the condenser 12 by the spray assembly 15. Under the action of the heat of the fins, it quickly absorbs heat and evaporates. At the same time, the exhaust fan 16 runs to accelerate the air flow, promote the evaporation and atomization of water, and discharge the atomized water vapor to the outside through the exhaust duct, thereby achieving the effect of no condensate discharge from the kitchen air conditioner.

[0230] By placing the spray assembly 15 on top of the condenser 12 and connecting it to the water pump 14, the condensate is directionally transported and evenly distributed from the water storage tank 13 to the surface of the condenser 12. This structure not only promotes the rapid evaporation and atomization of condensate on the surface of the high-temperature fins, but also enhances the heat dissipation efficiency of the condenser through water cooling. Thus, without the need for external drainage pipes, the kitchen air conditioner achieves zero condensate discharge and improved energy efficiency.

[0231] Furthermore, the kitchen air conditioner also includes a water level detection device (not shown in the figure), which is located inside the water storage tank 13.

[0232] Specifically, the water level detection device is used to detect the water level of condensate in the water storage tank 13.

[0233] In some embodiments, the signal output terminal of the water level detection device is electrically connected to the control module of the water pump 14 to feed back the detection signal to the control module, thereby automatically starting and stopping the water pump 14 to ensure the safe and efficient operation of the system.

[0234] During the refrigeration process, the condensate generated by the evaporator 11 flows into the water storage tank 13 for storage. As the condensate accumulates, the water level gradually rises. When the water level detector detects that the water level has reached the preset start-up water level, it triggers the water pump 14 to start, which delivers the condensate to the spray assembly 15 on top of the condenser 12. After being distributed inside the spray assembly 15, the condensate is evenly sprayed out from its outlet holes in the form of fine particles or water mist. The sprayed condensate directly contacts the high-temperature fin surface of the condenser 12 and absorbs a large amount of heat through phase change. After absorbing heat, the condensate quickly vaporizes and turns into water vapor, effectively reducing the surface temperature of the fins. Under the airflow of the exhaust fan 16, the water vapor mixes with the hot air and is quickly discharged from the system, achieving complete atomization and discharge of the condensate.

[0235] In some embodiments, a float level switch is used as the water level detection device. The float level switch consists of a float, a swing arm, and micro contacts, and is fixedly installed on the inner wall of the water storage tank 13. Its trigger water level corresponds to the preset start water level. When the condensate water level rises to the preset start water level, the float rises with the liquid surface to the preset start water level, and the internal switch closes through mechanical linkage, outputting a high-level signal to the control module. The control module can then connect the power supply to the water pump 14, and the water pump 14 starts to work.

[0236] In some embodiments, the water level detection element is a dual-contact float switch, which includes a low-water-level contact and a high-water-level contact. The float moves with the water level, driving an internal mechanical structure to control the electrical connection and disconnection of different water levels. Specifically, the high-water-level contact corresponds to 50%–80% of the water tank volume and is used to start the water pump 14; the low-water-level contact corresponds to 20%–30% of the water tank volume and is used to stop the water pump 14.

[0237] For example, the high water level contact point corresponds to 50% of the water tank's volume, and the low water level contact point corresponds to 20% of the water tank's volume. When the water level rises to the high water level contact point (e.g., 50% of the volume), the double-contact float switch closes, and the water pump 14 starts; when the water level drops to the low water level contact point (e.g., 20% of the volume), the double-contact float switch opens, and the water pump 14 stops running. By setting high and low double contacts, a reasonable water level operating range can be formed, which can avoid frequent start-stop of the water pump 14 and ensure the effective utilization rate of the water tank 13.

[0238] It should be noted that after determining the target atomization control parameters (such as target atomization quantity, target atomization frequency, or target atomization speed), the control module sends corresponding execution commands to the atomization unit 100 to achieve precise evaporation management of the condensate. The water pump 14 and the exhaust fan 15 of the atomization unit 100 work together to complete an efficient and safe atomization process.

[0239] Specifically, the control module dynamically adjusts the rotational speed of the water pump 14 by regulating the drive voltage or PWM (Pulse Width Modulation) supplied to it. Since the pump flow rate is approximately proportional to its rotational speed, this method enables continuous and precise control of the amount of condensate delivered to the surface of the condenser 12 per unit time (i.e., atomization rate, unit: mL / min). For example, when the target atomization rate is 200 mL / min, the control module outputs a PWM signal with a corresponding duty cycle, causing the water pump 14 to operate stably at a speed matching the target atomization rate.

[0240] Meanwhile, the control module can also adjust the speed of the exhaust fan 15 according to the current operating conditions (such as flue back pressure, outdoor humidity, condenser temperature, etc.) to control the airflow speed and volume flowing through the condenser 12. Enhancing airflow can accelerate water mist evaporation and improve atomization efficiency; on the other hand, it can ensure that the generated water vapor is quickly discharged to the common flue, preventing condensation and backflow in the machine or flue. Especially under high humidity or high back pressure conditions, appropriately increasing the fan speed can effectively compensate for exhaust resistance and ensure system safety.

[0241] In some embodiments, the exhaust fan 16 and the water pump 14 adopt a linkage control strategy, that is, when the water pump 14 starts working, the exhaust fan 16 starts synchronously to ensure that the spraying and atomization processes are carried out simultaneously. This ensures that after the condensate is sprayed from the spray assembly 15 onto the fin surface of the condenser 12, it can be immediately accelerated to evaporate and discharged under the action of airflow. This simplifies the control logic, improves the response speed, and avoids the accumulation of condensate on the fin surface due to the delayed start of the fan.

[0242] In some embodiments, the rotational speed of the exhaust fan 16 can be dynamically adjusted based on feedback from the condenser temperature sensor.

[0243] For example, when the condenser temperature sensor detects that the fin temperature is high (e.g., above 55°C), the control module can increase the speed of the exhaust fan 16 to enhance airflow and accelerate moisture evaporation and heat dissipation.

[0244] When the condenser temperature sensor detects that the fin temperature is low (e.g., below 40°C), the fan speed can be appropriately reduced to achieve energy saving and noise reduction.

[0245] In some embodiments, the rotation speed of the exhaust fan 16 can also be adjusted in conjunction with the flow rate of the water pump 14. For example, when the flow rate of the water pump 14 increases, the rotation speed of the exhaust fan 16 increases accordingly to enhance the airflow's ability to evaporate the increased water volume; conversely, when the flow rate of the water pump 14 decreases, the rotation speed of the exhaust fan 16 decreases accordingly to achieve energy-saving operation.

[0246] In some embodiments, the flow rate of the water pump 14 and the rotation speed of the exhaust fan 16 can be synchronously adjusted according to a preset proportional relationship; or, different rotation speed levels of the exhaust fan 16 can be matched according to different flow ranges of the water pump 14, and through the coordinated control of the exhaust fan 16 and the water pump 14, the exhaust capacity can be matched with the actual water spray volume, thereby reducing energy waste.

[0247] Optionally, the kitchen air conditioner also includes an indoor environmental parameter sensor (not shown in the figure) that is connected to the control module. The indoor environmental parameter sensor is used to detect indoor environmental parameters and transmit the detected indoor environmental parameters to the control module as the input basis for the atomization control strategy.

[0248] In some embodiments, the indoor environmental parameter sensors include an indoor temperature sensor and / or an indoor humidity sensor, used to acquire indoor temperature and indoor humidity, respectively. These sensors can be integrated into the return air vent of the indoor unit of the air conditioner, within the electrical control box, or in the remote control, and communicate with the control module via wired or wireless means.

[0249] It should be noted that the control module can execute various control methods as described above based on the received indoor environmental parameters. For example, it can determine the initial atomization rate based on the indoor temperature or correct the initial atomization rate based on the indoor humidity. These methods will not be elaborated here.

[0250] Optionally, the kitchen air conditioner also includes a condenser temperature sensor (not shown in the figure) that is communicatively connected to the control module. The condenser temperature sensor is used to detect the temperature of the condenser and transmit the detected condenser temperature to the control module as a feedback parameter for the atomization control strategy.

[0251] In some embodiments, the condenser temperature sensor is a thermistor (such as an NTC) or a digital temperature sensor, installed on the surface of the condenser fins, near the refrigerant piping, or inside the air duct to accurately reflect the actual operating temperature of the condenser. Based on the acquired condenser temperature, the control module can execute the correction logic described above. For example, when the condenser temperature is higher than a preset threshold (such as 55°C), the initial atomization rate is increased to obtain the target atomization rate, thereby utilizing the endothermic effect of water evaporation to assist in cooling the condenser, improving system energy efficiency, and preventing the compressor from overheating and shutting down.

[0252] Optionally, the kitchen air conditioner also includes a micro differential pressure sensor (not shown in the figure) that communicates with the control module. The micro differential pressure sensor is used to detect the back pressure of the flue in real time and transmit the pressure signal to the control module.

[0253] In some embodiments, a micro differential pressure sensor is installed on the duct wall at the connection between the exhaust fan outlet and the common flue to effectively reflect the unobstructedness of the flue and the operating resistance of the exhaust system.

[0254] In some embodiments, the micro differential pressure sensor has two pressure sampling ports (a high-pressure end and a low-pressure end). The high-pressure end is connected to the pipe section between the air conditioner atomizing water vapor discharge port and the flue interface via a thin-diameter pressure sampling tube, or is directly installed on the inner wall of the flue, to sense the static pressure inside the flue. The low-pressure end is exposed to the indoor atmosphere of the kitchen, or connected to the air conditioning equipment compartment (communicating with the indoor air pressure), or connected to the outdoor atmosphere (such as near an external wall opening or fresh air inlet). The micro differential pressure sensor measures and outputs the pressure difference between the two points, which is the flue back pressure P. When P > 0, it indicates that the pressure inside the flue is higher than that indoors, forming positive pressure resistance.

[0255] Based on the acquired flue back pressure, the control module can execute the correction logic described above. For example, when P ≤ 100 Pa, the initial atomization rate is maintained; when 100 Pa < P ≤ 600 Pa, the formula V is applied. 目标 =V 初 × (1+K×P) increases atomization intensity; when P>600Pa, the atomization speed is limited, and a high-pressure warning for the flue can be triggered simultaneously to prevent condensation backflow or electrical safety hazards caused by water vapor not being discharged due to flue blockage.

[0256] In some embodiments, the micro differential pressure sensor has a range of -50 Pa to 800 Pa and a measurement accuracy of ±2 Pa to accurately capture pressure changes in the exhaust system under different operating conditions, but is not limited thereto.

[0257] In some embodiments, an absolute pressure sensor can be used to measure the absolute pressure inside the flue, and the back pressure P of the flue can be indirectly calculated by subtracting the stored local atmospheric pressure reference value (or the indoor pressure value measured by another sensor) from the control module software.

[0258] Optional, such as Figures 5-7 As shown, the spray assembly 15 includes a water distribution structure 151 extending along the length of the fins of the condenser 12, and the water distribution structure 151 is provided with a plurality of water outlet holes (not shown in the figure).

[0259] Specifically, the water distribution structure 151 is generally long and thin, and can be aligned with and cover the entire effective heat exchange area along the length direction (such as horizontal) of the condenser 12 fin array.

[0260] One end of the water distribution structure 151 can be sealed and connected to the delivery pipe 21 connected to the outlet of the water pump 14 through a quick-connect fitting. Under the pressure of the water pump 14, the condensate enters the internal cavity of the water distribution structure 151 and flows out evenly from multiple outlet holes at the bottom or lower side of the water distribution structure 151 after the internal pressure is balanced. This allows the condensate to act on the surface of the condenser 12 in a highly controllable and uniform manner, thereby improving atomization efficiency and heat dissipation.

[0261] In some embodiments, the overall length of the water distribution structure 151 is adapted to the fin length of the condenser 12, typically covering more than 90% of the effective heat dissipation area of ​​the condenser fins, to ensure that the condensate can be evenly distributed to the entire heat dissipation surface.

[0262] In some embodiments, the water distribution structure 151 is installed directly above the top of the condenser 12, maintaining a vertical distance of 10 mm to 30 mm from the upper surface of the condenser. This distance provides the necessary acceleration distance for water droplets to fall while preventing water flow from impacting the fin structure due to excessive proximity.

[0263] In some embodiments, the water distribution structure 151 is made of aluminum alloy. The aluminum alloy water distribution structure can be manufactured by extrusion molding or precision die casting. It has the advantages of being lightweight, having high thermal conductivity, corrosion resistance and good mechanical strength. The use of aluminum alloy not only makes it easy to process complex U-shaped channels or water distribution pipe structures with internal cavities, but also effectively adapts to the high temperature, high humidity and trace amount of oil fume corrosion environment in the kitchen.

[0264] In some embodiments, the water distribution structure 151 may also be injection molded from high-temperature and corrosion-resistant engineering plastics (such as PP, POM or PA66) to reduce the overall weight and cost of the machine, while meeting the durability requirements of the high humidity and high oil environment in the kitchen.

[0265] Optionally, the water distribution structure 151 includes a diversion channel or a water distribution pipe.

[0266] The distribution channel can be a U-shaped, rectangular, or semi-circular groove structure, integrally molded from aluminum alloy or engineering plastic. It extends along the length of the fins of the condenser 12, forming a connected cavity inside. Condensate flows in from one inlet, is naturally pressurized within the channel, and flows out through multiple outlet holes on the bottom wall. The water distribution structure 151 uses a distribution channel, which has good structural rigidity, is not easily deformed, and facilitates integrated snap-fit ​​installation, supporting quick disassembly and cleaning.

[0267] The water distribution pipe has a tubular structure, such as a linear piping system composed of straight pipes or multiple bends. Its internal flow channel cross-section can be circular, rectangular, or trapezoidal, and the material can be pressure-resistant PVC, silicone composite pipe, or flexible metal tubing to ensure smooth water flow and uniform pressure distribution. The water distribution pipe is arranged along the length of the fins of the condenser 12, and water outlet holes corresponding to the fin rows are drilled on the pipe wall. Under the pressure inside the pipe, condensate is ejected from each water outlet hole, forming a fine mist or droplets.

[0268] In some embodiments, the water distribution pipe may also be configured with a micro-throttling orifice or flow distributor to compensate for the end flow rate attenuation caused by pipeline pressure loss, thereby ensuring uniform water output.

[0269] The water distribution structure 151 uses water distribution pipes, which are flexible and adaptable, and are suitable for compact designs with limited internal space or that need to bypass other components.

[0270] Optionally, multiple water outlets are evenly distributed on the water distribution structure 151.

[0271] The water outlets are arranged at equal or approximately equal intervals along the length of the water distribution structure 151, with the center distance between adjacent water outlets remaining the same to ensure uniform outflow of condensate throughout the entire coverage area of ​​the water distribution structure. The uniformly distributed water outlets enable the condensate to form a continuous and uniform water film on the fin surface of the condenser 12, avoiding localized drying or water accumulation, thereby improving evaporation efficiency and heat dissipation consistency.

[0272] Optionally, the water outlet holes are configured to correspond one-to-one with the fin rows of the condenser 12.

[0273] The condenser 12 can be composed of multiple rows of copper tubes inserted into densely arranged aluminum fins. The fins are arranged in a parallel array along the direction perpendicular to the airflow, forming several fin rows, and each fin row constitutes an independent heat exchange channel.

[0274] In this embodiment, each water outlet corresponds to a row of fins, and each row of fins can obtain an independent and stable supply of condensate, which is conducive to forming a uniform water film and enhancing the consistency of overall evaporative heat dissipation.

[0275] In some embodiments, the water outlet can be aligned with the fin row, and the condensate flowing out of the water outlet can drip directly onto or flow to the top of the corresponding fin row, and spread downward along the fin surface under the action of gravity and surface tension to form a continuous water film. This can improve water utilization and avoid water flow from only wetting a local area after it converges, while other fins suffer from reduced heat exchange efficiency due to lack of water.

[0276] In some embodiments, the vertical projection position of each water outlet may also correspond to the gap between a row of fins in the condenser 12, so that the condensate flowing out of the water outlet can fall directly and cover the surface of the row of fins.

[0277] Optionally, the diameter of the water outlet is 1mm to 3mm.

[0278] When the outlet diameter is 1mm, the water flow is thin and the outflow velocity is relatively high, which is conducive to forming a thin and uniform water film on the surface of the high-temperature fins of condenser 12. This is suitable for operating conditions with high pump head or low condensate flow rate. At the same time, the small orifice diameter helps to reduce the amount of water sprayed per time and avoids the accumulation of unatomized water droplets at the bottom of the fins. However, too small an orifice diameter may increase the risk of clogging due to water hardness or trace impurities.

[0279] When the outlet diameter is 3mm, the water flow rate increases, making it suitable for high-humidity environments or high-power refrigeration scenarios with high condensate production, allowing for rapid coverage of a larger fin area. However, if the outlet diameter is too large, the water flow tends to fall in a columnar shape, making it difficult to spread fully, which may lead to uneven wetting in certain areas. Furthermore, the air volume and time required for atomization increase, affecting atomization efficiency.

[0280] In some embodiments, the diameter of the water outlet can be set to 2mm, which can ensure sufficient flow to meet the condensate circulation requirements of the kitchen air conditioner, and form a stable fine stream that is quickly atomized and discharged under the airflow of the exhaust fan 16; at the same time, this size has good permeability for small particles in common water quality, and can effectively reduce the probability of clogging when combined with the inlet filter.

[0281] In some embodiments, the total length of the water distribution structure 151 is consistent with the fin length of the condenser 12 or the physical width of the fin array. For example, the length of the water distribution structure 151 is set to 300 mm, which perfectly matches the effective heat dissipation length of the condenser 12 fins. This ensures that the spray range can completely cover the entire heat dissipation area of ​​the condenser 12, avoids blind spots at both ends of the spray, and achieves uniform distribution of condensate on the fins. In some embodiments, the total number of water outlet holes opened on the water distribution structure 151 is 10 to 20, which can ensure basic coverage and avoid affecting the continuity of water flow due to excessive number of holes causing the flow rate of a single hole to be too small.

[0282] In some embodiments, the water outlet can be designed as a tapered hole with a larger diameter at the top and a smaller diameter at the bottom (e.g., the diameter of the larger end is about 3 mm and the diameter of the smaller end is about 1.5 mm). The hole axis can be tilted 15° to 30° relative to the plane of the condenser fins to enhance the wetting ability of the water flow on the side and root areas of the fins, avoid local dry spots caused by oil fume adhesion, and improve the overall heat exchange efficiency.

[0283] Optional, such as Figures 5-7 As shown, the kitchen air conditioner also includes a first water receiving tray 17 located below the evaporator 11, and the first water receiving tray 17 is connected to the water storage tank 13 through a drain pipe 18.

[0284] Specifically, the first drip tray 17 is installed directly below the evaporator 11. One end of the drain pipe 18 is connected to the drain outlet of the first drip tray 17, and the other end extends to the inlet of the water storage tank 13. When the kitchen air conditioner is running, the condensate produced by the evaporator 11 first flows into the first drip tray 17, and then flows into the water storage tank 13 under gravity through the drain pipe 18. Collecting the condensate through the first drip tray 17 prevents it from dripping onto other components inside the casing 10, improving collection efficiency and cleanliness. The first drip tray 17 is sealed to the water storage tank 13 via the drain pipe 18, preventing contact between the condensate and electrical components and reducing the risk of short circuits or mold growth.

[0285] In some embodiments, the first drip tray 17 may be a shallow dish or trough structure, with its planar dimensions slightly larger than the projected area of ​​the evaporator 11, to ensure that it can fully receive the dripping condensate.

[0286] In some embodiments, the first drip tray 17 is fitted tightly to the bottom of the evaporator 11 to ensure that all condensate dripping from the evaporator 11 is effectively collected, preventing water droplets from splashing or leaking along the inner wall of the housing 10.

[0287] In some embodiments, the bottom of the first water receiving tray 17 is designed with a certain slope (e.g., 2° to 5°), and a drain outlet is provided at the lowest point to facilitate the collection and discharge of condensate by gravity.

[0288] In some embodiments, the first water tray 17 may be made of corrosion-resistant plastic (such as ABS, PP) or stainless steel, with a smooth surface to facilitate water flow and cleaning maintenance.

[0289] In some embodiments, the drain pipe 18 may be a flexible or rigid pipe structure, specifically a food-grade silicone tube or a PVC flexible tube, to provide moisture resistance, temperature resistance and flexibility.

[0290] In some embodiments, the interface of the drain pipe 18 is provided with an anti-loosening clamp or an inverted structure, and is equipped with a silicone sealing ring to ensure that there is no loosening or leakage during long-term operation.

[0291] In some embodiments, the drain pipe 18 can be fixed to the inner wall of the housing 10 by a snap fastener to prevent bending, blockage, or water accumulation.

[0292] Optional, such as Figures 5-7 As shown, the kitchen air conditioner also includes a second water tray 19 and a return pipe 22. The second water tray 19 is located below the condenser 12 and is connected to the water storage tank 13 through the return pipe 22.

[0293] Specifically, such as Figures 5-7 As shown, the second drip tray 19 is located directly below the fins of the condenser 12 and is used to collect condensate that drips from the surface of the condenser 12 due to incomplete evaporation. One end of the return pipe 22 is connected to the drain outlet of the second drip tray 19, and the other end is connected to the inlet of the water storage tank 13 or the side wall return port, so that the collected liquid water can be guided back to the water storage tank 13 through the return pipe 22. By recovering the unevaporated condensate, liquid water can be prevented from accumulating at the bottom of the condensation chamber, reducing the risk of corrosion of internal components by the humid environment.

[0294] In some embodiments, the planar dimensions of the second water receiving tray 19 are matched with or slightly larger than the projected area of ​​the condenser 12 to ensure that it can fully receive falling water droplets.

[0295] In some embodiments, the bottom of the second water receiving tray 19 is designed as an inclined structure with a drain outlet at the lowest point, so that liquid water can be collected by gravity.

[0296] In some embodiments, the second water tray 19 is made of high-temperature resistant and corrosion-resistant plastics (such as PPS, reinforced PP) or metal materials (such as stainless steel) to adapt to the high-temperature environment of the condenser.

[0297] In some embodiments, the return line 22 may be made of heat-resistant silicone tubing or reinforced PVC tubing.

[0298] In some embodiments, the connection of the return line 22 is secured by a quick-connect fitting or a sealing thread to ensure a tight seal and facilitate disassembly and maintenance.

[0299] Optional, such as Figures 5-7 As shown, the kitchen air conditioner also includes a compressor 23, which is located in the condensing chamber of the casing 10 and is connected to the evaporator 11 and the condenser 12 through refrigerant pipes to form a complete refrigeration cycle.

[0300] In this process, compressor 23 compresses the low-temperature, low-pressure refrigerant gas into a high-temperature, high-pressure gas, which is then delivered to condenser 12. During the heat dissipation process, the temperature of condenser 12 increases, providing the heat source required for the evaporation of sprayed condensate. The condensate evaporates and absorbs heat on the surface of condenser 12, enhancing the heat dissipation of condenser 12. This indirectly reduces the exhaust temperature and workload of compressor 23, thereby reducing energy consumption and extending the service life of compressor 23.

[0301] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0302] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for controlling a kitchen air conditioner, characterized in that, The kitchen air conditioner includes a condenser, a water storage tank for collecting condensate, and an atomizing unit for discharging the condensate. The control method includes: Obtain the water level in the water storage tank; When the water level reaches the preset start-up water level, the atomizing unit is activated to transport the condensate to the heat dissipation area of ​​the condenser, and the heat emitted by the condenser is used to atomize and discharge the condensate. Operating the atomizing unit includes: Obtain indoor environmental parameters; The target atomization control parameters of the atomization unit are determined based on the indoor environmental parameters. The atomization unit operates according to the target atomization control parameters.

2. The control method according to claim 1, characterized in that, The indoor environmental parameters include indoor temperature; the target atomization control parameters include target atomization speed; Determining the target atomization control parameters of the atomization unit based on the indoor environmental parameters includes: Obtain the indoor temperature; The initial atomization rate is determined based on the indoor temperature. The target atomization speed is determined based on the initial atomization speed.

3. The control method according to claim 2, characterized in that, Determining the initial atomization rate based on the indoor temperature includes: If the indoor temperature is lower than or equal to the first indoor temperature threshold, then the initial atomization rate is determined to be the first atomization rate. If the indoor temperature is higher than the first indoor temperature threshold and lower than or equal to the second indoor temperature threshold, then the initial atomization rate is determined to be the second atomization rate. If the indoor temperature is higher than the second indoor temperature threshold, then the initial atomization rate is determined to be the third atomization rate; Wherein, the first indoor temperature threshold is lower than the second indoor temperature threshold, the first atomization speed is lower than the second atomization speed, and the second atomization speed is lower than the third atomization speed.

4. The control method according to claim 2, characterized in that, Determining the target atomization speed based on the initial atomization speed includes: Obtain the temperature of the condenser; If the temperature of the condenser is higher than the condenser temperature threshold, the initial atomization rate is increased to obtain the target atomization rate.

5. The control method according to claim 2, characterized in that, Determining the target atomization speed based on the initial atomization speed includes: Obtain the back pressure of the flue; The target atomization speed is determined based on the initial atomization speed and the flue back pressure.

6. The control method according to claim 5, characterized in that, Determining the target atomization velocity based on the initial atomization velocity and the flue back pressure includes: If the back pressure of the flue is less than or equal to the first back pressure threshold of the flue, then the target atomization speed is determined to be equal to the initial atomization speed. If the flue back pressure is greater than the first flue back pressure threshold and less than or equal to the second flue back pressure threshold, then according to formula V 目标 =V 初 The target atomization rate is determined by ×(1+K×P); If the flue back pressure is greater than the second flue back pressure threshold, then according to formula V 目标 =V 初 The target atomization rate is determined by ×(1+K×P2); Among them, V 目标 V is the target atomization velocity. 初 Where is the initial atomization speed, K is the back pressure correction coefficient, P is the flue back pressure, and P2 is the second flue back pressure threshold.

7. The control method according to claim 6, characterized in that, When determining the target atomization velocity based on the initial atomization velocity and the flue back pressure, the method further includes: When the back pressure of the flue exceeds the second back pressure threshold of the flue, a high-pressure warning for the flue is triggered.

8. The control method according to claim 2, characterized in that, The indoor environmental parameters include indoor temperature; the target atomization control parameters include target atomization frequency; Determining the target atomization control parameters of the atomization unit based on the indoor environmental parameters includes: The target atomization frequency is determined based on the indoor temperature.

9. The control method according to claim 8, characterized in that, Determining the target atomization frequency based on the indoor temperature includes: If the indoor temperature is lower than or equal to the first indoor temperature threshold, then the target atomization frequency is determined to be the first atomization frequency; If the indoor temperature is higher than the first indoor temperature threshold and lower than or equal to the second indoor temperature threshold, then the target atomization frequency is determined to be the second atomization frequency. If the indoor temperature is higher than the second indoor temperature threshold, then the target atomization frequency is determined to be the third atomization frequency; Wherein, the first indoor temperature threshold is lower than the second indoor temperature threshold, the first atomization frequency is lower than the second atomization frequency, and the second atomization frequency is lower than the third atomization frequency.

10. A kitchen air conditioner, characterized in that, include: Evaporator; A water storage tank is used to collect the condensate produced by the evaporator; Atomizing unit is used to atomize and discharge the condensate. A water level detection device is installed inside the water storage tank to detect the water level in the water storage tank; Condenser; The control module is communicatively connected to the atomizing unit and the water level detection element, and is used to execute the control method according to any one of claims 1 to 9.

11. The kitchen air conditioner according to claim 10, characterized in that, The atomizing unit includes a water pump, a spray assembly, and a heat exhaust fan; The water pump is used to extract the condensate from the water storage tank to the spray assembly; The spray assembly is used to spray the condensate onto the condenser; The exhaust fan is located on one side of the condenser.

12. The kitchen air conditioner according to claim 10, characterized in that, The kitchen air conditioner also includes an indoor environmental parameter sensor that is communicatively connected to the control module. The indoor environmental parameter sensor is used to detect indoor environmental parameters.

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