Air conditioner indoor unit capable of preventing water blowing, control method and air conditioner

Abstract

The application provides an air conditioner indoor unit, a control method and an air conditioner, and the air conditioner indoor unit comprises a bottom shell and an air outlet, a water collecting assembly is arranged on the bottom shell, the water collecting assembly can be extended to below the air outlet to collect at least one of condensed water, ice and frost when the air conditioner indoor unit defrosts or has a risk of blowing water, and the water collecting assembly can move to a position not below the air outlet when the air conditioner indoor unit does not defrost and has no risk of blowing water. According to the application, the blowing water condition at the air outlet of the indoor heat exchanger can be effectively alleviated, and the problem of blowing water at the air outlet of the indoor unit of the split air conditioner in the defrosting mode, the dirty and blocked heat exchanger, the low-temperature environment and the dehumidifying mode is solved.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, specifically to an air conditioning indoor unit, control method, and air conditioner that is resistant to water blowing. Background Technology

[0002] Split-type air conditioners may experience minor leaks due to installation quality issues, requiring additional refrigerant after 2-3 years of use. In certain scenarios, such as computer rooms and equipment rooms, there is a need for cooling in low-temperature conditions, requiring air conditioning to be turned on in winter to maintain a low indoor environment.

[0003] Most home air conditioner users are accustomed to using the medium or low fan speed for cooling. When the air conditioning system is short of refrigerant, the indoor unit's heat exchanger temperature is very uneven when running at the low fan speed for cooling or dehumidification. The alternating hot and cold temperatures can easily produce a lot of condensation, which is then blown out, resulting in reduced comfort.

[0004] If the refrigerant in an air conditioner is normal, but the unit has been used for a long time, the heat exchanger of the indoor unit may become severely clogged and dirty, resulting in a significant reduction in airflow. The evaporation temperature of the entire heat exchanger will be very low, leading to frost or even ice formation. In severe cases, ice water may be blown out, affecting the user experience.

[0005] If the air conditioner refrigerant is normal, and it is used for cooling in a low-temperature environment, the entire indoor heat exchanger will be at a low temperature. The more cooling capacity the air conditioner outputs, the lower the temperature of the indoor heat exchanger will be, and frost or even ice may form.

[0006] Therefore, for split-type air conditioners, solving the problem of frost and ice formation in the indoor unit's cooling or dehumidification mode is a technical challenge that needs to be addressed.

[0007] Because existing split-type air conditioners are prone to water blowing at the air outlet of the indoor unit in low-temperature cooling or dehumidification modes due to refrigerant shortage, heat exchanger blockage, etc., this invention studies and designs an air conditioner indoor unit, control method and air conditioner that prevent water blowing. Summary of the Invention

[0008] Therefore, the technical problem to be solved by the present invention is to overcome the defect that water blows out of the air outlet of the indoor unit of the split air conditioner in the prior art when there is a lack of refrigerant, the heat exchanger is dirty and clogged, or in the cooling or dehumidification mode in a low temperature environment, so as to provide an air conditioner indoor unit, control method and air conditioner that is resistant to water blowing.

[0009] To solve the above problems, the present invention provides an air conditioner indoor unit that is resistant to water blowing, comprising:

[0010] The unit includes a bottom casing and an air outlet. The bottom casing is provided with a water collection component. The water collection component can extend outward to below the air outlet when the indoor unit of the air conditioner is defrosting or when there is a risk of water blowing, so as to collect at least one of condensate, ice and frost. The water collection component can also move to a position not below the air outlet when the indoor unit of the air conditioner is not defrosting and when there is no risk of water blowing.

[0011] In some implementations...

[0012] The bottom shell has an internal cavity for receiving the water collection component, and at least a portion of the water collection component can be disposed in the cavity. When the indoor unit of the air conditioner is defrosting or there is a risk of water blowing, the water collection component can extend outward and move until at least a portion of its structure is located below the air outlet, while at least a portion of its structure remains within the cavity. When the indoor unit of the air conditioner is not defrosting and there is no risk of water blowing, the water collection component can move until its entire structure is inserted into the cavity, with no portion of its structure located below the air outlet.

[0013] In some implementations...

[0014] The water collection component is a container with a cavity. The upper end of the container is open, and the cavity is a recessed structure formed from the opening downwards. The cavity is capable of collecting at least one of condensate, ice, and frost falling from the air outlet.

[0015] In some implementations...

[0016] The bottom of the cavity is at a distance h from the top of the container, which is the depth of the cavity, where h > 0.

[0017] In some implementations...

[0018] The container is provided with an overflow outlet, which connects the inside of the container with the receiving cavity outside the container. The height of the overflow outlet is lower than the top of the container and higher than half the height of the container. A drain pipe is also connected to the bottom shell, one end of which connects to the receiving cavity and the other end connects to the outside of the bottom shell.

[0019] In some implementations...

[0020] It also includes a panel and an air guide component. The air outlet is formed between the lower end of the panel and the bottom shell. The air guide component is disposed at the air outlet. When the indoor unit of the air conditioner defrosts, the air guide component moves to open at least part of the structure of the air outlet.

[0021] In some implementations...

[0022] When the indoor unit of the air conditioner defrosts, the air guide component moves to open a portion of the structure at the lower end of the air outlet, and a gap is formed between the lower end of the air guide component and the bottom shell. At the same time, the water collection component extends outward so that at least a portion of its structure is located below the gap, so that at least one of the condensate, ice and frost generated inside the indoor unit of the air conditioner can fall into the water collection component.

[0023] In some implementations...

[0024] It also includes a heat exchanger and a water receiving tray. The heat exchanger is located inside the space enclosed by the panel and the bottom shell, and the water receiving tray is also located inside the space enclosed by the panel and the bottom shell, with the water receiving tray located at the lower end of the heat exchanger.

[0025] In some implementations...

[0026] It also includes a motor and a transmission gear. The water collection assembly is also provided with a toothed structure, which meshes with the transmission gear. The motor is connected to the transmission gear to drive the transmission gear to move, and thus the water collection assembly can be driven to extend out of or retract from the bottom shell through the toothed structure.

[0027] The present invention also provides a control method for an air conditioner indoor unit with anti-water blowing as described above, comprising:

[0028] The testing procedure involves measuring the coil temperature or air outlet temperature of the indoor unit, which is within T.

[0029] The judgment step is to determine the relationship between temperature T and the first preset temperature T1;

[0030] The control steps are as follows: when Tinternal > T1, maintain the original state and continue detection; when Tinternal ≤ T1, it is determined that there is a risk of water blowing, and the water collection component is controlled to move out of the bottom shell and extend to the bottom of the air outlet.

[0031] In some implementations...

[0032] Before detecting the coil temperature or air outlet temperature of the indoor unit, the detection step first checks whether the air conditioner is turned on and whether it is running in cooling mode or dehumidification mode after being turned on.

[0033] When the air conditioner is running in cooling or dehumidification mode, and the compressor starts and runs for s minutes, the coil temperature or air outlet temperature of the indoor unit is detected within △T time. The speed R1 of the internal motor of the indoor unit fan is also detected in real time, as well as the operating frequency F1 of the compressor.

[0034] In the judgment step, judgment condition 1 is the judgment condition within T, which is to judge the relationship between T and the first preset temperature T1 and the second preset temperature T2, where T1>T2. Judgment condition 2 is the judgment condition for R1, judgment condition 3 is the judgment condition for F1, and the priority order of the control steps is: judgment condition 1>judgment condition 2>judgment condition 3.

[0035] In some implementations...

[0036] In the aforementioned judgment step, when Tinternal ≤ T2, the judgment condition 2 is entered: comparing the relationship between the internal motor speed R1 and the maximum speed R.

[0037] In the control steps, if R1 < R, the speed of the internal motor is increased, and the values ​​within time T and R1 are detected within time ΔT. The control action is then performed based on the following determination:

[0038] If T_internal > T_1, then restore to the state before adjustment, that is, restore to the internal motor speed before adjustment, and retract the water collection assembly into the interior of the bottom shell;

[0039] If T2 < T<T1, then maintain the current state, that is, maintain the current internal motor speed and maintain the current extended state of the water collection component;

[0040] If Tinternal ≤ T2, then proceed to the judgment condition 2, compare the relationship between the internal motor speed R1 and the maximum speed R, and control whether the internal motor speed increases or not based on the comparison result.

[0041] In some implementations...

[0042] In the aforementioned judgment step, when Tinternal ≤ T2, the judgment condition 2 is entered: comparing the relationship between the internal motor speed R1 and the maximum speed R.

[0043] If R1≥R, and the internal motor speed cannot be increased, then proceed to judgment condition 3: compare the relationship between the compressor operating frequency F1 and the lowest frequency F, and perform control actions according to the following judgment:

[0044] If F1≤F, the compressor is controlled to operate at the lowest frequency F, and the time T is detected within ΔT. If T≤T2, the defrosting mode is entered, the compressor is stopped, the current speed of the indoor motor is maintained, the air guide plate of the indoor unit is rotated to a specific position, and the water collection component is extended to start defrosting. If T>T1, the indoor fan speed and compressor frequency are restored to the state before adjustment, and the water collection component is retracted. If T2<T≤T1, the current indoor fan speed, compressor frequency, and the extended state of the water collection component are maintained.

[0045] In some implementations...

[0046] In the aforementioned judgment step, when Tinternal ≤ T2, the judgment condition 2 is entered: comparing the relationship between the internal motor speed R1 and the maximum speed R.

[0047] If R1≥R, and the internal motor speed cannot be increased, then proceed to judgment condition 3: compare the relationship between the compressor operating frequency F1 and the lowest frequency F, and perform control actions according to the following judgment:

[0048] If F1 > F, then the operating frequency of the compressor is reduced, and within the time interval ΔT, F1 and T are detected, and control actions are performed according to the following determination:

[0049] If Tinternal > T1, then restore the internal fan speed and compressor frequency to the state before adjustment, and control the water collection component to retract; if T2 < Tinternal ≤ T1, then maintain the current internal fan speed, compressor frequency, and the extended state of the water collection component; if Tinternal ≤ T2, then continue to the judgment condition 3: compare the relationship between the compressor operating frequency F1 and the lowest frequency F value, and control whether the compressor frequency is reduced according to the comparison result.

[0050] In some implementations...

[0051] The detection step occurs when the air conditioner is detected to be operating in heating mode;

[0052] The control step involves controlling the water collection component to move out of the bottom shell and extend below the air outlet, and injecting water into the water collection component.

[0053] The present invention also provides an air conditioner, which includes the aforementioned water-resistant indoor unit.

[0054] The air conditioner indoor unit, control method, and air conditioner provided by this invention have the following beneficial effects:

[0055] 1. This invention provides a water collection component installed on the bottom shell of the indoor unit of an air conditioner. This component extends outwards to below the air outlet during defrosting or when there is a risk of water blowing from the indoor unit, collecting at least one of condensate, ice, or frost. This effectively solves the problem of water blowing from the air outlet of the indoor unit in split-type air conditioners during refrigerant shortages, heat exchanger blockages, or in low-temperature cooling or dehumidification modes. Furthermore, this invention can predict the risk of water blowing in advance and extend the water collection component to catch the water blown out by the indoor unit, simultaneously preventing water blowing. It can also catch the melting ice water blown out by the melting ice during defrosting when the indoor heat exchanger has a thick layer of frost or ice, preventing ice water from dripping onto the ground and improving the user experience.

[0056] 2. The control method of the split indoor unit with water collection component of the present invention detects the coil temperature or air outlet temperature of the indoor heat exchanger, and the control logic determines whether there is a risk of water blowing from the indoor unit. If so, the water collection component extends to catch the blown water. Furthermore, when the heat exchanger of the indoor unit frosts, the air conditioner enters the defrosting stage. During the defrosting and de-icing stage, the water collection component of the indoor unit extends to catch the condensate and ice fragments generated during defrosting, preventing them from falling to the ground and causing after-sales complaints. This solves the problem of frost, ice, and water blowing in the indoor unit of split air conditioners in cooling or dehumidifying modes when there is a lack of refrigerant, a clogged heat exchanger, or low temperature. It also adjusts the speed of the indoor motor and the operating frequency of the compressor in real time to effectively alleviate the frost and ice formation of the indoor heat exchanger, allowing the air conditioner to maintain normal cooling or dehumidifying operation in environments with a lack of refrigerant, a clogged heat exchanger, or low temperature, maintaining room temperature and improving user experience.

[0057] 3. The water collection component of this invention also has an auxiliary humidification function. When the air conditioner is in cooling and heating mode, especially in heating mode, the indoor environment is very dry. Users can inject clean water or other liquids into the extended water collection component. The water collection component is located right below the air outlet. The indoor airflow accelerates the vaporization of the liquid, humidifies the indoor air, and improves comfort. Attached Figure Description

[0058] Figure 1 This is a front view of the anti-water-blowing indoor unit of the present invention when the water collection assembly is retracted.

[0059] Figure 2 yes Figure 1 Side sectional view;

[0060] Figure 3 yes Figure 2 A magnified view of part A in the middle;

[0061] Figure 4 This is a front structural view of the air conditioner indoor unit of the present invention with the water collection component extended;

[0062] Figure 5 yes Figure 4 Side sectional view;

[0063] Figure 6 yes Figure 5 A magnified view of part B in the middle section;

[0064] Figure 7 This is a schematic diagram of the structure of the water collection component and the transmission component of the present invention.

[0065] Figure 8 yes Figure 7 A magnified view of part C in the middle;

[0066] Figure 9 yes Figure 7 A magnified view of part D in the middle;

[0067] Figure 10 yes Figure 4 A partial sectional view;

[0068] Figure 11 yes Figure 10 A magnified view of part E;

[0069] Figure 12 This is a control system diagram of the anti-water-blowing indoor unit of the air conditioner according to the present invention;

[0070] Figure 13 This invention relates to the control process of an air conditioning indoor unit designed to prevent water from blowing out. Figure 1 —Auxiliary humidification function;

[0071] Figure 14 This invention relates to the control process of an air conditioning indoor unit designed to prevent water from blowing out. Figure 2 — Anti-frost and anti-blowing function.

[0072] The reference numerals in the attached figures are as follows:

[0073] 1. Bottom shell; 2. Air outlet; 3. Water collection assembly; 4. Receiving cavity; 5. Panel body; 6. Air guide component; 7. Gap; 8. Receiving cavity; 9. Overflow outlet; 10. Heat exchanger; 11. Drain pipe; 12. Motor; 13. Transmission gear; 14. Tooth structure; 15. Fan. Detailed Implementation

[0074] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0075] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0076] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0077] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0078] like Figures 1 to 11 As shown, the present invention provides an air conditioner indoor unit that is resistant to water blowing, comprising:

[0079] The unit comprises a bottom shell 1 and an air outlet 2. A water collection component 3 is provided on the bottom shell 1. The water collection component 3 can extend outward to below the air outlet 2 when the indoor unit of the air conditioner is defrosting or when there is a risk of water blowing, so as to collect at least one of condensate, ice and frost. The water collection component 3 can move to a position not below the air outlet 2 when the indoor unit of the air conditioner is not defrosting and when there is no risk of water blowing.

[0080] This invention features a water collection component mounted on the bottom of the indoor unit of an air conditioner. This component extends outwards to below the air outlet during defrosting or when there is a risk of water blowing from the unit, collecting at least one of condensate, ice, or frost. This effectively solves the problem of water blowing from the air outlet of the indoor unit in split-type air conditioners during refrigerant shortages, heat exchanger blockages, or in low-temperature cooling or dehumidification modes. Furthermore, this invention can predict the risk of water blowing in advance and extend the water collection component to catch the water blown out, simultaneously preventing water blowing. It can also catch the melting ice water blown out during defrosting when the indoor heat exchanger has a thick layer of frost or ice, preventing it from dripping onto the ground and improving the user experience.

[0081] The split indoor unit of this invention adds a water collection component. When the air conditioner is in cooling or dehumidifying mode, it can determine in advance whether there is a risk of water blowing out of the indoor unit and extend the water collection component to catch the water blown out by the indoor unit. When the frost or ice on the indoor heat exchanger is thick, the extended water collection component can also catch the ice water blown out when the frost melts during the defrosting process of the indoor unit, preventing the ice water blown out when the frost melts from dripping onto the ground.

[0082] In the air conditioning system of the present invention, when there is a shortage of refrigerant, a clogged heat exchanger, or a low-temperature environment, the indoor unit can prevent frost, ice, and water from forming by adjusting the speed of the indoor and outdoor motors and the operating frequency of the compressor.

[0083] In some implementations...

[0084] The bottom shell 1 has an internal cavity 4, and at least a portion of the water collection component 3 can be disposed in the cavity 4. When the indoor unit of the air conditioner is defrosting or there is a risk of water blowing, the water collection component 3 can extend outward and move until at least a portion of its structure is located below the air outlet 2, while at least a portion of its structure remains within the cavity 4. When the indoor unit of the air conditioner is not defrosting and there is no risk of water blowing, the water collection component 3 can move until its entire structure is inserted into the cavity 4, with no portion of its structure located below the air outlet 2.

[0085] The present invention also has a receiving cavity provided inside the bottom shell that can accommodate a water collection component inserted therein, so that the water collection component can extend outward to below the air outlet when defrosting or when there is a risk of water blowing, thereby catching at least one of ice, frost and water, preventing ice, frost, water, etc. from falling to the ground and improving the user experience.

[0086] In some implementations...

[0087] The water collection component 3 is a container with a cavity 8. The upper end of the container is open, and the cavity 8 is a groove structure formed by recessing downward from the opening. The cavity 8 is capable of receiving at least one of condensate, ice, and frost falling from the air outlet 2.

[0088] This is a preferred structural form of the water collection component of the present invention. It is preferably a container with an open top and an internal cavity, which can catch at least one of the water, ice and frost falling from the air outlet, thereby ensuring normal cooling or dehumidification operation in environments with refrigerant shortage, heat exchanger blockage, or low temperature, maintaining room temperature, improving user experience, and avoiding situations such as water blowing.

[0089] In some implementations...

[0090] The bottom of the cavity 8 is at a distance h from the top of the container, which is the depth of the cavity 8, where h > 0. This is a preferred structural form of the water collection component of the present invention, that is, forming a cavity structure with a certain depth, which is h, so as to effectively receive and collect ice, frost and water blown out from the air outlet and prevent them from being blown into the indoor space.

[0091] In some implementations...

[0092] The container is provided with an overflow port 9, which connects the inside of the container to the receiving cavity 4 outside the container. The height of the overflow port 9 is lower than the top of the container and higher than half the height of the container. A drain pipe 11 is also connected to the bottom shell 1. One end of the drain pipe 11 connects to the receiving cavity 4, and the other end connects to the outside of the bottom shell 1. Preferably, the present invention, by providing an overflow port on the water collection assembly, can prevent the water inside the container from overflowing due to excessive height, and prevent excessive water inside the water collection assembly from overflowing. The overflow port allows water exceeding the height of the overflow port inside the container to be discharged into the receiving cavity of the bottom shell, and the drain pipe on the bottom shell discharges the water inside to the outside of the indoor unit, thereby preventing water from blowing out of the indoor unit.

[0093] Structural description of the water collection component of this invention:

[0094] A water collection assembly is designed below the air outlet of the unit, which includes a water collection pool (cavity 8). The water collection pool is installed in a groove (accommodation cavity 4) designed on the panel. Driven by a motor, the water collection assembly can extend and retract. When the water collection pool is retracted, the front edge of the air outlet is consistent with that of ordinary models, and the unit can operate normally. When the water collection pool is fully extended, it is located below the air guide plate. When water drips from the air guide plate, it will flow directly into the water collection pool. The water collection pool has an overflow structure and a toothed structure. The toothed structure cooperates with the transmission gear. The rotation of the stepper motor drives the rotation of the transmission gear, which in turn drives the linear movement of the water collection pool through the toothed structure, realizing its extension and retraction. The overflow structure is designed above the overflow plane, generally designed to be 3-8mm high (which can be adjusted according to the specific model structure). When the water level exceeds the overflow plane, the water will flow through the overflow structure into the accommodation cavity, and then be discharged outside the unit through the drain pipe. The housing and water collection components are designed as a single unit to prevent water leakage. A drain hole is designed next to the housing and connected to a drain pipe to drain the water from the housing.

[0095] In some implementations...

[0096] It also includes a panel body 5 and an air guide component 6. The lower end of the panel body 5 forms the air outlet 2 between the bottom shell 1 and the air guide component 6 is disposed at the air outlet 2. When the indoor unit of the air conditioner defrosts, the air guide component 6 moves to open at least part of the structure of the air outlet 2.

[0097] The present invention also includes a panel and an air guide component. The air guide component can be positioned at the air outlet to guide the airflow. When the indoor unit defrosts or there is a risk of water blowing, the air guide component moves to open at least part of the structure of the air outlet, so that water or frost can fall onto the water collection component through the opened part of the structure, thus completing the function and effect of collecting ice, frost and water using the water collection component.

[0098] In some implementations...

[0099] When the indoor unit of the air conditioner defrosts, the air guide component 6 moves to open part of the structure at the lower end of the air outlet 2, and a gap 7 is formed between the lower end of the air guide component 6 and the bottom shell 1. At the same time, the water collection component 3 extends outward so that at least part of its structure is located below the gap 7, so that at least one of the condensate, ice and frost generated inside the indoor unit of the air conditioner can fall into the water collection component 3.

[0100] The present invention preferably uses the gap formed between the lower end of the air guide component and the bottom shell, with the water collection component extending below the gap, so that the frost, water or ice generated by the heat exchanger inside the indoor unit falls into the water collection component through the gap, thus completing the collection of ice, frost and water, preventing the risk of water blowing into the room, and ensuring that the frost and ice formed will not enter the indoor space.

[0101] In some implementations...

[0102] It also includes a heat exchanger 10 and a water receiving tray. The heat exchanger 10 is located inside the space enclosed by the panel body 5 and the bottom shell 1. The water receiving tray is also located inside the space enclosed by the panel body 5 and the bottom shell 1, and the water receiving tray is disposed at the lower end of the heat exchanger 10.

[0103] The indoor unit of the air conditioner of the present invention further includes a heat exchanger and a water collection tray. Unlike the water collection component provided on the bottom shell of the present invention, the water collection tray of the present invention is used to collect the condensate produced by the heat exchanger, while the water collection component provided on the bottom shell is used to extend outward to collect frost or water when there is a risk of water blowing or defrosting, so as to prevent it from blowing into the room. This solves the problem of water blowing in the indoor unit of split air conditioners when there is a lack of refrigerant, the heat exchanger is dirty and clogged, or in the cooling or dehumidification mode in a low-temperature environment.

[0104] In some implementations...

[0105] It also includes a motor 12 and a transmission gear 13. The water collection assembly 3 is also provided with a toothed structure 14. The toothed structure 14 meshes with the transmission gear 13. The motor 12 is connected to the transmission gear 13 so as to drive the transmission gear 13 to move. In turn, the toothed structure 14 can drive the water collection assembly 3 to extend out of the bottom shell 1 or retract into the bottom shell 1.

[0106] This is a further preferred structural form of the water collection component of the present invention. Through the transmission gear and the toothed structure provided on the water collection component, a toothed transmission can be formed. The transmission gear is driven to rotate by the motor, which in turn drives the water collection component to perform reciprocating motion of extending out of the bottom shell or retracting into the bottom shell. This ensures that the water and frost generated can be caught in time when there is a risk of water blowing or defrosting, thus improving the user experience.

[0107] The function of the water collection component of this invention:

[0108] like Figure 1 The water collection component of the indoor unit of the air conditioner is installed below the air outlet and is closed by default. When the air conditioner receives a command, the air guide plate of the indoor unit opens and the water collection component extends.

[0109] like Figure 4 The diagram shows the working structure of the water collection component. When the indoor heat exchanger defrosts and defrosts, the ice water falls off the surface of the heat exchanger, falls into the air duct, is blown out from the air outlet, is caught by the water collection component, and is discharged into the water pipe.

[0110] like Figure 7-9 Similar to a drip tray, it is driven by a stepper motor through a transmission gear to retract and extend. The other end of the drip tray has an overflow port; melted ice water enters the receiving chamber through the overflow port and is discharged through a drain pipe. The overflow port is located at the top of the drip tray; when the water level exceeds this position, water overflows.

[0111] The auxiliary humidification function of the water collection component of this invention is programmed into the main controller. When the user issues a corresponding command, the air conditioner main controller receives the command and takes action, extending the water collection component. When the user turns off this function, the water collection component retracts.

[0112] like Figure 12-14 The present invention also provides a control method for an air conditioner indoor unit with anti-water blowing as described above, comprising:

[0113] The testing procedure involves measuring the coil temperature or air outlet temperature of the indoor unit, which is within T.

[0114] The judgment step is to determine the relationship between temperature T and the first preset temperature T1;

[0115] The control steps are as follows: when Tinternal > T1, maintain the original state and continue detection; when Tinternal ≤ T1, it is determined that there is a risk of water blowing, and the water collection component 3 is controlled to move out of the bottom shell 1 and extend to the bottom of the air outlet 2.

[0116] The control method for a split-type indoor unit with a water collection component of the present invention detects the coil temperature or outlet air temperature of the indoor heat exchanger, and the control logic determines whether there is a risk of water blowing from the indoor unit. If so, the water collection component extends to catch the blown water. Furthermore, when the heat exchanger of the indoor unit frosts, the air conditioner enters the defrosting stage. During the defrosting and de-icing stage, the water collection component of the indoor unit extends to catch the condensate and ice fragments generated during defrosting, preventing them from falling to the ground and causing after-sales complaints. This solves the problem of frost, ice, and water blowing in the indoor unit of split-type air conditioners in cooling or dehumidifying modes when there is a lack of refrigerant, a clogged heat exchanger, or low temperature environments. In addition, the method adjusts the speed of the indoor motor and the operating frequency of the compressor in real time to effectively alleviate the frost and ice formation of the indoor heat exchanger, allowing the air conditioner to maintain normal cooling or dehumidifying operation in environments with a lack of refrigerant, a clogged heat exchanger, or low temperature environments, maintain room temperature, and improve user experience.

[0117] In existing technology, when the indoor unit of an air conditioner experiences frost or ice buildup during cooling or dehumidification operation, it directly enters anti-freeze protection mode and shuts down, stopping the compressor and ceasing the supply of cooling energy to the indoor heat exchanger until the frost melts. During this process, the anti-freeze shutdown occurs frequently, the compressor is constantly on and off, indoor temperature fluctuates, and there is a risk of ice water being blown out during defrosting.

[0118] Therefore, the present invention adds a control method to prevent frost and water blowing, which can effectively alleviate the frost and ice formation of indoor heat exchangers, enabling the air conditioner to maintain normal cooling or dehumidification operation in environments with refrigerant shortage, heat exchanger blockage, or low temperature, thereby maintaining room temperature and improving user experience.

[0119] If the above control methods are implemented, in extremely serious cases, as time accumulates, the control logic determines that the indoor unit still has a risk of blowing water, and then extends the water collection component to catch the blown water; furthermore, if the heat exchanger of the indoor unit frosts, the air conditioner will enter the defrosting stage. During the defrosting and de-icing stage, the water collection component of the indoor unit extends to catch the condensed water and ice fragments produced during defrosting, preventing them from falling to the ground and causing after-sales complaints.

[0120] In some implementations...

[0121] Before detecting the coil temperature or air outlet temperature of the indoor unit, the detection step first checks whether the air conditioner is turned on and whether it is running in cooling mode or dehumidification mode after being turned on.

[0122] When the air conditioner is running in cooling or dehumidification mode, and the compressor starts and runs for s minutes, the coil temperature or air outlet temperature of the indoor unit is detected within △T time. The speed R1 of the internal motor of the indoor unit fan is also detected in real time, as well as the operating frequency F1 of the compressor.

[0123] In the judgment step, judgment condition 1 is the judgment condition within T, which is to judge the relationship between T and the first preset temperature T1 and the second preset temperature T2, where T1>T2. Judgment condition 2 is the judgment condition for R1, judgment condition 3 is the judgment condition for F1, and the priority order of the control steps is: judgment condition 1>judgment condition 2>judgment condition 3.

[0124] This invention sets three judgment conditions: temperature T, indoor fan motor speed R1, and compressor frequency F1, with the priority order being: judgment condition 1 > judgment condition 2 > judgment condition 3. When T is greater than T1 (indicating no risk of frost or water blowing), normal operation is controlled. When T is less than or equal to T1 (indicating a risk of water blowing), the water collection component extends to intercept and catch any water that might be blown into the room. If the temperature further decreases, the indoor fan motor speed is increased to enhance heat exchange between the air and water, causing water vaporization or reducing water vapor condensation. If the indoor fan speed has reached its maximum but still cannot increase T, indicating a continued risk of water blowing, the compressor frequency is further reduced to decrease heat exchange between the refrigerant and air, reducing the degree of air condensation into condensate or frost, further improving the effectiveness of preventing water blowing. Therefore, this invention can prevent water blowing or frost formation in the indoor unit of the air conditioner in three levels, greatly improving the effectiveness of preventing water blowing and frost formation.

[0125] The anti-frost and anti-water blowing control method (mode) of this invention is written into the main controller as a program. Once the air conditioner enters the cooling operation mode or dehumidification mode and meets the condition that the compressor starts running for ≥S min (because condensation and frost on the indoor heat exchanger is a cumulative process that will only occur after the air conditioner has been running for a period of time), the indoor coil temperature (called T_inner) can be detected in real time to determine whether there is a risk of water blowing and whether to enter the defrosting action.

[0126] In some implementations...

[0127] In the aforementioned judgment step, when Tinternal ≤ T2, the judgment condition 2 is entered: comparing the relationship between the internal motor speed R1 and the maximum speed R.

[0128] In the control steps, if R1 < R, the speed of the internal motor is increased, and the values ​​within time T and R1 are detected within time ΔT. The control action is then performed based on the following determination:

[0129] If T_internal > T_1, then restore to the state before adjustment, that is, restore to the internal motor speed before adjustment, and retract the water collection assembly into the interior of the bottom shell;

[0130] If T2 < T<T1, then maintain the current state, that is, maintain the current internal motor speed and maintain the current extended state of the water collection component;

[0131] If Tinternal ≤ T2, then proceed to the judgment condition 2, compare the relationship between the internal motor speed R1 and the maximum speed R, and control whether the internal motor speed increases or not based on the comparison result.

[0132] This is the preferred control method of the present invention when Tinner ≤ T2 and the internal motor speed R1 < R. This method increases the airflow of the indoor unit and raises the temperature of the indoor heat exchanger by intermittently or continuously increasing the speed of the internal motor (the higher the temperature of the heat exchanger, the less likely it is to frost), thereby effectively preventing frost or water blowing. Furthermore, during or after the adjustment process, Tinner is assessed. If Tinner > T1, it indicates that the risk of water blowing has been eliminated after adjustment. At this point, the control is restored to the internal motor speed before adjustment, and the water collection assembly is retracted into the bottom shell. If T2 < T_internal < T1, it means that the risk of water blowing has not yet been eliminated, but the temperature is not very low. In this case, the current motor speed and water collection component extension are maintained, in order to raise T_internal to above T1 in the future. If T_internal ≤ T2, it means that adjusting the speed of the internal motor is not enough to eliminate the risk of water blowing from the indoor unit. In this case, the speed of the internal motor can be increased until T_internal can be raised to between T2 and T1 or even above T1. This ensures that the control steps can be adjusted in real time and effectively according to the detection results, thereby improving the effectiveness of preventing water blowing and frosting.

[0133] Generally, an air conditioner's indoor motor speed has a maximum set value R, and the compressor has a minimum set frequency F. Lowering the compressor frequency negatively impacts cooling capacity. When the indoor coil temperature T meets the frosting conditions, the indoor motor speed R1 is first increased until it reaches the maximum speed R. During this process, the compressor operating frequency is not forcibly adjusted. If the frosting condition cannot be improved even when the indoor motor speed is at its maximum (i.e., T still meets the frosting conditions), the compressor operating frequency is reduced until it reaches the minimum frequency F. (Lowering the compressor frequency reduces the amount of cooling delivered to the indoor heat exchanger, increasing the heat exchanger temperature; higher heat exchanger temperatures reduce the likelihood of frosting). If T still meets the conditions for entering defrosting mode, the air conditioner enters defrosting mode. At this time, the compressor stops running, the indoor unit's air deflector is positioned accordingly, and the water collection assembly extends. After defrosting is complete, the air conditioner resumes normal operation.

[0134] The indoor coil temperature has two regulating thresholds, T1 and T2, where T2 < T1. These two values ​​have different regulating effects (T2 is the frosting threshold; when the indoor coil temperature T is lower than T2, the heat exchanger will frost; when T is between T2 and T1, it is a transition period where the heat exchanger will not frost, but the low temperature will produce a lot of condensation, and the indoor unit may blow water; when T is greater than T1, it enters a safe zone and will not frost).

[0135] In some implementations...

[0136] In the aforementioned judgment step, when Tinternal ≤ T2, the judgment condition 2 is entered: comparing the relationship between the internal motor speed R1 and the maximum speed R.

[0137] If R1≥R, and the internal motor speed cannot be increased, then proceed to judgment condition 3: compare the relationship between the compressor operating frequency F1 and the lowest frequency F, and perform control actions according to the following judgment:

[0138] If F1≤F, the compressor is controlled to operate at the lowest frequency F, and the time T is detected within ΔT. If T≤T2, the defrosting mode is entered, the compressor is stopped, the current speed of the indoor motor is maintained, the air guide plate of the indoor unit is rotated to a specific position, and the water collection component is extended to start defrosting. If T>T1, the indoor fan speed and compressor frequency are restored to the state before adjustment, and the water collection component is retracted. If T2<T≤T1, the current indoor fan speed, compressor frequency, and the extended state of the water collection component are maintained.

[0139] This is the preferred control method of the present invention when Tinner ≤ T2 and the internal motor speed R1 ≥ R. At this time, the internal motor speed has reached its maximum speed, and it is no longer possible to prevent water blowing or frost formation by increasing the speed. At this time, Tinner can be further reduced by decreasing the compressor frequency F1. If F1 ≤ F, it means that the compressor frequency has reached its minimum, and it is no longer possible to prevent water blowing or frost formation by reducing the compressor frequency. If Tinner ≤ T2 is detected at this time, it means that frost formation or water blowing will occur immediately (or frost formation has already occurred). At this time, the defrosting mode is entered. By stopping the compressor operation, the heat exchange between the refrigerant and the air in the heat exchanger is reduced, thereby reducing the coldness of water vapor in the air. The system adjusts the temperature to determine the degree of frost or water formation and maintains or increases the internal motor speed. The blower then blows air to achieve defrosting, while the water collection component extends outwards to collect defrosting water or condensate. During or after adjustment, the temperature Tinternal is assessed. If Tinternal > T1, the risk of water condensation has been eliminated. In this case, the internal motor speed and compressor frequency are restored to their pre-adjustment levels, and the water collection component is retracted into the bottom housing. If T2 < Tinternal < T1, the risk of water condensation has not yet been eliminated, but the temperature is not very low. The current motor speed, compressor frequency, and water collection component extension are maintained, with the aim of increasing Tinternal to a level greater than T1 in the future.

[0140] In some implementations...

[0141] In the aforementioned judgment step, when Tinternal ≤ T2, the judgment condition 2 is entered: comparing the relationship between the internal motor speed R1 and the maximum speed R.

[0142] If R1≥R, and the internal motor speed cannot be increased, then proceed to judgment condition 3: compare the relationship between the compressor operating frequency F1 and the lowest frequency F, and perform control actions according to the following judgment:

[0143] If F1 > F, then the operating frequency of the compressor is reduced, and within the time interval ΔT, F1 and T are detected, and control actions are performed according to the following determination:

[0144] If Tinternal > T1, then restore the internal fan speed and compressor frequency to the state before adjustment, and control the water collection component to retract; if T2 < Tinternal ≤ T1, then maintain the current internal fan speed, compressor frequency, and the extended state of the water collection component; if Tinternal ≤ T2, then continue to the judgment condition 3: compare the relationship between the compressor operating frequency F1 and the lowest frequency F value, and control whether the compressor frequency is reduced according to the comparison result.

[0145] This is the preferred control method of the present invention when Tinternal ≤ T2 and the internal motor speed R1 ≥ R. At this time, the internal motor speed has reached its maximum speed, and it is no longer possible to prevent water blowing or frost formation by increasing the speed. At this time, Tinternal can be further reduced by decreasing the compressor frequency F1. If F1 > F, it means that the compressor frequency can be further reduced, and water blowing or frost formation can be prevented by reducing the compressor frequency. If it is detected that Tinternal > T1, it means that the risk of water blowing has been eliminated after adjustment. At this time, the control is restored to the internal motor speed and compressor frequency before adjustment, and the water collection is... The component retracts into the bottom shell; if T2 < T_internal < T1, it means that the risk of water blowing has not yet been eliminated, but the temperature is not very low. In this case, the current motor speed, compressor frequency, and water collection component extension are maintained, in order to raise T_internal to above T1 in the future. If T_internal ≤ T2, it means that adjusting the compressor frequency is not enough to eliminate the risk of water blowing from the indoor unit. In this case, the compressor frequency can be further reduced until T_internal can rise to between T2 and T1 or even above T1. This ensures that the control steps can be adjusted in real time and effectively according to the detection results, thereby improving the effectiveness of water blowing prevention and frost prevention.

[0146] The specific control steps of this invention are as follows:

[0147] After the air conditioner is turned on, first check whether the air conditioner is running in cooling mode or dehumidification mode and whether the compressor has been running for ≥ s min after starting. Within the time △T of the main controller, the indoor coil temperature T, the indoor motor speed R1 and the compressor operating frequency F1 are detected and collected in real time. The collected data are compared with the preset values, and three judgment conditions are set with the following priority: judgment condition 1 (temperature) > judgment condition 2 (indoor fan speed) > judgment condition 3 (compressor operating frequency).

[0148] The explanation of the previous paragraph is as follows: The most direct way to detect frost formation on the indoor heat exchanger is by measuring temperature (indoor coil temperature). Therefore, the first criterion is to compare the indoor coil temperature Tinternal with the preset frost threshold temperature T2. When Tinternal > T2, it means the frost threshold temperature has not yet been reached, and no adjustment is needed; the status quo can be maintained. When Tinternal ≤ T2, there is a risk of frost formation. At this point, criterion 2 needs to be considered: can the indoor motor speed be increased? Increasing the speed can raise the heat exchanger temperature and alleviate the frost formation. If the indoor motor speed has already been increased to its maximum and cannot be increased further, and there is still a risk of frost formation, then the compressor operating frequency should be reduced. Reducing the compressor operating frequency can alleviate the frost formation on the indoor heat exchanger. If the compressor operating frequency has already been reduced to its minimum value and cannot be reduced further, and the frost condition Tinternal ≤ T2 is still met, then the compressor should stop running and enter defrosting mode. Temperature is the key condition for determining frost formation, so it is the first criterion. In order not to affect the air conditioning cooling effect, the compressor operating frequency cannot be reduced all at once (the lower the compressor operating frequency, the worse the cooling effect). Therefore, the indoor motor speed is increased first. If the frost formation cannot be alleviated, the compressor frequency is reduced. Therefore, the motor speed is the second criterion, and the compressor frequency is the third criterion.

[0149] First, proceed to judgment condition 1: compare the value within T with the regulating threshold values ​​T2 and T1.

[0150] 1. If the initial detection shows T > T1, maintain the original state and continue detection.

[0151] 2. If the initial detection shows Tinternal ≤ T1, the water collection component extends, then the indoor coil temperature is detected. When Tinternal ≤ T2, the process proceeds to judgment condition 2: comparing the indoor motor speed R1 with the maximum speed R value.

[0152] 1. If R1 < R, the speed of the indoor motor is increased every 50 rpm, and the indoor coil temperature is detected within a time interval T and the current indoor motor speed R1 is obtained. The following actions are taken based on the following criteria:

[0153] (1) If T_internal > T_1, then restore to the state before adjustment (restore the internal fan speed before adjustment, and retract the water collection assembly).

[0154] (2) If T2 < T_internal ≤ T1, then maintain the current state (maintain the current internal fan speed and the extended state of the water collection component).

[0155] (3) If Tinternal ≤ T2, then proceed to judgment condition 2: compare the internal motor speed R1 with the maximum speed R value, and act according to the judgment condition...

[0156] 2. If R1≥R, the internal motor speed cannot be adjusted, and the process proceeds to condition 3: Compare the compressor operating frequency F1 with the lowest frequency F value, and take action according to the following criteria.

[0157] (1) If F1≤F, the compressor will maintain operation at the lowest frequency F. At this time, if the indoor coil temperature T≤T2 within the time interval △T, the defrosting mode will be entered, the compressor will stop running, the air guide plate of the indoor unit will be moved to the corresponding position, the water collection component will be extended, and defrosting will begin. After defrosting is completed, normal operation will resume.

[0158] If Tinner > T1, then restore the internal fan speed and compressor frequency to their original values, and retract the water collection assembly.

[0159] If T2 < Tinternal ≤ T1, then maintain the current internal fan speed, compressor frequency, and water collection assembly extension status.

[0160] (2) If F1 > F, then reduce the compressor's operating frequency, and within a time interval ΔT, detect the indoor pipe temperature T and obtain the current compressor operating frequency F1. Then, perform the action again based on the following judgment.

[0161] ① If Tinternal > T1, then restore to the state before adjustment (restore the internal fan speed and compressor frequency to the state before adjustment, and retract the water collection assembly).

[0162] ②If T2 < T_internal ≤ T1, then maintain the current state (that is, maintain the current internal fan speed, compressor frequency, and water collection component extension status).

[0163] ③ If T ≤ T2, then proceed to judgment condition 3: compare the compressor operating frequency F1 with the lowest frequency F value, and act according to the judgment condition…

[0164] In some implementations...

[0165] The detection step occurs when the air conditioner is detected to be operating in heating mode;

[0166] The control step involves controlling the water collection component 3 to move out of the bottom shell 1 and extend below the air outlet 2, and injecting water into the water collection component 3.

[0167] The water collection component of this invention also has an auxiliary humidification function. When the air conditioner is in cooling and heating mode, especially in heating mode, the indoor environment is very dry. Users can inject clean water or other liquids into the extended water collection component. The water collection component is located right below the air outlet. The indoor airflow accelerates the vaporization of the liquid, humidifies the indoor air, and improves comfort.

[0168] The present invention also provides an air conditioner, which includes the aforementioned water-resistant indoor unit.

[0169] The improvement of this invention lies in:

[0170] 1. Split indoor units with water collection components can detect the coil temperature of the indoor heat exchanger and adjust the speed of the indoor motor and the operating frequency of the compressor in real time. This effectively alleviates the frosting and icing of the indoor heat exchanger, allowing the air conditioner to maintain normal cooling or dehumidification operation in environments with refrigerant shortage, clogged heat exchanger, or low temperature, thus maintaining room temperature and improving user experience.

[0171] 2. Anticipate the risk of water blowing from the indoor unit. If there is a risk, extend the water collection component to catch the blown water and prevent it from dripping onto the ground. When the indoor unit enters the defrosting and de-icing stage, the extended water collection component can catch the condensed water and ice fragments produced to prevent them from falling onto the ground and causing after-sales complaints.

[0172] 3. When the air is dry, the water collection component of the indoor unit can extend upon user command to inject clean water or liquid into it. The airflow of the indoor unit will accelerate vaporization, humidify the air, and improve comfort.

[0173] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. An air conditioner indoor unit resistant to water blowing, characterized in that: include: The unit has a bottom shell (1) and an air outlet (2). A water collection assembly (3) is provided on the bottom shell (1). The water collection assembly (3) can extend outward from the bottom shell (1) and reach below the air outlet (2) when the indoor unit of the air conditioner is defrosting or when there is a risk of water blowing, so as to collect at least one of condensate, ice and frost. The water collection assembly (3) can move to a position not below the air outlet (2) when the indoor unit of the air conditioner is not defrosting and when there is no risk of water blowing.

2. The air conditioning indoor unit with anti-water blowing capability according to claim 1, characterized in that: The bottom shell (1) is provided with a receiving cavity (4) inside. At least part of the structure of the water collection component (3) can be disposed in the receiving cavity (4). When the indoor unit of the air conditioner is defrosting or there is a risk of water blowing, the water collection component (3) can extend outward and move until at least part of its structure is located below the air outlet (2), and at least part of its structure is still located in the receiving cavity (4). When the indoor unit of the air conditioner is not defrosting and there is no risk of water blowing, the water collection component (3) can move until its entire structure is inserted into the receiving cavity (4), and no part of its structure is located below the air outlet (2).

3. The air conditioner indoor unit with anti-water blowing capability according to claim 2, characterized in that: The water collection component (3) is a container with a cavity (8) open at the top. The cavity (8) is a recessed structure formed from the opening downwards. The cavity (8) is capable of receiving at least one of the condensate, ice and frost falling from the air outlet (2).

4. The air conditioning indoor unit with anti-water blowing capability according to claim 3, characterized in that: The bottom of the cavity (8) is at a distance h from the top of the container, which is the depth of the cavity (8), where h > 0.

5. The air conditioning indoor unit with anti-water blowing capability according to claim 3, characterized in that: The container is provided with an overflow port (9), which can connect the inside of the container with the receiving cavity (4) outside the container. The height of the overflow port (9) is lower than the top of the container and higher than half the height of the container. A drain pipe (11) is also connected to the bottom shell (1). One end of the drain pipe (11) can be connected to the receiving cavity (4) and the other end can be connected to the outside of the bottom shell (1).

6. The air conditioning indoor unit with anti-water blowing capability according to any one of claims 1-5, characterized in that: It also includes a panel body (5) and an air guide component (6). The lower end of the panel body (5) and the bottom shell (1) form the air outlet (2). The air guide component (6) is disposed at the air outlet (2). When the indoor unit of the air conditioner defrosts, the air guide component (6) moves to open at least part of the structure of the air outlet (2).

7. The air conditioning indoor unit with anti-water blowing capability according to claim 6, characterized in that: When the indoor unit of the air conditioner defrosts, the air guide component (6) moves to open the lower part of the structure of the air outlet (2), and a gap (7) is formed between the lower end of the air guide component (6) and the bottom shell (1). At the same time, the water collection component (3) extends outward to at least part of its structure below the gap (7), so that at least one of the condensate, ice and frost generated inside the indoor unit of the air conditioner can fall into the water collection component (3).

8. The air conditioning indoor unit with anti-water blowing capability according to claim 6, characterized in that: It also includes a heat exchanger (10) and a water receiving tray. The heat exchanger (10) is located inside the space enclosed by the panel body (5) and the bottom shell (1). The water receiving tray is also located inside the space enclosed by the panel body (5) and the bottom shell (1), and the water receiving tray is located at the lower end of the heat exchanger (10).

9. The air conditioning indoor unit with anti-water blowing capability according to any one of claims 1-5, characterized in that: It also includes a motor (12) and a transmission gear (13). The water collection assembly (3) is also provided with a toothed structure (14). The toothed structure (14) meshes with the transmission gear (13). The motor (12) is connected to the transmission gear (13) to drive the transmission gear (13) to move. In turn, the toothed structure (14) can drive the water collection assembly (3) to extend out of the bottom shell (1) or retract into the bottom shell (1).

10. A control method for an air conditioning indoor unit with anti-water blowing capability as described in any one of claims 1-9, characterized in that: include: The testing procedure involves measuring the coil temperature or air outlet temperature of the indoor unit, which is within T. The judgment step is to determine the relationship between temperature T and the first preset temperature T1; Control steps: when T_internal > T1, maintain the original state and continue detection; when T_internal ≤ T1, it is determined that there is a risk of water blowing, and then control the water collection component (3) to move out of the bottom shell (1) and extend to the bottom of the air outlet (2).

11. The control method according to claim 10, characterized in that: Before detecting the coil temperature or air outlet temperature of the indoor unit, the detection step first checks whether the air conditioner is turned on and whether it is running in cooling mode or dehumidification mode after being turned on. When the air conditioner is running in cooling or dehumidification mode, and the compressor starts and runs for s minutes, the coil temperature or air outlet temperature of the indoor unit is detected within △T time. The speed R1 of the internal motor of the indoor unit fan is also detected in real time, as well as the operating frequency F1 of the compressor. In the judgment step, judgment condition 1 is the judgment condition within T, which is to judge the relationship between T and the first preset temperature T1 and the second preset temperature T2, where T1>T2. Judgment condition 2 is the judgment condition for R1, judgment condition 3 is the judgment condition for F1, and the priority order of the control steps is: judgment condition 1>judgment condition 2>judgment condition 3.

12. The control method according to claim 11, characterized in that: In the aforementioned judgment step, when Tinternal ≤ T2, the judgment condition 2 is entered: comparing the relationship between the internal motor speed R1 and the maximum speed R. In the control steps, if R1 < R, the speed of the internal motor is increased, and the values ​​within time T and R1 are detected within time ΔT. The control action is then performed based on the following determination: If T_internal > T_1, then restore to the state before adjustment, that is, restore to the internal motor speed before adjustment, and retract the water collection assembly into the interior of the bottom shell; If T2 < T<T1, then maintain the current state, that is, maintain the current internal motor speed and maintain the current extended state of the water collection component; If Tinternal ≤ T2, then proceed to the judgment condition 2, compare the relationship between the internal motor speed R1 and the maximum speed R, and control whether the internal motor speed increases or not based on the comparison result.

13. The control method according to claim 11, characterized in that: In the aforementioned judgment step, when Tinternal ≤ T2, the judgment condition 2 is entered: comparing the relationship between the internal motor speed R1 and the maximum speed R. If R1≥R, and the internal motor speed cannot be increased, then proceed to judgment condition 3: compare the relationship between the compressor operating frequency F1 and the lowest frequency F, and perform control actions according to the following judgment: If F1≤F, the compressor is controlled to operate at the lowest frequency F, and the time T is detected within ΔT. If T≤T2, the defrosting mode is entered, the compressor is controlled to stop running, the current speed of the internal motor is maintained, and the water collection component is controlled to extend to start defrosting. If T>T1, the internal fan speed and compressor frequency are restored to the state before adjustment, and the water collection component is controlled to retract. If T2 < T_internal ≤ T1, then maintain the current internal fan speed, compressor frequency, and the extended state of the water collection assembly.

14. The control method according to claim 11, characterized in that: In the aforementioned judgment step, when Tinternal ≤ T2, the judgment condition 2 is entered: comparing the relationship between the internal motor speed R1 and the maximum speed R. If R1≥R, and the internal motor speed cannot be increased, then proceed to judgment condition 3: compare the relationship between the compressor operating frequency F1 and the lowest frequency F, and perform control actions according to the following judgment: If F1 > F, then the operating frequency of the compressor is reduced, and within the time interval ΔT, F1 and T are detected, and control actions are performed according to the following determination: If Tinternal > T1, then restore the internal fan speed and compressor frequency to the state before adjustment, and control the water collection component to retract; if T2 < Tinternal ≤ T1, then maintain the current internal fan speed, compressor frequency, and the extended state of the water collection component; if Tinternal ≤ T2, then continue to the judgment condition 3: compare the relationship between the compressor operating frequency F1 and the lowest frequency F value, and control whether the compressor frequency is reduced according to the comparison result.

15. The control method according to claim 10, characterized in that: The detection step occurs when the air conditioner is detected to be operating in heating mode; The control step involves controlling the water collection component (3) to move out of the bottom shell (1) and extend below the air outlet (2), and injecting water into the water collection component (3).

16. An air conditioner, characterized in that: An air conditioning indoor unit that is resistant to water blowing, as described in any one of claims 1-9.

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