Vertical air conditioner and control method thereof

Abstract

The present invention provides a vertical air conditioner and a control method thereof, wherein the vertical air conditioner includes an indoor unit, the indoor unit including: a housing on which at least one air outlet is provided; at least one transverse swing blade correspondingly provided at the air outlet, for controlling the vertical direction of the airflow flowing out of the corresponding air outlet; and the control method includes: when the vertical air conditioner enters the cooling mode, continuously detecting the temperature of the indoor heat exchanger of the vertical air conditioner; determining whether the indoor heat exchanger temperature is less than or equal to the overcooling protection temperature threshold; and if so, controlling at least one transverse swing blade to be in an upward blowing position to promote the upward flow of the airflow. The control method of the vertical air conditioner of the present invention can effectively prevent the vertical air conditioner from shutting down or reducing the frequency of the compressor due to the excessively low surface temperature of the indoor heat exchanger during the cooling process, and ensure the temperature uniformity in the indoor space, thereby improving the user experience of the air conditioner.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to a vertical air conditioner and a control method thereof. Background Art

[0002] With the development of science and technology, people's living standards are constantly improving. People's cooling and heating needs in different scenarios are also different. As a result, there are more and more types of air conditioners, such as wall-mounted air conditioners, floor-standing air conditioners, vertical air conditioners, ceiling air conditioners, and central air conditioners. Vertical air conditioners and floor-standing air conditioners are especially popular among users because of their large air volume, small footprint, and more importantly, their aesthetics.

[0003] Currently, in the existing technology, since cold air automatically sinks and hot air rises, during the cooling process of a floor-standing air conditioner, cold air will accumulate in the lower part of the room. Floor-standing air conditioners are generally installed on the ground, and their location is relatively low. This will cause the cold air to circulate in the lower part of the room. The lower cold air will enter the air conditioner through the air inlet, thereby causing the surface temperature of the indoor heat exchanger to continue to drop. If it drops to around 0°C, due to the protection mechanism of the indoor heat exchanger of the indoor unit, the air conditioner will shut down or its compressor will reduce the frequency. In this way, during the cooling process of a floor-standing or vertical air conditioner, it will frequently reduce the frequency and shut down before it can lower the temperature in the upper part of the room, causing indoor temperature fluctuations and reducing the user experience of the air conditioner. Summary of the Invention

[0004] An object of the present invention is to provide a vertical air conditioner and a control method thereof that can solve at least one of the above-mentioned drawbacks in the prior art.

[0005] A further purpose of the present invention is to effectively prevent the air conditioner from shutting down or reducing the frequency of the compressor due to the low surface temperature of the indoor heat exchanger during the cooling process, and to ensure the uniformity of the temperature in the indoor space, thereby improving the user experience of the air conditioner.

[0006] In particular, the present invention provides a control method for a vertical air conditioner, wherein the vertical air conditioner includes an indoor unit, and the indoor unit includes:

[0007] a housing, on which at least one air outlet is provided;

[0008] At least one transverse swing blade is provided at the air outlet, and is used to control the vertical direction of the airflow flowing out of the corresponding air outlet; and

[0009] Control methods include:

[0010] When the vertical air conditioner enters the cooling mode, the indoor heat exchanger temperature of the vertical air conditioner is continuously detected;

[0011] Determine whether the indoor heat exchanger temperature is less than or equal to the overcooling protection temperature threshold;

[0012] If so, control at least one transverse swing blade to be in an upward blowing position to promote the airflow to flow upward.

[0013] Furthermore, after the step of controlling at least one transverse swing blade to be in an upward blowing position for causing the airflow to flow upward, the control method further includes:

[0014] Wait for the vertical air conditioner to run for a preset time;

[0015] Acquire a first average temperature value of a plurality of different regions at a first height and a second average temperature value of a plurality of different regions at a second height of an indoor space served by an indoor unit of a vertical air conditioner;

[0016] Calculate the difference between the first average temperature value and the second average temperature value;

[0017] Determine whether the difference is greater than or equal to a preset value;

[0018] If so, determining whether the indoor heat exchanger temperature is less than or equal to the overcooling protection temperature threshold;

[0019] When it is confirmed that the temperature of the indoor heat exchanger is less than or equal to the overcooling protection temperature threshold, the indoor fan speed of the vertical air conditioner is increased.

[0020] Furthermore, when it is confirmed that the temperature of the indoor heat exchanger is greater than the overcooling protection temperature threshold, the control method includes:

[0021] The current position of at least one transverse swing blade is maintained unchanged, and the current speed of the indoor fan is maintained unchanged.

[0022] Furthermore, after the step of increasing the speed of the indoor fan of the vertical air conditioner, the process returns to the step of waiting for the vertical air conditioner to run for a preset time; and

[0023] Before the step of determining whether the temperature of the indoor heat exchanger is less than or equal to the overcooling protection temperature threshold, the control method further includes:

[0024] Get the number of times the indoor fan speed of the vertical air conditioner is increased;

[0025] Determine whether the number of executions is greater than or equal to once;

[0026] If so, perform the steps for increasing the indoor fan speed of the vertical air conditioner;

[0027] If not, the step of determining whether the temperature of the indoor heat exchanger is less than or equal to the overcooling protection temperature threshold is performed.

[0028] Furthermore, when the difference is less than a preset value, the control method further includes:

[0029] Determine whether the indoor heat exchanger temperature is greater than the overcooling protection temperature threshold;

[0030] If so, keep the current position of at least one horizontal swing blade unchanged and keep the current indoor fan speed unchanged;

[0031] If not, reduce the frequency of the compressor of the vertical air conditioner, or control the compressor of the vertical air conditioner to stop.

[0032] Furthermore, after executing the step of maintaining the current position of at least one transverse swing blade unchanged and maintaining the current indoor fan speed unchanged, executing the step of waiting for the vertical air conditioner to run for a preset time.

[0033] Furthermore, before the step of reducing the compressor frequency of the vertical air conditioner or controlling the compressor of the vertical air conditioner to stop, the control method further includes:

[0034] Detect the number of times the indoor fan speed is increased;

[0035] Determine whether the number of increases is greater than or equal to one;

[0036] If so, perform the steps for increasing the indoor fan speed of the vertical air conditioner;

[0037] If not, the step of reducing the frequency of the compressor of the vertical air conditioner or controlling the compressor of the vertical air conditioner to stop is performed.

[0038] Furthermore, when it is confirmed that the number of increases is greater than or equal to one or the number of executions is greater than or equal to one and before the step of increasing the speed of the indoor fan of the vertical air conditioner, the control method further includes:

[0039] Determine whether the indoor fan speed is greater than or equal to the maximum fan speed;

[0040] If not, follow the steps for increasing the indoor fan speed of the vertical air conditioner;

[0041] If so, the step of reducing the frequency of the compressor of the vertical air conditioner or controlling the compressor of the vertical air conditioner to stop is performed.

[0042] In particular, the present invention further provides a vertical air conditioner, including an indoor unit, the indoor unit including:

[0043] a housing, on which at least one air outlet is provided;

[0044] At least one transverse swing blade, correspondingly provided at the air outlet, for controlling the vertical direction of the airflow flowing out of the corresponding air outlet;

[0045] The controller includes a memory and a processor, wherein the memory stores a machine executable program, and when the machine executable program is executed by the processor, the control method of the vertical air conditioner is realized.

[0046] Furthermore, the air outlet includes an upper air outlet and a lower air outlet arranged in an up-down direction, and the upper air outlet is located above the lower air outlet;

[0047] The transverse swing blades include upper transverse swing blades correspondingly arranged at the upper air outlet and lower transverse swing blades arranged at the lower air outlet.

[0048] The control method for a vertical air conditioner of the present invention can control at least one horizontal swing blade to an upward blowing position that promotes upward airflow when the indoor heat exchanger temperature is less than or equal to the overcooling protection temperature threshold. Consequently, the cooling airflow can continue to flow toward the upper portion of the indoor space and more fully exchange heat with the hot air therein, effectively alleviating the situation in which cold air accumulates in the lower portion of the indoor space and participates in the refrigeration cycle of the vertical air conditioner. Therefore, the control method for a vertical air conditioner of the present invention can effectively prevent the air conditioner from shutting down or reducing the compressor frequency due to excessively low indoor heat exchanger surface temperature during the cooling process, ensure temperature uniformity in the indoor space, and enhance the user experience of the air conditioner.

[0049] The vertical air conditioner of the present invention can implement the control method of the vertical air conditioner of the present invention. Therefore, the vertical air conditioner of the present invention also has the beneficial technical effects of the control method of the vertical air conditioner.

[0050] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0052] Figure 1 is a schematic structural diagram of an indoor unit of a vertical air conditioner according to an embodiment of the present invention;

[0053] Figure 2 is a schematic diagram of a connection block of a vertical air conditioner according to an embodiment of the present invention;

[0054] Figure 3 is a flow chart of a method for controlling a vertical air conditioner according to an embodiment of the present invention;

[0055] Figure 4 FIG. 4 is a flow chart of a method for controlling a vertical air conditioner according to another embodiment of the present invention. DETAILED DESCRIPTION

[0056] In the description of this embodiment, it should be understood that the terms "horizontal", "upper", "lower", "front", "back", "left", "right", "vertical", "bottom", "inside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0057] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or more of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0058] Unless otherwise specified or limited, terms such as "disposed" and "connected" should be interpreted broadly. For example, they can refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise specified. A person of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0059] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact via another feature between them. That is, in the description of this embodiment, the first feature being "above," "above," and "above" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below," "below," or "below" the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0060] Unless otherwise defined, all terms (including technical terms and scientific terms) used in the description of this embodiment have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0061] In the description of the present embodiment, reference to the term "embodiment" or the like indicates that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0062] The following combination Figure 1 and Figure 2 The vertical air conditioner of this embodiment will be described in detail.

[0063] Figure 1 is a structural diagram of an indoor unit of a vertical air conditioner according to an embodiment of the present invention, referring to Figure 1 In this embodiment, a vertical air conditioner includes an indoor unit 100, which includes a housing 110, at least one horizontal swing blade, and a controller 200. The housing 110 is provided with at least one air outlet 111; at least one horizontal swing blade 120 is provided corresponding to the air outlet, and the at least one horizontal swing blade 120 is used to control the vertical direction of the airflow flowing out of the corresponding air outlet; the controller 200 includes a memory 210 and a processor 220, wherein the memory 210 stores a machine executable program 211, and when the machine executable program 211 is executed by the processor 220, it implements the control method of the vertical air conditioner of the following embodiment. Furthermore, the beneficial technical effects of the control method of the vertical air conditioner of the following embodiment are also possessed by the vertical air conditioner of this embodiment.

[0064] Reference Figure 1 In this embodiment, the air outlet 111 includes an upper air outlet 1111 and a lower air outlet 1112 arranged in the up and down directions, and the upper air outlet 1111 is located above the lower air outlet 1112; the transverse swing blade 120 includes an upper transverse swing blade 121 corresponding to the upper air outlet 1111 and a lower transverse swing blade 122 corresponding to the lower air outlet 1112.

[0065] Reference Figure 1 In this embodiment, the height H of the indoor unit 100 is 2 meters, and the distance L between the bottom of the lower air outlet 1112 and the bottom of the indoor unit 100 is 0.2 meters.

[0066] Figure 2 is a schematic diagram of a connection block of a vertical air conditioner according to an embodiment of the present invention; Figure 2In this embodiment, the indoor unit 100 of the vertical air conditioner further includes an indoor heat exchange temperature sensor 230. The indoor heat exchange temperature sensor 230 is disposed on the indoor heat exchanger and is connected to the controller 200. The indoor heat exchange temperature sensor 230 can obtain or detect the indoor heat exchanger temperature of the vertical air conditioner.

[0067] Reference Figure 1 and Figure 2 In this embodiment, the floor-standing air conditioner further includes multiple first-height ambient temperature sensors 240 and multiple second-height ambient temperature sensors 250. The multiple first-height ambient temperature sensors 240 can be installed on a wall, wardrobe, or item placed in the indoor space at a first height from the indoor floor, or can be installed on the housing 110 at a first height from the indoor floor. The multiple second-height ambient temperature sensors can be installed on a wall, wardrobe, or item placed in the indoor space at a second height from the indoor floor, or can be installed on the housing 110 at a second height from the indoor floor. The multiple first-height ambient temperature sensors 240 can obtain multiple first temperature values ​​for multiple different areas at a first height in the indoor space served by the indoor unit 100 of the floor-standing air conditioner, and the multiple second-height ambient temperature sensors 250 can obtain multiple second temperature values ​​for multiple different areas at a second height in the indoor space served by the indoor unit 100 of the floor-standing air conditioner. The first-height ambient temperature sensors 240 and the second-height ambient temperature sensors 250 are connected to the controller 200.

[0068] In this embodiment, the first height is 0.2 meters and the second height is 1.8 meters. Multiple first-height ambient temperature sensors 240 can be arranged at the leftmost position, rightmost position, rightmost front position, and leftmost front position of the stand-up air conditioner; multiple second-height ambient temperature sensors 250 can be arranged at the leftmost position, rightmost position, rightmost front position, and leftmost front position of the stand-up air conditioner.

[0069] The following combination Figures 3 and 4 The control method of the vertical air conditioner of this embodiment is described in detail.

[0070] Figure 3 is a flow chart of a control method for a vertical air conditioner according to an embodiment of the present invention, referring to Figure 3 In this embodiment, the control method of the vertical air conditioner includes:

[0071] Step S302: When the vertical air conditioner enters the cooling mode, continuously detecting the temperature of the indoor heat exchanger of the vertical air conditioner;

[0072] Step S304, determining whether the temperature of the indoor heat exchanger is less than or equal to the overcooling protection temperature threshold; if so, executing step S306.

[0073] Step S306: Control at least one transverse swing blade to be in an upward blowing position to promote the airflow to flow upward.

[0074] The control method for a vertical air conditioner of this embodiment can control at least one lateral swing blade to an upward blowing position that promotes upward airflow when the indoor heat exchanger temperature is less than or equal to the overcooling protection temperature threshold. Consequently, the cooling airflow can continuously flow toward the upper portion of the indoor space and more fully exchange heat with the hot air therein, effectively alleviating the situation where cold air accumulates in the lower portion of the indoor space and participates in the refrigeration cycle of the vertical air conditioner. Therefore, the control method for a vertical air conditioner of this embodiment can effectively prevent the air conditioner from shutting down or reducing the compressor frequency due to excessively low indoor heat exchanger surface temperature during the cooling process, ensure temperature uniformity in the indoor space, and enhance the user experience of the air conditioner.

[0075] In addition, step S306 may also be to control the upper transverse swing blade and / or the lower transverse swing blade to be in an upward blowing position to promote the airflow to flow upward. The overcooling protection temperature threshold may be 0°C, -1°C, 1°C, etc.

[0076] Figure 4 is a flow chart of a control method for a vertical air conditioner according to another embodiment of the present invention, referring to Figure 4 In this embodiment, the control method of the vertical air conditioner includes:

[0077] Step S402: When the vertical air conditioner enters the cooling mode, continuously detecting the temperature of the indoor heat exchanger of the vertical air conditioner;

[0078] Step S404, determining whether the temperature of the indoor heat exchanger is less than or equal to the overcooling protection temperature threshold; if so, executing step S406; if not, executing step S420 in the following embodiment.

[0079] Step S406: controlling at least one transverse swing blade to be in an upward blowing position to promote the airflow to flow upward.

[0080] Step S408: Wait for the vertical air conditioner to run for a preset time.

[0081] Step S410 , obtaining a first average temperature value of a plurality of different areas at a first height and a second average temperature value of a plurality of different areas at a second height of an indoor space served by an indoor unit of a vertical air conditioner.

[0082] Step S412: Calculate the difference between the first average temperature value and the second average temperature value.

[0083] Step S414, determine whether the difference is greater than or equal to a preset value; if so, execute step S416; if not, execute step S426 in the following embodiment.

[0084] Step S416, determine whether the indoor heat exchanger temperature is less than or equal to the supercooling protection temperature threshold; if so, that is, when it is confirmed that the indoor heat exchanger temperature is less than or equal to the supercooling protection temperature threshold, execute step S418; if not, you can execute step S420 in the following embodiment.

[0085] Step S418: increasing the speed of the indoor fan of the vertical air conditioner.

[0086] It can be understood that, through steps S410 to S414, it can be effectively determined whether the low temperature of the indoor heat exchanger in the cooling mode of the air conditioner is caused by uneven temperature in the indoor space, and if so, it can be determined through step S416 whether the problem of the low temperature of the indoor heat exchanger in the cooling mode of the air conditioner has been solved by executing steps S406 and S408. If it is not solved, that is, after executing steps S406 and S408, the indoor heat exchanger temperature is still less than or equal to the overcooling protection temperature threshold, then the indoor fan speed of the vertical air conditioner can be increased through step S418 to further increase the continuous flow of the cooling airflow to the upper part of the indoor space and the effect of more sufficient heat exchange with the hot air in the upper part, thereby further alleviating the situation where cold air gathers in the lower part of the indoor space and participates in the refrigeration cycle of the vertical air conditioner.

[0087] Reference Figure 4 In this embodiment, when it is confirmed that the indoor heat exchanger temperature is greater than the overcooling protection temperature threshold, that is, when it is confirmed in step S416 that the indoor heat exchanger temperature is greater than the overcooling protection temperature threshold, the control method further includes:

[0088] Step S420: Keep the current position of at least one transverse swing blade unchanged, and keep the current indoor fan speed unchanged.

[0089] It can be understood that when steps S410 to S414 are executed for the first time, it is effectively determined that the low temperature of the indoor heat exchanger in the cooling mode of the air conditioner is caused by uneven temperature in the indoor space, and when it is confirmed through step S416 that the indoor heat exchanger temperature is greater than the overcooling protection temperature threshold, it indicates that through step S406, at least one horizontal swing blade is controlled to be in an upward blowing position to promote upward airflow, so that the low temperature of the indoor heat exchanger is temporarily resolved, and then step S420 can be used to prevent the indoor heat exchanger temperature from being too low again.

[0090] Reference Figure 4 In this embodiment, when it is determined that the indoor heat exchanger temperature is greater than the supercooling protection temperature threshold, that is, when it is determined in step S404 that the indoor heat exchanger temperature is greater than the supercooling protection temperature threshold, step S420 is executed.

[0091] Reference Figure 4 In this embodiment, after increasing the indoor fan speed of the floor-standing air conditioner, the process returns to the step of waiting for the floor-standing air conditioner to operate for a predetermined period of time, i.e., returning to step S408. This ensures that, through step S418, the indoor fan speed of the floor-standing air conditioner is increased, thereby further alleviating the accumulation of cold air in the lower portion of the indoor space and its participation in the floor-standing air conditioner's refrigeration cycle. Furthermore, during repeated execution of steps S408 through S418, the indoor fan speed may be increased again to further increase the continuous flow of cooling air to the upper portion of the indoor space and to more effectively exchange heat with the warm air in the upper portion, further alleviating the accumulation of cold air in the lower portion of the indoor space and its participation in the floor-standing air conditioner's refrigeration cycle.

[0092] Reference Figure 4 In this embodiment, before the step of determining whether the temperature of the indoor heat exchanger is less than or equal to the overcooling protection temperature threshold, the control method further includes:

[0093] Step S422: obtaining the number of times the speed of the indoor fan of the vertical air conditioner is increased.

[0094] Step S424, determine whether the execution number is greater than or equal to one time; if so, execute the step of increasing the indoor fan speed of the vertical air conditioner, that is, execute step S418; if not, execute the step of determining whether the indoor heat exchanger temperature is less than or equal to the overcooling protection temperature threshold, that is, execute step S416.

[0095] It can be understood that steps S422 and S424 confirm that the control method has determined that the low indoor heat exchanger temperature in the air conditioner's cooling mode is caused by uneven indoor temperature. Furthermore, during repeated execution of steps S408 through S418, as long as step S414 is executed to determine whether the difference is greater than or equal to the preset value, if the difference is greater than or equal to the preset value, it indicates that a temperature difference still exists between the upper and lower portions of the indoor space and that the low indoor heat exchanger temperature is still occurring. Furthermore, during repeated execution of steps S408 through S418, step S416 can be skipped without further confirmation of whether the indoor heat exchanger temperature is too low. Step S418 can then be executed to increase the indoor fan speed of the vertical air conditioner, alleviating the accumulation of cold air in the lower portion of the indoor space and its participation in the refrigeration cycle of the vertical air conditioner, thereby resolving the low indoor heat exchanger temperature and uneven indoor ambient temperature.

[0096] In addition, step S422 may also be to obtain the number of executions of the step "step S416, determining whether the temperature of the indoor heat exchanger is less than or equal to the overcooling protection temperature threshold".

[0097] Reference Figure 4 In this embodiment, when the difference is less than the preset value, the control method further includes:

[0098] Step S426, determine whether the indoor heat exchanger temperature is greater than the overcooling protection temperature threshold; if so, keep the current position of at least one horizontal swing blade unchanged, and keep the current indoor fan speed unchanged, that is, execute step S420; if not, execute step S428.

[0099] Step S428: reducing the frequency of the compressor of the vertical air conditioner, or controlling the compressor of the vertical air conditioner to stop.

[0100] It can be understood that when the difference is less than the preset value, that is, when it is confirmed that the low temperature of the indoor heat exchanger in the cooling mode of the air conditioner is not caused by uneven temperature in the indoor space; if the indoor heat exchanger temperature is greater than the overcooling protection temperature threshold, it means that by controlling at least one transverse swing blade to be in the upward blowing position to promote the upward flow of airflow, the low temperature of the indoor heat exchanger is temporarily resolved, and then step S420 can be performed to ensure that by controlling at least one transverse swing blade to be in the upward blowing position to promote the upward flow of airflow, the indoor heat exchanger temperature is effectively prevented from being too low again; if the indoor heat exchanger temperature is still less than or equal to the overcooling protection temperature threshold, it means that by controlling at least one transverse swing blade to be in the upward blowing position to promote the upward flow of airflow, the low temperature of the indoor heat exchanger cannot be resolved, and then the compressor frequency of the vertical air conditioner is reduced, or the compressor of the vertical air conditioner is controlled to stop, so as to avoid damage to the vertical air conditioner.

[0101] Reference Figure 4 In this embodiment, after maintaining the current position of at least one horizontal swing blade and the current indoor fan speed, the step of waiting for the vertical air conditioner to operate for a predetermined period of time is performed. This continuously and cyclically ensures that the indoor heat exchanger temperature does not drop too low, or resolves the problem of the indoor heat exchanger temperature being too low.

[0102] Reference Figure 4 In this embodiment, before the step of reducing the compressor frequency of the vertical air conditioner or controlling the compressor of the vertical air conditioner to stop, the control method further includes:

[0103] Step S430, detecting the number of times the indoor fan speed is increased, that is, detecting the number of times the step of increasing the indoor fan speed of the vertical air conditioner is executed.

[0104] Step S432, determine whether the number of increases is greater than or equal to one; if so, execute the step of increasing the indoor fan speed of the vertical air conditioner, that is, execute step S418; if not, execute the step of reducing the compressor frequency of the vertical air conditioner, or controlling the compressor of the vertical air conditioner to stop, that is, execute step S428.

[0105] It can be understood that, when the control method has executed the step of increasing the indoor fan speed of the vertical air conditioner, that is, the indoor fan speed has been increased, it indicates that the control method has determined that the low temperature of the indoor heat exchanger in the cooling mode of the air conditioner is caused by the uneven temperature in the indoor space. Then, when step S414 is executed again and it is determined that the difference is less than the preset value and the indoor heat exchanger temperature is still less than or equal to the overcooling protection temperature threshold, although the temperature distribution in the indoor space is uniform, the temperature change on the indoor heat exchanger may be slow, and the indoor heat exchanger temperature is still too low. Then, it is still necessary to increase the indoor fan speed of the vertical air conditioner to speed up the temperature change on the indoor heat exchanger and further solve the problem of too low temperature of the indoor heat exchanger.

[0106] Reference Figure 4 In this embodiment, when it is confirmed that the number of increases is greater than or equal to one or the number of executions is greater than or equal to one and before the step of increasing the speed of the indoor fan of the vertical air conditioner, the control method further includes:

[0107] Step S434, determine whether the indoor fan speed is greater than or equal to the maximum fan speed; if not, execute the step of increasing the indoor fan speed of the vertical air conditioner, that is, execute step S418; if so, execute the step of reducing the compressor frequency of the vertical air conditioner, or controlling the compressor of the vertical air conditioner to stop, that is, execute step S428.

[0108] It is understandable that after the indoor fan speed is increased to the maximum fan speed, if the temperature of the indoor heat exchanger is still too low, the compressor frequency of the vertical air conditioner can be reduced, or the compressor of the vertical air conditioner can be controlled to stop to avoid damage to the vertical air conditioner.

[0109] In this embodiment, before continuously detecting the temperature of the indoor heat exchanger of the vertical air conditioner in step S302, the control method further includes:

[0110] Detect whether the indoor fan speed of the vertical air conditioner is greater than or equal to the maximum fan speed; if not, perform the step of continuously detecting the indoor heat exchanger temperature of the vertical air conditioner; if so, continue to perform the following steps.

[0111] Determine whether all horizontal swing blades are in the upward blowing position; if so, do nothing; if not, execute the step of continuously detecting the temperature of the indoor heat exchanger of the vertical air conditioner to ensure that the control method of the vertical air conditioner can operate normally.

[0112] At this point, those skilled in the art will recognize that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications consistent with the principles of the present invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

1. A method for controlling a vertical air conditioner, wherein: The vertical air conditioner includes an indoor unit, and the indoor unit includes: a housing, on which at least one air outlet is provided; At least one transverse swing blade is provided at the air outlet, and is used to control the vertical direction of the airflow flowing out of the corresponding air outlet; and The control method includes: When the vertical air conditioner enters a cooling mode, continuously detecting the temperature of the indoor heat exchanger of the vertical air conditioner; Determining whether the temperature of the indoor heat exchanger is less than or equal to an overcooling protection temperature threshold; If so, controlling at least one of the transverse swing blades to be in an upward blowing position to force the airflow to flow upward; Waiting for the vertical air conditioner to operate for a preset time period; Obtaining a first average temperature value of a plurality of different areas at a first height and a second average temperature value of a plurality of different areas at a second height of an indoor space where the indoor unit of the vertical air conditioner acts; calculating a difference between the first average temperature value and the second average temperature value; Determining whether the difference is greater than or equal to a preset value; When the difference is greater than or equal to the preset value, obtaining the number of executions of increasing the speed of the indoor fan of the vertical air conditioner; Determining whether the execution count is greater than or equal to one; When the execution frequency is greater than or equal to one, the speed of the indoor fan of the vertical air conditioner is increased.

2. The control method of a vertical air conditioner according to claim 1, wherein: If the execution number is less than one, determining whether the temperature of the indoor heat exchanger is less than or equal to the overcooling protection temperature threshold; When it is confirmed that the temperature of the indoor heat exchanger is less than or equal to the overcooling protection temperature threshold, the indoor fan speed of the vertical air conditioner is increased.

3. The control method of a vertical air conditioner according to claim 2, wherein: When it is confirmed that the temperature of the indoor heat exchanger is greater than the overcooling protection temperature threshold, the control method includes: Maintain the current position of at least one of the transverse swing blades unchanged, and maintain the current speed of the indoor fan unchanged.

4. The control method of a vertical air conditioner according to claim 2, wherein: After the step of increasing the speed of the indoor fan of the vertical air conditioner, the method returns to the step of waiting for the vertical air conditioner to operate for a preset time period.

5. The control method of a vertical air conditioner according to claim 4, wherein: When the difference is less than the preset value, the control method further includes: Determining whether the temperature of the indoor heat exchanger is greater than the overcooling protection temperature threshold; If so, maintaining the current position of at least one of the transverse swing blades unchanged, and maintaining the current speed of the indoor fan unchanged; If not, the frequency of the compressor of the vertical air conditioner is reduced, or the compressor of the vertical air conditioner is controlled to stop.

6. The control method of a vertical air conditioner according to claim 5, wherein: After executing the step of maintaining the current position of at least one of the transverse swing blades unchanged and maintaining the current speed of the indoor fan unchanged, executing the step of waiting for the vertical air conditioner to run for a preset time.

7. The control method of a vertical air conditioner according to claim 5, wherein: Before the step of reducing the compressor frequency of the vertical air conditioner or controlling the compressor of the vertical air conditioner to stop, the control method further includes: detecting a number of times the indoor fan speed is increased; Determining whether the number of increases is greater than or equal to one; If so, performing the step of increasing the speed of the indoor fan of the vertical air conditioner; If not, the step of reducing the frequency of the compressor of the vertical air conditioner or controlling the compressor of the vertical air conditioner to stop is performed.

8. The control method of a vertical air conditioner according to claim 7, wherein: When it is confirmed that the number of increases is greater than or equal to one or when it is determined that the number of executions is greater than or equal to one and before the step of increasing the speed of the indoor fan of the vertical air conditioner, the control method further includes: Determining whether the indoor fan speed is greater than or equal to the maximum fan speed; If not, executing the step of increasing the speed of the indoor fan of the vertical air conditioner; If so, the step of reducing the frequency of the compressor of the vertical air conditioner or controlling the compressor of the vertical air conditioner to stop is performed.

9. A vertical air conditioner, comprising an indoor unit, the indoor unit comprising: a housing, on which at least one air outlet is provided; At least one transverse swing blade, correspondingly provided at the air outlet, for controlling the vertical direction of the airflow flowing out of the corresponding air outlet; A controller includes a memory and a processor, wherein the memory stores a machine executable program, and when the machine executable program is executed by the processor, the control method of the vertical air conditioner according to any one of claims 1 to 8 is implemented.

10. The vertical air conditioner according to claim 9, wherein The air outlet includes an upper air outlet and a lower air outlet arranged in an up-down direction, and the upper air outlet is located above the lower air outlet; The transverse swing blades include upper transverse swing blades correspondingly arranged at the upper air outlet and lower transverse swing blades arranged at the lower air outlet.

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