Air supply components, cabinet air conditioners and control methods

Abstract

This application discloses an air supply component, a cabinet air conditioner, and a control method, belonging to the field of air conditioning. The air supply component includes a first fan, which is a single-intake, single-outlet centrifugal fan with a first air inlet and a first air outlet; a second fan, which is a double-intake, double-outlet centrifugal fan with a second air inlet, a third air inlet, a second air outlet, and a third air outlet; a main air duct with the second fan located on it; and an auxiliary air duct with the first fan located on it. This application's embodiment features a single-intake, single-outlet centrifugal fan as the first fan, resulting in a smaller size and less likelihood of affecting the normal airflow of the upper or lower air outlet ducts. This allows for the simultaneous installation of both the first and second fans within the cabinet air conditioner, without increasing the overall size of the unit. The first and second fans provide a larger air volume, achieving the technical effect of increasing the airflow of the air conditioner within a limited size.

Description

Technical Field

[0001] This application relates to the field of air conditioning, and more specifically, to an air supply component, a cabinet air conditioner, and a control method. Background Technology

[0002] Air conditioning can improve indoor temperature and enhance user comfort. However, the rate at which an air conditioner improves indoor temperature depends on its airflow. If the airflow is low, it takes longer to adjust the indoor temperature to the user's set temperature, resulting in a decreased user experience.

[0003] To address these issues, existing air conditioners increase airflow by adding more fans or increasing their size. However, this approach results in larger air conditioners that take up more space and increase costs. Summary of the Invention

[0004] This application provides an air supply component, a cabinet air conditioner, and a control method to at least solve the technical problem of increasing the air volume of an air conditioner within a limited size.

[0005] According to a first aspect of the embodiments of this application, an air supply assembly is provided for use in a cabinet air conditioner with top and bottom air outlets. The cabinet air conditioner is provided with a top air outlet, a bottom air outlet, and a rear air inlet. The air supply assembly includes:

[0006] The first fan is a single-intake, single-outlet centrifugal fan, which has a first air inlet and a first air outlet. The axial direction of the first fan is the front-to-back direction of the cabinet air conditioner.

[0007] The second fan is a double-intake, double-outlet centrifugal fan, which has a second air inlet, a third air inlet, a second air outlet, and a third air outlet. The second air inlet and the third air inlet are connected to the rear air inlet, the second air outlet is connected to the upper air outlet, and the third air outlet is connected to the lower air outlet. The axial direction of the second fan is the left-right direction of the cabinet air conditioner.

[0008] The main air duct connects the upper air outlet and the lower air outlet; the second fan is located on the main air duct, and the main air duct includes:

[0009] The upper air outlet duct connects the second air outlet of the second fan to the upper air outlet.

[0010] The lower air outlet duct connects the third air outlet of the second fan to the lower air outlet;

[0011] The air supply assembly also includes an auxiliary air duct located on one side of the main air duct, connecting the rear air inlet and the upper air outlet; the first fan is disposed on the auxiliary air duct, wherein the first air inlet of the first fan is correspondingly connected to the rear air inlet, and the first air outlet is correspondingly connected to the upper air outlet.

[0012] The main air duct control component can control the main air duct to achieve simultaneous airflow from the upper and lower air ducts, airflow from only the upper air duct, airflow from only the lower air duct, or no airflow from either the upper or lower air ducts.

[0013] The auxiliary air duct control component can control the auxiliary air duct to achieve upward airflow or no airflow.

[0014] The air supply assembly is equipped with multiple air supply modes based on the air control functions of the main air duct control assembly and the auxiliary air duct control assembly.

[0015] In this embodiment, the first fan in the air supply assembly is a single-intake, single-outlet centrifugal fan. Therefore, the first fan is small in size and is less likely to affect the normal airflow of the upper or lower air outlet duct. This allows the first fan and the second fan to be installed simultaneously in the cabinet air conditioner equipped with the air supply assembly, without increasing the size of the cabinet air conditioner. The first fan and the second fan can provide a larger air supply volume, achieving the goal of increasing the air volume of the air conditioner within a limited size.

[0016] In conjunction with the first aspect, in one optional implementation of the embodiments of this application, the first air inlet faces the rear air inlet;

[0017] Both the second and third air inlets are located in the axial direction of the second fan;

[0018] The axes of the first fan and the second fan are perpendicular to each other.

[0019] In this implementation, the first air inlet faces the rear air inlet, so that the first fan is installed vertically inside the cabinet air conditioner. This helps to reduce the horizontal space occupied by the first fan in the cabinet air conditioner, thereby controlling the horizontal width of the cabinet air conditioner equipped with the air supply component.

[0020] In conjunction with the first aspect, in one optional implementation of the embodiments of this application, the diameter of the second fan is greater than or equal to the sum of the radial length of the first fan and the width of the upper air outlet duct.

[0021] This implementation method helps to reduce the space occupied by the first fan in the horizontal direction of the air supply assembly, thereby reducing the volume of the air supply assembly, while ensuring that the air supply assembly has two fans and increasing the air supply volume.

[0022] In conjunction with the first aspect, in one optional implementation of the embodiments of this application, the width of the lower air outlet duct is greater than the width of the upper air outlet duct.

[0023] In this implementation, the width of the upper air outlet duct is smaller than the width of the lower air outlet duct, which increases the air velocity when the second fan delivers air to the upper air outlet duct, thereby improving the heat exchange efficiency of the air supply component when it delivers air to the upper air outlet.

[0024] In conjunction with the first aspect, in one optional implementation of the embodiments of this application, the auxiliary air duct is located between the upper air outlet duct and the rear air inlet.

[0025] In conjunction with the first aspect, in an optional implementation of the embodiments of this application, the first fan is located above the second fan and the first fan is located on the upper half of the air supply assembly.

[0026] In this implementation, the first fan is located on the upper half of the air supply assembly, which enables the first fan to efficiently supply air to the upper part of the air supply assembly, thereby improving the heat exchange efficiency when the air supply assembly discharges air.

[0027] According to a second aspect of the embodiments of this application, a cabinet-type air conditioner is provided, including a casing and a heat exchanger;

[0028] The rear side of the housing is provided with a rear air inlet, the upper side of the housing is provided with a selectively openable and closable upper air outlet, and the lower side of the housing is provided with a selectively openable and closable lower air outlet.

[0029] The heat exchanger is located inside the outer casing and near the rear air inlet.

[0030] The heat exchanger has the aforementioned air supply assembly installed inside its outer casing on the side away from the rear air inlet.

[0031] Using this implementation method, the cabinet air conditioner is equipped with an air supply component. The first fan in the air supply component is a single-intake, single-outlet centrifugal fan. Therefore, the first fan is small in size and does not easily affect the normal air outlet of the upper or lower air outlet duct. This allows the cabinet air conditioner with the air supply component to simultaneously install the first fan and the second fan without increasing the size of the cabinet air conditioner. The first fan and the second fan can provide a larger air supply volume, achieving the goal of increasing the air volume of the air conditioner within a limited size.

[0032] In conjunction with the second aspect, in an optional implementation of this application embodiment, the air supply assembly is the air supply assembly described above, and the centerline between the first fan and the second fan coincides with the centerline of the heat exchanger.

[0033] And / or the distance between the centers of the first fan and the second fan is L1, the length of the heat exchanger is L, and L1 / L is between 0.4 and 0.6.

[0034] This implementation method is beneficial to increase the air intake range of the first and second fans, thereby increasing the air supply volume of the first and second fans.

[0035] According to a third aspect of the embodiments of this application, a control method for a cabinet-type air conditioner as described above is provided, the method comprising:

[0036] The operating mode, set temperature, and indoor temperature of the cabinet air conditioner are obtained periodically.

[0037] The initial air supply mode is determined based on the operating mode and indoor temperature.

[0038] As the difference between the indoor temperature and the set temperature changes, the cabinet air conditioner is controlled to switch air supply modes based on the initial air supply mode.

[0039] The different air supply modes have different air supply volumes.

[0040] When the difference becomes smaller, the system switches to an air supply mode with an air volume smaller than the initial air supply mode, or switches to an air supply mode with a number of fans started less than the number of fans in the initial air supply mode.

[0041] In conjunction with the third aspect, in an optional implementation of the embodiments of this application, controlling the cabinet air conditioner to switch air supply modes based on the initial air supply mode as the difference between the indoor temperature and the set temperature changes includes:

[0042] Determine whether the absolute value of the difference between the periodically acquired indoor temperature and the set temperature does not exceed a preset first temperature difference threshold.

[0043] If so, switch to an air supply mode with an air supply volume less than the initial air supply mode or switch to an air supply mode with a number of fans started less than the number of the initial air supply mode.

[0044] Determine whether the absolute value of the difference between the periodically acquired indoor temperature and the set temperature is not less than a preset second temperature difference threshold.

[0045] If so, switch back to the initial air supply mode.

[0046] In conjunction with the third aspect, in an optional implementation of the embodiments of this application, determining the initial air supply mode based on the operating mode and the indoor temperature includes:

[0047] When the operating mode is cooling, if the indoor temperature is not less than a preset first temperature threshold, the first air supply mode is used as the initial air supply mode; if the indoor temperature is between the first temperature threshold and a preset second temperature threshold, the second air supply mode is used as the initial air supply mode; if the indoor temperature is not greater than the second temperature threshold, the third air supply mode is used as the initial air supply mode. The air supply volume of the first air supply mode, the second air supply mode and the third air supply mode decreases sequentially, and the air supply volume of the third air supply mode is not the minimum air supply volume among all air supply modes.

[0048] When the operating mode is heating, if the indoor temperature is not greater than a preset third temperature threshold, the first air supply mode is used as the initial air supply mode; if the indoor temperature is between the third temperature threshold and a preset fourth temperature threshold, the third air supply mode is used as the initial air supply mode; if the indoor temperature is not less than the fourth temperature threshold, the fourth air supply mode is used as the initial air supply mode. The air supply volume of the first air supply mode, the second air supply mode, and the fourth air supply mode decreases sequentially, and the air supply volume of the fourth air supply mode is the minimum air supply volume among all air supply modes.

[0049] In conjunction with the third aspect, in an optional implementation of this application embodiment, if the operating mode is cooling and the initial air supply mode is the first air supply mode or the second air supply mode, then before determining whether the absolute value of the difference between the periodically acquired indoor temperature and the set temperature is not less than a preset second temperature difference threshold, the method further includes:

[0050] The degree to which the indoor temperature deviates from the set temperature is determined by using two consecutive indoor temperature readings and the set temperature.

[0051] If the first degree is not greater than the preset first deviation threshold, then switch to an air supply mode with an air volume less than the current air supply mode or switch to an air supply mode with a number of fans started less than the number of the current air supply mode.

[0052] If the operating mode is heating and the initial air supply mode is the first air supply mode, then before determining whether the absolute value of the difference between the periodically acquired indoor temperature and the set temperature is not less than a preset second temperature difference threshold, the method further includes:

[0053] The second degree of deviation of the indoor temperature from the set temperature is determined by using two consecutive indoor temperature measurements and the set temperature.

[0054] If the second degree is not greater than the preset second deviation threshold, then switch to an air supply mode with an air volume less than the current air supply mode or switch to an air supply mode with a number of fans started less than the number of fans in the current air supply mode.

[0055] The technical effects achieved by the third aspect are similar to those achieved by the corresponding technical means in the first and second aspects, and will not be elaborated further here. Attached Figure Description

[0056] Figure 1 This is a schematic diagram of a cabinet-type air conditioner provided in an embodiment of this application;

[0057] Figure 2 This is a cross-sectional view of the first fan provided in an embodiment of this application;

[0058] Figure 3 This is a cross-sectional view of the second fan provided in an embodiment of this application;

[0059] Figure 4 This refers to the airflow direction in the top and bottom air outlet mode 1 provided in the embodiments of this application;

[0060] Figure 5 This refers to the airflow direction in the up-and-down air outlet mode 2 provided in the embodiments of this application;

[0061] Figure 6 This refers to the airflow direction in the single-top air outlet mode 1 provided in the embodiments of this application;

[0062] Figure 7 This refers to the airflow direction in the single-top air outlet mode 2 provided in the embodiments of this application;

[0063] Figure 8 This refers to the airflow direction in the single-outlet mode provided in the embodiments of this application;

[0064] Figure 9 This is a schematic diagram showing the positional relationship between the first fan, the second fan, and the heat exchanger provided in an embodiment of this application;

[0065] Figure 10 This is a schematic diagram of the air inlet range of the first and second fans provided in the embodiments of this application;

[0066] Figure 11 This is a refrigeration process diagram of the control method provided in the embodiments of this application in a specific application;

[0067] Figure 12 This is a flowchart illustrating the heating process of the control method provided in the embodiments of this application in a specific application.

[0068] Labeling Explanation: 1. First Fan; 11. First Air Inlet; 12. First Air Outlet; 2. Second Fan; 21. Second Air Inlet; 22. Third Air Inlet; 23. Second Air Outlet; 24. Third Air Outlet; 3. Main Air Duct; 31. Upper Air Outlet Duct; 32. Lower Air Outlet Duct; 4. Auxiliary Air Duct;

[0069] 101. Upper air outlet; 103. Lower air outlet; 105. Outer casing; 107. Heat exchanger; 109. Rear air inlet. Detailed Implementation

[0070] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0071] It should be understood that "multiple" as mentioned herein refers to two or more. In the description of the embodiments of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B; "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, to facilitate a clear description of the technical solutions of the embodiments of this application, the terms "first," "second," etc., are used in the embodiments of this application to distinguish identical or similar items with substantially the same function and effect. Those skilled in the art will understand that the terms "first," "second," etc., do not limit the quantity or execution order, and the terms "first," "second," etc., do not necessarily imply differentness.

[0072] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0073] Current air conditioners with top and bottom air outlets generally have low air volume, which makes it difficult to improve their energy efficiency. To increase air volume, it is usually necessary to increase the size of the fan, which makes the air conditioner bulky, affecting its appearance and increasing costs.

[0074] Based on this, embodiments of this application provide an air supply component, a cabinet air conditioner, and a control method, which have at least one of the following characteristics:

[0075] 1. The air conditioner of this application can increase the total air volume of existing top and bottom air outlet air conditioners;

[0076] 2. The air conditioner of this application can increase the single-upper-airflow air volume of existing top-and-bottom air-discharge air conditioners;

[0077] 3. The air conditioner fan assembly method of this application can reduce the size of the air conditioner casing;

[0078] 4. The air conditioner of this application has multiple air supply modes (top and bottom air supply, single top air supply, single bottom air supply) and can select different air supply modes according to the room load.

[0079] At least one of the following problems needs to be addressed:

[0080] 1. It solves the problem of low air volume in existing top and bottom air outlet air conditioners, as well as the problems of large casing size and high cost in existing top and bottom air outlet air conditioners;

[0081] 2. This solves the problem that existing air conditioners with top and bottom air outlets cannot simultaneously meet the air supply modes of top and bottom air outlets, single top air outlet, and single bottom air outlet.

[0082] Specifically, the characteristics and problems mentioned above have the following corresponding relationships:

[0083] Feature 1: The upper fan adopts a rear-inlet single-suction single-outlet fan, and the lower fan adopts a side-inlet double-suction double-outlet fan, with the two fans combined for air delivery.

[0084] Feature 1 addresses the following technical issues: effectively utilizing the interior space of the air conditioner, and making the fan size large enough within a limited space.

[0085] Feature 1 has the following technical effects: it can increase the total air volume of air conditioners with both top and bottom air outlets.

[0086] Feature 2: When the air is supplied from the top, the air outlet of the lower fan supplies air together with the upper fan.

[0087] Feature 2 addresses the technical issues of: when only the top fan is supplying air, the bottom fan can supplement the air supply.

[0088] Feature 2 has the following technical effects: it can increase the single top airflow of air conditioners with top and bottom air outlets.

[0089] It should be noted that:

[0090] Single-intake single-outlet centrifugal fan: refers to a centrifugal fan that can only take in air on one side and has only one outlet.

[0091] Double-intake, double-outlet centrifugal fan: refers to a centrifugal fan that can take in air from both sides and has two air outlets.

[0092] Next, the air supply component provided in this application will be further described, referring to... Figure 1-10 As shown, the air supply assembly is applied to a cabinet air conditioner with top and bottom air outlets. The cabinet air conditioner is provided with an upper air outlet 101, a lower air outlet 103, and a rear air inlet 109. The air supply assembly includes:

[0093] The first fan 1 is a single-intake, single-outlet centrifugal fan, which is provided with a first air inlet 11 and a first air outlet 12. The axial direction of the first fan 1 is the front-to-back direction of the cabinet air conditioner.

[0094] The second fan 2 is a double-intake, double-outlet centrifugal fan, which is provided with a second air inlet 21, a third air inlet 22, a second air outlet 23 and a third air outlet 24. The second air inlet 21 and the third air inlet 22 are connected to the rear air inlet 109, the second air outlet 23 is connected to the upper air outlet 101, and the third air outlet 24 is connected to the lower air outlet 103. The axial direction of the second fan 2 is the left-right direction of the cabinet air conditioner.

[0095] The main air duct 3 connects the upper air outlet 101 and the lower air outlet 103; the second fan 2 is located on the main air duct 3, and the main air duct 3 includes:

[0096] The upper air outlet duct 31 connects the second air outlet 23 of the second fan 2 with the upper air outlet 101;

[0097] The lower air outlet duct 32 connects the third air outlet 24 of the second fan 2 with the lower air outlet 103;

[0098] The air supply assembly also includes an auxiliary air duct 4, located on one side of the main air duct 3, connecting the rear air inlet 109 and the upper air outlet 101; the first fan 1 is disposed on the auxiliary air duct 4, wherein the first air inlet 11 of the first fan 1 is correspondingly connected to the rear air inlet 109, and the first air outlet 12 is correspondingly connected to the upper air outlet 101.

[0099] The main air duct 3 air control component can control the main air duct 3 to achieve simultaneous air output from the upper and lower air ducts, air output from only the upper air duct 31, air output from only the lower air duct 32, or no air output from either the upper or lower air ducts.

[0100] The auxiliary air duct 4 air control component can control the auxiliary air duct 4 to achieve upward airflow or no airflow.

[0101] The air supply assembly is equipped with multiple air supply modes based on the air control functions of the main air duct 3 air control assembly and the auxiliary air duct 4 air control assembly.

[0102] In one embodiment, the first fan 1 has only one air inlet, namely the first air inlet 11, and only one air outlet, namely the first air outlet 12. The first air outlet 12 can be located on the side opposite to the first air inlet 11, or it can be located on other sides of the first fan 1. This embodiment does not specifically limit this.

[0103] In one embodiment, the first fan 1 and the second fan 2 are centrifugal fans with different numbers of air outlets.

[0104] In this embodiment, the first fan 1 in the air supply assembly is a single-intake, single-outlet centrifugal fan. Therefore, the first fan 1 is small in size and is less likely to affect the normal air supply of the upper air outlet duct 31 or the lower air outlet duct 32. This allows the first fan 1 and the second fan 2 to be installed simultaneously in the cabinet air conditioner equipped with the air supply assembly, without increasing the size of the cabinet air conditioner. The first fan 1 and the second fan 2 can provide a larger air supply volume, achieving the goal of increasing the air volume of the air conditioner within a limited size.

[0105] In one possible embodiment of this application, the first air inlet 11 faces the rear air inlet 109;

[0106] The second air inlet 21 and the third air inlet 22 are both located in the axial direction of the second fan 2;

[0107] The axis of the first fan 1 and the axis of the second fan 2 are perpendicular to each other.

[0108] In one embodiment, after the air supply assembly is installed inside the cabinet air conditioner, the cabinet air conditioner has a rear air inlet 109 on the rear side, the first air inlet 11 of the first fan 1 faces the rear side of the air conditioner, that is, the axial direction of the first fan 1 is the front-to-back direction of the air conditioner, and the axial direction of the second fan 2 is the left-to-right direction of the air conditioner.

[0109] In this embodiment, the first air inlet 11 faces the rear air inlet 109, so that the first fan 1 is installed vertically inside the cabinet air conditioner. This helps to reduce the horizontal space occupied by the first fan 1 in the cabinet air conditioner, thereby controlling the horizontal width of the cabinet air conditioner equipped with the air supply component.

[0110] Optionally, in one implementation of this embodiment, the diameter of the second fan 2 is greater than or equal to the sum of the radial length of the first fan 1 and the width of the upper air outlet duct 31.

[0111] This implementation helps to reduce the space occupied by the first fan 1 in the horizontal direction of the air supply assembly, thereby reducing the volume of the air supply assembly, while ensuring that the air supply assembly has two fans and increasing the air supply volume.

[0112] Optionally, in one implementation of this embodiment, the width of the lower air outlet duct 32 is greater than the width of the upper air outlet duct 31.

[0113] In this implementation, the width of the upper air outlet duct 31 is smaller than the width of the lower air outlet duct 32, which increases the air velocity when the second fan 2 sends air to the upper air outlet duct 31, thereby improving the heat exchange efficiency of the air supply assembly when it sends air to the upper air outlet.

[0114] Optionally, in one implementation of this embodiment, the auxiliary air duct 4 is located between the upper air outlet duct 31 and the rear air inlet 109.

[0115] Optionally, in one implementation of this embodiment, the first fan 1 is located above the second fan 2 and the first fan 1 is located on the upper half of the air supply assembly.

[0116] In one embodiment, the air supply assembly has a certain height. The air supply assembly can be divided into an upper half and a lower half based on the middle height of the air supply assembly. Specifically, the part higher than the middle height is the upper half of the air supply assembly, and the part lower than the middle height is the lower half of the air supply assembly.

[0117] In this implementation, the first fan 1 is located on the upper half of the air supply assembly, which enables the first fan 1 to efficiently supply air to the upper part of the air supply assembly and improve the heat exchange efficiency when the air supply assembly is discharging air.

[0118] The cabinet air conditioner provided in this application embodiment includes a housing 105 and a heat exchanger 107;

[0119] The rear side of the housing 105 is provided with a rear air inlet 109, the upper side of the housing 105 is provided with a selectively openable upper air outlet 101, and the lower side of the housing 105 is provided with a selectively openable lower air outlet 103.

[0120] The heat exchanger 107 is located inside the outer casing 105 and near the rear air inlet 109;

[0121] The heat exchanger 107 has the aforementioned air supply assembly installed in its outer casing 105 on the side away from the rear air inlet 109.

[0122] In this implementation, the first fan 1 in the air supply assembly is a single-suction, single-outlet centrifugal fan. Therefore, the first fan 1 is small in size and is less likely to affect the normal air supply of the upper air outlet duct 31 or the lower air outlet duct 32. This allows the first fan 1 and the second fan 2 to be installed simultaneously in the cabinet air conditioner equipped with the air supply assembly, without increasing the size of the cabinet air conditioner. The first fan 1 and the second fan 2 can provide a larger air supply volume, achieving the goal of increasing the air volume of the air conditioner within a limited size.

[0123] Optionally, in one implementation of this embodiment, such as Figure 9 and 10 As shown, the air supply assembly is the air supply assembly described above, and the center line between the first fan 1 and the second fan 2 coincides with the center line of the heat exchanger 107.

[0124] And / or the distance between the centers of the first fan 1 and the second fan 2 is L1, the length of the heat exchanger 107 is L, and L1 / L is between 0.4 and 0.6.

[0125] This implementation method is beneficial to increase the air intake range of the first fan 1 and the second fan 2, thereby increasing the air supply volume of the first fan 1 and the second fan 2.

[0126] To make it easier to understand, the air supply mode of a cabinet air conditioner is explained:

[0127] The air supply modes include top and bottom air outlet mode 1 - both the first and second fans are turned on, and both the top and bottom air outlets are turned on.

[0128] Top and bottom air outlet mode 2 - Second fan is on, first fan is off, and the air outlet of the auxiliary air duct is closed;

[0129] Single top air outlet mode 1 - Both the first and second fans are on, the lower air outlet is closed, and the upper air outlet is open;

[0130] Single top air outlet mode 2 - First fan is on, second fan is off, the air outlet of the auxiliary air duct is on, the air outlet of the top air outlet duct is off, and the air outlet of the bottom air outlet is off;

[0131] Single bottom air outlet mode - the first fan is off, the second fan is on, the upper air outlet is closed, and the lower air outlet is open.

[0132] The control method provided in this application is applied to the cabinet air conditioner described above, and the method includes:

[0133] The operating mode, set temperature, and indoor temperature of the cabinet air conditioner are obtained periodically.

[0134] The initial air supply mode is determined based on the operating mode and indoor temperature.

[0135] As the difference between the indoor temperature and the set temperature changes, the cabinet air conditioner is controlled to switch air supply modes based on the initial air supply mode.

[0136] The different air supply modes have different air supply volumes.

[0137] When the difference becomes smaller, the system switches to an air supply mode with an air volume smaller than the initial air supply mode, or switches to an air supply mode with a number of fans started less than the number of fans in the initial air supply mode.

[0138] In one embodiment, the operating mode includes cooling and heating, and may also include dehumidification and ventilation, etc., but this embodiment does not specifically limit this. The set temperature refers to the temperature set by the user for the air conditioner. The indoor temperature refers to the temperature of the space where the air conditioner operates.

[0139] In one embodiment, the air supply mode may include the air supply modes described above, specifically including air supply modes such as up-and-down air outlet mode 1, up-and-down air outlet mode 2, single-up air outlet mode 1, single-up air outlet mode 2, and single-down air outlet mode. The air supply volume, from largest to smallest, is: up-and-down air outlet mode 1, single-up air outlet mode 1, up-and-down air outlet mode 2, single-up air outlet mode 2, and single-down air outlet mode. Air supply modes with two fans activated include: up-and-down air outlet mode 1 and single-up air outlet mode 1; air supply modes with one fan activated include: up-and-down air outlet mode 2, single-up air outlet mode 2, and single-down air outlet mode.

[0140] Optionally, in one implementation of this embodiment, controlling the cabinet air conditioner to switch air supply modes based on the initial air supply mode as the difference between the indoor temperature and the set temperature changes includes:

[0141] Determine whether the absolute value of the difference between the periodically acquired indoor temperature and the set temperature does not exceed a preset first temperature difference threshold.

[0142] If so, switch to an air supply mode with an air supply volume less than the initial air supply mode or switch to an air supply mode with a number of fans started less than the number of the initial air supply mode.

[0143] Determine whether the absolute value of the difference between the periodically acquired indoor temperature and the set temperature is not less than a preset second temperature difference threshold.

[0144] If so, switch back to the initial air supply mode.

[0145] For example, if the initial air supply mode is top and bottom air outlet mode 2, it can be switched to single top air outlet mode 2 or single bottom air outlet mode.

[0146] Optionally, in one implementation of this embodiment, determining the initial air supply mode based on the operating mode and the indoor temperature includes:

[0147] When the operating mode is cooling, if the indoor temperature is not less than a preset first temperature threshold, the first air supply mode is used as the initial air supply mode; if the indoor temperature is between the first temperature threshold and a preset second temperature threshold, the second air supply mode is used as the initial air supply mode; if the indoor temperature is not greater than the second temperature threshold, the third air supply mode is used as the initial air supply mode. The air supply volume of the first air supply mode, the second air supply mode and the third air supply mode decreases sequentially, and the air supply volume of the third air supply mode is not the minimum air supply volume among all air supply modes.

[0148] When the operating mode is heating, if the indoor temperature is not greater than a preset third temperature threshold, the first air supply mode is used as the initial air supply mode; if the indoor temperature is between the third temperature threshold and a preset fourth temperature threshold, the third air supply mode is used as the initial air supply mode; if the indoor temperature is not less than the fourth temperature threshold, the fourth air supply mode is used as the initial air supply mode. The air supply volume of the first air supply mode, the second air supply mode, and the fourth air supply mode decreases sequentially, and the air supply volume of the fourth air supply mode is the minimum air supply volume among all air supply modes.

[0149] In one embodiment, the first air supply mode is an up-and-down air supply mode 1, the second air supply mode is a single up air supply mode 1, the third air supply mode is an up-and-down air supply mode 2, and the fourth air supply mode is a single down air supply mode.

[0150] Optionally, in one implementation of this embodiment, if the operating mode is cooling and the initial air supply mode is the first air supply mode or the second air supply mode, then before determining whether the absolute value of the difference between the periodically acquired indoor temperature and the set temperature is not less than a preset second temperature difference threshold, the method further includes:

[0151] The degree to which the indoor temperature deviates from the set temperature is determined by using two consecutive indoor temperature readings and the set temperature.

[0152] If the first degree is not greater than the preset first deviation threshold, then switch to an air supply mode with an air volume less than the current air supply mode or switch to an air supply mode with a number of fans started less than the number of the current air supply mode.

[0153] If the operating mode is heating and the initial air supply mode is the first air supply mode, then before determining whether the absolute value of the difference between the periodically acquired indoor temperature and the set temperature is not less than a preset second temperature difference threshold, the method further includes:

[0154] The second degree of deviation of the indoor temperature from the set temperature is determined by using two consecutive indoor temperature measurements and the set temperature.

[0155] If the second degree is not greater than the preset second deviation threshold, then switch to an air supply mode with an air volume less than the current air supply mode or switch to an air supply mode with a number of fans started less than the number of fans in the current air supply mode.

[0156] In one embodiment, the first-level calculation process includes: |Indoor temperature t2 during cooling - set temperature| / |Indoor temperature t1 during cooling - set temperature|, and the second-level calculation process includes: |Indoor temperature t2 during heating - set temperature| / |Indoor temperature t1 during heating - set temperature|.

[0157] In the above embodiments of this application, the descriptions of each embodiment have their own emphasis. Parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments. The steps illustrated in the related flowcharts can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowcharts, in some cases, the steps shown or described may be performed in a different order than that shown here. In other words, the order of steps described in the foregoing embodiments is merely an example. Reasonable adjustments to the order of steps based on the content of the embodiments of this application are also within the protection scope of the embodiments of this application.

[0158] In one specific implementation of the embodiments of this application, the cabinet air conditioner and its control method include the following processing steps:

[0159] First, let me explain each diagram:

[0160] Figure 1 Air conditioner cross section Figure 1 This exhibit showcases the internal fan structure of the air conditioner and the relative spatial positions of the fan, heat exchanger 107, and air inlet grille. The fan system consists of a single-intake, single-outlet fan and a double-intake, double-outlet fan. The upper fan is a single-intake, single-outlet fan, and its assembly within the air conditioner is such that its axis aligns with the front-to-back direction of the air conditioner, with its air inlet facing the rear air inlet grille of the air conditioner. The lower fan is a double-intake, double-outlet fan, and its assembly within the air conditioner is such that its radial direction aligns with the front-to-back direction of the air conditioner, with its air inlets facing the left and right sides of the air conditioner.

[0161] Figure 2 Air conditioner cross section Figure 2 This demonstrates the assembly of the air conditioner's upper fan within the air conditioner's internal structure and the air intake method.

[0162] Figure 3 Air conditioner cross section Figure 3 This demonstrates the assembly of the lower fan of the air conditioner within the air conditioner's internal structure and the air intake method.

[0163] Figure 4 Air conditioner top and bottom air outlet mode 1: Both the top and bottom fans are turned on simultaneously.

[0164] Figure 5 Air conditioner top and bottom air outlet mode 2: bottom fan on, top fan off.

[0165] Figure 6 In the single-air-outlet mode 1 of the air conditioner, both the upper and lower fans are turned on simultaneously, the air damper at the lower air outlet of the air conditioner is closed, and no air is blown out from the lower air outlet 103 of the lower fan.

[0166] Figure 7 Air conditioner single-airflow mode 2: upper fan on, lower fan off.

[0167] Figure 8 When the air conditioner is in single-outlet mode, the lower fan is on, the upper fan is off, the air guide plate at the top of the air conditioner is closed, and no air is coming out from the upper air outlet 101 of the lower fan.

[0168] Figure 9 The relative positions of the fans and heat exchanger 107 are such that the centerlines of the upper and lower fans coincide with the centerline of the heat exchanger 107, and the ratio of the distance L1 between the two fans to the distance between the heat exchanger 107 is: L1 / L = 0.4-0.6.

[0169] Figure 10 : The air intake range of the upper and lower fans, combined with Figure 9 The relative positions of the fan and the heat exchanger 107 are designed to ensure that when a single fan is turned on, the air intake range of the fan covers at least 2 / 3 of the area of ​​the heat exchanger 107, thus ensuring uniform heat exchange.

[0170] In this specific application, the upper fan is the first fan 1, and the lower fan is the second fan 2.

[0171] The air supply system consists of a single-intake, single-outlet fan and a double-intake, double-outlet fan. The upper fan is a single-intake, single-outlet fan, and its assembly inside the air conditioner is such that the fan's axis is aligned with the front-to-back direction of the air conditioner. The fan's air inlet faces the rear air intake grille of the air conditioner, and its air outlet faces the top of the air conditioner. The lower fan is a double-intake, double-outlet fan, and its assembly inside the air conditioner is such that the fan's radial direction is aligned with the front-to-back direction of the air conditioner. The fan's air inlets face the left and right sides of the air conditioner, and its air outlets face the top and bottom of the air conditioner, respectively.

[0172] This fan layout makes full use of the internal space of the air conditioner, allowing for a sufficiently large fan blade diameter, thus enabling the air conditioner to output a larger air volume. This fan layout allows the air conditioner casing to have a minimum front-to-back size of 390mm (previously 430mm) and a left-to-right size of 365mm (previously 400mm).

[0173] The air conditioner of the present invention has the following air supply mode:

[0174] 1. Air conditioner with top and bottom air outlet mode 1: both top and bottom fans are turned on simultaneously.

[0175] 2. Air conditioner with top and bottom air outlet mode 2: bottom fan on, top fan off.

[0176] 3. In the air conditioner's single top air outlet mode 1, both the top and bottom fans are turned on simultaneously, the air damper at the bottom air outlet of the air conditioner is closed, and no air is blown out from the bottom air outlet 103 of the bottom fan.

[0177] 4. Air conditioner with single top air outlet mode 2: top fan on, bottom fan off.

[0178] 5. In the single-outlet mode of the air conditioner, the lower fan is on, the upper fan is off, the air guide plate of the air outlet on the top of the air conditioner is closed, and no air is blown from the upper air outlet 101 of the lower fan.

[0179] The control methods for cooling and heating are explained below. Both the cooling inner loop and heating inner loop refer to the real-time measured indoor ambient temperature, which can be detected by the temperature sensing device on the air conditioner. The preset inner loop is written into the air conditioner program to determine whether the indoor ambient temperature at startup is too high or too low, and to predict the user's cooling needs. The user-set temperature is the temperature set by the user according to their own needs. δTv1 is a value characterizing the degree of temperature change, preset in the air conditioner program. When |Tcooling inner loop 3 - Tuser-set temperature| / |Tcooling inner loop 2 - Tuser-set temperature|≤δTv1, it indicates that the rate of change of indoor ambient temperature is slow. Cooling inner loops 1, 2, 3, and 4 are temperatures obtained at the same location at different times and are independent of each other; heating inner loops 1, 2, 3, and 4 are temperatures obtained at the same location at different times and are independent of each other. Preset inner loops 1 and 2 are used in cooling mode, and preset inner loops 3 and 4 are used in heating mode. The preset temperature is not fixed; it's programmed into the air conditioner to determine whether the indoor ambient temperature is too high or too low at startup, and to anticipate the user's cooling needs. Therefore, it's a range, not a fixed value. Δt1 and Δt2 are used in cooling mode, while Δt3 and Δt4 are used in heating mode; these are independent values. δTv1 and δTv2 characterize temperature changes. δTv1 indicates the degree to which the indoor ambient temperature deviates from the user's set temperature as the air conditioner continues to operate after the ambient temperature has approached it in cooling mode.

[0180] δTv2 indicates the degree to which the indoor ambient temperature deviates from the user's set temperature while the air conditioner continues to operate in heating mode, after the indoor ambient temperature has approached the user's set temperature.

[0181] The values ​​of δTv1 and δTv2 can be 2.

[0182] For example: In cooling mode, when the user-set temperature T is 20℃, the inner ring temperature T2 is 22℃, and the inner ring temperature T3 is 24℃, |24-20| / |22-20|=2. When the inner ring temperature T3 is 26℃, |26-20| / |22-20|=3. The value of δTv1≤2 indicates that the indoor ambient temperature is close to the user-set temperature. After changing the air outlet mode, the indoor ambient temperature rises less and deviates less from the user-set temperature.

[0183] The specific control method for cooling mode is as follows:

[0184] like Figure 11As shown, the cooling mode relies on detecting the indoor ambient temperature and comparing the changes in the indoor ambient temperature with the user's set temperature to adjust different air outlet modes, which can meet both the user's need for indoor temperature reduction and the need for energy saving in air conditioning operation.

[0185] 1. When Tcooling inner ring 1 ≥ Tpreset inner ring 1, it indicates that the indoor ambient temperature is high and the user has a greater need for temperature reduction. The air conditioner activates the upper and lower air outlet mode 1, with both upper and lower air outlets 103 simultaneously delivering a large volume of cold air to prioritize lowering the indoor ambient temperature. When |Tcooling inner ring 2 - Tuser set temperature| ≤ Δt1, it indicates that the indoor ambient temperature is close to the user set temperature. The air conditioner switches to the single upper air outlet mode 1, and the lower air outlet 103 is closed, reducing the output of cooling capacity and correspondingly reducing the operating energy consumption of the air conditioner. When |Tcooling inner ring 1| ≤ Δt1, it indicates that the indoor ambient temperature is close to the user set temperature. The air conditioner switches to the single upper air outlet mode 1, and the lower air outlet 103 is closed to reduce the output of cooling capacity and correspondingly reduce the operating energy consumption of the air conditioner. When |T_user-set temperature| / |T_cooling inner loop 2_user-set temperature| ≤ δTv1, it indicates that after the indoor temperature approaches the user-set temperature, the rate of change of the indoor ambient temperature is slow. The air conditioner switches to single top air outlet mode 2, shuts off the bottom fan, and only the top fan runs, further reducing the output of cooling capacity and correspondingly reducing the operating energy consumption of the air conditioner. When |T_cooling inner loop 4_user-set temperature| > Δt2, it indicates that the indoor ambient temperature has deviated significantly from the user-set temperature. The air conditioner switches back to top and bottom air outlet mode 1 to prioritize lowering the indoor ambient temperature.

[0186] 2. When Tpreset inner loop 2 < Tcooling inner loop 1 < Tpreset inner loop 1, it indicates that the indoor ambient temperature is not high, and the user's demand for indoor temperature reduction is not significant. The air conditioner can meet the indoor temperature reduction requirement by operating in single top-discharge mode 1. When |Tcooling inner loop 2 - Tuser set temperature| ≤ Δt1, it indicates that the indoor ambient temperature is close to the user set temperature. The air conditioner switches to top-bottom airflow mode 2, with the top fan off and the bottom fan on, reducing the output of cooling capacity and correspondingly reducing the air conditioner's operating energy consumption. When |Tcooling inner loop 3 - Tuser set temperature| / |Tcooling inner loop 2 - Tuser set temperature| ≤ Δt1, it indicates that the indoor ambient temperature is close to the user set temperature. The air conditioner switches to top-bottom airflow mode 2, with the top fan off and the bottom fan on, reducing the output of cooling capacity and correspondingly reducing the air conditioner's operating energy consumption. If the user's set temperature |≤δTv1, it means that the indoor temperature changes slowly after approaching the user's set temperature. The air conditioner switches to single top air outlet mode 2, turning off the lower fan and only running the upper fan. The purpose is to take advantage of the high density of cold air, sending the cooling air out from the upper air outlet. The cold air is delivered to the top of the room, and the cold air naturally sinks, which is more conducive to maintaining the indoor temperature. When |T_cooling inner ring 4-T_user set temperature|>△t2, it means that the indoor temperature has deviated significantly from the user's set temperature. The air conditioner switches back to single top air outlet mode 1 to prioritize lowering the indoor temperature.

[0187] 3. When Tcooling inner ring 1 ≤ Tpreset inner ring 2, it indicates that the indoor ambient temperature is low and the user's demand for indoor temperature reduction is low. The air conditioner will switch to the up-and-down air outlet mode 2, and only the down fan needs to be turned on to meet the indoor temperature reduction requirement. When |Tcooling inner ring 2 - Tuser set temperature| ≤ △t1, it indicates that the indoor ambient temperature is close to the user set temperature. The air conditioner will switch to the single up-and-down air outlet mode 2. When |Tcooling inner ring 4 - Tuser set temperature| > △t2, it indicates that the indoor ambient temperature has deviated significantly from the user set temperature. The air conditioner will switch back to the up-and-down air outlet mode 2 to prioritize reducing the indoor ambient temperature.

[0188] The specific control method for the heating mode is as follows:

[0189] like Figure 12 As shown, the heating mode relies on detecting the indoor ambient temperature and comparing the changes in the indoor ambient temperature with the user's set temperature to adjust different air outlet modes, which can meet both the user's demand for indoor temperature rise and the air conditioner's energy-saving operation requirements.

[0190] 1. When Theating inner ring 1 ≤ Tpreset inner ring 3, it indicates that the indoor ambient temperature is low and the user has a high demand for indoor temperature rise. The air conditioner turns on the up-and-down air outlet mode 1, and the up and down air outlets 103 simultaneously deliver a large volume of hot air to prioritize raising the indoor ambient temperature. When |Theating inner ring 2 - Tuser set temperature| ≤ Δt3, it indicates that the indoor ambient temperature is close to the user set temperature. The air conditioner switches to the up-and-down air outlet mode 2, the upper fan is turned off, reducing heat output and correspondingly reducing the air conditioner's operating energy consumption. When |Theating inner ring 3 - Tuser set temperature| / | When |T_heating_inner_loop2-T_user_set_temperature|≤δTv2, it indicates that after the indoor temperature approaches the user's set temperature, the rate of change in the indoor ambient temperature is slow. The air conditioner switches to a single-downward air outlet mode to take advantage of the low density of hot air. The hot air is delivered from the lower air outlet, and the hot air is delivered to the bottom of the room. The hot air flow naturally rises, which is more conducive to maintaining the indoor ambient temperature. When |T_heating_inner_loop4-T_user_set_temperature|>△t4, it indicates that the indoor ambient temperature has deviated significantly from the user's set temperature. The air conditioner switches back to the top-and-bottom air outlet mode 1 to prioritize raising the indoor ambient temperature.

[0191] 2. When Tpreset inner ring 3 < Theating inner ring 1 < Tpreset inner ring 4, it indicates that the indoor ambient temperature is not low and the user's demand for indoor temperature rise is not high. The air conditioner can meet the indoor temperature rise requirement by turning on the up-and-down air outlet mode 2. When |Theating inner ring 2 - Tuser set temperature| ≤ Δt3, it indicates that the indoor ambient temperature is close to the user set temperature. The air conditioner switches to the single down-outlet mode. The purpose is to take advantage of the low density of hot air and send the heating air out from the lower air outlet. The hot air is delivered to the bottom of the room and the hot air rises naturally, which is more conducive to maintaining the indoor ambient temperature. The corresponding upper fan is turned off, reducing the energy consumption of the upper fan, which also reduces the operating energy consumption of the air conditioner. When |Theating inner ring 3 - Tuser set temperature| > Δt4, it indicates that the indoor ambient temperature has deviated significantly from the user set temperature. The air conditioner switches back to the up-and-down air outlet mode 2 to prioritize raising the indoor ambient temperature.

[0192] 3. When T_heating inner ring 1 ≥ T_preset inner ring 4, it indicates that the indoor ambient temperature is high and the user's demand for indoor temperature rise is low. The air conditioner can meet the indoor temperature rise demand by turning on the single-down air outlet mode. When |T_heating inner ring 2 - T_user set temperature| ≤ △t3, it indicates that the indoor ambient temperature is close to the user set temperature. The air conditioner continues to use the single-down air outlet mode, and the fan speed is reduced by n revolutions to reduce heat output and fan energy consumption, which also reduces the operating energy consumption of the air conditioner. When |T_heating inner ring 3 - T_user set temperature| > △t4, it indicates that the indoor ambient temperature has deviated significantly from the user set temperature. The air conditioner switches back to the original single-down air outlet mode at the beginning of the start-up to prioritize raising the indoor ambient temperature.

[0193] The sequence numbers or order of description of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0194] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0195] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0196] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0197] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer, or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., digital versatile disc (DVD)), or a semiconductor medium (e.g., solid state disk (SSD)). It is worth noting that the computer-readable storage medium mentioned in the embodiments of this application can be a non-volatile storage medium; in other words, it can be a non-transient storage medium.

[0198] It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data used for analysis, stored data, displayed data, etc.), and signals involved in the embodiments of this application are all authorized by the user or fully authorized by all parties, and the collection, use, and processing of related data must comply with the relevant laws, regulations, and standards of the relevant countries and regions. For example, the scene data of the current frame in the 3D virtual scene involved in the embodiments of this application, the client's device information, and the scene interaction information are all obtained with full authorization.

[0199] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. An air supply assembly, characterized in that, A cabinet-type air conditioner with top and bottom air outlets, wherein the cabinet-type air conditioner is provided with a top air outlet, a bottom air outlet, and a rear air inlet, and the air supply assembly includes: The first fan is a single-intake, single-outlet centrifugal fan, which has a first air inlet and a first air outlet. The axial direction of the first fan is the front-to-back direction of the cabinet air conditioner. The second fan is a double-intake, double-outlet centrifugal fan, which has a second air inlet, a third air inlet, a second air outlet, and a third air outlet. The second air inlet and the third air inlet are connected to the rear air inlet, the second air outlet is connected to the upper air outlet, and the third air outlet is connected to the lower air outlet. The axial direction of the second fan is the left-right direction of the cabinet air conditioner. The main air duct connects the upper air outlet and the lower air outlet; the second fan is located on the main air duct, and the main air duct includes: The upper air outlet duct connects the second air outlet of the second fan to the upper air outlet. The lower air outlet duct connects the third air outlet of the second fan to the lower air outlet; The air supply assembly also includes an auxiliary air duct located on one side of the main air duct, connecting the rear air inlet and the upper air outlet; the first fan is disposed on the auxiliary air duct, wherein the first air inlet of the first fan is correspondingly connected to the rear air inlet, and the first air outlet is correspondingly connected to the upper air outlet. The main air duct control component can control the main air duct to achieve simultaneous airflow from the upper and lower air ducts, airflow from only the upper air duct, airflow from only the lower air duct, or no airflow from either the upper or lower air ducts. The auxiliary air duct control component can control the auxiliary air duct to achieve upward airflow or no airflow. The air supply assembly is equipped with multiple air supply modes based on the air control functions of the main air duct control assembly and the auxiliary air duct control assembly.

2. The air supply assembly according to claim 1, characterized in that, The first air inlet faces the rear air inlet; Both the second and third air inlets are located in the axial direction of the second fan; The axes of the first fan and the second fan are perpendicular to each other.

3. The air supply assembly according to claim 1, characterized in that, The diameter of the second fan is greater than or equal to the sum of the radial length of the first fan and the width of the upper air outlet duct.

4. The air supply assembly according to claim 1, characterized in that, The width of the lower air outlet duct is greater than the width of the upper air outlet duct.

5. The air supply assembly according to claim 1, characterized in that, The auxiliary air duct is located between the upper air outlet duct and the rear air inlet.

6. The air supply assembly according to any one of claims 1-5, characterized in that, The first fan is located above the second fan and on the upper half of the air supply assembly.

7. A cabinet-type air conditioner, characterized in that, Including the casing and heat exchanger; The rear side of the housing is provided with a rear air inlet, the upper side of the housing is provided with a selectively openable and closable upper air outlet, and the lower side of the housing is provided with a selectively openable and closable lower air outlet. The heat exchanger is located inside the outer casing and near the rear air inlet. The heat exchanger has an air supply assembly as described in any one of claims 1-6 inside its outer casing on the side away from the rear air inlet.

8. The cabinet air conditioner according to claim 7, characterized in that, The centerline between the first fan and the second fan coincides with the centerline of the heat exchanger. And / or the distance between the centers of the first fan and the second fan is L1, the length of the heat exchanger is L, and L1 / L is between 0.4 and 0.

6.

9. A control method for a cabinet air conditioner as described in claim 7 or 8, characterized in that, The method includes: The operating mode, set temperature, and indoor temperature of the cabinet air conditioner are obtained periodically. The initial air supply mode is determined based on the operating mode and indoor temperature. As the difference between the indoor temperature and the set temperature changes, the cabinet air conditioner is controlled to switch air supply modes based on the initial air supply mode. The different air supply modes have different air supply volumes. When the difference becomes smaller, the system switches to an air supply mode with an air volume smaller than the initial air supply mode, or switches to an air supply mode with a number of fans started less than the number of fans in the initial air supply mode.

10. The control method according to claim 9, characterized in that, The method of controlling the cabinet air conditioner to switch air supply modes based on the initial air supply mode as the difference between the indoor temperature and the set temperature changes includes: Determine whether the absolute value of the difference between the periodically acquired indoor temperature and the set temperature does not exceed a preset first temperature difference threshold. If so, switch to an air supply mode with an air supply volume less than the initial air supply mode or switch to an air supply mode with a number of fans started less than the number of the initial air supply mode. Determine whether the absolute value of the difference between the periodically acquired indoor temperature and the set temperature is not less than a preset second temperature difference threshold. If so, switch back to the initial air supply mode.

11. The control method according to claim 10, characterized in that, The step of determining the initial air supply mode based on the operating mode and indoor temperature includes: When the operating mode is cooling, if the indoor temperature is not less than a preset first temperature threshold, the first air supply mode is used as the initial air supply mode; if the indoor temperature is between the first temperature threshold and a preset second temperature threshold, the second air supply mode is used as the initial air supply mode; if the indoor temperature is not greater than the second temperature threshold, the third air supply mode is used as the initial air supply mode. The air supply volume of the first air supply mode, the second air supply mode and the third air supply mode decreases sequentially, and the air supply volume of the third air supply mode is not the minimum air supply volume among all air supply modes. When the operating mode is heating, if the indoor temperature is not greater than a preset third temperature threshold, the first air supply mode is used as the initial air supply mode; if the indoor temperature is between the third temperature threshold and a preset fourth temperature threshold, the third air supply mode is used as the initial air supply mode; if the indoor temperature is not less than the fourth temperature threshold, the fourth air supply mode is used as the initial air supply mode. The air supply volume of the first air supply mode, the second air supply mode, and the fourth air supply mode decreases sequentially, and the air supply volume of the fourth air supply mode is the minimum air supply volume among all air supply modes.

12. The control method according to claim 11, characterized in that, If the operating mode is cooling and the initial air supply mode is the first air supply mode or the second air supply mode, then before determining whether the absolute value of the difference between the periodically acquired indoor temperature and the set temperature is not less than a preset second temperature difference threshold, the method further includes: The degree to which the indoor temperature deviates from the set temperature is determined by using two consecutive indoor temperature readings and the set temperature. If the first degree is not greater than the preset first deviation threshold, then switch to an air supply mode with an air volume less than the current air supply mode or switch to an air supply mode with a number of fans started less than the number of the current air supply mode. If the operating mode is heating and the initial air supply mode is the first air supply mode, then before determining whether the absolute value of the difference between the periodically acquired indoor temperature and the set temperature is not less than a preset second temperature difference threshold, the method further includes: The second degree of deviation of the indoor temperature from the set temperature is determined by using two consecutive indoor temperature measurements and the set temperature. If the second degree is not greater than the preset second deviation threshold, then switch to an air supply mode with an air volume less than the current air supply mode or switch to an air supply mode with a number of fans started less than the number of fans in the current air supply mode.

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