Air supply assembly, cabinet type air conditioner and control method

Abstract

The embodiment of the invention discloses an air supply assembly, a cabinet type air conditioner and a control method, and belongs to the field of air conditioners. Wherein the air supply assembly comprises a first fan, and the first fan is a single-suction single-outlet centrifugal fan and is provided with a first air inlet and a first air outlet; the second fan is a double-suction double-outlet centrifugal fan and is provided with a second air inlet, a third air inlet, a second air outlet and a third air outlet; the second fan is located on the main air duct, and the first fan is located on the auxiliary air duct. According to the cabinet type air conditioner provided with the air supply assembly, the first fan belongs to the single-suction single-outlet centrifugal fan, so that the size of the first fan is small, normal air outlet of the upper air outlet duct or the lower air outlet duct is not easily affected, the first fan and the second fan can be arranged in the cabinet type air conditioner provided with the air supply assembly at the same time, and the size of the cabinet type air conditioner does not need to be increased; the first fan and the second fan can provide larger air supply volume, and the technical effect of increasing the air volume of the air conditioner under the limited size is achieved.

Description

Technical Field

[0001] The present application relates to the field of air conditioning, and in particular, to an air supply component, a cabinet air conditioner and a control method. Background Art

[0002] Air conditioners can improve indoor temperature and increase user comfort. The rate at which air conditioners improve indoor temperature is related to the air volume of the air conditioner. If the air volume is small, it will take a long time to adjust the indoor temperature to the degree set by the user, resulting in a reduced user experience.

[0003] In order to solve the above problems, the existing air conditioner increases the air volume of the air conditioner by increasing the number of fans or increasing the size of the fans. However, this method causes the size of the air conditioner to become larger, which is not easy to occupy space and increases the cost of the air conditioner. Summary of the invention

[0004] The embodiments of the present application provide 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 the air conditioner under limited size.

[0005] According to a first aspect of an embodiment of the present application, an air supply assembly is provided, which is applied to a cabinet air conditioner with upper and lower air outlets, wherein the cabinet air conditioner is provided with an upper air outlet, a lower air outlet and a rear air inlet, and the air supply assembly comprises:

[0006] A first fan, wherein the first fan is a single-suction single-outlet centrifugal fan, which is provided with a first air inlet and a first air outlet, and the axial direction of the first fan is the front-to-back direction of the cabinet air conditioner;

[0007] a second fan, the second fan is a double-suction double-outlet centrifugal fan, which is provided with a second air inlet, a third air inlet, a second air outlet and a third air outlet, wherein the second air inlet and the third air inlet are both connected to the rear air inlet, the second air outlet is connected to the upper air outlet, the third air outlet is connected to the lower air outlet, and the axial direction of the second fan is the left-right direction of the cabinet air conditioner;

[0008] A main air duct is connected between 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] An upper air outlet duct connecting the second air outlet of the second fan and the upper air outlet;

[0010] A lower air outlet duct connecting the third air outlet of the second fan and the lower air outlet;

[0011] The air supply assembly further includes an auxiliary air duct, which is located on one side of the main air duct and connects the rear air inlet with the upper air outlet; the first fan is arranged 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 wind control component can control the main air duct to achieve simultaneous air discharge from the upper and lower air ducts, or only the upper air outlet air duct, or only the lower air outlet air duct, or no air discharge from the upper and lower air ducts;

[0013] Auxiliary air duct wind control component can control the auxiliary air duct to achieve upward air outlet or no air outlet;

[0014] The air supply component is provided with a plurality of air supply modes according to the air control functions of the main air duct air control component and the auxiliary air duct air control component.

[0015] With this embodiment, the first fan in the air supply assembly is a single-suction single-outlet centrifugal fan, so the first fan is relatively small in size and is not likely to affect the normal air outlet of the upper air outlet duct or the lower air outlet duct, so that the first fan and the second fan can be simultaneously installed in the cabinet air conditioner with the air supply assembly, and the volume of the cabinet air conditioner does not need to be increased. The first fan and the second fan can provide a larger air supply volume, thereby achieving the purpose of increasing the air volume of the air conditioner within a limited size.

[0016] In combination with the first aspect, in an optional implementation of the embodiment of the present application, the first air inlet faces the rear air inlet;

[0017] The second air inlet and the third air inlet are both located in the axial direction of the second fan;

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

[0019] With this implementation, the first air inlet faces the rear air inlet, so that the first fan is vertically arranged in the cabinet air conditioner. This helps reduce the occupation of the horizontal space of the cabinet air conditioner by the first fan, thereby controlling the horizontal width of the cabinet air conditioner equipped with an air supply component.

[0020] In combination with the first aspect, in an optional implementation of the embodiment of the present application, the diameter length 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] The 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 to increase the air supply volume.

[0022] In combination with the first aspect, in an optional implementation of the embodiment of the present application, the width of the lower air outlet duct is greater than the width of the upper air outlet duct.

[0023] With this implementation, the width of the upper air outlet duct is smaller than that of the lower air outlet duct, so that when the second fan supplies air to the upper air outlet duct, the wind speed is increased, thereby improving the heat exchange efficiency of the air supply component when discharging air.

[0024] In combination with the first aspect, in an optional implementation of the embodiment of the present application, the auxiliary air duct is located between the upper air outlet duct and the rear air inlet.

[0025] In combination with the first aspect, in an optional implementation of the embodiment of the present 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] With this implementation, the first fan is located on the upper half of the air supply assembly, so that the first fan can efficiently supply air to the upper end of the air supply assembly, thereby improving the heat exchange efficiency when the air is discharged from the air supply assembly.

[0027] According to a second aspect of an embodiment of the present application, there is provided a cabinet air conditioner, comprising a housing and a heat exchanger;

[0028] The rear side of the shell is provided with a rear air inlet, the upper side of the shell is provided with an upper air outlet that can be selectively opened and closed, and the lower side of the shell is provided with a lower air outlet that can be selectively opened and closed;

[0029] The heat exchanger is arranged inside the housing and close to the rear air inlet;

[0030] The air supply assembly described above is arranged in the shell of the heat exchanger on the side away from the rear air inlet.

[0031] With the present implementation, an air supply component is provided in the cabinet air conditioner, and the first fan in the air supply component is a single-suction single-outlet centrifugal fan. Therefore, the first fan is relatively small in size and is not likely to affect the normal air outlet of the upper air outlet duct or the lower air outlet duct. The first fan and the second fan can be simultaneously arranged in the cabinet air conditioner with the air supply component, and the volume of the cabinet air conditioner does not need to be increased. The first fan and the second fan can provide a larger air supply volume, thereby achieving the purpose of increasing the air volume of the air conditioner within a limited size.

[0032] In combination with the second aspect, in an optional implementation of the embodiment of the present application, the air supply component is the air supply component described above, and a center line between the first fan and the second fan coincides with a center line 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 0.4-0.6.

[0034] The implementation method is adopted to help increase the air intake range of the first fan and the second fan, thereby increasing the air supply volume of the first fan and the second fan.

[0035] According to a third aspect of an embodiment of the present application, a control method for the above-mentioned cabinet air conditioner is provided, the method comprising:

[0036] Obtaining the operating mode and set temperature of the cabinet air conditioner and periodically obtaining the indoor temperature;

[0037] determining an initial air supply mode according to the operation mode and the indoor temperature;

[0038] As the difference between the indoor temperature and the set temperature changes, controlling the cabinet air conditioner to switch the air supply mode based on the initial air supply mode;

[0039] Wherein, different air supply modes have different air supply volumes.

[0040] When the difference becomes smaller, the air supply mode is switched to an air supply mode with an air supply volume less than that of the initial air supply mode, or the air supply mode is switched to an air supply mode with a fan start-up number less than that of the initial air supply mode.

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

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

[0043] If so, switching to an air supply mode with an air supply volume less than the initial air supply mode or switching to an air supply mode with a fan start-up number less than the number of the initial air supply mode;

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

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

[0046] In conjunction with the third aspect, in an optional implementation of the embodiment of the present application, determining the initial air supply mode according to the operating mode and the indoor temperature includes:

[0047] When the operation 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, wherein the air supply volumes of the first air supply mode, the second air supply mode and the third air supply mode decrease in sequence 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 operation 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, wherein the air supply volumes of the first air supply mode, the second air supply mode and the fourth air supply mode decrease successively and the air supply volume of the fourth air supply mode is the minimum air supply volume among all air supply modes.

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

[0050] Determine a first degree to which the indoor temperature deviates from the set temperature by using the indoor temperatures obtained twice adjacently and the set temperature;

[0051] If the first degree is not greater than a preset first deviation threshold, switching to an air supply mode with an air supply volume less than the current air supply mode or switching to an air supply mode with a fan start-up number less than the number of the current air supply mode;

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

[0053] Determine a second degree to which the indoor temperature deviates from the set temperature by using the indoor temperatures obtained twice adjacently and the set temperature;

[0054] If the second degree is not greater than a preset second deviation threshold, switch to an air supply mode with an air supply volume less than the current air supply mode or switch to an air supply mode with a fan start-up number less than the number of the current air supply mode.

[0055] The technical effect obtained by the third aspect mentioned above is similar to the technical effect obtained by the corresponding technical means in the first and second aspects, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 is a schematic diagram of a cabinet air conditioner provided in an embodiment of the present application;

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

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

[0059] Figure 4 It is the airflow direction in the up and down air outlet mode 1 provided in the embodiment of the present application;

[0060] Figure 5 It is the airflow direction in the up and down air outlet mode 2 provided in the embodiment of the present application;

[0061] Figure 6 It is the airflow direction in single upper air outlet mode 1 provided in the embodiment of the present application;

[0062] Figure 7 It is the airflow direction in single upper air outlet mode 2 provided in the embodiment of the present application;

[0063] Figure 8 It is the airflow direction in the single down-outlet mode provided in the embodiment of the present application;

[0064] Fig. 9 is a schematic diagram of the positional relationship between the first fan, the second fan and the heat exchanger provided in an embodiment of the present application;

[0065] Fig.10 is a schematic diagram of the air inlet range of the first fan and the second fan provided in an embodiment of the present application;

[0066] Fig.11 is a refrigeration flow chart of the control method provided in the embodiment of the present application in a specific application;

[0067] Fig.12 It is a heating flow chart of the control method provided in the embodiment of the present application in a specific application.

[0068] Explanation of reference numerals: 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. casing; 107. heat exchanger; 109. rear air inlet. DETAILED DESCRIPTION

[0070] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0071] It should be understood that the "plurality" mentioned in this article refers to two or more. In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second" and so on are used to distinguish between the same items or similar items with basically the same functions and effects. Those skilled in the art can understand that the words "first", "second" and so on do not limit the quantity and execution order, and the words "first", "second" and so on do not limit certain different

[0072] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, product, or apparatus.

[0073] The existing air conditioners with upper and lower air outlets generally have low air volume, which brings certain difficulties to improving the energy efficiency of air conditioners. In order to increase the air volume, it is usually necessary to increase the size of the fan, which will also make the size of the air conditioner larger, affect the appearance, and increase the cost.

[0074] Based on this, the embodiments of the present 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 the present application can increase the total air volume of the existing upper and lower air conditioners;

[0076] 2. The air conditioner of the present application can improve the single upper air flow of the existing upper and lower air conditioner;

[0077] 3. The air conditioner fan combination method of the present application can reduce the size of the air conditioner housing;

[0078] 4. The air conditioner of the present application has a variety of air supply modes (upper and lower air outlet, upper air outlet only, lower air outlet only) and can select different air outlet modes according to the room load.

[0079] Solve at least one of the following problems:

[0080] 1. It solves the problem of small air volume of the existing up-and-down air conditioner, and also solves the problem of large shell size and high cost of the existing up-and-down air conditioner;

[0081] 2. It solves the problem that the existing upper and lower air-discharging air conditioner cannot simultaneously meet the air supply modes of upper and lower air-discharging, upper air-discharging only, and lower air-discharging only.

[0082] Specifically, the above-mentioned characteristics and problems 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. The two fans are combined to supply air.

[0084] Technical problems solved by feature 1 include: effectively utilizing the front, back, left, and right spaces inside the air conditioner, and being able to make the fan size large enough within a limited space.

[0085] The technical effects of feature 1 include: being able to increase the total air volume of the upper and lower air-discharging air conditioner.

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

[0087] The technical problems solved by feature 2 include: when only the upper air is discharged, the lower fan can supplement the air supply.

[0088] The technical effects of feature 2 include: being able to increase the single upper airflow volume of the upper and lower air-discharging air conditioner.

[0089] It should be noted that:

[0090] Single-suction single-outlet fan: refers to a centrifugal fan with only one side for air intake and one air outlet;

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

[0092] Next, the air supply assembly provided in this application is further described, referring to Figure 1-10 As shown, the air supply component is applied to a cabinet air conditioner with upper and lower 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 component includes:

[0093] A first fan 1, which is a single-suction single-outlet centrifugal fan, and is provided with a first air inlet 11 and a first air outlet 12, and 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-suction 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, wherein the second air inlet 21 and the third air inlet 22 are both 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, and the axial direction of the second fan 2 is the left-right direction of the cabinet air conditioner;

[0095] The main air duct 3 is connected between 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 is connected to the second air outlet 23 of the second fan 2 and the upper air outlet 101;

[0097] A lower air outlet duct 32 is connected to the third air outlet 24 of the second fan 2 and the lower air outlet 103;

[0098] The air supply assembly further includes an auxiliary air duct 4, which is located on one side of the main air duct 3 and connects the rear air inlet 109 with the upper air outlet 101; the first fan 1 is arranged 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 wind control component can control the main air duct 3 to achieve simultaneous air discharge from the upper and lower air ducts, or only the upper air outlet duct 31 to discharge air, or only the lower air outlet duct 32 to discharge air, or neither the upper nor the lower air ducts to discharge air;

[0100] Auxiliary air duct 4 wind control component can control the auxiliary air duct 4 to achieve upward air outlet or no air outlet;

[0101] The air supply component is provided with a plurality of air supply modes according to the air control functions of the main air duct 3 air control component and the auxiliary air duct 4 air control component.

[0102] In one embodiment, the first fan 1 has only one air inlet, i.e., the first air inlet 11, and only one air outlet, i.e., the first air outlet 12. The first air outlet 12 can be arranged on a side opposite to the first air inlet 11, or can be opened on other sides of the first fan 1, which is not specifically limited in this embodiment.

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

[0104] With this embodiment, the first fan 1 in the air supply assembly is a single-suction single-outlet centrifugal fan, so the first fan 1 is relatively small in size and is not likely to affect the normal air outlet of the upper air outlet duct 31 or the lower air outlet duct 32, so that the first fan 1 and the second fan 2 can be simultaneously arranged in the cabinet air conditioner provided with the air supply assembly, and the volume of the cabinet air conditioner does not need to be increased. The first fan 1 and the second fan 2 can provide a larger air supply volume, thereby achieving the purpose of increasing the air volume of the air conditioner within a limited size.

[0105] In a possible embodiment of the present 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 in the cabinet air conditioner, a rear air inlet 109 is provided on the rear side of the cabinet air conditioner, and 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 and rear direction of the air conditioner, and the axial direction of the second fan 2 is the left and right direction of the air conditioner.

[0109] With this embodiment, the first air inlet 11 faces the rear air inlet 109, so that the first fan 1 is arranged in a vertical state in the cabinet air conditioner. This helps to reduce the occupation of the horizontal space of the cabinet air conditioner by the first fan 1, thereby controlling the horizontal width of the cabinet air conditioner equipped with the air supply component.

[0110] Optionally, in an implementation of this embodiment, the diameter length 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] The implementation method is adopted to help 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 to increase the air supply volume.

[0112] Optionally, in an 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] With this implementation, the width of the upper air outlet duct 31 is smaller than that of the lower air outlet duct 32, so that when the second fan 2 supplies air to the upper air outlet duct 31, the wind speed is increased, thereby improving the heat exchange efficiency of the air supply component when discharging air.

[0114] Optionally, in an 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 an 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, and the air supply assembly can be divided into an upper half and a lower half from the middle height of the air supply assembly. Specifically, the part above the middle height is the upper half of the air supply assembly, and the part below the middle height is the lower half of the air supply assembly.

[0117] With this implementation, the first fan 1 is located on the upper half of the air supply assembly, so that the first fan 1 can efficiently supply air to the upper end of the air supply assembly, thereby improving the heat exchange efficiency when the air is discharged from the air supply assembly.

[0118] The cabinet air conditioner provided in the embodiment of the present application 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 an upper air outlet 101 that can be selectively opened and closed, and the lower side of the housing 105 is provided with a lower air outlet 103 that can be selectively opened and closed;

[0120] The heat exchanger 107 is disposed inside the housing 105 and close to the rear air inlet 109;

[0121] The above-mentioned air supply component is disposed in the housing 105 of the heat exchanger 107 at a side away from the rear air inlet 109 .

[0122] With the present implementation, the first fan 1 in the air supply assembly is a single-suction single-outlet centrifugal fan, and therefore the first fan 1 is relatively small in size and is not likely to affect the normal air outlet of the upper air outlet duct 31 or the lower air outlet duct 32, so that the first fan 1 and the second fan 2 can be simultaneously arranged in a cabinet air conditioner provided with an air supply assembly, and the volume of the cabinet air conditioner does not need to be increased, and the first fan 1 and the second fan 2 can provide a larger air supply volume, thereby achieving the purpose of increasing the air volume of the air conditioner within a limited size.

[0123] Optionally, in an implementation of this embodiment, as Fig. 9 and 10 As shown, the air supply component is the air supply component 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 center of the first fan 1 and the center of the second fan 2 is L1, the length of the heat exchanger 107 is L, and L1 / L is between 0.4-0.6.

[0125] The implementation method is adopted to help 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] For ease of understanding, the air supply mode of the cabinet air conditioner is explained as follows:

[0127] The air supply mode includes upper and lower air outlet mode 1: the first fan and the second fan are both turned on, and the upper air outlet and the lower air outlet are both turned on;

[0128] Up and down air outlet mode 2: the second fan is turned on, the first fan is turned off, and the air outlet end of the auxiliary air duct is closed;

[0129] Single upper air outlet mode 1: both the first and second fans are turned on, the lower air outlet is closed, and the upper air outlet is turned on;

[0130] Single upper air outlet mode 2: the first fan is turned on, the second fan is turned off, the air outlet of the auxiliary air duct is turned on, the air outlet of the upper air outlet duct is turned off, and the lower air outlet is turned off;

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

[0132] The control method provided in the present application is applied to the above-mentioned cabinet air conditioner, and the method comprises:

[0133] Obtaining the operating mode and set temperature of the cabinet air conditioner and periodically obtaining the indoor temperature;

[0134] determining an initial air supply mode according to the operation mode and the indoor temperature;

[0135] As the difference between the indoor temperature and the set temperature changes, controlling the cabinet air conditioner to switch the air supply mode based on the initial air supply mode;

[0136] Wherein, different air supply modes have different air supply volumes.

[0137] When the difference becomes smaller, the air supply mode is switched to an air supply mode with an air supply volume less than that of the initial air supply mode, or the air supply mode is switched to an air supply mode with a fan start-up number less than that of the initial air supply mode.

[0138] In one embodiment, the operation mode includes cooling and heating, and may also include dehumidification and ventilation, etc., which are not specifically limited in this embodiment. 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 acts.

[0139] In one embodiment, the air supply mode may include the air supply mode described above, specifically including the air supply mode including 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. Among them, the air supply volume is from large to small: 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. Among them, the air supply mode with two fan start-up numbers includes: up and down air outlet mode 1 and single up air outlet mode 1; the air supply mode with one fan start-up number includes: up and down air outlet mode 2, single up air outlet mode 2 and single down air outlet mode.

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

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

[0142] If so, switching to an air supply mode with an air supply volume less than the initial air supply mode or switching to an air supply mode with a fan start-up number less than the number of the initial air supply mode;

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

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

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

[0146] Optionally, in an implementation of this embodiment, determining the initial air supply mode according to the operation mode and the indoor temperature includes:

[0147] When the operation 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, wherein the air supply volumes of the first air supply mode, the second air supply mode and the third air supply mode decrease in sequence 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 operation 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, wherein the air supply volumes of the first air supply mode, the second air supply mode and the fourth air supply mode decrease successively 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 up and down air outlet mode 1, the second air supply mode is single up air outlet mode 1, the third air supply mode is up and down air outlet mode 2, and the fourth air supply mode is single down air outlet mode.

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

[0151] Determine a first degree to which the indoor temperature deviates from the set temperature by using the indoor temperatures obtained twice adjacently and the set temperature;

[0152] If the first degree is not greater than a preset first deviation threshold, switching to an air supply mode with an air supply volume less than the current air supply mode or switching to an air supply mode with a fan start-up number less than the number of the current air supply mode;

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

[0154] Determine a second degree to which the indoor temperature deviates from the set temperature by using the indoor temperatures obtained twice adjacently and the set temperature;

[0155] If the second degree is not greater than a preset second deviation threshold, switch to an air supply mode with an air supply volume less than the current air supply mode or switch to an air supply mode with a fan start-up number less than the number of the current air supply mode.

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

[0157] In the above-mentioned embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. The steps shown in the relevant flow chart can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flow chart, in some cases, the steps shown or described can be executed in an order different from that here. In other words, the order of steps described in the foregoing embodiments is only an example, and it is also within the scope of protection of the embodiments of the present application to reasonably adjust the order of steps based on the content of the embodiments of the present application.

[0158] In a specific implementation of the embodiment of the present application, the cabinet air conditioner and the control method thereof include the following processing procedures:

[0159] First, the schematic diagrams are described:

[0160] Figure 1 :Air conditioner section Figure 1 , showing the fan structure inside the air conditioner and the relative spatial position of the fan, heat exchanger 107, and air inlet grille. The fan system is composed of a single-suction single-outlet fan and a double-suction double-outlet fan. The upper fan is a single-suction single-outlet fan. The assembly form inside the air conditioner is that the axial direction of the fan is consistent with the front-to-back direction of the air conditioner, and the fan air inlet faces the air inlet grille on the back of the air conditioner. The lower fan is a double-suction double-outlet fan. The assembly form inside the air conditioner is that the radial direction of the fan is consistent with the front-to-back direction of the air conditioner, and the fan air inlet faces the left and right sides of the air conditioner.

[0161] Figure 2 :Air conditioner section Figure 2 , showing the internal structure assembly and air intake method of the fan on the air conditioner.

[0162] Figure 3 :Air conditioner section Figure 3 , showing the internal structure assembly and air intake method of the lower fan of the air conditioner.

[0163] Figure 4 : Air conditioner upper and lower air outlet mode 1, the upper and lower fans are turned on at the same time.

[0164] Figure 5 : Air conditioner upper and lower air outlet mode 2, the lower fan is turned on, and the upper fan is not turned on.

[0165] Figure 6 : The air conditioner is in single upper air outlet mode 1, the upper and lower fans are turned on at the same time, the damper of the lower air outlet of the air conditioner is closed, and the lower air outlet 103 of the lower fan does not blow air.

[0166] Figure 7 : Air conditioner single upper air outlet mode 2, the upper fan is turned on, and the lower fan is not turned on.

[0167] Figure 8 : The air conditioner is in single down-air outlet mode, the down fan is turned on, the up fan is not turned on, the air guide plate at the top air outlet of the air conditioner is closed, and no air is emitted from the up air outlet 101 of the down fan.

[0168] Fig. 9 : The relative position of the fan and the heat exchanger 107, the center line of the upper and lower fans coincides with the center line 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] Fig.10 : The air inlet range of the upper and lower fans, combined Fig. 9 The relative position relationship between the fan and the heat exchanger 107 is intended to ensure that when a single fan is turned on, the air inlet range of the fan covers at least the area of ​​the heat exchanger 1072 / 3, thereby 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 is composed of a single-suction single-outlet fan and a double-suction double-outlet fan. The upper fan is a single-suction single-outlet fan. The fan is assembled in the air conditioner in such a way that the fan's axial direction is consistent with the front-to-back direction of the air conditioner, the fan's air inlet faces the air inlet grille at the back of the air conditioner, and the air outlet faces the upper part of the air conditioner. The lower fan is a double-suction double-outlet fan. The fan is assembled in such a way that the fan's radial direction is consistent with the front-to-back direction of the air conditioner, the fan's air inlet faces the left and right sides of the air conditioner, and the air outlet faces the upper and lower parts of the air conditioner respectively.

[0172] This fan layout can make full use of the internal space of the air conditioner and make the fan blade diameter large enough, so that the air conditioner can output a larger air volume. This fan layout can make the air conditioner shell size as small as 390mm front to back (previously required 430mm) and 365mm left to right (previously required 400mm).

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

[0174] 1. The air conditioner is in upper and lower air outlet mode 1, and the upper and lower fans are turned on at the same time.

[0175] 2. The air conditioner is in upper and lower air outlet mode 2, the lower fan is turned on, and the upper fan is not turned on.

[0176] 3. In the single upper air outlet mode 1 of the air conditioner, the upper and lower fans are turned on at the same time, the damper of the lower air outlet of the air conditioner is closed, and the lower air outlet 103 of the lower fan does not blow air.

[0177] 4. In the air conditioner's upper air outlet mode 2, the upper fan is turned on and the lower fan is not turned on.

[0178] 5. In the single down-air outlet mode of the air conditioner, the down fan is turned on, the up fan is not turned on, the air guide plate at the top air outlet of the air conditioner is closed, and no air is emitted from the up air outlet 101 of the down fan.

[0179] The control method for cooling and heating is described below, wherein the cooling inner loop and the heating inner loop both refer to the indoor ambient temperature obtained by real-time measurement, which can be measured by the temperature detection device on the air conditioner. The preset inner loop is written into the air conditioner program to determine whether the indoor ambient temperature at the time of startup is too high or too low, and to predict the degree of user demand for cooling. The user set temperature is the required temperature set by the user for the air conditioner according to his own situation. δTv1 is a value representing the degree of temperature change, which is preset in the air conditioner program. When |T cooling inner loop 3-T user set temperature| / |T cooling inner loop 2-T user set temperature|≤δTv1, it indicates that the indoor ambient temperature changes slowly. Refrigeration inner loops 1, 2, 3 and 4 are the temperatures of the same position obtained at different times and are independent of each other; heating inner loops 1, 2, 3 and 4 are the temperatures of the same position obtained at different times and are independent of each other. Preset inner loops 1 and 2 are used for cooling mode, and preset inner loops 3 and 4 are used for heating mode. The preset temperature is not fixed. It is written into the air conditioner program to determine whether the indoor ambient temperature at the time of startup is too high or too low, and to predict the degree of cooling demand of the user. Therefore, it is a range, not a fixed value. △t1 and 2 are used in cooling mode, and △t3 and 4 are used in heating mode. They are independent values. δTv1 and δTv2 characterize temperature changes. δTv1 indicates the degree to which the indoor ambient temperature deviates from the user-set temperature when the indoor ambient temperature approaches the user-set temperature in cooling mode and the air conditioner continues to run.

[0180] δTv2 represents the degree to which the indoor ambient temperature deviates from the user-set temperature when the air conditioner continues to operate after the indoor ambient temperature approaches the user-set temperature in the heating mode.

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

[0182] For example: in cooling mode, when Tuser set temperature is 20℃, Tcooling inner loop 2 is 22℃, and Tcooling inner loop 3 is 24℃, |24-20| / |22-20|=2, and Tcooling inner loop 3 is 26℃, |26-20| / |22-20|=3. δTv1 value ≤ 2 means that the indoor ambient temperature is close to the user set temperature. After the air outlet mode is switched, the indoor ambient temperature rises less and deviates less from the user set temperature.

[0183] The specific control method of cooling mode is:

[0184] like Fig.11As shown, the cooling mode relies on detecting the indoor ambient temperature and comparing the change in the indoor ambient temperature with the user-set temperature, and adjusting different air outlet modes, which can not only meet the user's demand for indoor temperature reduction, but also meet the air conditioner's demand for energy saving.

[0185] 1. When T refrigeration inner loop 1 ≥ T preset inner loop 1, it means that the indoor ambient temperature is relatively high at this time, and the user has a greater demand for indoor temperature reduction. The air conditioner turns on the upper and lower air outlet mode 1, and the upper and lower air outlets 103 simultaneously deliver cold air with a large air volume, giving priority to lowering the indoor ambient temperature; when | T refrigeration inner loop 2 - T user set temperature | ≤ △t1, it means that the indoor ambient temperature is close to the user set temperature at this time, and the air supply mode of the air conditioner is switched 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 ... 3-Tuser set temperature| / |Trefrigeration inner loop 2-Tuser set temperature|≤δTv1, indicating that after the indoor temperature approaches the user set temperature, the indoor ambient temperature changes slowly, and the air supply mode of the air conditioner is switched to single upper air outlet mode 2, turning off the lower fan and only running the upper fan, further reducing the output of cooling capacity and correspondingly reducing the operating energy consumption of the air conditioner; when |Trefrigeration inner loop 4-Tuser set temperature|>△t2, indicating that the indoor ambient temperature has deviated from the user set temperature by a large margin, the air supply mode of the air conditioner is switched back to upper and lower air outlet mode 1, giving priority to lowering the indoor ambient temperature.

[0186] 2. When Tpreset inner loop 2<Tcooling inner loop 1<Tpreset inner loop 1, it means that the indoor ambient temperature is not high at this time, and the user's demand for indoor temperature reduction is not great. The air conditioner can meet the indoor temperature reduction demand by turning on the upper air outlet mode 1; when |Tcooling inner loop 2-Tuser set temperature|≤△t1, it means that the indoor ambient temperature is close to the user set temperature, and the air supply mode of the air conditioner is switched to upper and lower air outlet mode 2, the upper fan is turned off, and the lower fan is turned on, reducing the output of cooling, and correspondingly reducing the operating energy consumption of the air conditioner; when |Tcooling inner loop 3-Tuser set temperature| / |Tcooling inner loop 2-Tuser set temperature| When |T refrigeration inner loop 4 - T user set temperature | > △t2, it means that the indoor ambient temperature has deviated from the user set temperature by a large margin. The air supply mode of the air conditioner is switched to single upper air outlet mode 2, and the lower fan is turned off. Only the upper fan is running. The purpose is to utilize the characteristics of high density of cold air. The cooling cold air is sent out from the upper air outlet and sent to the top of the room. The cold air flow naturally settles, which is more conducive to maintaining the indoor ambient temperature. When |T refrigeration inner loop 4 - T user set temperature | > △t2, it means that the indoor ambient temperature has deviated from the user set temperature by a large margin. The air supply mode of the air conditioner is switched back to single upper air outlet mode 1, giving priority to lowering the indoor ambient temperature.

[0187] 3. When T refrigeration inner loop 1 ≤ T preset inner loop 2, it means that the indoor ambient temperature is low and the user's demand for indoor temperature reduction is low. The air conditioner turns on the upper and lower air outlet mode 2, and only turning on the lower fan can meet the indoor temperature reduction demand; when |T refrigeration inner loop 2-T user set temperature| ≤ △t1, it means that the indoor ambient temperature is close to the user set temperature, and the air supply mode of the air conditioner is switched to the single upper air outlet mode 2; when |T refrigeration inner loop 4-T user set temperature|>△t2, it means that the indoor ambient temperature has deviated from the user set temperature by a large margin, and the air supply mode of the air conditioner is switched back to the upper and lower air outlet mode 2, giving priority to lowering the indoor ambient temperature.

[0188] The specific control method of heating mode is:

[0189] like Fig.12 As shown, the heating mode relies on detecting the indoor ambient temperature and comparing the change in the indoor ambient temperature with the temperature set by the user, and adjusting different air outlet modes, which can not only meet the user's demand for indoor temperature rise, but also meet the demand for energy-saving operation of the air conditioner.

[0190] 1. When Theating inner loop 1 ≤ Tpreset inner loop 3, it means that the indoor ambient temperature is relatively low and the user has a greater demand for indoor temperature rise. The air conditioner turns on upper and lower air outlet mode 1, and the upper and lower air outlets 103 simultaneously deliver hot air with a large air volume to give priority to raising the indoor ambient temperature. When |Theating inner loop 2-Tuser set temperature| ≤ △t3, it means that the indoor ambient temperature is close to the user set temperature. The air supply mode of the air conditioner is switched to upper and lower air outlet mode 2, and the upper fan is turned off to reduce the heat output, which also reduces the operating energy consumption of the air conditioner accordingly. When |Theating inner loop 3-Tuser set temperature| / | Theating inner loop 2-Tuser set temperature|≤δTv2, indicating that after the indoor temperature approaches the user set temperature, the indoor ambient temperature changes slowly, and the air supply mode of the air conditioner is switched to the single bottom air outlet mode. The purpose is to utilize the characteristic of small hot air density. The heating 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 |Theating inner loop 4-Tuser set temperature|>△t4, indicating that the indoor ambient temperature has deviated from the user set temperature by a large margin, the air supply mode of the air conditioner is switched back to the upper and lower air outlet mode 1, giving priority to increasing the indoor ambient temperature.

[0191] 2. When Tpreset inner loop 3<Theating inner loop 1<Tpreset inner loop 4, it means that the indoor ambient temperature is not low at this time, and the user's demand for indoor temperature rise is not great. The air conditioner can meet the indoor temperature rise demand by turning on the upper and lower air outlet mode 2; when |Theating inner loop 2-Tuser set temperature|≤△t3, it means that the indoor ambient temperature is close to the user set temperature at this time, and the air supply mode of the air conditioner is switched to the single lower air outlet mode. The purpose is to utilize the characteristics of small hot air density. The heating hot air is sent out from the lower air outlet, and the hot air is sent to the bottom of the room. The hot air flow naturally rises, 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, that is, reducing the operating energy consumption of the air conditioner; when |Theating inner loop 3-Tuser set temperature|>△t4, it means that the indoor ambient temperature has deviated from the user set temperature by a large margin, and the air supply mode of the air conditioner is switched back to the upper and lower air outlet mode 2, giving priority to increasing the indoor ambient temperature.

[0192] 3. When Theating inner loop 1 ≥ Tpreset inner loop 4, it means 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 downward air outlet mode; when |Theating inner loop 2-Tuser set temperature|≤△t3, it means that the indoor ambient temperature is close to the user set temperature. The air supply mode of the air conditioner continues to be the single downward air outlet mode, and the fan speed is reduced by n revolutions, reducing the heat output and the fan energy consumption, that is, reducing the operating energy consumption of the air conditioner; when |Theating inner loop 3-Tuser set temperature|>△t4, it means that the indoor ambient temperature has deviated from the user set temperature by a large margin. The air supply mode of the air conditioner is switched back to the original single downward air outlet mode at the beginning of the startup, giving priority to increasing the indoor ambient temperature.

[0193] The sequence of serial numbers or introduction of the embodiments of the present application is for description only and does 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. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

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

[0196] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0197] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of 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, the process or function described in the embodiment of the present application is generated in whole or in part. 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 computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access, or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital versatile disc (DVD)), or a semiconductor medium (e.g., a solid state disk (SSD)). It is worth noting that the computer-readable storage medium mentioned in the embodiment of the present application may be a non-volatile storage medium, in other words, 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 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 relevant 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 three-dimensional virtual scene, the device information of the client, and the scene interaction information involved in the embodiments of this application are all obtained with full authorization.

[0199] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An air supply component, characterized in that: The cabinet air conditioner is applied to upper and lower air outlets, the cabinet air conditioner is provided with an upper air outlet, a lower air outlet and a rear air inlet, and the air supply component includes: A first fan, wherein the first fan is a single-suction single-outlet centrifugal fan, which is provided with a first air inlet and a first air outlet, and the axial direction of the first fan is the front-to-back direction of the cabinet air conditioner; a second fan, the second fan is a double-suction double-outlet centrifugal fan, which is provided with a second air inlet, a third air inlet, a second air outlet and a third air outlet, wherein the second air inlet and the third air inlet are both connected to the rear air inlet, the second air outlet is connected to the upper air outlet, the third air outlet is connected to the lower air outlet, and the axial direction of the second fan is the left-right direction of the cabinet air conditioner; A main air duct is connected between 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: An upper air outlet duct connecting the second air outlet of the second fan and the upper air outlet; A lower air outlet duct connecting the third air outlet of the second fan and the lower air outlet; The air supply assembly further includes an auxiliary air duct, which is located on one side of the main air duct and connects the rear air inlet with the upper air outlet; the first fan is arranged 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 wind control component can control the main air duct to achieve simultaneous air discharge from the upper and lower air ducts, or only the upper air outlet air duct, or only the lower air outlet air duct, or no air discharge from the upper and lower air ducts; Auxiliary air duct wind control component can control the auxiliary air duct to achieve upward air outlet or no air outlet; The air supply component is provided with a plurality of air supply modes according to the air control functions of the main air duct air control component and the auxiliary air duct air control component.

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

3. The air supply assembly according to claim 1, characterized in that: The diameter length 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 to 5, characterized in that: The first fan is located above the second fan and the first fan is located on the upper half of the air supply assembly.

7. A cabinet air conditioner, characterized in that: including the housing and the heat exchanger; The rear side of the shell is provided with a rear air inlet, the upper side of the shell is provided with an upper air outlet that can be selectively opened and closed, and the lower side of the shell is provided with a lower air outlet that can be selectively opened and closed; The heat exchanger is arranged inside the housing and close to the rear air inlet; An air supply assembly according to any one of claims 1 to 6 is provided in a shell of the heat exchanger on a side away from the rear air inlet.

8. The cabinet air conditioner according to claim 7, characterized in that: The center line between the first fan and the second fan coincides with the center line 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 0.4-0.

6.

9. A control method for the cabinet air conditioner according to claim 7 or 8, characterized in that: The method comprises: Obtaining the operating mode and set temperature of the cabinet air conditioner and periodically obtaining the indoor temperature; determining an initial air supply mode according to the operation mode and the indoor temperature; As the difference between the indoor temperature and the set temperature changes, controlling the cabinet air conditioner to switch the air supply mode based on the initial air supply mode; Wherein, different air supply modes have different air supply volumes. When the difference becomes smaller, the air supply mode is switched to an air supply mode with an air supply volume less than that of the initial air supply mode, or the air supply mode is switched to an air supply mode with a fan start-up number less than that of the initial air supply mode.

10. The control method according to claim 9, characterized in that: The step of controlling the cabinet air conditioner to switch the air supply mode 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 indoor temperature and the set temperature obtained periodically does not exceed a preset first temperature difference threshold; If so, switching to an air supply mode with an air supply volume less than the initial air supply mode or switching to an air supply mode with a fan start-up number less than the number of the initial air supply mode; Determine whether the absolute value of the difference between the indoor temperature and the set temperature obtained periodically is not less than a preset second temperature difference threshold; If yes, switch to the initial air supply mode.

11. The control method according to claim 10, characterized in that: Determining the initial air supply mode according to the operation mode and the indoor temperature includes: When the operation 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, wherein the air supply volumes of the first air supply mode, the second air supply mode and the third air supply mode decrease in sequence 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 operation 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, wherein the air supply volumes of the first air supply mode, the second air supply mode and the fourth air supply mode decrease successively 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 operation mode is cooling and the initial air supply mode is the first air supply mode or the second air supply mode, before determining whether the absolute value of the difference between the periodically obtained indoor temperature and the set temperature is not less than a preset second temperature difference threshold, the method further includes: Determine a first degree to which the indoor temperature deviates from the set temperature by using the indoor temperatures obtained twice adjacently and the set temperature; If the first degree is not greater than a preset first deviation threshold, switching to an air supply mode with an air supply volume less than the current air supply mode or switching to an air supply mode with a fan start-up number less than the number of the current air supply mode; If the operation mode is heating and the initial air supply mode is the first air supply mode, before determining whether the absolute value of the difference between the periodically obtained indoor temperature and the set temperature is not less than a preset second temperature difference threshold, the method further includes: Determine a second degree to which the indoor temperature deviates from the set temperature by using the indoor temperatures obtained twice adjacently and the set temperature; If the second degree is not greater than a preset second deviation threshold, switch to an air supply mode with an air supply volume less than the current air supply mode or switch to an air supply mode with a fan start-up number less than the number of the current air supply mode.

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