Airflow delivery device, air conditioner and control method

Abstract

The application discloses an air flow conveying device, an air conditioner and a control method. The air flow conveying device comprises a shell, an upper grid cavity and a lower grid cavity which are connected in communication and are formed by being hollowed in the shell; an upper air inlet and an upper air outlet which are connected in communication with the upper grid cavity are arranged at one end of the shell away from the lower grid cavity; a lower air inlet and a lower air outlet which are connected in communication with the lower grid cavity are arranged on the side surface close to the bottom of the shell; two air supply assemblies are arranged in the air flow channel between the upper grid cavity and the lower grid cavity; each air supply assembly comprises a first fan and a second fan which is arranged on the side of the air outlet direction of the first fan and is coaxially arranged with the first fan; and an evaporator is arranged between the two air supply assemblies. Compared with the air flow conveying device in the existing part of the air conditioner, the air volume of the whole air outlet is improved, the noise generated is the same or smaller, the temperature distribution is uniform, and the effect of rapid temperature rise / temperature drop is realized.

Description

Technical Field

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

[0002] Reversible air supply air conditioners are used to achieve large indoor air circulation; for example, when cooling, hot air enters from the bottom and cold air is blown out from the upper air outlet; when heating, cold air enters from the top and hot air is blown out from the lower air outlet. By utilizing the air density difference to enhance the mixing of the upper and lower air, the vertical temperature difference is reduced, and the indoor temperature uniformity is good.

[0003] Some existing reversible air-supply air conditioners have limited areas of upper and lower air outlets and large internal flow resistance, resulting in small air volume and high noise. In addition, since the air intake and air outlet methods of such reversible air-supply air conditioners are relatively simple and not diverse enough, they cannot adapt to different application scenarios and meet user needs. Summary of the Invention

[0004] In order to overcome the deficiencies of the existing technical solutions, embodiments of the present invention provide an air flow conveying device, an air conditioner, and a control method.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] In a first aspect, an embodiment of the present invention provides an airflow conveying device, comprising:

[0007] A housing, wherein the housing is hollow and forms an upper grille cavity and a lower grille cavity that are connected to each other; an upper air inlet and an upper air outlet that are connected to the upper grille cavity are provided at one end of the housing away from the lower grille cavity, and a lower air inlet and a lower air outlet that are connected to the lower grille cavity are provided on a side surface near the bottom of the housing;

[0008] Air supply components, both of which are arranged in the air flow channel between the upper grille cavity and the lower grille cavity; each of the air supply components includes a first fan and a second fan arranged on one side of the air outlet direction of the first fan and coaxially arranged with the first fan;

[0009] An evaporator is arranged between the two air supply components.

[0010] In a second aspect, an embodiment of the present invention further provides an air conditioner, comprising a control module and the air flow conveying device described in the first aspect above, wherein the control module is controllably connected to each air supply component in the air flow conveying device.

[0011] In a third aspect, an embodiment of the present invention further provides a control method, which is applied to the control module of the air conditioner described in the second aspect above, and includes:

[0012] Receive operation adjustment instructions sent from the user end;

[0013] Determine an operation mode of the air flow conveying device corresponding to the operation adjustment instruction; wherein the operation mode includes an air supply mode and a temperature control mode;

[0014] The operation of the air flow conveying device is controlled according to the operation mode of the air flow conveying device.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The outside air flows from the upper air inlet or the lower air inlet to the upper grille cavity or the lower grille cavity. Since the upper grille cavity is connected to the lower grille cavity, the air in the upper grille cavity is blown to the lower grille cavity or the air in the lower grille cavity is blown to the upper grille cavity through the blowing action of the first fan and the second fan of each air supply component. Then, the air is heat exchanged through the evaporator so that the heated or cooled air is discharged into the room through the upper air outlet or the lower air outlet. In this way, the density difference between the cold and hot air is utilized to enhance the convection and heat exchange of the upper and lower air in the room. Compared with the air flow conveying device in some existing air conditioners, the overall air outlet volume is increased. At the same time, the noise generated is the same or smaller, and the temperature distribution is uniform and the temperature rise / fall effect is achieved.

[0017] Different operation adjustment instructions are sent to the control module through the user terminal. When the operation mode of the air flow conveying device corresponding to the operation adjustment instruction is determined, such as the high air volume mode, long-distance air supply mode and bass control mode in the embodiment of the present invention, the operation of the air flow conveying device is finally controlled according to the determined operation mode of the air flow conveying device. Through the control method of the air flow conveying device in the air conditioner in the above embodiment of the embodiment of the present invention, multiple air supply modes can be realized, thereby meeting the different experience needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 1 is an overall structural diagram of an air flow conveying device according to an embodiment of the present invention.

[0020] Figure 2FIG. 1 is a schematic diagram of airflow in the heating mode of the airflow conveying device according to an embodiment of the present invention.

[0021] Figure 3 FIG. 1 is a schematic diagram of air flow in the cooling mode of the air flow conveying device according to an embodiment of the present invention.

[0022] Figure 4 4 is a structural diagram of a first fan of an air flow conveying device according to an embodiment of the present invention.

[0023] Figure 5 4 is a structural diagram of a second fan of an air flow conveying device according to an embodiment of the present invention.

[0024] Figure 6 It is a flowchart of the steps of the control method according to an embodiment of the present invention.

[0025] Figure 7 This is a flow field diagram of an air duct of a simulated airflow of an airflow conveying device according to an embodiment of the present invention in a high air volume control mode.

[0026] Figure 8 This is a flow field diagram of the air duct of the air flow conveying device according to an embodiment of the present invention in the bass control mode.

[0027] Numbers in the figure

[0028] 1. Housing; 11. Upper grille cavity; 111. Upper air inlet; 112. Upper air outlet; 12. Lower grille cavity; 121. Lower air inlet; 122. Lower air outlet;

[0029] 2. Air supply assembly; 21. First fan; 211. Fan blade structure; 2111. Impeller; 2112. Fan blade; 22. Second fan; 221. Connecting ring; 222. Rib;

[0030] 3. Evaporator. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0033] It should also be understood that the terms used in the present specification are only for the purpose of describing particular embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0034] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0035] In order to solve the technical problem that the existing reversible air supply air conditioner has a large internal flow resistance, resulting in a small air volume and high noise; for this purpose, an embodiment of the present invention provides an air flow conveying device.

[0036] The following describes in detail the specific structure of an air flow conveying device provided by an embodiment of the present invention. Figure 1-5 As shown in FIG, the specific structure of the air flow conveying device includes a shell 1, an air supply component 2 and an evaporator 3.

[0037] according to Figure 2-3 As shown, the shell 1 is hollow to form an upper grille cavity 11 and a lower grille cavity 12 that are connected to each other; an upper air inlet 111 and an upper air outlet 112 that are connected to the upper grille cavity 11 are provided at one end of the shell 1 away from the lower grille cavity 12, and a lower air inlet 121 and a lower air outlet 122 that are connected to the lower grille cavity 12 are provided on the side near the bottom of the shell 1.

[0038] Specifically, during operation, external air flows from the upper air inlet 111 or the lower air inlet 121 into the upper grille cavity 11 or the lower grille cavity 12. Since the upper grille cavity 11 is connected to the lower grille cavity 12, the air in the upper grille cavity 11 is blown to the lower grille cavity 12 or the air in the lower grille cavity 12 is blown to the upper grille cavity 11 under the action of the guided flow of each air supply component 2, and finally the heated or cooled air is discharged into the room through the upper air outlet 112 or the lower air outlet 122.

[0039] For example, during cooling, the external air flows from the lower air inlet 121 into the lower grille cavity 12, and then, under the action of the guided flow of each air supply component 2, the air after temperature adjustment by the heat exchanger is blown into the upper grille cavity 11, and finally the air in the upper grille cavity 11 is discharged through the upper air outlet 112.

[0040] The upper grille cavity 11 and the lower grille cavity 12 in the shell 1 are arranged longitudinally. For example, under the action of each air supply component 2, the air in the upper grille cavity 11 can be directly guided to blow into the lower grille cavity 12 after temperature adjustment, thereby improving the air flow efficiency. At the same time, it can also reduce the noise generated when the air flows between the upper grille cavity 11 and the lower grille cavity 12, providing a quieter user experience.

[0041] It should be noted that the upper grille cavity 11 and the lower grille cavity 12 serve as channels for air flow, responsible for distributing the treated air to various areas in the room, and can also collect return air in the room to form an air circulation flow.

[0042] In a further embodiment, baffles and drive components connected to the baffles are provided in the upper air inlet 111, the lower air inlet 121, the upper air outlet 112 and the lower air outlet 122, and the drive components are used to drive the baffles to open or close the upper air inlet 111, the lower air inlet 121, the upper air outlet 112 and the lower air outlet 122.

[0043] The above-mentioned driving assembly includes a driving assembly and a baffle, and the baffle is driven by a motor to move, thereby opening or closing the upper air inlet 111, the lower air inlet 121, the upper air outlet 112 and the lower air outlet 122.

[0044] according to Figure 1-3 As shown, the two air supply components 2 are both arranged in the air flow channel between the upper grille cavity 11 and the lower grille cavity 12, and the two air supply components 2 are symmetrically arranged.

[0045] Specifically, when the air flow conveying device is in operation, when the external air flows into the upper grille cavity 11 or the lower grille cavity 12 through the upper air inlet 111 or the lower air inlet 121, then, by driving each air supply component 2 to operate simultaneously, since each air supply component 2 is arranged in the air flow channel between the upper grille cavity 11 and the lower grille cavity 12, each air supply component 2 generates airflow when operating, so that the air in the upper grille cavity 11 is blown to the lower grille cavity 12 or the air in the lower grille cavity 12 is blown to the upper grille cavity 11, thereby playing the role of air supply. At the same time, through the two air outlet modes, the density difference between cold and hot air is utilized to enhance the convection and heat exchange of the upper and lower air in the room, thereby achieving uniform temperature distribution and rapid heating / cooling effects in the room.

[0046] It should be noted that by adjusting the rotation direction of the fans in each air supply assembly 2 , the external air flow can enter the upper grille cavity 11 or the lower grille cavity 12 from the upper air inlet 111 or the lower air inlet 121 .

[0047] according to Figure 1-3As shown, specifically, each air supply assembly 2 comprises a first fan 21 and a second fan 22 arranged coaxially with the first fan 21 on the air outlet direction side of the first fan 21.

[0048] Specifically, the first fans 21 of the two air supply assemblies 2 are respectively close to the air flow passages of the upper and lower grid cavities 11 and 12, and the second fans 22 of the two air supply assemblies 2 are arranged oppositely and respectively on the air outlet direction of each first fan 21. Therefore, when each air supply assembly 2 is in operation, the air in one of the grid cavities is first blown by the first fan 21 towards the direction of the second fan 22, and then blown by the second fan 22 to the other grid cavity, so that the air supply assembly 2 can reduce the air volume difference between the upper and lower air supply modes.

[0049] It should be noted that the second fan 22 of each air supply assembly 2 in the embodiment of the present application is a hollow axial fan, so that the air flow resistance can be reduced when the first fan 21 blows air towards the second fan 22. Compared with the existing reversible air supply air conditioner, the air conditioner using the air flow conveying device of the embodiment of the present application can provide greater air volume under the same noise.

[0050] According to Figure 1-3 As shown, the evaporator 3 is arranged between the two air supply assemblies 2, and specifically, an evaporation cavity for accommodating the evaporator 3 is further formed in the shell 1, and the evaporation cavity is arranged between the upper and lower grid cavities 11 and 12, so that the evaporator 3 of the embodiment of the present application is arranged between the second fans 22 of the two air supply assemblies 2.

[0051] Specifically, before the second fan 22 of each air supply assembly 2 blows air to the upper or lower grid cavity 11 or 12, the air needs to be blown to the evaporator 3, and the air is heat exchanged by the evaporator 3 to be cooled or heated, and then discharged to the indoor, so as to realize indoor temperature control.

[0052] For example, when cooling is required, the second fan 22 blows air from the lower grille cavity 12 toward the evaporator 3. The cooling pipes of the evaporator 3 cool the outdoor air, causing it to lose heat, thereby lowering its temperature. The cool air, after heat exchange, is then discharged into the room, thereby cooling the room. Conversely, when heating is required, the second fan 22 blows air from the upper grille cavity 11 toward the evaporator 3. The evaporator 3 releases heat stored in the refrigerant to heat the air. More specifically, the evaporator 3 absorbs heat from the low-temperature indoor air, causing the refrigerant therein to evaporate into low-pressure vapor. This low-pressure vapor is then compressed by the compressor, increasing its temperature and pressure. Subsequently, the high-temperature, high-pressure vapor passes through the condenser, releasing heat into the indoor environment, raising the temperature of the indoor air and warming the room. It should be noted that the refrigerant in the condenser condenses into a liquid, then passes through the expansion valve to reduce its pressure before re-entering the evaporator 3, completing a cycle.

[0053] It will be appreciated that the evaporator 3 of the embodiment of the present invention is conical or has a V-shaped half-cross-section. This configuration increases the heat exchange area and improves heat exchange efficiency. During the heat exchange process, this configuration increases the heat exchange area, thereby increasing the contact area between the air and the evaporator 3, thereby accelerating heat transfer. It also helps evenly distribute the airflow velocity onto the surface of the evaporator 3, thereby improving heat exchange efficiency.

[0054] In a further embodiment, the first fan 21 and the second fan 22 each include a mounting base, a driving assembly and a fan blade structure 211 ; the driving assembly is disposed on the mounting base, and the fan blade structure 211 is disposed on an output shaft of the driving assembly.

[0055] Specifically, the mounting base is arranged between the upper grille cavity 11 or the lower grille cavity 12 and the evaporation cavity, and is used to support the driving component and the fan blade structure 211. When the air in the upper grille cavity 11 or the lower grille cavity 12 is blown to the evaporator 3, the output shaft of the driving component is used to drive the fan blade structure 211 to rotate at high speed, thereby generating an airflow so that the air can be blown into the evaporator 3 for heat exchange.

[0056] Since the direction of airflow delivery is achieved by adjusting the rotation direction of the output shaft of the driving assembly, for example, when the blade structure 211 of each fan of the air supply assembly 2 close to the lower grille cavity 12 rotates forward, the air located in the lower grille cavity 12 is blown into the upper grille cavity 11; conversely, when the blade structure 211 of each fan of the air supply assembly 2 close to the lower grille cavity 12 rotates reversely, the air located in the upper grille cavity 11 is blown into the lower grille cavity 12.

[0057] It can be understood that the driving component in the embodiment of the present invention is a motor.

[0058] according to Figure 4 As shown, specifically, each fan blade structure 211 of the embodiment of the present invention includes an impeller 2111 and multiple fan blades 2112. Specifically, the impeller 2111 is mounted on the output shaft of the drive assembly. The output shaft drives the impeller 2111 to rotate at high speed along its circumference, so that each fan blade 2112 moves in the direction of rotation of the impeller 2111, thereby generating an airflow for propulsion. Because the fan blades 2112 are evenly arranged along the circumference of the impeller 2111, when each fan blade 2112 moves in the direction of rotation of the impeller 2111, a uniform airflow is generated, while also reducing vibration and noise.

[0059] In a further embodiment, the angle between the long side direction of the blade root mounting surface of each wind blade 2112 and the radial direction of the impeller 2111 is 30°-45°.

[0060] Specifically, the installation angle of each wind blade 2112 is within the range of 30°-45°. This setting enables the wind blade structure 211 to convert kinetic energy more effectively when rotating at high speed, thereby improving the operating efficiency and performance of the wind blade and avoiding energy loss.

[0061] For example, the angle between the long side direction of the root mounting surface of each wind blade 2112 of the embodiment of the present invention and the radial direction of the impeller 2111 is 32°. This setting optimizes the direction and speed of air flow. Therefore, when the wind blades 2112 of the wind blade structure 211 rotate at high speed, the air flow can be more uniform, thereby improving the working efficiency of the fan and reducing noise.

[0062] In a further embodiment, the number of the wind blades 2112 is an odd number not less than three.

[0063] Specifically, in order to reduce the problems of uneven wind force and increased noise caused by the generation of vortexes when the wind blades 2112 of the wind blade structure 211 rotate at high speed, the specific number of wind blades 2112 in the embodiment of the present invention is set to an odd number not less than 3. This setting helps to reduce the generation of vortexes and make the airflow more uniform and smooth, thereby reducing noise and providing a more comfortable environment.

[0064] For example, the optimal number of wind blades 2112 in the embodiment of the present invention is 5. This number of wind blades 2112 is used in the air flow conveying device of the embodiment of the present invention, which can more effectively push the air and ensure that uniform airflow can be provided in different working modes (such as cooling and heating).

[0065] Since the installation space inside the shell 1 is limited, in order to prevent the outer diameter of each wind blade 2112 of the wind blade structure 211 from being too large and thus unable to be assembled, the outer diameter of each wind blade 2112 of each wind blade structure 211 in the embodiment of the present invention is 280mm-320mm. Thus, the outer diameter of each wind blade 2112 of each wind blade structure 211 is reduced. At the same time, at the same rotation speed, the wind blades 2112 of each wind blade structure 211 in the embodiment of the present invention have a larger air volume when rotating at high speed.

[0066] For example, the outer diameter of each wind blade 2112 of the wind blade structure 211 of the embodiment of the present invention is preferably 308 mm. This configuration enables each wind blade 2112 of the wind blade structure 211 to drive more air flow when rotating, thereby improving the air supply efficiency.

[0067] It should be noted that the outer diameter of each blade 2112 of the blade structure 211 of the second fan 22 is 50%-70% of the outer diameter of each blade 2112 of the blade structure 211 of the first fan 21. Taking 50% as an example, if the outer diameter of each blade 2112 of the blade structure 211 of the first fan 21 is 308 mm, then the outer diameter of each blade 2112 of the blade structure 211 of the second fan 22 is 154 mm.

[0068] according to Figure 5 As shown, in some specific embodiments, the fan blade structure 211 of the second fan 22 also includes a connecting ring 221, which is fixedly arranged on the impeller 2111, and an air flow cavity for air circulation is formed between the connecting ring 221 and the impeller 2111; the roots of the multiple blades 2112 of the fan blade structure 211 of the second fan 22 are all arranged on the outside of the connecting ring 221.

[0069] Specifically, before the heated or cooled air is blown into the upper grille cavity 11 or the lower grille cavity 12, it needs to pass through the second fan 22 of each air supply component 2. Therefore, in order to prevent the second fan 22 from being set in the air outlet direction of the first fan 21 and affecting the flow of air, the roots of the multiple wind blades 2112 of the second fan 22 are all connected to the outer side of the circumference of the connecting ring 221, and the inner side of the connecting ring 221 is fixedly connected to the outer side of the impeller 2111. In addition, an airflow cavity is formed between the connecting ring 221 and the impeller 2111. When the first fan 21 blows the air, the air can be smoothly blown into the upper grille cavity 11 or the lower grille cavity 12 through the airflow cavity, thereby reducing the resistance generated by the second fan 22 when the air flows.

[0070] It can be understood that the airflow cavity of the embodiment of the present invention is an annular cavity or has multiple airflow cavities distributed along the circumference (the specific details are not limited here). This arrangement increases the range of the airflow and reduces the resistance encountered by the air during flow.

[0071] according to Figure 5 As shown, in a further embodiment, a plurality of ribs 222 are provided along the inner circumference of the connecting ring 221 , and one side of each rib 222 is connected to the impeller 2111 for supporting the connecting ring 221 .

[0072] Specifically, in order to prevent the connecting ring 221 from shaking or deforming violently when rotating at high speed following the rotation direction of the impeller 2111, a plurality of ribs 222 are arranged between the inner side of the connecting ring 221 and the outer side of the impeller 2111. The ribs 222 are used to support the connecting ring 221, thereby enhancing the structural strength of the connecting ring 221 and ensuring that the connecting ring 221 will not be deformed or damaged when the fan is running. At the same time, under the support of the ribs 222, the connecting ring 221 and each wind blade 2112 can resist the stress caused by the vibration, thereby avoiding damage or noise due to vibration.

[0073] To sum up the above, the external air flows from the upper air inlet 111 or the lower air inlet 121 to the upper grille cavity 11 or the lower grille cavity 12. Since the upper grille cavity 11 is connected to the lower grille cavity 12, the air in the upper grille cavity 11 is blown to the lower grille cavity 12 or the air in the lower grille cavity 12 is blown to the upper grille cavity 11 by the blowing action of the first fan 21 and the second fan 22 of each air supply component 2. Subsequently, the air is heat exchanged through the evaporator 3 so that the heated or cooled air is discharged into the room through the upper air outlet 112 or the lower air outlet 122. In this way, the density difference between the cold and hot air is utilized to enhance the convection and heat exchange of the upper and lower air in the room. Compared with the air flow conveying device in some existing air conditioners, the overall air outlet volume is increased. At the same time, the noise generated is the same or smaller, and the temperature distribution is uniform and the temperature rise / fall effect is achieved.

[0074] An embodiment of the present invention also provides an air conditioner, specifically, the air conditioner includes a control module and the air flow conveying device of any of the above embodiments, the control module is controlled and connected to each air supply component 2 in the air flow conveying device, and is used to control the blowing action of the first fan 21 and the second fan 22 of each air supply component 2, so that the air located in the upper grille cavity 11 is blown to the lower grille cavity 12 or the air located in the lower grille cavity 12 is blown to the upper grille cavity 11, and then the air is heat exchanged through the evaporator 3 so that the heated or cooled air is discharged into the room through the upper air outlet 112 or the lower air outlet 122.

[0075] according to Figure 6As shown, an embodiment of the present invention further provides a control method, which is applied to the control module of the air conditioner in any of the above embodiments. Specifically, the following is a detailed description of the specific steps of the control method provided by the embodiment of the present invention, which includes:

[0076] Step S110: receiving an operation adjustment instruction sent from a user terminal.

[0077] Specifically, the control module establishes a communication connection between the user end and the air flow conveying device in the air conditioner for transmitting instructions and data. When the control module receives an operation adjustment instruction sent from the user end, it parses the received instruction to obtain the specific content and requirements of the instruction.

[0078] It is understood that the user end of the embodiment of the present invention is a user end device such as a remote control or a mobile terminal (mobile phone or tablet) application, which is used to send the operation adjustment instruction. The control module can process the received operation adjustment instruction accordingly through a built-in program or algorithm.

[0079] Step S120 , determining the operation mode of the air flow conveying device corresponding to the operation adjustment instruction; wherein the operation mode includes an air supply mode and a temperature control mode.

[0080] Specifically, since the air conditioner can enter different operating modes to meet the user's usage needs, when one of the operation adjustment instructions is selected on the user side, the control module parses the received operation adjustment instruction. Based on the information in the operation adjustment instruction, the control module performs logical matching to determine the operation mode corresponding to the operation adjustment instruction, thereby identifying the operation mode of the air flow conveying device required by the user.

[0081] Step S130 , controlling the operation of the airflow conveying device according to the operation mode of the airflow conveying device.

[0082] Specifically, the operation modes of the air flow conveying device of the embodiment of the present invention include multiple air supply modes and temperature control modes. Therefore, according to the operation adjustment instruction sent by the user end, the control module controls the different operation modes of the air flow conveying device in the air conditioner.

[0083] In some specific embodiments, the air supply mode includes a high air volume mode, a long-distance air supply mode, a bass control mode, and a normal control mode. In step S130, the operation of the air flow conveying device is controlled according to the operation mode of the air flow conveying device, specifically including the following four operation mode embodiments:

[0084] In the first embodiment, if the air supply mode is the high air volume mode, the first fan 21 and the second fan 22 of the two air supply components 2 are started and the upper air inlet 111 and the lower air inlet 121 are opened.

[0085] Specifically, in the high air volume mode, the upper air inlet 111 and the lower air inlet 121 are opened at the same time so that the air flow device in the air conditioner can absorb more indoor air; at the same time, the first fan 21 and the second fan 22 of all the air supply components 2 operate at the same time to provide the maximum blowing volume, so that the air flows quickly, thereby quickly taking away the heat or cold in the room and achieving rapid temperature rise or temperature drop.

[0086] In the second embodiment, if the air supply mode is the long-distance air supply mode and the temperature control mode is the cooling mode, the first fan 21 and the second fan 22 of the two air supply components 2 are started, the lower air inlet 121 is opened and the upper air inlet 111 is closed; if the air supply mode is the long-distance air supply mode and the heating mode, the first fan 21 and the second fan 22 of the two air supply components 2 are started, the upper air inlet 111 is opened and the lower air inlet 121 is closed.

[0087] Specifically, when cooling, the upper air outlet 112 and the lower air inlet 121 are opened, and at the same time, the upper air inlet 111 is closed. At this time, the external air enters the lower grille cavity 12 through the lower air inlet 121, and is quickly sent out from the upper air outlet 112 after being cooled. Since the first fan 21 and the second fan 22 of the air supply assembly 2 are in a fully open state, the air supply volume is large, so that the cold air can quickly cover a farther area, thereby achieving the effect of long-distance air supply. At the same time, due to the temperature difference and air flow in the room, it can also promote the indoor temperature to Uniformity; on the contrary, when heating, open the lower air outlet 122 and the upper air inlet 111, and at the same time, close the lower air inlet 121. At this time, air is sent out from the lower air outlet 122, and at the same time, outdoor cold air is inhaled through the upper air inlet 111; due to the rising characteristic of hot air, coupled with the blowing effect of each air supply component 2, the hot air can be quickly diffused to every corner of the room. At the same time, by inhaling outdoor cold air, the indoor temperature is accelerated to balance, thereby achieving an increase in the indoor temperature in a short time and achieving uniform temperature distribution in a larger area.

[0088] In the third embodiment, if the air supply mode is the bass control mode and the temperature control mode is the cooling mode, the first fan 21 of the air supply component 2 close to the upward grille cavity 11 and the second fan 22 of the other air supply component 2 are started, and the upper air inlet 111 and the lower air inlet 121 are opened; if the air supply mode is the bass control mode and the heating mode, the second fan 22 of the air supply component 2 close to the upward grille cavity 11 and the first fan 21 of the other air supply component 2 are started, and the upper air inlet 111 and the lower air inlet 121 are opened.

[0089] Specifically, in the cooling mode, the upper air inlet 111 and the lower air inlet 121 are opened to ensure sufficient air circulation, and the first fan 21 of the air supply assembly 2 close to the upper grille cavity 11 and the second fan 22 of another air supply assembly 2 are started to quickly blow cold air into the room, thereby achieving the effect of rapid cooling. The first fan 21 and the second fan 22 of the other two air supply assemblies 2 are closed, thereby reducing air turbulence and disturbance, thereby reducing mechanical noise caused by vibration and friction, and thus the generated noise value is lower; conversely, in the heating mode, similar to the cooling mode, the upper air inlet 111 and the lower air inlet 121 are opened, and the second fan 22 of the air supply assembly 2 close to the upper grille cavity 11 and the first fan 21 of another air supply assembly 2 are started to blow hot air downward to ensure uniform distribution of indoor temperature; similarly, by closing the first fan 21 and the second fan 22 of the other two air supply assemblies 2, air turbulence and disturbance are reduced, thereby reducing mechanical noise and aerodynamic noise, and thus the generated noise value is lower.

[0090] In the fourth embodiment, if the air supply mode is the conventional control mode and the temperature control mode is the cooling mode, the first fan 21 of the air supply assembly 2 close to the upper grille cavity 11 and the second fan 22 of another air supply assembly 2 are started, the lower air inlet 121 is opened, and the upper air inlet 111 is closed; if the air supply mode is the conventional control mode and the heating mode, the second fan 22 of the air supply assembly 2 close to the upper grille cavity 11 and the first fan 21 of another air supply assembly 2 are started, the upper air inlet 111 is opened, and the lower air inlet 121 is closed.

[0091] Specifically, in the cooling mode, only the first fan 21 of the air supply assembly 2 close to the upper grille cavity 11 and the second fan 22 of another air supply assembly 2 are started to blow air from the lower grille cavity 12 into the upper grille cavity 11, and the lower air inlet 121 is opened and the upper air inlet 111 is closed to enable the cold air to be stably discharged into the room; conversely, in the heating mode, only the second fan 22 of the air supply assembly 2 close to the upper grille cavity 11 and the first fan 21 of another air supply assembly 2 are started to blow air from the upper grille cavity 11 into the lower grille cavity 12, and the upper air inlet 111 is opened and the lower air inlet 121 is closed to enable the hot air to be stably discharged into the room. The air flow conveying device in the air conditioner in the conventional control mode controls each air supply assembly 2 and each air inlet and air outlet to improve the balance of noise, air volume and air supply distance in the cooling or heating mode, which is suitable for most home use environments and provides more comfortable room temperature.

[0092] The following is a statistical table of simulation results of the air flow conveying device of the air conditioner in four operation modes (assuming that the rotational speed value of the first fan 21 and the second fan 22 of each air supply assembly 2 is set as Nrpm), as follows:

[0093]

[0094]

[0095] It should be noted that in the above statistical table, negative values ​​of air volume are outgoing air, and positive values ​​are incoming air; the values ​​marked with "*" in the average wind speed are the outgoing wind speed.

[0096] The above simulation results show that the airflow from the upper outlet is greater than that from the lower outlet in all operating modes. The lower outlet airflow is approximately 90% of the upper outlet airflow, indicating a small difference in airflow volume. While the airflow volume decreases when the number of air outlets is reduced, the airflow speed increases, extending the air delivery distance.

[0097] according to Figure 7-8 As shown in the figure, the simulated value of the air volume at N rpm in the large air volume control mode is 858m 3 / h, bass control mode (N+300) rpm upper air volume simulation value is 825m 3 When the number of fans is reduced and the air volume is roughly the same, when only the first fan 21 of the air supply assembly 2 and the second fan 22 of another air supply assembly 2 are turned on or off, the air duct flow field of the air flow is smoother than the air duct flow field of the air flow when the first fan 21 and the second fan 22 of each air supply assembly 2 are started at the same time, and the overall vortex area is smaller, thereby avoiding the generation of greater noise.

[0098] To sum up the above, different operation adjustment instructions are sent to the control module through the user end. When the operation mode of the air flow conveying device corresponding to the operation adjustment instruction is determined, such as the large air volume mode, long-distance air supply mode and bass control mode in the embodiment of the present invention, the operation of the air flow conveying device is finally controlled according to the determined operation mode of the air flow conveying device. Through the control method of the air flow conveying device in the air conditioner in the above embodiment of the embodiment of the present invention, a variety of air supply modes can be realized, thereby meeting the different experience needs of users.

[0099] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. An air flow conveying device, characterized in that: The air flow conveying device comprises: A housing, wherein the housing is hollow and forms an upper grille cavity and a lower grille cavity that are connected to each other; an upper air inlet and an upper air outlet that are connected to the upper grille cavity are provided at one end of the housing away from the lower grille cavity, and a lower air inlet and a lower air outlet that are connected to the lower grille cavity are provided on a side surface near the bottom of the housing; Air supply components, both of which are arranged in the air flow channel between the upper grille cavity and the lower grille cavity; each of the air supply components includes a first fan and a second fan arranged on one side of the air outlet direction of the first fan and coaxially arranged with the first fan; an evaporator, the evaporator being arranged between the two air supply components; The first fan and the second fan each include a mounting base, a drive assembly, and a fan blade structure; the drive assembly is disposed on the mounting base, and the fan blade structure is disposed on an output shaft of the drive assembly; Each of the fan blade structures includes an impeller and a plurality of fan blades, and each of the fan blades is evenly arranged along the circumference of the impeller; The blade structure of the second fan further includes a connecting ring, which is fixedly arranged on the impeller, and an airflow cavity for airflow is formed between the connecting ring and the impeller; The roots of the multiple blades of the blade structure of the second fan are all arranged on the outside of the connecting ring; the ratio of the outer diameter of the blades in the second fan to the outer diameter of the blades in the first fan is 50%-70%.

2. The air flow conveying device according to claim 1, characterized in that: The angle between the long side direction of the blade root mounting surface of each wind blade and the radial direction of the impeller is 30°-45°.

3. The air flow conveying device according to claim 1, characterized in that: The number of the wind blades is an odd number not less than 3.

4. The air flow conveying device according to claim 1, characterized in that: A plurality of ribs are provided along the inner circumference of the connecting ring, and one side of each rib is connected to the impeller for supporting the connecting ring.

5. An air conditioner, characterized in that: The air conditioner comprises a control module and the air flow conveying device according to any one of claims 1 to 4, wherein the control module is controllably connected to each air supply component in the air flow conveying device.

6. A control method, applied to the air conditioner control module according to claim 5, characterized in that: The control method includes: Receiving operation adjustment instructions sent from the user end; Determine an operation mode of the air flow conveying device corresponding to the operation adjustment instruction; wherein the operation mode includes an air supply mode and a temperature control mode; The operation of the air flow conveying device is controlled according to the operation mode of the air flow conveying device.

7. The control method according to claim 6, characterized in that: The air supply mode includes a large air volume mode, a long-distance air supply mode, a bass control mode and a normal control mode; and the operation of the air flow conveying device is controlled according to the operation mode of the air flow conveying device, including: If the air supply mode is a high air volume mode, starting the first fan and the second fan of the two air supply components and opening the upper air inlet and the lower air inlet; If the air supply mode is the long-distance air supply mode and the temperature control mode is the cooling mode, the first fan and the second fan of the two air supply components are started, the lower air inlet is opened, and the upper air inlet is closed; if the air supply mode is the long-distance air supply mode and the heating mode, the first fan and the second fan of the two air supply components are started, the upper air inlet is opened, and the lower air inlet is closed; If the air supply mode is the bass control mode and the temperature control mode is the cooling mode, the first fan of the air supply assembly close to the upper grille cavity and the second fan of the other air supply assembly are started, and the upper air inlet and the lower air inlet are opened; if the air supply mode is the bass control mode and the heating mode, the second fan of the air supply assembly close to the upper grille cavity and the first fan of the other air supply assembly are started, and the upper air inlet and the lower air inlet are opened; If the air supply mode is the normal control mode and the temperature control mode is the cooling mode, the first fan of the air supply component close to the upper grille cavity and the second fan of the other air supply component are started, the lower air inlet is opened and the upper air inlet is closed; if the air supply mode is the normal control mode and the heating mode, the second fan of the air supply component close to the upper grille cavity and the first fan of the other air supply component are started, the upper air inlet is opened and the lower air inlet is closed.

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