Airflow conveying device, air conditioner and control method

Abstract

The invention discloses an airflow conveying device, an air conditioner and a control method. The airflow conveying device comprises a shell, and the shell is hollow to form an upper grating cavity and a lower grating cavity which communicate with each other; an upper air inlet and an upper air outlet which are communicated with the upper grating cavity are formed in one end, far away from the lower grating cavity, of the shell; a lower air inlet and a lower air outlet which are communicated with the lower grating cavity are formed in the side surface, close to the bottom of the shell, of the shell; the two air supply assemblies are arranged in an airflow channel between the upper grating cavity and the lower grating cavity; each air supply assembly comprises a first fan and a second fan which is arranged on one side of the air outlet direction of the first fan and is coaxial with the first fan; and the evaporator is arranged between the two air supply assemblies. Compared with airflow conveying devices in part of existing air conditioners, the airflow conveying device has the advantages that the overall air outlet amount is increased, meanwhile, generated noise is the same or smaller, and the effects of uniform temperature distribution and rapid temperature rise / drop are achieved.

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 blows out from the upper air outlet; when heating, cold air enters from the top and hot air blows 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 upper and lower air outlet areas 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 prior art solutions, an embodiment of the present invention provides 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, the airflow conveying device comprising:

[0007] A shell, wherein the shell is hollow to form 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 shell 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 the side surface close to the bottom of the shell;

[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 comprises a first fan and a second fan which is arranged on one side of the air outlet direction of the first fan and is 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, 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, and the control method includes:

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

[0013] Determine the operation mode of the airflow 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 airflow conveying device is controlled according to the operation mode of the airflow conveying device.

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

[0016] External 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. Subsequently, the air is heat exchanged through the evaporator to discharge the heated or cooled air 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, thereby achieving the effect of uniform temperature distribution and rapid temperature rise / drop.

[0017] Different operation adjustment instructions are sent to the control module through the user end. When the operation mode of the airflow 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 airflow conveying device is finally controlled according to the determined operation mode of the airflow conveying device. Through the control method of the airflow conveying device in the air conditioner in the above embodiment of the present invention, a variety of air supply modes can be realized to meet 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 accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying 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 2Schematic diagram of airflow in the heating mode of the airflow conveying device according to an embodiment of the present invention.

[0021] Figure 3 Schematic diagram of airflow flow of the airflow conveying device in cooling mode according to an embodiment of the present invention.

[0022] Figure 4 It is a structural diagram of a first fan of an airflow 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 of an embodiment of the present invention.

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

[0026] Figure 8 It is a flow field diagram of the wind duct of the simulated airflow of the airflow conveying device in the bass control mode according to the embodiment of the present invention.

[0027] Numbers in the figure

[0028] 1. Shell; 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 be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

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

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

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

[0036] The specific structure of an air flow conveying device provided by an embodiment of the present invention is described in detail below. Figure 1-5 As shown in FIG. 1 , the specific structure of the airflow 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 inside 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 surface close to 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, 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 passages for air flow and are responsible for distributing the treated air to various areas of the room. They can also collect return air in the room to form an air circulation flow.

[0042] In a further embodiment, baffles and driving 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 driving 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 includes a first fan 21 and a second fan 22 which is arranged at one side of the air outlet direction of the first fan 21 and is coaxially arranged with the first fan 21 .

[0048] Specifically, the first fans 21 of the two air supply components 2 are respectively close to the air flow channels of the upper grille cavity 11 and the lower grille cavity 12, and the second fans 22 of the two air supply components 2 are relatively arranged and respectively arranged in the air outlet direction of each first fan 21. Therefore, when each air supply component 2 is in operation, the first fan 21 is first used to blow the air in one of the grille cavities toward the direction of the second fan 22, and then the second fan 22 is used to finally blow the air into the other grille cavity. This arrangement can reduce the difference in air volume between the upper and lower air outlet modes.

[0049] It should be noted that the second fan 22 of each air supply component 2 in the embodiment of the present invention is a hollow axial flow fan. Therefore, when the first fan 21 blows air toward the second fan 22, the flow resistance of the air duct can be reduced. Compared with the air conditioner using the air flow conveying device of the embodiment of the present invention and the existing reversible air supply air conditioner, the air conditioner using the air flow conveying device of the embodiment of the present invention can provide a larger air volume while generating the same noise.

[0050] according to Figure 1-3 As shown, the evaporator 3 is arranged between the two air supply components 2. Specifically, an evaporation chamber for accommodating the evaporator 3 is also formed in the shell 1, and the evaporation chamber is arranged between the upper grille chamber 11 and the lower grille chamber 12, so that the evaporator 3 of the embodiment of the present invention is arranged between the second fans 22 of the two air supply components 2.

[0051] Specifically, before the second fan 22 of each air supply assembly 2 blows the air into the upper grille cavity 11 or the lower grille cavity 12, the air needs to be blown into the evaporator 3, and the air is heat exchanged through the evaporator 3 so that the air is cooled or heated, and then discharged into the room, thereby achieving indoor temperature control.

[0052] For example, when cooling is required, the air in the lower grille cavity 12 is blown to the evaporator 3 by the second fan 22, and the outdoor air is cooled by the cooling pipeline of the evaporator 3, so that it loses heat, thereby reducing the temperature, and the cold air after heat exchange is discharged into the room, thereby cooling the room. On the contrary, when heating is required, the air in the upper grille cavity 11 is blown to the evaporator 3 by another second fan 22, and the heat stored in the refrigerant is released by the evaporator 3 to heat the air. More specifically, the heat in the low-temperature air in the room is absorbed by the evaporator 3, so that the refrigerant therein evaporates into low-pressure steam, and the low-pressure steam is compressed by the compressor to increase its temperature and pressure. Subsequently, the high-temperature and high-pressure steam passes through the condenser and releases heat to the indoor environment, so that the temperature of the indoor air increases, which has a heating effect on the room. It should be noted that the refrigerant in the condenser is condensed into a liquid, and then the pressure is reduced by the expansion valve, and it re-enters the evaporator 3 to complete a cycle.

[0053] It is understandable that the evaporator 3 of the embodiment of the present invention is in a cone shape or its half cross section is in a V shape, and thus the evaporator 3 can increase the heat exchange area and improve the heat exchange efficiency. During the heat exchange process of the evaporator 3, the evaporator 3 with this shape can increase the heat exchange area, that is, increase the contact area between the air and the evaporator 3, thereby accelerating the heat transfer speed, and at the same time, it can also achieve a uniform distribution of the air flow speed when blowing to the surface of the evaporator 3, thereby improving the heat exchange efficiency.

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

[0055] Specifically, the mounting seat 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 a high speed, thereby generating an airflow, so that the air can be blown into the evaporator 3 for heat exchange.

[0056] Since the air flow delivery direction is achieved by adjusting the rotation direction of the output shaft of the driving component, for example, when the blade structure 211 of each fan of the air supply component 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 component 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 of the embodiment of the present invention is a motor.

[0058] according to Figure 4 As shown, specifically, each wind blade structure 211 of the embodiment of the present invention includes an impeller 2111 and a plurality of wind blades 2112. Specifically, the impeller 2111 is arranged on the output shaft of the driving assembly, and the output shaft drives the impeller 2111 to rotate at a high speed along its circumference, so that when each wind blade 2112 moves along the rotation direction of the impeller 2111, an airflow for pushing air is generated. Since each wind blade 2112 is evenly arranged along the circumference of the impeller 2111, when each wind blade 2112 moves along the rotation direction of the impeller 2111, it can ensure that the generated airflow is uniform, and vibration and noise can also be reduced.

[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 arrangement enables the wind blade structure 211 to more effectively convert kinetic energy 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 configuration 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 is 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 vortices 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 vortices 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 airflow 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 in 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 air supply efficiency.

[0067] It should be noted that the outer diameter of each wind blade 2112 of the wind blade structure 211 of the second fan 22 is 50%-70% of the outer diameter of each wind blade 2112 of the wind blade structure 211 of the first fan 21. Taking 50% as an example, if the outer diameter of each wind blade 2112 of the wind blade structure 211 of the first fan 21 is 308 mm, correspondingly, the outer diameter of each wind blade 2112 of the wind 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 disposed on the impeller 2111, and an airflow cavity for airflow circulation is formed between the connecting ring 221 and the impeller 2111; the roots of the multiple wind blades 2112 of the fan blade structure 211 of the second fan 22 are all disposed on the outer side of the connecting ring 221.

[0069] Specifically, before the heated or cooled air is blown to 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 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, when the first fan 21 is blowing air, the air can be smoothly blown to the upper grille cavity 11 or the lower grille cavity 12 through the air flow cavity, thereby reducing the resistance caused by the second fan 22 when the air flows.

[0070] It can be understood that the airflow cavity in 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 arranged 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 violently or deforming when it rotates 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, so as to enhance the structural strength of the connecting ring 221 and ensure that the connecting ring 221 will not be deformed or damaged when the fan is running. At the same time, under the supporting action 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, 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 an air flow conveying device in any of the above-mentioned 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 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, 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 specific steps of a control method provided by an embodiment of the present invention are described in detail below, which include:

[0076] Step S110, receiving an operation adjustment instruction sent from a user end.

[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 understandable 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 operation adjustment instructions. The control module can process the received operation adjustment instructions accordingly through a built-in program or algorithm.

[0079] Step S120, determining the operation mode of the airflow 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 received operation adjustment instruction is parsed by the control module, and 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 airflow 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 instructions 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 large 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 a 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 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, during 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 after being cooled, it is quickly sent out from the upper air outlet 112; 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 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 outdoor cold air is sucked in through the upper air inlet 111. Due to the rising characteristic of hot air and 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 balanced, thereby increasing 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, during cooling, the upper air inlet 111 and the lower air inlet 121 are opened to ensure sufficient air circulation. At the same time, by turning on the first fan 21 of the air supply component 2 facing the upper grille cavity 11 and the second fan 22 of the other air supply component 2 (the fans of the two air supply components 2 have a higher air supply efficiency), cold air can be quickly blown into the room, thereby achieving a rapid cooling effect. The first fan 21 and the second fan 22 of the other two air supply components 2 are turned off, thereby reducing the turbulence and disturbance of the air, thereby reducing the mechanical noise caused by vibration and friction, and thus the generated noise value is lower; conversely, during heating, similar to the cooling mode, the upper air inlet 111 and the lower air inlet 121 are opened, and at the same time, the second fan 22 of the air supply component 2 close to the upper grille cavity 11 and the first fan 21 of the other air supply component 2 are started to blow the hot air downward to ensure that the indoor temperature is evenly distributed; similarly, by turning off the first fan 21 and the second fan 22 of the other two air supply components 2, the turbulence and disturbance of the air are reduced, thereby reducing the 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 normal 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, the lower air inlet 121 is opened and the upper air inlet 111 is closed; if the air supply mode is the normal 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, the upper air inlet 111 is opened and the lower air inlet 121 is closed.

[0091] Specifically, during cooling, only the first fan 21 of the air supply assembly 2 close to the upper grille cavity 11 and the second fan 22 of the other air supply assembly 2 are started, so that air is blown from the lower grille cavity 12 to the upper grille cavity 11, and at the same time, the lower air inlet 121 is opened and the upper air inlet 111 is closed, so that cold air can be stably discharged into the room; conversely, during heating, only the second fan 22 of the air supply assembly 2 close to the upper grille cavity 11 and the first fan 21 of the other air supply assembly 2 are started, so that air is blown from the upper grille cavity 11 to the lower grille cavity 12, and at the same time, the upper air inlet 111 is opened and the lower air inlet 121 is closed, so that hot air can be stably discharged into the room. In the conventional control mode, the air flow conveying device in the air conditioner improves the balance of noise, air volume and air supply distance during cooling or heating by reasonably controlling each air supply assembly 2 and each air inlet and outlet, and is suitable for most family use environments and provides a 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 speed value of the first fan 21 and the second fan 22 of each air supply component 2 is set to 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] From the statistical table of the above simulation results, it can be seen that the air volume of the upper air outlet in each operation mode is larger than that of the lower air outlet, and the air volume of the lower air outlet is about 90% of the air volume of the upper air outlet. It can be seen that the difference in air volume between the two is small. When the number of air outlets is reduced, although the air volume will be partially attenuated, the air outlet speed is increased to extend the air supply 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 airflow 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 airflow conveying device is finally controlled according to the determined operation mode of the airflow conveying device. Through the control method of the airflow conveying device in the air conditioner in the above embodiment of the present invention, a variety of air supply modes can be realized to meet the different experience needs of users.

[0099] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. An air flow conveying device, characterized in that: The air flow conveying device comprises: A shell, wherein the shell is hollow to form 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 shell 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 the side surface close to the bottom of the shell; 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 comprises a first fan and a second fan which is arranged on one side of the air outlet direction of the first fan and is coaxially arranged with the first fan; An evaporator is arranged between the two air supply components.

2. The air flow conveying device according to claim 1, characterized in that: The first fan and the second fan each include a mounting seat, a driving assembly and a fan blade structure; the driving assembly is disposed on the mounting seat, and the fan blade structure is disposed on an output shaft of the driving assembly; Each of the wind blade structures comprises an impeller and a plurality of wind blades, and each of the wind blades is evenly arranged along the circumference of the impeller.

3. The air flow conveying device according to claim 2, 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°.

4. The air flow conveying device according to claim 2, characterized in that: The number of the wind blades is an odd number not less than 3.

5. The air flow conveying device according to any one of claims 2 to 4, characterized in that: The fan 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 blade roots of the multiple blades of the blade structure of the second fan are all arranged on the outside of the connecting ring.

6. The air flow conveying device according to claim 5, characterized in that: The ratio between the radius of the connecting ring and the outer diameter of the wind blades in the second fan.

7. The air flow conveying device according to claim 6, characterized in that: A plurality of ribs are arranged along the inner circumference of the connecting ring, and one side of each of the ribs is connected to the impeller for supporting the connecting ring.

8. An air conditioner, characterized in that: The air conditioner comprises a control module and an air flow conveying device according to any one of claims 1 to 7, wherein the control module is controllably connected to each air supply component in the air flow conveying device.

9. A control method, the control method being applied to the control module of the air conditioner according to claim 8, characterized in that: The control method comprises: Receiving operation adjustment instructions sent from the user end; Determine the operation mode of the airflow 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 airflow conveying device is controlled according to the operation mode of the airflow conveying device.

10. The control method according to claim 9, 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 conventional control mode; 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 component close to the upper grille cavity and the second fan of the other air supply component 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 component close to the upper grille cavity and the first fan of the other air supply component 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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