Air conditioner and control method thereof

Abstract

The invention provides an air conditioner and a control method thereof, the air conditioner comprises an outdoor unit and a grating assembly, the outdoor unit comprises an outdoor unit main body, and the outdoor unit main body is provided with an air outlet; the grille assembly comprises a driving assembly, a plurality of grille bodies and a plurality of blades, the multiple grille bodies and the multiple blades are all connected with the driving assembly, the multiple grille bodies are arranged in the circumferential direction of the air outlet at intervals and rotationally connected with the outdoor unit body, and the multiple blades correspond to the multiple grille bodies correspondingly and rotationally connected with the grille bodies; wherein the driving assembly is started to turn over the multiple grille bodies and / or rotate the multiple blades, and therefore the opening and closing degree of the air outlet is adjusted. The air outlet amount of the air outlet is adjusted by turning over the multiple grille bodies and / or rotating the multiple blades; in the low-temperature refrigeration state, the grille bodies are turned over, the blades are rotated, the size of the air outlet is reduced, then the air outlet amount is reduced, and therefore the heat dissipation effect on the condenser is reduced, the temperature of the evaporator is increased, and the evaporator is prevented from being frozen.

Description

Technical Field

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

[0002] Split air conditioners are currently widely used in various scenarios due to their flexibility and high efficiency. The grille is an important component that assists the condenser and axial flow blades to achieve heat exchange between the inside of the outdoor unit and the external environment, and its structure has a significant impact on the operating efficiency of the air conditioner. The conventional grille is a fixed grid-shaped or strip-shaped rib structure, and the wind generated by the axial flow blades flows out through the gaps between the ribs. For server rooms, due to the high heat generated by the equipment, air conditioning is required to cool down to ensure the normal operation of the room and the reliability of the equipment, even in the cold winter. When the air conditioner is in cooling mode, if the outdoor ambient temperature is very low, the heat exchange effect of the outdoor condenser will be very strong, resulting in overcooling of the refrigerant. The temperature of the refrigerant entering the evaporator may be below 0°C, which makes the evaporator easy to freeze and affects the reliability of the air conditioner. Summary of the invention

[0003] The embodiments of the present invention provide an air conditioner and a control method thereof, so as to reduce the heat exchange capacity of a condenser and thereby increase the temperature of an evaporator, thereby preventing the evaporator from freezing and affecting the reliability of the air conditioner.

[0004] The present invention provides an air conditioner, comprising:

[0005] The external unit comprises an external unit body, wherein the external unit body is provided with an air outlet;

[0006] A grille assembly, comprising a driving assembly and a plurality of grille bodies and a plurality of blades, wherein the plurality of grille bodies and the plurality of blades are both connected to the driving assembly, the plurality of grille bodies are arranged at intervals along the circumference of the air outlet and are rotatably connected to the external unit body, and the plurality of blades are arranged corresponding to the plurality of grille bodies and are rotatably connected to the grille bodies;

[0007] The driving assembly is started to flip the multiple grille bodies and / or rotate the multiple blades, thereby adjusting the opening and closing size of the air outlet.

[0008] In the air conditioner provided by the present invention, a receiving groove is provided inside the grille body which runs through both sides thereof, and the blade is located in the receiving groove; wherein, when the driving assembly is started, one end of the blade passes through the grille body and rotates outside the grille body and in the receiving groove.

[0009] In the air conditioner provided by the present invention, the blades include a first blade and a second blade, the first blade is provided with a first rack, the second blade is provided with a second rack, the grille body is provided with a gear connected to the drive assembly, the gear is located between the first blade and the second blade, and the two sides of the gear are respectively meshed and connected with the first rack and the second rack.

[0010] In the air conditioner provided by the present invention, the driving assembly includes a first motor, a first driving wheel, a first driven wheel and a first rotating shaft, the first motor is connected to the first driving wheel, the first driving wheel is meshingly connected to the first driven wheel, and the first rotating shaft connects the first driven wheel and the gear.

[0011] In the air conditioner provided by the present invention, the driving assembly also includes a second motor, a second driving wheel, a second driven wheel and a second rotating shaft, the second motor is connected to the second driving wheel, the second driving wheel is meshingly connected to the second driven wheel, and the two ends of the second rotating shaft are respectively connected to the second driven wheel and the grille body.

[0012] In the air conditioner provided by the present invention, the second rotating shaft is provided with channels running through both ends thereof, the channels are communicated with the accommodating groove, and one end of the first rotating shaft passes through the channel and the accommodating groove to be rotatably connected to the external unit body.

[0013] In the air conditioner provided by the present invention, the driving assembly also includes a motor box, which is fixed at the center of the air outlet, one end of the grille body is arranged close to the motor box, and the other end is extended toward the edge of the air outlet along the radial direction of the air outlet.

[0014] The present invention further provides a control method for an air conditioner, which is applied to any of the air conditioners described above, and comprises:

[0015] Receive the power-on command and determine whether to turn on the cooling mode;

[0016] If the cooling mode is turned on, the outdoor temperature is obtained, and the difference between the outdoor temperature and the preset temperature is determined;

[0017] The rotation angle of the grille body and / or the blades is controlled according to the judgment result.

[0018] The preset temperature of the present invention includes a first preset temperature and a second preset temperature, and the first preset temperature is greater than the second preset temperature. The step of controlling the rotation angle of the grille body and / or the blade according to the judgment result includes:

[0019] If the outdoor temperature is greater than the first preset temperature, rotating the grille body to a first preset angle;

[0020] If the outdoor temperature is lower than the first preset temperature and the outdoor temperature is higher than the second preset temperature, rotating the grille body to a second preset angle;

[0021] If the outdoor temperature is lower than the second preset temperature, the grille body is rotated to a second preset angle, and the blades are rotated to a specified angle.

[0022] The designated angle of the present invention includes a first designated angle, a second designated angle and a third designated angle, and the first designated angle is smaller than the second designated angle, and the second designated angle is smaller than the third designated angle. If the outdoor temperature is lower than the second preset temperature, the grille body is rotated to the second preset angle, and the blade is rotated to the designated angle, comprising:

[0023] Acquire the real-time temperature of the evaporator, and determine the magnitude of the real-time temperature and the target temperature, wherein the target temperature includes a first target temperature and a second target temperature, the first target temperature is less than the second preset temperature, and the first target temperature is greater than the second target temperature;

[0024] If the real-time temperature is greater than the first target temperature, rotating the blade to a first specified angle;

[0025] If the outdoor temperature is lower than the first target temperature and the outdoor temperature is higher than the second target temperature, rotating the blade to a second specified angle;

[0026] If the outdoor temperature is lower than the second target temperature, the blade is rotated to a third specified angle. The control method of the air conditioner of the present invention further includes:

[0027] The shutdown information of the air conditioner is received, the grille body is rotated to a second preset angle, and the blades are rotated to a fourth specified angle.

[0028] The present application assembles the grille assembly on the air outlet, and drives the multiple grille bodies to flip and / or the multiple blades to rotate through the driving assembly, thereby adjusting the opening and closing size of the air outlet to control the air output of the air outlet; when in a low-temperature refrigeration state, the multiple grille bodies are flipped and the multiple blades are rotated to reduce the opening size of the air outlet, thereby reducing the air output, thereby reducing the heat dissipation effect on the condenser, increasing the refrigerant temperature, and ultimately increasing the evaporation temperature of the evaporator to avoid freezing of the evaporator. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 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.

[0030] Figure 1 is a structural diagram of an air conditioner in a conventional cooling mode according to an embodiment of the present invention;

[0031] Figure 2 is a structural diagram of an air conditioner in a high temperature cooling mode according to an embodiment of the present invention;

[0032] Figure 3 It is a structural diagram of the air conditioner in the first low-temperature cooling mode according to the embodiment of the present invention;

[0033] Figure 4 It is a structural diagram of the air conditioner in the second low-temperature cooling mode according to an embodiment of the present invention;

[0034] Figure 5 It is a structural diagram of the air conditioner in the third low-temperature cooling mode according to the embodiment of the present invention;

[0035] Figure 6 is a structural diagram of an air conditioner in shutdown mode according to an embodiment of the present invention;

[0036] Figure 7 is a cross-sectional view of a grille assembly according to an embodiment of the present invention;

[0037] Figure 8 is another cross-sectional view of a grille assembly according to an embodiment of the present invention;

[0038] Fig. 9 A cross-sectional view of the grille body and blade assembly in an embodiment of the present invention;

[0039] Fig.10 is a flow chart of a method for controlling an air conditioner in an embodiment of the present invention;

[0040] Fig.11 is a sub-flow chart of a method for controlling an air conditioner in an embodiment of the present invention;

[0041] Fig.12 is a sub-flow chart of a method for controlling an air conditioner in an embodiment of the present invention;

[0042] Fig.13 A schematic diagram of a step flow of a method for controlling an air conditioner according to an embodiment of the present invention;

[0043] The reference numerals in the figures are:

[0044] 1. External unit; 11. External unit body; 111. Air outlet; 2. Grille assembly; 21. Driving assembly; 211. First motor; 212. First driving wheel; 213. First driven wheel; 214. First rotating shaft; 215. Second motor; 216. Second driving wheel; 217. Second driven wheel; 218. Second rotating shaft; 219. Motor box; 2191. Box body; 2192. Box cover; 22. Grille body; 221. Receiving slot; 222. Gear; 23. Blade; 231. First blade; 2311. First rack; 232. Second blade; 2321. Second rack. DETAILED DESCRIPTION

[0045] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Now, in conjunction with the accompanying drawings, the preferred embodiments of the present invention are described in detail.

[0046] Reference Figures 1 to 9 As shown, it shows an embodiment of the air conditioner of the present invention. The air conditioner comprises an external unit 1 and a grille assembly 2, wherein the external unit 1 comprises an external unit body 11, and the external unit body 11 is provided with an air outlet 111; the grille assembly 2 comprises a driving assembly 21 and a plurality of grille bodies 22 and a plurality of blades 23, wherein the plurality of grille bodies 22 and the plurality of blades 23 are both connected to the driving assembly 21, the plurality of grille bodies 22 are arranged at intervals along the circumference of the air outlet 111 and are rotatably connected to the external unit body 11, and the plurality of blades 23 are arranged corresponding to the plurality of grille bodies 22 and are rotatably connected to the grille bodies 22; wherein the driving assembly 21 is started to flip the plurality of grille bodies 22 and / or rotate the plurality of blades 23, thereby adjusting the opening and closing size of the air outlet 111.

[0047] Specifically, as one of the important electrical appliances for regulating temperature, the air conditioner is used in an increasingly wide range of fields and in more and more types. For server rooms, due to the high heat generated by the equipment, air conditioners are needed to cool down the room to ensure the normal operation of the room and the reliability of the equipment, even in the cold winter. When the air conditioner is in cooling mode, if the outdoor ambient temperature is very low, the heat exchange effect of the outdoor condenser will be very strong, resulting in over-cooling of the refrigerant. The temperature of the refrigerant entering the evaporator may be lower than 0°C, which makes the evaporator easy to freeze and affects the reliability of the air conditioner.

[0048] Therefore, this embodiment provides an air conditioner, especially for a split-type air conditioner, the air conditioner includes an outdoor unit 1 and a grille assembly 2, the outdoor unit 1 is arranged outdoors, the outdoor unit 1 includes an outdoor unit body 11, a condenser is arranged inside the outdoor unit body 11 to cool the refrigerant, in order to ensure the operating efficiency of the condenser, the condenser needs to be dissipated, so a fan is arranged inside the outdoor unit body 11, the external cold air is guided to the inside of the outdoor unit body 11 through the rotation of the fan, and the cold air flows through the condenser to dissipate the heat of the condenser; the outdoor unit body 11 is provided with an air outlet 111, so that the air flow inside the outdoor unit body 11 flows to the outside through the air outlet 111, the air outlet 111 is arranged in a circular ring shape, and the air outlet 111 is arranged on the front side of the condenser.

[0049] The grille assembly 2 is mounted on the outer machine body 11 and is located on one side of the air outlet 111. The grille assembly 2 is used to control the opening and closing size of the air outlet 111. The grille assembly 2 includes a driving assembly 21 and a plurality of grille bodies 22 and a plurality of blades 23. The plurality of grille bodies 22 and the plurality of blades 23 can rotate relative to the air outlet 111 to cooperate with each other to open or close the air outlet 111. The plurality of grille bodies 22 and the plurality of blades 23 are both connected to the driving assembly 21. The driving assembly 21 is used to drive the plurality of grille bodies 22 and the plurality of blades 23 to rotate. The plurality of grille bodies 22 are respectively arranged at intervals along the circumference of the air outlet 111, and the plurality of grille bodies 22 are rotatably connected to the outer machine body 11. Therefore, the plurality of grille bodies 22 can block the air outlet 111, and the intervals between the plurality of grille bodies 22 can make the air inside the outer machine body 11 The air outlet 111 is covered by the grille bodies 22 to adjust the opening and closing size of the air outlet 111. The grille bodies 22 are provided with blades 23 to cover the air outlet 111 between the two adjacent grille bodies 22, so as to further control the opening and closing size of the air outlet 111. The blades 23 are used to cover the air outlet 111 between the two adjacent grille bodies 22, so as to further control the opening and closing size of the air outlet 111. The blades 23 are respectively arranged corresponding to the grille bodies 22 and are rotatably connected to the grille bodies 22. The blades 23 rotate along the circumference of the air outlet 111 to cover or open the gap between the two adjacent grille bodies 22, so as to adjust the opening and closing size of the air outlet 111 together with the grille bodies 22.

[0050] More specifically, the grille body 22 and the blades 23 are both fan-shaped structures, so as to better fit the shape of the air outlet 111 and better shield the air outlet 111. In this embodiment, the grille assembly 2 is provided with 6 grille bodies 22 and 12 blades 23, and the central angle of the grille body 22 is 30°.

[0051] More specifically, the driving assembly 21 is fixed at the center of the air outlet 111, one end of the grille body 22 is connected to the driving assembly 21, and the other end is extended along the radial direction of the air outlet 111 toward the edge of the air outlet 111, that is, the multiple grille bodies 22 extend radially toward the edges of the air outlet 111 with the driving assembly 21 as the center, so as to cooperate together to block the air outlet 111, so as to improve the structural stability of the grille assembly 2.

[0052] Among them, in the initial state, that is, when the air conditioner is in the conventional cooling mode, the grille body 22 is arranged parallel to the air outlet 111 to block part of the air outlet 111. At the same time, the blade 23 is arranged corresponding to the grille body 22, that is, the blade 23 overlaps with the grille body 22, and the blade 23 is arranged parallel to the air outlet 111. The blade 23 does not block the air outlet 111. At this time, the grille assembly 2 blocks part of the air outlet 111.

[0053] The grille body 22 can perform a flipping motion relative to the air outlet 111, that is, the grille body 22 is rotated so that the grille body 22 flips inside the air outlet 111; the blades 23 can perform a circumferential rotational motion relative to the air outlet 111 so as to rotate between two adjacent grille bodies 22.

[0054] When the air conditioner is in high-temperature cooling mode, in order to improve the heat dissipation effect on the condenser, the grille body 22 is flipped to 90°. At this time, the grille body 22 is perpendicular to the air outlet 111. At this time, the blades 23 are also arranged perpendicular to the air outlet 111. Therefore, the grille body 22 and the blades 23 do not block the air outlet 111. At this time, the opening range of the air outlet 111 is the largest, that is, the air outlet 111 is in a fully open state. At this time, the air outlet of the external unit body 11 is the largest, thereby improving the heat dissipation efficiency of the airflow to the condenser, and ultimately improving the heat dissipation effect of the condenser.

[0055] When the air conditioner is in the low-temperature cooling mode, in order to reduce the heat dissipation effect on the condenser and increase the temperature of the refrigerant, the grille body 22 is flipped to 180°. At this time, the grille body 22 and the blades 23 are parallel to the air outlet 111, and the grille body 22 blocks part of the air outlet 111. At the same time, the blades 23 are rotated to rotate along the circumference of the air outlet 111, that is, the blades 23 protrude from the grille body 22, and the blades 23 rotate at the interval between two adjacent grille bodies 22, thereby blocking the air outlet 111 on both sides of the grille body 22, so as to further close the air outlet 111, reduce the opening range of the air outlet 111, and thus reduce the air outlet volume of the air outlet 111, so as to reduce the heat dissipation effect of the condenser, thereby increasing the temperature of the condenser, so that the temperature of the refrigerant inside the condenser is high, and then when the refrigerant enters the evaporator of the indoor unit, the temperature of the refrigerant is high, thereby increasing the temperature of the evaporator and preventing the evaporator from freezing.

[0056] When the air conditioner is in the shutdown mode, the grille body 22 can be flipped to be parallel to the air outlet 111, and the blades 23 can be rotated until the multiple grille bodies 22 and the multiple blades 23 are completely closed. At this time, the multiple grille bodies 22 and the multiple blades 23 completely cover the air outlet 111, and the air outlet 111 is in a fully closed state, thereby preventing external dust, rainwater, insects and other impurities or garbage from entering the interior of the external unit body 11 through the air outlet 111 and damaging the internal structural parts of the external unit body 11.

[0057] In the present application, the grille assembly 2 is installed on the air outlet 111, and the driving assembly 21 is used to drive the multiple grille bodies 22 to flip and / or the multiple blades 23 to rotate, thereby adjusting the opening and closing size of the air outlet 111 to control the air outlet volume of the air outlet 111; when in a low-temperature refrigeration state, the multiple grille bodies 22 are flipped and the multiple blades 23 are rotated to reduce the opening size of the air outlet 111, thereby reducing the air outlet volume, thereby reducing the heat dissipation effect on the condenser, increasing the refrigerant temperature, and ultimately increasing the evaporation temperature of the evaporator to avoid icing of the evaporator.

[0058] At the same time, when the air conditioner is in a non-working state, the multiple grille bodies 22 are flipped and the multiple blades 23 are rotated to completely close the air outlet 111, thereby preventing external dust, rainwater, insects, etc. from entering the interior of the external unit body 11 through the air outlet 111, especially preventing insects from entering the electrical box and causing problems such as a short circuit in the main board, thereby preventing the normal operation of the equipment from being affected.

[0059] In one embodiment, referring to Figure 2 , Figure 8 and Fig. 9 As shown, the grille body 22 is provided with a receiving slot 221 passing through both sides thereof, and the blade 23 is located in the receiving slot 221; wherein, when the driving assembly 21 is started, the blade 23 passes through one end of the grille body 22 and rotates on the outside of the grille body 22 and in the receiving slot 221. Specifically, the blade 23 is provided corresponding to the grille body 22 and is rotatably connected to the grille body 22, that is, the blade 23 and the grille body 22 are provided overlappingly. In order to ensure that the blade 23 blocks the air outlet 111 between two adjacent grille bodies 22 without affecting the blocking of the air outlet 111 by the grille body 22, a receiving slot 221 is provided inside the grille body 22. The receiving slot 221 is used to accommodate the blade 23, and the shape of the receiving slot 221 is adapted to the shape of the blade 23. The receiving slot 221 is extended along the height direction of the grille body 22, and the receiving slot 221 is provided to extend along the height direction of the grille body 22. The accommodating groove 221 penetrates the left and right sides of the grille body 22, that is, the accommodating groove 221 penetrates the two sides of the grille body 22 along the width direction of the grille body 22, so that the blade 23 can pass through the left and right sides of the grille body 22 and rotate to the outside of the grille body 22 to block the air outlet 111 between the two adjacent grille bodies 22; the blade 23 is located in the accommodating groove 221, that is, the blade 23 is located inside the grille body 22 and is rotatably connected to the grille body 22, so as to avoid damage to the blade 23, while improving the structural stability of the grille assembly 2 and reducing the occupied space of the grille assembly 2.

[0060] When the driving assembly 21 is started to rotate the blade 23, the blade 23 rotates along the circumference of the air outlet 111, and the blade 23 passes through one end of the grille body 22 and rotates to the outside of the grille body 22, so that the blade 23 rotates between the outside of the grille body 22 and the receiving groove 221; when the opening size of the air outlet 111 is to be reduced, the blade 23 is controlled to rotate toward the outside of the grille body 22 to block the air outlet 111 outside the grille body 22, thereby reducing the opening size of the air outlet 111. The opening range of the air outlet 111 is increased to reduce the air output of the air outlet 111, thereby reducing the heat dissipation effect on the condenser, increasing the temperature of the evaporator, and avoiding icing of the evaporator; when the opening size of the air outlet 111 is to be increased, the blade 23 is controlled to rotate in the direction of the accommodating groove 221 so that the blade 23 is stored in the grille body 22, and the blade 23 does not block the air outlet 111, thereby increasing the opening range of the air outlet 111, so as to increase the air output of the air outlet 111, thereby increasing the heat dissipation effect on the condenser.

[0061] In this embodiment, the blade 23 is accommodated in the accommodating groove 221, thereby increasing the service life of the blade 23 and improving the structural stability of the grille assembly 2. At the same time, the rotation of the blade 23 is stable and does not affect the shielding effect of the grille body 22 on the air outlet 111, so that the grille body 22 and the blade 23 can cooperate to adjust the opening and closing size of the air outlet 111, and have high stability.

[0062] In a specific embodiment, refer to Figures 2 to 9 As shown, the blade 23 includes a first blade 231 and a second blade 232, the first blade 231 is provided with a first rack 2311, the second blade 232 is provided with a second rack 2321, the grille body 22 is provided with a gear 222 connected to the driving assembly 21, the gear 222 is located between the first blade 231 and the second blade 232, and the two sides of the gear 222 are respectively meshed and connected with the first rack 2311 and the second rack 2321. Specifically, the blade 23 includes a first blade 231 and a second blade 232, and the first blade 231 and the second blade 232 are respectively arranged near the two sides of the accommodating groove 221, and the first blade 231 and the second blade 232 both rotate between the accommodating groove 221 and the outer side of the grille body 22. In this embodiment, the first blade 231 and the second blade 232 are relatively arranged, that is, the first blade 231 and the second blade 232 are parallel to each other; in order to drive the first blade 231 and the second blade 232 to rotate, a first rack 2311 is provided on the first blade 231, and a second rack 2321 is provided on the second blade 232. The grille body 22 is also provided with a gear 222, and the gear 222 is connected to the driving assembly 21, and the gear 222 is located between the first blade 231 and the second blade 232, and the two sides of the gear 222 are respectively meshed and connected with the first rack 2311 and the second rack 2321.

[0063] Therefore, when the driving assembly 21 is started, the gear 222 is driven to rotate, thereby driving the first rack 2311 and the second rack 2321 to slide, and then the first blade 231 and the second blade 232 are rotated in opposite directions. When the first blade 231 and the second blade 232 rotate toward the outside of the grille body 22, the first blade 231 and the second blade 232 respectively pass through the two ends of the grille body 22 and move toward the two sides of the grille body 22, so that the first blade 231 and the second blade 232 respectively block the air outlet 111 on both sides of the grille body 22 to increase the blocking range of the blade 23, and only one gear 222 can drive the first blade 231 and the second blade 232 to move simultaneously, thereby saving energy, reducing costs, and improving the structural stability of the grille assembly 2.

[0064] In one embodiment, referring to Figures 7 and 8 As shown, the driving assembly 21 includes a first motor 211, a first driving wheel 212, a first driven wheel 213 and a first rotating shaft 214, the first motor 211 is connected to the first driving wheel 212, the first driving wheel 212 is meshedly connected to the first driven wheel 213, and the first rotating shaft 214 connects the first driven wheel 213 and the gear 222. Specifically, the driving component 21 is connected to the gear 222, thereby driving the gear 222 to drive the first blade 231 and the second blade 232 to rotate. The driving component 21 includes a first motor 211, a first driving wheel 212, a first driven wheel 213 and a first rotating shaft 214. The first motor 211 is used to drive the first driving wheel 212 to rotate. The first motor 211 is connected to the first driving wheel 212, one end of the first driving wheel 212 is meshed and connected with the first driven wheel 213, and the first driven wheel 213 is connected to one end of the first rotating shaft 214, and the first rotating shaft 214 is extended in the direction of the gear 222, and the gear 222 is connected to the first rotating shaft 214.

[0065] Therefore, when the first motor 211 is started, the first driving wheel 212 rotates, and the first driving wheel 212 drives the first driven wheel 213 to rotate, thereby driving the first rotating shaft 214 to rotate, and the first rotating shaft 214 rotates to drive the gear 222 to rotate, and the gear 222 drives the first rack 2311 and the second rack 2321 to move, thereby making the first blade 231 and the second blade 232 rotate along the circumference of the air outlet 111, thereby controlling the first blade 231 and the second blade 232 to adjust the opening and closing size of the air outlet 111.

[0066] In this embodiment, the gear 222 is driven to rotate by the first motor 211, the first driving wheel 212, the first driven wheel 213 and the first rotating shaft 214, thereby driving the first blade 231 and the second blade 232 to rotate in the accommodating groove 221 and outside the grille body 22, thereby adjusting the opening and closing size of the air outlet 111. The grille assembly 2 has a simple structure, and the method of driving the first blade 231 and the second blade 232 is simple and stable, so that the first blade 231 and the second blade 232 can rotate stably.

[0067] In a specific embodiment, refer to Figures 7 and 8 As shown, the driving assembly 21 further includes a second motor 215, a second driving wheel 216, a second driven wheel 217 and a second rotating shaft 218, wherein the second motor 215 is connected to the second driving wheel 216, the second driving wheel 216 is meshedly connected to the second driven wheel 217, and the two ends of the second rotating shaft 218 are respectively connected to the second driven wheel 217 and the grille body 22. Specifically, the driving assembly 21 is also connected to the grille body 22 to drive the grille body 22 to rotate in the air outlet 111, and the driving assembly 21 further includes a second motor 215, a second driving wheel 216, a second driven wheel 217 and a second rotating shaft 218, wherein the second motor 215 is used to drive the second driving wheel 216 to rotate, the second motor 215 is connected to the second driving wheel 216, and the second driving wheel 216 is meshedly connected to the second driven wheel 217, one end of the second driven wheel 217 is connected to one end of the second rotating shaft 218, and the other end of the second rotating shaft 218 is fixedly connected to the grille body 22.

[0068] Therefore, when the second motor 215 is started, the second driving wheel 216 rotates, the second driving wheel 216 drives the second driven wheel 217 to rotate, and then drives the second rotating shaft 218 to rotate, the grille body 22 rotates following the second rotating shaft 218, and the grille body 22 performs a flipping motion in the air outlet 111. By adjusting the rotation angle of the grille body 22, the shielding range of the air outlet 111 by the grille body 22 is adjusted, so as to adjust the opening and closing size of the air outlet 111, thereby controlling the air outlet volume of the air outlet 111, and finally adjusting the heat dissipation effect on the condenser.

[0069] In this embodiment, the grille body 22 is driven to rotate by the second motor 215, the second driving wheel 216, the second driven wheel 217 and the second rotating shaft 218, so as to adjust the opening and closing size of the air outlet 111. The structure of the grille assembly 2 is simple, and the method of driving the grille body 22 is simple and stable, so that the grille body 22 can rotate stably.

[0070] In one embodiment, referring to Figures 7 and 8 As shown, the second rotating shaft 218 is provided with a channel passing through its two ends, and the channel is communicated with the receiving groove 221, and one end of the first rotating shaft 214 passes through the channel and the receiving groove 221 and is rotatably connected to the external machine body 11. Specifically, the second rotating shaft 218 connects the second driven wheel 217 and the grille body 22, and the middle part of the second rotating shaft 218 is provided with a channel passing through its two ends, that is, the second rotating shaft 218 is a hollow structure, and the channel is communicated with the receiving groove 221, and one end of the first rotating shaft 214 passes through the channel and the receiving groove 221 to extend to the edge of the air outlet 111 and is rotatably connected to the external machine body 11, so that one end of the first rotating shaft 214 is located on the side of the second rotating shaft 218 close to the grille body 22, and the other end of the first rotating shaft 214 is located on the other side of the second rotating shaft 218 and is connected to the first driven wheel 213, so that the first rotating shaft 214 can be located in the accommodating groove 221, and then connected to the gear 222 in the accommodating groove 221, so as to drive the gear 222 to rotate, and then drive the first blade 231 and the second blade 232 to rotate in the accommodating groove 221, and the first driven wheel 213 and the gear 222 are supported on the external machine body 11 through the first rotating shaft 214, so as to improve the assembly stability of the first driven wheel 213 and the gear 222; at the same time, the first rotating shaft 214 is located inside the second rotating shaft 218 and the grille body 22 to save the space occupied by the grille assembly 2, and at the same time protect the first rotating shaft 214 and improve the service life of the first rotating shaft 214.

[0071] More specifically, the inner diameter of the second rotating shaft 218 is greater than the diameter of the first rotating shaft 214 , thereby ensuring that the rotation of the first rotating shaft 214 and the second rotating shaft 218 do not interfere with each other, and ensuring the normal rotation of the blades 23 and the grille body 22 .

[0072] In a specific embodiment, refer to Figures 1 to 8As shown, the driving assembly 21 also includes a motor box 219, which is fixed at the center of the air outlet 111. One end of the grille body 22 is arranged close to the motor box 219, and the other end is extended toward the edge of the air outlet 111 along the radial direction of the air outlet 111. Specifically, the drive assembly 21 is fixed at the center of the air outlet 111, and the drive assembly 21 also includes a motor box 219. The interior of the motor box 219 forms a closed space. The motor box 219 is used to install other structural parts of the drive assembly 21, that is, the first motor 211, the second motor 215, the first driving wheel 212, the second driving wheel 216, the first driven wheel 213, the second driven wheel 217 and one end of the first rotating shaft 214, and one end of the second rotating shaft 218 are all assembled in the motor box 219, so that the motor box 219 protects these structural parts, ensuring that the first motor 211, the second motor 215, the first driving wheel 212, the second driving wheel 216, the first driven wheel 213, the second driven wheel 217 and the first rotating shaft 214, The normal operation of the second rotating shaft 218 and the improved service life of the driving assembly 21; at the same time, the motor box 219 is fixed at the center of the air outlet 111, one end of the grille body 22 is connected to the second rotating shaft 218 close to the motor box 219, and the other end of the grille body 22 is extended along the radial direction of the air outlet 111 toward the edge of the air outlet 111, and the multiple grille bodies 22 are arranged at intervals along the circumference of the air outlet 111, so that the multiple grille bodies 22 can effectively block the air outlet 111 and ensure the adjustment of the opening and closing size of the air outlet 111, that is, the motor box 219 and the multiple grille bodies 22 are arranged in the air outlet 111 as a whole in a radial structure, so as to control the opening and closing size of the air outlet 111 by controlling the rotation angle of the grille body 22 and the blades 23.

[0073] More specifically, the motor box 219 includes a box body 2191 and a box cover 2192, the first motor 211 is fixed at the bottom of the box body 2191, the second motor 215 is fixed at the side of the box cover 2192 facing the box body 2191, and the first driving wheel 212, the second driving wheel 216, the first driven wheel 213, the second driven wheel 217 and the first rotating shaft 214, the second rotating shaft 218 are fixed between the first motor 211 and the second motor 215, one end of the first rotating shaft 214 passes through the box body 2191 and extends to the edge of the air outlet 111 and is rotatably connected to the external machine body 11, and one end of the second rotating shaft 218 passes through the box body 2191 and extends to be fixedly connected to one end of the grille body 22. Therefore, the structure of the driving assembly 21 is stable and the installation is simple. In this embodiment, the first motor 211 and the second motor 215 are fixed by screws.

[0074] The embodiment of the present invention also provides a method for controlling an air conditioner. Fig.13 is a schematic flow chart of the steps of the air conditioner control method, Fig.10 is a flow chart of the control method of the air conditioner, wherein the steps of the control method of the air conditioner include S110-S130:

[0075] S110, receiving a power-on instruction and determining whether to turn on the cooling mode;

[0076] Specifically, the user sends a power-on command, and after the controller receives the power-on command, it determines the operating mode of the air conditioner according to the power-on command, that is, determines whether the air conditioner is in cooling mode. If the cooling mode is on, proceed to the next step; if the cooling mode is not on, directly enter the operating mode corresponding to the power-on command, including but not limited to heating mode, dehumidification mode, etc.

[0077] S120, if the cooling mode is turned on, obtaining the outdoor temperature, and determining the difference between the outdoor temperature and the preset temperature;

[0078] Specifically, if the air conditioner is turned on in cooling mode, it is necessary to adjust the position of the grille body 22 and the blades 23 according to the outdoor temperature, and then adjust the opening and closing size of the air outlet 111; therefore, the controller needs to obtain the outdoor temperature, which is detected by the temperature sensor, and the outdoor temperature refers to the outdoor ambient temperature where the outdoor unit 1 is located; the preset temperature refers to the temperature manually set in the controller in advance; the controller judges the size of the outdoor temperature and the preset temperature based on the outdoor temperature and the preset temperature, and thus controls the position of the grille body 22 and the blades 23 based on the judgment result of the outdoor temperature and the preset temperature, so as to control the opening and closing size of the air outlet 111, and then control the air output of the air outlet 111, so as to adjust the heat dissipation effect on the condenser.

[0079] S130, controlling the rotation angle of the grille body 22 and / or the blades 23 according to the judgment result;

[0080] Specifically, the judgment result refers to the judgment result of comparing the outdoor temperature with the preset temperature in the previous step; the rotation angle refers to the preset rotation angle of the grille body 22 and the blade 23, and the staff presets different rotation angles of the grille body 22 and the blade 23 according to the environment in which the air conditioner is located; therefore, the controller controls the grille body 22 to rotate a certain angle, or controls the blade 23 to rotate a certain angle, or controls the grille body 22 and the blade 23 to rotate a certain angle at the same time according to the judgment result, so as to adjust the opening and closing size of the air outlet 111 by adjusting the rotation angle of the grille body 22 and / or the blade 23, thereby controlling the air outlet 111 to control the air volume of the air outlet 111, so as to realize the air conditioner adjusting the opening and closing size of the air outlet 111 of the outdoor unit 1 according to the outdoor temperature, so that the air conditioner can adapt to various environmental conditions and improve the reliability and practicality of the air conditioner.

[0081] In one embodiment, if Fig.11 As shown, the preset temperature includes a first preset temperature and a second preset temperature, and the first preset temperature is greater than the second preset temperature, and step S130 also includes S131-S133.

[0082] S131, if the outdoor temperature is greater than the first preset temperature, rotating the grille body 22 to a first preset angle;

[0083] S132, if the outdoor temperature is lower than the first preset temperature and the outdoor temperature is higher than the second preset temperature, rotating the grille body 22 to a second preset angle;

[0084] S133, if the outdoor temperature is lower than the second preset temperature, rotating the grille body 22 to a second preset angle, and rotating the blades 23 to a specified angle;

[0085] Specifically, the cooling modes of the air conditioner include a conventional cooling mode, a high-temperature cooling mode and a low-temperature cooling mode; in the conventional cooling mode, the air conditioner outdoor unit 1 is at a normal temperature, the air conditioner operates normally, and the air outlet 111 maintains a stable air volume; in the high-temperature cooling mode, since the air conditioner outdoor unit 1 is in a high-temperature environment, in order to ensure the normal operation of the air conditioner, it is necessary to increase the air volume of the air outlet 111 to improve the heat dissipation effect on the condenser; in the low-temperature cooling mode, since the air conditioner outdoor unit 1 is in a low-temperature environment, the heat exchange effect of the outdoor condenser will be very strong, resulting in excessive cooling of the refrigerant, and the temperature of the refrigerant entering the evaporator may be lower than 0°C, which makes the evaporator easy to freeze and affects the reliability of the air conditioner. Therefore, in order to avoid freezing of the evaporator and improve the reliability of the air conditioner, the air outlet 111 is reduced to reduce the heat dissipation effect on the condenser, thereby increasing the temperature of the refrigerant, and then increasing the temperature of the evaporator to avoid freezing of the evaporator.

[0086] The preset temperature includes a first preset temperature and a second preset temperature, the first preset temperature is greater than the second preset temperature. In this embodiment, the first preset temperature is set to 43°C and the second preset temperature is set to 20°C. The staff can set the first preset temperature and the second preset temperature according to actual conditions, and there is no limitation here.

[0087] The controller controls the rotation angle of the grille body 22 and / or the blades 23 according to the outdoor temperature T and the first preset temperature and the second preset temperature.

[0088] When the outdoor temperature is greater than the first preset temperature, that is, T>43°C, it indicates that the air conditioner outdoor unit 1 is in a high temperature environment at this time, and the heat dissipation effect of the condenser needs to be improved, that is, the air volume of the air outlet 111 needs to be increased, and the high temperature cooling mode is entered at this time; therefore, the controller controls the grille body 22 to rotate, and rotates to a first preset angle, the first preset angle refers to the pre-set rotation angle of the grille body 22, in this embodiment, the first preset angle is set to 90°, and the blades 23 are kept stationary; in the initial state, the grille body 22 is parallel to the air outlet 111, so as to better shield the air outlet 111, and at high In the warm cooling mode, the grille body 22 is controlled to rotate to 90°, and the grille body 22 is rotated to a state perpendicular to the air outlet 111. At this time, the air outlet 111 is in a fully open state, so that the grille body 22 does not block the air outlet 111, so as to increase the opening range of the air outlet 111 and increase the air outlet volume of the air outlet 111. At this time, the opening of the air outlet 111 reaches the maximum, that is, the air outlet volume of the air outlet 111 is the largest. At the same time, the fan of the outdoor unit 1 is operated at the highest wind speed to maximize the air outlet volume of the outdoor unit 1, thereby improving the heat dissipation effect of the condenser and ensuring the normal operation of the air conditioner in a high temperature environment.

[0089] When the outdoor temperature is less than the first preset temperature and greater than the second preset temperature, that is, 20°C ≤ T ≤ 43°C, it indicates that the air conditioner outdoor unit 1 is in a normal temperature environment, and the normal cooling mode of the air conditioner is maintained at this time; therefore, the controller controls the grille body 22 to rotate to a second preset angle, which is a pre-set angle. In this embodiment, the second preset angle is set to 0° or 180°, while keeping the blade 23 stationary; in the initial state, the grille body 22 is parallel to the air outlet 111. state, thereby better shielding the air outlet 111. In the conventional cooling mode, the grille body 22 is controlled to rotate to 0° or 180°, and the grille body 22 is rotated to a state parallel to the air outlet 111. In this embodiment, the grille body 22 is rotated to the position in the initial state, so that the grille body 22 partially shields the air outlet 111 to maintain the normal opening range of the air outlet 111 and maintain the normal air volume of the air outlet 111. At the same time, the fan of the outdoor unit 1 is operated at a high wind speed to ensure the normal operation of the air conditioner.

[0090] When the outdoor temperature is lower than the second preset temperature, that is, T<20℃, it indicates that the air conditioner outdoor unit 1 is in a low temperature environment, and the evaporator is prone to ice formation, and the air conditioner enters the low temperature cooling mode; therefore, the controller controls the grille body 22 to rotate to the second preset angle, and controls the blade 23 to rotate to the specified angle at the same time; that is, at this time, the grille body 22 rotates to a state parallel to the air outlet 111, so that the grille body 22 blocks part of the air outlet 111; at the same time, the blade 23 is rotated again to make the blade 23 rotate to the specified angle, and the specified angle is the preset rotation angle of the blade 23, that is, the blade 23 rotates to the outside of the grille body 22 to further block the air outlet 111, thereby reducing the opening range of the air outlet 111, and then reducing the air outlet of the air outlet 111, so as to reduce the heat dissipation effect on the condenser, thereby increasing the refrigerant temperature, and then increasing the temperature of the evaporator, so as to avoid ice formation on the evaporator and improve the reliability of the air conditioner.

[0091] In this embodiment, the first preset temperature and the second preset temperature are introduced as a basis for judgment, so that the operating state of the air conditioner can be adjusted more finely to adapt to different environmental conditions, ensure the normal operation of the air conditioner, and reduce energy consumption.

[0092] In one embodiment, if Fig.12 As shown, the specified angles include a first specified angle, a second specified angle and a third specified angle, and the first specified angle is smaller than the second specified angle, and the second specified angle is smaller than the third specified angle, and step S133 also includes S1331-S1334.

[0093] S1331, obtaining a real-time temperature of the evaporator, and determining a difference between the real-time temperature and a target temperature, wherein the target temperature includes a first target temperature and a second target temperature, the first target temperature is less than the second preset temperature, and the first target temperature is greater than the second target temperature;

[0094] S1332, if the real-time temperature is greater than the first target temperature, rotating the blade 23 to a first specified angle;

[0095] S1333: if the outdoor temperature is lower than the first target temperature and the outdoor temperature is higher than the second target temperature, rotating the blade 23 to a second specified angle;

[0096] S1334: If the outdoor temperature is lower than the second target temperature, rotate the blade 23 to a third specified angle.

[0097] Specifically, when the outdoor temperature is lower than the second preset temperature, the surface air conditioner outdoor unit 1 is in a low temperature environment. In the cooling mode, the evaporator may freeze. To avoid the evaporator from freezing, it is necessary to control the shielding range of the grille body 22 and the blades 23 in real time according to the temperature of the evaporator to accurately control the opening and closing size of the air outlet 111.

[0098] In the low-temperature refrigeration mode, the grille body 22 is maintained in a parallel state with the air outlet 111, and the rotation angle of the blade 23 is controlled in real time according to the temperature of the evaporator to rotate the blade 23 to a specified angle, which is a preset rotation angle. The specified angle includes a first specified angle, a second specified angle and a third specified angle, and the first specified angle is smaller than the second specified angle, and the second specified angle is smaller than the third specified angle. At the same time, as the specified angle of the blade 23 increases, the opening of the air outlet 111 gradually decreases; in this embodiment, the first specified angle is set to 4°, the second specified angle is set to 8°, and the third specified angle is set to 12°. The staff can set the first specified angle, the second specified angle and the third specified angle according to actual conditions, which are not limited here, and the first specified angle, the second specified angle and the third specified angle correspond to the first gear, the second gear and the third gear of the low-temperature refrigeration mode, respectively.

[0099] In order to further accurately control the rotation angle of the grille assembly 2 and to accurately control the opening and closing size of the air outlet 111, the controller first obtains the real-time temperature of the evaporator, which is detected by the temperature sensor located on the evaporator, and then the real-time temperature is judged against the target temperature, wherein the target temperature is the preset temperature of the evaporator, and the target temperature includes a first target temperature and a second target temperature, and the first target temperature is less than the second preset temperature, and the first target temperature is greater than the second target temperature. In this embodiment, the first target temperature is set to 0°C and the second target temperature is set to -5°C. The staff can set the first target temperature and the second target temperature according to actual conditions, and there is no limitation here.

[0100] When the real-time temperature T1 is greater than the first target temperature, that is, the temperature of the evaporator T1>0°C, it indicates that the temperature of the evaporator is high and the probability of freezing is low. Therefore, the blade 23 is controlled to rotate to the first specified angle, that is, the air conditioner enters the first gear of low-temperature cooling mode. At this time, a small part of the blade 23 rotates to the outside of the grille body 22, thereby further blocking a small part of the air outlet 111 to reduce the air volume of the air outlet 111. At the same time, the fan of the air conditioner outdoor unit 1 runs at a low windshield, thereby reducing the heat dissipation effect of the condenser, increasing the refrigerant temperature, and thus increasing the temperature of the evaporator to avoid freezing of the evaporator.

[0101] When the real-time temperature T1 is less than the first target temperature, and the real-time temperature is greater than the second target temperature, that is, the temperature of the evaporator is -5℃≤T1≤0℃, it indicates that the temperature of the evaporator is low and freezes quickly, so the blade 23 is controlled to rotate to the second specified angle, that is, the air conditioner enters the second gear of low-temperature cooling mode. At this time, most of the blades 23 rotate to the outside of the grille body 22 to further block most of the air outlet 111, thereby making the opening of the air outlet 111 smaller to make the air outlet less. At the same time, the fan of the air conditioner outdoor unit 1 runs at a low wind speed, which further reduces the heat dissipation effect of the condenser, increases the refrigerant temperature, and thus increases the temperature of the evaporator, greatly avoiding the freezing of the evaporator.

[0102] When the real-time temperature T1 is less than the second target temperature, that is, the temperature of the evaporator T1 is less than -5°C, it indicates that the temperature of the evaporator is lower and the freezing is faster. Therefore, the blade 23 is controlled to rotate to the third specified angle, that is, the air conditioner enters the third gear of low-temperature cooling mode. At this time, most of the blades 23 rotate to the outside of the grille body 22. Compared with the second gear of low-temperature cooling mode, the blades 23 further block the air outlet 111. At this time, the air volume is lower. At the same time, the fan of the air conditioner outdoor unit 1 is turned off, thereby further reducing the heat dissipation to the condenser, thereby increasing the refrigerant temperature, and then increasing the temperature of the evaporator, which greatly avoids the freezing of the evaporator.

[0103] In this embodiment, the control accuracy of the air conditioner on the grille assembly 2 is further improved, and the rotation angles of the grille body 22 and the blades 23 are further subdivided, and the rotation angle of the blades 23 is related to the temperature of the evaporator. The lower the temperature of the evaporator, the higher the risk of evaporator freezing. Therefore, the opening and closing angle of the air outlet 111 that needs to be controlled is smaller, and the air volume of the air outlet 111 is reduced to increase the refrigerant temperature and the evaporator temperature, thereby greatly avoiding the freezing of the evaporator and improving the reliability of the air conditioner.

[0104] In one embodiment, the air conditioner control method further includes step S140.

[0105] S140, receiving shutdown information of the air conditioner, rotating the grille body 22 to a second preset angle, and rotating the blades 23 to a fourth specified angle.

[0106] Specifically, the second preset angle is a pre-set angle. In the present embodiment, the second preset angle is set to 0° or 180°, i.e., at this time, the grille body 22 and the air outlet 111 are in a parallel state; the fourth specified angle is the maximum rotation angle of the blade 23, at this time, the blade 23 protrudes the maximum outside the grille body 22, and when the grille body 22 is rotated to the second preset angle and the blade 23 is rotated to the fourth specified angle, the multiple grille bodies 22 and the multiple blades 23 are in a fully closed state, i.e., at this time, the air outlet 111 is completely closed; when the air conditioner is not needed, in order to protect the air conditioner outdoor unit 1, the air conditioner also has a protection mode. That is, when the controller receives the shutdown information of the air conditioner (including the standby state and the shutdown state), the protection mode is turned on. At this time, the grille body 22 is controlled to rotate to the second preset angle, and the blades 23 are rotated to the fourth specified angle. The grille body 22 and the blades 23 are parallel to the air outlet 111, and the blades 23 are rotated to the outside of the grille body 22, so that the multiple grille bodies 22 and the multiple blades 23 cooperate to completely cover the air outlet 111, so that the air outlet 111 is in a fully closed state, and then a protective barrier is formed on the outside of the air outlet 111 to prevent external factors such as wind, sand, dust, rain and insects from invading the interior of the outdoor unit 1 of the air conditioner, and avoid damage to the internal structural parts of the outdoor unit 1, so as to increase the service life of the air conditioner and reduce maintenance costs.

[0107] The present invention fully considers the protection requirements of the air conditioner outdoor unit 1 in harsh environments, especially in areas with frequent sandstorms, where impurities such as sand and dust pose a serious threat to the normal operation of the air conditioner outdoor unit 1. The grille assembly 2 designed in the present invention can be completely closed to form a solid protective barrier, which effectively prevents impurities such as sand and dust from entering the air conditioner to cause damage or pollution in a sandstorm environment, and also protects the cleanliness and normal operation of the air conditioner outdoor unit 1, and ensures the normal operation of the equipment by enhancing the anti-sand and dust resistance capabilities.

[0108] The control method of the air conditioner of the present application uses a controller to accurately control the opening and closing degree of the grille assembly 2 to adjust the opening and closing size of the air outlet 111, thereby optimizing the refrigeration process of the air conditioner. This intelligent control method enables the air-conditioning system to respond quickly and adjust the working state when facing a low temperature environment, thereby maintaining stable operating performance; in addition, by reducing potential risks such as compressor liquid operation caused by evaporator freezing, the implementation of the present invention further improves the reliability and service life of the air conditioner; and adds a protection mode to enhance the air conditioner's anti-sand and dust resistance and protect the safety of the equipment.

[0109] 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 conditioner, characterized in that: include: The external unit comprises an external unit body, wherein the external unit body is provided with an air outlet; A grille assembly, comprising a driving assembly and a plurality of grille bodies and a plurality of blades, wherein the plurality of grille bodies and the plurality of blades are both connected to the driving assembly, the plurality of grille bodies are arranged at intervals along the circumference of the air outlet and are rotatably connected to the external unit body, and the plurality of blades are arranged corresponding to the plurality of grille bodies and are rotatably connected to the grille bodies; The driving assembly is started to flip the multiple grille bodies and / or rotate the multiple blades, thereby adjusting the opening and closing size of the air outlet.

2. The air conditioner according to claim 1, characterized in that: The grille body is provided with a receiving groove running through both sides thereof, and the blade is located in the receiving groove; wherein, when the driving assembly is started, one end of the blade passing through the grille body rotates outside the grille body and in the receiving groove.

3. The air conditioner according to claim 2, characterized in that: The blades include a first blade and a second blade, the first blade is provided with a first rack, the second blade is provided with a second rack, the grille body is provided with a gear connected to the drive assembly, the gear is located between the first blade and the second blade, and the two sides of the gear are respectively meshed and connected with the first rack and the second rack.

4. The air conditioner according to claim 3, characterized in that: The driving assembly includes a first motor, a first driving wheel, a first driven wheel and a first rotating shaft, the first motor is connected to the first driving wheel, the first driving wheel is meshedly connected to the first driven wheel, and the first rotating shaft connects the first driven wheel and the gear.

5. The air conditioner according to claim 4, characterized in that: The driving assembly also includes a second motor, a second driving wheel, a second driven wheel and a second rotating shaft, the second motor is connected to the second driving wheel, the second driving wheel is meshingly connected to the second driven wheel, and both ends of the second rotating shaft are respectively connected to the second driven wheel and the grille body.

6. The air conditioner according to claim 5, characterized in that: The second rotating shaft is provided with channels penetrating through both ends thereof, the channels are communicated with the accommodating groove, and one end of the first rotating shaft passes through the channel and the accommodating groove and is rotatably connected to the external machine body.

7. The air conditioner according to any one of claims 1 to 6, characterized in that: The driving assembly also includes a motor box, which is fixed at the center of the air outlet. One end of the grille body is arranged close to the motor box, and the other end is extended along the radial direction of the air outlet toward the edge of the air outlet.

8. A method for controlling an air conditioner, characterized in that: Applied to the air conditioner according to any one of claims 1 to 7, the method comprises: Receive the power-on command and determine whether to turn on the cooling mode; If the cooling mode is turned on, the outdoor temperature is obtained, and the difference between the outdoor temperature and the preset temperature is determined; The rotation angle of the grille body and / or the blades is controlled according to the judgment result.

9. The method according to claim 8, characterized in that The preset temperature includes a first preset temperature and a second preset temperature, and the first preset temperature is greater than the second preset temperature. The step of controlling the rotation angle of the grille body and / or the blade according to the judgment result includes: If the outdoor temperature is greater than the first preset temperature, rotating the grille body to a first preset angle; If the outdoor temperature is lower than the first preset temperature and the outdoor temperature is higher than the second preset temperature, rotating the grille body to a second preset angle; If the outdoor temperature is lower than the second preset temperature, the grille body is rotated to a second preset angle, and the blades are rotated to a specified angle.

10. The method according to claim 9, characterized in that The designated angle includes a first designated angle, a second designated angle and a third designated angle, and the first designated angle is smaller than the second designated angle, and the second designated angle is smaller than the third designated angle. If the outdoor temperature is smaller than the second preset temperature, the step of rotating the grille body to the second preset angle and rotating the blades to the designated angle comprises: Acquire the real-time temperature of the evaporator, and determine the magnitude of the real-time temperature and the target temperature, wherein the target temperature includes a first target temperature and a second target temperature, the first target temperature is less than the second preset temperature, and the first target temperature is greater than the second target temperature; If the real-time temperature is greater than the first target temperature, rotating the blade to a first specified angle; If the outdoor temperature is lower than the first target temperature and the outdoor temperature is higher than the second target temperature, rotating the blade to a second specified angle; If the outdoor temperature is lower than the second target temperature, the blades are rotated to a third specified angle.

11. The method according to claim 8, characterized in that The method further comprises: The shutdown information of the air conditioner is received, the grille body is rotated to a second preset angle, and the blades are rotated to a fourth specified angle.

Images