Air conditioner indoor unit

Abstract

The application relates to the air conditioning technical field, and discloses an air conditioner indoor unit which comprises a casing, the casing is provided with an air outlet, and further comprises: a guide vane which is arranged at the air outlet in a closed state; a first arc-shaped rack which is hingedly connected to one end of the guide vane; a second arc-shaped rack which is slidingly connected to one end of the guide vane; and a gear which is in meshing transmission with the first arc-shaped rack and the second arc-shaped rack; wherein the gear drives the first arc-shaped rack and the second arc-shaped rack to synchronously move first, so that the guide vane is extended from the closed state to an inclined position; then the gear drives the second arc-shaped rack to move, the first arc-shaped rack synchronously moves with the second arc-shaped rack under the action of gravity, so that the guide vane is continuously extended to an intermediate position; finally, the gear drives the second arc-shaped rack to move relative to the first arc-shaped rack, so that the guide vane is rotated to an air guiding position. The two arc-shaped racks drive the guide vane to move to the air guiding position through the above mode, the structure of the air conditioner indoor unit is simplified, and the air supply is soft.

Description

TECHNICAL FIELD

[0001] The present application relates to the air conditioning technical field, for example, relates to an air conditioner indoor unit. BACKGROUND

[0002] When the air conditioner is blowing, the hot air or cold air blown out from the heat exchanger is directly blown out from the air outlet, especially when the cold air is directly blown out, a large temperature difference is formed relative to the original air temperature in the room, which makes the user feel uncomfortable. Moreover, if the human body is often directly blown by such a cold air flow with a large temperature difference, it is easy to cause cold or air conditioning disease.

[0003] In the related art, a wall-mounted air conditioner is provided, which includes a shell, a heat exchanger and a fan are arranged in the shell, a U-shaped slot-shaped air guide plate is arranged in front of the shell, an air guide air duct is formed between the air guide plate and the front shell, and the air not passing through the heat exchanger enters the air guide air duct to mix with the air blown out from the air outlet air duct to make the air blown out soft.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] In the related art, an air guide plate needs to be added outside the shell of the air conditioner indoor unit, and the air guide plate is connected to the outside of the shell through a fixing device. The overall structure of the air conditioner indoor unit is relatively complex, and the appearance of the air conditioner indoor unit is affected. At present, there is no air conditioner indoor unit with a simple structure for guiding air by using an air guide plate and soft air supply. SUMMARY

[0006] To have a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not a general review, nor is it intended to determine key / important components or delineate the scope of protection of these embodiments, but as a prelude to the detailed description below.

[0007] The air conditioner indoor unit provided by the embodiments of the present disclosure improves the softness of air supply of the air conditioner indoor unit by driving the air guide plate to move according to a preset path through the first arc-shaped rack and the second arc-shaped rack under considering the gravity factor of the rack itself, and simplifies the structure of the air conditioner indoor unit.

[0008] In some embodiments, the air conditioner indoor unit comprises a casing, the casing is provided with an air outlet, further comprising a guide vane, a first arc-shaped rack, a second arc-shaped rack and a gear, the guide vane is arranged at the air outlet in a closed state; one end of the first arc-shaped rack is hinged to the guide vane, one end of the second arc-shaped rack is slidingly connected to the guide vane, the gear is in meshing transmission with the first arc-shaped rack and the second arc-shaped rack; wherein the gear drives the first arc-shaped rack and the second arc-shaped rack to move synchronously first, so that the guide vane is extended from the closed state to an inclined position; then the gear drives the second arc-shaped rack to move, the first arc-shaped rack moves synchronously with the second arc-shaped rack under the action of gravity, so that the guide vane is continuously extended to an intermediate position; finally, the gear drives the second arc-shaped rack to move relative to the first arc-shaped rack, so that the guide vane is rotated to a guide position.

[0009] Optionally, when the guide vane is at the guide position, the guide vane is below the air conditioner indoor unit and is in a horizontal state.

[0010] Optionally, when the guide vane is at the closed state, the guide vane forms an angle ω0 with the horizontal direction, when the guide vane is at the intermediate position, the guide vane forms an angle ω1 with the horizontal direction, wherein ω0>ω1.

[0011] Optionally, when the guide vane moves from the closed state to the intermediate position, the first arc-shaped rack and the second arc-shaped rack rotate by an angle ω4, wherein ω4=ω0-ω1.

[0012] Optionally, the number of gears is one.

[0013] Optionally, the width of the gear is greater than the width of the second arc-shaped rack.

[0014] Optionally, the first arc-shaped rack and the second arc-shaped rack are slidingly connected and arranged side by side along the length direction of the guide vane.

[0015] Optionally, the first arc-shaped rack comprises a first tooth part, the second arc-shaped rack comprises a second tooth part, the effective length of the first tooth part is less than the effective length of the second tooth part.

[0016] Optionally, the first arc-shaped rack further comprises a toothless part, the starting end of the toothless part is connected to the end of the first tooth part, and the first tooth part is arranged close to the guide vane; the effective length of the toothless part is greater than or equal to the effective length of the first tooth part.

[0017] Optionally, the second arc-shaped rack includes a bent section and a second connecting shaft, the bent section is arranged on the second arc-shaped rack and located at one end close to the air outlet, and the second connecting shaft is arranged at a free end of the bent section, and the second connecting shaft is used for being in sliding connection with the air deflector.

[0018] The air conditioner indoor unit provided by the embodiments of the present disclosure can achieve the following technical effects:

[0019] In the embodiments of the present disclosure, the air conditioner indoor unit includes an air deflector, a first arc-shaped rack, a second arc-shaped rack, and a gear, the first arc-shaped rack is hingedly connected with the air deflector, the second arc-shaped rack is in sliding connection with the air deflector, and the gear is in meshing transmission with the first arc-shaped rack and the second arc-shaped rack to drive the air deflector to extend out of the air outlet. In this way, the gear can drive the first arc-shaped rack and the second arc-shaped rack to move synchronously or relatively under the driving of an external force. During the process of the air deflector from the closed state to the air guiding position, the air deflector sequentially passes through the inclined position and the intermediate position, and during the process from the inclined position to the intermediate position, the gear is only in meshing transmission with the second arc-shaped rack, and the first arc-shaped rack moves synchronously with the second arc-shaped rack under the action of its own gravity, thereby synchronously driving the air deflector to continue extending out of the air outlet. The embodiments of the present disclosure take into account the gravity of the rack itself, and utilize the gravity of the first arc-shaped rack to move synchronously with the second arc-shaped rack, so that the air deflector can reach the air guiding position. The air flow in the room is guided to the vicinity of the air outlet by the air deflector, and is mixed with the air flow blown out of the heat exchanger to blow to the user, thereby improving the softness of the air supply. Moreover, the air deflector of the air conditioner indoor unit is utilized to guide the air, and it is not necessary to arrange an air guiding device outside the casing of the air conditioner indoor unit, thereby simplifying the structure of the air conditioner indoor unit.

[0020] The foregoing general description and the following description are only exemplary and explanatory, and are not intended to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0021] One or more embodiments are exemplarily illustrated by corresponding drawings, which do not constitute limitation on the embodiments, elements with the same reference numerals in the drawings are shown as similar elements, the drawings do not constitute proportional limitation, and wherein:

[0022] Figure 1 is a whole schematic diagram of an air conditioner indoor unit provided by the embodiments of the present disclosure;

[0023] Figure 2 is a state schematic diagram of the air conditioner indoor unit when the air deflector is located at the intermediate position provided by the embodiments of the present disclosure;

[0024] Figure 3 is a state schematic diagram of the air conditioner indoor unit when the air deflector is located at the air guiding position provided by the embodiments of the present disclosure;

[0025] Figure 4 is a partial structure schematic diagram of an air conditioner indoor unit provided by an embodiment of the present disclosure;

[0026] Figure 5 is a structure schematic diagram of a first arc-shaped rack provided by an embodiment of the present disclosure;

[0027] Figure 6 is a structure schematic diagram of a second arc-shaped rack provided by an embodiment of the present disclosure;

[0028] Figure 7 is a cross-sectional schematic diagram of a part of the structure of the air conditioner indoor unit when the air deflector is in the middle position provided by an embodiment of the present disclosure;

[0029] Figure 8 is a cross-sectional schematic diagram of a part of the structure of the air conditioner indoor unit when the air deflector is in the air guiding position provided by an embodiment of the present disclosure;

[0030] Figure 9 is a state schematic diagram of a part of the structure of the air conditioner indoor unit when the air deflector is stretched from the closed state to the middle position provided by an embodiment of the present disclosure;

[0031] Figure 10 is a state schematic diagram of a part of the structure of the air conditioner indoor unit when the air deflector is in the air guiding position provided by an embodiment of the present disclosure;

[0032] Figure 11 is a structure schematic diagram of an air deflector provided by an embodiment of the present disclosure.

[0033] Reference signs:

[0034] 10: air deflector; 11: first mounting seat; 111: mounting hole; 12: second mounting seat; 121: slide; 20: first arc-shaped rack; 21: first tooth part; 22: first connecting hole; 23: sliding cavity; 24: first sliding block; 25: limiting groove; 26: toothless part; 30: second arc-shaped rack; 31: second tooth part; 32: bending section; 33: second connecting shaft; 34: slide; 35: second sliding block; 36: limiting column; 40: gear. DETAILED DESCRIPTION

[0035] In order to enable a person skilled in the art to better understand the features and technical contents of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the drawings, which are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, in order to simplify the drawings, well-known structures and devices can be simplified.

[0036] The terms "first", "second", and the like in the description and in the claims of the embodiments of the present disclosure and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0037] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back", and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to indicating the orientation or positional relationship, the above-mentioned part of the terms can also be used to represent other meanings, for example, the term "upper" can also be used to represent a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0038] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixed connection, detachable connection, or integral structure; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0039] Unless otherwise specified, the term "a plurality of" means two or more.

[0040] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the preceding and following objects. For example, A / B means: A or B.

[0041] The term "and / or" is a description of the association between objects, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, the three relationships.

[0042] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0043] The embodiments of the present disclosure provide an air conditioner.

[0044] The air conditioner provided by the embodiments of the present disclosure is an air uniformization air conditioner with soft air supply. The first arc-shaped rack 20 and the second arc-shaped rack 30 can drive the air deflector 10 to move from the closed state to the air guiding position outside the air conditioner, so as to guide the indoor air flow to the vicinity of the air outlet, mix the air flow with the air flow blown out from the heat exchanger, and then blow the mixed air flow to the user. In this way, the air flow blown out from the heat exchanger will not directly blow to the user, and the comfort of the user is improved. In addition, the air guiding channel is arranged outside the air conditioner, which will not cause the loss of the air supply amount of the air conditioner, and the air guiding device does not need to be arranged outside the casing of the air conditioner, so that the structure of the air conditioner is simplified.

[0045] The embodiments of the present disclosure also provide an air conditioner indoor unit, as shown in Figures 1 to 11

[0046] In some embodiments, the air conditioner indoor unit comprises a casing, the casing is provided with an air outlet, and further comprises an air deflector 10, a first arc-shaped rack 20, a second arc-shaped rack 30 and a gear 40. The air deflector 10 is arranged at the air outlet in the closed state. One end of the first arc-shaped rack 20 is hinged to the air deflector 10, one end of the second arc-shaped rack 30 is slidingly connected to the air deflector 10, and the gear 40 is in meshing transmission with the first arc-shaped rack 20 and the second arc-shaped rack 30. The gear 40 drives the first arc-shaped rack 20 and the second arc-shaped rack 30 to move synchronously, so that the air deflector 10 is stretched out of the air outlet to the inclined position from the closed state. Then, the gear 40 drives the second arc-shaped rack 30 to move, the first arc-shaped rack 20 synchronously moves with the second arc-shaped rack 30 under the action of gravity, so that the air deflector 10 is continuously stretched out to the intermediate position. Finally, the gear 40 drives the second arc-shaped rack 30 to move relative to the first arc-shaped rack 20, so that the air deflector 10 is rotated to the air guiding position.

[0047] ​In the embodiments of the present disclosure, the indoor unit of the air conditioner comprises a deflector 10, a first arc-shaped rack 20, a second arc-shaped rack 30 and a gear 40. The first arc-shaped rack 20 is hinged to the deflector 10, the second arc-shaped rack 30 is slidingly connected to the deflector 10, and the gear 40 is in meshing transmission with the first arc-shaped rack 20 and the second arc-shaped rack 30 to drive the deflector 10 to extend out of the air outlet to guide air. In this way, the gear 40 can drive the first arc-shaped rack 20 and the second arc-shaped rack 30 to move synchronously or relatively under the driving of an external force. During the process of the deflector 10 from the closed state to the air guiding position, the deflector 10 sequentially passes through an inclined position and an intermediate position. During the process of the deflector 10 from the inclined position to the intermediate position, the gear 40 is only in meshing transmission with the second arc-shaped rack 30, the first arc-shaped rack 20 moves synchronously with the second arc-shaped rack 30 under the action of its own gravity, and the deflector 10 is further driven to continue extending out of the air outlet. The embodiments of the present disclosure take into account the gravity of the rack itself, and the gravity of the first arc-shaped rack 20 can be used to move synchronously with the second arc-shaped rack 30, so that the deflector 10 can reach the air guiding position. The indoor air is guided to the vicinity of the air outlet by the deflector 10, and is mixed with the air blown out of the heat exchanger to blow to the user, thereby improving the softness of the air supply. Moreover, the air is guided by the deflector 10 of the indoor unit of the air conditioner, and no air guiding device needs to be arranged outside the cabinet of the indoor unit, thereby simplifying the structure of the indoor unit of the air conditioner.

[0048] Optionally, a flow guide plate is arranged in the air outlet of the indoor unit of the air conditioner to guide air upward and downward.

[0049] It can be understood that the deflector 10 is used to guide air, and can guide indoor air to the vicinity of the air outlet. The flow guide plate arranged in the air outlet can guide air upward and downward to meet different requirements of refrigeration or heating. The air blown out of the flow guide plate and the air guided to the air outlet by the deflector 10 are mixed at the air outlet and blown to the user, thereby achieving the effect of uniform air supply.

[0050] Optionally, when the deflector 10 is in the air guiding position, the deflector 10 is located below the indoor unit of the air conditioner and is in a horizontal state.

[0051] When the deflector 10 is in the horizontal state, the upper edge of the deflector 10 is located below the indoor unit of the air conditioner and is located behind the air outlet. In this way, when the air conditioner supplies air downward, the deflector 10 will not block the air outlet, and will not affect the refrigeration or heating effect of the air conditioner. Moreover, the air blown out of the heat exchanger will not directly blow to the deflector, and no condensation will be generated on the deflector.

[0052] Optionally, when the deflector 10 is in the horizontal state, the distance between the deflector 10 and the lower cabinet of the indoor unit of the air conditioner is greater than 30 mm.

[0053] In the embodiments of the present disclosure, the air deflector 10 functions to guide air. When the air conditioner is turned on, the air deflector 10 extends from the closed state to the intermediate position, and then rotates to the horizontal state. The air deflector 10 will not rotate or flip again in the horizontal state. In the horizontal state, the air deflector 10 has a preset distance from the lower shell of the air conditioner. It can be understood that when the preset distance is small, the air deflector 10 and the lower shell of the air conditioner may generate a certain air guiding noise, and cannot guide air. The preset distance is set to be greater than 30 mm, and the air deflector 10 can have a better air guiding effect, and will not generate other noise during air guiding. For example, the preset distance can be 40 mm, 50 mm, 60 mm or 100 mm, etc.

[0054] Optionally, when the air deflector 10 is in the closed state, the angle between the air deflector 10 and the horizontal direction is ω0, and when the air deflector 10 is in the intermediate position, the angle between the air deflector 10 and the horizontal direction is ω1, wherein ω0> ω1.

[0055] As shown in Figure 9 , the solid line in Figure 9 is a schematic diagram of the internal state of the air conditioner indoor unit when the air deflector 10 is in the closed state, and the dashed line in Figure 9 is a schematic diagram of the internal state of the air conditioner indoor unit when the air deflector 10 is in the intermediate position. During the process of extending the air deflector 10 from the closed state to the intermediate position, not only the position of the air deflector 10 changes, but also the angle between the air deflector 10 and the horizontal direction becomes smaller. That is, the air deflector 10 also rotates in angle during the extension process, so that the air deflector 10 rotates to the horizontal state for guiding air as soon as possible through the smallest stroke.

[0056] Optionally, when the air deflector 10 moves from the closed state to the intermediate position, the first arc-shaped rack 20 and the second arc-shaped rack 30 rotate by an angle ω4, wherein ω4 = ω0- ω1.

[0057] During the movement of the air deflector 10 from the closed state to the intermediate position, the first arc-shaped rack 20 and the second arc-shaped rack 30 move synchronously, so that the rotation angles of the first arc-shaped rack 20 and the second arc-shaped rack 30 are both ω4. ω4 can be obtained by experiments or measurements of ω0 and ω1, and then the arc length corresponding to ω4 can be determined, that is, the length of the tooth part of the second arc-shaped rack 30 in the above process can be obtained. According to the above process, the movement control of the first arc-shaped rack 20 and the second arc-shaped rack 30 on the air deflector 10 is more accurate, which can drive the air deflector 10 to open to the air guiding position.

[0058] Optionally, the number of gears 40 is one.

[0059] In the embodiments of the present disclosure, the first arc-shaped rack 20 and the second arc-shaped rack 30 are only engaged with the same gear 40, and the two arc-shaped racks can be driven to realize the above-mentioned extension and rotation of the air deflector 10 through the engagement of the gear 40 and the arc-shaped racks with different teeth, so that the structure inside the air conditioner indoor unit is relatively simple.

[0060] Optionally, the width of the gear 40 is greater than the width of the second arc-shaped rack 30.

[0061] It can be understood that, in the process of extending the air deflector 10 from the closed state to the inclined position, the gear 40 is synchronously engaged with the first arc-shaped rack 20 and the second arc-shaped rack 30, and in order to make the gear 40 have sufficient engagement contact surface with the two racks, the width of the gear 40 can also be set to be greater than or equal to the sum of the widths of the two arc-shaped racks.

[0062] Optionally, the first arc-shaped rack 20 and the second arc-shaped rack 30 are slidingly connected and arranged side by side along the length direction of the air deflector 10.

[0063] It can be understood that the first side surface of the first arc-shaped rack 20 abuts against the second side surface of the second arc-shaped rack 30. Optionally, the first side surface is provided with a sliding cavity 23 recessed inward, and the second side surface is provided with a sliding strip 34 slidingly arranged in the sliding cavity 23.

[0064] In the embodiments of the present disclosure, the first arc-shaped rack 20 and the second arc-shaped rack 30 are arranged side by side, the first side surface of the first arc-shaped rack 20 opposite to the second arc-shaped rack 30 is provided with a sliding cavity 23, and correspondingly, the second side surface of the second arc-shaped rack 30 is provided with a sliding strip 34. When the first arc-shaped rack 20 and the second arc-shaped rack 30 move relatively, the sliding strip 34 slides in the sliding cavity 23. That is, in the process of moving the air deflector 10 from the intermediate position to the horizontal state, the first arc-shaped rack 20 stops moving, and the second arc-shaped rack 30 moves relative to the first arc-shaped rack 20. That is, the sliding strip 34 of the second arc-shaped rack 30 slides in the sliding cavity 23 of the first arc-shaped rack 20, so that the second arc-shaped rack 30 continues to be driven by the gear 40 in the preset direction. The first arc-shaped rack 20 and the second arc-shaped rack 30 are slidingly connected in the above-mentioned manner, so that when the second arc-shaped rack 30 is driven to engage with the gear 40, the second arc-shaped rack 30 can still move along the preset track, preventing the second arc-shaped rack 30 from moving off the track, and improving the reliability of the two arc-shaped racks of the present application.

[0065] Optionally, the bottom surface of the sliding cavity 23 extends to the side close to the second arc-shaped rack 30 and wraps the lower surface of the second arc-shaped rack 30. In this way, the slide bar 34 on one side of the second arc-shaped rack 30 is in the sliding cavity 23, and the lower surface of the second arc-shaped rack 30 abuts against the bottom surface of the sliding cavity 23, further defining the movement direction of the second arc-shaped rack 30 relative to the first arc-shaped rack 20, and improving the reliability of the movement of the second arc-shaped rack 30.

[0066] Optionally, the center of the circle on which the first arc-shaped rack 20 is located and the center of the circle on which the second arc-shaped rack 30 is located coincide on the same projection plane.

[0067] It can be understood that the first arc-shaped rack 20 and the second arc-shaped rack 30 are both arc-shaped, which can shorten the movement stroke of the air deflector 10 from the closed state to the position below the air conditioner, so that the air deflector 10 reaches the preset horizontal state as soon as possible. Moreover, the arc-shaped rack occupies less space on the side of the air conditioner indoor unit, which can adapt to more types of air conditioners.

[0068] The center of the circle on which the first arc-shaped rack 20 is located and the center of the circle on which the second arc-shaped rack 30 is located coincide on the same projection plane, that is, the bending degrees of the first arc-shaped rack 20 and the second arc-shaped rack 30 are the same. In this way, the first arc-shaped rack 20 and the second arc-shaped rack 30 can be driven by the same driving element to first synchronously drive the air deflector 10 to extend out of the air conditioner, and then the first arc-shaped rack 20 and the second arc-shaped rack 30 slide to generate relative movement, thereby driving the air deflector 10 to rotate to the horizontal state.

[0069] Optionally, the first arc-shaped rack 20 includes a first tooth portion 21, and the second arc-shaped rack 30 includes a second tooth portion 31. The effective length of the first tooth portion 21 is less than the effective length of the second tooth portion 31.

[0070] In the embodiments of the present disclosure, the effective length of the first tooth portion 21 refers to the length of the tooth portion engaged by the gear 40 during the process that the air deflector 10 extends from the closed state to the inclined position. The effective length of the second tooth portion 31 refers to the length of the tooth portion engaged by the gear 40 during the process that the air deflector 10 rotates from the closed state to the air guiding position.

[0071] It is understood that the effective length of the second tooth portion 31 is greater than the effective length of the first tooth portion 21, allowing the air deflector 10 to move along the following trajectory: When the air deflector 10 is in the closed state, the gear 40 synchronously engages with the first and second curved racks 20, 30, driving the air deflector 10 to extend to the tilted position. The gear 40 then continues to engage with the second curved rack 30, driving the air deflector 10 to extend to the middle position. When the air deflector 10 is in the tilted position, the gear 40 engages with the end of the first tooth portion 21. The gear 40 continues to engage with the second curved rack 30. Under the action of gravity, the first curved rack 20 moves synchronously with the second curved rack 30, driving the air deflector 10 to continue extending to the middle position. Finally, the second curved rack 30 moves relative to the first curved rack 20, driving the air deflector 10 to rotate to a horizontal position that guides the wind.

[0072] Optionally, the first arc-shaped rack 20 also includes a toothless portion 26, the starting end of the toothless portion 26 is connected to the end of the first tooth portion 21, and the first tooth portion 21 is arranged close to the air guide plate 10; the effective length of the toothless portion 26 is greater than or equal to the effective length of the first tooth portion 21.

[0073] like Figure 5 As shown, the upper surface of the first arc-shaped rack 20 is provided with a first tooth portion 21 and a toothless portion 26 in sequence. The effective length of the toothless portion 26 is the length of the tooth portion of the gear 40 meshing with the second arc-shaped rack 30 when the wind deflector 10 moves from the inclined position to the wind-inducing position. Figure 5 As shown, the effective length of the toothless portion 26 on the first arcuate rack 20 is greater than the effective length of the first tooth portion 21. This results in the following motion trajectory of the air deflector 10 as it extends to the intermediate position. The process of extending the air deflector 10 from the closed state to the intermediate position includes two motion processes: when the air deflector 10 is in the closed state, the gear 40 is located at the effective starting end of the first tooth portion 21 and the second tooth portion 31, and the gear 40 simultaneously engages with the first tooth portion 21 and the second tooth portion 31, driving the air deflector 10 to extend to the tilted position; when the air deflector 10 is in the tilted position, the gear 40 engages with the end of the first tooth portion 21, about to engage with the toothless portion 26, while the gear 40 continues to engage with the second tooth portion 31, driving only the second arcuate rack 30 to move. While the gear 40 is engaged only with the second tooth portion 31, the first arcuate rack 20, under the action of its own weight, continues to move synchronously with the second arcuate rack 30.

[0074] Optionally, there is a limiting mechanism between the first arc-shaped rack 20 and the second arc-shaped rack 30, and the limiting mechanism includes a limiting groove 25 and a limiting column 36. The limiting groove 25 is arranged on the side of the first arc-shaped rack 20 along the length direction of the first arc-shaped rack 20; the limiting column 36 is arranged on the side of the second arc-shaped rack 30 opposite to the first arc-shaped rack 20, and it is slidably arranged in the limiting groove 25.

[0075] As shown in Figure 4 The first arc-shaped rack 20 and the second arc-shaped rack 30 are arranged side by side and abut each other. The side of the first arc-shaped rack 20 is provided with a limiting groove 25, and the corresponding side of the second arc-shaped rack 30 is provided with a limiting column 36. Optionally, the limiting groove 25 is in the shape of an oblong ellipse, and the limiting column 36 is in the shape of a cylinder. The outer diameter of the limiting column 36 is equal to the width of the limiting groove 25, so that the limiting column 36 can slide along the limiting groove 25 to limit the movement track of the second arc-shaped rack 30 according to the track of the limiting groove 25. In the embodiment of the present disclosure, the limiting groove 25 is arranged along the length direction of the first arc-shaped rack 20, and the limiting groove 25 has an upper end away from the air deflector 10 and a lower end close to the air deflector 10.

[0076] In the embodiment of the present disclosure, the movement track of the air deflector 10 is first extended from the closed state to the inclined position, then extended to the intermediate position, and finally rotated to the air guiding position. When the air deflector 10 is in the closed state, the inclined position and the intermediate position, the limiting column 36 is located at the upper end of the limiting groove 25. When the air deflector 10 rotates from the intermediate position to the air guiding position, the limiting column 36 slides from the upper end of the limiting groove 25 to the lower end of the limiting groove 25. That is, in the above-mentioned rotation process of the air deflector, the second arc-shaped rack 30 moves relative to the first arc-shaped rack 20. In the process of retracting the air deflector 10 from the air guiding position, the limiting column 36 first slides from the lower end of the limiting groove 25 to the upper end of the limiting groove 25, and then the limiting column 36 drives the movement of the first arc-shaped rack 20. When the limiting column 36 moves to the upper end of the limiting groove 25, the teeth on the first arc-shaped rack 20 and the second arc-shaped rack 30 correspond to the preset position, avoiding the misalignment between them, so that the first arc-shaped rack 20 and the second arc-shaped rack 30 synchronously drive the air deflector 10 to return to the closed state, and the air deflector 10 is tightened in the closed state. Through the above-mentioned limiting mechanism, the precision of the rack set driving the air deflector 10 to move is improved.

[0077] In the process of retracting the air deflector 10 from the air guiding position, the gear 40 first drives the movement of the second arc-shaped rack 30, and then the second arc-shaped rack 30 drives the movement of the first arc-shaped rack 20 through the above-mentioned limiting structure. By setting the effective length of the toothless part 26 to be greater than the effective length of the first tooth part 21, the gear 40 will not engage with the first tooth part 21 too early in the return process of the air deflector 10, so that the first arc-shaped rack 20 has enough space to adjust the position of its own teeth, so that its own teeth and the teeth of the second arc-shaped rack 30 are arranged and correspond to the preset position, and misalignment does not occur.

[0078] Optionally, one end of the first arc-shaped rack 20 is provided with a first connecting hole 22, and the first connecting hole 22 is used for hinging with the air deflector 10.

[0079] Optionally, one end of the air deflector 10 is provided with a first mounting seat 11, and the first mounting seat 11 is provided with a mounting hole 111, and the mounting hole 111 is hinged to the first connecting hole 22 through a connecting piece.

[0080] Optionally, the second arc-shaped rack 30 comprises a bending section 32 and a second connecting shaft 33, the bending section 32 is arranged on the second arc-shaped rack 30 at one end close to the air outlet, and the second connecting shaft 33 is arranged at a free end of the bending section 32, and the second connecting shaft 33 is used for sliding connection with the air deflector 10.

[0081] Optionally, one end of the air deflector 10 is further provided with a second mounting seat 12, the first mounting seat 11 and the second mounting seat 12 are arranged side by side, and the second mounting seat 12 is provided with a sliding groove 121, and the second connecting shaft 33 is slidingly arranged in the sliding groove 121.

[0082] Optionally, the sliding groove 121 is in a straight line type, and the width of the sliding groove 121 is equal to the outer diameter of the second connecting shaft 33. In this way, when the air deflector 10 rotates from the middle position to the horizontal state, the second connecting shaft 33 can slide in the sliding groove 121, so that the air deflector 10 rotates around the first connecting hole 22 as the fulcrum.

[0083] When the air deflector 10 is in the closed state, the second connecting shaft 33 is located at the starting end of the sliding groove 121. In the process that the air deflector 10 extends from the closed state to the middle position, the second connecting shaft 33 is always located at the starting end of the sliding groove 121, as shown in Figure 7 When the air deflector 10 rotates from the middle position to the horizontal state, the second connecting shaft 33 is located at the end of the sliding groove 121, as shown in Figure 8 The starting end of the sliding groove 121 is the end of the sliding groove 121 close to the upper end of the air deflector 10, and the end of the sliding groove 121 is the end of the sliding groove 121 close to the middle of the air deflector 10.

[0084] The arrangement of the bending section 32 on the second arc-shaped rack 30 can cooperate with the first arc-shaped rack 20 to rotate the air deflector 10 from the middle position to the horizontal state. In the process that the air deflector 10 moves from the middle position to the horizontal state, the gear is only in transmission connection with the second arc-shaped rack 30, and the first arc-shaped rack 20 stops moving. The second arc-shaped rack 30 is subjected to a downward movement force, and the force is transmitted to the bending section 32. The extension direction of the bending section 32 is opposite to the bending direction of the second arc-shaped rack 30, so that the second connecting shaft 33 at the free end of the bending section 32 is subjected to a downward and rearward movement force at the same time, which promotes the second connecting shaft 33 to move from the starting end of the sliding groove 121 to the end of the sliding groove 121. The air deflector 10 is subjected to the above-mentioned force and moves from the middle position to the horizontal state.

[0085] Optionally, when the air deflector 10 is in the middle position, the included angle between the air deflector 10 and the horizontal direction is ω1, and the included angle between the bending section 32 and the air deflector 10 is ω2, wherein ω1>ω2.

[0086] The state of the rack set when the air deflector 10 is in the middle position is shown by the dashed line in FIG. 6. The bending section 32 extends in a direction away from the second arc-shaped rack 30. By limiting the sizes of ω1 and ω2 in the middle position, the included angle range between the bending section 32 and the horizontal direction can be obtained, so that the second arc-shaped rack 30 can drive the air deflector 10 to rotate from the middle position to the air guiding position according to the preset track, and the accuracy of the second arc-shaped rack 30 in controlling the movement track of the air deflector 10 is improved. Figure 9

[0087] Optionally, when the air deflector 10 rotates from the middle position to the air guiding position, the angle through which the second arc-shaped rack 30 rotates relative to the first arc-shaped rack 20 is ω3, and the relationship between ω3, ω2 and ω1 satisfies: ω3=ω1-ω2.

[0088] The angle ω1 through which the air deflector 10 rotates from the middle position to the air guiding position is equal to the sum of ω2 and ω3. Wherein ω1 can be preset through experiments, and then the relationship between ω2 and ω3 can be obtained, so that the rotation angle of the air deflector 10 in the above process can be accurately controlled in the actual operation process of the air deflector 10.

[0089] It can be understood that the arc length corresponding to ω3 is the length L1 of the limiting groove 25. By adjusting ω2, the length of the limiting groove 25 can be adjusted, and then the length of the sliding channel 121 of the air deflector can be adjusted. In this way, the rack set can drive the air deflector 10 to rotate to the air guiding position according to the preset track.

[0090] In the embodiments of the present disclosure, by limiting the related angle parameters in the process of extending the air deflector 10 to the middle position and rotating the air deflector 10 from the middle position to the air guiding position, the rack set can accurately drive the air deflector 10 to extend and rotate to the horizontal air guiding position, and the accuracy of the rack set in controlling the movement stroke of the air deflector 10 is improved.

[0091] Optionally, the length L1 of the limiting groove 25 is greater than the length L2 of the sliding channel 121.

[0092] ​When the air deflector 10 is rotated from the intermediate position to the air guiding position, i.e., the horizontal state, the limiting column 36 slides from the upper end of the limiting groove 25 to the lower end of the limiting groove 25, the second connecting shaft 33 slides from the starting end of the slide 121 to the end of the slide 121, and the length L1 of the limiting groove 25 and the length L2 of the slide 121 have a preset correlation. For example, when the length L1 of the limiting groove 25 is greater than the length L2 of the slide 121, the air deflector 10 can be rotated from the intermediate position to the horizontal position, thereby more accurately controlling the rotation angle of the air deflector 10.

[0093] Optionally, the first arc-shaped rack 20 and the second arc-shaped rack 30 are arranged in the shell, the shell is fixed to the side of the air conditioner indoor unit, and the first arc-shaped rack 20 and the second arc-shaped rack 30 are slidingly arranged in the shell. The side of the first arc-shaped rack 20 is provided with a first sliding block 24, the side of the second arc-shaped rack 30 is provided with a second sliding block 35, and the two sides of the shell are provided with sliding grooves, and the first sliding block 24 and the second sliding block 35 are slidingly arranged in the sliding grooves, respectively.

[0094] By arranging the sliding grooves in the shell, the movement direction of the first arc-shaped rack 20 and the second arc-shaped rack 30 under the transmission of the gear 40 is further limited, so that the first arc-shaped rack 20 and the second arc-shaped rack 30 can drive the air deflector 10 to move to the intermediate position along a preset path, and then the second arc-shaped rack 30 slides under the joint limitation of the sliding groove of the shell and the sliding cavity 23 of the first arc-shaped rack 20, thereby driving the air deflector 10 to rotate to the horizontal state.

[0095] The above description and drawings sufficiently show the embodiments of the present disclosure to enable one skilled in the art to practice them. Other embodiments can include structural and other changes. The embodiments represent only a few of the possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be changed. Parts and features of some embodiments can be included in or replace parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An air conditioner indoor unit comprising a casing provided with an air outlet, characterized in that, Also comprising: A deflector, which is arranged in the air outlet in the closed state; A first arc-shaped rack, one end of which is hinged to the deflector; A second arc-shaped rack, one end of which is slidingly connected to the deflector; And, A gear, which is in meshing transmission with the first arc-shaped rack and the second arc-shaped rack; Wherein, the gear drives the first arc-shaped rack and the second arc-shaped rack to move synchronously first, so that the deflector extends from the closed state to the air outlet to the inclined position, then the gear drives the second arc-shaped rack to move, the first arc-shaped rack moves synchronously with the second arc-shaped rack under the action of gravity, so that the deflector continues to extend to the intermediate position, finally, the gear drives the second arc-shaped rack to move relative to the first arc-shaped rack, so that the deflector rotates to the air guide position; The first arc-shaped rack and the second arc-shaped rack are slidingly connected and arranged side by side along the length direction of the deflector, the first side surface of the first arc-shaped rack abuts against the second side surface of the second arc-shaped rack, the first side surface is provided with a sliding cavity recessed inward, and the second side surface is provided with a sliding strip slidingly arranged in the sliding cavity.

2. The indoor unit of the air conditioner according to claim 1, characterized in that: When the deflector is in the air guide position, the deflector is located below the indoor unit and is in a horizontal state.

3. The indoor unit of the air conditioner according to claim 1, characterized in that: When the deflector is in the closed state, the deflector forms an angle ω0 with the horizontal direction, and when the deflector is in the intermediate position, the deflector forms an angle ω1 with the horizontal direction, wherein ω0>ω1.

4. The indoor unit of the air conditioner according to claim 3, characterized in that: When the deflector moves from the closed state to the intermediate position, the first arc-shaped rack and the second arc-shaped rack rotate by an angle ω4, wherein ω4=ω0-ω1.

5. The indoor unit of the air conditioner according to claim 1, characterized in that: The number of gears is one.

6. The indoor unit of the air conditioner according to claim 5, characterized in that: The width of the gear is greater than the width of the second arc-shaped rack.

7. The indoor unit of the air conditioner according to any one of claims 1 to 6, characterized in that: The first arc-shaped rack and the second arc-shaped rack are slidingly connected and arranged side by side along the length direction of the deflector.

8. The indoor unit of the air conditioner according to claim 1, characterized in that: The first arc-shaped rack comprises a first tooth part, and the second arc-shaped rack comprises a second tooth part, and the effective length of the first tooth part is less than the effective length of the second tooth part.

9. The indoor unit of the air conditioner according to claim 8, characterized in that: The first arc-shaped rack further comprises a toothless part, the starting end of the toothless part is connected to the end of the first tooth part, and the first tooth part is arranged close to the deflector; The effective length of the toothless part is greater than or equal to the effective length of the first tooth part.

10. The air conditioner indoor unit according to claim 1, characterized in that: The second arc-shaped rack comprises: A bending section arranged at one end of the second arc-shaped rack close to the air outlet; and A A second connecting shaft is arranged at the free end of the bending section, and is used for sliding connection with the air deflector.

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