Air conditioner

Abstract

The utility model discloses an air conditioner which comprises a machine shell, an air duct component and an inner air inlet grille. A first air inlet is formed in the machine shell, the air duct component is arranged in the machine shell and comprises an air duct volute and an air wheel arranged in the air duct volute, the air duct volute is provided with an airflow inlet and an airflow outlet, an air inlet cavity is defined between the machine shell and the air duct component, and the air inlet cavity communicates with the first air inlet and the airflow inlet; the inner air inlet grille is arranged in the air inlet cavity and used for guiding airflow to the airflow inlet. According to the air conditioner provided by the embodiment of the utility model, the inner air inlet grille is arranged in the air inlet cavity, so that airflow entering the air inlet cavity through the first air inlet can be guided, and the airflow entering the air inlet cavity can be guided to the airflow inlet by the inner air inlet grille; flow loss in the process that airflow flows to the airflow inlet of the air duct component from the first air inlet can be reduced, and the air inlet amount can be increased.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to an air conditioner. Background Art

[0002] In the related art, an air inlet grille is provided at the air inlet of the air conditioner. When the air conditioner is working, the air duct component of the air conditioner drives the air flow to enter the air conditioner casing through the air inlet. The air flow entering the casing enters the air duct component through the air inlet of the air duct component, flows through the air duct component, and then flows out through the air outlet of the air duct component. However, due to the structural limitation of the air inlet grille, the flow loss is relatively large in the process of the air flow flowing from the air inlet to the air inlet of the air duct component, which is not conducive to increasing the air intake volume. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide an air conditioner, which can guide the airflow entering the air inlet cavity through the first air inlet by arranging an inner air inlet grille in the air inlet cavity, and the airflow entering the air inlet cavity can be guided to the airflow inlet under the guidance of the inner air inlet grille, which can reduce the flow loss of the airflow in the process of flowing from the first air inlet to the airflow inlet of the air duct component, which is conducive to increasing the air intake.

[0004] The air conditioner according to the embodiment of the utility model includes: a casing, which is formed with a first air inlet; an air duct component, which is arranged in the casing and includes an air duct volute and a wind wheel arranged in the air duct volute, the air duct volute has an air flow inlet and an air flow outlet, and an air inlet cavity is defined between the casing and the air duct component, and the air inlet cavity connects the first air inlet and the air flow inlet; an inner air inlet grille, which is arranged in the air inlet cavity and is used to guide the air flow to the air flow inlet.

[0005] According to the air conditioner of the embodiment of the utility model, by arranging an inner air inlet grille in the air inlet cavity, a guiding effect can be played on the airflow entering the air inlet cavity through the first air inlet. The airflow entering the air inlet cavity can be guided to the airflow inlet under the guidance of the inner air inlet grille, which can reduce the flow loss of the airflow in the process of flowing from the first air inlet to the airflow inlet of the air duct component, which is beneficial to increase the air intake volume.

[0006] According to some embodiments of the present invention, the plane where the first air inlet is located is the first air inlet plane, the plane where the airflow inlet is located is the second air inlet plane, and there is an angle between the second air inlet plane and the first air inlet plane.

[0007] According to some embodiments of the utility model, the inner air inlet grille includes a plurality of first grille ribs arranged at intervals, a first airflow channel is defined between adjacent first grille ribs, a wall surface of the first grille ribs facing the first airflow channel is formed as a guide surface, and an angle is formed between the guide surface and the first air inlet plane and the second air inlet plane.

[0008] According to some embodiments of the present invention, the angle between the first air inlet plane and the second air inlet plane is a first preset angle, the angle between the guide surface and the second air inlet plane is a second preset angle, and the ratio of the second preset angle to the first preset angle is in the range of 1 / 3 to 2 / 3.

[0009] According to some embodiments of the present invention, the first air inlet is formed on the left side of the casing and / or the right side of the casing, and the air flow inlet is formed on the front side of the air duct volute and is located on the rear side of the air inlet cavity.

[0010] According to some embodiments of the present invention, the inner air inlet grille is detachably connected to the casing.

[0011] According to some embodiments of the utility model, one of the inner air inlet grille and the housing is provided with a hook and the other is provided with a hole that cooperates with the hook.

[0012] According to some embodiments of the utility model, the casing includes an air inlet frame, the first air inlet is formed on the side wall of the air inlet frame and extends in the up-down direction, the air inlet cavity is defined between the air inlet frame and the air duct component, the inner air inlet grille is installed in the air inlet frame and extends in the up-down direction, the clamping holes are provided at both ends of the inner air inlet grille in the width direction, and the clamping hook is provided on the air inlet frame.

[0013] According to some embodiments of the present invention, the hook portion of the hook extends upward, and the inner air inlet grille can be installed on the air inlet frame or removed from the air inlet frame along the up and down direction.

[0014] According to some embodiments of the utility model, a flange structure extending toward the inner side of the air inlet frame is formed on the top of the air inlet frame, and the upper edge of the inner air inlet grille includes a first upper edge, which is located below the flange structure and is spaced a first distance apart from the flange structure in the up and down directions, and the bottom surface of the hook is spaced a second distance apart from the bottom wall of the hole in the up and down directions, and the first distance is greater than the second distance.

[0015] According to some embodiments of the present invention, a reinforcing flange is formed on at least one end of the inner air inlet grille along the width direction.

[0016] According to some embodiments of the present invention, there is a gap between the bottom surface of the inner air inlet grille and the inner bottom wall of the air inlet frame.

[0017] According to some embodiments of the utility model, a first connecting hole is formed on the inner air inlet grille, a second connecting hole is formed on the air inlet frame, and fasteners are passed through the first connecting hole and the second connecting hole; reinforcing ribs are formed on the inner air inlet grille, and the reinforcing ribs surround the outer peripheral side of the first connecting hole.

[0018] According to some embodiments of the utility model, an air guide cavity is defined between the inner air inlet grille and the air inlet frame, and the first air inlet is formed on the side wall of the air guide cavity; a matching flange is formed on the top of the inner air inlet grille, and the matching flange abuts and seals with the air inlet frame.

[0019] According to some embodiments of the utility model, the casing includes an air inlet frame, the first air inlet is formed on the side wall of the air inlet frame and extends in the up-down direction, the air inlet cavity is defined between the air inlet frame and the air duct component, the inner air inlet grille is installed in the air inlet frame and extends in the up-down direction; a second air inlet is formed on the bottom wall of the air inlet frame, a lower filter for covering the second air inlet is installed on the bottom wall of the air inlet frame, and a gap is provided between the bottom surface of the inner air inlet grille and the bottom wall of the air inlet frame, and the gap is used to avoid the lower filter.

[0020] According to some embodiments of the present invention, the lower filter can be installed in the air inlet frame through the first air inlet or can be taken out from the air inlet frame through the first air inlet.

[0021] According to some embodiments of the utility model, the lower end of the inner air inlet grille is recessed in a direction away from the first air inlet to form an escape space, and the escape space is used to avoid deformation occurring during the disassembly and assembly of the lower filter.

[0022] According to some embodiments of the present invention, the air conditioner includes an external air inlet grille, and the external air inlet grille is detachably arranged at the first air inlet.

[0023] According to some embodiments of the present utility model, the inner air intake grille includes a plurality of first grille ribs arranged at intervals, and a first airflow channel is defined between adjacent first grille ribs; the outer air intake grille includes a plurality of second grille ribs arranged at intervals, and a second airflow channel is defined between adjacent second grille ribs, the projection of the second grille ribs on a reference plane at least partially overlaps with the projection of the first grille ribs on the reference plane, the projection of the second airflow channel on the reference plane at least partially overlaps with the projection of the first airflow channel on the reference plane, and the reference plane is parallel to the plane where the first air inlet is located.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 is a front view of an air conditioner indoor unit of an air conditioner according to some embodiments of the utility model;

[0027] Figure 2 yes Figure 1 The enlarged view of A in FIG.

[0028] Figure 3 yes Figure 1 A side view of an indoor unit of an air conditioner;

[0029] Figure 4 yes Figure 1 A side view of the indoor unit of the air conditioner from another angle;

[0030] Figure 5 yes Figure 1 The rear view of the indoor unit of the air conditioner;

[0031] Figure 6 yes Figure 1 Exploded view of the indoor unit of the air conditioner;

[0032] Figure 7 yes Figure 6 A three-dimensional schematic diagram of an air inlet frame assembly of an indoor unit of an air conditioner;

[0033] Figure 8 yes Figure 7 An exploded view of the air inlet frame assembly in FIG.

[0034] Fig. 9 yes Figure 8 The front view of the assembly of the air inlet frame and the inner air inlet grille;

[0035] Fig.10 yes Figure 8 A side view of the assembly of the air inlet frame and the outer air inlet grille;

[0036] Fig.11 yes Figure 8 A side view of the assembly of the air inlet frame and the outer air inlet grille at another angle;

[0037] Fig.12 yes Figure 8 A top view of the assembly of the air inlet frame, the inner air inlet grille and the outer air inlet grille;

[0038] Fig.13 yes Figure 8 Another angle top view of the assembly of the air inlet frame, the inner air inlet grille and the outer air inlet grille

[0039] Fig.14 yes Figure 8 Schematic diagram of assembly of the air inlet frame and the inner air inlet grille;

[0040] Fig.15 yes Fig.14 The enlarged view of point B in FIG.

[0041] Fig.16 yes Figure 8 A three-dimensional schematic diagram of the inner air intake grille in FIG.

[0042] Fig.17 yes Figure 8 A three-dimensional schematic diagram of the inner air intake grille from another angle;

[0043] Fig.18 yes Figure 8 A schematic diagram of the assembly of the air inlet frame and the inner air inlet grille at another angle;

[0044] Fig.19 yes Fig.18 A magnified view of the local structure in

[0045] Fig. 20 yes Figure 8 A top view of the assembly of the air inlet frame and the inner air inlet grille;

[0046] Fig.21 yes Figure 8 A three-dimensional schematic diagram of the assembly of the air inlet frame and the inner air inlet grille;

[0047] Fig. 22 yes Figure 7 An assembly diagram of the air inlet frame assembly;

[0048] Fig.23 yes Figure 7 A schematic diagram of the assembly of the air inlet frame assembly from another angle;

[0049] Fig.24 yes Figure 8 Schematic diagram of assembly of the lower filter, air inlet frame and inner air inlet grille;

[0050] Fig.25 yes Fig.24 Enlarged view of point C in FIG.

[0051] Reference numerals:

[0052] 100. Air conditioner indoor unit;

[0053] 1. Casing; 1a. Air inlet frame assembly; 11. Air inlet frame; 111. Hook; 112. Hook portion; 113. Flanging structure; 114. Inner bottom wall; 12. First air inlet; 120. First air inlet plane; 121. Second air inlet plane; 13. Air inlet cavity; 15. Second connecting hole; 16. Air guide cavity; 17. Second air inlet; 18. Position limiting structure;

[0054] 2. Inner air inlet grille; 21. First grille rib; 211. First airflow channel; 212. Guide surface; 22. Clamp hole; 23. Strengthening flange; 24. First connecting hole; 25. Upper edge; 251. First upper edge; 26. Strengthening rib; 27. Matching flange; 28. Avoidance space;

[0055] 3a, heat exchange and air supply assembly; 3, air duct component; 31, air flow inlet; 32, air duct volute; 33, wind wheel; 4, heat exchanger component; 41, fastener; 42, lower filter; 43, gap;

[0056] 5. External air inlet grille; 51. Second grille rib; 52. Second air flow channel;

[0057] 6. front shell component; 61. air outlet frame assembly; 611. air outlet frame; 612. air outlet; 613. air guide plate;

[0058] 7. rear shell component; 71. side panel; 72. back panel; 9. top cover; 10. base; 101. air inlet notch. DETAILED DESCRIPTION

[0059] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0060] Reference below Figure 1-Figure 25 An air conditioner according to an embodiment of the present utility model is described.

[0061] Reference Figure 7 and Figure 8According to an embodiment of the utility model, the air conditioner comprises a casing 1, an air duct component 3 and an inner air inlet grille 2. The casing 1 is formed with a first air inlet 12, the air duct component 3 is arranged in the casing 1, the air duct component 3 comprises an air duct volute 32 and a wind wheel 33, the wind wheel 33 is arranged in the air duct volute 32, the air duct volute 32 has an air flow inlet 31 and an air flow outlet, an air inlet cavity 13 is defined between the casing 1 and the air duct component 3, and the air inlet cavity 13 communicates with the first air inlet 12 and the air flow inlet 31. When the wind wheel 33 is running, the wind wheel 33 can drive the indoor air to enter the air inlet cavity 13 through the first air inlet 12, and then flow into the air flow inlet 31, and finally blow out from the air flow outlet.

[0062] The inner air inlet grille 2 is arranged in the air inlet cavity 13, and the inner air inlet grille 2 can be adjacent to the first air inlet 12 and at least partially arranged opposite to the first air inlet 12. The inner air inlet grille 2 is used to guide the airflow to the airflow inlet 31. In the process of the airflow flowing from the first air inlet 12 to the airflow inlet 31 of the air duct component 3, and in the process of the airflow flowing through the inner air inlet grille 2, the inner air inlet grille 2 can guide the airflow entering the air inlet cavity 13, and can quickly guide the airflow entering the air inlet cavity 13 to the airflow inlet 31, and can reduce the flow loss of the airflow in the process of the airflow flowing from the first air inlet 12 to the airflow inlet 31 of the air duct component 3, which is conducive to increasing the air intake.

[0063] According to the air conditioner of the embodiment of the utility model, by setting an inner air inlet grille 2 in the air inlet cavity 13, a guiding effect can be played on the airflow entering the air inlet cavity 13 through the first air inlet port 12. The airflow entering the air inlet cavity 13 can be guided to the airflow inlet 31 under the guidance of the inner air inlet grille 2, which can reduce the flow loss of the airflow in the process of flowing from the first air inlet port 12 to the airflow inlet 31 of the air duct component 3, which is beneficial to increase the air intake volume.

[0064] Reference Fig.12 and Fig.13 According to some embodiments of the utility model, the plane where the first air inlet 12 is located is the first air inlet plane 120, the plane where the airflow inlet 31 is located is the second air inlet plane 121, and there is an angle between the second air inlet plane 121 and the first air inlet plane 120. The angle between the second air inlet plane 121 and the first air inlet plane 120 means that the angle α between the second air inlet plane 121 and the first air inlet plane 120 is greater than zero. When there is an angle between the first air inlet 12 on the housing 1 and the plane where the airflow inlet 31 of the air duct component 3 is located, the airflow entering the air inlet cavity 13 through the first air inlet 12 changes its flow direction during the flow process and then flows to the airflow inlet 31. By providing an inner air inlet grille 2 with a flow-guiding function in the air inlet cavity 13, the airflow can flow to the airflow inlet 31 more smoothly, reduce flow losses, and help increase the air intake.

[0065] For example, in some embodiments of the present invention, refer to Figure 1 and Figure 6 The air conditioner is a split-type floor-standing air conditioner. The air conditioner may include an air-conditioning indoor unit 100 and an air-conditioning outdoor unit. The casing 1 of the air-conditioning indoor unit 100 includes a front casing component 6, a rear casing component 7, a top cover 9 and a base 10. The front casing component 6 and the rear casing component 7 are both arranged on the base 10. The front casing component 6 is connected to the rear casing component 7 and the front casing component 6 is connected to the front side of the rear casing component 7. The top cover 9 is arranged on the top of the front casing component 6 and the rear casing component 7.

[0066] The front shell component 6 includes an air outlet frame assembly 61 and an air inlet frame assembly 1a. The air outlet frame assembly 61 is arranged above the air inlet frame assembly 1a and connected to the air inlet frame assembly 1a. The air outlet frame assembly 61 includes an air outlet frame 611 and an air guide plate 613. The front side of the air outlet frame 611 is formed with an air outlet 612. The air guide plate 613 is rotatably arranged at the air outlet 612. The air inlet frame assembly 1a includes an air inlet frame 11 and an outer air inlet grille 5. The left and right sides of the air inlet frame 11 are formed with a first air inlet 12. The bottom of the air inlet frame 11 is also formed with a second air inlet 17. The outer air inlet grille 5 is installed at the first air inlet 12. The air inlet frame 11 is also provided with an inner air inlet grille 2. The inner air inlet grille 2 is adjacent to the first air inlet 12 and is arranged substantially opposite to the first air inlet 12. At least part of the air inlet cavity 13 is defined in the air inlet frame 11. The inner air inlet grille 2 is located in the air inlet cavity 13.

[0067] An air inlet notch 101 extending in the left-right direction is formed at the front end of the base 10. The air inlet notch 101 is located below the second air inlet 17. The second air inlet 17 is formed on the bottom wall of the air inlet frame 11 and is covered with a lower filter 42. The lower filter 42 is detachably arranged at the air inlet frame 11 and can be installed or removed from the bottom of the air inlet frame 11.

[0068] The rear shell component 7 includes a side panel 71 and a back panel 72 . There are two side panels 71 . The two side panels 71 are respectively connected to the left and right ends of the back panel 72 and to the front side of the back panel 72 . The air outlet frame 611 and the air inlet frame 11 are both connected to the front ends of the two side panels 71 .

[0069] The heat exchange and air supply assembly 3a is arranged in the housing 1, and the heat exchange and air supply assembly 3a includes a heat exchanger component 4 and an air duct component 3. The heat exchanger component 4 is arranged in the housing 1 and is located above the air duct component 3. The air duct component 3 includes an air duct volute 32 and a wind wheel 33 arranged in the air duct volute 32. The air duct volute 32 is formed with an air flow inlet 31 and an air flow outlet. The air flow inlet 31 is formed at the front side of the air duct volute 32 and is located at the rear side of the air inlet cavity 13, and the air flow outlet is formed at the rear side of the heat exchanger component 4. The plane where the first air inlet 12 is located is the first air inlet plane 120, and the plane where the air flow inlet 31 is located is the second air inlet plane 121. Since the air flow inlet 31 is formed at the front side of the air duct volute 32 and is located at the rear side of the air inlet cavity 13, there is an angle α between the second air inlet plane 121 and the first air inlet plane 120, and the angle α>0°.

[0070] When the air-conditioning indoor unit 100 is working, the wind wheel 33 drives the air flow to enter from the first air inlet 12 and the second air inlet 17 respectively. After the air flow of the first air inlet 12 and the second air inlet 17 is filtered by the filter and the lower filter 42 respectively, the filtered air flow flows into the air duct volute 32 through the air flow inlet 31, and the wind wheel 33 drives the air flow to flow to the heat exchanger component 4 through the air flow outlet. The air flow exchanges heat when flowing through the heat exchanger component 4. After the heat exchange, the air flow passes through the air outlet frame 611 and is blown into the room through the air outlet 612 to heat up or cool down the room.

[0071] The filtered airflow from the first air inlet 12 is guided by the inner air inlet grille 2 , thereby increasing the amount of airflow from the first air inlet plane 120 to the airflow inlet 31 .

[0072] Reference Fig.14 According to some embodiments of the utility model, the inner air inlet grille 2 includes a plurality of first grille ribs 21 arranged at intervals, and a first air flow channel 211 is defined between adjacent first grille ribs 21. The wall surface of the first grille ribs 21 facing the first air flow channel 211 is formed as a guide surface 212, and the guide surface 212 has an angle with the first air inlet plane 120 and the second air inlet plane 121. For example, the angle β between the guide surface 212 and the first air inlet plane 120, the angle γ between the guide surface 212 and the second air inlet plane 121, and the angle β and the angle γ are both greater than zero, which can ensure that there is a certain angle between the guide surface 212 and the first air inlet plane 120 and the second air inlet plane 121, and ensure that the guide surface 212 has a guiding effect on the air flow in the air inlet cavity 13, and can guide the air flow to the air flow inlet 31, thereby effectively increasing the air flow entering the air flow inlet 31.

[0073] In the process of the airflow entering the air inlet cavity 13 through the first air inlet port 12 and flowing through the inner air inlet grille 2, the airflow flows through the inner air inlet grille 2 through the first airflow channel 211 of the inner air inlet grille 2. In the process of the airflow flowing through the first airflow channel 211 of the inner air inlet grille 2, the multiple guide surfaces 212 of the multiple first airflow channels 211 can guide the flow direction of the airflow entering the air inlet cavity 13, so that more airflow is guided to the airflow inlet 31 of the air duct component 3, thereby reducing the flow loss of the airflow and effectively increasing the airflow amount entering the airflow inlet 31.

[0074] In the description of the present invention, "plurality" means two or more.

[0075] Reference Fig.12 According to some embodiments of the utility model, the angle between the first air inlet plane 120 and the second air inlet plane 121 is the first preset angle α, the angle between the guide surface 212 and the second air inlet plane 121 is the second preset angle γ, and the ratio of the second preset angle γ to the first preset angle α ranges from 1 / 3 to 2 / 3. For example, the ratio of the second preset angle γ to the first preset angle α can be 2 / 5, 7 / 15, 8 / 15, 3 / 5, etc. The first preset angle can range from 67.5° to 135°. For example, the first preset angle is 90°, and the second preset angle can range from 30° to 60°; for example, the second preset angle is 45°.

[0076] By setting the ratio range of the second preset angle γ to the first preset angle α to be greater than 1 / 3, the change in flow direction can be smaller during the process of the airflow flowing from the first air inlet 12 into the air inlet cavity 13 and flowing through the guide surface 212, thereby reducing flow losses; by setting the ratio range of the second preset angle γ to the first preset angle α to be less than 2 / 3, the change in flow direction can be smaller during the process of the airflow flowing from the guide surface 212 to the airflow inlet 31, thereby reducing flow losses.

[0077] By setting the ratio of the second preset angle γ to the first preset angle α in the range of 1 / 3 to 2 / 3, the guiding effect of the guide surface 212 can be effectively achieved, and in the process of the airflow flowing from the first air inlet 12 to the airflow inlet 31 of the air duct component 3, the change in the flow direction of the airflow is relatively small. For example, when the angle between the first air inlet surface and the second air inlet surface is 90°, when the above-mentioned inner air inlet grille 2 is not set, the airflow changes direction by 90° in the process of flowing from the first air inlet 12 to the airflow inlet 31. By setting the above-mentioned inner air inlet grille 2 and making the ratio of the second preset angle γ to the first preset angle α in the range of 1 / 3 to 2 / 3, the change in the flow direction of the airflow can be divided into two times, so that the angle change of the flow direction each time is small. For example, the two changes in the flow direction can be made to be approximately 45°, so as to better reduce the flow loss and effectively improve the airflow in the air inlet cavity 13 that is guided to the airflow inlet 31 through the guide surface 212.

[0078] Reference Figure 7 and Fig.21 According to some embodiments of the utility model, the first air inlet 12 is formed on the left side of the casing 1, and the air flow inlet 31 is formed on the front side of the air duct volute 32. The air flow inlet 31 is located on the rear side of the air inlet cavity 13. The air can enter the air inlet cavity 13 through the left side of the casing 1. In the process of flowing through the inner air inlet grille 2, the air flow is guided by the inner air inlet grille 2 so that the air flow gradually flows backward to the air flow inlet 31, thereby reducing the flow loss and facilitating increasing the air intake volume.

[0079] Reference Figure 7 and Fig.21 According to some embodiments of the utility model, the first air inlet 12 is formed on the right side of the casing 1, the air flow inlet 31 is formed on the front side of the air duct volute 32, and the air flow inlet 31 is located on the rear side of the air inlet cavity 13. The air can enter the air inlet cavity 13 through the right side of the casing 1. In the process of flowing through the inner air inlet grille 2, the air flow is guided by the inner air inlet grille 2 so that the air flow gradually flows backward to the air flow inlet 31, thereby reducing the flow loss and facilitating increasing the air intake volume.

[0080] Reference Figure 7 and Fig.21 According to some embodiments of the utility model, the first air inlet 12 is formed on the left side and the right side of the casing 1, the air flow inlet 31 is formed on the front side of the air duct volute 32, and the air flow inlet 31 is located on the rear side of the air inlet cavity 13. The air can enter the air inlet cavity 13 through the left side and the right side of the casing 1. In the process of flowing through the inner air inlet grille 2, the air flow is guided by the inner air inlet grille 2 so that the air flow gradually flows backward to the air flow inlet 31, thereby reducing the flow loss and facilitating the increase of the air intake volume.

[0081] Reference Fig.14 According to some embodiments of the utility model, the inner air intake grille 2 is detachably connected to the casing 1, which can facilitate maintenance or replacement of the inner air intake grille 2; and the difficulty of manufacturing the casing 1 and the inner air intake grille 2 and the production cost of the mold can be reduced.

[0082] Reference Fig.19 According to some embodiments of the utility model, one of the inner air intake grille 2 and the housing 1 is provided with a hook 111 and the other is provided with a hole 22 that matches the hook 111. For example, the inner air intake grille 2 is provided with a hook 111, and the housing 1 is provided with a hole 22 that matches the hook 111; or, the housing 1 is provided with a hook 111, and the inner air intake grille 2 is provided with a hole 22 that matches the hook 111. When the inner air intake grille 2 is assembled with the housing 1, the hook 111 is inserted into the hole 22, so that the inner air intake grille 2 can be installed on the housing 1. The hook 111 and the hole 22 are connected by snapping, so that the connection between the inner air intake grille 2 and the housing 1 is simple and has strong stability, which facilitates the removal or installation of the inner air intake grille 2 on the housing 1, and can improve the removal or installation speed of the inner air intake grille 2 on the housing 1.

[0083] For example, when the casing 1 includes the above-mentioned air inlet frame 11, a hook 111 is provided on one of the inner air inlet grille 2 and the air inlet frame 11 and a hole 22 is provided on the other. The installation process of the inner air inlet grille 2 on the casing 1 can be completed by the snap connection between the hook 111 and the hole 22; the disassembly process of the inner air inlet grille 2 on the casing 1 can be completed by releasing the cooperation between the hook 111 and the hole 22.

[0084] Reference Fig.18 and Fig.19 According to some embodiments of the utility model, the housing 1 includes an air inlet frame 11, a first air inlet 12 is formed on a side wall of the air inlet frame 11, the first air inlet 12 extends in the up-down direction, an air inlet cavity 13 is defined between the air inlet frame 11 and the air duct component 3, and an inner air inlet grille 2 is installed in the air inlet frame 11, and the inner air inlet grille 2 extends in the up-down direction. Among them, both ends of the inner air inlet grille 2 in the width direction are provided with a clamping hole 22, and a corresponding position on the air inlet frame 11 is provided with a clamping hook 111. The clamping hook 111 and the clamping hole 22 are clamped and connected, so that both ends of the inner air inlet grille 2 in the width direction are connected to the air inlet frame 11.

[0085] For example, both ends of the inner air intake grille 2 in the width direction are provided with a plurality of latch holes 22, and the plurality of latch holes 22 located at the same end of the inner air intake grille 2 in the width direction are arranged at intervals in the up-down direction, and a plurality of latch hooks 111 arranged at intervals in the up-down direction are formed at positions corresponding to the same end of the inner air intake grille 2 in the width direction on the air intake frame 11, and the plurality of latch hooks 111 are respectively inserted into the plurality of latch holes 22, which can improve the stability of the connection between the inner air intake grille 2 and the air intake frame 11.

[0086] For example, when installing the inner air intake grille 2, the engagement between the hook 111 and the engagement hole 22 can complete the assembly of the two ends of the inner air intake grille 2 in the width direction on the air intake frame 11; when disassembling the inner air intake grille 2, the engagement between the hook 111 and the engagement hole 22 can be released to complete the disassembly of the two ends of the inner air intake grille 2 in the width direction on the air intake frame 11. Fig.19 According to some embodiments of the present invention, the hook portion 112 of the hook 111 extends upward. The hook portion 112 of the hook 111 extends upward, which can form a hook force on the hook hole 22, and the hook 111 has an upward supporting force on the inner air intake grille 2, so that the connection between the inner air intake grille 2 and the air intake frame 11 has a strong stability.

[0087] The inner air intake grille 2 can be installed to or removed from the air intake frame 11 in the up-down direction. When installing the inner air intake grille 2, the inner air intake grille 2 can be installed in the air intake frame 11 from top to bottom. When the hook 111 on the air intake frame 11 is inserted into the hook hole 22 of the inner air intake grille 2, the inner air intake grille 2 cannot move downward further under the limitation and support of the hook 111. At this time, the inner air intake grille 2 is installed in place. When removing the inner air intake grille 2, the inner air intake grille 2 can be moved upward until the hook hole 22 on the inner air intake grille 2 is disengaged from the hook 111 on the air intake frame 11. At this time, the inner air intake grille 2 can be removed from the air intake frame 11 and taken out.

[0088] Reference Fig.19According to some embodiments of the utility model, a flange structure 113 extending toward the inner side of the air inlet frame 11 is formed at the top of the air inlet frame 11, and the upper edge 25 of the inner air inlet grille 2 includes a first upper edge 251, and the first upper edge 251 is located below the flange structure 113. The distance between the first upper edge 251 and the flange structure 113 in the vertical direction is a first distance, and the distance between the bottom surface of the hook 111 and the bottom wall of the clamping hole 22 in the vertical direction is a second distance, and the first distance is greater than the second distance. The flange structure 113 can enhance the structural strength of the top of the air inlet frame 11. The first distance w1 is greater than the second distance w2, which can ensure that the inner air inlet grille 2 can be removed from the air inlet frame 11. When the inner air intake grille 2 needs to be removed, by making the first spacing w2 larger than the second spacing w2, sufficient space can be reserved for the upward movement of the inner air intake grille 2 during the upward movement of the inner air intake grille 2, thereby ensuring that the card hole 22 on the inner air intake grille 2 can be separated from the card connection of the card hook 111, thereby allowing the inner air intake grille 2 to be smoothly removed from the air intake frame 11.

[0089] Reference Fig.18 According to some embodiments of the present invention, at least one end of the inner air intake grille 2 along the width direction is formed with a reinforcing flange 23, for example, one end of the inner air intake grille 2 along the width direction is formed with a reinforcing flange 23 or both ends of the inner air intake grille 2 along the width direction are formed with reinforcing flanges 23. The reinforcing flange 23 can improve the overall structural strength of the inner air intake grille 2 to a certain extent and reduce deformation.

[0090] For example, both ends of the inner air inlet grille 2 in the width direction are connected to the air inlet frame 11, and at least one end of the inner air inlet grille 2 along the width direction is formed with a reinforced flange 23, and the reinforced flange 23 is connected to the air inlet frame 11 and sealed with the air inlet frame 11, which can improve the sealing effect between the inner air inlet grille 2 and the air inlet frame 11, and can avoid or reduce the airflow entering the air inlet cavity 13 from leaking out from the fitting point between the inner air inlet grille 2 and the air inlet frame 11, thereby further increasing the airflow at the airflow inlet 31.

[0091] Reference Fig.18 and Fig.25 According to some embodiments of the utility model, there is a gap 43 between the bottom surface of the inner air inlet grille 2 and the inner bottom wall 114 of the air inlet frame 11, which can leave a certain assembly error for the installation of the inner air inlet grille 2 on the casing 1, and can avoid interference between the bottom surface of the inner air inlet grille 2 and the bottom wall of the air inlet frame 11, so that the disassembly and assembly process of the inner air inlet grille 2 is smooth.

[0092] Reference Fig.14 and Fig.15According to some embodiments of the utility model, a first connection hole 24 is formed on the inner air intake grille 2, a second connection hole 15 is formed on the air intake frame 11, and a fastener 41 is inserted through the first connection hole 24 and the second connection hole 15. On the basis of the inner air intake grille 2 and the air intake frame 11 being connected by the hook 111 and the clamping hole 22, by inserting the fastener 41 through the first connection hole 24 and the second connection hole 15, the reliability and stability of the connection between the inner air intake grille 2 and the air intake frame 11 can be further improved.

[0093] Furthermore, a reinforcing rib 26 is formed on the inner air inlet grille 2, and the reinforcing rib 26 surrounds the outer peripheral side of the first connecting hole 24. The reinforcing rib 26 can enhance the structural strength of the outer peripheral side of the first connecting hole 24, and can prevent the fastener 41 from sinking due to insufficient structural strength of the first connecting hole 24 when the fastener 41 is inserted into the first connecting hole 24.

[0094] Reference Fig.16 and Fig.21 According to some embodiments of the present invention, an air guide cavity 16 is defined between the inner air inlet grille 2 and the air inlet frame 11, the air guide cavity 16 constitutes a part of the air inlet cavity 13, and the first air inlet 12 is formed on the side wall of the air guide cavity 16. The airflow enters the air guide cavity 16 through the first air inlet 12, and then can flow to the airflow inlet 31 through the guiding effect of the inner air inlet grille 2.

[0095] Furthermore, a matching flange 27 is formed at the top of the inner air inlet grille 2, and the matching flange 27 is abutted and sealed with the air inlet frame 11. The matching flange 27 can improve the overall structural strength of the inner air inlet grille 2 to a certain extent. The abutting connection between the matching flange 27 and the air inlet frame 11 can facilitate the disassembly of the top of the inner air inlet grille 2 and the air inlet frame 11, and the abutting and sealing between the matching flange 27 and the air inlet frame 11 can improve the sealing match between the inner air inlet grille 2 and the air inlet frame 11.

[0096] By cooperating with the abutment seal between the flange 27 and the air inlet frame 11, the airflow entering the air guide cavity 16 can be prevented or reduced from leaking out from the top of the inner air inlet grille 2 and the air inlet frame 11, thereby further improving the airflow entering the airflow inlet 31 through the air guide cavity 16.

[0097] Reference Figure 8 and Fig.24According to some embodiments of the utility model, the housing 1 includes an air inlet frame 11, a first air inlet 12 is formed on a side wall of the air inlet frame 11, for example, the first air inlet 12 can be formed on at least one of the left wall and the right wall of the air inlet frame 11, the first air inlet 12 extends in the up-down direction, an air inlet cavity 13 is defined between the air inlet frame 11 and the air duct component 3, an inner air inlet grille 2 is installed in the air inlet frame 11, the inner air inlet grille 2 extends in the up-down direction, and a second air inlet 17 is formed on the bottom wall of the air inlet frame 11. By forming the first air inlet 12 on the side wall of the air inlet frame 11 and forming the second air inlet 17 on the bottom wall of the air inlet frame 11, the air inlet area can be increased, so that air enters from different directions of the housing 1, and the air intake volume is increased.

[0098] Among them, the bottom wall of the air inlet frame 11 is installed with a lower filter 42 for covering the second air inlet 17. The second air inlet 17 is covered with the lower filter 42, which can filter dust and other impurities in the air flow entering from the second air inlet 17, thereby improving the air quality.

[0099] Further, there is a gap 43 between the bottom surface of the inner air inlet grille 2 and the bottom wall of the air inlet frame 11, and the gap 43 between the bottom surface of the inner air inlet grille 2 and the bottom wall of the air inlet frame 11 can be used to avoid the lower filter 42. The lower filter 42 is located at the bottom wall of the air inlet frame 11, and there is a gap 43 between the bottom surface of the inner air inlet grille 2 and the bottom wall of the air inlet frame 11, which can form an installation avoidance for the lower filter 42, so that the lower filter 42 can be accommodated between the bottom surface of the inner air inlet grille 2 and the bottom wall of the air inlet frame 11, and then the airflow entering from the second air inlet 17 can be filtered. There is a gap 43 between the bottom surface of the inner air inlet grille 2 and the bottom wall of the air inlet frame 11, and the gap 43 can form an installation avoidance for the lower filter 42, which is convenient for the removal or installation of the lower filter 42.

[0100] Reference Fig.24 According to some embodiments of the present invention, the lower filter 42 can be installed into the air inlet frame 11 through the first air inlet 12 or can be taken out from the air inlet frame 11 through the first air inlet 12. The lower filter 42 is detachably arranged at the bottom wall of the air inlet frame 11 of the housing 1, and the lower filter 42 is installed into the air inlet frame 11 through the first air inlet 12 or taken out from the air inlet frame 11, which is convenient for installation or removal of the lower filter 42, and convenient for maintenance and replacement of the lower filter 42.

[0101] For example, when installing the lower filter 42, the lower filter 42 is installed into the air inlet frame 11 from the first air inlet 12; when removing the lower filter 42, the lower filter 42 is removed from the air inlet frame 11 from the first air inlet 12. By using at least a portion of the first air inlet 12 as a disassembly opening of the lower filter 42, it is convenient to take the lower filter 42 out of the side of the housing 1 or install it into the housing 1, making it more convenient to disassemble and assemble the lower filter 42, and it is possible to omit an additional disassembly opening separately provided for disassembly and assembly of the lower filter 42.

[0102] Reference Fig.18 and Fig.24 According to some embodiments of the utility model, the lower end of the inner air inlet grille 2 is recessed in a direction away from the first air inlet 12 to form an escape space 28. The escape space 28 formed at the lower end of the inner air inlet grille 2 is used to avoid deformation of the lower filter 42 during the disassembly process. The escape space 28 can form a certain escape for the disassembly of the lower filter 42, avoid interference between the lower filter 42 and the inner air inlet grille 2 during the disassembly process of the lower filter 42, and facilitate the disassembly of the lower filter 42.

[0103] For example, when removing or installing the lower filter 42, at least a portion of the lower filter 42 close to the first air inlet 12 will arch in a direction toward the bottom wall away from the air inlet frame 11 and produce a certain deformation, so that the length of the lower filter 42 in the left-right direction will be shortened, which can facilitate the removal or installation of the lower filter 42.

[0104] By recessing the lower end of the inner air inlet grille 2 in a direction away from the first air inlet port 12 to form an escape space 28, it can be ensured that the arched and deformed portion of the lower filter 42 close to the first air inlet port 12 can be accommodated in the escape space 28 formed at the lower end of the inner air inlet grille 2, thereby facilitating the removal or installation of the lower filter 42.

[0105] Reference Fig. 22 and Fig.23 According to some embodiments of the utility model, the air conditioner includes an outer air inlet grille 5, which is detachably arranged at the first air inlet port 12, so that the outer air inlet grille 5 can be easily maintained or replaced. On the basis that the outer air inlet grille 5 is detachable, by arranging the inner air inlet grille 2 in the air inlet cavity 13, when the outer air inlet grille 5 is removed, since the inner air inlet grille 2 is located in the air inlet cavity 13, it can be prevented that a person puts his hand or the like into the air inlet cavity 13 through the first air inlet port 12, which may cause a safety hazard, and thus the inner air inlet grille 2 can also improve safety.

[0106] According to some optional embodiments of the utility model, a buckle is provided at the bottom of the outer air inlet grille 5, a slot is formed on the bottom wall of the air inlet frame 11, a first positioning member is distributed on the upper side and both ends in the width direction of the outer air inlet grille 5, and a second positioning member is provided on the air inlet frame 11, the first positioning member is a positioning column, and the second positioning member is a positioning sheet. The number of the second positioning members is the same as that of the first positioning members, and they correspond to each other magnetically; and through the plug-in cooperation between the buckle and the slot, the disassembly of the outer air inlet grille 5 can be simplified, and the assembly efficiency of the outer air inlet grille 5 and the air inlet frame 11 can be improved.

[0107] For example, the installation method of the outer air inlet grille 5 on the air inlet frame 11 can be: the buckle of the outer air inlet grille 5 is inserted into the slot on the bottom wall of the air inlet frame 11, and the first positioning member is magnetically connected with the second positioning member to complete the installation process of the outer air inlet grille 5 on the air inlet frame 11.

[0108] Optionally, according to an embodiment of the utility model, a handle structure is provided on the upper part of the outer air inlet grille 5, the handle structure includes a handle portion and a handle cover, the handle portion is integrally formed with the outer air inlet grille 5 and forms a hand-grip cavity, and the hand-grip cavity has an open mouth. The handle portion also includes a handle bracket, the handle bracket is detachably provided on the handle portion, and the handle bracket is snap-connected with the handle portion. The handle cover is movably provided on the handle portion for opening and closing the open mouth, the lower end of the handle cover constitutes a first end, the lower end of the handle cover constitutes a second end, and the first end of the handle cover is rotatably connected to the handle bracket.

[0109] When installing the outer air inlet grille 5, the handle cover can be pushed and rotated by hand so that the second end of the handle cover rotates toward the buckle cavity, which can conveniently realize the opening of the opening, and the user can apply force to the handle structure to insert the buckle of the outer air inlet grille 5 into the slot of the air inlet frame 11 and the second positioning member is magnetically connected to the first positioning member one by one, thereby completing the installation process of the outer air inlet grille 5 on the air inlet frame 11.

[0110] When removing the outer air inlet grille 5, the handle cover can be pushed and rotated by hand so that the second end of the handle cover rotates toward the buckle cavity, which can conveniently realize opening of the open mouth, and the user can apply force to the handle structure to release the magnetic attraction of the second positioning member and the first positioning member one by one, so that the buckle of the outer air inlet grille 5 is disengaged from the slot of the air inlet frame 11, and the disassembly process of the outer air inlet grille 5 on the air inlet frame 11 at the first air inlet 12 is completed.

[0111] Reference Fig. 20 and Fig.21 According to some embodiments of the utility model, the inner air intake grille 2 includes a plurality of first grille ribs 21 arranged at intervals, and a first air flow channel 211 is defined between adjacent first grille ribs 21; the outer air intake grille 5 includes a plurality of second grille ribs 51 arranged at intervals, and a second air flow channel 52 is defined between adjacent second grille ribs 51, and a projection of the second grille ribs 51 on a reference plane at least partially overlaps with a projection of the first grille ribs 21 on the reference plane, and a projection of the second air flow channel 52 on the reference plane at least partially overlaps with a projection of the first air flow channel 211 on the reference plane, and the reference plane is parallel to the plane where the first air inlet 12 is located, which can avoid the possibility of increasing the windshield area due to the misalignment of the second grille ribs 51 and the first grille ribs 21, and the second air flow channel 52 and the first air flow channel 211, thereby reducing the amount of airflow entering through the inner air intake grille 2 and the outer air intake grille 5.

[0112] Refer to the following Figure 1-Figure 25 An air conditioner according to an embodiment of the present invention is described.

[0113] Reference Figure 6 In this embodiment, the air conditioner can be a split floor-standing air conditioner, and the casing 1 of the air conditioner indoor unit 100 includes a front shell component 6, a rear shell component 7, a top cover 9 and a base 10. The front shell component 6 and the rear shell component 7 are both arranged on the base 10, the front shell component 6 is connected to the rear shell component 7 and the front shell component 6 is connected to the front side of the rear shell component 7, and the top cover 9 is covered on the top of the front shell component 6 and the rear shell component 7.

[0114] The front shell component 6 includes an air outlet frame assembly 61 and an air inlet frame assembly 1a. The air outlet frame assembly 61 is arranged above the air inlet frame assembly 1a and connected to the air inlet frame assembly 1a. The air outlet frame assembly 61 includes an air outlet frame 611 and an air guide plate 613. The front side of the air outlet frame 611 is formed with an air outlet 612, and the air guide plate 613 is rotatably arranged at the air outlet 612. The air inlet frame assembly 1a includes an air inlet frame 11 and an outer air inlet grille 5. The left and right sides of the air inlet frame 11 are formed with a first air inlet 12. The bottom of the air inlet frame 11 is also formed with a second air inlet 17. The outer air inlet grille 5 is detachably installed at the first air inlet 12. At least part of the air inlet cavity 13 is defined in the air inlet frame 11, and the inner air inlet grille 2 is located in the air inlet cavity 13.

[0115] An air inlet notch 101 extending in the left-right direction is formed at the front end of the base 10. The air inlet notch 101 is located below the second air inlet 17. The second air inlet 17 is formed on the bottom wall of the air inlet frame 11 and is covered with a lower filter 42. The lower filter 42 is detachably arranged at the air inlet frame 11 and can be installed or removed from the bottom of the air inlet frame 11.

[0116] The rear shell component 7 includes a side panel 71 and a back panel 72 . There are two side panels 71 . The two side panels 71 are respectively connected to the left and right ends of the back panel 72 and to the front side of the back panel 72 . The air outlet frame 611 and the air inlet frame 11 are both connected to the front ends of the two side panels 71 .

[0117] The heat exchange and air supply assembly 3a is arranged in the housing 1, and the heat exchange and air supply assembly 3a includes a heat exchanger component 4 and an air duct component 3. The heat exchanger component 4 is arranged in the housing 1 and is located above the air duct component 3. The air duct component 3 includes an air duct volute 32 and a wind wheel 33 arranged in the air duct volute 32. The air duct volute 32 is formed with an air flow inlet 31 and an air flow outlet. The air flow inlet 31 is formed at the front side of the air duct volute 32 and is located at the rear side of the air inlet cavity 13, and the air flow outlet is formed at the rear side of the heat exchanger component 4. The plane where the first air inlet 12 is located is the first air inlet plane 120, and the plane where the air flow inlet 31 is located is the second air inlet plane 121. Since the air flow inlet 31 is formed at the front side of the air duct volute 32 and is located at the rear side of the air inlet cavity 13, there is an angle α between the second air inlet plane 121 and the first air inlet plane 120, and the angle α>0°.

[0118] Among them, the inner air inlet grille 2 is detachably arranged in the air inlet cavity 13 and is formed with a latch hole 22 and a first connecting hole 24. A latch hook 111 is provided at a corresponding position of the air inlet frame 11 and the hook portion 112 of the latch hook 111 extends upward. The inner air inlet grille 2 includes a plurality of first grille ribs 21 arranged at intervals. Adjacent first grille ribs 21 define a first air flow channel 211. The wall surface of the first grille rib 21 facing the first air flow channel 211 is formed as a guide surface 212. The guide surface 212 has an angle with the first air inlet plane 120 and the second air inlet plane 121. An air guide cavity 16 is defined between the inner air inlet grille 2 and the air inlet frame 11. A matching flange 27 is formed on the top of the inner air inlet grille 2 and is sealed against the air inlet frame 11.

[0119] The lower end of the inner air inlet grille 2 is recessed in a direction away from the first air inlet 12 to form an escape space 28 , and a gap 43 for escaping the lower filter 42 is provided between the bottom surface of the inner air inlet grille 2 and the bottom wall of the air inlet frame 11 .

[0120] The outer air inlet grille 5 includes a plurality of second grille ribs 51 that are spaced apart, and a second air flow channel 52 is defined between adjacent second grille ribs 51. The projection of the second grille ribs 51 on a reference plane at least partially overlaps with the projection of the first grille ribs 21 on the reference plane, and the projection of the second air flow channel 52 on the reference plane at least partially overlaps with the projection of the first air flow channel 211 on the reference plane, and the reference plane is parallel to the plane where the first air inlet 12 is located.

[0121] When installing the inner air intake grille 2, the inner air intake grille 2 can be installed into the air intake frame 11 from top to bottom. When the hook 111 on the air intake frame 11 is inserted into the hook hole 22 of the inner air intake grille 2, the inner air intake grille 2 cannot move downward further under the limitation and support of the hook 111. At this time, the inner air intake grille 2 is installed in place. When removing the inner air intake grille 2, the inner air intake grille 2 can be moved upward until the hook hole 22 on the inner air intake grille 2 is disengaged from the hook 111 on the air intake frame 11. At this time, the inner air intake grille 2 can be removed from the air intake frame 11 and taken out.

[0122] When the air conditioner is working, the wind wheel 33 drives the air flow to enter through the first air inlet 12 and the second air inlet 17 respectively. After the air flow of the first air inlet 12 and the second air inlet 17 is filtered by the filter and the lower filter 42 respectively, the filtered air flow flows into the air duct volute 32 through the air flow inlet 31, and the wind wheel 33 drives the air flow to flow to the heat exchanger component 4 through the air flow outlet. The air flow exchanges heat when flowing through the heat exchanger component 4, and the air flow after heat exchange is blown into the room through the air outlet 612 to heat up or cool down the room.

[0123] The filtered airflow from the first air inlet 12 is guided by the inner air inlet grille 2 , thereby increasing the amount of airflow from the first air inlet plane 120 to the airflow inlet 31 .

[0124] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0125] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An air conditioner, characterized in that: include: The housing is formed with a first air inlet; an air duct component, disposed in the housing and comprising an air duct volute and a wind wheel disposed in the air duct volute, the air duct volute having an air flow inlet and an air flow outlet, an air inlet cavity being defined between the housing and the air duct component, the air inlet cavity communicating with the first air inlet and the air flow inlet; The inner air inlet grille is arranged in the air inlet cavity and is used to guide the airflow to the airflow inlet.

2. The air conditioner according to claim 1, characterized in that: The plane where the first air inlet is located is the first air inlet plane, the plane where the airflow inlet is located is the second air inlet plane, and there is an angle between the second air inlet plane and the first air inlet plane.

3. The air conditioner according to claim 2, characterized in that: The inner air inlet grille includes a plurality of first grille ribs arranged at intervals, and a first air flow channel is defined between adjacent first grille ribs. The wall surface of the first grille ribs facing the first air flow channel is formed as a guide surface, and an angle is formed between the guide surface and the first air inlet plane and the second air inlet plane.

4. The air conditioner according to claim 3, characterized in that: The angle between the first air inlet plane and the second air inlet plane is a first preset angle, the angle between the guide surface and the second air inlet plane is a second preset angle, and the ratio of the second preset angle to the first preset angle ranges from 1 / 3 to 2 / 3.

5. The air conditioner according to claim 3, characterized in that: The first air inlet is formed on the left side of the casing and / or the right side of the casing, and the air flow inlet is formed on the front side of the air duct volute and is located on the rear side of the air inlet cavity.

6. The air conditioner according to claim 1, characterized in that: The inner air inlet grille is detachably connected to the casing.

7. The air conditioner according to claim 6, characterized in that: One of the inner air inlet grille and the housing is provided with a hook, and the other is provided with a hook hole matched with the hook.

8. The air conditioner according to claim 7, characterized in that: The casing includes an air inlet frame, the first air inlet is formed on the side wall of the air inlet frame and extends in the up-down direction, the air inlet cavity is defined between the air inlet frame and the air duct component, the inner air inlet grille is installed in the air inlet frame and extends in the up-down direction, the clamping holes are provided at both ends of the inner air inlet grille in the width direction, and the clamping hook is provided on the air inlet frame.

9. The air conditioner according to claim 8, characterized in that: The hook portion of the hook extends upward, and the inner air inlet grille can be installed on the air inlet frame or removed from the air inlet frame along the up and down directions.

10. The air conditioner according to claim 9, characterized in that: A flange structure extending toward the inner side of the air inlet frame is formed at the top of the air inlet frame, and the upper edge of the inner air inlet grille includes a first upper edge, which is located below the flange structure and is spaced a first distance apart from the flange structure in the up and down directions, and a second distance between the bottom surface of the hook and the bottom wall of the hole in the up and down directions, and the first distance is greater than the second distance.

11. The air conditioner according to claim 8, characterized in that: At least one end of the inner air inlet grille in the width direction is formed with a reinforcing flange.

12. The air conditioner according to claim 8, characterized in that: There is a gap between the bottom surface of the inner air inlet grille and the inner bottom wall of the air inlet frame.

13. The air conditioner according to claim 8, characterized in that: A first connection hole is formed on the inner air intake grille, a second connection hole is formed on the air intake frame, and fasteners are passed through the first connection hole and the second connection hole; a reinforcing rib is formed on the inner air intake grille, and the reinforcing rib surrounds the outer peripheral side of the first connection hole.

14. The air conditioner according to claim 8, characterized in that: An air guide cavity is defined between the inner air inlet grille and the air inlet frame, and the first air inlet is formed on the side wall of the air guide cavity; a matching flange is formed on the top of the inner air inlet grille, and the matching flange is abutted and sealed with the air inlet frame.

15. The air conditioner according to claim 1, characterized in that: The housing comprises an air inlet frame, the first air inlet is formed on a side wall of the air inlet frame and extends in an up-down direction, the air inlet cavity is defined between the air inlet frame and the air duct component, and the inner air inlet grille is installed in the air inlet frame and extends in an up-down direction; A second air inlet is formed on the bottom wall of the air inlet frame, and a lower filter for covering the second air inlet is installed on the bottom wall of the air inlet frame. There is a gap between the bottom surface of the inner air inlet grille and the bottom wall of the air inlet frame, and the gap is used to avoid the lower filter.

16. The air conditioner according to claim 15, characterized in that: The lower filter can be installed in the air inlet frame through the first air inlet or can be taken out from the air inlet frame through the first air inlet.

17. The air conditioner according to claim 16, characterized in that: The lower end of the inner air inlet grille is recessed in a direction away from the first air inlet to form an escape space, and the escape space is used to avoid deformation of the lower filter during the disassembly and assembly process.

18. The air conditioner according to any one of claims 1 to 17, characterized in that: It comprises an outer air inlet grille which is detachably arranged at the first air inlet.

19. The air conditioner according to claim 18, characterized in that: The inner air intake grille includes a plurality of first grille ribs arranged at intervals, and a first airflow channel is defined between adjacent first grille ribs; the outer air intake grille includes a plurality of second grille ribs arranged at intervals, and a second airflow channel is defined between adjacent second grille ribs, the projection of the second grille ribs on a reference plane at least partially overlaps with the projection of the first grille ribs on the reference plane, the projection of the second airflow channel on the reference plane at least partially overlaps with the projection of the first airflow channel on the reference plane, and the reference plane is parallel to the plane where the first air inlet is located.

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