Indoor unit and heating and ventilation system

Abstract

The utility model provides an indoor unit and a heating and ventilation system. The indoor unit comprises a shell, a motor support, a motor cover and a motor. The motor support is connected to the shell, and the motor cover covers the motor support and is detachably connected with the motor support, so that the motor is fixed between the motor support and the motor cover; wherein the motor cover is exposed at the bottom of the indoor unit. The motor in the indoor unit is convenient to overhaul.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to an indoor unit and a heating and ventilation system using the indoor unit. Background Art

[0002] The duct unit is a type of indoor unit. In the related art, the indoor unit includes a housing, a wind wheel and a motor. An air duct is formed in the housing. The wind wheel is located in the wind wheel cavity of the air duct. The motor is connected to the wind wheel by transmission. The motor is placed on a partition or a motor bracket in the air duct. Then, the motor cover is connected to the partition or the motor bracket by screws to fix the motor. When the motor needs to be repaired, the housing needs to be disassembled before the motor cover can be disassembled to disassemble and repair the motor.

[0003] However, the disassembly and assembly method of the motor in the above-mentioned indoor unit is relatively complicated, which is not convenient for subsequent maintenance of the motor. Utility Model Content

[0004] The embodiments of the present application provide an indoor unit and a HVAC system, which are used to solve the problem in the related art that the disassembly and assembly method of the motor of the indoor unit is relatively complicated, making it inconvenient to perform subsequent maintenance on the motor.

[0005] In a first aspect, the present application provides an indoor unit, comprising a shell, a motor bracket, a motor cover and a motor; the motor bracket is connected to the shell, the motor cover is buckled on the motor bracket, and is detachably connected to the motor bracket to fix the motor between the motor bracket and the motor cover; wherein the motor cover is exposed at the bottom of the indoor unit.

[0006] As an optional embodiment, the motor cover is covered on the side of the motor bracket facing away from the housing. In this way, the motor cover can be fully seen after the grille on the inspection opening is removed, so that the motor cover can be removed from the motor bracket, making it more convenient to inspect the motor in the later stage.

[0007] As an optional implementation, an air duct is formed in the shell, and the air duct includes a connected return air port and a wind wheel cavity, and a wind wheel connected to the motor transmission is arranged in the wind wheel cavity; the motor cover is exposed at the return air port.

[0008] As an optional embodiment, one side of the motor cover is snap-connected to one side of the motor bracket, and the other side of the motor cover is detachably connected to the other side of the motor bracket via a connector. In this way, compared with the traditional connection method using threaded fasteners, the connection between the motor cover and the motor bracket can be achieved without the assistance of a third-party tool, making the disassembly and assembly efficiency between the motor cover and the motor bracket higher.

[0009] As an optional embodiment, the opposite sides of the motor cover and the opposite sides of the motor bracket are detachably connected via connectors. In this way, compared with the traditional connection method using threaded fasteners, the motor cover and the motor bracket can be connected without the assistance of third-party tools, making the disassembly and assembly efficiency between the motor cover and the motor bracket higher.

[0010] As an optional embodiment, a connecting hole is opened on the motor cover, and a plug-in hole is opened on the motor bracket; a partial structure of the connecting piece can slide along the connecting hole and the plug-in hole and be inserted into the connecting hole and the plug-in hole to lock the motor cover and the motor bracket.

[0011] As an optional embodiment, the connecting member includes an operating part and a plug-in part connected to the operating part; the plug-in part can be slidably inserted into the connecting hole and the plug-in hole to relatively fix the motor cover and the motor bracket, and the operating part is at least partially exposed outside the motor cover to be exposed at the bottom of the indoor unit.

[0012] As an optional embodiment, the operating part includes a sliding section and a toggle section, the plug-in part and the toggle section are both connected to the sliding section; the sliding section is slidably matched with the motor cover, and at least part of the structure of the toggle section is exposed outside the motor cover. In this way, the exposed setting of the toggle section facilitates the operation of the connector.

[0013] As an optional implementation, a sliding space is formed on the motor cover, and the sliding section slides along the sliding space, so as to guide the movement of the connecting member to a certain extent and improve the stability of the connecting member during the movement.

[0014] As an optional implementation, the sliding space is formed on a side of the motor cover facing the motor bracket; a first through hole for the toggle section to pass through is formed on the bottom wall of the sliding space.

[0015] As an optional embodiment, a sliding space is formed on a side of the motor cover facing away from the motor bracket; the toggle section is located in the sliding space, and a second through hole is provided on the bottom wall of the sliding space for a partial structure of the sliding section to pass through, so that the plug-in portion is connected to the sliding section.

[0016] As an optional implementation, a limiting structure is provided between the operating portion and the motor cover, and the limiting structure is used to limit the sliding stroke of the connecting member.

[0017] As an optional implementation, the motor cover includes a cover body and a stopper connected to the cover body; the stopper is used to stop the operating part in the length direction of the indoor unit.

[0018] As an optional implementation, a positioning structure is provided between the motor bracket and the motor cover; the positioning structure is used to limit the relative position of the motor bracket and the motor cover in the axial direction of the motor.

[0019] As an optional embodiment, the positioning structure includes a protrusion and a positioning portion; the protrusion is arranged on one of the motor bracket and the motor cover, the positioning portion is arranged on the other of the motor bracket and the motor cover, and the positioning portion is stopped on one side of the protrusion along the axial direction of the motor.

[0020] As an optional embodiment, the housing includes a first housing and a second housing that are snapped together, and the motor bracket is detachably connected to the first housing. In this way, it is convenient to install the motor bracket on the first housing, and the disassembly efficiency between the motor bracket and the first housing is improved.

[0021] In a second aspect, the present application provides a HVAC system, comprising the above-mentioned indoor unit.

[0022] In the indoor unit and HVAC system provided in the embodiment of the present application, the motor cover is exposed at the bottom of the indoor unit, and the motor cover and the motor bracket are connected in a detachable manner, so that the motor cover can be seen by opening the grille at the inspection port, and the motor cover can be removed from the motor bracket to remove the motor. In this way, compared with the direction in which the housing of the indoor unit needs to be removed for repairing the motor in the related art, the disassembly and assembly of the motor in the embodiment of the present application is more convenient, which is convenient for later repair of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the three-dimensional structure of the indoor unit provided in an embodiment of the present application;

[0025] Figure 2 An exploded view of the indoor unit provided in an embodiment of the present application;

[0026] Figure 3 A schematic diagram of the planar structure of the indoor unit provided in an embodiment of the present application;

[0027] Figure 4 A schematic diagram of the local structure of an indoor unit provided in an embodiment of the present application;

[0028] Figure 5 A schematic diagram of a three-dimensional structure of an implementation method of the cooperation between a motor cover, a motor bracket and a motor in an indoor unit provided in an embodiment of the present application;

[0029] Figure 6 for Figure 5Schematic diagram of the planar structure;

[0030] Figure 7 for Figure 5 Exploded diagram of

[0031] Figure 8 for Figure 5 Schematic diagram of the plane structure from another perspective;

[0032] Fig. 9 for Figure 8 Cross-sectional view along AA direction;

[0033] Fig.10 for Fig. 9 A magnified schematic diagram of the local structure at B in the middle;

[0034] Fig.11 A schematic diagram of a three-dimensional structure of another implementation method of the cooperation between the motor cover, the motor bracket and the motor in the indoor unit provided in an embodiment of the present application;

[0035] Fig.12 for Fig.11 Schematic diagram of the planar structure;

[0036] Fig.13 for Fig.11 Exploded diagram of

[0037] Fig.14 for Figure 5 A schematic diagram of the structure of the motor bracket and the motor cover in the corresponding embodiment;

[0038] Fig.15 for Fig.14 Cross-sectional view along CC direction;

[0039] Fig.16 for Fig.15 A magnified schematic diagram of the local structure at D in the middle;

[0040] Fig.17 for Fig.14 A schematic diagram of the structure of the motor bracket and the motor cover in the corresponding embodiment;

[0041] Fig.18 for Fig.17 Cross-sectional view along EE direction;

[0042] Fig.19 for Fig.18 A magnified schematic diagram of the local structure at F in the middle;

[0043] Fig. 20 A schematic diagram of the three-dimensional structure of a connector in an indoor unit provided in an embodiment of the present application;

[0044] Fig.21 for Figure 5 A schematic diagram of the matching relationship between the motor cover and the connecting member in the corresponding embodiment;

[0045] Fig. 22 for Fig.17 A magnified schematic diagram of the local structure at G in the middle;

[0046] Fig.23 for Figure 5 A schematic diagram of the three-dimensional structure of the motor cover in the corresponding embodiment;

[0047] Fig.24 for Fig.23 Schematic diagram of the three-dimensional structure from another perspective;

[0048] Fig.25 for Fig.14 A schematic diagram of the three-dimensional structure of the motor cover in the corresponding embodiment;

[0049] Fig.26 for Fig.25 Schematic diagram of the three-dimensional structure from another perspective;

[0050] Fig. 27 for Figure 5 Another structural schematic diagram of the motor bracket and the motor cover in the corresponding embodiment;

[0051] Fig.28 for Fig. 27 Cross-sectional view along the HH direction;

[0052] Fig.29 for Fig.28 A magnified schematic diagram of the local structure at position I in the middle;

[0053] Fig.30 for Figure 5 A schematic diagram of the three-dimensional structure of the motor bracket in the corresponding embodiment;

[0054] Fig.31 A schematic diagram of the connection structure between the motor bracket and the first shell in the indoor unit provided in an embodiment of the present application;

[0055] Fig.32 for Fig.31 Cross-sectional view along JJ direction;

[0056] Fig.33 for Fig.32 Enlarged schematic diagram of the local structure at K in the middle.

[0057] Description of reference numerals:

[0058] 1. Shell; 2. Wind wheel; 3. Evaporator; 4. Motor; 5. Motor bracket; 6. Motor cover; 7. Electric control box; 8. Connector; 9. Protrusion;

[0059] 10. Indoor unit; 11. First housing; 12. Second housing; 13. Air duct; 51. Bracket body; 52. Extension; 53. Clamping space; 54. Reinforcement plate; 55. Connecting plate; 56. Plug-in hole; 57. First connecting ear; 58. Extension; 59. Clamping convex; 61. Cover; 62. Clamping hook; 63. Connecting hole; 64. Second connecting ear; 65. Side plate; 66. Short guide plate; 67. Concave cavity; 81. Operating part; 82. Plug-in part; 20. Positioning part;

[0060] 111, second clamping hole; 121, mounting cavity; 131, return air outlet; 132, wind wheel cavity; 133, pressure diffusion cavity; 134, heat exchange cavity; 135, air outlet; 511, first clamping hole; 512, motor slot; 581, threaded hole; 591, convex block; 611, sliding space; 612, limit block; 613, stopper; 621, penetration portion; 622, abutment portion; 811, sliding section; 812, toggle section;

[0061] 6111, first through hole; 6112, second through hole; 6113, installation cavity; 6131, stop surface; 8111, sliding body; 8112, third connecting ear; 8113, weight reduction hole; 8114, limiting protrusion. DETAILED DESCRIPTION

[0062] In the related art, the indoor unit includes a housing, a wind wheel and a motor. An air duct is formed in the housing. The wind wheel is located in the wind wheel cavity of the air duct. The motor is connected to the wind wheel by transmission. The motor is placed on a partition or a motor bracket in the air duct. Then, the motor cover is connected to the partition or the motor bracket by screws to fix the motor. When the motor needs to be repaired, the housing needs to be disassembled before the motor cover can be disassembled to disassemble and repair the motor. However, the disassembly and assembly method of the motor in the above-mentioned indoor unit is relatively complicated, which is not convenient for later maintenance of the motor.

[0063] Therefore, the embodiment of the present application provides an indoor unit and a HVAC system, wherein the motor is easy to disassemble and assemble, and it is convenient to overhaul the motor later.

[0064] The embodiments of the present application will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0065] See also Figures 1 to 4 , Figure 1 A schematic diagram of the three-dimensional structure of the indoor unit provided in an embodiment of the present application. Figure 2 This is an exploded view of the indoor unit provided in the embodiment of the present application. Figure 3 This is a schematic diagram of the planar structure of the indoor unit provided in the embodiment of the present application. Figure 4This is a schematic diagram of the partial structure of the indoor unit provided in the embodiment of the present application. Figures 1 to 4 As shown, an embodiment of the present application provides an indoor unit 10, including a shell 1, the shell 1 includes a first shell 11 and a second shell 12 connected together, the second shell 12 and the second shell 12 enclose an air duct 13, the air duct 13 includes a return air port 131, a wind wheel cavity 132, a pressure diffuser cavity 133, a heat exchange cavity 134 and an air outlet 135 connected in sequence, the return air port 131 is opposite to the inspection port below the indoor unit 10, a wind wheel 2 is arranged in the wind wheel cavity 132, and an evaporator 3 is arranged in the heat exchange cavity 134. When the indoor unit 10 is working, the air flow can pass through the return air port 131, the wind wheel cavity 132, the pressure diffuser cavity 133 and the heat exchange cavity 134, and then flow out from the air outlet 135.

[0066] In order to drive the wind wheel 2 to rotate, the indoor unit 10 provided in this embodiment should also include a motor 4, which is in transmission connection with the wind wheel 2 and is located on one side of the wind wheel 2 along the length direction of the indoor unit 10. Figures 1 to 3 The xx-axis direction is consistent.

[0067] Generally, in order to fix the motor 4, the motor bracket 5 can be connected to the first shell 11, and the motor cover 6 can be buckled on the motor bracket 5, and the motor cover 6 can be detachably connected to the motor bracket 5 to fix the motor 4 between the motor bracket 5 and the motor cover 6; wherein, the motor cover 6 is exposed at the bottom of the indoor unit 10, that is, the motor cover 6 can be exposed from the inspection port on the ceiling below the indoor unit 10. In this way, when the motor 4 needs to be inspected, the motor cover 6 can be observed by removing the grille at the inspection port, and then the motor cover 6 can be removed to remove the motor 4 and inspect the motor 4. In this way, compared with the method in the related art that requires the disassembly of the shell to inspect the motor, the disassembly and assembly of the motor 4 in this embodiment is more convenient, thereby facilitating the inspection of the motor 4.

[0068] When the motor cover 6 can be exposed through the inspection port, the motor cover 6 and the motor bracket 5 may be distributed along the axial direction of the motor 4. In this way, when the grille at the inspection port is opened, it is not convenient to remove the motor cover 6. Therefore, in some embodiments, the motor cover 6 covers the side of the motor bracket 5 away from the housing 1, specifically the side away from the first housing 11, that is, the motor cover 6 covers the side of the motor bracket 5 facing the inspection port, that is, in this embodiment, the motor cover 6 covers the bottom of the motor bracket 5. In this way, when the grille at the inspection port is opened, the motor cover 6 can be directly removed from the motor bracket 5, and then the motor 4 can be removed, which can further improve the convenience of disassembly and maintenance of the motor 4.

[0069] Since the return air port 131 in this embodiment is opposite to the inspection port, in this embodiment, the motor cover 6 can be exposed at the return air port 131. In this way, while maintaining the convenience of disassembly and assembly of the motor cover 6, when the indoor unit 10 is in working state, the external air flow can flow to the motor cover 6 through the return air port 131 to dissipate the heat of the motor 4.

[0070] At the same time, in some embodiments, in order to improve the compactness of the overall structure of the indoor unit 10 and the overall performance of the indoor unit 10, an upwardly recessed installation cavity 121 can be formed on the bottom surface of the second shell 12, and the electric control box 7 can be arranged in the installation cavity 121 and arranged toward the return air port 131, and the electric control box 7 is detachably connected to the second shell 12, so that when the grille on the inspection port is opened, the electric control box 7 will also be exposed, which is convenient for inspecting the electric control box 7; in addition, the airflow entering through the return air port 131 can also dissipate the heat of the electric control box 7, that is, the airflow entering through the return air port 131 can simultaneously achieve heat dissipation for the motor 4 and the electric control box 7, so that the indoor unit 10 provided in this embodiment has better performance.

[0071] Moreover, by installing the electric control box 7 in the installation cavity 121, not only the above effects are achieved, but also the overall size of the indoor unit 10 does not change in the height direction of the indoor unit 10. Therefore, the overall structure of the indoor unit 10 provided in this embodiment is more compact.

[0072] In a more commonly used method, threaded fasteners such as screws are usually used to connect the motor cover 6 and the motor bracket 5 together. Therefore, when the motor cover 6 is disassembled, the assistance of a third-party tool is required to disassemble the motor cover 6. This will reduce the disassembly efficiency of the motor cover 6 and thus reduce the maintenance efficiency of the motor 4.

[0073] In order to overcome the above-mentioned defects, two connection methods between the motor cover 6 and the motor bracket 5 are provided in this embodiment to improve the efficiency of disassembly and assembly of the motor cover 6 and the efficiency of maintenance of the motor 4. The two methods will be introduced respectively below. Since the following connecting member 8 is used in both connecting methods, the structure of the connecting member 8 is only introduced once and will not be repeated in the two connecting methods.

[0074] See also Figure 5 and Figure 7 , Figure 5 A three-dimensional structural diagram of an implementation method of the cooperation between the motor cover, the motor bracket and the motor in the indoor unit provided in an embodiment of the present application, Figure 6 for Figure 5 Schematic diagram of the planar structure, Figure 7 for Figure 5 Exploded diagram of Figures 5 to 7As shown, along the width direction of the indoor unit 10, one side of the motor cover 6 is snap-connected with one side of the motor bracket 5, and the other side of the motor cover 6 is detachably connected with the other side of the motor bracket 5 through a connector 8. Figure 6 The arrow direction on one side of the connecting member 8 is the operating direction of the connecting member 8.

[0075] It should be noted that the width direction of the indoor unit 10 is Figures 1 to 4 The yy-axis direction is consistent.

[0076] Please continue to see Figures 8 to 10 , Figure 8 for Figure 5 Schematic diagram of the plane structure from another perspective. Fig. 9 for Figure 8 Cross-sectional view along AA direction, Fig.10 for Fig. 9 A magnified schematic diagram of the local structure at point B in the middle.

[0077] As shown in the figure, on the side of the motor cover 6 away from the heat exchange chamber 134, the motor cover 6 and the motor bracket 5 are detachably connected by a snap connection. Specifically, the motor cover 6 includes a cover body 61 and a hook 62 connected to the side of the cover body 61 away from the heat exchange chamber 134, one end of the hook 62 is connected to the cover body 61, and the other end of the hook 62 faces the side away from the heat exchange chamber 134 and extends downward. Correspondingly, the motor bracket 5 includes a bracket body 51 and an extension portion 52 connected to the side of the bracket body 51 away from the heat exchange chamber 134, one end of the extension portion 52 is connected to the bracket body 51, and the other end of the extension portion 52 faces the side of the bracket body 51 away from the heat exchange chamber 134 and extends upward, and the bracket body 51 and the extension portion 52 are connected. A clamping space 53 is formed between the extension portion 52 and the bracket body 51, a first clamping hole 511 is provided on the bracket body 51, a plurality of reinforcing plates 54 are connected between the extension portion 52 and the bracket body 51, any two adjacent reinforcing plates 54 are connected by a connecting plate 55, the top of the connecting plate 55 is located below the bottom wall of the first clamping hole 511, the hook 62 includes a through-set portion 621 and abutting portion 622 connected in sequence, the through-set portion 621 is connected to the cover body 61, the bottom end of the abutting portion 622 is located below the bottom end of the through-set portion 621, after the hook 62 passes through the first clamping hole 511, the bottom end of the abutting portion 622 abuts on the connecting plate 55, the through-set portion 621 cooperates with the first clamping hole 511 to buckle one side of the motor cover 6 with one side of the motor bracket 5.

[0078] Among them, the up and down directions Figure 1 , Figure 2 and Figure 4 The up and down directions are consistent.

[0079] It should be noted that, in some other embodiments, the structure for clamping the motor cover 6 and the motor bracket 5 together can also be the cooperation of two hooks, or the cooperation of a buckle and a slot. Here, the clamping structure connecting the motor cover 6 and the motor bracket 5 is not specifically limited.

[0080] Please continue to see Figures 11 to 13 , Fig.11 This is a three-dimensional structural diagram of another implementation method of the cooperation between the motor cover, the motor bracket and the motor in the indoor unit provided in the embodiment of the present application. Fig.12 for Fig.11 Schematic diagram of the planar structure, Fig.13 for Fig.11 Exploded diagram of Figures 11 to 13 As shown, in another embodiment, in the width direction of the indoor unit 10, the opposite sides of the motor cover 6 and the opposite sides of the motor bracket 5 can be detachably connected via connecting pieces 8 respectively.

[0081] Please continue to see Figures 14 to 16 , Fig.14 for Figure 5 A schematic diagram of the structure of the motor bracket and the motor cover in the corresponding embodiment, Fig.15 for Fig.14 Cross-sectional view along CC direction, Fig.16 for Fig.15 The enlarged schematic diagram of the local structure at D in the middle. In order to detachably connect the motor cover 6 and the motor bracket 5 along one or either side of the width direction of the indoor unit 10 through the connecting piece 8, it is necessary to open a connecting hole 63 on the motor cover 6 and open a plug hole 56 coaxial with the connecting hole 63 on the motor bracket 5; a part of the structure of the connecting piece 8 can slide along the connecting hole 63 and the plug hole 56 and be inserted into the connecting hole 63 and the plug hole 56 to relatively fix the motor cover 6 and the motor bracket 5.

[0082] Please continue to see Figures 17 to 19 , Fig.17 for Fig.14 A schematic diagram of the structure of the motor bracket and the motor cover in the corresponding embodiment, Fig.18 for Fig.17 Cross-sectional view along EE direction, Fig.19 for Fig.18A schematic diagram of the enlarged local structure at F in the middle. As shown in the figure, in order to open the above-mentioned connection hole 63 and the plug hole 56, in some optional embodiments, a first connection ear 57 can be provided on the side of the bracket body 51 facing the motor cover 6, and a second connection ear 64 can be provided on the side of the cover body 61 facing the motor bracket 5. The first connection ear 57 and the second connection ear 64 are overlapped in the axial direction of the motor 4, that is, in the length direction of the indoor unit 10, the plug hole 56 is provided on the first connection ear 57, and the connection hole 63 is provided on the second connection ear 64.

[0083] In some specific embodiments, the connection hole 63 and the plug hole 56 can be round holes. Here, the shapes of the connection hole 63 and the plug hole 56 are not specifically limited.

[0084] Please continue to see Fig. 20 , Fig. 20 Schematic diagram of the three-dimensional structure of the connecting member in the indoor unit provided in the embodiment of the present application. Fig. 20 As shown, in some embodiments, the connecting member 8 includes an operating part 81 and a plug-in part 82 connected to the operating part 81; the plug-in part 82 can be slidably inserted into the connecting hole 63 and the plug-in hole 56 to lock the motor cover 6 and the motor bracket 5, and the operating part 81 is at least partially exposed outside the motor cover 6 to be exposed at the bottom of the indoor unit 10.

[0085] In some specific embodiments, the above-mentioned plug-in portion 82 can be a plug-in column, and the axial direction of the plug-in column is consistent with the axial direction of the motor 4, that is, the axial direction of the plug-in column is consistent with the length direction of the indoor unit 10, and in order to improve the connection reliability between the motor bracket 5 and the motor cover 6, the above-mentioned plug-in portion 82 can be arranged at two intervals along the axial direction of the motor 4, and the two plug-in portions 82 have the same orientation, and the same orientation can be understood as the same orientation of the insertion end of the plug-in portion 82.

[0086] In order to facilitate the insertion of the plug-in portion 82 into the connecting hole 63 and the plug-in hole 56 , the radial dimension of the end of the plug-in portion 82 is smaller than the radial dimension of the connecting hole 63 and the plug-in hole 56 .

[0087] When the connecting hole 63 and the inserting hole 56 are both circular holes, the outer peripheral surface of the inserting portion 82 is a revolving surface, so that the outer contour of the inserting portion 82 is adapted to the shapes of the connecting hole 63 and the inserting hole 56 .

[0088] Furthermore, in order to facilitate the operation of the operating part 81, that is, to facilitate pushing and pulling the connecting piece 8, in some optional embodiments, the operating part 81 may include a sliding section 811 and a toggle section 812 connected together, and the plug-in part 82 is connected to the sliding section 811; the sliding section 811 is slidably matched with the motor cover 6, and at least part of the structure of the toggle section 812 is exposed outside the motor cover 6.

[0089] When there are two operating parts 81 mentioned above, in order to connect the two operating parts 81 to the sliding section 811, in some optional embodiments, the sliding section 811 may include a sliding body 8111 and two third connecting ears 8112, the sliding body 8111 is connected to the top of the toggle section 812, the two third connecting ears 8112 are connected to the top of the sliding body 8111, the two third connecting ears 8112 are arranged corresponding to the two plug-in parts 82, and the plug-in part 82 is arranged on one side of the corresponding third connecting ear 8112 along the length direction of the indoor unit 10, and the two plug-in parts 82 are arranged on the same side of the two third connecting ears 8112.

[0090] In order to facilitate the operation of the connecting member 8, the weight of the connecting member 8 can be reduced. Therefore, in this embodiment, two weight-reducing holes 8113 can be set on the sliding body 8111. In this way, the weight of the connecting member 8 can be reduced to facilitate the operation or assembly of the connecting member 8.

[0091] It should be noted that, in some specific implementations, the two weight-reducing holes 8113 are spaced apart along the width direction of the indoor unit 10 , and the toggle section 812 is located between the two weight-reducing holes 8113 .

[0092] Please continue to see Fig.21 and Fig. 22 , Fig.21 for Figure 5 A schematic diagram of the matching relationship between the motor cover and the connecting member in the corresponding embodiment, Fig. 22 for Fig.17 The enlarged schematic diagram of the local structure at G in the middle. Some errors are inevitable in the process of processing the motor bracket 5, the motor cover 6 and the connector 8. Therefore, when the gap between the plug-in portion 82 and the connecting hole 63 and the plug-in hole 56 is large, the stability of the connector 8 during the movement will be poor. Therefore, in order to improve the stability of the connector 8 during the movement, a guide structure can be provided on the motor cover 6.

[0093] For example, a sliding space 611 can be formed on the cover body 61 of the motor cover 6, the sliding section 811 slides along the sliding space 611, and the extension direction of the sliding space 611 is consistent with the axial direction of the motor 4. Specifically, the sliding body 8111 is located in the sliding space 611 and slides with the sliding space 611.

[0094] Since two connection modes between the motor cover 6 and the motor bracket 5 are provided in this embodiment, there are some differences in the matching modes between the connector 8 and the motor cover 6 for the two connection modes, which will be introduced one by one below.

[0095] Please continue to see Fig.23 and Fig.24 , Fig.23 for Figure 5 A schematic diagram of the three-dimensional structure of the motor cover in the corresponding embodiment, Fig.24 for Fig.23 Schematic diagram of the three-dimensional structure from another perspective. When one side of the motor cover 6 is snap-connected to one side of the motor bracket 5, and the other side of the motor cover 6 is detachably connected to the other side of the motor bracket 5 through the connecting piece 8, a sliding space 611 is formed on the side of the cover body 61 facing the motor bracket 5, and a first passage 6111 is provided on the bottom wall of the sliding space 611 for the toggle section 812 to pass through.

[0096] Specifically, a side plate 65 is connected to one side of the cover body 61, and a side wall of the sliding space 611 is formed by using the plate surface of the side plate 65. A guide short plate 66 can be set on the opposite side of the side plate 65, and the other side wall of the sliding space 611 is formed by using the plate surface of the guide short plate 66. In this way, the sliding body 8111 can slide and cooperate with the side plate 65 and the guide short plate 66.

[0097] Please continue to see Fig.25 and Fig.26 , Fig.25 for Fig.14 A schematic diagram of the three-dimensional structure of the motor cover in the corresponding embodiment, Fig.26 for Fig.25 Schematic diagram of the three-dimensional structure from another perspective. When the two opposite sides of the motor cover 6 and the two opposite sides of the motor bracket 5 are detachably connected through the connecting piece 8, the sliding space 611 is opened on the side of the motor cover 6 away from the motor bracket 5, and the sliding space 611 at this time can be a slide groove formed on the motor cover 6; the toggle section 812 is located in the sliding space 611, and two second through holes 6112 are opened on the bottom wall of the sliding space 611, and the two second through holes 6112 are arranged in a one-to-one correspondence with the two third connecting ears 8112, and the third connecting ears 8112 are connected to the corresponding plug-in portion 82 after passing through the second through holes 6112.

[0098] When one side of the motor cover 6 is snap-connected to one side of the motor bracket 5, and the other side of the motor cover 6 is detachably connected to the other side of the motor bracket 5 through the connecting piece 8, since the sliding space 611 has no stop for the connecting piece 8 in the moving direction of the connecting piece 8, a corresponding limiting structure needs to be set to limit the sliding stroke of the connecting piece 8.

[0099] Therefore, in some optional embodiments, the above-mentioned limiting structure includes a limiting protrusion 8114 arranged on the sliding body 8111 and a limiting block 612 arranged on the side wall of the sliding space 611. When the connecting member 8 connects the motor cover 6 and the motor bracket 5 together, the limiting protrusion 8114 abuts against one side of the limiting block 612 along the axial direction of the motor 4. Since the sliding space 611 has two side walls arranged opposite to each other, the limiting block 612 can be set on the side wall formed by the side plate 65 and on the opposite side of the side plate 65. The limiting block 612 located on the opposite side of the side plate 65 can be directly connected to the cover body 61, and the limiting block 612 can be located between the guide short plate 66 and a second connecting ear 64.

[0100] It should be noted that when the opposite sides of the motor cover 6 and the opposite sides of the motor bracket 5 are detachably connected through the connecting pieces 8, although the two end walls of the sliding space 611 along its extension direction can limit the moving stroke of the connecting piece 8, in order to further improve the stability of the connecting piece 8 during the movement, the above-mentioned limit blocks 612 can be respectively arranged on the two opposite side walls of the sliding space 611 to limit the moving stroke of the connecting piece 8.

[0101] In order to facilitate the operation of the connecting member 8, a corresponding stop structure can be provided to stop the connecting member 8, so as to prevent the connecting member 8 from being separated from the motor cover 6 when the motor cover 6 is not connected to the motor bracket 5.

[0102] Therefore, in some specific embodiments, a stop portion 613 can be set on the side wall of the sliding space 611; the stop portion 613 is used to stop the operating portion 81 in the direction in which the connecting member 8 is separated from the motor cover 6. In this embodiment, the stop portion 613 is used to stop the operating portion 81 in the length direction of the indoor unit 10.

[0103] Specifically, Fig.24 As shown, when one side of the motor cover 6 is snap-connected to one side of the motor bracket 5, and the other side of the motor cover 6 is detachably connected to the other side of the motor bracket 5 through the connecting piece 8, the side plate 65 and the opposite side of the side plate 65 are provided with a stop portion 613, and each side is provided with two stop portions 613 distributed at intervals, and on the side plate 65, the limit block 612 is located between the two stop portions 613; on the opposite side of the side plate 65, the guide short plate 66 is connected between a second connecting ear 64 and a stop portion 613, and the other stop portion 613 is connected to the other second connecting ear 64, so that the limit block 612 is located between the two stop portions 613.

[0104] like Fig.25As shown, when the opposite sides of the motor cover 6 and the opposite sides of the motor bracket 5 are detachably connected via the connecting pieces 8, two stop portions 613 are provided on the two oppositely arranged side walls of the sliding space 611, and on the same side wall, the limit block 612 is located between the two stop portions 613.

[0105] In addition, since the limiting protrusion 8114 is protruding relative to the sliding body 8111, in order to enable the limiting block 612 to stop the limiting protrusion 8114, a recessed installation cavity 6113 can be set on the side wall of the sliding space 611, and the limiting block 612 can be set on the bottom wall of the installation cavity 6113.

[0106] Among them, the stop portion 613 has a stop surface 6131. ​​When one side of the motor cover 6 is snap-connected with one side of the motor bracket 5, and the other side of the motor cover 6 is detachably connected with the other side of the motor bracket 5 through the connecting piece 8, the stop surface 6131 stops above the sliding body 8111; when the opposite two sides of the motor cover 6 are detachably connected with the opposite two sides of the motor bracket 5 through the connecting piece 8, the stop surface 6131 stops below the sliding body 8111.

[0107] In some embodiments, since the relative positions of the motor cover 6 and the motor bracket 5 in the axial direction of the motor 4 are not determined, a positioning structure can be set between the motor bracket 5 and the motor cover 6 to limit the relative positions of the motor bracket 5 and the motor cover 6 in the axial direction of the motor 4.

[0108] Please continue to see Figure 27 to Figure 29 , Fig. 27 for Figure 5 Another structural schematic diagram of the motor bracket and the motor cover in the corresponding embodiment, Fig.28 for Fig. 27 Cross-sectional view along the HH direction, Fig.29 for Fig.28 The enlarged schematic diagram of the local structure at I in the figure. Figures 27 to 29 As shown, the positioning structure may include a protrusion 9 and a positioning portion 20; the protrusion 9 is arranged on one of the motor bracket 5 and the motor cover 6, the positioning portion 20 is arranged on the other of the motor bracket 5 and the motor cover 6, and the positioning portion 20 is stopped on one side of the protrusion 9 along the axial direction of the motor 4.

[0109] Please continue to see Fig.30 ,in, Fig.30 for Figure 5 A schematic diagram of the three-dimensional structure of the motor bracket in the corresponding embodiment. A motor slot 512 into which a part of the structure of the power supply unit 4 extends is formed on the bracket body 51, and two oppositely disposed side walls of the motor slot 512 can form the above-mentioned protrusion 9.

[0110] like Fig.24 As shown, the positioning portion 20 can be a cavity 67 formed on the top of the cover body 61, the bottom surface of the protrusion 9 can abut against one side wall of the cavity 67, and the other side wall of the cavity 67 can abut against the side of the protrusion 9 away from the center axis of the motor slot 512.

[0111] In some other embodiments, the protrusion 9 and the positioning portion 20 may also be other structures. Here, other structures of the protrusion 9 and the positioning portion 20 are not limited.

[0112] In this embodiment, in order to facilitate the connection of the motor bracket 5 to the first shell 11, a detachable connection method can be adopted between the motor bracket 5 and the first shell 11, for example, a threaded connection method is adopted on one side of the indoor unit 10 in the width direction, and a snap connection method is adopted on the other side of the indoor unit 10 in the width direction.

[0113] For details, please refer to Figure 31 to Figure 33 , Fig.31 A schematic diagram of the connection structure between the motor bracket and the first shell in the indoor unit provided in an embodiment of the present application, Fig.32 for Fig.31 Cross-sectional view along JJ direction, Fig.33 for Fig.32 The enlarged schematic diagram of the local structure at K in the middle. Specifically, the bracket body 51 is connected to an extension portion 58 on one side along the width direction of the indoor unit 10, and a threaded hole 581 is provided on the extension portion 58. The screw passing through the threaded hole 581 can connect one side of the motor bracket 5 to the first shell 11; on the opposite side of the extension portion 58, two clamping protrusions 59 spaced apart along the length direction of the indoor unit 10 are connected to the bracket body 51, and a second clamping hole 111 is provided on the first shell 11 for the clamping protrusion 59 to pass through. The clamping protrusion 59 is engaged and connected with the corresponding second clamping hole 111 to connect the other side of the motor bracket 5 to the first shell 11. Specifically, the clamping protrusion 59 has an extended protrusion 591 on one side along the axial direction of the motor 4, and the protrusion 591 abuts on the surface of the first shell 11 after passing through the second clamping hole 111.

[0114] This embodiment further provides a HVAC system, including the indoor unit 10 and the outdoor unit. The structure of the indoor unit 10 has been described in detail in the above embodiment, and will not be described here.

Claims

1. An indoor unit, characterized in that: It includes a housing, a motor bracket, a motor cover and a motor; The motor bracket is connected to the housing, and the motor cover is buckled on the motor bracket and detachably connected to the motor bracket to fix the motor between the motor bracket and the motor cover; Wherein, the motor cover is exposed at the bottom of the indoor unit.

2. The indoor unit according to claim 1, characterized in that: The motor cover covers a side of the motor bracket facing away from the housing.

3. The indoor unit according to claim 1, characterized in that: An air duct is formed in the housing, the air duct includes a return air port and a wind wheel cavity connected to each other, and a wind wheel is arranged in the wind wheel cavity and is connected to the motor by transmission; The motor cover is exposed at the return air outlet.

4. The indoor unit according to claim 1, characterized in that: One side of the motor cover is snap-connected to one side of the motor bracket, and the other side of the motor cover is detachably connected to the other side of the motor bracket via a connecting piece.

5. The indoor unit according to claim 1, characterized in that: The opposite sides of the motor cover and the opposite sides of the motor bracket are detachably connected via connecting pieces.

6. The indoor unit according to claim 4 or 5, characterized in that: The motor cover is provided with a connection hole, and the motor bracket is provided with a plug-in hole; A partial structure of the connecting piece can slide along the connecting hole and the plugging hole and be inserted into the connecting hole and the plugging hole to lock the motor cover and the motor bracket.

7. The indoor unit according to claim 6, characterized in that: The connecting member includes an operating portion and a plug-in portion connected to the operating portion; The plug-in portion can be slidably inserted into the connecting hole and the plug-in hole to relatively fix the motor cover and the motor bracket, and the operating portion is at least partially exposed outside the motor cover to be exposed at the bottom of the indoor unit.

8. The indoor unit according to claim 7, characterized in that: The operating portion includes a sliding section and a toggle section, and the plug-in portion and the toggle section are both connected to the sliding section; The sliding section is slidably matched with the motor cover, and at least a part of the structure of the toggle section is exposed outside the motor cover.

9. The indoor unit according to claim 8, characterized in that: A sliding space is formed on the motor cover, and the sliding section slides along the sliding space.

10. The indoor unit according to claim 9, characterized in that: The sliding space is formed on a side of the motor cover facing the motor bracket; A first through hole for the toggle section to pass through is formed on the bottom wall of the sliding space.

11. The indoor unit according to claim 9, characterized in that: The sliding space is formed on a side of the motor cover away from the motor bracket; The toggle section is located in the sliding space, and a second through hole for a part of the structure of the sliding section to pass through is opened on the bottom wall of the sliding space, so that the plug-in portion is connected to the sliding section.

12. The indoor unit according to claim 7, characterized in that: A limiting structure is arranged between the operating portion and the motor cover, and the limiting structure is used to limit the sliding stroke of the connecting member.

13. The indoor unit according to claim 7, characterized in that: The motor cover comprises a cover body and a stopper connected to the cover body; The stopper is used to stop the operating part in the length direction of the indoor unit.

14. The indoor unit according to any one of claims 1 to 5 and 7 to 13, characterized in that: A positioning structure is provided between the motor bracket and the motor cover; The positioning structure is used to limit the relative position of the motor bracket and the motor cover in the axial direction of the motor.

15. The indoor unit according to claim 14, characterized in that: The positioning structure includes a protruding portion and a positioning portion; The protruding portion is arranged on one of the motor bracket and the motor cover, the positioning portion is arranged on the other of the motor bracket and the motor cover, and the positioning portion is stopped at one side of the protruding portion along the axial direction of the motor.

16. The indoor unit according to any one of claims 1 to 5 and 7 to 13, characterized in that: The housing comprises a first housing and a second housing that are buckled together, and the motor bracket is detachably connected to the first housing.

17. A HVAC system, characterized in that: The indoor unit comprises the indoor unit according to any one of claims 1 to 16.

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