Indoor unit, and heating, ventilation and air conditioning device

Abstract

The present application provides an indoor unit, and a heating, ventilation and air conditioning device. The indoor unit provided by the present application comprises a housing, a blower wheel, a motor, and a motor cover; an air duct is formed in the housing; the blower wheel is mounted in the housing and located in the air duct; the motor is mounted in the housing and transmittingly connected to the blower wheel; the motor cover is detachably connected to the housing and matches the housing to form a mounting cavity for accommodating the motor; and a locating structure abutting against the motor is further connected to the housing, wherein the locating structure is configured to prevent the motor from detaching from the housing.

Description

Indoor unit and HVAC equipment

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on March 25, 2024, with application number 202420587270.6 and invention name “Indoor unit and HVAC equipment”, all contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of air conditioning, and in particular to an indoor unit and a heating and ventilation equipment using the indoor unit. Background Art

[0003] Embedded indoor units generally refer to indoor units installed on the ceiling, and in taller buildings and other structures, ceiling units are more commonly used.

[0004] In related technologies, an embedded indoor unit generally includes a shell, a wind wheel, a motor and a motor cover. The shell includes a casing and a panel. The bottom of the casing is open, and the panel cover is provided on the opening. An air duct is formed in the shell. The wind wheel and the motor are both installed in the shell, and the wind wheel is located in the air duct. The motor is connected to the wind wheel by transmission, and the motor cover is detachably connected to the shell and cooperates with the shell to form an installation cavity for accommodating the motor.

[0005] However, in the above-mentioned indoor unit, when the motor is being repaired, there is a risk that the motor will fall, which may cause injury to the maintenance personnel and reduce the overall safety of the above-mentioned indoor unit; moreover, in the above-mentioned indoor unit, when the motor is being installed, the motor is easy to fall off from the casing, so it is difficult to install the motor cover on the casing, which will reduce the assembly efficiency of the above-mentioned indoor unit. Summary of the Invention

[0006] The embodiments of the present application provide an indoor unit and HVAC equipment, which are configured to solve the problem in the related art that the motor of the indoor unit is easy to fall off when the motor is repaired and the installation of the motor is inconvenient.

[0007] On the one hand, the present application provides an indoor unit, including a shell, a wind wheel, a motor and a motor cover, wherein an air duct is formed in the shell; the wind wheel is installed in the shell and is located in the air duct; the motor is installed in the shell and is transmission-connected to the wind wheel; the motor cover is detachably connected to the shell, and cooperates with the shell to form an installation cavity for accommodating the motor; wherein, the shell is also connected to a positioning structure that abuts the motor, and the positioning structure is configured to prevent the motor from falling off the shell.

[0008] As an optional embodiment, the shell is provided with a first mounting groove with a notch facing downward, and the motor cover is arranged at the notch of the first mounting groove to cooperate with the shell to form a mounting cavity.

[0009] As an optional embodiment, the positioning structure is configured to prevent the motor from falling downward from the notch of the first mounting slot.

[0010] As an optional embodiment, the motor includes a main body and end cover structures located at both ends of the main body; the positioning structure abuts against the end cover structure and stops the end cover structure in the direction of downward disengagement.

[0011] As an optional embodiment, the positioning structure includes two positioning parts corresponding to each end cover structure, and the two positioning parts are spaced apart on opposite sides of the end cover structure to form a positioning opening between the two positioning parts, and the positioning opening is interference fit with the end cover structure.

[0012] As an optional implementation, one end of the positioning portion is connected to the notch of the first installation slot, and the other end extends in a direction away from the notch of the first installation slot.

[0013] As an optional embodiment, the motor cover is formed with a relief groove, which is configured to receive the positioning portion. In this way, on the one hand, the positioning portion can serve as a stop for the end cover structure, and on the other hand, the provision of the relief groove can, to a certain extent, prevent the motor cover from affecting the positioning portion, thereby enhancing the stopping effect of the positioning structure on the end cover structure.

[0014] As an optional embodiment, the surface of the positioning portion in contact with the end cap structure is a curved surface that matches the outer wall of the end cap structure. This can improve the reliability of the positioning portion and the end cap structure, thereby enhancing the stopping effect of the positioning portion on the end cap structure.

[0015] As an optional embodiment, the two positioning parts are respectively arranged on opposite sides of the inner wall of the first mounting groove; the positioning part is a positioning groove arranged on one of the inner wall of the first mounting groove and the end cover structure, and the other of the inner wall of the first mounting groove and the end cover structure is provided with a positioning protrusion embedded in the positioning groove.

[0016] As an optional embodiment, there is an angle between the depth direction of the positioning groove and the vertical direction. In this way, the cooperation between the positioning groove and the positioning protrusion can prevent the end cover structure from falling out.

[0017] As an optional embodiment, an anti-rotation structure is provided between the first mounting slot, which is located away from the wind wheel, and the end cap structure. The anti-rotation structure is configured to prevent the end cap structure from rotating relative to the first mounting slot. This can prevent the end cap structure from rotating to a certain extent, thereby improving the overall installation stability of the motor.

[0018] As an optional embodiment, the anti-rotation structure includes an anti-rotation portion disposed on one of the inner wall of the first mounting slot and the end cap structure, and an anti-rotation cavity is disposed on the other of the inner wall of the first mounting slot and the end cap structure; the anti-rotation portion extends into the anti-rotation cavity. Thus, the anti-rotation portion and the anti-rotation cavity cooperate to define the relative position of the end cap structure and the first mounting slot in the circumferential direction of the end cap structure, thereby preventing the end cap structure from rotating to a certain extent.

[0019] As an optional embodiment, two notches are formed on the inner wall of the first mounting slot, extending axially through the first mounting slot. The notches facilitate demolding during the manufacture of the volute, thereby improving the manufacturing efficiency of the volute and, in turn, the indoor unit provided herein.

[0020] As an optional embodiment, the outer side of the end cap structure is coated with an elastic layer. Thus, by coating the outer side of the end cap structure with the rubber layer, not only can the friction between the end cap structure and the first mounting groove be increased, thereby preventing the end cap structure from falling out of the first mounting groove to a certain extent, but it can also improve the convenience of assembling the end cap structure on the support portion. When the outer side of the end cap structure is elastic, the interference fit between the end cap structure and the two positioning portions can be better achieved, and under the elastic force of the elastic layer, the positioning portions and the end cap structure can cooperate more reliably.

[0021] As an optional embodiment, the shell includes a volute; the volute includes a wind wheel shell and a support portion, the wind wheel shell forms part of the inner wall of the air duct, the two ends of the wind wheel are rotatably connected to the wind wheel shell, and the support portion forms a first mounting groove.

[0022] As an optional embodiment, the housing includes a casing and a panel; the bottom of the casing is open, the panel cover is arranged at the opening, and the motor cover is exposed from the opening.

[0023] As an optional embodiment, the housing has a connecting surface that abuts the motor cover, and the plane where the centerline of the motor lies is coplanar with the connecting surface. In this way, by restricting the position between the support portion and the motor, it is possible to further improve the convenience of demolding during the manufacturing process of the volute, thereby improving the manufacturing efficiency of the volute.

[0024] As an optional embodiment, the housing has a connecting surface that abuts the motor cover, with the motor centerline and the connecting surface located at different heights. The height difference between the motor centerline and the connecting surface is less than or equal to a predetermined height, which is 0.5 times the maximum radius of the motor. By limiting the height difference between the motor centerline and the connecting surface, the volute can be easily demolded during manufacturing.

[0025] As an optional embodiment, the positioning structure and the housing are integrated into one structure, which can improve the manufacturing convenience of the volute.

[0026] On the other hand, the present application provides a HVAC equipment including the above-mentioned indoor unit.

[0027] In the indoor unit and HVAC equipment provided in the embodiment of the present application, a positioning structure is provided on the shell. During the inspection and maintenance of the motor, after the motor cover is removed, the position of the motor can be limited by the positioning structure, so as to prevent the motor from falling out of the shell to a certain extent, thereby preventing damage to maintenance personnel due to the falling out of the motor to a certain extent, and improving the safety of the indoor unit provided by this embodiment; in addition, during the assembly process of the indoor unit, when the motor is installed, due to the provision of the positioning structure, the motor is not easy to fall out of the shell, thereby facilitating the connection of the motor cover to the shell, and thus improving the assembly efficiency of the indoor unit provided by this embodiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG1 is a schematic structural diagram of a partial structure of an indoor unit provided in an embodiment of the present application;

[0029] FIG2 is a schematic diagram of the structure of FIG1 along direction A;

[0030] FIG3 is a cross-sectional view of FIG1 along the BB direction;

[0031] FIG4 is an enlarged schematic diagram of the local structure at point C in FIG3 ;

[0032] FIG5 is a cross-sectional view of another partial structure of the indoor unit provided in an embodiment of the present application;

[0033] FIG6 is a schematic diagram of the three-dimensional structure of a volute in an indoor unit provided in an embodiment of the present application;

[0034] FIG7 is an enlarged schematic diagram of the local structure at D in FIG6;

[0035] FIG8 is a schematic diagram of the three-dimensional structure of a motor cover in an indoor unit provided in an embodiment of the present application;

[0036] FIG9 is a schematic diagram of the three-dimensional structure of a motor in an indoor unit provided in an embodiment of the present application;

[0037] FIG10 is a schematic diagram of the three-dimensional structure of FIG9 from another perspective;

[0038] FIG11 is a schematic diagram of the three-dimensional structure of FIG6 from another perspective;

[0039] FIG12 is an enlarged schematic diagram of the local structure at point E in FIG11 .

[0040] Explanation of the accompanying symbols: 1. housing; 2. wind wheel; 3. motor; 4. motor cover; 5. heat exchanger; 6. mounting cavity; 7. positioning structure; 8. water receiving tray; 9. volute tongue; 11. housing; 12. air duct; 13. connecting surface; 31. main body; 32. end cover structure; 33. motor shaft; 41. second receiving groove; 42. cover body; 43. second extension portion; 44. second mounting groove; 45. first threaded hole; 46. second groove; 47. avoidance groove; 61. first mounting cavity; 62. second mounting cavity; 71. positioning portion; 72. positioning opening; 10. reinforcement plate; 20. anti-rotation cavity; 111. volute; 121. heat exchange cavity; 122. wind wheel cavity; 123. return air outlet; 124. air outlet; 711. first positioning section; 712. second positioning section; 1111. Wind wheel shell; 1112. Support portion; 1113. First receiving groove; 1114. Support body; 1115. First extension portion; 1116. First mounting groove; 1117. Second threaded hole; 1118. First groove; 1119. Notch. DETAILED DESCRIPTION

[0041] In the related art, embedded indoor units generally include a housing, a wind rotor, a motor, and a motor cover. The housing includes a casing and a panel. The bottom of the casing is open, and the panel cover is mounted on the opening. An air duct is formed within the casing. The wind rotor and the motor are both mounted within the casing, with the wind rotor positioned within the air duct. The motor is in transmission connection with the wind rotor. The motor cover is detachably connected to the casing and forms a mounting cavity with the casing to accommodate the motor. When the motor needs to be repaired, the panel is removed, and then the motor cover is removed from the supporting structure, allowing the motor to be removed for inspection. However, in such indoor units, when the motor cover is removed from the supporting structure during repair, there is a risk that the motor will fall, potentially injuring maintenance personnel and reducing the overall safety of the indoor unit. Furthermore, in such indoor units, when the motor is installed, after it is mated with the casing, the motor can easily fall out of the casing. This makes it difficult to install the motor cover on the casing, reducing the assembly efficiency of the indoor unit.

[0042] Therefore, the embodiments of the present application provide an indoor unit and HVAC equipment, which can prevent the motor from falling to a certain extent when repairing the motor and can improve the convenience of motor installation.

[0043] It should be noted that the indoor unit provided in the embodiments of the present application includes but is not limited to a ceiling unit.

[0044] Referring to Figures 1 to 4 , Figure 1 is a schematic diagram of a partial structure of an indoor unit provided in an embodiment of the present application, Figure 2 is a schematic diagram of the structure of Figure 1 along direction A, Figure 3 is a cross-sectional view of Figure 1 along direction BB, and Figure 4 is an enlarged schematic diagram of the partial structure at point C in Figure 3 . As shown in the figures, this embodiment provides an indoor unit comprising a housing 1, a wind wheel 2, and a motor 3.

[0045] Please refer to Figure 5, which is a cross-sectional view of another partial structure of the indoor unit provided in an embodiment of the present application. Taking the ceiling unit as an example, the housing 1 includes a casing 11 and a panel (not shown in the figure). The bottom of the casing 11 is open, and the panel cover is arranged at the bottom of the casing 11. An air duct 12 is formed between the casing 11 and the panel. The air duct 12 includes a heat exchange chamber 121 and a wind wheel chamber 122 that are connected. A heat exchanger 5 is arranged in the heat exchange chamber 121. The wind wheel 2 is installed in the casing 11 and is located in the wind wheel chamber 122. The panel is formed with return air ports 123 and air outlets 124 that are spaced apart. The return air ports 123 are connected to the heat exchange chamber 121, and the air outlets 124 are connected to the wind wheel chamber 122. The motor 3 is installed in the casing 11 and is in transmission connection with the wind wheel 2.

[0046] During the operation of the indoor unit, the external air flow enters the heat exchange chamber 121 through the return air port 123. Under the action of the motor 3 and the wind wheel 2, the air flow is heated or cooled through the heat exchanger 5, flows into the wind wheel chamber 122, and finally flows to the indoor environment through the air outlet 124, heating or cooling the indoor environment.

[0047] It should be noted that when the indoor unit provided in this embodiment is a ceiling unit, the housing 11 is embedded in the ceiling and the panel is flush with the ceiling. In other words, the return air vent 123 and the air outlet 124 are both located at the top of the indoor environment.

[0048] Generally, in order to secure the motor 3, a motor cover 4 is detachably connected to the bottom of the housing 11. The motor cover 4 is exposed through an opening at the bottom of the housing 11, and a mounting cavity 6 is formed between the motor cover 4 and the housing 11. The mounting cavity 6 is configured to accommodate the motor 3. By enclosing the mounting cavity 6 between the housing 11 and the motor cover 4, the motor 3 can be secured.

[0049] Please refer to Figures 6 to 8. Figure 6 is a schematic diagram of the three-dimensional structure of the volute in the indoor unit provided by the embodiment of the present application, Figure 7 is an enlarged schematic diagram of the local structure at D in Figure 6, and Figure 8 is a schematic diagram of the three-dimensional structure of the motor cover in the indoor unit provided by the embodiment of the present application. Specifically, the housing 11 includes a volute 111, and the volute 111 includes a wind wheel shell 1111 and a support portion 1112. The wind wheel shell 1111 and the support portion 1112 are connected together along the axial direction of the wind wheel 2. The inner wall of the wind wheel shell 1111 forms the cavity wall of the wind wheel cavity 122. The two ends of the wind wheel 2 are rotatably connected to the wind wheel shell 1111. A first receiving groove 1113 is formed on the support portion 1112. The first receiving groove 1113 is recessed toward the top, and the top structure of the motor 3 is located in the first receiving groove 1113.

[0050] The motor cover 4 is detachably connected to the lower end of the support portion 1112 , and a second receiving groove 41 is provided on the motor cover 4 . The second receiving groove 41 is recessed toward the bottom, and the second receiving groove 41 and the first receiving groove 1113 together form a partial cavity of the above-mentioned installation cavity 6 .

[0051] The motor cover 4 and the support portion 1112 can be detachably connected by fasteners such as screws, or can be connected by a snap connection, etc. In this embodiment, the connection method between the motor cover 4 and the support portion 1112 is not specifically limited.

[0052] As can be seen from the above, in the related art, during motor maintenance, after the motor cover 4 is removed, the motor can easily fall out of the housing. Therefore, in this embodiment, to overcome this drawback to a certain extent, a positioning structure 7 can be connected to the housing 1. The positioning structure 7 abuts against the motor 3 and is configured to prevent the motor 3 from falling out of the housing 1. Specifically, the positioning structure 7 is connected to the support portion 1112. In this way, by providing a positioning structure 7 on the shell 1, that is, by providing a positioning structure 7 on the support portion 1112, during the inspection and maintenance of the motor 3, after the motor cover 4 is removed, the position of the motor 3 can be limited by the positioning structure 7, so as to prevent the motor 3 from falling off from the shell 1 to a certain extent, thereby preventing damage to maintenance personnel due to the falling off of the motor 3 to a certain extent, and improving the safety of the indoor unit provided by this embodiment; in addition, during the assembly process of the indoor unit, when the motor 3 is installed, due to the provision of the positioning structure 7, the motor 3 is not easy to fall off from the shell 1, thereby facilitating the connection of the motor cover 4 to the shell 1, that is, connecting it to the support portion 1112, thereby improving the assembly efficiency of the indoor unit provided by this embodiment.

[0053] In a specific implementation of this embodiment, the motor cover 4 and the support portion 1112 are detachably connected via threaded fasteners, which will be described in detail below in conjunction with the specific structures of the motor cover 4 and the support portion 1112 .

[0054] Please refer to Figures 6 and 7. The support portion 1112 includes a support body 1114 and a first extension portion 1115. The first extension portion 1115 is connected to the outer edge of the support body 1114. The first receiving groove 1113 is formed on the support body 1114. Along the axial direction of the motor 3, two oppositely arranged first mounting grooves 1116 are formed on the first extension portion 1115. The notch of the first mounting groove 1116 is set downward, and the two first mounting grooves 1116 are located on opposite sides of the first receiving groove 1113.

[0055] Furthermore, the motor cover 4 includes a cover body 42 and a second extension 43, the second extension 43 is connected to the outer edge of the cover body 42, and the second receiving groove 41 is formed on the cover body 42. Along the axial direction of the motor 3, two oppositely arranged second mounting grooves 44 are formed on the second extension 43, and the notch of the second mounting groove 44 is set upward, and the two second mounting grooves 44 are located on opposite sides of the second receiving groove 41.

[0056] Among them, the installation cavity 6 includes a first installation cavity 61 and two second installation cavities 62. The first receiving groove 1113 and the second receiving groove 41 are buckled together to form the first installation cavity 61, and a first installation groove 1116 and a second installation groove 44 are buckled together to form a second installation cavity 62.

[0057] In addition, in order to connect the motor cover 4 with the support part 1112, a first threaded hole 45 is provided on the motor cover 4, and a second threaded hole 1117 is provided on the support part 1112. Threaded fasteners such as screws can pass through the first threaded hole 45 and the second threaded hole 1117 in sequence to detachably connect the motor cover 4 and the support part 1112 together, so as to detachably connect the motor cover 4 and the casing 11 together.

[0058] Please refer to Figures 9 and 10. Figure 9 is a schematic diagram of the three-dimensional structure of the motor in the indoor unit provided by an embodiment of the present application, and Figure 10 is a schematic diagram of the three-dimensional structure of Figure 9 from another perspective. As shown in the figures, the motor 3 includes a main body 31 and end cap structures 32. The end cap structures 32 are located at both ends of the main body 31. The main body 31 is located in the first installation cavity 61, and the end cap structures 32 are located in the second installation cavity 62.

[0059] It should be noted that the motor 3 also includes a motor shaft 33, which is connected to the wind wheel 2. Therefore, a first groove 1118 should also be provided on the first extension portion 1115, and the first groove 1118 cooperates with part of the structure of the motor shaft 33. A second groove 46 should also be provided on the second extension portion 43, and the second groove 46 cooperates with another part of the structure of the motor shaft 33. The second groove 46 and the first groove 1118 are snapped together to form a rotating cavity, and the rotating cavity rotates with the motor shaft 33.

[0060] When the indoor unit provided in this embodiment is a ceiling unit, as can be seen above, the notch of the first mounting slot 1116 faces downward, the notch of the second mounting slot 44 faces upward, and the motor cover 4 is positioned at the notch of the first mounting slot 1116 to engage with the housing 1. The positioning structure 7 is configured to prevent the motor 3 from dislodging downward from the notch of the first mounting slot 1116. In other words, in the indoor unit provided in this embodiment, the positioning structure 7 is configured to prevent the motor 3 from dislodging from the first mounting slot 1116, and the direction of dislodging of the motor 3 is downward. This prevents the motor 3 from falling and causing injury to the maintenance personnel after removing the motor cover 4 during maintenance. Furthermore, when the motor 3 is installed in the support portion 1112, the positioning structure 7 allows the motor 3 to be positioned within the first mounting slot 1116, thereby facilitating connection of the motor cover 4 to the support portion 1112.

[0061] Furthermore, as can be seen from the above description, the end cap structure 32 is located within the second mounting cavity 62, that is, the upper structure of the end cap structure 32 is located within the first mounting groove 1116, and the lower structure of the end cap structure 32 is located within the second mounting groove 44. The positioning structure 7 should abut against the end cap structure 32 and stop the end cap structure 32 in the downward direction of separation. In other words, the essential function of the positioning structure 7 is to prevent the end cap structure 32 from falling downward from the corresponding first mounting groove 1116, thereby preventing the motor 3 from falling out of the support portion 1112 and, to a certain extent, preventing the motor 3 from falling.

[0062] In some specific embodiments, the positioning structure 7 includes two positioning portions 71, one for each end cap structure 32. The two positioning portions 71 are spaced apart on opposite sides of the end cap structure 32 to form a positioning opening 72 therebetween. The positioning opening 72 has an interference fit with the end cap structure 32. In other words, the two positioning portions 71 are disposed on opposite sides of the opening of the first mounting slot 1116. This arrangement prevents the end cap structure 32 from falling downward from the first mounting slot 1116 through the interference fit between the positioning opening 72 and the end cap structure 32.

[0063] Furthermore, one end of the positioning portion 71 is connected to the notch of the first mounting slot 1116, and the other end of the positioning portion 71 extends away from the notch of the first mounting slot 1116. A retaining groove 47 is formed on the second extension portion 43 of the motor cover 4, and is configured to receive the positioning portion 71. Specifically, retaining grooves 47 are formed on opposite sides of the second mounting slot 44. This, on the one hand, allows the positioning portion 71 to act as a stop for the end cap structure 32; on the other hand, the provision of the retaining grooves 47 can, to a certain extent, prevent the motor cover 4 from interfering with the positioning portion 71, thereby enhancing the retaining effect of the positioning structure 7 on the end cap structure.

[0064] It is understood that when the positioning portions 71 and the end cap structure 32 are more reliably fitted, the clamping force exerted by the two positioning portions 71 on the end cap structure 32 is greater, and the positioning portions 71 provide a more significant stopping effect on the end cap structure 32. Therefore, in the specific implementation of this embodiment, the surface of the positioning portions 71 that contacts the end cap structure 32 is a curved surface that mates with the outer wall of the end cap structure 32. This improves the reliability of the fit between the positioning portions 71 and the end cap structure 32, thereby enhancing the stopping effect of the positioning portions 71 on the end cap structure 32.

[0065] In some embodiments, since the bottom end of the positioning portion 71 extends beyond the first extension portion 1115, in order to prevent the top end of the positioning portion 71 from breaking due to weak structural strength, a reinforcing plate 10 may be connected between the bottom end of the positioning portion 71 and the first extension portion 1115. The provision of the reinforcing plate 10 can improve the structural strength of the connection between the positioning portion 71 and the first extension portion 1115, thereby further enhancing the stopping effect of the positioning portion 71 on the end cover structure 32.

[0066] In which, the positioning portion 71 may include a first positioning segment 711 and a second positioning segment 712, the first positioning segment 711 is connected to the notch of the first mounting groove 1116, the second positioning segment 712 is connected to the side of the first positioning segment 711 facing the other positioning portion 71, and the size of the second positioning segment 712 in the axial direction of the motor 3 is smaller than the size of the second positioning segment 712 in this direction, the second positioning segment 712 is interference fit with the end cover structure 32 to prevent the end cover structure 32 from moving downward and disengaging from the first mounting groove 1116.

[0067] In some other embodiments, two positioning portions 71 are disposed on opposite sides of the inner wall of the first mounting slot 1116. The positioning portions 71 are positioning grooves (not shown) disposed on one of the inner wall of the first mounting slot 1116 and the end cap structure 32. A positioning protrusion (not shown) is disposed on the other of the inner wall of the first mounting slot 1116 and the end cap structure 32. The positioning protrusion is embedded in the positioning groove. In other words, the cooperation between the positioning groove and the positioning protrusion prevents the end cap structure 32 from falling downward from the first mounting slot 1116.

[0068] In order to prevent the end cap structure 32 from falling out of the first mounting groove 1116, in some embodiments, the depth direction of the positioning groove and the vertical direction should have an angle. In this way, the positioning groove and the positioning protrusion cooperate to prevent the end cap structure 32 from falling out.

[0069] It is understood that if the friction between the end cap structure 32 and the wall of the first mounting groove 1116 is high, it will also prevent the end cap structure 32 from falling downward from the first mounting groove 1116 to a certain extent. Moreover, if the outer side of the end cap structure 32 is elastic, it will also facilitate the assembly of the motor 3 on the support portion 1112. Therefore, to achieve both advantages, the outer side of the end cap structure 32 can be coated with an elastic layer. The elastic layer can be rubber. In this way, by coating the outer side of the end cap structure 32 with a rubber layer, the friction between the end cap structure 32 and the first mounting groove 1116 is increased, thereby preventing the end cap structure 32 from falling out of the first mounting groove 1116 to a certain extent. It also improves the convenience of assembling the end cap structure 32 on the support portion 1112. When the outer side of the end cap structure 32 is elastic, the interference fit between the end cap structure 32 and the two positioning portions 71 can be better achieved. Under the elastic force of the elastic layer, the positioning portions 71 and the end cap structure 32 can be more securely mated.

[0070] Since the outer peripheral surface of the end cover structure 32 is a smoothly transitioned rotating surface, when the end cover structure 32 is installed in the first installation groove 1116, the end cover structure 32 may rotate relative to the first installation groove 1116, affecting the overall installation stability of the motor 3.

[0071] Therefore, in some embodiments, an anti-rotation structure is provided between the first mounting slot 1116, which is located away from the wind wheel 2, and the end cap structure 32. The anti-rotation structure is configured to prevent the end cap structure 32 from rotating relative to the first mounting slot 1116. In this way, the end cap structure 32 can be prevented from rotating to a certain extent, thereby improving the overall installation stability of the motor 3.

[0072] Specifically, the anti-rotation structure includes an anti-rotation portion (not shown) disposed on one of the inner wall of the first mounting slot 1116 and the end cap structure 32. The other of the first mounting slot 1116 and the end cap structure 32 is provided with an anti-rotation cavity 20. The anti-rotation portion extends into the anti-rotation cavity 20. Thus, the cooperation between the anti-rotation portion and the anti-rotation cavity 20 can define the relative position of the end cap structure 32 and the first mounting slot 1116 in the circumferential direction of the end cap structure 32, thereby preventing the end cap structure 32 from rotating to a certain extent.

[0073] The depth direction of the anti-rotation cavity 20 is consistent with the radial direction of the motor 3 , that is, the depth direction of the anti-rotation cavity 20 is consistent with the radial direction of the end cover structure 32 .

[0074] In this embodiment, the anti-rotation portion is arranged on the end cover structure 32, and the anti-rotation cavity 20 is arranged on the bottom of the first mounting groove 1116, and when the depth direction of the anti-rotation cavity 20 is consistent with the radial direction of the motor 3, it means that the cavity mouth of the anti-rotation cavity 20 is arranged downward.

[0075] The anti-rotation portion may be a protruding structure, which is integrally provided with the elastic layer covering the outer side of the end cover structure 32 , and the protruding direction of the anti-rotation portion is consistent with the radial direction of the motor 3 .

[0076] It should be noted that, in some other embodiments, the anti-rotation portion and the anti-rotation cavity 20 may also be in other shapes. Here, the shapes of the anti-rotation portion and the anti-rotation cavity 20 are not specifically limited.

[0077] Please continue to refer to Figures 11 and 12. Figure 11 is a schematic diagram of the three-dimensional structure of Figure 6 from another perspective, and Figure 12 is an enlarged schematic diagram of the partial structure at E in Figure 11. In some embodiments, during the manufacturing process of the volute 111, in order to facilitate demolding, notches 1119 can be provided on opposite sides of the inner wall of the first mounting groove 1116. The notches 1119 penetrate the groove wall of the first mounting groove 1116 along the axial direction of the motor 3. In this way, the provision of the notches 1119 facilitates demolding during the manufacturing process of the volute 111, thereby improving the manufacturing efficiency of the volute 111 and, in turn, improving the manufacturing efficiency of the indoor unit provided in this embodiment.

[0078] Furthermore, the housing 1 has a connecting surface 13 that abuts the motor cover 4. Specifically, the support portion 1112 has a connecting surface 13 that abuts the motor cover 4. That is, the side of the first extension portion 1115 facing the second extension portion 43 forms the connecting surface 13, and the plane where the centerline of the motor 3 lies is coplanar with the connecting surface 13. In this way, by restricting the position between the support portion 1112 and the motor 3, the demolding convenience and manufacturing efficiency of the volute 111 can be further improved during the manufacturing process of the volute 111.

[0079] In some other embodiments, the centerline of the motor 3 and the connection surface 13 may be at different heights; in this case, the height difference between the centerline of the motor 3 and the connection surface 13 is less than or equal to a predetermined height, which is 0.5 times the maximum radius of the motor 3. By limiting the height difference between the centerline of the motor 3 and the connection surface 13, it is possible to improve the ease of demolding during the manufacturing process of the volute 111.

[0080] The height difference between the center line of the motor 3 and the connection surface 13 may be 0.5 times, 0.4 times, 0.3 times, 0.2 times, or 0.1 times the maximum radius of the motor 3. The height difference between the center line of the motor 3 and the connection surface 13 is not specifically limited.

[0081] In this embodiment, in order to improve the manufacturing convenience of the volute 111, the positioning structure 7 and the volute 111 are an integrated structure. The integrated molding method can be injection molding, etc., and the integrated molding method between the positioning structure 7 and the volute 111 is not specifically limited.

[0082] As shown in Figure 5 , the indoor unit provided in this embodiment further includes a water tray 8 , positioned below the heat exchanger 5 to prevent condensed water from flowing onto other electrical components. The water tray 8 is disposed below the heat exchanger 5 and into which the condensed water flows. The water tray 8 can be detachably connected to the housing 11, for example, by means of a connector such as a threaded fastener. The method of connection between the water tray 8 and the housing 11 is not specifically limited.

[0083] Furthermore, to prevent gas from circulating in the housing of the wind rotor 2 to a certain extent, a volute 9 can be provided on the side of the water receiving tray 8 close to the wind rotor 2. The provision of the volute 9 can guide the airflow to a certain extent, thereby preventing gas from circulating in the housing of the wind rotor 2 to a certain extent. The volute 9 and the water receiving tray 8 can be integrally formed or detachably connected. The integral forming method can be formed by injection molding or other methods, and the detachable connection method can be a snap-fit ​​connection such as a buckle. The connection method between the volute 9 and the water receiving tray 8 is not specifically limited.

[0084] This embodiment further provides a heating and ventilation device, comprising the indoor unit in the above embodiment, wherein the indoor unit has been described in detail in the above embodiment and will not be described in detail here.

[0085] It should be noted that the HVAC equipment provided in this embodiment should also include other components or modules such as an outdoor unit. Here, other components or modules in the HVAC equipment provided in this embodiment will not be introduced one by one.

Claims

1. An indoor unit, wherein: include: The shell is formed with an air duct; a wind wheel, mounted on the housing and located in the air duct; A motor, mounted on the housing and drivingly connected to the wind wheel; as well as a motor cover, detachably connected to the housing and cooperating with the housing to form a mounting cavity for accommodating the motor; Wherein, the housing is further connected with a positioning structure abutting against the motor, and the positioning structure is configured to prevent the motor from falling off from the housing.

2. The indoor unit according to claim 1, wherein: The housing is provided with a first mounting slot with a notch facing downward, and the motor cover is provided at the notch of the first mounting slot to cooperate with the housing to form the mounting cavity; The positioning structure is configured to prevent the motor from falling downward from the notch of the first installation slot.

3. The indoor unit according to claim 2, wherein: The motor comprises a main body and end cover structures located at both ends of the main body; The positioning structure abuts against the end cover structure and stops the end cover structure in a downward detachment direction.

4. The indoor unit according to claim 3, wherein: The positioning structure includes two positioning parts corresponding to each end cover structure, and the two positioning parts are spaced apart on opposite sides of the end cover structure to form a positioning opening between the two positioning parts, and the positioning opening is interference fit with the end cover structure.

5. The indoor unit according to claim 4, wherein: One end of the positioning portion is connected to the notch of the first mounting slot, and the other end extends away from the notch of the first mounting slot; The motor cover is formed with a avoiding groove, and the avoiding groove is configured to allow the positioning portion to be inserted. The indoor unit according to claim 4, wherein: The surface of the positioning portion in contact with the end cover structure is a curved surface adapted to the outer wall surface of the end cover structure.

7. The indoor unit according to claim 4, wherein: The two positioning parts are respectively arranged on opposite sides of the inner wall of the first installation groove; The positioning portion is a positioning groove provided on one of the inner wall of the first mounting groove and the end cover structure, and a positioning protrusion embedded in the positioning groove is provided on the other of the inner wall of the first mounting groove and the end cover structure.

8. The indoor unit according to claim 7, wherein: There is an angle between the depth direction of the positioning groove and the vertical direction.

9. The indoor unit according to any one of claims 3 to 8, wherein: An anti-rotation structure is provided between the first mounting slot, which is arranged away from the wind wheel, and the end cover structure. The anti-rotation structure is configured to prevent the end cover structure from rotating relative to the first mounting slot.

10. The indoor unit according to claim 9, wherein: The anti-rotation structure includes an anti-rotation portion provided on one of the inner wall of the first mounting groove and the end cover structure, and an anti-rotation cavity is provided on the other of the inner wall of the first mounting groove and the end cover structure; The anti-rotation portion extends into the anti-rotation cavity.

11. The indoor unit according to any one of claims 3 to 8, wherein: Two notches arranged opposite to each other are formed on the inner wall of the first installation slot, and the notches penetrate the slot wall of the first installation slot along the axial direction of the motor.

12. The indoor unit according to any one of claims 3 to 8, wherein: The outer side of the end cover structure is covered with an elastic layer.

13. The indoor unit according to any one of claims 2 to 8, wherein: The housing includes a volute; The volute includes a wind wheel shell and a support portion. The wind wheel shell forms part of the inner wall of the air duct. Both ends of the wind wheel are rotatably connected to the wind wheel shell. The support portion forms the first mounting groove.

14. The indoor unit according to any one of claims 1 to 8, wherein: The housing includes a casing and a panel; The bottom of the housing is open, the panel cover is arranged at the opening, and the motor cover is exposed from the opening.

15. The indoor unit according to any one of claims 1 to 8, wherein: The housing has a connection surface that abuts against the motor cover, and the plane where the center line of the motor is located is coplanar with the connection surface.

16. The indoor unit according to any one of claims 1 to 8, wherein: The housing has a connection surface that abuts against the motor cover, and the center line of the motor is at a different height from the connection surface; A height difference between a center line of the motor and the connecting surface is less than or equal to a preset height, and the preset height is 0.5 times the maximum radius of the motor.

17. The indoor unit according to any one of claims 1 to 8, wherein: The positioning structure and the housing are an integrated structure.

18. A heating and ventilation equipment, wherein: The indoor unit comprises the indoor unit according to any one of claims 1 to 17.

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