Indoor unit and heating and ventilation equipment

Abstract

The utility model provides an indoor unit and heating and ventilation equipment. The indoor unit comprises a shell, a wind wheel, a motor and a motor cover. An air channel is formed in the shell. The wind wheel is installed on the shell and located in the air duct. The motor is mounted on the shell and is in transmission connection with the wind wheel; the motor cover is detachably connected with the shell and is matched with the shell to form a mounting cavity for accommodating the motor; the shell is further connected with a positioning structure abutting against the motor, and the positioning structure is used for preventing the motor from being disengaged from the shell. The motor in the indoor unit is convenient to maintain and assemble.

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 device using the indoor unit. Background Art

[0002] Embedded indoor units generally refer to indoor units installed on the ceiling, and ceiling units are more commonly used in taller buildings.

[0003] In the related art, the embedded indoor unit generally includes a shell, a wind wheel, a motor and a motor cover. The shell includes a casing with an open bottom and a panel covering 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 driven by 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. When the motor needs to be repaired, the panel is removed, and then the motor cover is removed from the supporting structure. The motor can be removed for inspection.

[0004] However, in the above-mentioned indoor unit, when the motor is repaired, when the motor cover is removed from the supporting structure, there is a risk that the motor will fall, which may cause harm to the maintenance personnel, making the overall safety of the above-mentioned indoor unit low; moreover, in the above-mentioned indoor unit, when the motor is installed, after the motor is matched with the shell, the motor is easy to fall off the shell, so it is difficult to install the motor cover on the shell, which will make the assembly efficiency of the above-mentioned indoor unit low. Utility Model Content

[0005] The embodiments of the present application provide an indoor unit and HVAC equipment, which are used to solve the problems 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.

[0006] 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 a positioning structure abutting against the motor is also connected to the shell, and the positioning structure is used to prevent the motor from escaping from the shell.

[0007] 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; the positioning structure is used to prevent the motor from falling out of the notch of the first mounting groove downward.

[0008] As an optional implementation, 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 a downward disengagement direction.

[0009] As an alternative embodiment, the positioning structure includes two positioning portions provided corresponding to each end cover structure. The two positioning portions are spaced apart on opposite sides of the end cover structure to form a positioning opening therebetween, and the positioning opening is in interference fit with the end cover structure.

[0010] As an alternative embodiment, one end of the positioning portion is connected to the notch of the first installation groove, and the other end extends away from the notch of the first installation groove; the motor cover is formed with an avoidance groove for the positioning portion to be inserted. In this way, on the one hand, the positioning portion can play a certain stopping role on the end cover structure, and on the other hand, through the setting of the avoidance groove, the influence of the motor cover on the setting of the positioning portion can be avoided to a certain extent, so as to improve the stopping effect of the positioning structure on the end cover structure.

[0011] As an alternative embodiment, the surface of the positioning portion in contact with the end cover structure is an arc surface adapted to the outer wall surface of the end cover structure. In this way, the reliability of the cooperation between the positioning portion and the end cover structure can be improved to enhance the stopping effect of the positioning portion on the end cover structure.

[0012] As an alternative embodiment, the two positioning portions 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 installation 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 installation groove and the end cover structure.

[0013] As an alternative embodiment, there is an included 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 coming out.

[0014] As an alternative embodiment, an anti-rotation structure is provided between the first installation groove away from the wind wheel and the end cover structure, and the anti-rotation structure is used to prevent the end cover structure from rotating relative to the first installation groove. In this way, the rotation of the end cover structure can be avoided to a certain extent to improve the overall installation stability of the motor.

[0015] As an alternative embodiment, the anti-rotation structure includes an anti-rotation portion provided on one of the inner wall of the first installation groove and the end cover structure, and an anti-rotation cavity is provided on the other of the inner wall of the first installation groove and the end cover structure; the anti-rotation portion extends into the anti-rotation cavity. In this way, through the cooperation between the anti-rotation portion and the anti-rotation cavity, the relative position in the circumferential direction of the end cover structure between the end cover structure and the first installation groove can be limited to avoid the rotation of the end cover structure to a certain extent.

[0016] As an alternative implementation, two notches are formed on the inner wall of the first installation groove and are arranged opposite to each other. The notches penetrate the wall of the first installation groove along the axial direction of the motor. In this way, the demolding is facilitated during the manufacturing process of the volute, which can improve the manufacturing efficiency of the volute, and further improve the manufacturing efficiency of the indoor unit provided in this application.

[0017] As an alternative implementation, an elastic layer is coated on the outer side of the end cover structure. In this way, by coating a rubber layer on the outer side of the end cover structure, not only can the friction between the end cover structure and the first installation groove be increased to prevent the end cover structure from disengaging from the first installation groove to a certain extent; moreover, it makes it more convenient to assemble the end cover structure on the support part. When the outer side of the end cover structure has elasticity, the interference fit between the end cover structure and the two positioning parts can be better achieved, and under the elastic force of the elastic layer, the positioning part and the end cover structure can be more reliably matched.

[0018] As an alternative implementation, the housing includes a volute; the volute includes a wind wheel housing and a support part. The wind wheel housing forms part of the inner wall of the air duct, and both ends of the wind wheel are rotatably connected to the wind wheel housing, and the support part forms a first installation groove.

[0019] As an alternative implementation, the housing includes a casing and a panel; the bottom of the casing is open, the panel is covered at the opening, and the motor cover is exposed from the opening.

[0020] As an alternative implementation, 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. In this way, by restricting the position between the support part and the motor, the convenience of demolding can be further improved during the manufacturing process of the volute, and the manufacturing efficiency of the volute can be improved.

[0021] As an alternative implementation, the housing has a connection surface that abuts against the motor cover, and the center line of the motor and the connection surface are at different heights; the height difference between the center line of the motor and the connection surface is less than or equal to a preset height, and the preset height is 0.5 times the maximum radius of the motor. In this way, by restricting the height difference between the center line of the motor and the connection surface, the convenience of demolding can be improved during the manufacturing process of the volute.

[0022] As an alternative implementation, the positioning structure and the housing are of an integral structure. In this way, the manufacturing convenience of the volute can be improved.

[0023] On the other hand, this application provides a heating, ventilation and air conditioning (HVAC) equipment, including the above-mentioned indoor unit.

[0024] In the indoor unit and heating and ventilation equipment provided by the embodiments of the present application, by arranging a positioning structure on the housing, during the maintenance process of the motor, when the motor cover is removed, the position of the motor can be limited by the positioning structure, so as to avoid the motor from disengaging from the housing to a certain extent, thereby avoiding harm to maintenance personnel caused by the disengagement of the motor and improving the safety of the indoor unit provided by this embodiment; in addition, during the assembly process of the indoor unit, when installing the motor, due to the arrangement of the positioning structure, the motor is not easily disengaged from the housing, so that it is convenient to connect the motor cover to the housing, and the assembly efficiency of the indoor unit provided by this embodiment can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a schematic structural diagram of a partial structure of the indoor unit provided by the embodiment of the present application;

[0027] Figure 2 It is Figure 1 A schematic structural diagram along the A direction;

[0028] Figure 3 It is Figure 1 A sectional view along the B-B direction;

[0029] Figure 4 It is Figure 3 An enlarged schematic diagram of the partial structure at C in

[0030] Figure 5 It is a sectional view of another partial structure of the indoor unit provided by the embodiment of the present application;

[0031] Figure 6 It is a three-dimensional structural schematic diagram of the volute in the indoor unit provided by the embodiment of the present application;

[0032] Figure 7 It is Figure 6 An enlarged schematic diagram of the partial structure at D in

[0033] Figure 8 It is a three-dimensional structural schematic diagram of the motor cover in the indoor unit provided by the embodiment of the present application;

[0034] Figure 9 It is a three-dimensional structural schematic diagram of the motor in the indoor unit provided by the embodiment of the present application;

[0035] Figure 10 is Figure 9 a schematic diagram of a three-dimensional structure from another perspective;

[0036] Figure 11 is Figure 6 a schematic diagram of a three-dimensional structure from another perspective;

[0037] Figure 12 is Figure 11 an enlarged schematic diagram of the local structure at E in

[0038] Explanation of reference numerals:

[0039] 1. Housing; 2. Wind wheel; 3. Motor; 4. Motor cover; 5. Heat exchanger; 6. Installation cavity; 7. Positioning structure; 8. Water receiving tray; 9. Volute tongue;

[0040] 11. Machine shell; 12. Air duct; 13. Connection surface; 31. Main body part; 32. End cover structure; 33. Motor shaft; 41. Second receiving groove; 42. Cover body; 43. Second extension part; 44. Second installation groove; 45. First threaded hole; 46. Second groove; 47. Avoidance groove; 61. First installation cavity; 62. Second installation cavity; 71. Positioning part; 72. Positioning port; 10. Reinforcing plate; 20. Anti-rotation cavity;

[0041] 111. Volute; 121. Heat exchange cavity; 122. Wind wheel cavity; 123. Return air port; 124. Air outlet; 711. First positioning section; 712. Second positioning section;

[0042] 1111. Wind wheel housing; 1112. Support part; 1113. First receiving groove; 1114. Support body; 1115. First extension part; 1116. First installation groove; 1117. Second threaded hole; 1118. First groove; 1119. Notch. Detailed implementation manners

[0043] In the related art, an embedded indoor unit generally includes a housing, a wind wheel, a motor, and a motor cover. The housing includes a casing with an open bottom and a panel covering the opening. A wind duct is formed inside the casing. The wind wheel and the motor are both installed in the casing, and the wind wheel is located in the wind duct. The motor drives the wind wheel. The motor cover is detachably connected to the casing and cooperates with the casing to form an installation cavity for receiving the motor. When the motor needs to be repaired, the panel is removed, and then the motor cover is removed from the support structure, and the motor can be removed for inspection. However, in the above-mentioned indoor unit, when the motor cover is removed from the support structure during motor repair, the motor has a risk of falling, which may cause injury to the maintenance personnel, resulting in relatively low overall safety of the above-mentioned indoor unit; moreover, in the above-mentioned indoor unit, when the motor is installed, after the motor is fitted with the casing, the motor is easily detached from the casing. Therefore, it is difficult to install the motor cover on the casing, which will result in relatively low assembly efficiency of the above-mentioned indoor unit.

[0044] Therefore, an embodiment of the present application provides an indoor unit and a heating, ventilation, and air conditioning (HVAC) device, which can avoid the motor from falling to a certain extent during motor repair and can improve the convenience of motor installation.

[0045] It should be noted that the indoor unit provided by the embodiment of the present application includes, but is not limited to, a ceiling-mounted unit.

[0046] Please refer to Figures 1 to 4 , Figure 1 which is a schematic structural diagram of a partial structure of the indoor unit provided by the embodiment of the present application. Figure 2 is Figure 1 a schematic structural diagram along the A direction. Figure 3 is Figure 1 a cross-sectional view along the B-B direction. Figure 4 is Figure 3 a schematic enlarged view of the partial structure at C in

[0047] Please refer to Figure 5 , Figure 5 which is a cross-sectional view of another partial structure of the indoor unit provided by the embodiment of the present application. Taking a ceiling-mounted unit as an example, the housing 1 includes a casing 11 with an open bottom and a panel (not shown in the figure) covering the bottom of the casing 11. A wind duct 12 is formed between the casing 11 and the panel. The wind duct 12 includes a communicating heat exchange cavity 121 and a wind wheel cavity 122. A heat exchanger 5 is provided in the heat exchange cavity 121. The wind wheel 2 is installed in the casing 11 and is located in the wind wheel cavity 122. The panel is formed with spaced-apart air return openings 123 and air outlet openings 124. The air return openings 123 communicate with the heat exchange cavity 121, and the air outlet openings 124 communicate with the wind wheel cavity 122. The motor 3 is installed in the casing 11 and is drivingly connected to the wind wheel 2.

[0048] During the operation of the indoor unit, the external air flow enters the heat exchange chamber 121 through the air return port 123. Under the action of the motor 3 and the impeller 2, after the air flow is heated or cooled by the heat exchanger 5, it flows into the impeller chamber 122 and finally flows to the indoor environment through the air outlet 124 to heat or cool the indoor environment.

[0049] 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. That is to say, the above-mentioned air return port 123 and air outlet 124 are both located at the top position of the indoor environment.

[0050] Generally, in order to fix the motor 3, a motor cover 4 is detachably connected to the bottom of the housing 11. The motor cover 4 is exposed through the open mouth at the bottom of the housing 11, and an installation cavity 6 for accommodating the motor 3 is formed between the motor cover 4 and the housing 11. By enclosing and forming the installation cavity 6 between the housing 11 and the motor cover 4, the motor 3 can be fixed.

[0051] Please refer to Figures 6 to 8 , Figure 6 which is a three-dimensional structure diagram of the volute in the indoor unit provided by the embodiment of the present application, Figure 7 is Figure 6 a partial enlarged structure diagram at D in Figure 8 and is a three-dimensional structure diagram of the motor cover in the indoor unit provided by the embodiment of the present application. Specifically, the housing 11 includes a volute 111. The volute 111 includes a volute housing 1111 and a support portion 1112 connected together along the axial direction of the impeller 2. The inner wall of the volute housing 1111 forms the wall of the impeller chamber 122. Both ends of the impeller 2 are rotatably connected to the volute housing 1111. A first receiving groove 1113 recessed towards the top is formed on the support portion 1112, and the top structure of the motor 3 is located in the first receiving groove 1113.

[0052] The motor cover 4 is detachably connected to the lower end of the support portion 1112, and a second receiving groove 41 recessed towards the bottom is provided on the motor cover 4. The second receiving groove 41 and the first receiving groove 1113 jointly form a part of the cavity of the above-mentioned installation cavity 6.

[0053] Among them, the motor cover 4 and the support portion 1112 can be detachably connected by fasteners such as screws, or can be connected by connection methods such as snap connection. In this embodiment, the connection method between the motor cover 4 and the support portion 1112 is not specifically limited.

[0054] As can be seen from the above, in the related art, during the overhaul of the motor, after removing the motor cover 4, the motor is extremely likely to be disengaged from the housing. Therefore, in this embodiment, in order to overcome this defect to a certain extent, a positioning structure 7 that abuts against the motor 3 can be further connected to the housing 1. The positioning structure 7 is used to prevent the motor 3 from disengaging from the housing 1. Specifically, the positioning structure 7 is connected to the support portion 1112. In this way, by providing the positioning structure 7 on the housing 1, that is, by providing the positioning structure 7 on the support portion 1112, during the overhaul of the motor 3, when the motor cover 4 is removed, the position of the motor 3 can be limited by the positioning structure 7, so as to avoid the motor 3 from disengaging from the housing 1 to a certain extent, thereby avoiding harm to the maintenance personnel caused by the disengagement of the motor 3 and improving the safety of the indoor unit provided in this embodiment. In addition, during the assembly process of the indoor unit, when installing the motor 3, due to the provision of the positioning structure 7, the motor 3 is not easily disengaged from the housing 1, so that it is convenient to connect the motor cover 4 to the housing 1, that is, to the support portion 1112, which can improve the assembly efficiency of the indoor unit provided in this embodiment.

[0055] In the specific implementation manner of this embodiment, the motor cover 4 and the support portion 1112 are detachably connected by threaded fasteners. The following will introduce in detail in combination with the specific structures of the motor cover 4 and the support portion 1112.

[0056] Please combine Figure 6 and Figure 7 , the support portion 1112 includes a support body 1114 and a first extension portion 1115 connected to the outer edge of the support body 1114. A first receiving groove 1113 is formed on the support body 1114. Two relatively arranged first mounting grooves 1116 are formed on the first extension portion 1115 along the axial direction of the motor 3. The openings of the first mounting grooves 1116 are arranged downward, and the two first mounting grooves 1116 are located on opposite sides of the first receiving groove 1113.

[0057] Further, the motor cover 4 includes a cover body 42 and a second extension portion 43 connected to the outer edge of the cover body 42. A second receiving groove 41 is formed on the cover body 42. Two relatively arranged second mounting grooves 44 are formed on the second extension portion 43 along the axial direction of the motor 3. The openings of the second mounting grooves 44 are arranged upward, and the two second mounting grooves 44 are located on opposite sides of the second receiving groove 41.

[0058] 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. A first mounting groove 1116 and a second mounting groove 44 are buckled together to form a second installation cavity 62.

[0059] In addition, in order to connect the motor cover 4 and the support portion 1112, a first threaded hole 45 is provided on the motor cover 4, and a second threaded hole 1117 is provided on the support portion 1112. Threaded fasteners such as screws can sequentially pass through the first threaded hole 45 and the second threaded hole 1117 to detachably connect the motor cover 4 and the support portion 1112 together, so as to detachably connect the motor cover 4 and the housing 11 together.

[0060] Please refer to Figure 9 and Figure 10 , Figure 9 which is a three-dimensional structural schematic diagram of the motor in the indoor unit provided by the embodiment of the present application. Figure 10 is Figure 9 a three-dimensional structural schematic diagram from another perspective. As shown in the figure, the motor 3 includes a main body portion 31 and end cap structures 32 located at both ends of the main body portion 31. The main body portion 31 is located in the first installation cavity 61, and one end cap structure 32 is located in a second installation cavity 62.

[0061] It should be noted that the motor 3 further includes a motor shaft 33 connected to the wind wheel 2. Therefore, a first groove 1118 that cooperates with a partial structure of the motor shaft 33 should also be provided on the first extension portion 1115, and a second groove 46 that cooperates with another partial structure of the motor shaft 33 should also be provided on the second extension portion 43. The second groove 46 and the first groove 1118 are buckled together to form a rotation cavity that rotationally cooperates with the motor shaft 33.

[0062] When the indoor unit provided by this embodiment is a ceiling-mounted unit, as can be seen from the above, the notch of the first installation groove 1116 faces downward, and the notch of the second installation groove 44 faces upward. The motor cover 4 is covered on the notch of the first installation groove 1116 to cooperate with the housing 1; and the positioning structure 7 is used to prevent the motor 3 from slipping out downward from the notch of the first installation groove 1116. That is to say, in the indoor unit provided by this embodiment, the positioning structure 7 is provided to prevent the motor 3 from slipping out of the first installation groove 1116, and the slipping-out direction of the motor 3 is downward. In this way, when the motor 3 is being repaired, after removing the motor cover 4, it can to a certain extent prevent the motor 3 from falling and causing injury to the repair personnel; moreover, when the motor 3 is being installed, after installing it in the support portion 1112, due to the existence of the positioning structure 7, the motor 3 can be located in the first installation groove 1116, which facilitates connecting the motor cover 4 to the support portion 1112.

[0063] Further, as can be seen from the above, the end - cover structure 32 is located within the second installation cavity 62. That is, the upper structure of the end - cover structure 32 is located within the first installation groove 1116, and the lower structure of the end - cover structure 32 is located within the second installation groove 44. The positioning structure 7 should abut against the end - cover structure 32 and stop it in the downward detachment direction. That is to say, the essential function of the positioning structure 7 is to prevent the end - cover structure 32 from being disengaged downward from the corresponding first installation groove 1116, so as to prevent the motor 3 from being disengaged from the support portion 1112, and to avoid the motor 3 from falling to a certain extent.

[0064] In some specific embodiments, the positioning structure 7 includes two positioning portions 71 provided corresponding to each end - cover structure 32. The two positioning portions 71 are spaced apart on opposite sides of the end - cover structure 32 to form a positioning opening 72 therebetween. The positioning opening 72 is in interference fit with the end - cover structure 32. That is to say, the two positioning portions 71 are respectively arranged on opposite sides of the notch of the first installation groove 1116. With such an arrangement, through the interference fit between the positioning opening 72 and the end - cover structure 32, the end - cover structure 32 can be prevented from being disengaged downward from the first installation groove 1116.

[0065] Further, one end of the positioning portion 71 is connected to the notch of the first installation groove 1116, and the other end extends away from the notch of the first installation groove 1116. An avoidance groove 47 is formed on the second extension portion 43 of the motor cover 4. The avoidance groove 47 is used for the insertion of the positioning portion 71. Specifically, avoidance grooves 47 are formed on both opposite sides of the second installation groove 44. In this way, on the one hand, the positioning portion 71 can play a certain stopping role on the end - cover structure 32, and on the other hand, through the setting of the avoidance groove 47, the influence of the motor cover 4 on the setting of the positioning portion 71 can be avoided to a certain extent, so as to improve the stopping effect of the positioning structure 7 on the end - cover structure.

[0066] It can be understood that when the positioning portion 71 is in reliable contact with the end - cover structure 32, the clamping force generated by the two positioning portions 71 on the end - cover structure 32 is relatively large, and the stopping effect of the positioning portion 71 on the end - cover structure 32 is more significant. Therefore, in the specific embodiments of this embodiment, the surface of the positioning portion 71 in contact with the end - cover structure 32 is an arc surface adapted to the outer wall surface of the end - cover structure 32. In this way, the reliability of the cooperation between the positioning portion 71 and the end - cover structure 32 can be improved, so as to enhance the stopping effect of the positioning portion 71 on the end - cover structure 32.

[0067] In some embodiments, since the bottom end of the positioning portion 71 extends beyond the first extension portion 1115, in order to avoid, to a certain extent, the top end of the positioning portion 71 from breaking due to weak structural strength, a reinforcing plate 10 can be connected between the bottom end of the positioning portion 71 and the first extension portion 1115. By providing the reinforcing plate 10, the structural strength of the connection between the positioning portion 71 and the first extension portion 1115 can be improved, and thus the blocking effect of the positioning portion 71 on the end cover structure 32 can be further enhanced.

[0068] Among them, the positioning portion 71 can include a first positioning section 711 and a second positioning section 712. The first positioning section 711 is connected to the notch of the first installation groove 1116, and the second positioning section 712 is connected to the side of the first positioning section 711 facing another positioning portion 71. Moreover, the dimension of the second positioning section 712 in the axial direction of the motor 3 is smaller than its dimension in this direction. The second positioning section 712 is in interference fit with the end cover structure 32 to prevent the end cover structure 32 from disengaging downward from the first installation groove 1116.

[0069] In some other embodiments, the two positioning portions 71 are respectively arranged on opposite sides of the inner wall of the first installation groove 1116; the positioning portion 71 is a positioning groove (not shown in the figure) provided on one of the inner wall of the first installation groove 1116 and the end cover structure 32, and a positioning protrusion (not shown in the figure) inserted into the positioning groove is provided on the other of the inner wall of the first installation groove 1116 and the end cover structure 32. That is to say, through the cooperation of the positioning groove and the positioning protrusion, the end cover structure 32 can be prevented from disengaging downward from the first installation groove 1116.

[0070] In order to prevent the end cover structure 32 from disengaging downward from the first installation groove 1116, in some embodiments, there should be 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 32 from disengaging.

[0071] It can be understood that if the frictional force between the end cover structure 32 and the groove wall of the first mounting groove 1116 is relatively large, it will also prevent the end cover structure 32 from disengaging downward from the first mounting groove 1116 to a certain extent. Moreover, if the outer side of the end cover structure 32 has elasticity, it is also convenient to assemble the motor 3 on the support portion 1112. Therefore, in order to satisfy these two advantages simultaneously, an elastic layer can be coated on the outer side of the end cover structure 32. Among them, the elastic layer can be rubber. In this way, by coating a rubber layer on the outer side of the end cover structure 32, not only can the frictional force between the end cover structure 32 and the first mounting groove 1116 be increased to prevent the end cover structure 32 from disengaging from the first mounting groove 1116 to a certain extent; moreover, it makes it more convenient to assemble the end cover structure 32 on the support portion 1112. When the outer side of the end cover structure 32 has elasticity, the interference fit between the end cover structure 32 and the two positioning portions 71 can be better achieved, and under the elastic force of the elastic layer, the positioning portion 71 and the end cover structure 32 can be more reliably matched.

[0072] Since the outer peripheral surface of the end cover structure 32 is a smoothly transitioning rotating surface, when the end cover structure 32 is installed into the first mounting groove 1116, it may cause the end cover structure 32 to rotate relative to the first mounting groove 1116, affecting the overall installation stability of the motor 3.

[0073] Therefore, in some embodiments, an anti-rotation structure is provided between the first mounting groove 1116 and the end cover structure 32 that is set away from the wind wheel 2. The anti-rotation structure is used to prevent the end cover structure 32 from rotating relative to the first mounting groove 1116. In this way, it can avoid the end cover structure 32 from rotating to a certain extent to improve the overall installation stability of the motor 3.

[0074] Specifically, the anti-rotation structure includes an anti-rotation portion (not shown in the figure) provided on one of the inner groove wall of the first mounting groove 1116 and the end cover structure 32, and an anti-rotation cavity 20 is provided on the other of the inner groove wall of the first mounting groove 1116 and the end cover structure 32; the anti-rotation portion extends into the anti-rotation cavity 20. In this way, through the cooperation of the anti-rotation portion and the anti-rotation cavity 20, the relative position between the end cover structure 32 and the first mounting groove 1116 in the circumferential direction of the end cover structure 32 can be limited to avoid the end cover structure 32 from rotating to a certain extent.

[0075] Among them, 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.

[0076] In this embodiment, the anti-rotation portion is provided on the end cover structure 32, the anti-rotation cavity 20 is provided 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 orifice of the anti-rotation cavity 20 is downward.

[0077] The anti-rotation part can be a protruding structure integrally provided with an elastic layer covering the outer side of the end cover structure 32, and the protruding direction of the anti-rotation part is consistent with the radial direction of the motor 3.

[0078] It should be noted that in some other embodiments, the anti-rotation part and the anti-rotation cavity 20 can also be of other shapes. Here, the shapes of the anti-rotation part and the anti-rotation cavity 20 are not specifically limited.

[0079] Please continue to combine Figure 11 and Figure 12 , Figure 11 is Figure 6 a schematic diagram of a three-dimensional structure from another perspective, Figure 12 is Figure 11 a partially enlarged schematic diagram of the structure at E in. In some embodiments, during the manufacturing and forming process of the volute 111, in order to facilitate demolding, notches 1119 can be respectively provided on opposite sides of the inner wall of the first installation groove 1116, and the notches 1119 penetrate through the wall of the first installation groove 1116 along the axial direction of the motor 3. In this way, through the setting of the notches 1119, it is convenient to demold during the manufacturing process of the volute 111, which can improve the manufacturing efficiency of the volute 111, and further improve the manufacturing efficiency of the indoor unit provided in this embodiment.

[0080] Furthermore, the housing 1 has a connection surface 13 that abuts against the motor cover 4. Specifically, the support portion 1112 has a connection surface 13 that abuts against the motor cover 4, that is, the side of the first extension portion 1115 facing the second extension portion 43 forms the connection surface 13, and the plane where the center line of the motor 3 is located is coplanar with the connection surface 13. In this way, by restricting the position between the support portion 1112 and the motor 3, the convenience of demolding can be further improved during the manufacturing process of the volute 111, and the manufacturing efficiency of the volute 111 can be improved.

[0081] In some other embodiments, the height where the center line of the motor 3 is located can be different from that of the connection surface 13; at this time, the height difference between the center line of the motor 3 and the connection surface 13 is less than or equal to a preset height, and the preset height is 0.5 times the maximum radius of the motor 3. In this way, by restricting the height difference between the center line of the motor 3 and the connection surface 13, the convenience of demolding can be improved during the manufacturing process of the volute 111.

[0082] Among them, the height difference between the center line of the motor 3 and the connection surface 13 can be 0.5 times, 0.4 times, 0.3 times, 0.2 times, 0.1 times the maximum radius of the motor 3. Here, the height difference between the center line of the motor 3 and the connection surface 13 is not specifically limited.

[0083] In this embodiment, in order to improve the manufacturing convenience of the volute 111, the positioning structure 7 and the volute 111 are of an integral structure. The integral molding method can be injection molding or the like. Here, the integral molding method adopted between the positioning structure 7 and the volute 111 is not specifically limited.

[0084] As Figure 5 shown, in the indoor unit provided in this embodiment, in order to prevent the condensed water generated by the heat exchanger 5 from flowing onto other electrical components, the indoor unit provided in this embodiment further includes a water receiving tray 8 disposed below the heat exchanger 5, and the condensed water generated by the heat exchanger 5 will flow into the water receiving tray 8. Among them, the water receiving tray 8 can be detachably connected to the housing 11, for example, detachably connected together through a connecting member such as a threaded fastener. Here, the connection method between the water receiving tray 8 and the housing 11 is not specifically limited.

[0085] Moreover, in order to prevent the gas from circulating in the housing of the impeller 2, a volute tongue 9 can be provided on one side of the water receiving tray 8 close to the impeller 2. By providing the volute tongue 9, it can play a certain guiding role in the air flow, so as to avoid the gas from circulating in the housing of the impeller 2 to a certain extent. Among them, the volute tongue 9 and the water receiving tray 8 can be integrally formed or detachably connected. The integral molding method can be formed by injection molding or the like, and the detachable connection method can be a snap connection such as a snap fastener. Here, the connection method between the volute tongue 9 and the water receiving tray 8 is not specifically limited.

[0086] This embodiment also provides a heating, ventilation and air conditioning (HVAC) device, including the indoor unit in the above embodiment. Among them, the indoor unit has been introduced in detail in the above embodiment, and will not be elaborated here.

[0087] It should be noted that the HVAC device provided in this embodiment should also include other components or modules such as an outdoor unit. Here, the other components or modules in the HVAC device provided in this embodiment will not be introduced one by one.

Claims

1. An indoor unit, characterized in that: include: A housing is formed with an air duct, and the housing is provided with a first mounting slot with a notch downward; A wind wheel, mounted on the housing and located in the wind duct; A motor is mounted on the housing and is drivingly connected to the wind wheel; and A motor cover, which is arranged at the notch of the first mounting groove to cooperate with the housing to form a mounting cavity for accommodating the motor; Wherein, the housing is also connected with a positioning structure abutting against the motor, and the positioning structure is used to prevent the motor from falling out downward from the notch of the first mounting slot.

2. The indoor unit according to claim 1, characterized in that: 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 disengagement direction.

3. The indoor unit according to claim 2, characterized in that: 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.

4. The indoor unit according to claim 3, characterized in that: One end of the positioning portion is connected to the notch of the first mounting slot, and the other end extends in a direction away from the notch of the first mounting slot; The motor cover is formed with a avoidance groove, and the avoidance groove is used for the positioning part to be inserted.

5. The indoor unit according to claim 3, characterized in that: The surface of the positioning portion in contact with the end cover structure is a curved surface matched with the outer wall surface of the end cover structure.

6. The indoor unit according to claim 3, characterized in that: 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 arranged 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.

7. The indoor unit according to claim 6, characterized in that: There is an angle between the depth direction of the positioning groove and the vertical direction.

8. The indoor unit according to any one of claims 2 to 7, characterized in that: An anti-rotation structure is provided between the first installation slot disposed away from the wind wheel and the end cover structure, and the anti-rotation structure is used to prevent the end cover structure from rotating relative to the first installation slot.

9. The indoor unit according to claim 8, characterized in that: The anti-rotation structure comprises an anti-rotation portion arranged on one of the inner wall of the first mounting groove and the end cover structure, and an anti-rotation cavity is arranged 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.

10. The indoor unit according to any one of claims 2 to 7, characterized in that: 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.

11. The indoor unit according to any one of claims 2 to 7, characterized in that: The outer side of the end cover structure is coated with an elastic layer.

12. The indoor unit according to any one of claims 2 to 7, characterized in that: The housing includes a volute; The volute comprises a wind wheel shell and a support portion, wherein the wind wheel shell forms a portion of the inner wall of the air duct, two ends of the wind wheel are rotatably connected to the wind wheel shell, and the support portion forms the first mounting groove.

13. The indoor unit according to any one of claims 1 to 7, characterized in that: The housing comprises 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.

14. The indoor unit according to any one of claims 1 to 7, characterized in that: The shell 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.

15. The indoor unit according to any one of claims 1 to 7, characterized in that: The housing has a connection surface abutting 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.

16. The indoor unit according to any one of claims 1 to 7, characterized in that: The positioning structure and the housing are an integrated structure.

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

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