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 and a motor, and a heat exchange air duct and a heat dissipation air duct communicating with the heat exchange air duct are formed in the shell; the wind wheel is installed on the shell and located in the heat exchange air duct. The motor is installed in the shell and located in the heat dissipation air channel, the motor is in transmission connection with the wind wheel, airflow in the heat exchange air channel can flow into the heat dissipation air channel, and efficient heat dissipation of the motor is achieved.

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] In the related art, the indoor unit generally includes a casing, a wind wheel and a motor. A heat exchange duct is formed in the casing. The wind wheel is located in the wind wheel cavity of the heat exchange duct, and the motor is transmission-connected to the wind wheel. The motor is arranged on a partition forming the wind wheel cavity. The airflow in the external environment can cool down the motor through the return air outlet of the heat exchange duct.

[0003] However, in the above-mentioned indoor unit, the heat dissipation effect of the motor is not good, which affects the overall performance of the indoor unit. Utility Model Content

[0004] The embodiments of the present application provide an indoor unit and HVAC equipment, which are used to solve the problem of poor heat dissipation of the motor in the related art.

[0005] On the one hand, the present application provides an indoor unit, including a shell, a wind wheel and a motor, wherein a heat exchange air duct and a heat dissipation air duct connected to the heat exchange air duct are formed in the shell; the wind wheel is installed in the shell and located in the heat exchange air duct; the motor is installed in the shell and located in the heat dissipation air duct, and the motor is connected to the wind wheel in a transmission manner.

[0006] As an optional embodiment, the housing includes a machine housing and a motor housing connected together; the motor housing is located in the heat dissipation duct and forms a motor cavity, and the motor is arranged in the motor cavity; the heat dissipation duct includes an upstream heat dissipation duct and a downstream heat dissipation duct, the motor is located in the downstream heat dissipation duct, and the upstream heat dissipation duct and the downstream heat dissipation duct are connected through an opening. In this way, the low-temperature airflow generated by the heat exchanger can flow into the upstream heat dissipation duct, and then flow to the motor located in the downstream heat dissipation duct through the opening, so that the low-temperature airflow can efficiently dissipate the heat generated by the motor.

[0007] As an optional embodiment, the motor housing includes a motor bracket, and the motor bracket includes a baffle structure; the baffle structure forms part of the duct wall of the upstream heat dissipation duct. In this way, the upstream heat dissipation duct and the downstream heat dissipation duct can be defined by setting the baffle structure, so that the low-temperature airflow can flow through the upstream heat dissipation duct and then flow into the downstream heat dissipation duct to dissipate heat for the motor.

[0008] As an optional implementation, the side of the partition structure is in contact with the housing, so as to improve the sealing of the upstream heat dissipation duct, to a certain extent prevent the low-temperature airflow from escaping, thereby improving the utilization efficiency of the low-temperature airflow and further improving the heat dissipation effect of the motor.

[0009] As an optional embodiment, the opening is an opening provided on the partition structure, and part of the structure of the motor is exposed through the opening, so that the low-temperature airflow can contact the motor more quickly when flowing into the upstream heat dissipation duct, so as to effectively dissipate the heat of the motor.

[0010] As an optional embodiment, the opening includes a heat dissipation hole arranged on the shell wall of the motor shell. In this way, after the low-temperature airflow flows into the upstream heat dissipation air duct, it can flow into the downstream heat dissipation air duct through the heat dissipation hole to dissipate heat from the motor.

[0011] As an optional embodiment, the motor bracket also includes a bracket body connected to the partition structure, the extension direction of the bracket body is consistent with the circumference of the motor, and the bracket body protrudes upward relative to the partition structure; the motor cavity includes a motor slot opened on the bracket body, and the motor is arranged in the motor slot; the heat dissipation hole includes a first heat dissipation hole, and the first heat dissipation hole is opened on the slot wall of the motor slot; wherein the top surface of the bracket body and the top surface of the partition structure jointly form part of the duct wall of the upstream heat dissipation duct. Since the gas flows from the top to the bottom, therefore, when the bracket body protrudes toward the top relative to the partition structure, the low-temperature airflow can quickly flow to the first heat dissipation hole opened on the bracket body when it flows to the motor bracket, and then flow to the inside of the downstream heat dissipation duct to dissipate the heat of the motor.

[0012] As an optional embodiment, the motor includes a motor body and end caps connected to both ends of the motor body in the axial direction; the distance between the top of the bracket body and the plate surface of the partition structure is equal to the radius of the motor body. In this way, the distance between the partition structure and the top of the bracket body can be limited so that more low-temperature airflow can quickly flow into the first heat dissipation hole to achieve efficient heat dissipation of the motor.

[0013] As an optional embodiment, the first heat dissipation hole extends along the circumference of the motor and covers at least a quarter of the outer peripheral wall of the motor, so that more low-temperature airflow can quickly flow to the surface of the motor to quickly dissipate heat from the motor.

[0014] As an optional embodiment, there are multiple first heat dissipation holes; the multiple first heat dissipation holes include multiple groups of heat dissipation holes arranged at intervals along the circumference of the motor, and each heat dissipation hole group includes at least one first heat dissipation hole arranged at intervals along the axial direction of the motor; in any heat dissipation hole group, the projection area of ​​the first heat dissipation hole located at the end of the heat dissipation hole group on the motor extends from the peripheral wall of the motor body to the end face of the end cover. In this way, the low-temperature airflow can flow to the motor body and the end cover at the same time, so that a larger area of ​​the motor surface can be in contact with the low-temperature airflow, which can further improve the heat dissipation efficiency of the motor.

[0015] As an optional embodiment, the motor bracket also includes a side panel structure connected to the bracket body, the side panel structure is located between the motor and the wind wheel; the heat exchange duct and the heat dissipation duct are located on both sides of the side panel structure, and the heat dissipation duct is formed by the casing and the side panel structure. In this way, by setting up the side panel structure, the two heat exchange ducts and the heat dissipation duct can be separated independently, so that the low-temperature airflow can flow directly to the upstream heat dissipation duct, and combined with the partition mechanism and the structural design of the bracket body, the upper structure of the motor bracket can play a certain guiding role for the low-temperature airflow, thereby improving the heat dissipation efficiency of the motor.

[0016] As an optional implementation, the indoor unit provided in this embodiment also includes a heat exchanger; the heat exchange air duct includes a wind wheel cavity and a heat exchange cavity, the wind wheel is arranged in the wind wheel cavity, and the heat exchanger is arranged in the heat exchange cavity; the side plate structure extends in the direction from the wind wheel cavity to the heat exchange cavity, and the side plate structure covers the wind wheel cavity in its own extension direction. Further, the sealing of the heat dissipation air duct can be improved, and while guiding the low-temperature airflow, more low-temperature airflow can flow into the upstream heat dissipation air duct, and then flow into the downstream heat dissipation air duct through the first heat dissipation hole to effectively dissipate the heat of the motor.

[0017] As an optional implementation, the indoor unit provided in this embodiment further includes a heat exchanger, the heat exchange air duct includes a heat exchange cavity, the heat exchanger is arranged in the heat exchange cavity, and at least part of the heat dissipation holes are located on the side of the motor housing facing the heat exchange cavity. In this way, the heat dissipation holes are closer to the air inlet side of the heat exchanger, so that the low-temperature airflow can quickly flow to the motor surface, thereby improving the heat dissipation efficiency of the motor.

[0018] As an optional embodiment, the heat exchange air duct also includes an air outlet connected to the heat exchange cavity; the inlet end of the heat dissipation air duct is located on the side of the heat exchanger away from the air outlet. In this way, the low-temperature airflow can quickly flow to the location of the motor to dissipate heat from the motor.

[0019] As an optional implementation, the heat exchange air duct further includes a wind wheel cavity connected to the heat exchange cavity, and the wind wheel is located in the wind wheel cavity; the heat dissipation air duct is located on one side of the heat exchange air duct and extends in the direction from the heat exchange cavity to the wind wheel cavity. In this way, even if the heat dissipation air duct is formed, the overall size of the indoor unit itself does not change, so that the overall structure of the indoor unit provided in this embodiment is more compact.

[0020] As an optional implementation, the heat exchange air duct further includes a return air port connected to the wind wheel cavity; the outlet end of the heat dissipation air duct is arranged adjacent to the return air port. In this way, at least part of the airflow flowing out of the outlet end of the heat dissipation air duct can be drawn into the heat exchange air duct by the wind wheel through the return air port, thereby improving the operating efficiency of the indoor unit provided in this embodiment.

[0021] As an optional embodiment, the motor housing further includes a motor cover, which is buckled under the motor bracket, and the motor cover and the motor bracket enclose a motor cavity; the heat dissipation hole further includes a second heat dissipation hole, and the second heat dissipation hole is opened on the motor cover. In this way, when the low-temperature airflow flows into the motor cavity from the first heat dissipation hole, the motor is cooled down, and then it can flow out of the motor cavity through the second heat dissipation hole.

[0022] As an optional implementation, there are multiple second heat dissipation holes, and the multiple second heat dissipation holes are arranged in rows and columns. In this way, the airflow after cooling the motor can flow out quickly through the second heat dissipation, so that the heat dissipation effect of the motor is better.

[0023] As an optional embodiment, the casing includes a first shell and a second shell connected to each other; the motor casing is connected to the first shell, and the first shell, the second shell and the motor casing cooperate to define a heat exchange air duct and a heat dissipation air duct.

[0024] On the other hand, the present application provides a HVAC device, including the above-mentioned indoor unit.

[0025] In the indoor unit and HVAC equipment provided in the embodiment of the present application, a heat dissipation duct connected to the heat exchange duct is formed in the shell, and the motor is located in the heat dissipation duct. In this way, the airflow in the heat exchange duct can flow into the heat dissipation duct to dissipate the heat of the motor. Compared with the method of cooling the motor by the external airflow entering through the return air port in the related art, in the embodiment of the present application, the airflow in the heat exchange duct can be used to dissipate the heat of the motor, so that the heat dissipation effect of the motor is better, thereby making the indoor unit provided in the embodiment of the present application have better performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the structure of an indoor unit provided in an embodiment of the present application;

[0028] Figure 2 An exploded view of the indoor unit provided in an embodiment of the present application;

[0029] Figure 3 A structural schematic diagram of a first partial structure of an indoor unit provided in an embodiment of the present application;

[0030] Figure 4 A schematic plan view of a second partial structure of an indoor unit provided in an embodiment of the present application;

[0031] Figure 5 for Figure 4 Cross-sectional view along AA direction;

[0032] Figure 6 A schematic diagram of a three-dimensional structure of a third partial structure of an indoor unit provided in an embodiment of the present application;

[0033] Figure 7 for Figure 5 A magnified schematic diagram of the local structure at B in the middle;

[0034] Figure 8 A schematic diagram of the structure of the motor housing and the motor in the indoor unit provided in the embodiment of the present application;

[0035] Fig. 9 A schematic diagram of a three-dimensional structure of a fourth partial structure of an indoor unit provided in an embodiment of the present application;

[0036] Fig.10 for Fig. 9 A magnified schematic diagram of the local structure at C in the middle;

[0037] Fig.11 for Figure 5 A magnified schematic diagram of the local structure at point D in the middle.

[0038] Description of reference numerals:

[0039] 1. Shell; 2. Wind wheel; 3. Heat exchanger; 4. Motor; 5. Cooling duct; 6. Electric control box; 7. Protective grille;

[0040] 10. Indoor unit; 11. Casing; 12. Motor casing; 41. Motor body; 42. End cover; 51. Upstream cooling air duct; 52. Downstream cooling air duct; 61. Box cover; 62. Box body;

[0041] 111, first shell; 112, second shell; 113, heat exchange air duct; 121, motor cavity; 122, heat dissipation hole; 123, motor bracket; 124, motor cover;

[0042] 1111, top shell; 1112, side panel; 1121, concave cavity; 1131, return air port; 1132, air outlet; 1133, wind wheel cavity; 1134, pressure diffusion cavity; 1135, heat exchange cavity; 1221, first heat dissipation hole; 1222, second heat dissipation hole; 1231, motor slot; 1232, bracket body; 1233, first connecting part; 1234, second connecting part; 1235, side panel structure; 1236, first wall; 1237, second wall; 1238, partition structure. DETAILED DESCRIPTION

[0043] In order to make the objectives, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0044] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0045] In the related art, the indoor unit generally includes a housing, a wind wheel and a motor. A heat exchange air duct is formed in the housing. The wind wheel is located in the wind wheel cavity of the heat exchange air duct. The motor is connected to the wind wheel by transmission. The motor is arranged on a partition forming the wind wheel cavity. The airflow in the external environment can cool down the motor through the return air port of the heat exchange air duct. However, in the above-mentioned indoor unit, the heat dissipation effect of the motor is not good, which affects the overall performance of the indoor unit.

[0046] Therefore, the embodiments of the present application provide an indoor unit and HVAC equipment, which can solve the problem of poor heat dissipation of the above-mentioned motor.

[0047] The embodiments of the present application will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0048] See also Figure 1 and Figure 2 , Figure 1 A schematic diagram of the structure of the indoor unit provided in the embodiment of the present application, Figure 2 This is an exploded view of the indoor unit provided in the embodiment of the present application. Figure 3 This is a schematic diagram of the first partial structure of the indoor unit provided in the embodiment of the present application. Figures 1 to 3 As shown, this embodiment provides an indoor unit 10, including a shell 1, the shell 1 includes a casing 11 and a motor casing 12, the casing 11 includes a first casing 111 and a second casing 112, the first casing 111 and the second casing 112 are connected together along the up and down direction of the indoor unit 10, and the first casing 111 includes a top casing 1111 and a side plate 1112 connected between the top casing 1111 and the second casing 112, the motor casing 12 is connected to the first casing 111, and is enclosed with the first casing 111 and the second casing 112 to form a heat exchange duct 113, the two ends of the heat exchange duct 113 are a return air port 1131 and an air outlet 1132, and a wind wheel cavity 1133, a pressure diffusion cavity 1134 and a heat exchange cavity 1135 which are connected in sequence are formed between the return air port 1131 and the air outlet 1132.

[0049] Among them, a wind wheel 2 is arranged in the wind wheel cavity 1133, and a heat exchanger 3 is arranged in the heat exchange cavity 1135.

[0050] See also Figures 4 to 6 , Figure 4 A schematic plan view of a second partial structure of an indoor unit provided in an embodiment of the present application, Figure 5 for Figure 4 Cross-sectional view along AA direction, Figure 6 This is a schematic diagram of a three-dimensional structure of a third partial structure of an indoor unit provided in an embodiment of the present application. Figure 6 The arrow direction in the figure is the flow direction of the low temperature airflow. Generally, in order to enable the wind wheel 2 to rotate, a motor cavity 121 is formed in the motor housing 12, and a motor 4 connected to the wind wheel 2 is arranged in the motor cavity 121.

[0051] Specifically, in order to utilize the low-temperature airflow generated by the heat exchanger 3 to dissipate the heat of the motor 4, in this embodiment, a heat dissipation duct 5 is formed between the housing 1 and the heat exchanger 3, the heat dissipation duct 5 is connected to the heat exchange duct 113, and the motor 4 and the motor housing 12 are both located in the heat dissipation duct 5. In this way, the low-temperature airflow generated by the peripheral side of the heat exchanger 3 can flow out of the heat exchange cavity 1135 and flow to the motor 4 located in the heat dissipation duct 5 to dissipate the heat of the motor 4, so that the indoor unit 10 provided in this embodiment has better performance.

[0052] It should be explained that when the indoor unit 10 provided in this embodiment is working, the heat exchanger 3 will generate a low-temperature airflow which is lower than the heating temperature when the motor is working. Since the air pressure in the heat exchange cavity 1135 is greater than the air pressure at the bottom of the motor housing 12, the low-temperature airflow generated by the heat exchanger 3 can be caused to flow to the heat dissipation duct 5 under the action of the air pressure difference, thereby utilizing the low-temperature airflow to cool down and dissipate the heat of the high-temperature motor 4.

[0053] Please refer to Figure 3 , where the direction of the arrow is the direction of air flow when the indoor unit 10 is working. Therefore, when the indoor unit 10 provided in this embodiment is in a cooling state, the air flow first contacts the side of the heat exchanger 3 away from the air outlet 1132, and then flows out through the heat exchanger 3. Therefore, the side of the heat exchanger 3 away from the air outlet 1132 is closer to the heat dissipation duct 5. Therefore, in order to enable the low-temperature air flow to flow quickly to the position of the motor 4 to dissipate the heat of the motor 4, in some optional embodiments, the inlet end of the heat dissipation duct 5 can be located on the side of the heat exchanger 3 away from the air outlet 1132, that is, the low-temperature air flow located on the air inlet side of the heat exchanger 3 can flow into the heat dissipation duct 5 to cool the motor 4.

[0054] See also Figure 6In a specific implementation manner of the present embodiment, the heat dissipation duct 5 is located on one side of the heat exchange duct 113 along the length direction of the indoor unit 10, and extends in the direction from the heat exchange chamber 1135 to the wind wheel chamber 1133, that is, the heat dissipation duct 5 and the heat exchange duct 113 are arranged side by side in the length direction of the indoor unit 10. In this way, even if the heat dissipation duct 5 is formed, the overall size of the indoor unit 10 itself does not change, so that the overall structure of the indoor unit 10 provided in this embodiment is more compact.

[0055] It should be noted that the length direction of the indoor unit 10 is Figure 1 , Figure 2 , Figure 4 and Figure 6 In the following description, the length direction of the indoor unit 10 will not be repeatedly restricted.

[0056] It is understandable that when the motor 4 is running, the wind wheel 2 will rotate, thereby sucking the external airflow into the heat exchange air duct 113 through the return air port 1131. Therefore, in order to reuse the low-temperature airflow flowing out of the motor housing 12, the outlet end of the heat dissipation air duct 5 can be arranged adjacent to the return air port 1131. Since the air pressure at the return air port 1131 is lower than that at the outlet 1132, when the outlet end of the heat dissipation air duct 5 is arranged adjacent to the return air port 1131, a lower air pressure can be formed at the outlet end of the heat dissipation air duct 5, thereby effectively forming a pressure difference with the inlet of the heat dissipation air duct, so that part of the low-temperature airflow at the outlet 1132 will flow along the heat dissipation air duct 5 under the action of the pressure difference, thereby achieving cooling and heat dissipation of the motor 4.

[0057] Since the motor is arranged in the motor cavity 121 inside the motor housing 12, in order to allow the low-temperature airflow generated by the heat exchanger 3 to flow to the motor 4, it is necessary to open a heat dissipation hole 122 that penetrates the side wall of the motor housing 12 on the side wall of the motor housing 12. Specifically, the heat dissipation duct 5 includes an upstream heat dissipation duct 51 and a downstream heat dissipation duct 52 that are connected. The fan 4 is located in the downstream heat dissipation duct 52, and the upstream heat dissipation duct 51 and the downstream heat dissipation duct 52 are connected through an opening. In this way, the low-temperature airflow generated by the heat exchanger 3 can flow into the upstream heat dissipation duct 51, and then flow through the opening to the motor 4 located in the downstream heat dissipation duct 52, so that the low-temperature airflow can efficiently dissipate the heat generated by the motor 4.

[0058] In some optional embodiments, the opening may be an opening disposed on the top of the motor housing 12, through which a portion of the structure of the motor 4 is exposed, wherein at least one half of the structure located at the upper portion of the motor 4 is exposed.

[0059] In some other optional embodiments, the opening may also be a heat dissipation hole 122 provided on the wall of the motor housing 12 .

[0060] In the specific implementation process, the heat dissipation efficiency of the motor 4 can also be improved by other means, such as shortening the flow path of the low-temperature airflow. Therefore, in some embodiments, at least a part of the heat dissipation hole 122 can be located on the side of the motor housing 12 facing the heat exchange cavity 1135. In this way, the heat dissipation hole 122 is closer to the air inlet side of the heat exchanger 3, so that the low-temperature airflow can flow quickly to the surface of the motor 4, thereby improving the heat dissipation efficiency of the motor 4.

[0061] In order to fix the motor 4, generally, the motor housing 12 includes a motor bracket 123, the motor bracket 123 is connected to the first shell 111, the motor cavity 121 includes a motor slot 1231 opened at the bottom of the motor bracket 123, the motor 4 is arranged in the motor slot 1231 and is located below the motor bracket 123, wherein, in order to facilitate the disassembly and assembly of the motor bracket 123, a detachable connection method can be adopted between the motor bracket 123 and the first shell 111, for example, the motor bracket 123 and the first shell 111 are detachably connected through a screw structure, or the motor bracket 123 and the first shell 111 are detachably connected through a snap-on structure, or the motor bracket 123 and the first shell 111 are detachably connected through a combination of a screw structure and a snap-on structure.

[0062] Among them, the screw-connected structure can be a threaded fastener such as a screw. By opening coaxial threaded holes on the motor bracket 123 and the first shell 111 respectively, the threaded fasteners pass through the threaded holes on the motor bracket 123 and the threaded holes on the first shell 111 in sequence, so that the motor bracket 123 and the first shell 111 can be detachably connected together.

[0063] The snap-fit ​​structure can be a snap-fit ​​structure provided on one of the motor bracket 123 and the first housing 111, and a snap-fit ​​structure provided on the other of the motor bracket 123 and the first housing 111, and the motor bracket 123 and the first housing 111 are detachably connected together through the cooperation of the snap-fit ​​structure and the snap-fit ​​structure. The connection method between the motor bracket 123 and the first housing 111 is not specifically limited.

[0064] It should be noted that the above-mentioned up and down directions are Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 The up and down directions are consistent.

[0065] It can be seen from the above that the motor 4 is arranged in the motor slot 1231. Therefore, the motor slot 1231 forms a partial structure of the motor cavity 121. When it is necessary to make the motor cavity 121 communicate with the heat dissipation duct 5, it is necessary to open a heat dissipation hole connecting the motor slot 1231 and the heat dissipation duct 5 on the motor bracket 123. Figure 7 , Figure 7 for Figure 5 The enlarged schematic diagram of the local structure at B in the figure. The heat dissipation hole 122 includes a first heat dissipation hole 1221, which is opened on the slot wall of the motor slot 1231, and the first heat dissipation hole 1221 is connected to the upstream heat dissipation air duct 51 and the downstream heat dissipation air duct 52. In this way, the low-temperature airflow generated by the heat exchanger 3 can flow to the surface of the motor 4 through the first heat dissipation hole 1221 to dissipate heat from the motor 4.

[0066] Please continue to see Figure 8 , Figure 8 This is a schematic diagram of the structure of the motor housing and the motor in the indoor unit provided in the embodiment of the present application. Figure 8 As shown, in some optional embodiments, the first heat dissipation hole 1221 may be a strip hole, and the extension direction of the first heat dissipation hole 1221 is consistent with the circumference of the motor 4. Since the heat dissipated by the motor 4 during operation is generated by the stator winding, and the circumference of the stator winding is the circumference of the motor 4, therefore, the first heat dissipation hole 1221 is set as a strip hole extending along the circumference of the motor 4, so that the extension direction of the strip hole is consistent with the circumference of the stator winding, which is more conducive to heat dissipation of the motor 4.

[0067] In order to facilitate description of the coverage area of ​​the first heat dissipation hole 1221 in the circumferential direction of the motor 4, the coverage area of ​​the first heat dissipation hole 1221 in the circumferential direction of the motor 4 can be quantified as the projection area of ​​the first heat dissipation hole 1221 on the outer peripheral wall of the motor. For example, the first heat dissipation hole 1221 extends along the circumference of the motor and covers at least one quarter of the outer peripheral wall of the motor 4. In this way, more low-temperature airflow can quickly flow to the surface of the motor 4 to quickly dissipate heat from the motor 4.

[0068] When the area of ​​the heat dissipation region is large, it is not easy to open only one first heat dissipation hole 1221 on the motor bracket 123. Therefore, in some specific embodiments, multiple first heat dissipation holes 1221 can be opened on the motor bracket 123. The multiple first heat dissipation holes 1221 include multiple groups of heat dissipation holes arranged at intervals along the circumference of the motor 4, and each heat dissipation hole group includes multiple first heat dissipation holes 1221 arranged at intervals along the axial direction of the motor 4. In this way, when the area of ​​the heat dissipation region is large, it is convenient to open the first heat dissipation holes 1221.

[0069] It should be noted that the motor 4 includes a motor body 41 and end covers 42 connected to the two axial ends of the motor body 41. In order to further improve the heat dissipation efficiency of the motor 4, in some optional embodiments, in any heat dissipation hole group, the first heat dissipation hole 1221 located at the end of the heat dissipation hole group extends from the peripheral wall of the motor body 41 to the end face of the end cover 42, that is, the peripheral wall of the motor body 41, the peripheral wall of the end cover 42 and part of the end face of the end cover 42 can be exposed through the first heat dissipation hole 1221 located at the end of the heat dissipation hole group. In this way, the low-temperature airflow can flow to the peripheral side and end of the motor 4 at the same time, so that a larger area of ​​the surface of the motor 4 can be in contact with the low-temperature airflow, which can further improve the heat dissipation efficiency of the motor 4.

[0070] The end of the motor 4 can be understood as the end face of the end cover structure that is arranged away from the wind wheel 2, and the extension direction of the end face is consistent with the vertical direction.

[0071] Please continue to see Figure 8 In order to improve the overall structural compactness of the indoor unit 10 provided in this embodiment, the above-mentioned motor bracket 123 may include a bracket body 1232, and the motor slot 1231 and the first heat dissipation hole 1221 are both formed on the bracket body 1232; the extension direction of the bracket body 1232 is consistent with the circumference of the motor 4, and the bracket body 1232 can also be connected with a first connection part 1233 and a second connection part 1234, the first connection part 1233 and the second connection part 1234 are respectively connected to the two sides of the bracket body 1232, the first connection part 1233 can be detachably connected to the first shell 111 by a threaded fastener such as a screw, and the second connection part 1234 is a card protrusion, which can be snap-connected with the first shell 111, and the detachable connection between the motor bracket 123 and the first shell 111 is achieved by the connection between the first connection part 1233 and the first shell 111 and the connection between the second connection part 1234 and the first shell 111.

[0072] Please continue to see Fig. 9 and Fig.10 , Fig. 9 This is a schematic diagram of a three-dimensional structure of a fourth partial structure of an indoor unit provided in an embodiment of the present application. Fig.10 for Fig. 9A schematic diagram of the enlarged local structure at C in the middle. In the present embodiment, in order to enable the low-temperature airflow to flow quickly into the first heat dissipation hole 1221, that is, it is necessary to enable the low-temperature airflow to contact with the bracket body 1232 first, therefore, it is necessary to enable the bracket body 1232 to be in a higher position, thus, the above-mentioned motor bracket 123 also includes a baffle structure 1238 connected to the bracket body 1232, and the bracket body 1232 protrudes toward the top relative to the baffle structure 1238, so that the top surface of the bracket body 1232 and the top surface of the baffle structure 1238 jointly form a part of the duct wall of the upstream heat dissipation duct 51. Therefore, it is not difficult to understand that when the bracket body 1232 protrudes from the baffle structure 1238, the low-temperature airflow can contact with the bracket body 1232 first, therefore, the low-temperature airflow can flow quickly into the first heat dissipation hole 1221, and then flow into the downstream heat dissipation duct 52 through the first heat dissipation hole 1221 to dissipate heat to the motor 4.

[0073] It should be noted that when the above-mentioned opening is open, the motor bracket 123 may only include the partition structure 1238, and the opening is formed on the partition structure 1238, and the top surface of the partition structure 1238 forms a partial duct wall of the upstream heat dissipation duct 51.

[0074] When the motor bracket 123 includes a partition structure 1238, the connection method between the partition structure 1238 and the housing 11 will affect the sealing of the heat dissipation duct 5. Therefore, in this embodiment, the side of the partition structure 1238 abuts against the inner wall of the housing 11. Specifically, part of the side of the partition structure 1238 abuts against the side plate 1112, and the other part of the side of the partition structure 1238 abuts against the first housing 111. In this way, the sealing of the upstream heat dissipation duct 51 is better, so that more low-temperature airflow can flow through the upstream heat dissipation duct 51 to the first heat dissipation hole 1221, and then flow to the downstream heat dissipation duct 52 to dissipate heat for the motor 4, which can further improve the heat dissipation efficiency of the motor 4.

[0075] From the above, it can be known that the low-temperature airflow contacts the bracket body 1232 first, and in order to avoid the distance between the top of the bracket body 1232 and the plate surface of the partition structure 1238 being too small, a small part of the airflow contacts the partition structure 1238 and is lost, so that the distance between the top of the bracket body 1232 and the plate surface of the partition structure 1238 can be limited. Therefore, in a specific implementation of this embodiment, the distance between the top of the bracket body 1232 and the plate surface of the partition structure 1238 is equal to the radius of the motor body 41. In this way, it can be ensured that the distance between the top of the bracket body 1232 and the partition structure 1238 is large, so that most of the low-temperature airflow can flow through the first heat dissipation hole 1221 to the downstream heat dissipation duct 52 to dissipate heat for the motor.

[0076] Furthermore, the motor bracket 123 further includes a side plate structure 1235 connected to the bracket body 1232, the first connection portion 1233 is connected to a side of the side plate structure 1235 close to the heat exchange cavity 1135, and the side plate structure 1235 is located between the wind wheel 2 and the motor 4, so that the heat exchange air duct 113 and the heat dissipation air duct 5 are located on opposite sides of the side plate structure 1235. Specifically, the heat exchange air duct 113 and the heat dissipation air duct 5 are located on opposite sides of the side plate structure 1235 along the thickness direction thereof, and the heat dissipation air duct 5 is formed by the first shell 111, the second shell 112 and the side plate structure 1235. That is, part of the side wall of the heat dissipation air duct 5 is formed on the side plate structure 1235. In this way, the heat exchange duct 113 and the heat dissipation duct 5 are relatively independent, so that the low-temperature airflow can flow directly to the upstream heat dissipation duct 51, and combined with the structural design of the partition structure 1238 and the bracket body 1232, the upper structure of the motor bracket 123 can play a certain guiding role for the low-temperature airflow, thereby improving the heat dissipation efficiency of the motor 4.

[0077] In order to match the extension direction of the heat dissipation duct 5, in this embodiment, the side plate structure 1235 extends in the direction from the wind wheel cavity 1133 to the heat exchange cavity 1135, and the side plate structure 1235 covers the wind wheel cavity 1133 in its own extension direction. In this way, the sealing performance of the heat dissipation duct 5 is better, and while guiding the low-temperature airflow, more low-temperature airflow can flow into the upstream heat dissipation duct 51, and then flow into the downstream heat dissipation duct 52 through the first heat dissipation hole 1221 to effectively dissipate heat for the motor 4.

[0078] Specifically, the peripheral wall surface of the side plate structure 1235 includes a first wall surface 1236 disposed near the heat exchange cavity 1135 and a second wall surface 1237 connected to the first wall surface 1236; the second wall surface 1237 abuts against the inner wall of the top shell 1111. In this way, the side plate structure 1235 can be effectively fitted with the top shell 1111 to avoid a certain gap between the side plate structure 1235 and the top shell 1111, which can prevent the airflow in the upstream heat dissipation duct 51 from leaking through the gap to a certain extent, so as to further improve the heat dissipation effect on the motor 4.

[0079] Generally, in order to fix the motor 4 and prevent the motor 4 from slipping, a motor cover 124 is buckled under the motor bracket 123, and a motor cavity 121 is formed between the motor cover 124 and the motor bracket 123 to fix the motor 4 between the motor bracket 123 and the motor cover 124.

[0080] Please continue to see Fig.11 , Fig.11 for Figure 5The enlarged schematic diagram of the local structure at D in the middle. After the low-temperature airflow flows into the motor cavity 121 through the first heat dissipation hole 1221, it needs to flow out of the motor cavity 121. Therefore, it is also necessary to open a heat dissipation hole on the motor cover 124. Therefore, the heat dissipation hole 122 should also include a second heat dissipation hole 1222 opened on the motor cover 124. In this way, when the low-temperature airflow flows into the motor cavity 121 through the first heat dissipation hole 1221 and cools the motor 4, it can flow out of the motor cavity 121 through the second heat dissipation hole 1222.

[0081] In order to speed up the flow speed of the airflow after the motor 4 is cooled, the second heat dissipation holes 1222 can be set to multiple, and the multiple second heat dissipation holes 1222 are arranged in rows and columns. In this way, the airflow after the motor 4 is cooled can flow out quickly through the second heat dissipation holes 1222, so that the heat dissipation effect of the motor 4 is better.

[0082] In some optional embodiments, in order to facilitate the opening of the second heat dissipation hole 1222, the second heat dissipation hole 1222 may also be a strip hole, and the extension direction of the heat dissipation hole 1222 is consistent with the length direction of the indoor unit 10. In some other embodiments, the heat dissipation hole 1222 may also be other shapes, and the shape of the heat dissipation hole 1222 is not specifically limited here.

[0083] Since the second heat dissipation hole 1222 forms the outlet end of the heat dissipation duct 5, the second heat dissipation hole 1222 should be arranged adjacent to the return air port 1131, so that the airflow flowing out of the second heat dissipation hole 1222 can quickly flow through the return air port 1131 to the wind wheel cavity 1133 for air replenishment, thereby increasing the cooling efficiency of the indoor unit 10.

[0084] It should be noted that, in order to facilitate the installation and removal of the motor 4, a detachable connection method can be adopted between the motor cover 124 and the motor bracket 123, for example, a threaded connection method, a snap-fit ​​connection method, or a connection method connected by other fasteners can be adopted between the motor cover 124 and the motor bracket 123. Here, the connection method between the motor cover 124 and the motor bracket 123 is not specifically limited.

[0085] It should be noted that, in some other embodiments, the side panel structure can be formed by the motor bracket 123 and the motor cover 124, that is, the upper structure of the side panel structure can be formed by the motor bracket 123, and the lower structure of the side panel structure can be formed by the motor cover 124.

[0086] In order to enable the indoor unit 10 provided in this embodiment to operate normally, the indoor unit 10 provided in this embodiment should also include an electric control box 6, and a concave cavity 1121 for installing the electric control box 6 is formed at the bottom of the second housing 112, and the electric control box 6 is located between the wind wheel 2 and the heat exchanger 3. Among them, the electric control box 6 and the second housing 112 can be connected in a detachable manner, such as threaded connection or clamping, etc. Here, the connection method between the electric control box 6 and the second housing 112 is not specifically limited.

[0087] That is to say, in the present embodiment, the electric control box 6 is arranged facing the inspection port on the ceiling below the indoor unit 10, so that when the grille on the inspection port is opened, the electric control box 6 can be observed, which facilitates the inspection of the electric control box 6; moreover, the airflow entering through the inspection port can dissipate the heat of the electric control box 6, and at the same time can improve the performance of the electric control box 6, thereby improving the performance of the indoor unit 10 provided in the present embodiment.

[0088] Specifically, the electric control box 6 may include a box cover 61 disposed toward the inspection port and a box body 62 located between the box cover 61 and the bottom wall of the concave cavity 1121, the box body 62 is detachably connected to the second housing 112, and the box cover 61 is detachably connected to the box body 62. The detachable connection between the box cover 61 and the box body 62 may be a connection combining a threaded connection and a snap connection. Here, the connection between the box cover 61 and the box body 62 is not specifically limited.

[0089] In some specific implementations, in order to allow more low-temperature air to flow to the electric control box 6, the size of the cavity opening of the cavity 1121 in the width direction of the indoor unit 10 can be made larger than the size of the cavity bottom of the cavity 1121 in the width direction of the indoor unit 10. In this way, the electric control box 6 can be effectively cooled.

[0090] It should be noted that the width direction of the indoor unit 10 is Figures 1 to 6 The yy-axis direction is consistent.

[0091] Furthermore, in order to prevent the wind wheel 2 from causing harm to the human body, a protective grille 7 connected between the first housing 111 and the second housing 112 can be provided on the outside of the wind wheel 2, and the protective grille 7 is located between the wind wheel 2 and the electric control box 6. The provision of the protective grille 7 can not only prevent harm to the human body, but also protect the wind wheel 2, so that the wind wheel 2 can operate normally and sustainably.

[0092] The protective grille 7 and the first shell 111 may be connected by a snap-fit ​​connection, and the protective grille 7 and the second shell 112 may also be connected by a snap-fit ​​connection. The connection between the protective grille 7 and the first shell 111 and the second shell 112 is not specifically limited.

[0093] In addition, in the present embodiment, the side of the bottom wall of the cavity 1121 close to the heat exchange cavity 1135 is lower than the side of the bottom wall of the cavity 1121 close to the wind wheel cavity 1133. Therefore, when the size of the cavity opening of the cavity 1121 in the width direction of the indoor unit 10 is larger than the size of the cavity bottom of the cavity 1121 in the width direction of the indoor unit 10, the maintenance space for the electric control box 6 will be larger, and the protective grille 7 can be prevented from interfering with the maintenance of the electric control box 6 to a certain extent, thereby further improving the convenience of maintenance of the electric control box 6.

[0094] The indoor unit 10 provided in this embodiment should also include other components, such as a pipeline component connected to the heat exchanger 3. Here, other components in the indoor unit 10 provided in this embodiment are not introduced in detail.

[0095] This embodiment also provides a HVAC device, including the indoor unit 10 and the outdoor unit in the above embodiment. It should be noted that the structure of the indoor unit 10 has been described in detail in the above embodiment, and will not be repeated here.

[0096] Other structures included in the HVAC equipment provided in this embodiment, such as the outdoor unit, are not introduced in detail here.

[0097] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to at least two, for example, two, three, four, etc. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0098] The above disclosure is only the preferred embodiment of the present application, which certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. An indoor unit, characterized in that: include: A shell having a heat exchange air duct and a heat dissipation air duct connected to the heat exchange air duct formed therein; A wind wheel, mounted on the housing and located in the heat exchange air duct; as well as The motor is installed on the housing and located in the heat dissipation duct, and the motor is drivingly connected to the wind wheel.

2. The indoor unit according to claim 1, characterized in that: The housing includes a machine housing and a motor housing connected together; the motor housing is located in the heat dissipation duct and forms a motor cavity, and the motor is arranged in the motor cavity; The heat dissipation air duct includes an upstream heat dissipation air duct and a downstream heat dissipation air duct, the motor is located in the downstream heat dissipation air duct, and the upstream heat dissipation air duct and the downstream heat dissipation air duct are connected through an opening.

3. The indoor unit according to claim 2, characterized in that: The motor housing includes a motor bracket, and the motor bracket includes a partition structure; The partition structure forms part of the duct wall of the upstream heat dissipation duct.

4. The indoor unit according to claim 3, characterized in that: The side surface of the partition structure abuts against the housing.

5. The indoor unit according to claim 3, characterized in that: The opening is an opening arranged on the partition structure, and a part of the structure of the motor is exposed through the opening.

6. The indoor unit according to claim 3, characterized in that: The opening also includes a heat dissipation hole arranged on the shell wall surface of the motor shell.

7. The indoor unit according to claim 6, characterized in that: The motor bracket further comprises a bracket body connected to the partition structure, the extension direction of the bracket body is consistent with the circumferential direction of the motor, and the bracket body protrudes upward relative to the partition structure; The motor cavity comprises a motor slot provided on the bracket body, and the motor is arranged in the motor slot; The heat dissipation hole comprises a first heat dissipation hole, and the first heat dissipation hole is opened on the slot wall of the motor slot; Wherein, the top surface of the bracket body and the top surface of the partition structure jointly form a part of the air duct wall of the upstream heat dissipation air duct.

8. The indoor unit according to claim 7, characterized in that: The motor comprises a motor body and end covers connected to both axial ends of the motor body; The distance between the top of the bracket body and the plate surface of the partition structure is equal to the radius of the motor body.

9. The indoor unit according to claim 7, characterized in that: The first heat dissipation hole extends along the circumference of the motor and covers at least a quarter of the outer peripheral wall of the motor.

10. The indoor unit according to claim 8, characterized in that: There are a plurality of first heat dissipation holes; The plurality of first heat dissipation holes include a plurality of heat dissipation hole groups spaced apart along the circumference of the motor, and each of the heat dissipation hole groups includes at least one first heat dissipation hole spaced apart along the axial direction of the motor; In any of the heat dissipation hole groups, a projection area of ​​a first heat dissipation hole located at an end of the heat dissipation hole group on the motor extends from a peripheral wall of the motor body to an end surface of the end cover.

11. The indoor unit according to claim 7, characterized in that: The motor bracket further comprises a side plate structure connected to the bracket body, wherein the side plate structure is located between the motor and the wind wheel; The heat exchange air duct and the heat dissipation air duct are located on both sides of the side plate structure, and the heat dissipation air duct is formed by enclosing the housing and the side plate structure.

12. The indoor unit according to claim 11, characterized in that: Also included is a heat exchanger; The heat exchange air duct comprises a wind wheel cavity and a heat exchange cavity, the wind wheel is arranged in the wind wheel cavity, and the heat exchanger is arranged in the heat exchange cavity; The side plate structure extends in a direction from the wind wheel cavity to the heat exchange cavity, and the side plate structure covers the wind wheel cavity in its own extending direction.

13. The indoor unit according to claim 6, characterized in that: It also includes a heat exchanger, the heat exchange air duct includes a heat exchange cavity, and the heat exchanger is arranged in the heat exchange cavity; At least part of the heat dissipation hole is located on a side of the motor housing facing the heat exchange cavity.

14. The indoor unit according to claim 13, characterized in that: The heat exchange air duct also includes an air outlet communicated with the heat exchange cavity; The inlet end of the heat dissipation air duct is located on a side of the heat exchanger away from the air outlet.

15. The indoor unit according to claim 13, characterized in that: The heat exchange air duct also includes a wind wheel cavity communicated with the heat exchange cavity, and the wind wheel is located in the wind wheel cavity; The heat dissipation air duct is located at one side of the heat exchange air duct and extends in a direction from the heat exchange cavity to the wind wheel cavity.

16. The indoor unit according to claim 15, characterized in that: The heat exchange air duct also includes an air return port communicated with the wind wheel cavity; The outlet end of the heat dissipation air duct is arranged adjacent to the return air outlet.

17. The indoor unit according to claim 6, characterized in that: The motor housing further comprises a motor cover, the motor cover is buckled under the motor bracket, and the motor cavity is enclosed between the motor cover and the motor bracket; The heat dissipation holes further include a second heat dissipation hole, and the second heat dissipation hole is opened on the motor cover.

18. The indoor unit according to claim 17, characterized in that: There are a plurality of the second heat dissipation holes, and the plurality of the second heat dissipation holes are arranged in rows and columns.

19. The indoor unit according to any one of claims 2 to 10 and 12 to 18, characterized in that: The housing comprises a first shell and a second shell connected to each other; The motor housing is connected to the first housing, and the first housing, the second housing and the motor housing cooperate to define the heat exchange air duct and the heat dissipation air duct.

20. A HVAC equipment, characterized in that: The indoor unit comprises the indoor unit according to any one of claims 1 to 19.

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