Air conditioner indoor unit
By using an external rotor motor in the air conditioner indoor unit and optimizing the structure of the drain trough and water tray, the problems of low efficiency and water leakage of the internal rotor motor are solved, achieving a high-efficiency, low-noise and miniaturized air conditioner indoor unit design.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HISENSE (SHANDONG) AIR CONDITIONING CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-06-23
AI Technical Summary
Existing air conditioner indoor units use internal rotor motors, which are inefficient, noisy, and prone to water leakage. While external rotor motors improve efficiency and reduce noise, water leakage still exists.
The fan is driven by an external rotor motor, and a water receiving tray and drainage trough are designed on the base. The cross-sectional area of the drainage trough gradually increases, and the angle between the partition and the outer shell is controlled between 20° and 45°. The water receiving tray and drainage trough are integrally formed to avoid the formation of gaps. The drainage path is optimized by combining the heat insulation cavity and the flow guiding structure.
It improves the operating efficiency of the indoor air conditioning unit and reduces noise, reduces the risk of water leakage, achieves a more compact design, and enhances the drainage capacity and smooth flow of condensate.
Smart Images
Figure CN224397885U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of air conditioner technology, and more particularly to an indoor air conditioner unit. Background Technology
[0002] The indoor unit of an air conditioner contains a base, a motor, a fan, and an indoor heat exchanger. The motor is mounted on the base, and the fan is connected to the motor so that it rotates under the drive of the motor. The indoor heat exchanger is located upstream of the fan. When the air conditioner is in cooling mode, the refrigerant evaporates in the indoor heat exchanger, thereby achieving the purpose of cooling.
[0003] Current air conditioner indoor units use internal rotor motors, but these motors have low operating efficiency and high noise levels. To address this, related technologies use external rotor motors in indoor units to improve efficiency and reduce noise during operation. However, in practice, these external rotor motors have been found to leak water. Utility Model Content
[0004] This application discloses an indoor air conditioner unit that can reduce the risk of water leakage from the indoor air conditioner unit.
[0005] To achieve the above objectives, this application provides an indoor air conditioning unit, comprising:
[0006] The outer casing has an accommodating space inside, and the outer casing is provided with an air inlet and an air outlet, both of which are connected to the accommodating space;
[0007] A base, wherein the base is disposed within the accommodating space, and a motor mounting cavity is formed on the base;
[0008] An external rotor motor is installed in the motor mounting cavity;
[0009] A fan is connected to the external rotor motor, and the fan can rotate under the drive of the external rotor motor;
[0010] An indoor heat exchanger is disposed inside the outer casing and located upstream of the fan;
[0011] The base also has a connected water receiving tray and a drain trough. The water receiving tray extends from one end of the base to the other end of the base. The water receiving tray is located below the indoor heat exchanger. The drain trough is located below the external rotor motor. The bottom of the drain trough is provided with a drain hole for connecting a drain pipe.
[0012] The base includes:
[0013] A partition is located between the motor mounting cavity and the drainage groove;
[0014] The cross-sectional area of the drainage channel gradually increases from the direction from the drainage hole to the opening of the drainage channel.
[0015] This application connects an external rotor motor to a fan to drive the fan's rotation. Compared to using an internal rotor motor to drive the fan, the external rotor motor has higher operating efficiency, lower noise, and lower manufacturing cost. Therefore, this application not only improves the operating efficiency of the air conditioner indoor unit but also reduces its manufacturing cost and operating noise. Furthermore, the drain trough is located on the base and below the external rotor motor. Compared to having the drain trough located on one side of the external rotor motor along its length, this application can shorten the length of the base.
[0016] In addition, the base is equipped with a water collection tray and a drain trough. The water collection tray is located below the indoor heat exchanger to collect condensate from the heat exchanger. The bottom of the drain trough has a drain hole for connecting to a drain pipe. Condensate can flow through the water collection tray and drain trough into the drain hole, thereby being discharged from the indoor unit of the air conditioner. Furthermore, the cross-sectional area of the drain trough gradually increases from the bottom wall towards the opening. Therefore, both the water collection tray and the drain trough are integrally formed with the base, eliminating gaps as seen in related technologies, thus solving the problem of water leakage from the indoor unit of the air conditioner.
[0017] In one alternative embodiment, the partition is flat, and the angle between the partition and the depth direction of the outer shell is 20° to 45°.
[0018] If the angle between the partition and the depth direction of the outer casing is less than 20°, the partition will encroach on the space inside the drainage channel, reducing the volume of the drainage channel, which will reduce the drainage capacity of the drainage channel; if the angle between the partition and the depth direction of the outer casing is greater than 45°, the partition will encroach on the space inside the motor mounting cavity, reducing the volume of the motor mounting cavity, which is not conducive to the installation of an external rotor motor.
[0019] Therefore, in this embodiment, the included angle between the partition and the depth direction of the outer shell is controlled between 20° and 45°, which can control the volume of the drainage groove and the motor mounting cavity within a suitable range, so that the drainage groove has excellent drainage capacity while facilitating the installation of the external rotor motor.
[0020] In one optional embodiment, the drainage channel has a first sidewall and a second sidewall, the first sidewall and the second sidewall being distributed along the height direction of the housing, and the second sidewall being located below the first sidewall;
[0021] The water receiving tray has a water guiding surface, which is in contact with the second side wall and located on the same plane.
[0022] In this embodiment, the water receiving tray has a water guiding surface that is in contact with and on the same plane as the second sidewall. That is, there is no stepped structure between the water guiding surface and the second sidewall. After the condensate flows to the water guiding surface, it follows the water guiding surface to the second sidewall and is then discharged through the drain hole. Therefore, with this embodiment, the condensate is not blocked by the stepped structure when flowing from the water guiding surface to the second sidewall. This not only reduces the resistance encountered by the condensate during flow and improves the smoothness of the flow, but also prevents condensate from accumulating at the stepped structure, thus preventing complete drainage.
[0023] In one optional embodiment, the drainage trough has a first sidewall, a second sidewall, and a bottom wall, wherein the first sidewall and the second sidewall are distributed along the height direction of the outer casing, and the second sidewall is located below the first sidewall.
[0024] The drainage hole is located on the bottom wall of the tank, and the second side wall is connected to the edge of the drainage hole formed on the bottom wall of the tank.
[0025] If the second sidewall is separated from the edge of the drain hole, a stepped structure will be formed between the second sidewall and the edge of the drain hole. Some of the condensate flowing through the second sidewall to the bottom wall of the tank will be stored at the stepped structure and cannot be discharged through the drain hole, resulting in incomplete drainage of the condensate. In this embodiment, the second sidewall and the edge of the drain hole formed on the bottom wall of the tank are connected. That is, the second sidewall and the edge of the drain hole transition smoothly, and no stepped structure is formed between them. Therefore, after the condensate flows into the drain tank and is collected by the second sidewall, it will be directly guided to the edge of the drain hole and enter the drain hole, ensuring that the condensate is completely discharged from the drain tank.
[0026] In one optional embodiment, the second sidewall includes a first wall surface and a second wall surface that are disposed at an obtuse angle and connected to each other, wherein the extension length of the first wall surface is greater than the extension length of the second wall surface, and the second wall surface is connected to the edge of the drain hole.
[0027] In this embodiment, the second sidewall includes a first wall surface and a second wall surface that are in contact with each other. The second wall surface is in contact with the edge of the drain hole. The first wall surface and the second wall surface are set at an obtuse angle. That is, the end of the second wall surface away from the first wall surface is offset towards the direction close to the motor mounting cavity. Since the end of the second wall surface away from the first wall surface is in contact with the edge of the drain hole, this embodiment can make the drain hole closer to the motor mounting cavity. The installation space on the side of the base close to the motor mounting cavity is larger, which is more conducive to the installation of the drain pipe.
[0028] In one alternative embodiment, the edge of the drain hole is spaced apart from the first sidewall.
[0029] In this embodiment, the edge of the drain hole is separated from the first sidewall. That is, the distance between the first sidewall and the second sidewall is greater than the diameter of the drain hole. This allows the drain trough to have a larger width and a larger volume, thus giving the drain trough a superior drainage capacity.
[0030] In one optional embodiment, the drainage channel has a first sidewall and a second sidewall, the first sidewall and the second sidewall being distributed along the height direction of the housing, and the second sidewall being located below the first sidewall;
[0031] The base is provided with a heat insulation cavity, which is located on the side of the second side wall away from the drainage groove.
[0032] The second sidewall is located below the first sidewall. Therefore, cold water entering the drain channel is collected by the second sidewall. The second sidewall is significantly affected by the temperature of the condensate, causing its temperature to drop. This temperature drop leads to a decrease in the temperature of the first surface of the base, located on the side of the insulation cavity away from the drain channel. When the temperature of the first surface drops too low, condensation will form when indoor air comes into contact with it. This could cause condensate to drip onto the outer casing and leak into the room, or directly drip into the room, reducing the user experience. Therefore, this embodiment provides an insulation cavity on the side of the second sidewall away from the drain channel. The insulation cavity has weak heat transfer performance, thus preventing low temperatures from being transferred from the second sidewall to the first surface, reducing the impact of low temperatures on the first surface, and minimizing the risk of condensation.
[0033] In one alternative embodiment, the base has a first surface located on the side of the insulation cavity away from the drain groove, and the first surface faces the air outlet.
[0034] In this embodiment, the first surface is located on the side of the heat insulation cavity away from the drainage groove, and the first surface faces the air outlet. That is to say, the air outlet extends to the position corresponding to the first surface. Compared with the first surface being located on the side of the air outlet along the length direction of the outer shell, this embodiment can make the air outlet have a larger extension length, so that the air blown out by the air conditioner can be evenly distributed over a larger range, reducing the occurrence of local overcooling or overheating in the room.
[0035] In an optional embodiment, the indoor unit of the air conditioner further includes:
[0036] A heat insulation layer is disposed within the heat insulation cavity.
[0037] In this embodiment, a heat insulation layer is provided inside the heat insulation cavity. The heat transfer performance of the heat insulation layer is very weak. Therefore, the heat insulation cavity can further prevent low temperature from being transferred from the second sidewall to the first surface, further reduce the impact of low temperature on the first surface, and further reduce the risk of condensation on the first surface.
[0038] In an optional embodiment, the indoor unit of the air conditioner further includes:
[0039] A motor cover, which is connected to the base and covers the outer rotor motor;
[0040] A flow guiding structure is formed on the motor cover. The flow guiding structure is located below the end of the indoor heat exchanger near the outer rotor motor, and the lower end of the flow guiding structure is located above the second side wall of the drain groove away from the motor mounting cavity, so as to guide the condensate on the motor cover into the drain groove.
[0041] In this embodiment, a flow-guiding structure is formed on the motor cover. The lower end of the flow-guiding structure is located above the second side wall of the drain groove away from the outer rotor motor. Thus, when condensate dripping from the indoor heat exchanger onto the motor cover, it is guided by the flow-guiding structure to the second side wall and then discharged from the drain hole. Therefore, with this structure, condensate dripping from the motor cover directly enters the drain groove, resulting in a shorter flow path and higher drainage efficiency. Attached Figure Description
[0042] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0043] Figure 1 This is a schematic diagram of the structure of an air conditioner indoor unit disclosed in an embodiment of this application;
[0044] Figure 2 This is a schematic diagram of the shell structure disclosed in the embodiments of this application;
[0045] Figure 3 This is a partial structural schematic diagram of the air conditioner indoor unit disclosed in an embodiment of this application;
[0046] Figure 4 For this application Figure 3 The diagram shows the structure after the heat exchanger is hidden inside the room.
[0047] Figure 5 For this application Figure 4 A schematic diagram of the structure shown from another perspective;
[0048] Figure 6 For this application Figure 5 The structure shown is a cross-sectional view at the mm section.
[0049] Figure 7 For this application Figure 6 Enlarged view of point A in the middle;
[0050] Figure 8 This is a schematic diagram of the structure of the base disclosed in the embodiments of this application;
[0051] Figure 9 For this application Figure 8 Enlarged diagram of point B in the middle.
[0052] Explanation of reference numerals in the attached figures:
[0053] 100. Outer casing; 110. Air inlet; 120. Air outlet; 200. Base; 201. Drainage trough; 202. Drainage hole; 203. First side wall; 204. Second side wall; 204a. First wall surface; 204b. Second wall surface; 205. Bottom wall of the trough; 206. Insulation cavity; 207. First surface; 210. Water receiving tray; 211. Water guiding surface; 220. Partition; 300. External rotor motor; 400. Fan; 500. Indoor heat exchanger; 600. Motor cover; 700. Air guide plate; 800. Air inlet grille; 900. Drain pipe. Detailed Implementation
[0054] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0055] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.
[0056] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0057] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0058] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.
[0059] The indoor unit of an air conditioner contains a base, a motor, a fan, and an indoor heat exchanger. The motor is installed in the motor mounting cavity on the base, and the fan is connected to the motor so that it rotates under the drive of the motor. The indoor heat exchanger is located on the upstream side of the fan. When the air conditioner is in cooling mode, the refrigerant evaporates in the indoor heat exchanger, thereby achieving the purpose of cooling.
[0060] Current air conditioner indoor units use internal rotor motors, but these motors have low operating efficiency and generate significant noise. Therefore, related technologies use external rotor motors in air conditioner indoor units to improve efficiency and reduce operating noise.
[0061] To prevent the base from increasing in length after the drainage groove is installed, the relevant technology places the drainage groove on the lower side of the motor mounting cavity and sets a partition between the motor mounting cavity and the drainage groove to prevent condensate in the drainage groove from splashing onto the external rotor motor.
[0062] The inventors discovered that the partition in the related technology has a portion that is positioned opposite to the bottom wall of the drain trough. This portion of the partition hinders demolding, so the drain trough cannot be integrally formed with the base. Therefore, the related technology divides the base into a main body component and a drain component that are separately set. The main body component and the drain component are detachably connected. The main body component is provided with a water tray for collecting condensate from the indoor heat exchanger, and the drain component is provided with a drain trough. After the main body component and the drain component are connected, the water tray connects with the drain trough, and the condensate in the water tray can enter the drain trough to be discharged from the indoor unit of the air conditioner.
[0063] The inventors further discovered that after the main component and the drainage component are connected, a gap will form at the connection between the two, and some condensate will leak from the gap, thus causing the indoor unit of the air conditioner to leak water.
[0064] This application provides an air conditioner indoor unit that can reduce the risk of water leakage from the air conditioner indoor unit. The air conditioner indoor unit provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.
[0065] like Figures 1 to 9 As shown in the illustration, this application discloses an indoor air conditioner unit. Exemplarily, the indoor air conditioner unit can be a wall-mounted unit, a ducted unit, etc., and this application does not limit this to any particular type. The indoor air conditioner unit includes:
[0066] The housing 100 has an internal accommodating space. The housing 100 has an air inlet 110 and an air outlet 120, both of which are connected to the accommodating space. For example, the air inlet 110 can be located at the top of the housing 100, and the air outlet 120 can be located at the bottom of the housing 100. During cooling or heating, indoor air can enter the accommodating space through the air inlet 110, exchange heat with the indoor heat exchanger 500 (described below), and then return to the room through the air outlet 120. For example, an air inlet grille 800 can be provided at the air inlet 110 to prevent foreign objects from entering the housing 100, and an air guide plate 700 can be provided at the air outlet 120 to guide the airflow to a designated location.
[0067] The base 200 is located within the accommodating space and has a motor mounting cavity formed on it. The base 200 serves as the mounting base for the motor and the external rotor motor 300.
[0068] An external rotor motor 300 is mounted in a motor mounting cavity. The external rotor motor 300 drives the fan 400 to rotate, thereby drawing indoor air into the accommodating space from the air inlet 110. Exemplarily, the external rotor motor 300 includes an inner stator and an outer rotor, the outer rotor being rotatably fitted outside the inner stator. The fan 400, described below, can be connected to the outer rotor.
[0069] Fan 400 is connected to external rotor motor 300, and fan 400 can rotate under the drive of external rotor motor 300. For example, the axial direction of fan 400 can be parallel to the length direction of housing 100. Figure 1 (The direction indicated by the x-arrow in the middle) is parallel.
[0070] The indoor heat exchanger 500 is located inside the outer casing 100 and upstream of the fan 400. That is, the indoor heat exchanger 500 is located between the fan 400 and the air inlet 110. Refrigerant flows inside the indoor heat exchanger 500. The refrigerant can be used to exchange heat with the air entering the accommodating space and flowing through the indoor heat exchanger 500 to heat or cool the air flowing through the indoor heat exchanger 500.
[0071] The base 200 also has a connected water receiving tray 210 and a drain trough 201. The water receiving tray 210 extends from one end of the base 200 to the other end and is located below the indoor heat exchanger 500. Specifically, when the indoor heat exchanger 500 is used as an evaporator, the temperature of the indoor heat exchanger 500 is low, and the air flowing through the indoor heat exchanger 500 will condense to produce condensate. The water receiving tray 210 can collect the condensate on the indoor heat exchanger 500 and prevent the condensate from leaking outside the outer casing 100.
[0072] The drain trough 201 is located on the lower side of the external rotor motor 300. Compared to the drain trough 201 being located on one side of the external rotor motor 300 along the length of the outer casing 100, this application can shorten the length of the base 200, reduce the length of the air conditioner indoor unit, and make the air conditioner indoor unit more compact. The bottom of the drain trough 201 is provided with a drain hole 202, which is used to connect a drain pipe 900, through which the aforementioned condensate water can be discharged to the outside. Specifically, the drain hole 202 is located on the bottom wall of the drain trough 201.
[0073] Base 200 includes:
[0074] A partition 220 is located between the motor mounting cavity and the drain groove 201 to prevent condensate from the drain groove 201 from entering the motor mounting cavity and damaging the external rotor motor 300. For example, the partition 220 may be a flat plate structure.
[0075] The drain hole 202 points towards the opening of the drain channel 201, and the cross-sectional area of the drain channel 201 gradually increases. This ensures that when the injection mold is removed from the drain channel 201, the partition 220 will not obstruct the mold, allowing the drain channel 201 to be integrally injection molded along with the base 200. For example, the partition 220 can be offset from the bottom wall 205 of the drain channel 201 in the direction from the bottom wall 205 towards the opening of the drain channel 201.
[0076] This application connects the external rotor motor 300 to the fan 400 to drive the fan 400 to rotate. Compared with using an internal rotor motor to drive the fan 400, the external rotor motor 300 has higher operating efficiency, lower noise, and lower manufacturing cost. Therefore, this application can not only improve the operating efficiency of the air conditioner indoor unit, but also reduce the manufacturing cost and operating noise of the air conditioner indoor unit. Furthermore, the drain trough 201 is provided on the base 200 and located below the external rotor motor 300. Compared with the drain trough 201 being located on one side of the external rotor motor 300 along the length direction of the outer casing 100, this application can shorten the length of the base 200.
[0077] In addition, the base 200 is provided with a water receiving tray 210 and a drain trough 201. The water receiving tray 210 is located below the indoor heat exchanger 500 to collect condensate from the indoor heat exchanger 500. The bottom of the drain trough 201 is provided with a drain hole 202 for connecting to the drain pipe 900. Condensate can flow through the water receiving tray 210 and the drain trough 201 into the drain hole 202, thereby being discharged from the indoor air conditioning unit. Furthermore, from the bottom wall 205 of the drain trough 201 towards the opening, the cross-sectional area of the drain trough 201 gradually increases. Therefore, the water receiving tray 210 and the drain trough 201 are integrally formed with the base 200, and there are no gaps between the water receiving tray 210 and the drain trough 201 as in related technologies, thus solving the problem of water leakage from the indoor air conditioning unit.
[0078] In one alternative embodiment, please refer to Figure 7 The partition 220 is flat, and the partition 220 is perpendicular to the depth direction of the outer casing 100. Figure 1 The angle between the direction indicated by the y-arrow in the image and the direction shown is 20° to 45°, and this angle is determined by... Figure 7 The α symbol indicates this. For example, the angle between the partition 220 and the depth direction of the housing 100 can be 22°, 25°, 26°, 28°, 29°, 32°, 35°, 36°, 39°, etc., and this application does not limit this.
[0079] If the angle between the partition 220 and the depth direction of the outer casing 100 is less than 20°, the partition 220 will encroach on the space inside the drainage channel 201, reducing the volume of the drainage channel 201, which will reduce the drainage capacity of the drainage channel 201; if the angle between the partition 220 and the depth direction of the outer casing 100 is greater than 45°, the partition 220 will encroach on the space inside the motor mounting cavity, reducing the volume of the motor mounting cavity, which is not conducive to the installation of the external rotor motor 300.
[0080] Therefore, in this embodiment, the included angle between the partition 220 and the depth direction of the outer shell 100 is controlled between 20° and 45°, so that the volume of the drainage groove 201 and the motor mounting cavity can be controlled within a suitable range, so that the drainage groove 201 has excellent drainage capacity while facilitating the installation of the external rotor motor 300.
[0081] Furthermore, in this embodiment, the partition 220 is controlled at 20° to 45°, which allows the partition 220 to have a certain slope, which is conducive to pulling out the mold in the drainage groove 201. In other words, in this embodiment, it is not necessary to set a draft angle for the side of the partition 220 facing the drainage groove 201 to demold, thereby simplifying the structure of the base 200.
[0082] In one alternative embodiment, please refer to Figure 7 and Figure 9The drainage channel 201 has a first sidewall 203 and a second sidewall 204, the first sidewall 203 and the second sidewall 204 being along the height direction of the outer casing 100. Figure 1 The drainage channel 201 is distributed in the direction indicated by the arrow (z in the middle), and the second sidewall 204 is located below the first sidewall 203. For example, the drainage channel 201 also has a third sidewall and a fourth sidewall, which are distributed along the length of the housing 100. The third sidewall is located between the first sidewall 203 and the second sidewall 204, and is connected to both the first and second sidewalls 203 and 204 respectively. The fourth sidewall is located between the first sidewall 203 and the second sidewall 204, and is connected to both the first and second sidewalls 203 and 204 respectively.
[0083] The water receiving tray 210 has a water guiding surface 211, which is in contact with the second sidewall 204 and located on the same plane. It should be noted that the boundary line between the water guiding surface 211 and the second sidewall 204 is formed by... Figure 7 As shown by the dashed line in the figure; when this embodiment is combined with the embodiment in which the second sidewall 204 includes a first wall surface 204a and a second wall surface 204b that are set at an obtuse angle and connected to each other, the water guiding surface 211 and the first wall surface 204a are located on the same plane.
[0084] In this embodiment, the water receiving tray 210 has a water guiding surface 211, which is in contact with the second sidewall 204 and located on the same plane. That is, there is no stepped structure between the water guiding surface 211 and the second sidewall 204. After the condensate flows to the water guiding surface 211, it will follow the water guiding surface 211 to the second sidewall 204 and then be discharged through the drain hole 202. It can be seen that after adopting the solution of this embodiment, the condensate will not be blocked by the stepped structure when it flows from the water guiding surface 211 to the second sidewall 204. This not only reduces the resistance encountered by the condensate during the flow process and improves the smoothness of the condensate flow, but also prevents the condensate from accumulating at the stepped structure, which would prevent the condensate from being completely drained.
[0085] In one alternative embodiment, please refer to Figure 7 and Figure 9 The drainage trough 201 has a first sidewall 203, a second sidewall 204, and a bottom wall 205. The first sidewall 203 and the second sidewall 204 are distributed along the height direction of the outer shell 100, and the second sidewall 204 is located below the first sidewall 203. It should be noted that the first sidewall 203 is connected to the bottom wall 205, and the second sidewall 204 is also connected to the bottom wall 205. The first sidewall 203, the second sidewall 204, the bottom wall 205, and the third and fourth sidewalls mentioned above together form the drainage trough 201.
[0086] The drainage hole 202 is provided on the bottom wall 205 of the tank, and the second side wall 204 is connected to the edge of the drainage hole 202 formed on the bottom wall 205 of the tank.
[0087] If the second sidewall 204 is separated from the edge of the drain hole 202, a stepped structure will be formed between the second sidewall 204 and the edge of the drain hole 202. Some of the condensate flowing through the second sidewall 204 to the bottom wall 205 of the tank will be stored at the stepped structure and cannot be discharged through the drain hole 202, resulting in incomplete drainage. In this embodiment, the second sidewall 204 and the edge of the drain hole 202 formed on the bottom wall 205 of the tank are connected. That is, the second sidewall 204 and the edge of the drain hole 202 transition smoothly, and no stepped structure is formed between them. Therefore, after the condensate flows into the drain tank 201 and is collected by the second sidewall 204, it will be directly guided to the edge of the drain hole 202 and enter the drain hole 202, ensuring that the condensate is completely discharged from the drain tank 201. Of course, the drain hole 202 can also be located at the bottom of the first sidewall 203; this application does not limit this.
[0088] In one alternative embodiment, please refer to Figure 7 The second sidewall 204 includes a first wall surface 204a and a second wall surface 204b that are set at an obtuse angle and connected to each other. The extension length of the first wall surface 204a is greater than the extension length of the second wall surface 204b. The second wall surface 204b is connected to the edge of the drain hole 202.
[0089] In this embodiment, the second sidewall 204 includes a first wall surface 204a and a second wall surface 204b that are in contact with each other. The second wall surface 204b is in contact with the edge of the drain hole 202. The first wall surface 204a and the second wall surface 204b are set at an obtuse angle, that is, the end of the second wall surface 204b away from the first wall surface 204a is offset towards the direction closer to the motor mounting cavity. Since the end of the second wall surface 204b away from the first wall surface 204a is in contact with the edge of the drain hole 202, this embodiment allows the drain hole 202 to be set closer to the motor mounting cavity, and the installation space on the side of the base 200 closer to the motor mounting cavity is larger, which is more conducive to the installation of the drain pipe 900. Of course, the first wall surface 204a and the second wall surface 204b can also be located on the same plane, and this application does not limit this.
[0090] In one alternative embodiment, please refer to Figure 7 The edge of the drain hole 202 is separated from the first side wall 203.
[0091] In this embodiment, the edge of the drain hole 202 is spaced apart from the first sidewall 203. That is, the distance between the first sidewall 203 and the second sidewall 204 is greater than the diameter of the drain hole 202. This allows the drain trough 201 to have a larger width and volume, thus providing superior drainage capacity. Of course, the edge of the drain hole 202 can also be connected to the first sidewall 203; this application does not impose any limitation on this.
[0092] In one alternative embodiment, please refer to Figure 6 The drainage trough 201 has a first sidewall 203 and a second sidewall 204. The first sidewall 203 and the second sidewall 204 are distributed along the height direction of the outer shell 100, and the second sidewall 204 is located below the first sidewall 203. The base 200 is provided with a heat insulation cavity 206, which is located on the side of the second sidewall 204 away from the drainage trough 201.
[0093] The second sidewall 204 is located below the first sidewall 203. Therefore, after cold water enters the drain trough 201, it is collected by the second sidewall 204. At this time, the second sidewall 204 is greatly affected by the temperature of the condensate, causing its temperature to drop. This temperature drop leads to a decrease in the temperature of the first surface 207 of the base 200 located on the side of the insulation cavity 206 away from the drain trough 201. When the temperature of the first surface 207 drops too low, condensate will form when indoor air comes into contact with it. This may cause the condensate to drip onto the outer casing 100 and leak into the room, or the condensate to drip directly into the room, reducing the user experience. Therefore, in this embodiment, an insulation cavity 206 is provided on the side of the second sidewall 204 away from the drain trough 201. The insulation cavity 206 has weak heat transfer performance, thus preventing low temperature from being transferred from the second sidewall 204 to the first surface 207, reducing the impact of low temperature on the first surface 207, and reducing the risk of condensation on the first surface 207.
[0094] In one alternative embodiment, please refer to Figure 6 The base 200 has a first surface 207, which is located on the side of the heat insulation cavity 206 away from the drain groove 201 and faces the air outlet 120.
[0095] In this embodiment, the first surface 207 is located on the side of the heat insulation cavity 206 away from the drain groove 201, and the first surface 207 faces the air outlet 120. That is, the air outlet 120 extends to the position corresponding to the first surface 207. Compared with the first surface 207 being located on the side of the air outlet 120 along the length direction of the outer shell 100, this embodiment can make the air outlet 120 have a larger extension length, so that the air blown out by the air conditioner can be evenly distributed over a larger range, reducing the occurrence of local overcooling or overheating in the room.
[0096] In one optional embodiment, the air conditioner indoor unit further includes:
[0097] A heat insulation layer (not shown in the figure) is disposed within the heat insulation cavity 206. For example, the heat insulation layer is made of heat insulation material, which can be foam, mineral wool, glass wool, etc. This application does not limit the type of heat insulation layer.
[0098] In this embodiment, the heat insulation cavity 206 is provided with a heat insulation layer. The heat transfer performance of the heat insulation layer is very weak. Therefore, the heat insulation cavity 206 can further prevent low temperature from being transferred from the second side wall 204 to the first surface 207, further reduce the impact of low temperature on the first surface 207, and further reduce the risk of condensation on the first surface 207.
[0099] In one alternative embodiment, please refer to Figure 4 The indoor unit of the air conditioner also includes:
[0100] The motor cover 600 is connected to the base 200 and covers the outer rotor motor 300. The motor cover 600 can prevent the condensate on the condenser tube of the indoor heat exchanger 500 from dripping directly onto the outer rotor motor 300, thereby preventing damage to the outer rotor motor 300.
[0101] A flow guiding structure is formed on the motor cover 600. The flow guiding structure is located below the end of the indoor heat exchanger 500 near the outer rotor motor 300, and the lower end of the flow guiding structure is located above the second side wall 204 of the drain trough 201 away from the motor mounting cavity, so as to guide the condensate on the motor cover 600 into the drain trough 201. For example, the flow guiding structure may be arc-shaped.
[0102] In this embodiment, a flow guiding structure is formed on the motor cover 600. The lower end of the flow guiding structure is located above the second side wall 204 of the drain trough 201 away from the outer rotor motor 300. Thus, when condensate from the indoor heat exchanger 500 drips onto the motor cover 600, it is guided by the flow guiding structure on the motor cover 600 to the second side wall 204, and then discharged from the drain hole 202. Therefore, with the structure of this embodiment, the condensate dripping from the motor cover 600 directly enters the drain trough 201, resulting in a shorter flow path and higher drainage efficiency.
[0103] The foregoing embodiments of this application focus on describing the differences between various embodiments. As long as the different optimization features between embodiments are not contradictory, they can be combined to form better embodiments. For the sake of brevity, these differences will not be elaborated upon here. The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art, under the guidance of this application, can make many modifications without departing from the spirit and scope of the claims, all of which fall within the protection scope of this application.
Claims
1. An indoor unit for an air conditioner, characterized in that, include: The outer casing (100) has an accommodating space inside, and the outer casing (100) is provided with an air inlet (110) and an air outlet (120), both of which are connected to the accommodating space. A base (200) is disposed within the accommodating space, and a motor mounting cavity is formed on the base (200); An external rotor motor (300) is installed in the motor mounting cavity; A fan (400) is connected to the external rotor motor (300), and the fan (400) is able to rotate under the drive of the external rotor motor (300); An indoor heat exchanger (500) is disposed inside the housing (100) and located upstream of the fan (400); The base (200) also has a connected water receiving tray (210) and a drain trough (201). The water receiving tray (210) extends from one end of the base (200) to the other end of the base (200). The water receiving tray (210) is located below the indoor heat exchanger (500). The drain trough (201) is located below the external rotor motor (300). The bottom of the drain trough (201) is provided with a drain hole (202). The drain hole (202) is used to connect a drain pipe (900). The base (200) includes: A partition (220) is located between the motor mounting cavity and the drainage groove (201); The cross-sectional area of the drainage channel (201) gradually increases from the direction from the drain hole (202) to the opening of the drainage channel (201).
2. The indoor unit of the air conditioner according to claim 1, characterized in that, The partition (220) is flat, and the angle between the partition (220) and the depth direction of the outer shell (100) is 20° to 45°.
3. The indoor unit of the air conditioner according to claim 1, characterized in that, The drainage channel (201) has a first sidewall (203) and a second sidewall (204), the first sidewall (203) and the second sidewall (204) are distributed along the height direction of the outer shell (100), and the second sidewall (204) is located below the first sidewall (203); The water receiving tray (210) has a water guiding surface (211), which is in contact with the second side wall (204) and located on the same plane.
4. The indoor unit of the air conditioner according to claim 1, characterized in that, The drainage trough (201) has a first sidewall (203), a second sidewall (204) and a bottom wall (205). The first sidewall (203) and the second sidewall (204) are distributed along the height direction of the outer shell (100), and the second sidewall (204) is located below the first sidewall (203). The drain hole (202) is provided on the bottom wall (205) of the tank, and the second side wall (204) is connected to the edge of the drain hole (202) formed on the bottom wall (205) of the tank.
5. The indoor unit of the air conditioner according to claim 4, characterized in that, The second sidewall (204) includes a first wall surface (204a) and a second wall surface (204b) that are arranged at an obtuse angle and connected to each other. The extension length of the first wall surface (204a) is greater than the extension length of the second wall surface (204b). The second wall surface (204b) is connected to the edge of the drain hole (202).
6. The indoor unit of the air conditioner according to claim 4, characterized in that, The edge of the drainage hole (202) is separated from the first sidewall (203).
7. The indoor unit of the air conditioner according to claim 1, characterized in that, The drainage channel (201) has a first sidewall (203) and a second sidewall (204), the first sidewall (203) and the second sidewall (204) are distributed along the height direction of the outer shell (100), and the second sidewall (204) is located below the first sidewall (203); The base (200) is provided with a heat insulation cavity (206), which is located on the side of the second side wall (204) away from the drainage groove (201).
8. The indoor unit of the air conditioner according to claim 7, characterized in that, The base (200) has a first surface (207) located on the side of the heat insulation cavity (206) away from the drain groove (201) and facing the air outlet (120).
9. The indoor unit of the air conditioner according to claim 7, characterized in that, The indoor unit of the air conditioner also includes: A heat insulation layer is disposed within the heat insulation cavity (206).
10. The indoor unit of the air conditioner according to claim 1, characterized in that, The indoor unit of the air conditioner also includes: A motor cover (600) is connected to the base (200) and covers the outer rotor motor (300); A flow guiding structure is formed on the motor cover (600). The flow guiding structure is located below the end of the indoor heat exchanger (500) near the outer rotor motor (300), and the lower end of the flow guiding structure is located above the second side wall (204) of the drain trough (201) away from the motor mounting cavity, so as to guide the condensate on the motor cover (600) into the drain trough (201).