Indoor unit of air conditioner

Abstract

The utility model discloses an air conditioner indoor unit which comprises a machine shell, a heat dissipation air inlet, a main air inlet and an air outlet. An indoor heat exchanger; an indoor fan assembly; the electric control box is arranged in the machine shell; in the left-right direction of the machine shell, the electric control box is arranged between the indoor fan assembly and the heat dissipation air inlet. Wherein a heat dissipation inlet and a heat dissipation outlet are formed in the two opposite sides of the electric control box in the left-right direction respectively, the heat dissipation inlet and the heat dissipation outlet are communicated, the heat dissipation inlet and the heat dissipation air inlet are correspondingly communicated, the heat dissipation outlet and the indoor fan assembly are correspondingly communicated, and the projection of the heat dissipation inlet and the projection of the heat dissipation outlet in the left-right direction at least partially do not coincide. Therefore, high-speed airflow with large air volume can be formed in the electric control box, and the airflow can flow through more electric devices, so that the heat dissipation uniformity of the electric devices in the electric control box can be improved, and the heat dissipation effect of the electric devices in the electric control box is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, and in particular to an indoor unit of an air conditioner. Background Art

[0002] In the air conditioners in the related art, an electric control box is arranged, and a control board and some control electrical components thereon are arranged in the electric control box. The control board and some control electrical components thereon are mainly used to control the operation of devices such as heat exchangers, compressors, and electronic valves in the air conditioner.

[0003] Among them, an electric control box is arranged in the indoor unit. Considering that electrical components generate heat during operation, in order to avoid the accumulation of heat in the electric control box, avoid component failure and reduce the service life of components, heat dissipation holes are arranged on the electric control box to ensure the heat dissipation of the electric control box.

[0004] However, the structural design of the electric control box in the prior art is still not reasonable enough, and the heat dissipation holes have a poor heat dissipation effect on the inside of the electric control box, and cannot adapt to the problems of increased power and increased heat in the electric control box brought about by the addition of more functional modules (such as voice, color screen, decorative light strip, fresh air module, etc.) in the air conditioner. Summary of the Utility Model

[0005] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide an indoor unit of an air conditioner, and the heat dissipation effect of the electric control box of the indoor unit of the air conditioner is better.

[0006] To achieve the above object, according to an embodiment of the utility model, an indoor unit of an air conditioner is provided, including: a housing, the housing is provided with a heat dissipation air inlet, a main air inlet and an air outlet, the main air inlet and the air outlet are oppositely arranged in the up and down directions, and the heat dissipation air inlet is arranged on one side of the housing in the left and right directions; an indoor heat exchanger, the indoor heat exchanger is arranged in the housing; an indoor fan assembly, the indoor fan assembly is arranged in the housing, the indoor fan assembly drives air to enter the housing from the outside through the main air inlet and the heat dissipation air inlet, and the air flows through the indoor fan assembly to the indoor heat exchanger, and after exchanging heat with the indoor heat exchanger to form a heat exchange air flow, it flows out from the air outlet; an electric control box, the electric control box is arranged in the housing; in the left and right directions of the housing, the electric control box is arranged between the indoor fan assembly and the heat dissipation air inlet; wherein, heat dissipation inlets and heat dissipation outlets are respectively arranged on the opposite sides of the electric control box in the left and right directions, the heat dissipation inlets and the heat dissipation outlets are communicated with each other, the heat dissipation inlets are correspondingly communicated with the heat dissipation air inlets, the heat dissipation outlets are correspondingly communicated with the indoor fan assembly, and at least part of the projections of the heat dissipation inlets and the heat dissipation outlets in the left and right directions do not overlap.

[0007] According to an embodiment of the present utility model, an indoor unit of an air conditioner can form a high-speed air flow with a large air volume in an electric control box, and the air flow can flow through more electrical components, thereby improving the heat dissipation uniformity of the electrical components in the electric control box and enhancing the heat dissipation effect of the electrical components in the electric control box.

[0008] According to some embodiments of the present utility model, the projection of the electric control box in the left-right direction is defined as the projection of the electric control box. The projection of the electric control box is rectangular, and the projections of the heat dissipation inlet and the heat dissipation outlet in the left-right direction are respectively adjacent to two diagonals of the projection of the electric control box.

[0009] According to some embodiments of the present utility model, the heat dissipation inlet is located at the rear side of the electric control box and adjacent to the lower end corner of the electric control box, and the heat dissipation outlet is located at the front side of the electric control box and adjacent to the upper end corner of the electric control box.

[0010] According to some embodiments of the present utility model, the following are provided in the electric control box: a first baffle, which corresponds to and is spaced from the heat dissipation inlet in the left-right direction; a second baffle, which corresponds to and is spaced from the heat dissipation outlet in the left-right direction.

[0011] According to some embodiments of the present utility model, a receiving cavity is provided in the electric control box. The receiving cavity is adapted to receive electrical components. The receiving cavity is respectively communicated with the heat dissipation inlet and the heat dissipation outlet. First and second protruding portions are respectively provided on opposite sides of the electric control box in the left-right direction. The first and second protruding portions protrude away from the receiving cavity. The heat dissipation inlet is provided on the first protruding portion, and the heat dissipation outlet is provided on the second protruding portion. The first baffle is spaced from the first protruding portion to form a first air guiding cavity, and the first air guiding cavity is communicated with the receiving cavity; the second baffle is spaced from the second protruding portion to form a second air guiding cavity, and the second air guiding cavity is communicated with the receiving cavity.

[0012] According to some embodiments of the present utility model, a first ventilation opening is provided on the first baffle, and the first air guiding cavity is communicated with the receiving cavity through the first ventilation opening. A second ventilation opening is provided on the second baffle, and the second air guiding cavity is communicated with the receiving cavity through the second ventilation opening.

[0013] According to some embodiments of the present utility model, at least a part of the first protruding portion is provided with the heat dissipation inlet. The first baffle corresponds to the heat dissipation inlet. The projection area of the first baffle in the left-right direction is larger than the projection area of the heat dissipation inlet in the left-right direction. At least a part of the first baffle corresponds to the part of the first protruding portion where the heat dissipation inlet is not provided.

[0014] According to some embodiments of the present utility model, at least a part of the second convex portion is provided with the heat dissipation outlet, the second baffle is corresponding to the heat dissipation inlet, the projected area of the second baffle in the left - right direction is larger than the projected area of the heat dissipation outlet in the left - right direction, and at least a part of the second baffle is corresponding to the part of the second convex portion where the heat dissipation inlet is not opened.

[0015] According to some embodiments of the present utility model, the heat dissipation inlet and the heat dissipation outlet are both provided with a plurality of grid members arranged at intervals.

[0016] The indoor unit of an air conditioner according to an embodiment of the present utility model includes: a housing, the housing is provided with a heat dissipation air inlet, a main air inlet, and an air outlet, the main air inlet and the air outlet are oppositely arranged in the up - down direction, and the heat dissipation air inlet is arranged on one side of the housing in the left - right direction; an indoor heat exchanger, the indoor heat exchanger is arranged inside the housing; an indoor fan assembly, the indoor fan assembly is arranged inside the housing, the indoor fan assembly drives air to enter the housing from the outside through the main air inlet and the heat dissipation air inlet, and the air flows through the indoor fan assembly to the indoor heat exchanger, and after exchanging heat with the indoor heat exchanger to form a heat - exchanged air flow, it flows out from the air outlet; an electric control box, the electric control box is arranged inside the housing; in the left - right direction of the housing, the electric control box is arranged between the indoor fan assembly and the heat dissipation air inlet; wherein, heat dissipation inlets and heat dissipation outlets are respectively arranged on the opposite sides of the electric control box in the left - right direction, the heat dissipation inlets and the heat dissipation outlets are communicated, the heat dissipation inlets are correspondingly communicated with the heat dissipation air inlet, and the heat dissipation outlets are correspondingly communicated with the indoor fan assembly.

[0017] The indoor unit of an air conditioner according to an embodiment of the present utility model can form a high - speed air flow with a large air volume inside the electric control box. During the process of the air flow flowing in the electric control box, it can flow through the electrical components on the control board, take away the heat of the electrical components, reduce the temperature inside the electric control box and the electrical components, and ensure the stable operation of the electrical components on the control board.

[0018] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0019] The above - mentioned and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0020] Figure 1 is a schematic diagram of the indoor unit of an air conditioner according to an embodiment of the present utility model;

[0021] Figure 2It is a partial sectional view of an indoor unit of an air conditioner according to an embodiment of the present utility model;

[0022] Figure 3 It is a partial sectional view of an indoor unit of an air conditioner according to an embodiment of the present utility model;

[0023] Figure 4 It is a front view of an electric control box according to an embodiment of the present utility model;

[0024] Figure 5 It is a schematic diagram of an electric control box according to an embodiment of the present utility model;

[0025] Figure 6 It is a schematic diagram of another perspective of the electric control box according to an embodiment of the present utility model;

[0026] Figure 7 It is a partial schematic diagram of the electric control box according to an embodiment of the present utility model;

[0027] Figure 8 It is a partial schematic diagram of another perspective of the electric control box according to an embodiment of the present utility model;

[0028] Figure 9 It is a sectional view of the electric control box according to an embodiment of the present utility model;

[0029] Figure 10 It is a sectional view of another perspective of the electric control box according to an embodiment of the present utility model.

[0030] Reference numerals:

[0031] 100, indoor unit of air conditioner;

[0032] 10, housing; 11, heat dissipation air inlet; 12, air outlet; 13, main air inlet;

[0033] 20, indoor heat exchanger;

[0034] 30, indoor fan assembly;

[0035] 40, electric control box; 41, first convex part; 411, heat dissipation inlet; 42, second convex part; 421, heat dissipation outlet; 43, first baffle; 431, first ventilation opening; 44, second baffle; 441, second ventilation opening; 45, accommodation cavity; 46, first air guiding cavity; 47, second air guiding cavity. Detailed implementation manners

[0036] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0037] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0038] In the description of the present utility model, the "first feature" and "second feature" may include one or more of such features.

[0039] In the description of the present utility model, the meaning of "a plurality" is two or more, and the meaning of "several" is one or more.

[0040] The following refers to the attached Figures 1 - 10 Describe the indoor unit 100 of an air conditioner according to an embodiment of the present utility model.

[0041] Combined with Figures 1 - 3 As shown, the indoor unit 100 of an air conditioner according to an embodiment of the present utility model may include: a housing 10, an indoor heat exchanger 20, an indoor fan assembly 30, and an electric control box 40.

[0042] Among them, the indoor heat exchanger 20, the indoor fan assembly 30, and the electric control box 40 are all arranged inside the housing 10. In this way, the housing 10 can play a role of covering and protecting the indoor heat exchanger 20, the indoor fan assembly 30, and the electric control box 40, and can prevent the erosion of foreign objects from the outside or the impact of external forces from damaging the structures of each component. Thus, the structural reliability of the indoor unit 100 of the air conditioner can be improved, and it can be ensured that the indoor unit 100 of the air conditioner can work properly.

[0043] Further, the cabinet 10 is arranged in an indoor environment. The cabinet 10 is provided with a main air inlet 13 and an air outlet 12. The main air inlet 13 and the air outlet 12 are arranged opposite to each other in the vertical direction. Indoor air can enter the cabinet 10 through the main air inlet 13, facilitating the heat exchange between the indoor air and the indoor heat exchanger 20. The indoor fan assembly 30 is located on one side of the indoor heat exchanger 20. The indoor fan assembly 30 drives the indoor air to enter the cabinet 10 from the main air inlet 13. After the indoor air exchanges heat with the indoor heat exchanger 20 to form a heat exchange air flow, it is driven by the indoor fan assembly 30 to flow out of the cabinet 10 from the air outlet 12.

[0044] In this way, the indoor unit 100 of the air conditioner can selectively control the indoor air to enter the cabinet 10 through the main air inlet 13. The indoor air can exchange heat with the indoor heat exchanger 20 to form a heat exchange air flow, and then is driven by the indoor fan assembly 30 to flow out of the cabinet 10 from the air outlet 12, thereby realizing cooling or heating for the room.

[0045] Combined with Figures 1 - 3 As shown, the cabinet 10 is also provided with a heat dissipation air inlet 11. The heat dissipation air inlet 11 is arranged on one side of the cabinet 10 in the left - right direction. In the left - right direction of the cabinet 10, the electric control box 40 is arranged between the indoor fan assembly 30 and the heat dissipation air inlet 11.

[0046] Specifically, the electric control box 40 is provided with a control board and electrical components for controlling the operation of each functional module of the indoor unit 100 of the air conditioner.

[0047] It can be understood that the electrical components generate heat during operation. If the electric control box 40 is not cooled in time, the heat accumulated in the electric control box 40 will be too high, which will shorten the service life of the electrical components, cause the electrical components in the electric control box 40 to have thermal failure, and in a more serious situation, the electrical components will be burned out, resulting in damage to the indoor unit 100 of the air conditioner.

[0048] By arranging the heat dissipation air inlet 11 on one side of the cabinet 10 in the left - right direction and arranging the electric control box 40 between the indoor fan assembly 30 and the heat dissipation air inlet 11 in the left - right direction of the cabinet 10, the indoor fan assembly 30 can drive the air to enter the cabinet 10 from the outside through the heat dissipation air inlet 11 and make the air flow through the electric control box 40. In this way, the heat of the electric control box 40 can be taken away, the temperature inside the electric control box 40 can be reduced, and it can prevent the electrical components inside the electric control box 40 from overheating and failing or even burning out.

[0049] Combined with Figures 1 - 3 As shown, on the opposite sides of the electric control box 40 in the left - right direction, there are respectively arranged a heat dissipation inlet 411 and a heat dissipation outlet 421, and the heat dissipation inlet 411 and the heat dissipation outlet 421 are connected. Moreover, the heat dissipation inlet 411 is correspondingly connected to the heat dissipation air inlet 11, and the heat dissipation outlet 421 is correspondingly connected to the indoor fan assembly 30.

[0050] It is understandable that the electronic control box 40 is arranged between the indoor fan assembly 30 and the heat dissipation air inlet 11, and the air flow passes through the surface of the electronic control box 40. Although the heat of the electronic control box 40 can be taken away, the heat taken away is relatively limited, and there may still be heat accumulation inside the electronic control box 40, resulting in the failure or even burning of the electrical components inside the electronic control box 40.

[0051] By providing a heat dissipation inlet 411 and a heat dissipation outlet 421 on the electronic control box 40, it can ensure the mutual circulation of the air inside the electronic control box 40 and the air outside the electronic control box 40. In this way, the heat inside the electronic control box 40 can be dissipated to the outside of the electronic control box 40 following the air flow, thereby reducing the heat inside the electronic control box 40 and lowering the temperature inside the electronic control box 40, and preventing the electrical components inside the electronic control box 40 from overheating and failing or even burning.

[0052] Furthermore, it is understandable that the heat dissipation effect of the electronic control box 40 is related to the air volume and air flow velocity entering the electronic control box 40. By providing a heat dissipation air inlet 11 on one side of the casing 10 in the left - right direction, the heat dissipation inlet 411 is correspondingly communicated with the heat dissipation air inlet 11, and the heat dissipation outlet 421 is correspondingly communicated with the indoor fan assembly 30. When the indoor fan assembly 30 operates, a negative pressure can be formed near the electronic control box 40, sucking a large amount of indoor ambient air into the electronic control box 40 successively through the heat dissipation air inlet 11 and the heat dissipation inlet 411, and flowing out of the electronic control box 40 quickly through the heat dissipation outlet 421.

[0053] In this way, a high - speed air flow with a large air volume can be formed inside the electronic control box 40. During the process of the air flow flowing inside the electronic control box 40, it can flow through the electrical components on the control board, take away the heat of the electrical components, lower the temperature inside the electronic control box 40 and the electrical components, and ensure the stable operation of the electrical components on the control board.

[0054] Combined with Figures 4 - 10 As shown, the projections of the heat dissipation inlet 411 and the heat dissipation outlet 421 in the left - right direction are at least partially non - overlapping.

[0055] Specifically, the control board and electrical components inside the electronic control box 40 are not only arranged in one place, but are evenly distributed inside the electronic control box 40. A heat dissipation channel is formed between the heat dissipation inlet 411 and the heat dissipation outlet 421. The heat dissipation channel can determine the flow path of the air flow inside the electronic control box 40, and the heat of the electrical components located in the flow path can be better taken away by the air flow.

[0056] In the prior art, the projections of the heat dissipation inlet 411 and the heat dissipation outlet 421 in the left - right direction correspond to and overlap with each other. In this way, the heat dissipation channel formed between the heat dissipation inlet 411 and the heat dissipation outlet 421 also extends in the left - right direction, and the heat dissipation of the electric control box 40 can be achieved. However, considering that the control board and electrical components in the electric control box 40 are evenly distributed, when the air flow flows along the heat dissipation channel extending in the left - right direction, flowing directly in and out in the left - right direction, it can only flow through some electrical components, which will cause the problem of uneven heat dissipation inside the electric control box 40 and the heat dissipation effect is poor.

[0057] In this application, by making the projections of the heat dissipation inlet 411 and the heat dissipation outlet 421 in the left - right direction at least partially non - overlapping, the air flow entering the interior of the electric control box 40 through the heat dissipation inlet 411 cannot flow out directly in the left - right direction, but needs to change the flow direction inside the electric control box 40 and then flow out through the heat dissipation outlet 421.

[0058] In this way, the length of the heat dissipation channel formed between the heat dissipation inlet 411 and the heat dissipation outlet 421 can be increased, so that the air flow can flow through more parts of the electrical components, improving the heat dissipation uniformity of the electrical components in the electric control box 40 and enhancing the heat dissipation effect of the electrical components in the electric control box 40.

[0059] Therefore, by respectively arranging the heat dissipation inlet 411 and the heat dissipation outlet 421 on the opposite sides of the electric control box 40 in the left - right direction, the heat dissipation inlet 411 and the heat dissipation outlet 421 are connected, the heat dissipation inlet 411 corresponds to and is connected with the heat dissipation air inlet 11, the heat dissipation outlet 421 corresponds to and is connected with the indoor fan assembly 30, and by making the projections of the heat dissipation inlet 411 and the heat dissipation outlet 421 in the left - right direction at least partially non - overlapping, a high - speed air flow with a large air volume can be formed inside the electric control box 40, and the air flow can flow through more parts of the electrical components, thereby improving the heat dissipation uniformity of the electrical components in the electric control box 40 and enhancing the heat dissipation effect of the electrical components in the electric control box 40.

[0060] Combined with Figures 5 - 8 As shown, setting the projection of the electric control box 40 in the left - right direction as the electric control box projection, the electric control box projection is rectangular, and the projections of the heat dissipation inlet 411 and the heat dissipation outlet 421 in the left - right direction are respectively adjacent to two diagonals of the electric control box projection.

[0061] Specifically, the electric control box projection is rectangular, and it can be understood that in a rectangle, the diagonal is the longest line segment. By making the projections of the heat dissipation inlet 411 and the heat dissipation outlet 421 in the left - right direction respectively adjacent to two diagonals of the electric control box projection, the setting positions of the heat dissipation inlet 411 and the heat dissipation outlet 421 can be optimized, and the length of the heat dissipation channel formed between the heat dissipation inlet 411 and the heat dissipation outlet 421 can be increased.

[0062] In this way, the airflow in the electric control box 40 can flow through more electrical components, improving the heat dissipation uniformity of the electrical components in the electric control box 40 and enhancing the heat dissipation effect of the electrical components in the electric control box 40.

[0063] Furthermore, as shown in Figures 5 - 8 the heat dissipation inlet 411 is located at the rear side of the electric control box 40 and is arranged adjacent to the lower end corner of the electric control box 40, and the heat dissipation outlet 421 is located at the front side of the electric control box 40 and is arranged adjacent to the upper end corner of the electric control box 40.

[0064] Specifically, considering that the electric control box 40 is a three-dimensional structure, specifically a cuboid, it can be understood that in a cuboid, the line connecting a pair of opposite vertices is the longest line segment. Among them, the lower end corner on the rear side and on the left side of the electric control box 40 and the upper end corner on the front side and on the right side of the electric control box 40 are a pair of opposite vertices of the electric control box 40.

[0065] By arranging the heat dissipation inlet 411 at the rear side of the electric control box 40 and adjacent to the lower end corner of the electric control box 40, and arranging the heat dissipation outlet 421 at the front side of the electric control box 40 and adjacent to the upper end corner of the electric control box 40. That is: the heat dissipation inlet 411 and the heat dissipation outlet 421 are respectively arranged adjacent to a pair of opposite vertices of the electric control box 40, which can further optimize the setting positions of the heat dissipation inlet 411 and the heat dissipation outlet 421, and further increase the length of the heat dissipation channel formed between the heat dissipation inlet 411 and the heat dissipation outlet 421.

[0066] In this way, the airflow in the electric control box 40 can flow through more electrical components, improving the heat dissipation uniformity of the electrical components in the electric control box 40 and enhancing the heat dissipation effect of the electrical components in the electric control box 40.

[0067] As shown in Figures 5 - 10 the electric control box 40 is provided with: a first baffle 43 and a second baffle 44. The first baffle 43 corresponds to the heat dissipation inlet 411 in the left-right direction and is spaced apart from each other. And, the second baffle 44 corresponds to the heat dissipation outlet 421 in the left-right direction and is spaced apart from each other.

[0068] Specifically, when the electric control box 40 is working, there may also be a situation of control failure and ignition, resulting in a fire in the electric control box 40. The fire may escape to the outside of the electric control box 40 through the heat dissipation outlet 421 and the heat dissipation inlet 411, and even burn other components of the indoor unit 100 of the air conditioner, causing the indoor unit 100 of the air conditioner to fail to work properly.

[0069] By making the first baffle 43 correspond to the heat dissipation inlet 411 in the left - right direction, when a flame appears in the electric control box 40 and may escape through the heat dissipation inlet 411, the first baffle 43 can block the flame, thus preventing the flame from escaping through the heat dissipation inlet 411. Moreover, by spacing the first baffle 43 and the heat dissipation inlet 411 from each other in the left - right direction, air flow can enter the electric control box 40 through the gap between the first baffle 43 and the heat dissipation inlet 411, avoiding the first baffle 43 completely blocking the heat dissipation inlet 411 and ensuring the normal heat dissipation of the electric control box 40.

[0070] By making the second baffle 44 correspond to the heat dissipation outlet 421 in the left - right direction, when a flame appears in the electric control box 40 and may escape through the heat dissipation outlet 421, the second baffle 44 can block the flame, thus preventing the flame from escaping through the heat dissipation outlet 421. Moreover, by spacing the second baffle 44 and the heat dissipation outlet 421 from each other in the left - right direction, air flow can flow out of the electric control box 40 through the gap between the second baffle 44 and the heat dissipation outlet 421, avoiding the second baffle 44 completely blocking the heat dissipation outlet 421 and ensuring the normal heat dissipation of the electric control box 40.

[0071] In this way, while dissipating heat from the electrical components in the electric control box 40, when there is a flame inside the electric control box 40 due to the failure of the control board, the flame can be sealed inside the electric control box 40 to prevent the flame from escaping, thereby realizing the fire - prevention design of the electric control box 40 and improving the safety of the electric control box 40 and even the indoor unit 100 of the air conditioner.

[0072] Combined Figures 5 - 10 As shown, an accommodation cavity 45 is provided in the electric control box 40. The accommodation cavity 45 is suitable for accommodating electrical components. The accommodation cavity 45 is respectively communicated with the heat dissipation inlet 411 and the heat dissipation outlet 421. In this way, air flow can enter the accommodation cavity 45 through the heat dissipation inlet 411, flow in the accommodation cavity 45, and then flow out through the heat dissipation outlet 421, thereby taking away the heat of the electrical components in the accommodation cavity 45 and realizing the heat dissipation of the electrical components.

[0073] Furthermore, in some embodiments of the present utility model, first protrusion parts 41 and second protrusion parts 42 are respectively provided on the opposite sides of the electric control box 40 in the left - right direction. The first protrusion parts 41 and the second protrusion parts 42 protrude in the direction away from the accommodation cavity 45. Among them, the heat dissipation inlet 411 is arranged on the first protrusion part 41, and the first baffle 43 is spaced from the first protrusion part 41. Also, the heat dissipation outlet 421 is arranged on the second protrusion part 42, and the second baffle 44 is spaced from the second protrusion part 42.

[0074] It can be understood that the first baffle 43 is arranged on the side of the first convex part 41 facing the accommodation cavity 45, and the second baffle 44 is arranged on the side of the second convex part 42 facing the accommodation cavity 45. In other words, both the first convex part 41 and the second convex part 42 protrude outwardly towards the outside of the electric control box 40. The first baffle 43 and the second baffle 44 participate in forming the accommodation cavity 45, which can avoid the reduction of the volume of the accommodation cavity 45 and ensure that the accommodation cavity 45 has enough space to arrange the control board and electrical components.

[0075] Moreover, this can avoid the existence of sharp structures inside the accommodation cavity 45, resulting in local retention of the airflow in the accommodation cavity 45, and can ensure the heat dissipation effect of the electric control box 40.

[0076] Furthermore, a first air guiding cavity 46 can be formed between the first baffle 43 and the first convex part 41. The first air guiding cavity 46 is communicated with the accommodation cavity 45, and it can be understood that the first air guiding cavity 46 is communicated with the heat dissipation inlet 411. In this way, the first air guiding cavity 46 can guide the airflow near the heat dissipation inlet 411 to the accommodation cavity 45, making the air intake of the electric control box 40 more stable and smooth, and improving the heat dissipation effect of the electric control box 40.

[0077] In addition, a second air guiding cavity 47 can be formed between the second baffle 44 and the second convex part 42. The second air guiding cavity 47 is communicated with the accommodation cavity 45, and it can be understood that the second air guiding cavity 47 is communicated with the heat dissipation outlet 421. In this way, the second air guiding cavity 47 can guide the airflow in the accommodation cavity 45 to the heat dissipation outlet 421, making the air exhaust of the electric control box 40 more stable and smooth, and improving the heat dissipation effect of the electric control box 40.

[0078] In some other embodiments of the present utility model, first concave parts and second concave parts are respectively arranged on the relatively two sides of the electric control box 40 in the left-right direction, and the first concave part and the second concave part protrude in the direction away from the accommodation cavity 45. Among them, the heat dissipation inlet 411 is arranged in the first concave part, and the first baffle 43 is arranged at an interval from the first concave part. And, the heat dissipation outlet 421 is arranged in the second concave part, and the second baffle 44 is arranged at an interval from the second concave part. Details are not described herein.

[0079] In still some other embodiments of the present utility model, the electric control box 40 includes a first plate part and a second plate part. The first plate part and the second plate part are arranged at an interval in the left-right direction. Both the first plate part and the second plate part are designed as flat plates. The heat dissipation inlet 411 and the heat dissipation outlet 421 are correspondingly arranged on the first plate part and the second plate part directly, and the first baffle 43 is arranged at an interval from the first plate part, and the second baffle 44 is arranged at an interval from the second plate part. Details are not described herein either.

[0080] Combined with Figure 9As shown in the figure, a first ventilation opening 431 is provided on the first baffle 43. The first air guide cavity 46 is communicated with the accommodation cavity 45 through the first ventilation opening 431. In this way, air flow can sequentially enter the accommodation cavity 45 through the heat dissipation inlet 411, the first air guide cavity 46 and the first ventilation opening 431, so as to further ensure that the air flow smoothly enters the accommodation cavity 45 from the indoor environment, and the heat dissipation effect of the electronic control box 40 can be improved.

[0081] Combined with Figure 10 As shown in the figure, a second ventilation opening 441 is provided on the second baffle 44. The second air guide cavity 47 is communicated with the accommodation cavity 45 through the second ventilation opening 441. In this way, air flow can flow out sequentially through the second ventilation opening 441, the second air guide cavity 47 and the heat dissipation outlet 421, so as to further ensure that the air flow smoothly flows out of the electronic control box 40 from the accommodation cavity 45, and the heat dissipation effect of the electronic control box 40 can be improved.

[0082] Combined with Figure 9 As shown in the figure, at least part of the first convex portion 41 is provided with a heat dissipation inlet 411. The first baffle 43 corresponds to the heat dissipation inlet 411. The projected area of the first baffle 43 in the left-right direction is larger than the projected area of the heat dissipation inlet 411 in the left-right direction. At least part of the first baffle 43 corresponds to the part of the first convex portion 41 where the heat dissipation inlet 411 is not provided.

[0083] Specifically, when a flame appears in the electronic control box 40 and may escape through the heat dissipation inlet 411, due to the air flow in the electronic control box 40, the air flow will change the direction of the flame, so that the direction of the flame is no longer only along the left-right direction, but may also be upward or downward. At this time, the flame may cross the first baffle 43 and escape from the heat dissipation inlet 411. Therefore, it is necessary to optimize the first baffle 43.

[0084] By providing a heat dissipation inlet 411 on at least part of the first convex portion 41 and not providing a heat dissipation inlet 411 on at least part of the first convex portion 41, not only does the first baffle 43 correspond to the heat dissipation inlet 411, but also the projected area of the first baffle 43 in the left-right direction is larger than the projected area of the heat dissipation inlet 411 in the left-right direction, and at least part of the first baffle 43 corresponds to the part of the first convex portion 41 where the heat dissipation inlet 411 is not provided.

[0085] That is: a part of the first baffle 43 corresponds to the part of the first convex portion 41 where the heat dissipation inlet 411 is provided, and another part of the first baffle 43 corresponds to the part of the first convex portion 41 where the heat dissipation inlet 411 is not provided.

[0086] Thus, on the premise of ensuring that the first baffle 43 completely blocks the heat dissipation inlet 411, even if there is a situation where a flame crosses the first baffle 43 and reaches the first convex portion 41, the flame will only reach the portion of the first convex portion 41 where there is no heat dissipation inlet 411. In this way, the portion of the first convex portion 41 where there is no heat dissipation inlet 411 can block the flame, and can more effectively and reliably prevent the flame from escaping through the heat dissipation inlet 411, improving the safety and reliability of the electronic control box 40.

[0087] Combined with Figure 10 As shown, at least part of the second convex portion 42 is provided with a heat dissipation outlet 421. The second baffle 44 corresponds to the heat dissipation inlet 411. The projected area of the second baffle 44 in the left-right direction is larger than the projected area of the heat dissipation outlet 421 in the left-right direction. At least part of the second baffle 44 corresponds to the portion of the second convex portion 42 where there is no heat dissipation inlet 411.

[0088] Specifically, when a flame appears in the electronic control box 40 and may escape through the heat dissipation outlet 421, due to the presence of air flow in the electronic control box 40, the air flow will change the direction of the flame, so that the direction of the flame is no longer only along the left-right direction, but may also be upward or downward. At this time, the flame may cross the second baffle 44 and escape from the heat dissipation outlet 421. Therefore, it is necessary to optimize the second baffle 44.

[0089] By providing at least part of the second convex portion 42 with a heat dissipation outlet 421, and not providing a heat dissipation outlet 421 in at least part of the second convex portion 42, and not only making the second baffle 44 correspond to the heat dissipation outlet 421, but also making the projected area of the second baffle 44 in the left-right direction larger than the projected area of the heat dissipation outlet 421 in the left-right direction, so that at least part of the second baffle 44 corresponds to the portion of the second convex portion 42 where there is no heat dissipation outlet 421.

[0090] That is: a part of the second baffle 44 corresponds to the portion of the second convex portion 42 where the heat dissipation outlet 421 is provided, and another part of the second baffle 44 corresponds to the portion of the second convex portion 42 where there is no heat dissipation outlet 421.

[0091] Thus, on the premise of ensuring that the second baffle 44 completely blocks the heat dissipation outlet 421, even if there is a situation where a flame crosses the second baffle 44 and reaches the second convex portion 42, the flame can only reach the portion of the second convex portion 42 where there is no heat dissipation outlet 421. In this way, the portion of the second convex portion 42 where there is no heat dissipation outlet 421 can block the flame, and can more effectively and reliably prevent the flame from escaping through the heat dissipation outlet 421, improving the safety and reliability of the electronic control box 40.

[0092] In some embodiments of the present invention, combined with Figures 5 - 10As shown, there are multiple heat dissipation inlets 411, and the multiple heat dissipation inlets 411 are arranged at intervals. Moreover, there are multiple heat dissipation outlets 421, and the multiple heat dissipation outlets 421 are arranged at intervals. That is, different from setting a large-sized heat dissipation inlet 411 and a large-sized heat dissipation outlet 421, the present application sets multiple small-sized heat dissipation inlets 411 arranged at intervals, and multiple small-sized heat dissipation outlets 421 arranged at intervals.

[0093] On the one hand, it can ensure that the air flow normally passes through the electronic control box 40 and ensure the heat dissipation effect of the electronic control box 40.

[0094] On the other hand, it can play a blocking role against foreign objects in the outside world such as dust, impurities, water vapor, etc., prevent foreign objects in the outside world from entering the inside of the electronic control box 40 through the heat dissipation inlet 411 and the heat dissipation outlet 421, avoid damage to the control board and electrical components inside the electronic control box 40, and improve the reliability of the electronic control box 40 and even the indoor unit 100 of the air conditioner.

[0095] In other embodiments of the present utility model, both the heat dissipation inlet 411 and the heat dissipation outlet 421 are provided with multiple grid members arranged at intervals. The multiple grid members arranged at intervals divide the heat dissipation inlet 411 into multiple sub-heat dissipation inlets arranged at intervals, and the multiple grid members arranged at intervals divide the heat dissipation outlet 421 into multiple sub-heat dissipation outlets arranged at intervals.

[0096] It can be understood that the grid members can, on the premise of not affecting the heat dissipation effect of the electronic control box 40, prevent foreign objects in the outside world from entering the inside of the electronic control box 40 through the heat dissipation inlet 411 and the heat dissipation outlet 421, and improve the reliability of the electronic control box 40. Details are not described herein.

[0097] Combined with Figures 1 - 3 As shown, the indoor unit 100 of the air conditioner according to the embodiment of the present utility model may include: a housing 10, an indoor heat exchanger 20, an indoor fan assembly 30, and an electronic control box 40.

[0098] Among them, the indoor heat exchanger 20, the indoor fan assembly 30, and the electronic control box 40 are all arranged inside the housing 10. In this way, the housing 10 can play a role of covering and protecting the indoor heat exchanger 20, the indoor fan assembly 30, and the electronic control box 40, prevent the erosion of foreign objects in the outside world or the impact of external forces from damaging the structures of each component, thereby improving the structural reliability of the indoor unit 100 of the air conditioner and ensuring that the indoor unit 100 of the air conditioner can work normally.

[0099] Further, the housing 10 is arranged in an indoor environment. The housing 10 is provided with a main air inlet 13 and an air outlet 12. The main air inlet 13 and the air outlet 12 are oppositely arranged in the up-down direction, so that indoor air can enter the housing 10 through the main air inlet 13, facilitating the heat exchange between the indoor air and the indoor heat exchanger 20. The indoor fan assembly 30 is located on one side of the indoor heat exchanger 20. The indoor fan assembly 30 drives the indoor air to enter the housing 10 from the main air inlet 13, and after the indoor air exchanges heat with the indoor heat exchanger 20 to form a heat exchange air flow, it is driven by the indoor fan assembly 30 to flow out of the housing 10 from the air outlet 12.

[0100] In this way, the indoor unit 100 of the air conditioner can selectively control the indoor air to enter the housing 10 through the main air inlet 13, and the indoor air can exchange heat with the indoor heat exchanger 20 to form a heat exchange air flow, and then is driven by the indoor fan assembly 30 to flow out of the housing 10 from the air outlet 12, thereby realizing cooling or heating for the room.

[0101] Combined with Figures 1 - 3 As shown, the housing 10 is also provided with a heat dissipation air inlet 11. The heat dissipation air inlet 11 is arranged on one side of the housing 10 in the left-right direction. In the left-right direction of the housing 10, the electric control box 40 is arranged between the indoor fan assembly 30 and the heat dissipation air inlet 11.

[0102] Specifically, the electric control box 40 is provided with a control board and electrical components for controlling the operation of each functional module of the indoor unit 100 of the air conditioner.

[0103] It can be understood that the electrical components will generate heat during operation. If the heat dissipation of the electric control box 40 is not carried out in time, the heat accumulated in the electric control box 40 will be too high, which will shorten the service life of the electrical components, cause the electrical components in the electric control box 40 to thermally fail, and in a more serious situation, the electrical components will be burned out, resulting in damage to the indoor unit 100 of the air conditioner.

[0104] By arranging the heat dissipation air inlet 11 on one side of the housing 10 in the left-right direction, and in the left-right direction of the housing 10, arranging the electric control box 40 between the indoor fan assembly 30 and the heat dissipation air inlet 11, the indoor fan assembly 30 can drive the air to enter the housing 10 from the outside through the heat dissipation air inlet 11 and make the air flow through the electric control box 40. In this way, the heat of the electric control box 40 can be taken away, the temperature inside the electric control box 40 can be reduced, and it can prevent the electrical components inside the electric control box 40 from overheating and failing or even burning out.

[0105] Combined with Figures 1 - 3 As shown, heat dissipation inlets 411 and heat dissipation outlets 421 are respectively arranged on the opposite sides of the electric control box 40 in the left-right direction. The heat dissipation inlets 411 and the heat dissipation outlets 421 are connected. Moreover, the heat dissipation inlets 411 are correspondingly connected to the heat dissipation air inlet 11, and the heat dissipation outlets 421 are correspondingly connected to the indoor fan assembly 30.

[0106] It can be understood that, when the electric control box 40 is arranged between the indoor fan assembly 30 and the heat dissipation air inlet 11, and the air flow passes through the surface of the electric control box 40, although the heat of the electric control box 40 can be taken away, the heat taken away is relatively limited, and there may still be heat accumulation inside the electric control box 40, resulting in the failure or even burning of the electrical components inside the electric control box 40.

[0107] By providing a heat dissipation inlet 411 and a heat dissipation outlet 421 on the electric control box 40, it can be ensured that the air inside the electric control box 40 and the air outside the electric control box 40 communicate with each other. In this way, the heat inside the electric control box 40 can be dissipated to the outside of the electric control box 40 following the air flow, thereby reducing the heat inside the electric control box 40 and lowering the temperature inside the electric control box 40, and preventing the electrical components inside the electric control box 40 from failing or even burning due to excessive heat accumulation.

[0108] Furthermore, it can be understood that the heat dissipation effect of the electric control box 40 is related to the air volume and air flow velocity entering the electric control box 40. By providing a heat dissipation air inlet 11 on one side of the casing 10 in the left - right direction, the heat dissipation inlet 411 is correspondingly communicated with the heat dissipation air inlet 11, and the heat dissipation outlet 421 is correspondingly communicated with the indoor fan assembly 30. When the indoor fan assembly 30 operates, a negative pressure can be formed near the electric control box 40, sucking a large amount of indoor ambient air into the electric control box 40 successively through the heat dissipation air inlet 11 and the heat dissipation inlet 411, and flowing out of the electric control box 40 quickly through the heat dissipation outlet 421.

[0109] In this way, a high - speed air flow with a large air volume can be formed inside the electric control box 40. During the flow of this air flow inside the electric control box 40, it can flow through the electrical components on the control board, take away the heat of the electrical components, reduce the temperature inside the electric control box 40 and the electrical components, and ensure the stable operation of the electrical components on the control board.

[0110] In this way, a high - speed air flow with a large air volume can be formed inside the electric control box 40. During the flow of this air flow inside the electric control box 40, it can flow through the electrical components on the control board, take away the heat of the electrical components, reduce the temperature inside the electric control box 40 and the electrical components, and ensure the stable operation of the electrical components on the control board.

[0111] The other configurations and operations of the indoor unit 100 of the air conditioner according to the embodiment of the present utility model are known to those of ordinary skill in the art, and will not be described in detail here.

[0112] The indoor unit 100 of the air conditioner in the present utility model can cooperate with the outdoor unit of the air conditioner to perform refrigeration cycle and heating cycle by using a compressor, a condenser, an expansion valve and an evaporator.

[0113] Specifically, both the refrigeration cycle and the heating cycle include a series of processes involving compression, condensation, expansion, and evaporation, and supply refrigerant to the air that has been conditioned and heat-exchanged.

[0114] The compressor compresses the refrigerant gas and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0115] The expansion valve expands the high-temperature and high-pressure liquid-phase refrigerant condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and absorbs heat from the surrounding environment through the evaporation process. The refrigerant gas in the low-temperature and low-pressure state returns to the compressor.

[0116] It should be noted that when the refrigeration cycle is executed, the outdoor heat exchanger of the outdoor unit of the air conditioner can be used as the condenser, and the indoor heat exchanger 20 of the indoor unit 100 of the air conditioner can be used as the evaporator. When only the heating cycle is required, the indoor heat exchanger 20 of the indoor unit 100 of the air conditioner can be used as the condenser, and the outdoor heat exchanger of the outdoor unit of the air conditioner can be used as the evaporator.

[0117] Throughout the cycle, the temperature of the indoor space can be adjusted, the comfort of the indoor space can be improved, and the user experience can be enhanced.

[0118] In the description of this specification, the descriptions referring to terms such as "specific embodiments", "specific examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0119] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. An air conditioner indoor unit, comprising: A casing, wherein the casing is provided with a heat dissipation air inlet, a main air inlet and an air outlet, the main air inlet and the air outlet are arranged opposite to each other in the up-down direction, and the heat dissipation air inlet is arranged on one side of the casing in the left-right direction; an indoor heat exchanger, the indoor heat exchanger being arranged in the casing; An indoor fan assembly, the indoor fan assembly is arranged in the housing, the indoor fan assembly drives air from the outside to enter the housing through the main air inlet and the heat dissipation air inlet, and the air flows to the indoor heat exchanger through the indoor fan assembly, and flows out from the air outlet after exchanging heat with the indoor heat exchanger to form a heat exchange airflow; An electric control box, the electric control box is arranged in the casing; It is characterized in that, in the left and right direction of the housing, the electric control box is arranged between the indoor fan assembly and the heat dissipation air inlet; Wherein, a heat dissipation inlet and a heat dissipation outlet are respectively arranged on opposite sides of the left and right directions of the electric control box, the heat dissipation inlet and the heat dissipation outlet are connected, the heat dissipation inlet is connected with the heat dissipation air inlet correspondingly, the heat dissipation outlet is connected with the indoor fan assembly correspondingly, and the projections of the heat dissipation inlet and the heat dissipation outlet in the left and right directions at least partially do not overlap.

2. The air conditioner indoor unit according to claim 1, characterized in that: The projection of the electric control box in the left and right directions is set as the electric control box projection, the electric control box projection is rectangular, and the projections of the heat dissipation inlet and the heat dissipation outlet in the left and right directions are respectively arranged adjacent to two diagonals of the electric control box projection.

3. The air conditioner indoor unit according to claim 2, characterized in that: The heat dissipation inlet is located at the rear side of the electric control box and is adjacent to the end corner below the electric control box, and the heat dissipation outlet is located at the front side of the electric control box and is adjacent to the end corner above the electric control box.

4. The air conditioner indoor unit according to claim 1, characterized in that: The electric control box is provided with: a first baffle, the first baffle corresponding to the heat dissipation inlet in the left-right direction and spaced from each other; The second baffle plate corresponds to the heat dissipation outlet in the left-right direction and is spaced from each other.

5. The air conditioner indoor unit according to claim 4, characterized in that: The electric control box is provided with a housing cavity, the housing cavity is suitable for accommodating electrical components, the housing cavity is respectively connected with the heat dissipation inlet and the heat dissipation outlet, the electric control box is respectively provided with a first protrusion and a second protrusion on opposite sides in the left and right directions, the first protrusion and the second protrusion are respectively provided to protrude in a direction away from the housing cavity, the heat dissipation inlet is provided at the first protrusion, the heat dissipation outlet is provided at the second protrusion, the first baffle is spaced apart from the first protrusion to form a first air guide cavity, and the first air guide cavity is connected with the housing cavity; The second baffle and the second protrusion are spaced apart to form a second air guiding cavity, and the second air guiding cavity is communicated with the accommodating cavity.

6. The air conditioner indoor unit according to claim 5, characterized in that: The first baffle plate is provided with a first vent, and the first air guide cavity is connected with the accommodating cavity through the first vent. The second baffle plate is provided with a second vent, and the second air guide cavity is connected with the accommodating cavity through the second vent.

7. The air conditioner indoor unit according to claim 5, characterized in that: At least a portion of the first raised portion is provided with the heat dissipation inlet, the first baffle corresponds to the heat dissipation inlet, the projection area of ​​the first baffle in the left and right directions is larger than the projection area of ​​the heat dissipation inlet in the left and right directions, and at least a portion of the first baffle corresponds to a portion of the first raised portion where the heat dissipation inlet is not provided.

8. The air conditioner indoor unit according to claim 5, characterized in that: At least a portion of the second raised portion is provided with the heat dissipation outlet, the second baffle corresponds to the heat dissipation inlet, the projection area of ​​the second baffle in the left and right directions is larger than the projection area of ​​the heat dissipation outlet in the left and right directions, and at least a portion of the second baffle corresponds to a portion of the second raised portion where the heat dissipation inlet is not provided.

9. The air conditioner indoor unit according to claim 1, characterized in that: The heat dissipation inlet and the heat dissipation outlet are both provided with a plurality of grille members arranged at intervals.

10. An air conditioner indoor unit, comprising: A casing, wherein the casing is provided with a heat dissipation air inlet, a main air inlet and an air outlet, the main air inlet and the air outlet are arranged opposite to each other in the up-down direction, and the heat dissipation air inlet is arranged on one side of the casing in the left-right direction; an indoor heat exchanger, the indoor heat exchanger being arranged in the casing; An indoor fan assembly, the indoor fan assembly is arranged in the housing, the indoor fan assembly drives air from the outside to enter the housing through the main air inlet and the heat dissipation air inlet, and the air flows to the indoor heat exchanger through the indoor fan assembly, and flows out from the air outlet after exchanging heat with the indoor heat exchanger to form a heat exchange airflow; An electric control box, the electric control box is arranged in the casing; It is characterized in that, in the left and right direction of the housing, the electric control box is arranged between the indoor fan assembly and the heat dissipation air inlet; Among them, a heat dissipation inlet and a heat dissipation outlet are respectively arranged on the opposite sides of the left and right directions of the electric control box, the heat dissipation inlet and the heat dissipation outlet are connected, the heat dissipation inlet is connected with the heat dissipation air inlet correspondingly, and the heat dissipation outlet is connected with the indoor fan assembly correspondingly.

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