Indoor unit of air conditioner

Abstract

The utility model discloses an air conditioner indoor unit which comprises a unit body, the unit body comprises an airflow driving part and a heat exchanger, the unit body further comprises a machine shell and an electric control box, a first air inlet and a first air outlet are formed in the opposite sides of the machine shell in the first direction respectively, and a first installation opening is formed in one side face of the machine shell in the second direction; an electric control board is arranged in the electric control box, one side of the electric control board is connected with a radiator, and the radiator extends out of the electric control box and partially extends into the air duct cavity through the first mounting port; the electric control box is connected to the machine shell, and a gap is reserved between the electric control box and the outer side face of the machine shell to form a heat dissipation channel. When the airflow driving part operates in the air channel cavity, air outside the air channel cavity flows to the radiator from the heat dissipation channel. According to the air conditioner indoor unit, the temperature of the electric control board is prevented from being too high in the heating process, it is guaranteed that the electric control board can effectively dissipate heat, the heat dissipation efficiency of the electric control board is improved in the refrigerating process, and the heat dissipation requirements under the refrigerating working condition and the heating working condition are met.

Description

Technical Field

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

[0002] In the prior art, the heat dissipation problem of the air conditioner electronic control board has always been one of the key factors affecting the performance and reliability of the air conditioner. Traditional heat dissipation solutions mostly rely on the air flow in the air duct cavity for heat dissipation.

[0003] However, under extreme operating conditions, especially in the heating mode, the air temperature in the air duct cavity rises, and the heat dissipation effect on the electronic control board drops sharply, resulting in too high a temperature of the electronic control board, which may further cause the system to protect and shut down, seriously affecting the heating effect and operating stability of the air conditioner; in addition, existing solutions often have difficulty in taking into account the heat dissipation requirements under both the cooling and heating conditions. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides an air conditioner indoor unit, which can prevent the temperature of the electronic control board from being too high during heating, ensure effective heat dissipation of the electronic control board, and improve the heat dissipation efficiency of the electronic control board during cooling, and can take into account the heat dissipation requirements under both the cooling and heating conditions.

[0005] The air conditioner indoor unit according to an embodiment of the utility model includes: a body, the body includes an air duct cavity, an air flow driving member and a heat exchanger are arranged in the air duct cavity, and the body further includes: a casing and an electronic control box. The casing is respectively provided with a first air inlet and a first air outlet on opposite sides along a first direction, and a first installation opening is further provided on one side surface of the casing along a second direction; an electronic control board is arranged in the electronic control box, a radiator is connected to one side of the electronic control board, the radiator extends out of the electronic control box and partially extends into the air duct cavity through the first installation opening; the electronic control box is connected to the casing and a gap is left between the electronic control box and the outer side surface of the casing to form a heat dissipation channel; when the air flow driving member operates in the air duct cavity, the gas outside the air duct cavity flows through the radiator from the heat dissipation channel and then flows into the air duct cavity at the first installation opening.

[0006] The air conditioner indoor unit according to an embodiment of the utility model is provided with a heat dissipation channel between the electronic control box and the casing, and an air flow driving member is arranged in the casing. During heating, the cold air outside is allowed to enter the radiator through the heat dissipation channel to dissipate heat from the radiator, which can prevent the problem that the high-temperature air flow in the body causes the temperature of the electronic control board to be too high during heating, ensure effective heat dissipation of the electronic control board, and during cooling, utilize the outside air flow passing through the heat dissipation channel and the cold air flow in the body to jointly enter the position where the radiator is located to improve the heat dissipation efficiency of the electronic control board.

[0007] According to the embodiment of the utility model, the air conditioner indoor unit also includes a mounting plate, the mounting plate is provided with a second mounting port, the electric control board is connected to the radiator, and the radiator passes through the second mounting port from one side of the mounting plate to the other side, and the electric control board is connected to the mounting plate, the electric control box is provided with a third mounting port, the radiator extends along the third mounting port and after extending, partially extends into the air duct cavity along the first mounting port.

[0008] According to the air-conditioning indoor unit of the embodiment of the utility model, a retaining rib is provided on the side of the mounting plate away from the electric control board, and the retaining rib is arranged around the radiator; the radiator includes a plurality of cooling fins, and a fin channel is formed between adjacent cooling fins, and a ventilation hole connected to the fin channel is provided at a position opposite to the retaining rib and the fin channel, and the ventilation hole is connected to the cooling channel.

[0009] According to the indoor unit of the air conditioner in the embodiment of the utility model, the ventilation hole and the fin channel are connected along the first direction, and the electric control box and the casing are distributed along the second direction.

[0010] According to the indoor unit of the air conditioner in the embodiment of the utility model, the fin channel is also connected with the air duct cavity along the first direction and along the second direction.

[0011] According to the air conditioner indoor unit of the embodiment of the utility model, the width of the heat dissipation channel along the second direction is greater than the length of the ventilation hole extending along the second direction.

[0012] According to the air conditioner indoor unit of the embodiment of the utility model, the area of the mounting plate is larger than the opening area of the third mounting opening, and the mounting plate is connected to the inner wall of the electric control box.

[0013] According to the air conditioner indoor unit of the embodiment of the utility model, the electric control box is connected to a bending portion at one end portion facing the body, the bending portion includes a first connecting surface and a second connecting surface that are bent and connected, the first connecting surface is connected to the electric control box, and the second connecting surface and / or the first connecting surface are connected to the casing via a connecting structure.

[0014] According to the air conditioner indoor unit of an embodiment of the utility model, the second connecting surface is provided with a connecting hole, and the connecting structure includes a third connecting surface and a fourth connecting surface that are bent and connected to each other, the third connecting surface is connected to the casing, and an end of the fourth connecting surface passes through the connecting hole and the fourth connecting surface is connected to the first connecting surface.

[0015] According to the indoor unit of the air conditioner in the embodiment of the utility model, the airflow driving member includes an airflow outlet, and the airflow outlet is arranged opposite to the radiator along the first direction.

[0016] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0018] Figure 1 is a cross-sectional view of an indoor air conditioner of an embodiment of the present utility model Figure 1 ;

[0019] Figure 2 is a top view of the connection between the electric control box and the housing of an indoor air conditioner of an embodiment of the present utility model Figure 1 ;

[0020] Figure 3 is a schematic structural view of a mounting plate of an indoor air conditioner of an embodiment of the present utility model

[0021] Figure 4 is a side view of the connection of the mounting plate, radiator and electric control board of an indoor air conditioner of an embodiment of the present utility model

[0022] Figure 5 is a schematic view of the housing of an indoor air conditioner of an embodiment of the present utility model

[0023] Figure 6 is a schematic structural view of the electric control box of an indoor air conditioner of an embodiment of the present utility model

[0024] Figure 7 is a schematic connection view between the electric control box and the housing

[0025] Reference numerals:

[0026] body 100, housing 101,

[0027] first mounting opening 1011, first air inlet 1, first air outlet 2, air flow driving member 3, heat exchanger 4, electric control box 5, electric control board 51, third mounting opening 52, bending portion 53, first connection surface 531, second connection surface 532, connection hole 5321, radiator 6, heat dissipation fins 61, fin channels 611, heat dissipation channels 7, mounting plate 8, second mounting opening 81, retaining ribs 82, ventilation holes 821, connection structure 9, third connection surface 91, fourth connection surface 92, end portion 921, body portion 922, fifth connection surface 93. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] 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 represent the same or similar elements or elements with 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.

[0029] 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", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and 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 thus should not be construed as a limitation of the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0030] In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0031] The following refers to Figures 1 - 7 Describe an air conditioner indoor unit according to an embodiment of the present utility model. A heat dissipation channel 7 is provided between an electric control box 5 and a housing 101, and an air flow driving member 3 is provided inside the housing 101. When heating, the cold air outside is allowed to enter the position of a radiator 6 through the heat dissipation channel 7 to dissipate heat from the radiator 6, which can prevent the high-temperature air flow inside the body 100 from affecting the heat dissipation of the radiator 6 during heating, ensure the effective heat dissipation of the radiator 6, so as to effectively dissipate heat from an electric control board 51. When cooling, the outside air flow enters the radiator 6 through the heat dissipation channel 7, and the cold air flow inside the body 100 enters the radiator 6 to jointly dissipate heat from the radiator 6, so as to improve the heat dissipation efficiency of the electric control board 51.

[0032] As Figures 1 - 7As shown in the figure, the indoor unit of the air conditioner according to the embodiment of the present utility model includes: a body 100, a duct cavity is included in the body 100, an air flow driving member 3 and a heat exchanger 4 are provided in the duct cavity, and the body 100 further includes: a casing 101 and an electric control box 5.

[0033] Wherein, a first air inlet 1 and a first air outlet 2 are respectively provided on opposite sides of the casing 101 along a first direction, and a first mounting opening 1011 is further provided on one side surface of the casing 101 along a second direction; an electric control board 51 is provided in the electric control box 5, a radiator 6 is connected to one side of the electric control board 51, the radiator 6 extends out of the electric control box 5 and partially extends into the duct cavity through the first mounting opening 1011; the electric control box 5 is connected to the casing 101 and a gap is left between the electric control box 5 and the outer side surface of the casing 101 to form a heat dissipation channel 7; when the air flow driving member 3 operates in the duct cavity, the gas outside the duct cavity flows through the radiator 6 from the heat dissipation channel 7 and then flows into the duct cavity at the first mounting opening 1011.

[0034] In practice, the main function of the duct cavity of the indoor unit of the air conditioner is to guide and distribute the air flow to ensure the efficient operation of the indoor unit of the air conditioner and optimize the air quality; the air flow driving member 3 can be a blower, a fan, etc., and mainly sends the air flow in the duct cavity into the room. The air flow enters the duct cavity through the first air inlet 1 along the first direction and flows out through the first air outlet 2. At this time, the first direction is Figure 1 the up and down direction, and the electric control box 5 is installed on one side of the casing 101 along the second direction, that is, the second direction is Figure 1 the left and right direction.

[0035] During refrigeration, the heat exchanger 4 is the evaporator in the body 100, and its function is to absorb the heat in the indoor air, evaporate the refrigerant, so as to reduce the indoor temperature; in the heating mode, the functions of the evaporator and the condenser are interchanged. At this time, the evaporator is located outdoors and absorbs the heat in the outdoor air, while the condenser is located indoors and releases heat to the indoor air, then the temperature of the indoor air rises to achieve the heating effect.

[0036] Specifically, during heating, the air flow temperature in the air duct cavity of the body 100 is relatively high. The radiator 6 connected to the electronic control board 51 mainly dissipates heat from the electronic control board 51 to keep the electronic control board 51 working properly. The electronic control board 51 is connected inside the electronic control box 5, and the radiator 6 extends outward along the electronic control box 5. Then, a part of the radiator 6 can extend into the air duct cavity. When the air conditioner is in heating mode, the air flow temperature in the air duct cavity is relatively high, which affects the heat dissipation of the radiator 6. By leaving a gap between the electronic control box 5 and the housing 101 to form a heat dissipation channel 7, during heating, the temperature inside the body 100 of the air conditioner is higher than the temperature outside the body 100, that is, the ambient temperature is lower than the temperature inside the body 100. Through the air flow driving member 3 to generate an air flow pressure, the outside air can enter the position where the radiator 6 is located through the heat dissipation channel 7. At this time, the radiator 6 is mainly cooled by the air outside the housing 101, improving the heat dissipation efficiency of the radiator 6, so that the radiator 6 can effectively dissipate heat from the electronic control board 51, preventing the working temperature of the electronic control board 51 from being too high, which may lead to poor reliability when the air conditioner operates in heating mode, resulting in temperature - too - high shutdown protection and affecting comfort. Thus, the working performance of the air conditioner is improved by reducing the temperature of the electronic control board 51.

[0037] In addition, when cooling, the air flow temperature in the air duct cavity of the body 100 decreases. The main heat dissipation is that the cold air inside the air duct cavity dissipates heat from the radiator 6. At this time, the air duct cavity is a negative pressure area, and the outside air enters the radiator 6 from the heat dissipation channel 7 between the electronic control box 5 and the housing 101 to dissipate heat from the radiator 6. However, at this time, the air in the air duct cavity is the air cooled by the evaporator, with a relatively low temperature, playing a major role in heat dissipation.

[0038] Therefore, the indoor unit of the air conditioner according to the embodiment of the present invention can utilize the outside cold air to enter the radiator 6 through the heat dissipation channel 7 during heating to cool the radiator 6, thereby preventing the temperature of the electronic control board 51 from being too high and ensuring that the electronic control board 51 can effectively dissipate heat. And during cooling, it utilizes the outside air flow and the cold air flow inside the body 100 to enter the radiator 6 through the heat dissipation channel 7 together, improving the heat dissipation efficiency of the electronic control board 51.

[0039] In some embodiments, the indoor unit of the air conditioner further includes a mounting plate 8. The mounting plate 8 is provided with a second mounting opening 81. The electronic control board 51 is connected to the radiator 6, and the radiator 6 passes through the second mounting opening 81 from one side of the mounting plate 8 to the other side, and the electronic control board 51 is connected to the mounting plate 8. The electronic control box 5 is provided with a third mounting opening 52, and the radiator 6 extends along the third mounting opening 52 and partially extends into the air duct cavity along the first mounting opening 1011 after extending out.

[0040] During actual installation, first, the radiator 6 and the electric control board 51 are connected as a whole, and the mounting plate 8 is provided with a second mounting port 81. After the radiator 6 and the electric control board 51 are installed as a whole, the electric control board 51 is located on one side of the mounting plate 8, and the radiator 6 extends out of the other side of the mounting plate 8. By providing the mounting plate 8, the installation between the radiator 6, the electric control board 51 and the electric control box 5 is facilitated, the strength of the installation location can be improved, and the electric control board 51 can be supported and protected to prevent deformation of the electric control board 51.

[0041] Combination Figure 2 and Figure 3 As shown, a portion of the radiator 6 extends into the air duct cavity along the first installation opening 1011, and the position of the radiator 6 between the electric control box 5 and the casing 101 is directly opposite to the heat dissipation channel 7. The radiator 6 is provided with heat dissipation channels 7 on both sides along the first direction, so that the air outside the air duct cavity can enter the radiator 6 along both sides of the first direction of the radiator 6 under the action of the airflow driving member 3 of the air duct cavity, so as to dissipate the heat of the radiator 6, thereby improving the heat dissipation efficiency of the radiator 6, thereby improving the heat dissipation efficiency of the radiator 6 to the electric control board 51.

[0042] In some embodiments, a retaining rib 82 is provided on the side of the mounting plate 8 facing away from the electronic control board 51, and the retaining rib 82 is arranged around the radiator 6; the radiator 6 includes a plurality of cooling fins 61, and a fin channel 611 is formed between adjacent cooling fins 61, and a ventilation hole 821 connected to the fin channel 611 is provided at a position opposite to the retaining rib 82 and the fin channel 611, and the ventilation hole 821 is connected to the cooling channel 7.

[0043] In practice, the ribs 82 are provided to protect the position of the radiator 6 exposed to the heat dissipation channel 7, so as to prevent the radiator 6 from being exposed for a long time and causing a lot of dust to enter the radiator 6; Figure 3 and Figure 4 As shown, Figure 4 for Figure 1 The side view of the installation of the electric control box 5 and the housing 101, that is, Figure 4 This is the perspective of the airflow from the heat dissipation channel 7 flowing into the heat sink 6. Figure 4 The ventilation holes 821 provided on the retaining rib 82 are directly opposite to the fin channels 611 formed by the multiple heat dissipation fins 61 of the radiator 6. At this time, the external air first enters the ventilation holes 821, and then enters the fin channels 611 formed by the adjacent heat dissipation fins 61 from the ventilation holes 821. That is to say, when the air conditioner is heating, the airflow with a lower external temperature can enter between the multiple adjacent heat dissipation fins 61 of the radiator 6, thereby evenly dissipating the heat of the radiator 6.

[0044] Further, when the cross-section of the radiator 6 is square, the baffle rib 82 is also square. One set of opposite faces of the baffle rib 82 is not provided with ventilation holes 821, and the other set of opposite faces is provided with ventilation holes 821. When the air conditioner is in heating mode, the outside cold air can be preferably guided to the ventilation holes 821, and then to the fin channels 611 of the radiator 6, improving the heat dissipation efficiency of the outside cold air on the radiator 6.

[0045] In some embodiments, the ventilation holes 821 and the fin channels 611 communicate along a first direction, and the electronic control box 5 and the housing 101 are distributed along a second direction.

[0046] In practice, the first direction is Figure 1 the distribution direction of the first air inlet 1 and the first air outlet 2, that is, Figure 4 the perspective is the perspective of the side of the first air inlet 1. In Figure 4 the up and down direction, the heat dissipation fins 61 of the radiator 6 are blocked by the baffle rib 82, that is, the baffle rib 82 is not provided with ventilation holes 821 in Figure 4 the up and down direction, and is provided with ventilation holes 821 in Figure 1 the direction of the first air inlet 1 and the first air outlet 2, facilitating the entry of outside air into the heat dissipation channel 7 and then concentrating on entering the fin channels 611 of the radiator 6 through the ventilation holes 821, improving the heat dissipation efficiency of the outside cold air on the radiator 6.

[0047] The second direction is the distribution direction of the electronic control box 5 and the housing 101, that is, there is a gap between the electronic control box 5 and the housing 101 in the second direction, and the width of the gap in the second direction is the width of the heat dissipation channel 7. The second direction is perpendicular to the first direction. While ensuring the connection between the radiator 6, the electronic control box 5, and the housing 101, it does not affect the entry of outside air into the heat dissipation channel 7. At the same time, the radiator 6 is connected to the housing 101, improving the integrity among the electronic control box 5, the electronic control board 51, and the radiator 6 and the housing 101.

[0048] In some embodiments, the fin channels 611 also communicate with the air duct cavity along the first direction and along the second direction.

[0049] Among them, a plurality of fin channels 611 are formed between the plurality of heat dissipation fins 61, and each fin channel 611 is along Figure 1If the directions of the first air inlet 1 and the first air outlet 2 are unobstructed, then the external air can enter the radiator 6 from both sides in the first direction of the radiator 6. At the same time, after multiple heat dissipation fins 61 extend into the air duct cavity, the fin channels 611 formed between adjacent heat dissipation fins 61 are not only connected to the air duct cavity in the second direction, that is, in the distribution direction between the electronic control box 5 and the body 100, but also the heat dissipation fins 61 extending into the air duct cavity are connected to the air duct cavity on both sides in the first direction. At this time, after the external air enters the fin channels 611, it enters the body 100 from the fin channels 611. During heating, it can prevent the part of the radiator 6 extending into the air duct cavity from not dissipating heat effectively, and the external air can also dissipate heat from the part of the radiator 6 extending into the air duct cavity. Thus, the heat dissipation efficiency of the radiator 6 is improved.

[0050] In some embodiments, the width of the heat dissipation channel 7 in the second direction is greater than the length of the ventilation hole 821 extending in the second direction.

[0051] In practice, after the air enters the heat dissipation channel 7, there can be more air flowing rapidly and in large quantities along the heat dissipation channel 7 into the ventilation hole 821, and further enters the fin channels 611 of the radiator 6 from the ventilation hole 821, improving the heat dissipation efficiency of the radiator 6, and thus improving the heat dissipation efficiency of the radiator 6 for the electronic control board 51.

[0052] In some embodiments, the area of the mounting plate 8 is greater than the opening area of the third mounting opening 52, and the mounting plate 8 is connected to the inner wall of the electronic control box 5.

[0053] That is to say, when the mounting plate 8 is installed inside the electronic control box 5, the mounting plate 8 can block the third mounting opening 52 of the electronic control box 5. The area of the third mounting opening 52 can be equal to or greater than the cross-sectional area of the radiator 6, so that the radiator 6 can extend out of the electronic control box 5. When the area of the mounting plate 8 is greater than the opening area of the third mounting opening 52, the connection area between the mounting plate 8 and the inner wall of the electronic control box 5 increases, thereby improving the reliability of the connection between the mounting plate 8 and the electronic control box 5, and also improving the reliability of the installation between the electronic control board 51, the radiator 6 and the electronic control box 5.

[0054] As Figure 2 shown, the widths of the electronic control board 51 and the mounting plate 8 in the direction of the first air inlet 1 and the first air outlet 2 of Figure 1 are greater than the width of the second mounting opening 81. At this time, the mounting plate 8 can leave an area for connection with the inner wall of the electronic control box 5. Of course, the mounting plate 8 is at Figure 4The width extending in the up and down direction is greater than the height of the third mounting opening 52 of the electric control box 5, that is, the mounting plate 8 can be connected to the inner wall of the electric control box 5 around the third mounting opening 52, thereby ensuring the connection reliability and uniform stress of the mounting plate 8, so that the electric control board 51 and the radiator 6 can be more reliably connected to the electric control box 5, and the stability of the radiator 6 extending into the air duct cavity is improved.

[0055] In some embodiments, a bending portion 53 is connected to one end of the electric control box 5 facing the body 100. The bending portion 53 includes a first connection surface 531 and a second connection surface 532 that are bent and connected. The first connection surface 531 is connected to the electric control box 5, and the second connection surface 532 and / or the first connection surface 531 are connected to the casing 101 through a connection structure 9.

[0056] Specifically, by providing the bending portion 53, a gap can be left between the electric control box 5 and the casing 101 to form a heat dissipation channel 7, and at the same time, the connection between the electric control box 5 and the casing 101 is ensured. Refer to Figure 7 As shown, the first connection surface 531 is parallel to the outer side surface of the casing 101, and the second connection surface 532 is perpendicular to the first connection surface 531, that is, the second connection surface 532 is perpendicular to the outer side surface of the casing 101. At this time, the width of the second connection surface 532 extending toward the casing 101 determines the width of the heat dissipation channel 7. At the same time, the second connection surface 532 is connected to one end of the connection structure 9, or the first connection surface 531 is connected to one end of the connection structure 9, or the first connection surface 531 and the second connection surface 532 are jointly connected to one end of the connection structure 9. The other end of the connection structure 9 is connected to the outer side surface of the casing 101. Thus, the connection between the electric control box 5 and the casing 101 is realized, and at the same time, the heat dissipation channel 7 can be reasonably left.

[0057] Furthermore, the bending portion 53 is provided at the top of the electric control box 5, so as to facilitate the connection between the bending portion 53 and the connection structure 9. At the same time, the connection structure 9 can also be close to the top position of the electric control box 5, so as to facilitate the connection between the connection structure 9 and the outer side surface of the casing 101, and further facilitate the connection between the electric control box 5 and the casing 101.

[0058] In some embodiments, the second connection surface 532 is provided with a connection hole 5321. The connection structure 9 includes a third connection surface 91 and a fourth connection surface 92 that are bent and connected. The third connection surface 91 is connected to the casing 101, and the end 921 of the fourth connection surface 92 passes through the connection hole 5321 and the fourth connection surface 92 is connected to the first connection surface 531.

[0059] In practice, the third connection surface 91 and the fourth connection surface 92 are connected by a fifth connection surface 93. The third connection surface 91 and the fourth connection surface 92 are parallel, and the fifth connection surface 93 is perpendicular to both the third connection surface 91 and the fourth connection surface 92. The third connection surface 91 and the housing 101 can be connected by bolts. The end 921 of the fourth connection surface 92 extends into the connection hole 5321 at the bottom of the second connection surface 532 from the bottom of the second connection surface 532. And the fourth connection surface 92 includes an end 921 and a body portion 922. The cross-sectional length of the end 921 of the fourth connection surface 92 is less than the cross-sectional length of the body portion 922 in the same direction, and the length of the body portion 922 is less than the length of the connection hole 5321 in the same direction. Then, after the end 921 of the fourth connection surface 92 extends out of the connection hole 5321, the bottom of the second connection surface 532 can contact the top of the body portion 922 to limit the second connection surface 532, and the fourth connection surface 92 and the first connection surface 531 are adhesively connected, such as by welding. At this time, when the connection between the fourth connection surface 92 and the first connection surface 531 becomes loose, since the end 921 of the fourth connection surface 92 extends out of the connection hole 5321 and the body portion 922 limits the second connection surface 532, the electric control box 5 is prevented from falling.

[0060] In addition, the setting of the bent structure of the connection structure 9 can increase the connection area between the connection structure 9 and the housing 101, further improve the reliability of the connection, and have a certain supporting effect on the side of the electric control box 5 close to the housing 101, improving the stability of the electric control box 5.

[0061] In some embodiments, the air flow driving member 3 includes an air flow outlet, and the air flow outlet is disposed opposite to the radiator 6 in the first direction.

[0062] In practice, when the air conditioner is cooling, the air flow driving member 3 in the air duct cavity of the machine body 100 makes the cold air flow towards the radiator 6, thereby improving the heat dissipation effect on the radiator 6. At this time, the air outside the machine body 100 simultaneously enters the fin channel 611 of the radiator 6 through the heat dissipation channel 7 to dissipate heat from different positions of the radiator 6 simultaneously. Moreover, two air flow driving members 3 are provided in the machine body 100 of the embodiment of the present utility model, and the air flow outlets of the two air flow driving members 3 are opposite to each other and are both opposite to the radiator 6, further improving the heat dissipation effect on the radiator 6.

[0063] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some 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 utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0064] Although the embodiments of the present utility model 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 spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. An air conditioner indoor unit, characterized in that, include: A machine body, wherein the machine body includes an air duct cavity, and an air flow driving member and a heat exchanger are arranged in the air duct cavity; The body also includes: A casing, wherein the casing is provided with a first air inlet and a first air outlet on opposite sides along a first direction, and a first mounting opening is further provided on a side surface of the casing along a second direction; An electric control box, wherein an electric control board is arranged in the electric control box, a radiator is connected to one side of the electric control board, the radiator extends out of the electric control box and partially extends into the air duct cavity through the first mounting opening; The electric control box is connected to the housing and a gap is left between the electric control box and the outer side of the housing to form a heat dissipation channel; When the airflow driving member operates in the air duct cavity, the gas outside the air duct cavity flows from the heat dissipation channel through the heat sink and then flows into the air duct cavity at the first installation opening.

2. The air conditioner indoor unit according to claim 1, wherein, It also includes a mounting plate, the mounting plate is provided with a second mounting port, the electric control board is connected to the radiator, and the radiator passes through the second mounting port from one side of the mounting plate to the other side, and the electric control board is connected to the mounting plate, the electric control box is provided with a third mounting port, the radiator extends along the third mounting port and after extending, partially extends into the air duct cavity along the first mounting port.

3. The air conditioner indoor unit according to claim 2, characterized in that, A retaining rib is provided on a side of the mounting plate away from the electric control board, and the retaining rib is arranged around the radiator; The radiator comprises a plurality of heat dissipation fins, fin channels are formed between adjacent heat dissipation fins, ventilation holes communicating with the fin channels are arranged at positions where the retaining ribs face the fin channels, and the ventilation holes are communicated with the heat dissipation channels.

4. The air conditioner indoor unit according to claim 3, characterized in that, The ventilation holes and the fin channels are communicated along the first direction, and the electric control box and the housing are distributed along the second direction.

5. The air conditioner indoor unit according to claim 4, characterized in that, The fin channel is also in communication with the air duct cavity along the first direction and along the second direction.

6. The air conditioner indoor unit according to claim 4, wherein A width of the heat dissipation channel along the second direction is greater than a length of the ventilation hole extending along the second direction.

7. The indoor air conditioner according to claim 2, characterized in that, The area of the mounting plate is larger than the opening area of the third mounting opening, and the mounting plate is connected to the inner wall of the electric control box.

8. The air conditioner indoor unit according to claim 1, characterized in that, The electric control box is connected to a bending portion at one end portion facing the body, and the bending portion includes a first connecting surface and a second connecting surface that are bent and connected. The first connecting surface is connected to the electric control box, and the second connecting surface and / or the first connecting surface are connected to the casing via a connecting structure.

9. The air conditioner indoor unit according to claim 8, characterized in that, The second connection surface is provided with a connection hole, and the connection structure includes a third connection surface and a fourth connection surface that are connected by bending, the third connection surface is connected to the housing, and an end of the fourth connection surface passes through the connection hole and the fourth connection surface is connected to the first connection surface.

10. The air conditioner indoor unit according to claim 1, characterized in that, The airflow driving member comprises an airflow outlet, and the airflow outlet is arranged opposite to the heat sink along the first direction.

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