CN115264647A - Electric control box and air conditioner indoor unit with same - Google Patents

Abstract

The present application relates to an electric control box and an air conditioner internal unit having the same, belonging to the technical field of air conditioners. The electric control box includes: a box body, the box body defines a accommodating cavity, and a radiator and a fixing frame are arranged in the accommodating cavity, The connection of the radiator and the fixing frame together defines an installation cavity, the installation cavity is used for fixing the heat absorbing part, the radiator and the fixing frame are respectively attached to the heat absorbing part, the fixing frame is made of metal material, and the heat absorbing part defines a cooling channel, The cooling channel is used for the cooling fluid to flow therethrough. According to the electric control box of the present invention, the temperature of the heat absorption part can be lowered by the cooling liquid in the heat absorption part, and then the radiation of the cooling energy can be transmitted to the radiator through direct contact, and then transmitted to the electric control assembly through the radiator, and at the same time Since the heat absorption part is arranged in the installation cavity, and the heat sink and the fixing frame are respectively attached to the heat absorption part, the contact between the air and the heat absorption part is reduced, and the generation of condensed water can be effectively reduced.

Description

Electric control box and air conditioner inner unit with it

technical field

The present application relates to the technical field of air conditioners, in particular to an electric control box and an air conditioner inner unit having the same.

Background technique

At present, in base station air conditioners, the compressor is usually placed at the indoor unit, and the main board of the outdoor unit is combined with the main board of the indoor unit. This usually causes the power of the motherboard to be too high, which will dissipate a large amount of heat. If the heat cannot be discharged from the electrical box, it will cause temperature rise of components, which will affect the reliability of the whole machine.

The heat dissipation of the electrical box components of the fixed base station air conditioner is a key consideration. Conventional means use refrigerant heat dissipation, air cooling, etc. to dissipate heat. However, the heat dissipation effect of this kind of alternating cooling and heating is not good, and it will lead to the generation of condensed water, which will cause safety hazards when the condensed water flows through the live parts.

Contents of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention proposes an electric control box, which has high heat dissipation efficiency and good sealing effect, and can effectively reduce the generation of condensed water.

According to the electric control box of the present invention, it includes: a box body, the box body defines an accommodation cavity, a radiator and a fixing frame are arranged in the accommodation cavity, the radiator and the fixing bracket are stacked and connected to jointly define an installation cavity, and the installation cavity is used For fixing the heat absorbing part, the radiator and the fixing frame are attached to the heat absorbing part respectively, the fixing frame is made of metal material, and the heat absorbing part defines a cooling channel for the cooling liquid to flow through.

According to the electric control box of the present invention, the temperature of the heat-absorbing part can be lowered by the coolant in the heat-absorbing part, and then the cooling radiation is transferred to the radiator through direct contact, and then transferred to the electric control component through the radiator, and at the same time Since the heat absorbing part is arranged in the installation cavity, and the radiator and the fixing frame are attached to the heat absorbing part respectively, the contact between the air and the heat absorbing part is reduced, and the generation of condensed water can be effectively reduced.

The electric control box according to the present invention further includes an electric control assembly, which is arranged on a side of the radiator away from the fixing frame and arranged in abutment with the radiator side by side, and/or the heat-absorbing part includes at least one heat dissipation pipe.

Optionally, the fixing frame includes a first mounting surface and a second mounting surface opposite to each other, the first mounting surface faces the side close to the electric control assembly, the radiator is arranged on the first mounting surface, and the fixing frame is provided with a flipper along its circumference. The side, the flange defines a relief opening, which communicates with the external environment of the electric control box, and the relief opening is used for the cooling pipe to protrude from the fixing frame. The deflector is arranged on one side of the heat dissipation pipe and extends toward the relief opening along the extending direction of the heat dissipation pipe.

Optionally, the electric control assembly includes a main control board and a bracket. The main control board is arranged on the side of the bracket away from the fixing frame. Extending to the other end and extending towards the direction close to the relief opening, the limiting boss abuts against the box body.

Optionally, the bracket is provided with a relief opening, the radiator is embedded in the relief opening, and the side of the radiator facing the main control board is attached to the main control board.

Optionally, the main control board includes a power module, and a water baffle is provided on the side of the bracket facing the main control board. Sealed connection with water baffle.

Optionally, the part of the water baffle above the power module is inclined towards the direction close to the relief opening, and the included angle between the water baffle and the normal direction of the first installation surface is ɑ, 5°≤ɑ≤15°.

Optionally, the gap between the installation cavity and the heat dissipation pipe is filled with a heat dissipation layer.

According to the electric control box of the present invention, the fixing frame is made of metal material, and the side of the fixing frame away from the radiator abuts against the box body.

The air conditioner inner unit according to the present invention is used in an air conditioner, and the air conditioner also includes an air conditioner outer unit, including: the electric control box mentioned above.

According to the air-conditioning inner unit of the present invention, the temperature of the heat-absorbing part can be lowered through the cooling liquid in the heat-absorbing part, and then the cooling radiation is transferred to the radiator through direct contact, and then transferred to the electric control component through the radiator, and at the same time Since the heat absorbing part is arranged in the installation cavity, and the radiator and the fixing frame are attached to the heat absorbing part respectively, the contact between the air and the heat absorbing part is reduced, and the generation of condensed water can be effectively reduced.

Optionally, the air conditioner internal unit also includes: a heat absorbing part of the cooling system, the cooling system also includes a heat releasing part and a cooling circulation flow path connected between the heat absorbing part and the heat releasing part, and the heat releasing part is arranged on the air conditioner external unit Among them, the heat absorbing part is arranged in the installation cavity of the electric control box, and the heat absorbing part defines a cooling channel for the cooling liquid to flow through.

Optionally, the inner unit of the air conditioner includes a first heat exchanger, the outer unit of the air conditioner includes a compressor, one end of the heat absorbing part communicates with the inlet end of the first heat exchanger, and the other end of the heat absorbing part is used to communicate with the inlet end of the compressor. Port-to-port connection.

Optionally, the heat absorbing part includes at least one heat dissipation pipe, and the heat dissipation pipe is fixed on the fixing frame through a pipe clip, and the pipe clip is located between the installation cavity and the relief opening.

Optionally, the inner unit of the air conditioner further includes a casing, which defines an accommodating chamber, in which a fan, a first heat exchanger, and an electric control box are arranged, and a drain port is provided on the bottom wall of the casing, and the casing also defines a The drainage channel is connected with the relief port and the drainage port.

Optionally, a reactor box is further provided in the accommodating cavity, and the reactor box is arranged between the bottom wall and the electric control box, and the reactor box abuts against the electric control box and the bottom wall respectively.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description serve to explain the principles of the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, In other words, other drawings can also be obtained from these drawings without paying creative labor.

Fig. 1 is a sectional view of an air conditioner internal unit according to an embodiment of the present invention;

Fig. 2 is the enlarged view of place A in Fig. 1;

Fig. 3 is an exploded view of an electric control box according to an embodiment of the present invention;

4 is a perspective view of an electric control box including a fixing frame according to an embodiment of the present invention;

Fig. 5 is a perspective view including a bracket of an electric control box according to an embodiment of the present invention;

Fig. 6 is another sectional view of the air conditioner inner unit according to the embodiment of the present invention.

Reference signs:

Air conditioner internal unit 1,

Electric control box 10, box body 11, electric control assembly 12, main control board 122, power module 1222, bracket 124, relief opening 1244, water baffle 1246, limit boss 1248, second deflector 1249, heat dissipation Device 13, first groove 132, first protrusion 134, fixed frame 14, relief port 142, first deflector 143, second groove 146, second protrusion 148, rib 149,

Heat absorption part 20 , heat dissipation pipe 21 , pipe clamp 22 , casing 30 , drain port 31 , reactor box 40 , fan 50 .

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.

As shown in FIGS. 1-3 , the electric control box 10 according to the embodiment of the present invention includes a box body 11 , an electric control assembly 12 , a radiator 13 and a fixing frame 14 .

Specifically, the box body 11 defines an accommodating chamber, in which an electric control component 12, a radiator 13, and a fixing frame 14 are arranged, and the radiator 13 and the fixing frame 14 are stacked and connected to define an installation chamber together, and the installation chamber is used for To fix the heat absorbing part 20, the radiator 13 and the fixing frame 14 are attached to the heat absorbing part 20 respectively. The fixing frame 14 is made of metal material, and the heat absorbing part 20 defines a cooling channel for the cooling liquid to flow through. .

To expand, the electric control assembly 12 includes a main control board 122. When the electric control assembly 12 is used in an air conditioner, the electric control assembly 12 is used to control the air conditioner, the box body 11 is used to protect the electric control assembly 12, and the radiator 13 It is used to dissipate heat from the drive module, main control board 122, electrical components, etc. in the electronic control assembly 12. The heat sink 13 conducts heat conduction through contact with the heat absorption part 20, and transfers the cooling capacity of the heat absorption part 20 to the electric control assembly 12. , improving the heat dissipation efficiency of the electric control box 10 . At the same time, since the heat absorbing part 20 is arranged in the installation cavity, and the heat sink 13 and the fixing frame 14 are in contact with the heat absorbing part 20 respectively, the contact between the air and the cooling pipe 21 is reduced, and the generation of condensed water can be effectively reduced.

Among them, the fixing frame 14 made of metal material can directly transmit the cold energy to the box body 11, which greatly optimizes the problem that the internal temperature of the electric control box 10 is too high and the service life of components is reduced.

The connection between the radiator 13 and the fixing frame 14 is detachable, and the radiator 13 and the fixing frame 14 are connected by fasteners, wherein the fasteners include but not limited to screws, bolts and pins.

In some embodiments, in order to improve the heat dissipation effect of the radiator 13, the radiator 13 includes a plurality of cooling fins, and the cooling fins are distributed at intervals along the length direction of the installation cavity.

In some embodiments, the heat sink 13 is a parallel flow heat sink 13 , so that the space of the box body 11 can be saved, and the heat dissipation efficiency is high.

Box body 11 comprises upper cover and lower cover, and upper cover and lower cover are usually connected by fastener, and fastener includes but not limited to screw, bolt and pin, and sealing strip can be set between upper cover and lower cover, utilizes sealing The strip realizes the sealed connection between the two, or, also can carry out glue processing between the upper cover and the lower cover, thereby realizes the sealed connection between the upper cover and the lower cover.

According to the electric control box 10 of the embodiment of the present invention, the temperature of the heat-absorbing part 20 can be lowered by the cooling liquid in the heat-absorbing part 20, and then the cold energy radiation is transferred to the radiator 13 through direct contact, and then through the radiator 13 Transferred to the electric control assembly 12, the heat dissipation efficiency of the electric control box 10 is improved, and at the same time, the contact between the air and the heat absorbing part 20 is reduced, which can effectively reduce the generation of condensed water.

According to the electric control box 10 of the embodiment of the present invention, the fixing frame 14 is made of metal material, and the side of the fixing frame 14 away from the radiator 13 abuts against the box body 11 . In this way, the cold energy is transferred through the contact of the heat absorbing part 20 → the fixed frame 14 → the box body 11, so that the fixed frame 14 made of metal can transfer the cold energy to the box body 11, thereby cooling the entire box body 11, the metal material Including but not limited to iron and its alloys, aluminum and its alloys.

In addition, as shown in Figures 1 and 2, in some embodiments, the electronic control assembly 12 is arranged on the side of the radiator 13 away from the fixed frame 14 and arranged side by side with the radiator 13, and the radiator 13 passes through the 20 contacts for heat conduction, transfer the cooling capacity of the heat absorbing part 20 to the electronic control component 12 through contact, and conduct cooling transfer through the contact of the heat absorbing part 20→radiator 13→electric control component 12, the electronic control component 12 and the radiator 13 The abutting arrangement can enhance the heat exchange between the electric control component 12 and the radiator 13, and enhance the heat dissipation effect. When the electric control box 10 is applied to the air conditioner inner unit 1, it can avoid damage to the electric unit due to the vibration of the air conditioner inner unit 1. Control assembly 12 and radiator 13.

As shown in Figures 1 and 2, according to the electric control box 10 of the embodiment of the present invention, the heat absorbing part 20 includes at least one heat dissipation pipe 21, and the mounting cavity is attached to the outer wall of the heat dissipation pipe 21, so that the heat dissipation pipe 21 is in contact with the outer wall of the heat dissipation pipe 21. The sufficient contact between the radiator 13, the radiating pipe 21 and the fixed frame 14 can ensure sufficient heat exchange between the radiator 13 and the radiating pipe 21, and sufficient heat exchange between the radiating pipe 21 and the fixed frame 14 can improve the The heat dissipation efficiency can be improved, and at the same time, the contact between the heat dissipation pipe 21 and the air can be better isolated to prevent the generation of condensed water.

As shown in Figure 2, the heat dissipation pipe 21 includes two, and the side of the radiator 13 facing the heat dissipation pipe 21 presents a wave-like structure matching the outer walls of the two heat dissipation pipes 21, and the heat dissipation fin faces the contour of the heat dissipation pipe 21 Generally, it is composed of alternately arranged first protrusions 134 and first grooves 132, the first grooves 132 correspond to the heat dissipation pipes 21 one by one, the heat dissipation pipes 21 are embedded in the first grooves 132, and the first protrusions 134 are located Between two adjacent first grooves 132 . Of course, there may be more than two heat dissipation pipes 21 , and the side of the heat dissipation fins of the radiator 13 facing the heat dissipation pipes 21 presents a corrugated structure matching the outer walls of the plurality of heat dissipation pipes 21 .

As shown in FIG. 2 , the outline of the fixing frame 14 defining the installation cavity is usually formed by alternately arranged second protrusions 148 and second grooves 146 , the second grooves 146 correspond to the heat dissipation pipes 21 one by one, and the heat dissipation pipes 21 The second protrusion 148 is embedded in the second groove 146 . The second protrusion 148 is disposed between two adjacent second grooves 146 , and the second protrusion 148 abuts against the first protrusion 134 .

In some embodiments, the gap between the installation cavity and the heat dissipation pipe 21 is filled with a heat dissipation layer, which can improve the heat dissipation efficiency, and at the same time, the gap between the installation cavity and the heat dissipation pipe 21 can be sealed as much as possible to discharge the air. , to prevent the generation of condensed water in the installation cavity.

It should be noted that the heat dissipation layer includes but is not limited to a heat dissipation paste layer.

As shown in FIG. 4 , in some embodiments, the fixing frame 14 includes a first mounting surface and a second mounting surface opposite to each other, the first mounting surface faces the side close to the electric control assembly 12, and the radiator 13 is arranged on the first mounting surface. On the surface, the fixed frame 14 is provided with a flange along its circumference, and the flange defines a relief opening 142, which communicates with the external environment of the electric control box 10, and the relief port 142 is used for the cooling pipe 21 to extend out of the mounting frame. 14. A first deflector 143 is also provided on the first installation surface. The first deflector 143 is arranged on one side of the heat dissipation pipe 21 and extends toward the relief port 142 along the direction in which the heat dissipation pipe 21 extends, so as to dissipate heat The condensed water generated outside the tube wall of the tube 21 can converge to the relief port 142 along the first deflector 143, thereby flowing out of the electric control box 10, preventing the condensed water from damaging the electrical components in the electric control assembly 12 .

As shown in Figure 4, the first baffle 143 includes a first sub-baffle and a second sub-baffle, and the heat dissipation pipe 21 includes a first sub-radiation pipe 21 located in the installation cavity and a second sub-radiation pipe 21 located outside the installation cavity. The heat dissipation pipe 21, the first sub-deflector corresponds to the first sub-radiation pipe 21, the first sub-deflector is located below the first sub-deflector, and is used to receive and guide the condensed water to flow to the second sub-deflector, And finally flow to the 142 place of the give way port.

In some embodiments, as shown in FIG. 2 and FIG. 5 , the electric control assembly 12 includes a main control board 122 and a bracket 124, the main control board 122 is arranged on the side of the bracket 124 away from the fixing frame 14, and the bracket 124 faces the fixing bracket One side of 14 is provided with a limiting boss 1248 . The limiting boss 1248 extends from one end of the installation cavity to the other end and extends towards the direction close to the relief opening 142 . The limiting boss 1248 abuts against the box body 11 . In this way, the support 124 and the box body 11 can isolate the condensed water through the cooperation of the limiting boss 1248 , preventing the condensed water from entering the live parts of the main control board 122 .

As shown in FIG. 5 , the side of the bracket 124 facing the fixed frame 14 is also provided with a second deflector 1249 . The relief port 142 is extended, so that the condensed water generated outside the tube wall of the heat dissipation pipe 21 can converge to the relief port 142 along the second deflector 1249, thereby flowing out of the electric control box 10, preventing the condensation water from affecting the electric control box 10. Electrical components and the like in the assembly 12 are damaged.

As shown in Figures 2 and 3, in some embodiments, the main control board 122 includes a power module 1222, the bracket 124 is provided with a relief opening 1244, and the heat sink 13 is embedded in the relief opening 1244, and the heat sink 13 The side facing the main control board 122 is attached to the main control board 122 . That is to say, the heat sink 13 is attached to the protruding power module 1222 on the main control board 122 . In order to prevent the power module 1222 on the main control board 122 from being in contact with the heat sink 13 Also secured by fasteners, such as screws.

Among them, the power module 1222 (Intelligent Power Module, IPM) integrates logic, control, detection and protection circuits inside, which is easy to use, not only reduces the size and development time of the system, but also greatly enhances the reliability of the system.

In some embodiments, the side of the bracket 124 facing the main control board 122 is provided with a water baffle 1246 , the water baffle 1246 is arranged along the circumference of the relief opening 1244 , and part of the power module 1222 is embedded in the relief opening 1244 , the power module 1222 is sealingly connected with the water baffle 1246, the part of the water baffle 1246 above the power module 1222 is inclined towards the direction close to the relief opening 1244, and the clip between the water baffle 1246 and the normal direction of the first installation surface The angle is ɑ, 5°≤ɑ≤15°.

As shown in FIG. 2 , the part of the water baffle 1246 located above the power module 1222 abuts against the power module 1222 of the main control board 122 , wherein the water baffle 1246 and the power module 1222 are sealed and connected by coating waterproof glue, thereby Prevent the condensed water from flowing out along the gap and enter the back of the main control board 122 , so that the condensed water can only gather towards the relief port 142 .

In addition, the water baffle 1246 is inclined toward the direction close to the relief port 1244, so that the condensed water condensed on the water baffle 1246 can be drained away smoothly, instead of focusing on the water baffle 1246, so as to prevent the charging element from affecting the main control board 122. device. Among them, ɑ can be 5°, 8°, 11°, 13° and 15°, etc.

In some embodiments, as shown in FIG. 3 , the main control board 122 is arranged on the side of the bracket 124 away from the fixed frame 14, and ribs 149 are provided along the circumferential direction of the fixed frame 14. The ribs 149 avoid the opening 142, and the bracket Bosses are provided on the 124 corresponding to the positions of the ribs 149, and the ribs 149 abut against the bosses.

Wherein, the ribs 149 protrude from the first installation surface, and the ribs 149 abut against the boss for sealing to prevent flying insects or condensed water from entering. During assembly, the main control board 122 is fixed on the bracket 124 first, and then the bracket 124 is fixed on the box body 11 through fasteners.

As shown in FIG. 1 , the air conditioner inner unit 1 according to the embodiment of the present invention is used in an air conditioner, and the air conditioner also includes an air conditioner outer unit, including the above-mentioned electric control box 10 .

According to the air-conditioning indoor unit 1 of the embodiment of the present invention, the temperature of the heat-absorbing part 20 can be lowered by the coolant in the heat-absorbing part 20, and then the cold energy can be radiated to the radiator 13 through direct contact, and then passed through the radiator 13 Transferred to the electric control component 12, the heat dissipation efficiency of the electric control box 10 is improved. At the same time, because the heat absorbing part 20 is arranged in the installation cavity, and the radiator 13 and the fixing frame 14 are in contact with the heat absorbing part 20 respectively, the air and heat dissipation are reduced. The contact between the heat absorbing parts 20 can effectively reduce the generation of condensed water, thereby improving the safety of the operation of the air conditioner indoor unit 1 .

In some embodiments, the air conditioner indoor unit 1 further includes: a heat absorbing part 20 of the cooling system, and the cooling system further includes a heat releasing part and a cooling circulation flow path connected between the heat absorbing part 20 and the heat releasing part, and the heat releasing part The heat absorbing portion 20 is disposed in the installation cavity of the electric control box 10 , and defines a cooling channel for cooling liquid to flow through.

According to the air-conditioning inner unit 1 of the embodiment of the present invention, the cooling system is an independent cooling system. During operation, part of the refrigerant in the first heat exchanger will not be separated, and there is no need to reduce the frequency, that is, sacrifice the energy efficiency of the air-conditioning inner unit 1 To realize the reliability of the operation of the air-conditioning indoor unit 1 . At the same time, when the air conditioner is heating, it can also operate independently to cool down the temperature of the electric control box 10 .

In some embodiments, the air conditioner indoor unit 1 includes a first heat exchanger, the air conditioner outer unit includes a compressor, one end of the heat absorption part 20 communicates with the inlet end of the first heat exchanger, and the other end of the heat absorption part 20 is used for It communicates with the relief port 142 of the compressor.

According to the air-conditioning indoor unit 1 of the embodiment of the present invention, the use of the pump body can be reduced, and the electric control box 10 can be cooled by dividing part of the refrigerant of the first heat exchanger into the electric control box 10, which can simplify the structure setting.

In some embodiments, as shown in FIG. 3 and FIG. 4 , the heat absorbing part 20 includes at least one heat dissipation pipe 21, and the heat dissipation pipe 21 is fixed on the fixing frame 14 through a pipe clamp 22, and the pipe clamp 22 is located in the installation cavity and Between mouth 142. The pipe clamp 22 can further fix the heat dissipation pipe 21 on the fixing frame 14 to prevent the heat dissipation pipe 21 from colliding and being worn during transportation and use.

In some embodiments, as shown in FIG. 6 , the air conditioner indoor unit 1 further includes a casing 30, which defines an accommodating cavity, and a fan 50, a first heat exchanger, and an electric control box 10 are arranged in the accommodating cavity, and the casing A drain port 31 is provided on the bottom wall of the housing 30 , and the housing 30 also defines a drain channel, which communicates with the relief port 142 and the drain port 31 . In this way, the condensed water generated in the electric control box 10 can flow through the drainage passage along the relief opening 142 until it flows out of the air conditioner interior unit 1 through the drainage opening 31 .

In some embodiments, a reactor box 40 is also provided in the accommodating cavity, and the reactor box 40 is arranged between the bottom wall and the electric control box 10, and the reactor box 40 abuts against the electric control box 10 and the bottom wall respectively. .

In this way, by setting the reactor box 40 in direct contact with the bottom wall, the electric control box 10 can be supported, the supporting parts of the air conditioner inner unit 1 are reduced, the overall weight of the air conditioner is reduced, and the assembly time can be reduced during assembly. The hand-holding action at the right time facilitates assembly and improves efficiency. In addition, the electric control box 10 and the outer casing 30 are fixed by fasteners, which can be used as the frame of the whole machine to support parts such as the first heat exchanger and panel components, avoiding the instability caused by the top-heavy inner unit 1 of the air conditioner, and improving the overall performance. machine reliability.

The air conditioner according to the present invention includes an air conditioner external unit and the aforementioned air conditioner internal unit 1 , and the air conditioner internal unit 1 and the air conditioner external unit share an electric control box 10 . Wherein, the air conditioner inner unit 1 and the air conditioner outer unit form a refrigeration circuit, and the refrigeration circuit includes a compressor, a first heat exchanger, a throttle and a second heat exchanger arranged in series in sequence. During cooling, the refrigerant flowing into the heat absorbing part 20 passes through the heat absorbing part 20, the restrictor, the second heat exchanger and the compressor in sequence; or the refrigerant flowing into the heat absorbing part 20 passes through the heat absorbing part 20, the first heat exchanger, Heater, throttling device, second heat exchanger and compressor, and then enter the heat absorbing part 20.

In describing the present invention, it should be understood that the terms "upper", "lower", "left", "right", "inner", "outer", "axial", "radial", "circumferential" ” and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, with a specific configuration and operation, and therefore should not be construed as limiting the invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

In the description of this specification, references to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" are intended to mean that the implementation A specific feature, structure, material, or characteristic described by an embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Claims (15)

1. An electric control box, characterized in that, comprising: A box body, the box body defines an accommodating cavity, and a radiator and a fixing frame are arranged in the accommodating cavity, and the radiator and the fixing frame are stacked and connected to jointly define an installation cavity, and the installation cavity is used for For fixing the heat absorbing part, the heat sink and the fixing frame are attached to the heat absorbing part respectively, and the heat absorbing part defines a cooling channel for cooling liquid to flow through. 2. The electric control box according to claim 1, further comprising an electric control assembly, the electric control assembly is arranged on the side of the heat sink away from the fixing frame and is arranged side by side with the heat sink The abutting arrangement, and/or the heat absorbing portion includes at least one heat dissipation pipe. 3. The electric control box according to claim 2, wherein the fixing frame includes a first mounting surface and a second mounting surface opposite to each other, and the first mounting surface faces a side close to the electric control assembly , the heat sink is arranged on the first installation surface, and the fixed frame is provided with a flange along its circumference, and the flange defines a relief opening, and the relief opening is connected with the external environment of the electric control box communicated, the relief port is used for the heat pipe to protrude from the fixing frame, the first mounting surface is also provided with a first deflector, and the first deflector is arranged on the heat pipe One side of the heat pipe extends toward the relief opening along the extending direction of the heat dissipation pipe. 4. The electric control box according to claim 3, wherein the electric control assembly includes a main control board and a bracket, the main control board is arranged on a side of the bracket away from the fixing frame, the The side of the bracket facing the fixed frame is provided with a limit boss, and the limit boss extends from one end of the installation cavity to the other end and extends toward the direction close to the relief opening, and the limit boss The stage abuts against the box body. 5. The electric control box according to claim 4, wherein a relief opening is provided on the bracket, the radiator is embedded in the relief opening, and the heat sink faces the main One side of the control board is attached to the main control board. 6. The electric control box according to claim 5, wherein the main control board includes a power module, and the side of the bracket facing the main control board is provided with a water baffle, and the water baffle is along the Circumferential arrangement of the relief opening, part of the power module is embedded in the relief opening, and the power module is sealingly connected with the water baffle. 7. The electric control box according to claim 6, wherein the part of the water baffle located above the power module is inclined towards the direction close to the relief opening, and the water baffle and the water baffle are The included angle between the normal direction of the first installation surface is ɑ, 5°≤ɑ≤15°. 8 . The electric control box according to claim 3 , wherein a gap between the installation cavity and the heat dissipation pipe is filled with a heat dissipation layer. 9 . The electric control box according to claim 1 , wherein the fixing frame is made of metal material, and a side of the fixing frame away from the radiator abuts against the box body. 10. An air conditioner internal unit, used in an air conditioner, the air conditioner also includes an air conditioner external unit, characterized in that it comprises: the electric control box according to any one of claims 1-9. 11. The air conditioner indoor unit according to claim 10, further comprising: The heat absorbing part of the cooling system, the cooling system also includes a heat releasing part and a cooling circulation flow path connected between the heat absorbing part and the heat releasing part, the heat releasing part is arranged on the air conditioner external unit Among them, the heat absorbing part is arranged in the installation cavity of the electric control box. 12. The air conditioner indoor unit according to claim 10, characterized in that, the air conditioner inner unit includes a first heat exchanger, the air conditioner outer unit includes a compressor, and one end of the heat absorbing part is connected to the first heat exchanger. The inlet end of the heat exchanger is connected, and the other end of the heat absorbing part is used to communicate with the relief port of the compressor. 13. The air conditioner indoor unit according to any one of claims 10-12, characterized in that, the heat absorbing part includes at least one heat dissipation pipe, and the heat dissipation pipe is fixed on the fixing frame by a pipe clamp, and the heat dissipation pipe The clip is located between the installation cavity and the relief opening. 14. The air-conditioning inner unit according to any one of claims 10-12, characterized in that it further comprises a casing, the casing defines an accommodating cavity, and a fan, a first heat exchanger are arranged in the accommodating cavity As for the electric control box, a drain port is provided on the bottom wall of the housing, and the housing further defines a drain channel, and the drain channel communicates with the relief port and the drain port. 15. The air conditioner inner unit according to claim 14, wherein a reactor box is further provided in the accommodating cavity, and the reactor box is arranged between the bottom wall and the electric control box, And the reactor box abuts against the electric control box and the bottom wall respectively.

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