CN220321449U - Air conditioner indoor unit - Google Patents

Abstract

The utility model belongs to the technical field of air conditioners, and particularly discloses an air conditioner indoor unit. The device comprises a machine body, a fan, a heat exchange device and an electric control component, wherein the machine body is provided with a containing cavity, an air inlet and an air outlet, the air inlet and the air outlet are communicated with the containing cavity, the containing cavity comprises a negative pressure area and a mounting area, the negative pressure area and the mounting area are arranged side by side and are communicated, the fan and the heat exchange device are arranged in the negative pressure area, the electric control component is arranged in the mounting area, and the mounting area is communicated with the air inlet and the negative pressure area; the electric control assembly comprises an electric control box, an electric control plate, a high-frequency inductor and a radiator, wherein the electric control plate is arranged inside the electric control box, the high-frequency inductor is electrically connected to the electric control plate and extends out of the electric control box, a first end of the radiator is arranged outside the electric control plate, a second end of the radiator extends out of the electric control box, and the radiator is located on one side of the electric control plate facing the negative pressure area. The air conditioner indoor unit disclosed by the utility model can improve the heat radiation performance of the electric control assembly and improve the electrical safety of the electric control assembly and the air conditioner indoor unit.

Description

Air conditioner indoor unit

Technical Field

The utility model relates to the technical field of air conditioners, in particular to an air conditioner indoor unit.

Background

With the development of society and the improvement of living standard of people, an air conditioner with refrigerating and heating functions is an indispensable household electrical appliance for daily household life. Among them, the wall-mounted air conditioner is widely used because of its convenience in installation.

Wall-mounted air conditioners generally include an air conditioner indoor unit and an air conditioner outdoor unit. The existing air conditioner indoor unit generally comprises a machine body, a fan, a refrigerating device, a heating device, an electric control assembly and the like, wherein the fan, the refrigerating device, the heating device and the electric control assembly are arranged in the machine body, the machine body is provided with a containing cavity, an air inlet and an air outlet, the air inlet and the air outlet are communicated with the containing cavity, the fan is operated to drive indoor air to enter the containing cavity from the air inlet, then the indoor air is cooled by the refrigerating device or heated by the heating device, and then flows out from the air outlet, so that the indoor temperature is regulated. The electric control assembly comprises a control box and a control device arranged in the control box, wherein the control device is used for controlling the operation of the fan, the refrigerating device or the heating device and the like.

In the running process of the air conditioner, a large amount of heat can be generated by the control device in the electric control box, and the heat dissipation effect of the electric control component in the prior art is poor, so that the control device cannot effectively dissipate heat, the temperature of the control device in the electric control box is increased, and the running of the air conditioner is affected.

Disclosure of Invention

The utility model aims to provide an air conditioner indoor unit, which is used for improving the heat dissipation performance of an electric control component in the air conditioner indoor unit and improving the use safety and reliability of the air conditioner indoor unit.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the air conditioner indoor unit comprises a machine body, a fan, a heat exchange device and an electric control assembly, wherein the machine body is provided with a containing cavity, an air inlet and an air outlet, the air inlet and the air outlet are communicated with the containing cavity, the containing cavity comprises a negative pressure area and a mounting area, the negative pressure area is communicated with the containing cavity, the fan and the heat exchange device are mounted in the negative pressure area, the electric control assembly is mounted in the mounting area, and the mounting area is communicated with the air inlet and the negative pressure area;

the electric control assembly comprises an electric control box, an electric control plate, a high-frequency inductor and a radiator, wherein the electric control plate is arranged inside the electric control box, the high-frequency inductor is electrically connected to the electric control plate and stretches out of the outer side of the electric control box, a first end of the radiator is arranged on the electric control plate, a second end of the radiator stretches out of the electric control box, and the radiator is located on one side of the electric control plate, which faces the negative pressure area.

The utility model has the beneficial effects that:

according to the air conditioner indoor unit provided by the utility model, the electric control board is arranged in the electric control box, so that dust prevention, water prevention and insect prevention protection on the electric control board can be realized, control faults caused by biting of locust, cockroach and the like on the electric control board are avoided, and the use safety and convenience of the electric control assembly are improved; the high-frequency inductor and the radiator extend out of the electric control box, so that the high-frequency inductor and the radiator are exposed in the installation area, when the fan operates, air flows enter the installation area through the air inlet, heat dissipated on the high-frequency inductor and the radiator can be effectively taken away to the negative pressure area, the heat dissipation performance of the high-frequency inductor and the radiator is improved, the heat dissipation performance of the electric control box is improved through the radiator, the heat dissipation performance of the electric control box is improved, the heat accumulation of the electric control box is avoided, the high temperature is generated, the effective protection of a control device is realized, and the use safety and the reliability of an electric control assembly and an air conditioner inner unit are improved.

As an optional technical scheme of the air conditioner indoor unit, the radiator is provided with a plurality of radiating channels which are arranged side by side, the radiating channels are arranged in a vertically penetrating way, and the radiator is positioned between the air inlet and the high-frequency inductor;

and/or the projection of the radiator and the high-frequency inductor on the horizontal plane is positioned in the projection range of the electric control box on the horizontal plane.

As an optional technical scheme of air conditioner internal unit, automatically controlled box utensil installation cavity, automatically controlled board install in the installation cavity, the cavity end of installation cavity is protruding to be equipped with keeps apart box portion, keep apart box portion along orientation automatically controlled board extends, automatically controlled box has link up keep apart box portion with the inductance mouth at installation cavity end, the high frequency inductance passes through the inductance is worn the mouth and is worn out automatically controlled box.

As an alternative technical scheme of the air conditioner indoor unit, the electric device on the electric control board is arranged on one side of the electric control board facing the negative pressure area;

and/or the electric control board is provided with a high-heat-generation electric device, the high-heat-generation electric device comprises an IPM module, an ICGT module, a diode module and/or a rectifier bridge module, and the first end of the radiator is attached to the high-heat-generation electric device.

As an optional technical scheme of the air conditioner indoor unit, one side of the electric control box facing the negative pressure area is provided with a step surface, the step surface comprises a first step surface and a second step surface which are arranged in a step mode, the distance between the first step surface and the negative pressure area is smaller than that between the second step surface and the negative pressure area, the second step surface is located between the air inlet and the first step surface, and the radiator penetrates out of the second step surface.

As an optional technical scheme of the air conditioner indoor unit, the step surface further comprises an intermediate step surface located between the first step surface and the second step surface, and the high-frequency inductor penetrates out of the intermediate step surface.

As an optional technical scheme of the air conditioner indoor unit, the air inlet comprises an auxiliary air inlet arranged at the top of the installation area, and a cooling fan is further arranged in the installation area and used for guiding external air flow to enter the installation area through the auxiliary air inlet.

As an alternative technical scheme of the air conditioner indoor unit, the cooling fan is positioned between the auxiliary air inlet and the radiator, the inlet end of the cooling fan is opposite to the auxiliary air inlet, and the air outlet end of the cooling fan is opposite to the radiator.

As an alternative technical scheme of the air conditioner indoor unit, the electric control box comprises a box body and a fan bracket arranged at the upper end of the box body, the electric control plate is arranged in the box body, and the cooling fan is detachably arranged on the fan bracket.

As an optional technical scheme of air conditioner internal unit, the fan support includes support frame portion, support frame portion's one end with the box body is connected, support frame portion's the other end is followed towards the direction of negative pressure district extends, support frame portion interval sets up the top of radiator, radiator fan install in support frame portion, support frame portion just has seted up the vent to radiator fan's air-out end link up.

As an optional technical scheme of the air conditioner indoor unit, a positioning part is convexly arranged at the top end of the supporting frame part, a plurality of positioning parts are arranged around the ventilation opening, and each side of the cooling fan is abutted with at least one positioning part;

and/or, the top end of the supporting frame part is convexly provided with a plurality of boss parts, the boss parts are arranged around the ventilation opening, the cooling fan is supported on the boss parts, and the cooling fan is connected with the fan bracket through connecting screw members penetrating through the cooling fan and the boss parts;

and/or the support frame part comprises a support top plate part and a connecting plate part vertically connected to the lower part of one side of the support top plate part, the lower end of the connecting plate part is connected with the upper end of the box body, and the support top plate part is provided with the ventilation opening.

As an optional technical scheme of air conditioner inner unit, automatically controlled box includes box body and lid, the box body has the opening to deviate from the mounting groove of negative pressure district, the lid is established the opening of mounting groove and with the box body can dismantle the connection, automatically controlled board can dismantle install in the box body.

Drawings

Fig. 1 is a schematic diagram of a split structure of an air conditioner indoor unit according to an embodiment of the present utility model;

fig. 2 is a schematic view of a part of the structure of an air conditioner indoor unit according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of the structure at I in FIG. 2;

FIG. 4 is a schematic diagram of an electrical control assembly according to an embodiment of the present utility model;

fig. 5 is a schematic diagram of a split structure of an electronic control unit according to an embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a case according to an embodiment of the present utility model.

The figures are labeled as follows:

100. an electrical control assembly; 200. a body; 201. a base; 202. a housing; 203. a face shell; 204. a negative pressure region; 205. an installation area; 206. an air inlet; 2061. a main air inlet; 2062. an auxiliary air inlet; 207. an air outlet;

1. an electric control box; 11. a case body; 111. a box main body; 1111. a first step surface; 1112. a second step surface; 1113. a middle step surface; 1114. a heat dissipation through hole; 1115. an inductor through hole; 1116. a threading opening; 112. installing a convex column; 113. a clamping protrusion; 114. a stud portion; 115. a wire part; 116. an isolation box portion; 117. isolation ribs; 12. a cover body; 121. a cover plate portion; 122. a coaming part; 1221. a bayonet; 123. mounting the ear; 13. a fan bracket; 131. a supporting top plate portion; 1311. a vent; 132. a connection plate portion; 133. a support side plate portion; 134. a positioning part; 135. a boss portion; 136. a reinforcing rib portion; 14. a wire clamp seat; 141. a first seat; 142. a second seat;

2. a control device; 21. an electric control board; 22. a high frequency inductance; 23. an IPM module; 24. an ICGT module; 25. a diode module; 26. a rectifier bridge module; 27. a connection terminal;

3. a heat sink; 31. a heat dissipation base plate; 32. a heat radiation fin;

4. a heat radiation fan; 5. and (5) wire clamping.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The present embodiment provides an air conditioner indoor unit as a part of an air conditioning system to achieve cooling or heating of an indoor environment and to adjust an indoor air temperature. The air conditioner indoor unit provided by the embodiment is a wall-mounted air conditioner indoor unit.

As shown in fig. 1 and 2, the air conditioner indoor unit includes a body 200, a blower fan, a heat exchanging apparatus, and an electronic control assembly 100. The machine body 200 has a receiving cavity, and an air inlet 206 and an air outlet 207 that are communicated with the receiving cavity. The accommodating cavity is provided with a negative pressure area 204 and a mounting area 205 which are communicated with each other, the fan and the heat exchange device are arranged in the negative pressure area 204, the electric control assembly 100 is arranged in the mounting area 205, and the mounting area 205 is communicated with the air inlet 206 and the negative pressure area 204. After the fan is started, negative pressure is formed in the negative pressure area 204, so that indoor air can enter the accommodating cavity from the air inlet 206, then the air flow is cooled or heated by the heat exchange device and then is discharged from the air outlet 207, and the refrigerating or heating function of the air conditioner is realized.

The body 200 includes a base 201, a housing 202, and a face-piece 203 that are detachably connected. The shell 202 is buckled and connected to the front side of the base 201, the shell 202 and the base 201 are surrounded to form the containing cavity, and the fan and the heat exchange device are both arranged on the shell 202; the face housing 203 is disposed on the front side of the housing 202 to form a front appearance surface of the machine body 200, thereby improving appearance aesthetic property and cleaning convenience.

The grid-shaped air inlets 206 are formed in the top ends of the base 201 and the shell 202, and the air inlets 206 cover the negative pressure area 204 and the installation area 205, so that most of indoor air enters the negative pressure area 204 from the air inlets 206 under the action of a fan, and the other part enters the negative pressure area 204 from the air inlets 206 and the installation area 205 sequentially. That is, in this embodiment, the intake vent 206 includes a primary intake vent 2061 that communicates with the negative pressure region 204 and a secondary intake vent 2062 that communicates with the mounting region 205.

The air inlet 206 is detachably provided with a filter screen to prevent mosquitoes, ash layers and the like from entering the accommodating cavity, so that the use safety of the air conditioner indoor unit is improved. The filter screen may be welded, detachably connected or integrally formed with the body 200.

The heat exchange device comprises a condenser and a heating device, wherein the condenser is used for performing condensation heat exchange on the hot air entering the negative pressure zone 204 so as to cool the hot air to form cold air; the heating device is used to heat the air entering the negative pressure zone 204 to raise the indoor temperature.

It should be noted that, the specific structure of the machine body 200, the structure of the fan and the heat exchange device, the installation of the fan and the heat exchange device in the machine body 200, and the arrangement of the main air inlet 2061 and the air outlet 207 on the machine body 200 may be all set according to the prior art, which is not the focus of the present utility model and will not be repeated herein.

As shown in fig. 2 and 3, the electronic control assembly 100 includes an electronic control box 1, a control device 2, and a heat sink 3, the control device 2 includes an electronic control board 21 and a plurality of electric devices provided on the electronic control board 21, the electric devices including a high-frequency inductor 22. Wherein, the electric control box 1 is provided with an installation cavity, and the electric control plate 21 is installed in the installation cavity; the high-frequency inductor 22 is electrically connected to the electric control board 21 and extends out of the electric control box 1; the first end of the radiator 3 is connected to the electric control board 21, and the second end of the radiator 3 extends out of the electric control box 1.

According to the air conditioner indoor unit provided by the embodiment, the electric control board 21 is arranged in the electric control box 1, so that dust prevention, water prevention and insect prevention protection on the electric control board 21 can be realized, control faults caused by biting of locust, cockroach and the like on the electric control board 21 are avoided, and the use safety and convenience of the electric control assembly 100 are improved; the high-frequency inductor 22 and the radiator 3 extend out of the electric control box 1, so that the high-frequency inductor 22 and the radiator 3 are exposed out of the installation area 205, when the fan operates, airflow enters the installation area 205 through the auxiliary air inlet 2062, heat radiating on the high-frequency inductor 22 and the radiator 3 can be effectively taken away into the negative pressure area 204, the heat radiating performance of the high-frequency inductor 22 and the radiator 3 is improved, the heat radiating inside the electric control box 1 is improved through the radiator 3, the heat radiating performance inside the electric control box 1 is improved, high temperature generated by heat accumulation inside the electric control box 1 is avoided, effective protection of the control device 2 is realized, and therefore the use safety and reliability of the electric control assembly 100 and an air conditioner are improved.

As shown in fig. 3 to 6, in the present embodiment, the heat sink 3 has a plurality of heat dissipation channels arranged side by side, the heat dissipation channels are arranged vertically through, and the heat sink 3 is located between the air inlet 206 and the high-frequency inductor 22. Thereby ensuring that the air flow entering from the auxiliary air inlet 2062 can flow to the high-frequency inductor 22 through the heat dissipation channel of the radiator 3, and being more beneficial to taking away the heat at the high-frequency inductor 22. Meanwhile, as the radiator 3 and the high-frequency inductor 22 are sequentially arranged in the vertical direction, the size of the whole electric control assembly 100 in the front-rear direction is reduced, the overall structural compactness of the electric control assembly 100 is improved, the occupied space of the electric control assembly 100 is reduced, and the layout rationality of the electric control assembly 100 in the installation area 205 is improved.

The electric control box 1 comprises a box body 11 and a cover body 12 which are detachably connected, wherein the box body 11 is provided with a mounting groove with one end open, and the cover body 12 seals the notch of the mounting groove and surrounds the groove wall of the mounting groove to form the mounting cavity. An electric control board 21 is mounted on the case 11. The cover 12 is preferably located at one side of the box 11 far away from the negative pressure area 204, so that the cover 12 is arranged near one end of the machine body 200, which is more beneficial to the maintenance and replacement of the control device 2 in the electronic control box 1 and improves the use safety of the electronic control assembly 100.

The electric control plate 21 is preferably arranged vertically and is perpendicular to the length direction of the machine body 200, and the electric device is preferably arranged on one side of the electric control plate 21 away from the cover body 12, so that the heat radiated by the control device 2 is directed to the bottom of the box body 11, and the bottom of the box body 11 is closer to the negative pressure area 204, thereby being more beneficial to the heat radiation of the control device 2; meanwhile, the arrangement mode of the electric control plate 21 can save the occupied space of the electric control plate 21 in the length direction of the machine body 200 and improve the rationality of the space layout.

In order to improve the convenience of mounting the electronic control board 21, the bottom of the case 11 is convexly provided with a plurality of mounting bosses 112 along the direction towards the cover 12, the mounting bosses 112 are preferably disposed at corners of the case 11, and end surfaces of the mounting bosses 112 form supporting surfaces for supporting the electronic control board 21. The mounting boss 112 is provided with a threaded hole. The electric control board 21 is supported on the mounting convex column 112, and the electric control board 21 is correspondingly provided with connecting through holes, the connecting through holes are communicated with the threaded holes in a one-to-one correspondence manner, and the electric control board 21 and the box 11 are connected through screws penetrating through the connecting through holes and the threaded holes. Thereby, the electric control board 21 is reliably installed inside the box body 11, and the electric control board 21 is arranged at intervals with the bottom of the box body 11, so that space is provided for installation and heat dissipation of the electric devices on the electric control board 21. The electric control plate 21 and the cover body 12 are preferably arranged at intervals, so that heat dissipation of the electric control plate 21 is facilitated, and the circuit on the electric control plate 21 is prevented from being scratched.

The cover body 12 includes a cover plate portion 121 and a coaming portion 122 extending vertically along the periphery of the cover plate portion 121, and at least two opposite sides of the cover plate portion 121 are provided with the coaming portion 122, the cover plate portion 121 is covered at the opening of the mounting groove, and the coaming portion 122 is enclosed outside the box body 11, thereby being capable of further improving the sealing performance of the mounting cavity. One side coaming part 122 is clamped with the box body 11, and the coaming part 122 on the other opposite side is connected with the box body 11 by adopting a screw, so that the convenience in assembling and disassembling the cover body 12 and the box body 11 is improved, and meanwhile, the connection stability of the box body 11 and the cover body 12 is ensured.

In other embodiments, at least two opposite sides of the cover 12 may be engaged with the case 11, or at least two opposite sides of the cover 12 may be connected to the case 11 through a screw member.

Further, the cover plate 121 is provided with the shroud portions 122 on both upper and lower sides, wherein a bayonet 1221 is provided on one shroud portion 122, and at least two bayonets 1221 are provided at intervals along the length direction of the shroud portion 122. The outer side wall of the box 11 is provided with convex clamping pieces 113 in a convex mode, the convex clamping pieces 113 are arranged in a one-to-one correspondence with the bayonets 1221, and the convex clamping pieces 113 are clamped in the bayonets 1221. The other coaming portion 122 is provided with an installing lug 123 outwards in a protruding mode, the installing lug 123 is provided with two installing lugs along the length direction of the corresponding coaming portion 122 at intervals, the corresponding side wall of the box body 11 is provided with stud portions 114 in a protruding mode, the stud portions 114 and the installing lug 123 are arranged in a one-to-one correspondence mode, and a threaded piece penetrates through the installing lug 123 and the stud portions 114 to connect the cover body 12 and the box body 11.

The case 11 preferably includes a first case portion and a second case portion, the open end faces of which are flush, the depth of the first case portion being greater than the depth of the second case portion, and the high-frequency inductor 22 and the radiator 3 penetrating out of the bottom of the second case portion. This kind of setting makes box body 11 deviate from the one side of lid 12 and is the echelonment setting, when being favorable to automatically controlled box 1 to satisfy the installation space of the electric device on the automatically controlled board 21, for the installation of high frequency inductance 22 and radiator 3 provides installation space, improves compactibility, reduces the whole occupation of land space of automatically controlled subassembly 100.

In this embodiment, the first box portion forms the first step surface 1111 on the side facing the negative pressure area 204, the second box portion forms the second step surface 1112 and the middle step surface 1113 on the side facing the negative pressure area 204, the distance between the first step surface 1111, the middle step surface 1113 and the second step surface 1112 and the negative pressure area 204 is gradually increased, the second step surface 1112 is provided with a heat dissipation through hole 1114, the middle step surface 1113 is provided with an inductance through hole 1115, the high-frequency inductance 22 passes through the inductance through hole 1115 and passes through the middle step surface 1113, and the radiator 3 passes through the heat dissipation through hole 1114 and passes through the second step surface 1112.

In other embodiments, the step surface may include only the first step surface 1111 and the second step surface 1112, and the radiator 3 and the high-frequency inductor 22 may pass through the second step surface 1112.

The box body 11 of second box portion is protruding to be equipped with keeps apart box portion 116, and inductance through hole 1115 link up keeps apart box portion 116, keeps apart the setting of box portion 116, is favorable to keeping apart high frequency inductance 22 and other electrical components on the automatically controlled board 21, reduces the quantity that heat on the high frequency inductance 22 transferred to other electrical components, further improves the heat dispersion of control device 2. Further, the isolation box 116 is provided with isolation ribs 117 protruding from opposite sides, and the isolation ribs 117 can enhance the structural strength and rigidity of the isolation box 116, and can prevent heat transfer caused by direct contact between the high-frequency inductor 22 and the isolation box 116.

The projection of the radiator 3 and the high-frequency inductor 22 on the horizontal plane are preferably located in the projection range of the electric control box 1 on the horizontal plane, so that the structural compactness of the whole electric control assembly 100 is reduced, and the occupied space is reduced.

In this embodiment, the electric control board 21 integrates the inner board and the outer board of the air conditioner, and the electric devices on the electric control board 21 include functional modules such as a power supply unit, an outdoor fan driving unit, an outdoor press driving unit, etc., so that the outer machine electric control assembly 100 can be omitted, the cost can be reduced, and the installation convenience can be improved. The electric devices with higher heights on the electric control board 21 are installed in the corresponding areas of the first box part, so that enough space is provided for the installation of the high-voltage electric devices, and the height of the whole electric control box 1 is reduced.

The high heat-generating electric device on the electric control board 21 is preferably arranged opposite to the radiator 3, and the radiator 3 is pressed on the high heat-generating electric device, so that the electric device with larger heat generation amount can be radiated more conveniently. In the present embodiment, the high heat generating electric device includes whether or not the IPM plus (english full name, chinese name) is the better module 23, the IGBT plus (english full name, chinese name) is the better module, the diode module 25, the rectifier bridge module 26, and the like.

The radiator 3 includes a heat radiation bottom plate 31 and heat radiation fins 32 vertically arranged on the heat radiation bottom plate 31, the heat radiation fins 32 are arranged side by side and at intervals, and a heat radiation channel is formed between two adjacent heat radiation fins 32. The heat dissipation bottom plate 31 stretches into the electric control box 1 and is pressed on the high-heat-generation electric device, the box body 11 of the second box part is provided with a heat dissipation through hole 1114, and the heat dissipation fins 32 stretch out of the electric control box 1 through the heat dissipation through hole 1114.

The side of the heat-dissipating bottom plate 31 facing away from the heat-dissipating fins 32 is preferably provided with a heat-conducting structure, which is directly in contact with the high-heat-generating electric device, so as to enhance the efficiency of heat conduction, thereby enhancing the heat dissipation effect on the electric control plate 21 and the electric device thereon. The heat conducting structure may be a metal heat conducting sheet, such as an indium sheet, or a heat conducting coating coated on the heat dissipating substrate 31. The radiating bottom plate 31 and the radiating fins 32 are made of aluminum metal materials, so that the weight is light, and the radiating effect is good. In other embodiments, the heat sink 3 may be made of other materials, not limited to the present embodiment.

Further, the electronic control assembly 100 further includes a cooling fan 4, where the cooling fan 4 is configured to guide an external airflow into the mounting area 205 through the auxiliary air inlet 2062, so as to enhance the magnitude of the cooling airflow, thereby further improving the cooling effect of the control device 2. Preferably, the cooling fan 4 is located between the auxiliary air inlet 2062 and the radiator 3, the air inlet 206 of the cooling fan 4 is opposite to the auxiliary air inlet 2062, the air outlet 207 of the cooling fan 4 is opposite to the radiator 3, and the cooling fan 4 is used for guiding external air into the installation area 205 through the auxiliary air inlet 2062.

That is, in this embodiment, the cooling fan 4, the radiator 3 and the high-frequency inductor 22 are sequentially disposed from top to bottom, when the fan is running, the cooling fan 4 is running synchronously, so that the external air flow enters the installation area 205 through the auxiliary air inlet 2062, and after flowing through the radiator 3 and the high-frequency inductor 22 in sequence, enters the negative pressure area 204 under the negative pressure effect of the negative pressure area 204, the hot air flowing into the negative pressure area 204 from the installation area 205 is cooled by condensation of the condenser, and becomes cold air to flow into the indoor environment, so as to realize continuous circulation cooling of the electric control assembly 100, so that the temperature of the electric control assembly 100 is always in an ideal working environment, the electric control assembly 100 is protected from being burnt, and the use safety and reliability of the electric control assembly 100 are improved.

In order to improve the convenience of installing the cooling fan 4 on the electric control box 1, the electric control box 1 further comprises a fan bracket 13, the fan bracket 13 is arranged at the upper end of the electric control box 1, and the cooling fan 4 is detachably installed on the fan bracket 13. The fan bracket 13 is arranged to be beneficial to providing positioning for the installation of the heat dissipation air. In the present embodiment, the fan bracket 13 and the case 11 are integrally formed, so as to simplify the processing and improve the assembly efficiency. In other embodiments, the fan bracket 13 may be welded or detachably connected to the case 11.

The fan bracket 13 includes a support frame portion, one end of which is connected to one end of the case 11, and the other end of which extends in a direction away from the cover 12, and the support frame portion is provided with a ventilation opening 1311 penetrating in a vertical direction. The cooling fan 4 is mounted on the support frame portion, and the air outlet 207 of the cooling fan 4 is opposite to the air vent 1311. The support frame portion is preferably spaced from the radiator 3 so that a space for air flow exists between the support frame portion and the radiator 3, ensuring that air flow flowing out of the radiator fan 4 can act on the respective radiating fins 32 of the radiator 3, and ensuring a radiating effect.

Further, the support frame part is surrounded and formed with a diversion air channel, the ventilation opening 1311 forms an air inlet 206 of the diversion air channel, the upper end of the radiator 3 is aligned with the air outlet 207 of the diversion air channel, and the diversion air channel is beneficial to guiding air flow to the radiating fins 32, enhancing negative pressure generated by suction of the radiating fan 4 and increasing radiating air flow.

The support frame portion includes the supporting roof portion 131 that the level set up, and one side below of supporting roof portion 131 is provided with connecting plate portion 132, and the lower extreme and the box body 11 upper end of connecting plate portion 132 are connected, and supporting roof portion 131 has seted up foretell vent 1311, and radiator fan 4 installs on supporting roof portion 131. Thereby making the support plate part higher than the upper end of the box body 11, and reducing the overall height of the electric control box 1 while facilitating the installation of the cooling fan 4.

The support plate portion is provided with support side plate portions 133 on opposite sides in the front-rear direction, respectively, and the support side plate portions 133 are connected to the connection plate portion 132 and the case 11. The support top plate portion 131, the connection plate portion 132, and the support side plate portion 133 enclose the above-described flow guide passage. The arrangement of the supporting side plate 133 increases the overall structural strength and rigidity of the supporting frame, ensures the supporting stability of the cooling fan 4, and is beneficial to enclosing and forming the diversion air duct.

The distance between the supporting side plate portion 133 and the radiator 3 is preferably gradually reduced in a direction toward the cover 12, and two or more supporting side plate portions 133 on each side of the ventilation opening 1311 are preferably provided at intervals, so as to enhance the overall structural strength and rigidity of the supporting frame portion and improve the supporting performance. Further, a reinforcing rib portion 136 is connected between the connecting plate portion 132 and the side wall of the box body 11, so as to further improve the structural strength and rigidity of the connection portion between the support frame portion and the box body 11, and improve the support performance of the support frame portion.

Further, a plurality of positioning portions 134 are convexly provided on the upper surface of the supporting top plate 131, the positioning portions 134 are disposed around the ventilation opening 1311, a mounting space is formed around the positioning portions 134, the cooling fan 4 is mounted in the mounting space, and each side wall of the cooling fan 4 is abutted with at least one positioning portion 134, so that the positioning portions 134 can provide positioning for the mounting position of the cooling fan 4, and therefore the assembly efficiency and the assembly precision of the cooling fan 4 are improved. In the present embodiment, the positioning portion 134 is a plate structure protruding from the upper surface of the supporting top plate 131, and each plate structure is attached to a corresponding side of the cooling fan 4, so as to simplify the structure of the positioning portion 134 and improve the positioning effect of the positioning portion 134 on the cooling fan 4.

The top end of the supporting top plate 131 is convexly provided with a plurality of boss portions 135, the plurality of boss portions 135 are disposed around the ventilation opening 1311, the cooling fan 4 is supported by the boss portions 135, and the cooling fan 4 and the fan bracket 13 are connected by connecting screws penetrating through the cooling fan 4 and the boss portions 135. The provision of the boss portion 135 can reduce the thickness requirement for the supporting top plate portion 131 while ensuring the mounting stability of the cooling fan 4.

In this embodiment, four boss portions 135 are provided, and the four boss portions 135 are rectangular in distribution and are disposed opposite to four corners of the cooling fan 4, and fastening through holes are formed through the four corners of the cooling fan 4, and the fan bracket 13 is connected with the cooling fan 4 through fastening screws penetrating through the fastening through holes and the threaded holes.

The electric device further comprises a wiring terminal 27 arranged on the electric control board 21, and the wiring terminal 27 is connected with a condenser, a fan, a power supply and the like through connecting wires. The connection terminal 27 is preferably arranged at the rear side of the electric control board 21, the rear side surface of the box body 11 is provided with a threading opening 1116, and a connecting wire connected with the connection terminal 27 penetrates out of the electric control box 1 through the threading opening 1116. Therefore, the wiring convenience can be improved, and the wiring of the connecting wire can be guided more easily; meanwhile, the wiring terminal 27 is arranged at the rear side of the electric control board 21, so that a connecting wire can pass through the base 201 to run, the wiring length is reduced, and the wiring convenience is improved; meanwhile, the connecting wire can be intensively arranged at the rear side of the air conditioner indoor unit, and the disassembly, assembly and maintenance operations of the circuit are facilitated.

For the wiring of guide connecting wire, the rear side of automatically controlled box 1 still is provided with line ball clamp 5, and the connecting wire that draws from threading mouth 1116 extends to fastener department and is fixed by line ball clamp 5, realizes the regularity and the fastening to the connecting wire, avoids the connecting wire to scatter the scattered problem such as being easily pulled or rupture that leads to, improves the wiring security.

In this embodiment, the threading openings 1116 are provided with at least two threading openings 1116, and the two threading openings 1116 are a first threading opening and a second threading opening respectively, the first threading opening is arranged in a strip shape and is opposite to the connecting terminal 27 so as to guide the connecting line of the connecting terminal 27 to be led out, and the second threading opening is arranged close to the cooling fan 4 so as to guide the connecting line of the cooling fan 4 to be led out. Preferably, the back side of the box 11 is further provided with a wire guide 115, a wire guide groove is formed around the wire guide 115 and the outer side wall of the box 11, the wire guide groove is communicated with the first threading opening, and the wire guide groove is used for guiding the wire of part of the connecting wire. In this embodiment, preferably, the crimping clip 5 is disposed near the second threading opening.

In this embodiment, the wire clip 5 is detachably disposed on the back side of the box body 11, so as to improve the replacement convenience of the wire clip 5, and thus, a suitable wire clip 5 can be selected according to the number and positions of the connecting wires. Further, the back side of the box body 11 is provided with a wire clamp seat 14, the wire clamp seat 14 includes a first seat 141 and a second seat 142, the first seat 141 extends along the side of the second box portion in a direction away from the cover body 12, the second seat 142 extends backwards along a direction perpendicular to the box body 11, a positioning convex column is arranged on the first seat 141, and a clamping interface is arranged on the second seat 142. The locating hole has been seted up to the clamp 5, and the locating column inserts and locates in the locating hole, and the one end card of clamp 5 locates in the draw-in interface, simultaneously, the clamp 5 is connected through the screw thread spare of wearing to locate in locating column and the locating hole with the line ball seat, can realize the installation location of clamp 5 on the line ball seat from this, can also improve the dismouting convenience of clamp 5.

It should be understood that the above-mentioned installation structure of the wire clip 5 on the box 11 is merely an exemplary structure, and other existing structures that can implement the installation of the wire clip 5 on the box 11 can be applied to the present utility model. Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims (12)

1. The air conditioner indoor unit comprises a machine body (200), a fan, a heat exchange device and an electric control assembly (100), wherein the machine body (200) is provided with a containing cavity, an air inlet (206) and an air outlet (207) which are communicated with the containing cavity, and the air conditioner indoor unit is characterized in that the containing cavity comprises a negative pressure area (204) and a mounting area (205) which are communicated, the fan and the heat exchange device are mounted in the negative pressure area (204), the electric control assembly (100) is mounted in the mounting area (205), and the mounting area (205) is communicated with the air inlet (206) and the negative pressure area (204);

the electric control assembly (100) comprises an electric control box (1), an electric control plate (21), a high-frequency inductor (22) and a radiator (3), wherein the electric control plate (21) is arranged inside the electric control box (1), the high-frequency inductor (22) is electrically connected with the electric control plate (21) and stretches out of the outer side of the electric control box (1), a first end of the radiator (3) is arranged on the electric control plate (21) and a second end of the radiator stretches out of the electric control box (1), and the radiator (3) is positioned on one side of the electric control plate (21) facing the negative pressure area (204).

2. The air conditioner indoor unit according to claim 1, wherein the radiator (3) has a plurality of heat dissipation channels arranged side by side, the heat dissipation channels being arranged vertically through, the radiator (3) being located between the air intake (206) and the high-frequency inductor (22);

and/or the projections of the radiator (3) and the high-frequency inductor (22) on the horizontal plane are positioned in the projection range of the electric control box (1) on the horizontal plane.

3. The air conditioner indoor unit of claim 1, wherein the electric control box (1) is provided with a mounting cavity, the electric control board (21) is mounted in the mounting cavity, an isolation box part (116) is convexly arranged at the bottom of the mounting cavity, the isolation box part (116) extends towards the electric control board (21), the electric control box (1) is provided with an inductance through hole (1115) penetrating through the isolation box part (116) and the bottom of the mounting cavity, and the high-frequency inductance (22) penetrates out of the electric control box through the inductance through hole (1115).

4. The air conditioner indoor unit according to claim 1, wherein the electric device on the electric control board (21) is provided on a side of the electric control board (21) facing the negative pressure region (204);

and/or, a high-heat-generation electric device is arranged on the electric control board (21), the high-heat-generation electric device comprises an IPM module (23), an ICGT module (24), a diode module (25) and/or a rectifier bridge module (26), and the first end of the radiator (3) is attached to the high-heat-generation electric device.

5. The air conditioner indoor unit of claim 1, wherein a side of the electric control box (1) facing the negative pressure area (204) is provided with a step surface, the step surface comprises a first step surface (1111) and a second step surface (1112) which are arranged in a step manner, the distance between the first step surface (1111) and the negative pressure area (204) is smaller than the distance between the second step surface (1112) and the negative pressure area (204), the second step surface (1112) is located between the air inlet (206) and the first step surface (1111), and the radiator (3) penetrates out of the second step surface (1112).

6. The air conditioner indoor set according to claim 5, wherein the step surface further includes an intermediate step surface (1113) between the first step surface (1111) and the second step surface (1112), the high-frequency inductor (22) penetrating out of the intermediate step surface (1113).

7. The air conditioner indoor set according to any one of claims 1-6, wherein the air inlet (206) comprises an auxiliary air inlet (2062) provided at the top of the installation area (205), a radiator fan (4) is further provided in the installation area (205), and the radiator fan (4) is used for guiding external air flow to enter the installation area (205) through the auxiliary air inlet (2062).

8. The air conditioner indoor unit according to claim 7, wherein the cooling fan (4) is located between the auxiliary air inlet (2062) and the radiator (3), an inlet end of the cooling fan (4) is opposite to the auxiliary air inlet (2062), and an air outlet end of the cooling fan (4) is opposite to the radiator (3).

9. The air conditioner indoor unit of claim 8, wherein the electric control box (1) comprises a box body (11) and a fan bracket (13) arranged at the upper end of the box body (11), the electric control board (21) is installed inside the box body (11), and the cooling fan (4) is detachably installed on the fan bracket (13).

10. The air conditioner indoor unit according to claim 9, wherein the fan bracket (13) comprises a support frame portion, one end of the support frame portion is connected with the box body (11), the other end of the support frame portion extends along a direction towards the negative pressure area (204), the support frame portion is arranged above the radiator (3) at intervals, the radiator fan (4) is mounted on the support frame portion, and a ventilation opening (1311) is formed in the support frame portion opposite to an air outlet end of the radiator fan (4).

11. The air conditioner indoor set according to claim 10, wherein a positioning portion (134) is provided on a top end of the supporting frame portion in a protruding manner, the positioning portion (134) is provided in a plurality around the ventilation opening (1311), and each side of the cooling fan (4) is abutted against at least one positioning portion (134);

and/or, the top end of the supporting frame part is convexly provided with a plurality of boss parts (135), the boss parts (135) are arranged around the ventilation opening (1311), the cooling fan (4) is supported on the boss parts (135), and the cooling fan (4) is connected with the fan bracket (13) through a connecting screw member penetrating through the cooling fan (4) and the boss parts (135);

and/or, the support frame part comprises a support top plate part (131) and a connecting plate part (132) vertically connected to one side lower part of the support top plate part (131), the lower end of the connecting plate part (132) is connected with the upper end of the box body (11), and the ventilation opening (1311) is formed in the support top plate part (131).

12. An air conditioner indoor unit according to any one of claims 1-6, wherein the electric control box (1) comprises a box body (11) and a cover body (12), the box body (11) is provided with a mounting groove with an opening facing away from the negative pressure area (204), the cover body (12) covers the opening of the mounting groove and is detachably connected with the box body (11), and the electric control board (21) is detachably mounted on the box body (11).