CN222378267U - Electric control box and air conditioner with same - Google Patents

Abstract

The utility model discloses an electric control box and an air conditioner with the same, wherein the electric control box comprises: the box body and circuit board form in the box body and hold the chamber, and the circuit board is located and is held the chamber and flip-chip in the roof of box body. The box body comprises an inner shell and an outer shell, wherein a bottom plate of the inner shell is provided with a concave part, at least one side part of the concave part is a ventilation part, the ventilation part defines a first air passage, and the upper end of the first air passage is communicated with the accommodating cavity. The shell cover is arranged outside the inner shell and comprises a ventilation side wall arranged facing the ventilation part, the ventilation side wall is spaced apart from the ventilation part and forms a second air passage, a first ventilation hole communicated with the second air passage is formed in the ventilation side wall, and a through hole communicated with the second air passage and the first air passage is formed in the lower end of the ventilation part. Through setting up crisscross first wind passageway and the second wind passageway that crosses that sets up and end to end, reduce the condition that the water droplet enters into the holding intracavity and take place, reduce the risk of circuit board short circuit that intakes, promote the operational reliability of automatically controlled box.

Description

Electric control box and air conditioner with same

Technical Field

The utility model relates to the technical field of electric control components, in particular to an electric control box and an air conditioner with the same.

Background

The automatically controlled box is generally installed outside the off-premises station, and the water-proof effects is not good, and rainwater or comdenstion water get into the automatically controlled box inside along with the rotation of fan easily to make the inside electronic components of automatically controlled box intake, have the risk that leads to the electric components in the automatically controlled box to short circuit damage, influence the normal use of automatically controlled box.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the electric control box which can radiate heat and simultaneously can prevent water, reduce the risk of water inlet short circuit of the circuit board and improve the working reliability of the electric control box.

The utility model also provides an air conditioner with the electric control box.

The electric control box comprises a box body and a circuit board, wherein a containing cavity is formed in the box body, the circuit board is arranged in the containing cavity and is inversely arranged on a top plate of the box body, the box body comprises an inner shell, a bottom plate of the inner shell is provided with a concave portion, at least one side portion of the concave portion is a ventilation portion, the ventilation portion is used for limiting a first air passing channel, the upper end of the first air passing channel is communicated with the containing cavity, an outer shell is covered outside the inner shell and comprises a ventilation side wall which faces the ventilation portion, the ventilation side wall is spaced from the ventilation portion to form a second air passing channel between the ventilation side wall and the ventilation portion, a first ventilation hole which is communicated with the second air passing channel is formed in the ventilation side wall, and an air passing port which is communicated with the second air passing channel and the first air passing channel is formed in the lower end of the ventilation portion.

According to the electric control box provided by the embodiment of the utility model, the first air-passing channels and the second air-passing channels which are arranged in a staggered manner and connected end to end are arranged between the inner shell and the outer shell, the air flow firstly flows downwards along the second air-passing channels and then flows upwards along the first air-passing channels into the accommodating cavity, liquid drops in the air flow can be remained in the second air-passing channels or the first air-passing channels under the action of the blocking of the ventilation part and the gravity, the heat dissipation of the circuit board can be realized, the occurrence of the condition that water drops enter the accommodating cavity can be reduced, the risk of water inlet short circuit of the circuit board is reduced, and the working reliability of the electric control box is improved.

In some embodiments, the first vent is higher than the through-flow opening, and/or the first vent is multiple and the aperture of each first vent is smaller than the height of the through-flow opening in the up-down direction.

In some embodiments, the through-flow opening is formed as an elongated opening extending along the length direction of the ventilation part, the first through-air passage is formed as an elongated passage extending along the length direction of the ventilation part, and a supporting rib supported between two width side walls of the first through-air passage is arranged in the first through-air passage.

In some embodiments, the width W1 of the second overwind channel is smaller than the width W2 of the first overwind channel in a direction of separation of the ventilation side wall from the ventilation portion.

In some embodiments, the side portion of the recess includes a first side portion and a third side portion that are disposed adjacent to each other in a different extending direction, the ventilation portion includes the first side portion and the third side portion, and the ventilation side wall includes a first side wall disposed facing the first side portion, and a third side wall disposed facing the third side portion.

In some embodiments, the side portion of the recess includes a first side portion, the ventilation portion includes the first side portion, and a second ventilation hole is formed in a side of the case spaced from and disposed opposite to the first side portion in the first direction, and the second ventilation hole communicates with the receiving chamber.

In some embodiments, the inner shell includes a second side portion spaced from and disposed opposite to the first side portion along the first direction, the second ventilation hole is formed on the second side portion, a wall surface of the outer shell corresponding to the second side portion has an avoidance opening, and the second ventilation hole is disposed corresponding to the avoidance opening.

In some embodiments, the electronic control box further comprises a radiator, wherein the radiator is arranged on the circuit board and comprises a radiating part positioned outside the box body, and the radiating part is arranged on one side, away from the first ventilation hole, of the second ventilation hole.

In some embodiments, the second side portion is provided with a flow guiding rib extending towards the direction of the heat dissipation portion, and the flow guiding rib penetrates through the avoidance opening and is located at the second ventilation hole.

In some embodiments, the guide ribs extend obliquely downwards from the second ventilation holes to the heat dissipation part, and/or the guide ribs are multiple and are arranged at intervals in the up-down direction.

In some embodiments, the heat dissipation portion includes a plurality of fins arranged at intervals, and heat dissipation gaps are formed between adjacent fins, the heat dissipation gaps are open towards the direction of the second side portion, and the end portions of the flow guiding ribs extend to abut against or are in clearance fit with the heat dissipation portion.

In some embodiments, the second ventilation aperture is higher than an upper end of the first ventilation channel.

In some embodiments, the outer shell is a sheet metal part and the inner shell is a plastic part.

An air conditioner according to a second aspect of the present utility model comprises a fan assembly and an electronic control box according to the first aspect of the present utility model, the electronic control box being provided in a wind field formed by the fan assembly.

According to the air conditioner provided by the utility model, by arranging the electric control box in the first aspect, the heat dissipation efficiency of the electric control box is higher, so that the operation stability of the air conditioner is improved.

In some embodiments, the fan component includes an axial flow wind wheel with a horizontal axis, the electric control box is arranged above the axial flow wind wheel, an airflow flowing in a first direction from a first side to a second side is formed above the axial flow wind wheel, and the electric control box is provided with the first ventilation hole on one side, close to the first side, in the first direction.

In some embodiments, the air conditioner comprises an outer machine part suitable for being arranged outdoors and an inner machine part suitable for being arranged indoors, and the electric control box is arranged on the outer machine part.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

Fig. 1 is a cross-sectional view of an electronic control box according to one embodiment of the present utility model;

fig. 2 is a cross-sectional view of a case body of the electronic control case according to one embodiment of the present utility model;

FIG. 3 is an enlarged partial view of area A according to the example shown in FIG. 2;

fig. 4 is another cross-sectional view of a housing of an electronic control cartridge according to one embodiment of the present utility model;

fig. 5 is a cross-sectional view of a housing of an electronic control cartridge according to one embodiment of the present utility model;

fig. 6 is yet another cross-sectional view of an electronic control box according to one embodiment of the present utility model;

fig. 7 is a block diagram of an electronic control box according to an embodiment of the present utility model;

fig. 8 is a schematic structural view of an axial flow wind wheel and an electric control box according to an embodiment of the present utility model.

Reference numerals:

an electronic control box 1000;

a housing chamber 101;

The inner shell 1, the concave part 1a, the ventilation part 11, the first plate part 111, the second plate part 112, the first side part 11a, the third side part 11b, the first air passing channel 12, the air passing port 13, the supporting rib 14, the second side part 15, the second ventilation hole 16, the guide rib 17 and the third plate part 18;

the housing 2, the ventilation side wall 21, the first side wall 21a, the third side wall 21b, the second ventilation channel 22, the first ventilation hole 23 and the avoidance opening 24;

A top plate 3;

A circuit board 400;

A heat radiating portion 500;

Fan assembly 2000, axial flow wind wheel 600;

A first direction X, and a direction X1 from the first side to the second side in the first direction.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the applicability of other processes and/or the use of other materials.

An electronic control box 1000 according to a first aspect of the present utility model is described below with reference to the accompanying drawings.

An electronic control box 1000 according to some embodiments of the present utility model, as shown in fig. 1, includes a box body 100 and a circuit board 400, wherein a receiving cavity 101 is formed in the box body 100, and the circuit board 400 is disposed in the receiving cavity 101 and is flip-chip mounted on a top plate 3 of the box body 100.

The box body 100 comprises a top plate 3, an inner shell 1 and an outer shell 2, wherein the top plate 3 is positioned above the inner shell 1 and the outer shell 2, and the outer shell 2 is covered outside the inner shell 1. The box body 100 supports the circuit board 400 inside to be installed and protects the circuit board 400 in the accommodating cavity 101, and air flows through the accommodating cavity 101 to radiate heat of the circuit board 400 inside and other heating elements, so that the working reliability of the electric control box 1000 is improved. The top plate 3 is used for supporting and installing the circuit board 400, and air flow channels for the heat dissipation air flow to flow are formed on the inner shell 1 and the outer shell 2.

As shown in fig. 2, the bottom plate of the inner case 1 has a concave portion 1a, the cross-sectional area of the concave portion 1a is smaller than that of the upper portion of the inner case 1, and the concave portion 1a has a plurality of side portions. At least one side of the concave portion 1a is a ventilation portion 11, the ventilation portion 11 defining a first air passage 12, an upper end of the first air passage 12 communicating with the accommodation chamber 101.

The outer casing 2 is covered outside the inner casing 1 and includes a ventilation side wall 21 disposed facing the ventilation part 11, the ventilation side wall 21 being spaced apart from the ventilation part 11 to form a second ventilation passage 22 between the ventilation side wall 21 and the ventilation part 11. The ventilation side wall 21 is formed with a first ventilation hole 23 communicating with the second ventilation passage 22, and the lower end of the ventilation part 11 is formed with a ventilation port 13 communicating the second ventilation passage 22 with the first ventilation passage 12.

It should be noted that, the up-down direction refers to the direction of the electronic control box 1000 shown in fig. 1 and 2 when the electronic control box 1000 is operating normally, the inside-outside direction refers to the direction of the electronic control box 1000, the direction close to the accommodating cavity 101 of the electronic control box 1000 is the inside direction, and the direction far from the accommodating cavity 101 of the electronic control box 1000 is the outside direction.

The upper end of the ventilation part 11 is open and is communicated with the accommodating cavity 101, and the lower end of the ventilation part 11 is also open and is communicated with the second air-passing channel 22 so as to communicate the inside and the outside of the electronic control box 1000, and the air flow outside the electronic control box 1000 flows into the accommodating cavity 101 to accelerate the heat dissipation of the circuit board 400.

The ventilation side walls 21 and the ventilation parts 11 are arranged in one-to-one correspondence, alternatively, one side part of the concave part 1a is the ventilation part 11, the shell 2 is provided with one ventilation side wall 21 arranged facing the ventilation part 11, and a second ventilation channel 22 communicated with the outside of the electronic control box 1000 is formed between the ventilation side wall 21 and the ventilation part 11. Or alternatively, the plurality of side parts of the concave part 1a are ventilation parts 11, the shell 2 is provided with a plurality of ventilation side walls 21, so that a second air passing channel 22 is formed between the ventilation side walls 21 and the ventilation parts 11, and the air flow flowing into the electronic control box 1000 can be improved by arranging a plurality of second air passing channels 22, so that the heat dissipation efficiency of the electronic control box 1000 is improved.

As shown in fig. 2 and 3, the ventilation part 11 and the ventilation side wall 21 each extend in the up-down direction, and the first ventilation passage 12 defined by the ventilation part 11 and the second ventilation passage 22 defined between the ventilation side wall 21 and the ventilation part 11 each extend in the up-down direction.

The air outside the electronic control box 1000 flows into the second air passing channel 22 through the first ventilation hole 23, then flows downward along the second air passing channel 22 formed between the outer case 2 and the inner case 1, then flows into the first air passing channel 12 through the air passing port 13 at the lower end of the ventilation part 11, and finally flows upward along the first air passing channel 12 defined by the ventilation part 11, and flows into the accommodating chamber 101 to accelerate heat dissipation of the circuit board 400.

By forming the first ventilation hole 23 into which the air flow flows on the ventilation side wall 21, compared with directly opening the housing, the first ventilation hole 23 can filter out impurities of large particles, reduce the entry of water drops, dust or insects into the electronic control box 1000, and improve the cleanliness of the air flow entering the electronic control box 1000.

By providing the first and second air-passing passages 12, 22 in a staggered arrangement and end-to-end, the air flow into the electronic control box 1000 may be further filtered. After the air flow and the liquid drops flow into the second air-passing channel 22 through the first ventilation hole 23 at the same time, the air flow firstly flows downwards along the second air-passing channel 22 and then flows upwards along the first air-passing channel 12 into the accommodating cavity 101, and the liquid drops remain in the second air-passing channel 22 or the first air-passing channel 12 under the action of gravity.

The circuit board 400 inside the electronic control box 1000 of the embodiment of the utility model utilizes air cooling to dissipate heat, does not perform glue filling treatment, can realize the design of only air inlet and no water inlet by adopting a labyrinth structure in the box body 100, further reduces the occurrence of the condition that liquid flows into the accommodating cavity 101, reduces the risk of water inlet short circuit of the circuit board 400, and improves the working reliability of the electronic control box 1000. The electric control box 1000 can realize rain and water resistance, and can realize heat dissipation to the circuit board 400 and the heating element in the electric control box 1000, so that the electric control box 1000 can realize synchronous water resistance through air flow heat dissipation in natural environment.

The liquid filtered in the first air-passing channel 12 and the second air-passing channel 22 is discharged out of the electronic control box 1000, so that the influence on the structural strength of the box body 100 is reduced, and the air flow in the first air-passing channel 12 and the second air-passing channel 22 is not influenced. Illustratively, liquid within the first or second overwind passage 12, 22 may flow out of the electronic control box 1000 from the gap between the inner and outer shells 1, 2.

In addition, even if liquid flows into the accommodating chamber 101, the liquid is accumulated at the bottom of the case 100 under the action of gravity, and by flip-chip mounting the circuit board 400 on the top plate 3 of the case 100, the risk of water short-circuiting of the circuit board 400 can be further reduced.

According to the electronic control box 1000 of the embodiment of the present utility model, by arranging the first air-passing channel 12 and the second air-passing channel 22 which are staggered and connected end to end between the inner casing 1 and the outer casing 2, the air flow firstly flows downwards along the second air-passing channel 22 and then flows upwards along the first air-passing channel 12 into the accommodating cavity 101, and the droplets entrained in the air flow can remain in the second air-passing channel 22 or the first air-passing channel 12 under the action of the blocking of the ventilation part 11 and the action of gravity, so that the occurrence of the condition that the water droplets enter into the accommodating cavity 101 can be reduced while the heat of the circuit board 400 is dissipated, the risk of water inlet short circuit of the circuit board 400 is reduced, and the working reliability of the electronic control box 1000 is improved.

In some embodiments of the present utility model, as shown in fig. 3, the ventilation part 11 includes a first plate part 111 and a second plate part 112 extending in the up-down direction, and the first plate part 111 and the second plate part 112 are spaced apart to form the first wind passing passage 12. The second plate portion 112 is located outside the first plate portion 111, and a second air passing passage 22 is formed between the ventilation side wall 21 and the second plate portion 112, and a lower end of the second plate portion 112 is spaced apart from the housing 2 to form the air passing port 13.

As shown in fig. 3, the inner case 1 further includes a third plate portion 18 extending toward the inside, and the third plate portion 18 is connected to the upper end of the second plate portion 112 to isolate the upper end of the second air passage 22 from the accommodating chamber 101, preventing the air flow flowing in from the first ventilation hole 23 from directly flowing into the accommodating chamber 101.

In some embodiments of the utility model, as shown in FIG. 2, the first vent 23 is higher than the vent 13.

Through setting the first ventilation hole 23 higher than the through-flow opening 13, the liquid drop entering the second through-air channel 22 through the first ventilation hole 23 can be blocked by the ventilation part 11, so that the situation that the liquid drop directly rushes into the accommodating cavity 101 can be reduced, the risk of water inlet short circuit of the circuit board 400 is reduced, and the working reliability of the electric control box 1000 is improved.

In some embodiments of the present utility model, as shown in fig. 2, the first vent holes 23 are plural and the aperture of each of the first vent holes 23 is smaller than the height of the through-flow opening 13 in the up-down direction.

By providing a plurality of first ventilation holes 23, the amount of air flowing into the electronic control box 1000 can be increased, and the heat dissipation speed of the circuit board 400 can be increased. Through designing the aperture of the first ventilation hole 23 to be smaller than the height of the through-flow opening 13 in the up-down direction, impurities with large particles can be filtered, the through-flow opening 13 is prevented from being blocked by large particles or worms entering the second through-air passage 22, the air flow between the first through-air passage 12 and the second through-air passage 22 is improved, the air flow effect is good, and the heat dissipation reliability of the electronic control box 1000 is improved.

In some embodiments of the present utility model, as shown in fig. 4, the through-flow port 13 is formed as an elongated opening extending in the length direction of the ventilation part 11, the first through-air passage 12 is formed as an elongated passage extending in the length direction of the ventilation part 11, and the first through-air passage 12 is provided therein with a support rib 14 supported between both width side walls of the first through-air passage 12. For example, when the first side portion 11a shown in fig. 4 is used as the ventilation portion 11, the longitudinal direction of the first side portion 11a is the front-rear direction, and the first ventilation passage 12 defined by the first side portion 11a and the ventilation port 13 formed in the first side portion 11a extend in the front-rear direction. For example, when the third side portion 11b shown in fig. 4 is used as the ventilation portion 11, the length direction of the third side portion 11b is the left-right direction, and the first ventilation passage 12 defined by the third side portion 11b and the ventilation port 13 formed in the third side portion 11b extend in the left-right direction.

The through-flow openings 13 are formed along the extending direction of the first air-passing channel 12 and are designed to be long, so that smooth circulation of air flow from the second air-passing channel 22 to the first air-passing channel 12 is facilitated, and ventilation efficiency is improved.

By arranging the supporting ribs 14 supported between the two width side walls of the first air passage 12 in the first air passage 12, the structural stability of the first air passage 12 can be improved, the vibration or deformation of the first air passage 12 caused by airflow flow can be improved, and the working reliability of the ventilation part 11 can be improved.

In some embodiments of the present utility model, the ventilation part 11 includes a first plate part 111 and a second plate part 112 extending in the up-down direction, the first plate part 111 and the second plate part 112 being spaced apart to form the first wind passing channel 12, the supporting rib 14 being connected between the first plate part 111 and the second plate part 112, the structural strength of the ventilation part 11 being improved, and the structural stability of the first wind passing channel 12 being improved.

In some embodiments of the present utility model, as shown in fig. 5, the width W1 of the second ventilation channel 22 is smaller than the width W2 of the first ventilation channel 12 in the direction of the interval of the ventilation side wall 21 and the ventilation part 11.

In the process of flowing into the accommodating cavity 101 from the outside of the electronic control box 1000, the air flow firstly passes through the second air passing channel 22 with smaller width and then flows through the first air passing channel 12 with wider width. Slowing the flow rate of the air flow during the process of flowing the air flow from the second air passing channel 22 into the first air passing channel 12 is beneficial to keeping mixed liquid drops in the air flow in the second air passing channel 22 or in the first air passing channel 12, and reducing the occurrence of flowing the liquid into the accommodating cavity 101.

In some embodiments of the present utility model, as shown in fig. 4, the side portion of the depressed portion 1a includes a first side portion 11a and a third side portion 11b which are disposed adjacently with different extending directions, the ventilation portion 11 includes the first side portion 11a and the third side portion 11b, and the ventilation side wall 21 includes a first side wall 21a disposed facing the first side portion 11a and a third side wall 21b disposed facing the third side portion 11 b.

By providing both the first side portion 11a and the third side portion 11b as the ventilation portion 11, the housing 2 also includes the first side wall 21a provided facing the first side portion 11a and the third side wall 21b provided facing the third side portion 11b, and the airflow passage flowing into the electronic control box 1000 is increased, the airflow amount flowing into the electronic control box 1000 can be increased, and the heat dissipation efficiency of the electronic control box 1000 can be improved.

As shown in fig. 2 and 4, the first side 11a is a ventilation part 11, and the first side 11a defines a first air passage 12, and an upper end of the first air passage 12 communicates with the accommodating chamber 101. A second air passage 22 is formed between the first side wall 21a and the first side portion 11a, a first vent hole 23 is formed in the first side wall 21a, and an air passage port 13 communicating the first air passage 12 and the second air passage 22 is formed at the lower end of the first side portion 11 a.

As shown in fig. 6 and 4, the third side portion 11b is a ventilation portion 11, and the third side portion 11b defines a first air passage 12, and an upper end of the first air passage 12 communicates with the accommodating chamber 101. A second air passing channel 22 is formed between the third side wall 21b and the third side part 11b, a first ventilation hole 23 is formed on the third side wall 21b, and an air passing port 13 which is communicated with the first air passing channel 12 and the second air passing channel 22 is formed at the lower end of the third side part 11 b.

In some embodiments of the present utility model, as shown in fig. 4, the right side of the concave portion 1a is a first side 11a, the front side of the concave portion 1a is a third side 11b, the first side 11a and the third side 11b are disposed adjacently, and the first side 11a and the third side 11b are each formed as a ventilation portion 11. The right front side wall of the housing 2 is a first side wall 21a, the front side wall of the housing 2 is a third side wall 21b, and the first side wall 21a and the third side wall 21b are adjacent and connected to each other.

As shown in fig. 4, the right end of the third side portion 11b is connected to the right side of the depressed portion 1a, the first side portion 11a is connected to the third side portion 11b, and the second air passage 22 formed between the first side wall 21a and the first side portion 11a is at least partially in communication with the first air passage 12 formed by the third side portion 11 b. After the second air passage 22 formed between the third side wall 21b and the third side portion 11b is deformed or blocked, the air can be further blown to the first air passage 12 formed by the third side portion 11b through the second air passage 22 formed between the first side wall 21a and the first side portion 11a, so as to keep large air volume for air intake and dissipate heat of the electronic control box 1000 at a high speed.

In some embodiments of the present utility model, as shown in fig. 2 and 5, the side of the recess 1a includes a first side 11a, the ventilation part 11 includes the first side 11a, and a second ventilation hole 16 is formed at a side of the case 100 spaced apart from and opposite to the first side 11a in the first direction X, and the second ventilation hole 16 communicates with the receiving chamber 101.

Through setting up second ventilation hole 16 intercommunication and hold chamber 101 and the automatically controlled box 1000 outside, form from automatically controlled box 1000 outside to hold chamber 101, again to the complete air current route that automatically controlled box 1000 flows outward, reinforcing air current flow effect promotes the radiating efficiency of automatically controlled box 1000.

And the second ventilation hole 16 is arranged on the side opposite to the first side 11a, so that the airflow path of the airflow flowing through the accommodating cavity 101 can be increased, the heat dissipation airflow can exchange heat with the circuit board 400 and the heating element in the accommodating cavity 101 sufficiently, and the heat dissipation effect is improved.

In some embodiments of the present utility model, as shown in fig. 2 and 5, the inner case 1 includes a second side portion 15 spaced apart from and opposite to the first side portion 11a in the first direction X, the second ventilation holes 16 are formed on the second side portion 15, the wall surface of the outer case 2 corresponding to the second side portion 15 is formed with the escape openings 24, and the second ventilation holes 16 are disposed corresponding to the escape openings 24.

The casing 2 is wrapped on the second side 15, so as to improve the structural strength of the box 100. The wall surface of the shell 2 corresponding to the second side part 15 is provided with the avoidance opening 24, and the avoidance opening 24 is arranged to avoid the second ventilation hole 16, so that smooth outflow of air flow from the electronic control box 1000 through the second ventilation hole 16 is ensured, the air flow is good, and the heat dissipation effect of the electronic control box 1000 can be improved.

In some embodiments of the present utility model, as shown in fig. 1 and 7, the electronic control box 1000 further includes a heat sink provided on the circuit board 400 and including a heat dissipation portion 500 located outside the box body 100, the heat dissipation portion 500 being provided on a side of the second ventilation hole 16 remote from the first ventilation hole 23.

The heat sink is connected with the circuit board 400 to transfer heat generated from the circuit board 400 to the heat sink, thereby accelerating heat dissipation of the circuit board 400. And at least part of the radiator is located outside the box body 100, and the radiator conducts the heat of the circuit board 400 to the outside of the box body 100, so that the heat dissipation speed of the circuit board 400 is improved.

The heat dissipation part 500 of the radiator outside the case 100 is disposed outside the second ventilation hole 16, and in the flow direction of the heat dissipation air flow, the radiator is disposed at the downstream of the circuit board 400, the air flow firstly exchanges heat through the circuit board 400, then dissipates heat through the radiator, and the flow of one air flow can secondarily dissipate heat of the circuit board 400, thereby improving the heat dissipation speed of the circuit board 400.

And the radiator is located the outer heat dissipation part 500 of box body 100 and is close to second ventilation hole 16 department and keep away from first ventilation hole 23 and set up, reduces the condition that the air current after heat transfer with the radiator directly flows into first ventilation hole 23, avoids the heat of radiator to cause adverse effect to the heat dissipation of circuit board 400, promotes the radiating effect of circuit board 400.

In some embodiments of the present utility model, as shown in fig. 2 and 5, the second side portion 15 is provided with a flow guiding rib 17 extending toward the heat dissipating portion 500, where the flow guiding rib 17 penetrates through the avoidance opening 24 and is located at the second ventilation hole 16.

The air flow flowing out of the second ventilation holes 16 is guided by the guide ribs 17, so that the air flow is guided to the heat dissipation part 500 of the radiator, and the stable flow of the air flow can improve the heat dissipation efficiency of the radiator. The avoidance opening 24 also avoids the extension of the guide rib 17, so that interference to the guide rib 17 is avoided.

In some embodiments of the present utility model, as shown in fig. 2 and 5, the deflector rib 17 extends obliquely downward from the second ventilation hole 16 to the heat radiating portion 500.

The guide ribs 17 extend obliquely downward to guide the air flow from the second ventilation holes 16 to the heat dissipation part 500, and the air flow can be stably flowed by the action of gravity, so that the heat dissipation efficiency of the radiator is improved.

In some embodiments of the present utility model, as shown in fig. 2 and 5, the plurality of guide ribs 17 are arranged at intervals in the up-down direction.

The guiding effect on the air flow can be improved by arranging the plurality of guide ribs 17, a plurality of air flow paths are provided, the air flow is uniformly distributed, the heat dissipation effect on the heat dissipation part 500 is improved, and the generation of local hot spots is avoided.

In some embodiments of the present utility model, as shown in fig. 7, the heat dissipating part 500 includes a plurality of fins 5 arranged at intervals, heat dissipating gaps are formed between adjacent fins 5, the heat dissipating gaps are opened toward the second side 15, and ends of the guide ribs 17 extend to abut against or be in clearance fit with the heat dissipating part 500.

The ventilation direction of the heat dissipation gap is consistent with the direction of the air flow flowing out of the second ventilation holes 16, the air flow flowing out of the second ventilation holes 16 on the second side part 15 can directly flow to a plurality of heat dissipation gaps, the air flow is in contact with the fins 5 to perform heat exchange, the contact area of the air flow and the fins 5 is large, and the heat dissipation effect is improved.

Optionally, the end of the guide rib 17 extends to abut against the heat dissipation portion 500, and the guide rib 17 and the heat dissipation component support each other, so as to improve the structural reliability of the electronic control box 1000.

Still alternatively, the ends of the ribs extend to be in clearance fit with the heat dissipation portion 500, so that turbulence generated by the airflow directly impacting the heat dissipation portion 500 can be improved, airflow flowing effect can be improved, and heat dissipation effect of the radiator can be improved.

In some embodiments of the utility model, the end of the baffle and the heat sink member of the heat sink are clearance fit at a spacing of 2mm or less.

In some embodiments of the present utility model, as shown in fig. 5 and 6, the second ventilation holes 16 are higher than the upper ends of the first ventilation channels 12.

The circuit board 400 is mounted on the top plate 3 at the top of the case 100, so that the second ventilation holes 16 are disposed higher than the upper ends of the first ventilation channels 12, and the second ventilation holes 16 are closer to the circuit board 400 than the upper ends of the first ventilation channels 12. By providing the second ventilation hole 16 higher than the upper end of the first ventilation channel 12, it is possible to reduce the situation that the air flow directly flows out of the second ventilation hole 16 without exchanging heat with the circuit board 400 after flowing into the accommodating chamber 101 from the first ventilation channel 12. The air flow flowing into the accommodating cavity 101 is guided to flow upwards, and flows out of the second ventilation holes 16 after fully exchanging heat with the circuit board 400, so that the heat dissipation effect of the circuit board 400 can be improved.

In some embodiments of the utility model, the outer shell 2 is a sheet metal part and the inner shell 1 is a plastic part.

The outer sheet metal component can play the fire prevention effect, promotes the safety in utilization of automatically controlled box 1000 to the sheet metal component can protect the inner shell 1 that is located the inboard, delays ageing of working of plastics, prolongs the life of automatically controlled box 1000.

The plastic member is lighter in weight than the sheet metal member, which is advantageous in reducing the weight of the electronic control box 1000 and can save manufacturing costs.

An air conditioner according to an embodiment of the second aspect of the present utility model is described below.

The air conditioner according to the embodiment of the utility model comprises a fan component 2000 and an electric control box 1000, wherein the electric control box 1000 is the electric control box 1000 according to the embodiment of the first aspect of the utility model, and the electric control box 1000 is arranged in a wind field formed by the fan component 2000.

The blower part 2000 is used for generating flowing air flow, and by arranging the electric control box 1000 in a wind field formed by the blower part 2000, the blower part 2000 blows the air flow into the electric control box 1000, so that the air flow speed is increased, the air flow quantity is increased, and the heat dissipation efficiency of the electric control box 1000 is improved.

According to the air conditioner provided by the embodiment of the utility model, by arranging the electric control box 1000 in the first aspect of the utility model, the heat dissipation efficiency of the electric control box 1000 is higher, so that the operation stability of the air conditioner is improved.

In some embodiments of the present utility model, as shown in fig. 8, the fan assembly 2000 includes an axial flow wind wheel 600 having an axis disposed horizontally, the electronic control box 1000 is disposed above the axial flow wind wheel 600, an air flow flowing in a first direction from a first side to a second side in a direction X1 is formed above the axial flow wind wheel 600, and a side of the electronic control box 1000 adjacent to the first side in the first direction X is provided with a first ventilation hole 23.

The air flow flows from the first side to the second side in the direction X1 in the first direction by the positive and negative pressure generated by the axial flow wind wheel 600, flows into the electronic control box 1000 from the first vent hole 23, and flows along the labyrinth formed by the second air passage 22 and the first air passage 12.

The arrangement positions of the electric control box 1000 and the axial flow wind wheel 600 are beneficial to improving the airflow velocity and the airflow quantity flowing into the electric control box 1000, optimizing the airflow management in the whole air conditioner, ensuring the uniformity and the efficiency of the airflow and improving the heat dissipation efficiency of the electric control box 1000.

And the electric control box 1000 is arranged above the axial flow wind wheel 600, the air flow flows upwards, the first air passing channel 12 formed by the ventilation part 11 extends from bottom to top, the ventilation part 11 can guide the air flow, the resistance of a flow field is reduced, and the heat dissipation efficiency of the electric control box 1000 is improved.

The blowing of the axial flow wind wheel 600 can also accelerate the liquid drops in the first air passing channel 12 or the second air passing channel 22 to flow out from the gap between the inner shell 1 and the outer shell 2, so as to improve the working stability of the electric control box 1000.

In some embodiments of the present utility model, the air conditioner includes an outdoor unit portion adapted to be located outdoors and an indoor unit portion adapted to be located indoors, and the electronic control box 1000 is provided at the outdoor unit portion.

The inner unit part is used for adjusting indoor temperature, the outer unit part is arranged outdoors, the refrigerant circulates between the inner unit part and the outer unit part, and the electric control box 1000 is arranged on the outer unit part. The box body 100 of the electric control box 1000 adopts a labyrinth structure, so that the design of only air inlet and no water inlet can be realized, the electric control box 1000 can realize rain and water resistance, and can realize heat dissipation to the circuit board 400 and the heating element in the electric control box 1000, the electric control box 1000 can realize synchronous water resistance through air flow heat dissipation in natural environment, the risk of water inlet short circuit of the circuit board 400 is reduced, and the working reliability of the electric control box 1000 is improved.

In the description of the present utility model, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured 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 for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, or in communication, directly connected, or indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims (16)

1. The electric control box is characterized by comprising a box body and a circuit board, wherein a containing cavity is formed in the box body, the circuit board is arranged in the containing cavity and is inversely arranged on a top plate of the box body, and the box body comprises:

The bottom plate of the inner shell is provided with a lower concave part, at least one side part of the lower concave part is a ventilation part, the ventilation part defines a first air passage, and the upper end of the first air passage is communicated with the accommodating cavity;

The shell is covered outside the inner shell and comprises a ventilation side wall arranged facing the ventilation part, the ventilation side wall is spaced apart from the ventilation part so as to form a second air-passing channel between the ventilation side wall and the ventilation part, a first ventilation hole communicated with the second air-passing channel is formed in the ventilation side wall, and an air-passing port communicated with the second air-passing channel and the first air-passing channel is formed in the lower end of the ventilation part.

2. The electronic control box according to claim 1, wherein the first vent hole is higher than the through-flow opening, and/or the first vent holes are multiple and each have a smaller aperture than the height of the through-flow opening in the up-down direction.

3. The electronic control box according to claim 1, wherein the through-flow opening is formed as an elongated opening extending in a length direction of the ventilation portion, the first through-air passage is formed as an elongated passage extending in the length direction of the ventilation portion, and a support rib is provided in the first through-air passage and supported between both width side walls of the first through-air passage.

4. The electronic control box according to claim 1, wherein a width W1 of the second air passage is smaller than a width W2 of the first air passage in a direction of a spacing of the ventilation side wall from the ventilation portion.

5. The electronic control box according to claim 4, wherein the side portion of the depressed portion includes a first side portion and a third side portion which are provided adjacently with different extending directions, the ventilation portion includes the first side portion and the third side portion, the ventilation side wall includes a first side wall provided facing the first side portion, and a third side wall provided facing the third side portion.

6. The electronic control box according to claim 1, wherein the side portion of the recessed portion includes a first side portion, the ventilation portion includes the first side portion, and a second ventilation hole is formed in a side of the box body which is spaced from and disposed opposite to the first side portion in the first direction, the second ventilation hole being in communication with the accommodation chamber.

7. The electronic control box of claim 6, wherein the inner housing includes a second side portion spaced from and disposed opposite to the first side portion in the first direction, the second ventilation hole is formed in the second side portion, a wall surface of the outer housing corresponding to the second side portion is formed with a relief opening, and the second ventilation hole is disposed corresponding to the relief opening.

8. The electronic control cartridge of claim 7, further comprising:

The radiator is arranged on the circuit board and comprises a radiating part positioned outside the box body, and the radiating part is arranged on one side, far away from the first vent hole, of the second vent hole.

9. The electronic control box according to claim 8, wherein a flow guide rib extending towards the direction of the heat dissipation portion is arranged on the second side portion, and the flow guide rib penetrates through the avoidance opening and is located at the second ventilation hole.

10. The electronic control box according to claim 9, wherein the flow guide ribs extend obliquely downwards from the second ventilation hole to the heat dissipation part, and/or the flow guide ribs are arranged in a plurality and vertically spaced manner.

11. The electronic control box according to claim 9, wherein the heat dissipation portion includes a plurality of fins arranged at intervals, heat dissipation gaps are formed between adjacent fins, the heat dissipation gaps are open toward the direction of the second side portion, and the end portions of the guide ribs extend to abut against or clearance fit with the heat dissipation portion.

12. The electronic control box of claim 6, wherein the second vent is higher than an upper end of the first vent passage.

13. The electrical control box of any one of claims 1-12, wherein the outer housing is a sheet metal part and the inner housing is a plastic part.

14. An air conditioner comprising a fan assembly and an electronic control box according to any one of claims 1 to 12, said electronic control box being provided in a wind field formed by said fan assembly.

15. The air conditioner according to claim 14, wherein the fan part includes an axial flow wind wheel whose axis is horizontally arranged, the electric control box is provided above the axial flow wind wheel, an air flow flowing in a first direction from a first side to a second side is formed above the axial flow wind wheel, and the electric control box is provided with the first ventilation hole on a side of the first direction close to the first side.

16. An air conditioner according to claim 15, wherein the air conditioner includes an outdoor unit portion adapted to be provided outdoors and an indoor unit portion adapted to be provided indoors, and the electric control box is provided at the outdoor unit portion.