Electric control box of air conditioner and air conditioner

Abstract

The application discloses an electric control box of an air conditioner and the air conditioner. The electric control box of the air conditioner comprises a radiator, and a supporting seat, wherein the radiator is installed on the supporting seat, the supporting seat defines a plurality of heat dissipation flow channels, the plurality of heat dissipation flow channels are arranged in sequence in the height direction of the electric control box, and the air outlets of at least two heat dissipation flow channels of the plurality of heat dissipation flow channels correspond to the radiator. Thus, the plurality of heat dissipation flow channels are defined by the supporting seat of the electric control box. When the air blade of the air conditioner rotates, a high-speed negative pressure area is formed between the radiator and the air blade, so that the air in the air conditioner flows through the plurality of heat dissipation flow channels and the radiator to cool and radiate the radiator, so that the radiator can reliably cool the components in the electric control box, so that the temperature of the components in the electric control box is always in a suitable working temperature range, which is beneficial to improving the working life of the components, and the size of the components can be reduced, so that the manufacturing cost of the components can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air conditioners, and in particular to an electric control box of an air conditioner and an air conditioner having the electric control box. BACKGROUND

[0002] In the related art, the electric control box of the air conditioner is provided with a radiator, which is used to cool the components (such as circuit boards, capacitors, and terminals, etc.) in the electric control box. However, the over-ventilation cooling of the radiator mainly relies on the hot air passing through the condenser to cool down, which results in that the radiator cannot reliably cool the components in the electric control box, and the working life of the components in the electric control box is relatively low. In addition, the size of the components cannot be reduced, which results in a relatively high manufacturing cost of the components. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present application is to provide an electric control box of an air conditioner, which can enable the radiator to reliably cool the components in the electric control box, so that the temperature of the components in the electric control box can always be within a suitable working temperature range, which is beneficial to improve the working life of the components, and the size of the components can be reduced, thereby reducing the manufacturing cost of the components.

[0004] The present application further provides an air conditioner.

[0005] The electric control box of the air conditioner according to the present application comprises: a radiator; a support seat, the radiator being mounted on the support seat, the support seat defining a plurality of heat dissipation flow channels, the plurality of heat dissipation flow channels being arranged in sequence in the height direction of the electric control box, and the air outlets of at least two of the plurality of heat dissipation flow channels corresponding to the radiator.

[0006] The electric control box of the air conditioner according to the present application, by defining a plurality of heat dissipation flow channels through the support seat of the electric control box, when the fan blades of the air conditioner are rotating, a high-speed negative pressure zone will be formed between the radiator and the fan blades, so that the air inside the air conditioner will flow through the plurality of heat dissipation flow channels and pass through the radiator to cool the radiator, so that the radiator can reliably cool the components in the electric control box, so that the temperature of the components in the electric control box can always be within a suitable working temperature range, which is beneficial to improve the working life of the components, and the size of the components can be reduced, thereby reducing the manufacturing cost of the components.

[0007] In some examples of the present application, the plurality of heat dissipation flow channels comprises: a first flow channel and a second flow channel, the first flow channel being located below the second flow channel.

[0008] In some examples of the present application, the first flow channel and the second flow channel both extend upwardly towards the heat sink in a direction from below to above of the electric control box.

[0009] In some examples of the present application, in a height direction of the first flow channel, a distance between a lowest point of the first flow channel and an inner surface of the first flow channel opposite to the lowest point is K1, a height of the heat sink is H, and a relationship 0.2H≤K1 is satisfied.

[0010] In some examples of the present application, the second flow channel is configured as a variable cross-section flow channel, in a height direction of the second flow channel, a minimum distance between a lower surface and an upper surface of the second flow channel is K2, and a relationship 0.2H≤K2 is satisfied.

[0011] In some examples of the present application, the support base comprises a rain baffle provided at one side of the heat sink, a distance between the rain baffle and the heat sink is m, and a relationship 0.5(K1+K2)≤m is satisfied.

[0012] In some examples of the present application, the support base defines a total flow channel, a partition plate is provided in the total flow channel, and the partition plate separates the total flow channel into the first flow channel and the second flow channel.

[0013] In some examples of the present application, in a height direction of the electric control box, a projection of a lowest point of an upper surface of the second flow channel is located on a side close to the heat sink of a projection of a lowest point of the partition plate.

[0014] In some examples of the present application, in a height direction of the electric control box, a highest point of the partition plate is located above a lowest point of an upper surface of the second flow channel.

[0015] In some examples of the present application, in a height direction of the electric control box, a distance between a highest point of the partition plate and the heat sink is Hn, a height of the heat sink is H, and a relationship 0.4H≤Hn≤0.6H is satisfied.

[0016] In some examples of the present application, in an extension direction of the first flow channel, the first flow channel is respectively provided with the air outlet and the air inlet at two ends thereof, and a cross-sectional area of the first flow channel gradually increases in a direction from the air inlet to the air outlet.

[0017] In some examples of the present application, in an extension direction of the second flow channel, the second flow channel is respectively provided with the air outlet and the air inlet at two ends thereof, and a cross-sectional area of the second flow channel gradually decreases and then gradually increases in a direction from the air inlet to the air outlet.

[0018] The air conditioner according to the present application comprises the electric control box of the air conditioner described above.

[0019] Additional aspects and advantages of the present application will be apparent from the following description, taken in conjunction with the accompanying drawings, wherein: BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0021] Figure 1 is an exploded schematic view of an outdoor unit of an air conditioner according to an embodiment of the present application;

[0022] Figure 2 is a cross-sectional schematic view of an electric control box, a fan blade, and a middle partition plate according to an embodiment of the present application;

[0023] Figure 3 is a cross-sectional schematic view of an electric control box and a middle partition plate according to an embodiment of the present application;

[0024] Figure 4 is another cross-sectional schematic view of an electric control box and a middle partition plate according to an embodiment of the present application;

[0025] Figure 5 is a schematic view of an electric control box according to an embodiment of the present application.

[0026] REFERENCE NUMERALS:

[0027] Air conditioner 100; Electric control box 200;

[0028] Radiator 10;

[0029] Support seat 20; Radiator flow channel 21; First flow channel 22; Second flow channel 23; First support plate 24; Second support plate 25; Air inlet 26; Air outlet 27; Rain shield 28; Partition plate 29;

[0030] Appearance sheet metal part 30; Front panel 31; Top cover 32; Right enclosure plate 33; Air duct cavity 35; Press machine cavity 36; Press machine side 37; Electric control side 38;

[0031] Fan blade 40; Middle partition plate 50; First partition plate 51; Component 60; Circuit board 61; High-speed negative pressure zone 70; Notch 71. DETAILED DESCRIPTION

[0032] Embodiments of the present application are described in detail below with reference to the attached drawings, which show by way of example embodiments in which like numerals indicate like elements or elements having the same or similar function. The embodiments described below are examples only, and are not to be construed as limiting the present application.

[0033] Reference will now be made to Figures 1-5 An electric control box 200 of an air conditioner 100 according to an embodiment of the present application is described below.

[0034] As shown in Figures 1-5 , the electric control box 200 according to the embodiment of the present application comprises a heat sink 10 and a support base 20.

[0035] The heat sink 10 is arranged on the support base 20, and the support base 20 can define a plurality of heat dissipation flow channels 21. In the height direction of the electric control box 200 (i.e. the up-down direction as shown in Figure 2 , the plurality of heat dissipation flow channels 21 are arranged in sequence, and in the plurality of heat dissipation flow channels 21, the air outlets 27 of at least two heat dissipation flow channels 21 are arranged correspondingly to the heat sink 10.

[0036] Optionally, the electric control box 200 can be arranged in an outdoor unit of the air conditioner 100. Of course, the electric control box 200 can also be arranged in an indoor unit of the air conditioner 100. For an all-in-one air conditioner 100, the electric control box 200 can also be arranged in the all-in-one air conditioner 100. The present application is described by taking the electric control box 200 arranged in the outdoor unit of the air conditioner 100 as an example, but the electric control box 200 of the present application is not limited to being arranged in the outdoor unit of the air conditioner 100.

[0037] As can be understood from Figure 1 , the outdoor unit of the air conditioner 100 can comprise an appearance sheet metal part 30, a fan blade 40 and a middle partition plate 50. The appearance sheet metal part 30 can comprise a front panel 31, a top cover 32, a left surrounding panel (not shown in the figure), a bottom panel (not shown in the figure) and a right surrounding panel 33. The appearance sheet metal part 30 can define a mounting space, and the electric control box 200, the fan blade 40 and the middle partition plate 50 can all be arranged in the mounting space.

[0038] Optionally, in the height direction of the air conditioner 100 (i.e. the up-down direction as shown in Figure 2 , the middle partition plate 50 can be arranged below the electric control box 200, and the fan blade 40 can be arranged on one side of the heat sink 10. The air inlets 26 of the plurality of heat dissipation flow channels 21 defined by the support base 20 can be arranged on the other side of the heat sink 10. For example, in the left-right direction as shown in Figure 2 , the fan blade 40 can be arranged on the left side of the heat sink 10, and the air inlets 26 of the plurality of heat dissipation flow channels 21 defined by the support base 20 can be arranged on the right side of the heat sink 10.

[0039] The electric control box 200 can be provided with components 60, which can comprise circuit boards 61, terminals (not shown in the figure), capacitors (not shown in the figure) and other components. Optionally, in the height direction of the air conditioner 100 (i.e. the up-down direction as shown in Figure 3 , the circuit boards 61 can be arranged above the heat sink 10, and the capacitors can be arranged below the heat sink 10.Figure 3 As shown, the terminals and capacitors and the like can be arranged on the side of the heat sink 10 away from the fan blade 40 (i.e., the terminals and capacitors and the like can be arranged on the right side of the heat sink 10), and the heat sink 10 is used to dissipate heat from the components 60 in the electric control box 200.

[0040] In the prior art, the heat dissipation of the heat sink mainly relies on the hot air passing through the condenser to dissipate heat, so that the heat sink cannot reliably cool the components in the electric control box, resulting in a relatively low working life of the components in the electric control box, and the size of the components cannot be reduced, resulting in a relatively high manufacturing cost of the components.

[0041] In the present application, it can be understood that, as shown, Figure 2 As shown, when the fan blade 40 rotates at high speed, a high-speed negative pressure area 70 will be formed between the fan blade 40 and the heat sink 10 based on Bernoulli's principle, and under the traction of the high-speed negative pressure area 70, the air on the side of the heat sink 10 away from the fan blade 40 will flow to the high-speed negative pressure area 70, and the air on the side of the heat sink 10 away from the fan blade 40 will flow through the heat sink 10 through the plurality of heat dissipation flow channels 21 defined by the support seat 20, so as to cool the heat sink 10, thereby quickly cooling the heat sink 10, and enabling the heat sink 10 to reliably cool the components 60 in the electric control box 200, which is conducive to improving the working life of the components 60, and since the heat sink 10 can reliably cool the components 60 in the electric control box 200, the size of the components 60 does not need to be increased to meet the heat dissipation requirement, and the size of the components 60 can be reduced, which is conducive to reducing the manufacturing cost of the components 60.

[0042] Therefore, the plurality of heat dissipation flow channels 21 are defined by the support seat 20 of the electric control box 200, and when the fan blade 40 of the air conditioner 100 rotates, a high-speed negative pressure area 70 will be formed between the heat sink 10 and the fan blade 40, so that the air inside the air conditioner 100 will flow through the heat sink 10 through the plurality of heat dissipation flow channels 21, so as to cool the heat sink 10, so that the heat sink 10 can reliably cool the components 60 in the electric control box 200, so that the temperature of the components 60 in the electric control box 200 can always be within the appropriate working temperature range, which is conducive to improving the working life of the components 60, and the size of the components 60 can be reduced, thereby reducing the manufacturing cost of the components 60.

[0043] In some embodiments of the present application, as shown, Figures 2-5 The plurality of heat dissipation flow channels 21 can include a first flow channel 22 and a second flow channel 23, wherein, in the height direction of the air conditioner 100 (i.e., Figure 3As shown in the up-down direction), the first flow channel 22 can be located below the second flow channel 23, and the air outlets 27 of the first flow channel 22 and the second flow channel 23 can be arranged correspondingly to the heat sink 10.

[0044] Optionally, as Figure 3 shown, the support seat 20 can include a first support plate 24 and a second support plate 25, in the height direction of the air conditioner 100 (i.e. Figure 3 the up-down direction), the first support plate 24 can be located below the heat sink 10, and the first support plate 24 can be used to support and seal the heat sink 10, and the second support plate 25 can be located on the side of the heat sink 10 away from the fan blade 40, specifically, in Figure 3 the left-right direction, the second support plate 25 can be located on the right side of the heat sink 10, and terminals and capacitors and other devices can be arranged above the second support plate 25, and the second support plate 25 can protect the terminals and capacitors and other devices arranged above it.

[0045] Optionally, the support seat 20 can be a one-piece molded part, or the support seat 20 can also be formed by connecting multiple parts by welding or clamping or screwing, etc., and the present application does not limit this.

[0046] Among them, as Figure 1 shown, the partition plate 50 can include a first partition plate 51, which can divide the installation space into an air duct cavity 35 and a compressor cavity 36, specifically, in Figure 2 the left-right direction, the left side of the partition plate 50 can be the air duct cavity 35, and the right side of the partition plate 50 can be the compressor cavity 36, the fan blade 40 can be arranged in the air duct cavity 35, and the compressor of the air conditioner 100 can be arranged in the compressor cavity 36. Further, the support seat 20 can divide the compressor cavity 36 into a compressor side 37 and an electrical control side 38, in the height direction of the air conditioner 100, the compressor side 37 can be located below the electrical control side 38, the air inlet 26 of the first flow channel 22 can be arranged in communication with the compressor side 37, and the air inlet 26 of the second flow channel 23 can be arranged in communication with the electrical control side 38.

[0047] When the fan blade 40 rotates at high speed, based on Bernoulli's principle, a high-speed negative pressure zone 70 will be formed between the fan blade 40 and the heat sink 10, under the traction of the high-speed negative pressure zone 70, the air in the compressor side 37 can enter the first flow channel 22 through the air inlet 26 of the first flow channel 22, thereby flowing through the heat sink 10 to cool the heat sink 10 for a period of time, and under the traction of the high-speed negative pressure zone 70, the air in the electrical control side 38 can enter the second flow channel 23 through the air inlet 26 of the second flow channel 23, thereby flowing through the heat sink 10 to cool the heat sink 10 for a second period of time.

[0048] It needs to be understood that the first-stage cooling of the heat sink 10 is mainly for the lower half of the heat sink 10, and the second-stage cooling of the heat sink 10 is mainly for the upper half of the heat sink 10.

[0049] Therefore, the heat sink 10 can be cooled in multiple stages, so that the heat sink 10 can be quickly cooled, and the components 60 in the electric control box 200 can be reliably cooled. By arranging the first flow channel 22 below the second flow channel 23, the air in the first flow channel 22 and the air in the second flow channel 23 can be prevented from interfering with each other, and the air can quickly pass through the first flow channel 22 and the second flow channel 23 to cool the heat sink 10.

[0050] It can be understood that when the air in the electric control side 38 enters the second flow channel 23 through the air inlet 26 of the second flow channel 23, it can cool the terminals and capacitors arranged above the second support plate 25, and then the air in the electric control side 38 can flow through the heat sink 10 to cool the heat sink 10 in the second stage. This can prevent the temperature of the terminals and capacitors arranged above the second support plate 25 from being too high, which is beneficial to ensure the use reliability of the terminals and capacitors, and is also beneficial to improve the service life of the terminals and capacitors.

[0051] It needs to be emphasized that the heat sink 10 of the present application can also rely on the hot air passing through the condenser to cool, in other words, the heat sink 10 of the present application can rely on the hot air passing through the condenser to cool, and can also be pulled by the high-speed negative pressure area 70 to flow to the high-speed negative pressure area 70 on the side of the heat sink 10 away from the fan blade 40, so as to cool the heat sink 10, so that the heat sink 10 can be cooled more quickly.

[0052] As some embodiments of the present application, as shown in Figures 2-4 , in the left-right direction shown in Figure 3 , the first partition plate 51 can be located on the left side of the air inlet 26 of the first flow channel 22, and further, the first partition plate 51 can be located on the left side of the air inlets 26 of the plurality of heat dissipation flow channels 21. This arrangement can separate the air duct cavity 35 from the first flow channel 22 and the second flow channel 23, and can form a convection between the air duct cavity 35 and the first flow channel 22 and the second flow channel 23, thereby increasing the flow rate of the air and facilitating the cooling of the heat sink 10.

[0053] In some embodiments of the present application, as shown in Figures 2-4 , in the height direction of the electric control box 200, from Figure 3 to Figure 3As shown in the upper part, the first flow channel 22 can be arranged to extend upwardly and obliquely toward the radiator 10, and the second flow channel 23 can also be arranged to extend upwardly and obliquely toward the radiator 10. Such arrangement is beneficial to increase the air inlet amount of the first flow channel 22 and the second flow channel 23, so that the air inlet amount of the first flow channel 22 and the second flow channel 23 can be high, thereby ensuring that a large amount of air passes through the radiator 10, and the situation that the radiator 10 overheats and cannot cool the components 60 in the electric control box 200 can be avoided.

[0054] In some embodiments of the present application, as shown in Figure 4 the height direction of the first flow channel 22 (i.e. Figure 4 As shown in the up-down direction, the interval distance between the lowest point of the first flow channel 22 and the inner surface of the first flow channel 22 opposite to the lowest point can be K1, and the height of the radiator 10 can be H. The interval distance between the lowest point of the first flow channel 22 and the inner surface of the first flow channel 22 opposite to the lowest point and the height of the radiator 10 can satisfy the relationship 0.2H≤K1. That is, the interval distance between the lowest point of the first flow channel 22 and the inner surface of the first flow channel 22 opposite to the lowest point can be greater than or equal to 0.2 times the height of the radiator 10. The interval distance between the lowest point of the first flow channel 22 and the inner surface of the first flow channel 22 opposite to the lowest point can be understood as the minimum vertical distance of the first flow channel 22.

[0055] It can be understood that if K1 is too small, the first flow channel 22 will appear throttling phenomenon, thereby reducing the efficiency of gas flow in the first flow channel 22, and affecting the air inlet amount of the first flow channel 22. By configuring K1 and H to satisfy the relationship 0.2H≤K1, the value range of K1 can be reasonable, the throttling phenomenon of the first flow channel 22 can be avoided, the efficiency of gas flow in the first flow channel 22 can be improved, and the air inlet amount of the first flow channel 22 can be large. Of course, K1 also needs to consider the actual structure space limitation, in other words, K1 cannot be infinitely enlarged.

[0056] In some embodiments of the present application, as shown in Figure 4 the height direction of the first flow channel 22 (i.e. Figure 4(As shown in the vertical direction), the minimum distance between the lower surface and the upper surface of the second flow channel 23 can be K2, and the height of the heat sink 10 can be H. The minimum distance between the lower surface and the upper surface of the second flow channel 23 and the height of the heat sink 10 can satisfy the relationship 0.2H≤K2. That is, the minimum distance between the lower surface and the upper surface of the second flow channel 23 can be greater than or equal to 0.2 times the height of the heat sink 10. The minimum distance between the lower surface and the upper surface of the second flow channel 23 can be understood as the minimum vertical distance of the second flow channel 23.

[0057] Understandably, if K2 is too small, a throttling phenomenon will occur in the second flow channel 23, thereby reducing the efficiency of gas flow within the second flow channel 23 and affecting the air intake volume of the second flow channel 23. By constructing K2 and H to satisfy the relationship 0.2H≤K2, the value range of K2 can be made reasonable, avoiding the throttling phenomenon in the second flow channel 23, which is beneficial to improving the efficiency of gas flow within the first flow channel 22 and allowing for a larger air intake volume in the second flow channel 23. Of course, K2 also needs to take into account the actual structural space constraints; in other words, K2 cannot be infinitely enlarged. Furthermore, by constructing the second flow channel 23 as a variable cross-section flow channel, local gas backflow can be avoided, thus improving the gas flow efficiency.

[0058] Furthermore, by constructing K1 and H in a dimensional form that satisfies the inequality 0.2H≤K1, and by constructing K2 and H in a dimensional form that satisfies the inequality 0.2H≤K2, it can be ensured that the air intake of the first flow channel 22 and the second flow channel 23 can meet the heat dissipation requirements of the radiator 10 under minimum throttling conditions.

[0059] In some embodiments of the present invention, such as Figures 2-5 As shown, the support base 20 may include a rain shield 28, which may be disposed on one side of the radiator 10. Specifically, in Figure 4 In the left and right directions shown, the rain shield 28 can be set on the left side of the radiator 10. The distance between the rain shield 28 and the radiator 10 can be set to m. m and K1 and K2 can satisfy the relationship 0.5(K1+K2)≤m.

[0060] It is understandable that the rain shield 28 can be used to shield liquids (such as rainwater) to prevent liquids from entering the electrical control box 200. By setting the rain shield 28, the risk of liquid flowing into the electrical control box 200 can be reduced, which is conducive to ensuring the safety of the components 60 inside the electrical control box 200.

[0061] It should be noted that the greater the spacing distance between the rain baffle 28 and the heat sink 10, the better the heat dissipation effect of the heat sink 10. In addition, if the value of m is too small compared with the values of K1 and K2, the pressure at the air inlet 26 and the air outlet 27 of the first flow channel 22 and the second flow channel 23 will be unbalanced, which will affect the air intake of the first flow channel 22 and the second flow channel 23 and the efficiency of the gas flow in the first flow channel 22 and the second flow channel 23.

[0062] Therefore, by configuring m and K1 and K2 to satisfy the relationship 0.5(K1+K2)≤m, the values of m and K1 and K2 can be reasonable, the pressure at the air inlet 26 and the air outlet 27 of the first flow channel 22 and the second flow channel 23 can be balanced, the air intake of the first flow channel 22 and the second flow channel 23 can be large, and the efficiency of the gas flow in the first flow channel 22 and the second flow channel 23 can be high, thereby meeting the heat dissipation requirements of the heat sink 10.

[0063] In some embodiments of the present application, as shown in Figures 3-5 The support seat 20 can define a total flow channel, and the total flow channel can be provided with a partition plate 29, which can separate the total flow channel into the first flow channel 22 and the second flow channel 23. It can be understood that the first end of the first support plate 24 (i.e., the right end of the first support plate 24 in the left-right direction shown in Figure 3 The first end of the first support plate 24 and the partition plate 29 can jointly define the air inlet 26 of the first flow channel 22. Optionally, the first partition plate 51 can be located on the left side of the first end of the first support plate 24. This arrangement can separate the air duct cavity 35 from the first flow channel 22 and the second flow channel 23, and can form a convection between the air duct cavity 35 and the first flow channel 22 and the second flow channel 23, thereby increasing the flow rate of the air and facilitating the cooling of the heat sink 10.

[0064] It can be understood that the vertical distance between the first end of the first support plate 24 and the partition plate 29 is the spacing distance between the lowest point of the first flow channel 22 and the inner surface of the first flow channel 22 opposite to it.

[0065] In some embodiments of the present application, as shown in Figure 3 In the height direction of the electric control box 200 (i.e., the up-down direction shown in Figure 3 The projection of the lowest point of the upper surface of the second flow channel 23 can be located on the side of the projection of the lowest point of the partition plate 29 close to the heat sink 10. In other words, the projection of the lowest point of the upper surface of the second flow channel 23 can be located on the left side of the projection of the lowest point of the partition plate 29.

[0066] It should be noted that the gap 71 is provided between the partition plate 29 and the second support plate 25, when liquid (for example, rainwater) splashes from the right side of the heat sink 10 towards the heat sink 10, the liquid will gather on the outer wall surface of the second flow channel 23, and under the action of gravity, the liquid will drip from the outer wall surface of the second flow channel 23 to the surface of the partition plate 29, the liquid dripping to the surface of the partition plate 29 can drip to the gap 71 between the partition plate 29 and the second support plate 25 under the action of gravity, and the liquid dripping from the surface of the partition plate 29 can exit the electric control box 200 through the gap 71. The arrangement can further reduce the risk of liquid flowing into the interior of the electric control box 200, and is beneficial to ensure the use safety of the components 60 in the interior of the electric control box 200.

[0067] In some embodiments of the present application, as shown in Figure 3 the height direction of the electric control box 200 (i.e. Figure 3 the up-down direction shown in the figure), the highest point of the partition plate 29 can be located above the lowest point of the upper surface of the second flow channel 23, which can avoid water mist flowing to the circuit board 61 through the second flow channel 23, and can avoid the circuit board 61 from malfunctioning due to the influence of water mist, so that the electric control box 200 can have good waterproof performance.

[0068] In some embodiments of the present application, as shown in Figure 4 the height direction of the electric control box 200 (i.e. Figure 4 the up-down direction shown in the figure), the interval distance between the highest point of the partition plate 29 and the heat sink 10 can be Hn, the height of the heat sink 10 can be H, and the interval distance between the highest point of the partition plate 29 and the heat sink 10 and the height of the heat sink 10 can satisfy the relationship 0.4H≤Hn≤0.6H. That is, the interval distance between the highest point of the partition plate 29 and the heat sink 10 can be greater than or equal to 0.4 times the height of the heat sink 10, and the interval distance between the highest point of the partition plate 29 and the heat sink 10 can also be less than or equal to 0.6 times the height of the heat sink 10.

[0069] It can be understood that the interval distance between the highest point of the partition plate 29 and the heat sink 10 represents the flow distribution of the first flow channel 22 and the second flow channel 23, and too large or too small interval distance between the highest point of the partition plate 29 and the heat sink 10 will result in too low air intake of the first flow channel 22 or the second flow channel 23.

[0070] For example, if the interval distance between the highest point of the partition plate 29 and the heat sink 10 is too small, the air inlet amount of the first flow channel 22 will be too low, which will result in poor cooling of the lower half of the heat sink 10. If the interval distance between the highest point of the partition plate 29 and the heat sink 10 is too large, the air inlet amount of the second flow channel 23 will be too low, which will result in poor cooling of the upper half of the heat sink 10.

[0071] By configuring Hn and H to satisfy the relationship 0.4H≤Hn≤0.6H, the value range of Hn can be reasonable, and the flow distribution of the first flow channel 22 and the second flow channel 23 can be reasonable, so that the cooling effect of the lower half of the heat sink 10 can be better, and the cooling effect of the upper half of the heat sink 10 can be better.

[0072] In some embodiments of the present application, as shown in Figure 3 and Figure 4 In the extension direction of the first flow channel 22, the two ends of the first flow channel 22 can be respectively provided with an air outlet 27 and an air inlet 26, and in the direction from the air inlet 26 of the first flow channel 22 to the air outlet 27 of the first flow channel 22, the cross-sectional area of the first flow channel 22 can gradually increase.

[0073] It should be explained that, in the direction from the air inlet 26 of the first flow channel 22 to the air outlet 27 of the first flow channel 22, by configuring the cross-sectional area of the first flow channel 22 to gradually increase, the air inlet amount of the first flow channel 22 can be improved, so that more air can pass through the lower half of the heat sink 10, and the lower half of the heat sink 10 can be effectively cooled.

[0074] In some embodiments of the present application, as shown in Figure 3 and Figure 4 In the extension direction of the second flow channel 23, the two ends of the second flow channel 23 can be respectively provided with an air outlet 27 and an air inlet 26, and in the direction from the air inlet 26 of the second flow channel 23 to the air outlet 27 of the second flow channel 23, the cross-sectional area of the second flow channel 23 can first gradually decrease and then gradually increase.

[0075] It needs to be explained that, from the air inlet 26 of the second flow channel 23 to the air outlet 27 of the second flow channel 23, by setting the cross-sectional area of the second flow channel 23 to gradually decrease first and then gradually increase, based on the Bernoulli equation (i.e. static pressure + dynamic pressure = constant), when the air enters into the second flow channel 23 from the air inlet 26 of the second flow channel 23, it will go through two stages, in the first stage, because the cross-sectional area of the second flow channel 23 gradually decreases, the flow rate of the air will become larger (at this time, the dynamic pressure of the air increases, and the static pressure decreases), which can make more air enter into the second flow channel 23.

[0076] In the second stage, because the cross-sectional area of the second flow channel 23 gradually increases, the flow rate of the air will decrease, and the static pressure of the air will increase, the increase of the static pressure can avoid the local backflow phenomenon, and can improve the air flow efficiency, so that the air can be fully exchanged with the upper half of the radiator 10, and the upper half of the radiator 10 can be effectively cooled and radiated.

[0077] According to the air conditioner 100 of the embodiment of the present application, the electric control box 200 of the air conditioner 100 of the above-mentioned embodiment, a plurality of heat dissipation flow channels 21 are defined by the support seat 20 of the electric control box 200, when the fan blade 40 of the air conditioner 100 rotates, the high-speed negative pressure area 70 is formed between the radiator 10 and the fan blade 40, so that the air in the air conditioner 100 flows through the radiator 10 through the plurality of heat dissipation flow channels 21, to cool and radiate the radiator 10, so that the radiator 10 can reliably cool the components 60 in the electric control box 200, so that the temperature of the components 60 in the electric control box 200 is always within the appropriate working temperature range, which is beneficial to improve the working life of the components 60, and the size of the components 60 can be reduced, so that the manufacturing cost of the components 60 can be reduced.

[0078] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0079] In the description of the present application, "first feature" and "second feature" can include one or more features.

[0080] In the description of the present application, "a plurality of" means two or more.

[0081] In the description of the application, a first feature being "on", "above", or "on top" of a second feature can include the first and second features being directly in contact, or the first and second features not being directly in contact but being in contact through another feature between them.

[0082] In the description of the application, a first feature being "on", "above", and "on top" of a second feature includes the first feature being directly on, above, and on top of the second feature, or only indicating that the first feature is horizontally higher than the second feature.

[0083] In the description of the application, the description of the reference terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. In the description of the application, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0084] Although the embodiments of the application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the application, and the scope of the application is defined by the claims and their equivalents.

Claims

1. An electrical control box for an air conditioner, characterized by comprising: The air conditioner comprises: a heat sink; a support base, wherein the heat sink is mounted on the support base, the support base defines a plurality of heat dissipation channels, the plurality of heat dissipation channels are arranged in sequence in the height direction of the electric control box, and the air outlets of at least two of the plurality of heat dissipation channels correspond to the heat sink; the plurality of heat dissipation channels comprise a first channel and a second channel, and the first channel is located below the second channel; in the direction from the bottom to the top of the electric control box, the first channel and the second channel both extend upwardly and upwardly towards the heat sink; the air inside the press machine side enters the first channel through the air inlet of the first channel to dissipate heat from the lower half of the heat sink; the air inside the electric control side enters the second channel through the air inlet of the second channel to dissipate heat from the upper half of the heat sink.

2. The electric control box of an air conditioner according to claim 1, wherein In the height direction of the first channel, the distance between the lowest point of the first channel and the inner surface of the first channel opposite to the lowest point is K1, the height of the heat sink is H, and the relationship 0.2H≤K1 is satisfied.

3. The electric control box of an air conditioner according to claim 2, wherein The second channel is configured as a variable cross-section channel, and in the height direction of the second channel, the minimum distance between the lower surface and the upper surface of the second channel is K2, and the relationship 0.2H≤K2 is satisfied.

4. The electric control box of an air conditioner according to claim 3, wherein The support base comprises a rain shield, the rain shield is arranged on one side of the heat sink, the distance between the rain shield and the heat sink is m, and the relationship 0.5(K1+K2)≤m is satisfied.

5. The electric control box of an air conditioner according to claim 1, wherein The support base defines a total channel, and a partition plate is arranged in the total channel, the partition plate separates the total channel into the first channel and the second channel.

6. The electrical control box of an air conditioner according to claim 5, wherein In the height direction of the electric control box, the projection of the lowest point of the upper surface of the second channel is located on the side close to the heat sink of the projection of the lowest point of the partition plate.

7. The electrical control box of claim 5, wherein, In the height direction of the electric control box, the highest point of the partition plate is located above the lowest point of the upper surface of the second channel.

8. The electrical control box of claim 5, wherein, In the height direction of the electric control box, the distance between the highest point of the partition plate and the heat sink is Hn, the height of the heat sink is H, and the relationship 0.4H≤Hn≤0.6H is satisfied.

9. The electric control box of an air conditioner according to claim 1, wherein In the extension direction of the first channel, the air inlet and the air outlet are arranged at the two ends of the first channel respectively, and the cross-sectional area of the first channel gradually increases in the direction from the air inlet to the air outlet.

10. The electric control box of an air conditioner according to claim 1, wherein In the extension direction of the second channel, the air inlet and the air outlet are arranged at the two ends of the second channel respectively, and the cross-sectional area of the second channel gradually decreases and then gradually increases in the direction from the air inlet to the air outlet.

11. An air conditioner characterized by comprising: The electric control box of the air conditioner according to any one of claims 1-10.

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