CN115727402A - Air conditioner and electric control box thereof - Google Patents

Abstract

The invention discloses an electric control box of an air conditioner and the air conditioner, the electric control box of the air conditioner comprises: a heat sink; the supporting seat is installed in the supporting seat, and a plurality of heat dissipation runners are injectd to the supporting seat, and a plurality of heat dissipation runners arrange in proper order in the direction of height of automatically controlled box, and the air outlet of two at least heat dissipation runners among a plurality of heat dissipation runners corresponds with the radiator. From this, a plurality of heat dissipation runners are injectd through the supporting seat of automatically controlled box, when the fan blade of air conditioner rotates, can form high-speed negative pressure zone between radiator and the fan blade, thereby can make the inside air of air conditioner flow through the radiator through a plurality of heat dissipation runners, with the heat dissipation of cooling to the radiator, so that the components and parts in the automatically controlled box of cooling that the radiator can be reliable, thereby can make the temperature of the components and parts in the automatically controlled box be in suitable operating temperature interval all the time, be favorable to improving the life of components and parts, and, can reduce the size of components and parts, thereby can reduce the manufacturing cost of components and parts.

Description

Air conditioner and electric control box thereof

Technical Field

The invention relates to the field of air conditioners, in particular to an electric control box of an air conditioner and the air conditioner with the electric control box of the air conditioner.

Background

In the related art, a radiator is arranged in an electric control box of the air conditioner and used for cooling components (such as a circuit board, a capacitor, a terminal and the like) in the electric control box, however, the overfire air heat dissipation of the radiator mainly depends on the hot air passing through a condenser to cool and dissipate the heat, so that the components in the electric control box can not be reliably cooled by the radiator, the service life of the components in the electric control box is short, the size of the components can not be reduced, and the manufacturing cost of the components is high.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide an electric control box of an air conditioner, which enables a heat sink to reliably cool components in the electric control box, so that the temperature of the components in the electric control box is always within an appropriate working temperature range, which is beneficial to improving the service life of the components, and the size of the components can be reduced, thereby reducing the manufacturing cost of the components.

The invention further provides an air conditioner.

The electric control box of the air conditioner according to the present invention comprises: a heat sink; the supporting seat, the radiator install in the supporting seat, a plurality of heat dissipation runners are injectd to the supporting seat, and are a plurality of the heat dissipation runner is in the direction of height of automatically controlled box arranges in proper order, and is a plurality of at least two among the heat dissipation runner the air outlet of heat dissipation runner with the radiator corresponds.

According to the electric control box of the air conditioner, the supporting seat of the electric control box limits the plurality of heat dissipation flow channels, when the fan blade of the air conditioner rotates, a high-speed negative pressure area is formed between the heat radiator and the fan blade, so that air in the air conditioner can flow through the heat radiator through the plurality of heat dissipation flow channels to cool and dissipate heat of the heat radiator, the heat radiator can reliably cool components in the electric control box, the temperature of the components in the electric control box can be always in a proper working temperature range, the working life of the components can be prolonged, the size of the components can be reduced, and the manufacturing cost of the components can be reduced.

In some examples of the invention, the plurality of heat dissipation flow channels includes: the first flow channel is positioned below the second flow channel.

In some examples of the present invention, the first flow passage and the second flow passage each extend obliquely upward toward the heat sink from below to above of the electronic control box.

In some examples of the present invention, 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 thereto is K1, a height of the heat sink is H, and a relation is satisfied: k1 is less than or equal to 0.2H.

In some examples of the present invention, the second flow channel is configured as a variable cross-section flow channel, and a minimum distance between a lower surface and an upper surface of the second flow channel in a height direction of the second flow channel is K2, and satisfies a relation: k2 is less than or equal to 0.2H.

In some examples of the invention, the support base comprises: the rain baffle, the rain baffle is located one side of radiator, the rain baffle with the interval distance between the radiator is m, satisfies the relational expression: 0.5 M is less than or equal to (K1 + K2).

In some examples of the invention, the support base defines a total flow passage, and a partition plate is disposed in the total flow passage and divides the total flow passage into the first flow passage and the second flow passage.

In some examples of the invention, in the height direction of the electronic control box, the projection of the lowest point of the upper surface of the second flow passage is located on the side of the projection of the lowest point of the partition plate close to the radiator.

In some examples of the present invention, in a height direction of the electronic control box, a highest point of the partition plate is located above a lowest point of an upper surface of the second flow path.

In some examples of the present invention, in the height direction of the electronic 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 relation is satisfied: hn is more than or equal to 0.4H and less than or equal to 0.6H.

In some examples of the present invention, in an extending direction of the first flow channel, the air outlet and the air inlet are respectively disposed at two ends of the first flow channel, and a cross-sectional area of the first flow channel gradually increases from the air inlet to the air outlet.

In some examples of the present invention, in an extending direction of the second flow channel, the air outlet and the air inlet are respectively disposed at two ends of the second flow channel, and a sectional area of the second flow channel gradually decreases and then gradually increases from the air inlet to the air outlet.

The air conditioner comprises the electric control box of the air conditioner.

Additional aspects and advantages of the invention 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 invention.

Drawings

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

fig. 1 is an exploded view of an outdoor unit of an air conditioner according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of an electric control box, a fan blade and a partition plate according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of an electrical cassette and a midplate according to an embodiment of the present invention;

FIG. 4 is another cross-sectional view of an electrical control pod and a midplate according to an embodiment of the present invention;

fig. 5 is a schematic diagram of an electronic control box according to an embodiment of the invention.

Reference numerals:

an air conditioner 100; an electronic control box 200;

a heat sink 10;

a support base 20; a heat dissipation flow channel 21; a first flow passage 22; a second flow passage 23; a first support plate 24; a second support plate 25; an air inlet 26; an air outlet 27; a rain shield 28; a partition plate 29;

an appearance sheet metal part 30; a front panel 31; a top cover 32; a right shroud 33; an air duct cavity 35; a press cavity 36; the press side 37; an electrical control side 38;

a fan blade 40; a middle partition plate 50; a first partition plate 51; a component 60; a circuit board 61; a high speed negative pressure region 70; and a notch 71.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.

An electric control box 200 of an air conditioner 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 5.

As shown in fig. 1 to 5, an electronic control box 200 according to an embodiment of the present invention includes: a heat sink 10 and a support base 20.

The heat sink 10 is disposed on the support base 20, the support base 20 can define a plurality of heat dissipation flow channels 21, the heat dissipation flow channels 21 are sequentially arranged in a height direction (i.e., an up-down direction shown in fig. 2) of the electronic control box 200, and the air outlets 27 of at least two heat dissipation flow channels 21 are disposed corresponding to the heat sink 10 in the heat dissipation flow channels 21.

Alternatively, the electrical control box 200 may be disposed in an outdoor unit of the air conditioner 100, of course, the electrical control box 200 may also be disposed in an indoor unit of the air conditioner 100, for the integrated air conditioner 100, the electrical control box 200 may also be disposed in the integrated air conditioner 100, and the present application describes the electrical control box 200 disposed in the outdoor unit of the air conditioner 100 as an example, but the electrical control box 200 of the present application is not limited to be disposed in the outdoor unit of the air conditioner 100.

It is understood that, as shown in fig. 1, the outdoor unit of the air conditioner 100 may include an appearance sheet metal member 30, a fan blade 40, and a partition plate 50, and the appearance sheet metal member 30 may include: the front panel 31, the top cover 32, the left enclosing plate (not shown), the bottom plate (not shown) and the right enclosing plate 33, the appearance sheet metal part 30 can define an installation space, and the electric control box 200, the fan blades 40 and the middle partition plate 50 can be arranged in the installation space.

Alternatively, the middle partition 50 may be disposed below the electrical control box 200 in a height direction (i.e., an up-down direction shown in fig. 2) of the air conditioner 100, the fan blades 40 may be disposed on one side of the heat sink 10, and the air inlets 26 of the plurality of heat dissipation flow paths 21 defined by the support base 20 may be disposed on the other side of the heat sink 10. For example, in the left-right direction shown in fig. 2, the fan blade 40 may be disposed on the left side of the heat sink 10, and the air inlets 26 of the plurality of heat dissipation flow passages 21 defined by the support base 20 may be disposed on the right side of the heat sink 10.

The electronic control box 200 may be provided therein with a component 60, where the component 60 may include devices such as a circuit board 61, a terminal (not shown in the figure) and a capacitor (not shown in the figure), and optionally, in a height direction of the air conditioner 100 (i.e., an up-down direction shown in fig. 3), the circuit board 61 may be disposed above the heat sink 10, and in a left-right direction shown in fig. 3, the devices such as the terminal and the capacitor may be disposed on a side of the heat sink 10 away from the fan blade 40 (i.e., the devices such as the terminal and the capacitor may be disposed on a right side of the heat sink 10), and the heat sink 10 is configured to dissipate heat of the component 60 in the electronic control box 200.

In the prior art, the overfire air heat dissipation of the radiator mainly depends on the hot air passing through the condenser for cooling and heat dissipation, so that the radiator can not reliably cool components in the electric control box, the service life of the components in the electric control box is short, the size of the components can not be reduced, and the manufacturing cost of the components is high.

In the present application, it can be understood that, as shown in fig. 2, when the fan blade 40 rotates at a high speed, based on bernoulli's principle, a high-speed negative pressure region 70 is formed between the fan blade 40 and the heat sink 10, under the traction of the high-speed negative pressure region 70, air on a side of the heat sink 10 away from the fan blade 40 flows toward the high-speed negative pressure region 70, a plurality of heat dissipation flow channels 21 are defined by the support base 20, and air on a side of the heat sink 10 away from the fan blade 40 flows through the heat sink 10 through the plurality of heat dissipation flow channels 21 to cool and dissipate heat of the heat sink 10, so that the heat sink 10 can be cooled and dissipated quickly, the heat sink 10 can reliably cool the components 60 in the electronic control box 200, which is beneficial to improving the service life of the components 60, and the heat dissipation requirement is not required to increase the size of the components 60, the size of the components 60 can be reduced, and the manufacturing cost of the components 60 can be reduced.

Therefore, a plurality of heat dissipation flow channels 21 are defined through the support base 20 of the electric control box 200, when the fan blade 40 of the air conditioner 100 rotates, a high-speed negative pressure region 70 is formed between the radiator 10 and the fan blade 40, so that air inside the air conditioner 100 flows through the radiator 10 through the plurality of heat dissipation flow channels 21, the radiator 10 is cooled and dissipated, the radiator 10 can reliably cool the components 60 in the electric control box 200, the temperature of the components 60 in the electric control box 200 can be always within a proper working temperature range, the service life of the components 60 is prolonged, the size of the components 60 can be reduced, and the manufacturing cost of the components 60 can be reduced.

In some embodiments of the present invention, as shown in fig. 2 to 5, the plurality of heat dissipation flow channels 21 may include a first flow channel 22 and a second flow channel 23, wherein, in a height direction of the air conditioner 100 (i.e., an up-down direction shown in fig. 3), the first flow channel 22 may 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 may be both disposed corresponding to the heat sink 10.

Alternatively, as shown in fig. 3, the support base 20 may include a first support plate 24 and a second support plate 25, in a height direction (i.e., a vertical direction shown in fig. 3) of the air conditioner 100, the first support plate 24 may be located below the heat sink 10, the first support plate 24 may be used to support and seal the heat sink 10, the second support plate 25 may be located on a side of the heat sink 10 away from the fan blade 40, specifically, in a left-right direction shown in fig. 3, the second support plate 25 may be located on a right side of the heat sink 10, a terminal, a capacitor, and other devices may be disposed above the second support plate 25, and the second support plate 25 may protect the terminal, the capacitor, and other devices disposed above the second support plate 25.

Alternatively, the supporting seat 20 may be an integrally formed part, or the supporting seat 20 may also be formed by connecting a plurality of parts by welding, clamping, screwing, or the like, which is not limited in this application.

As shown in fig. 1, the middle partition plate 50 may include a first partition plate 51, the first partition plate 51 may divide the installation space into the air duct cavity 35 and the press cavity 36, specifically, in the left-right direction shown in fig. 2, the left side of the middle partition plate 50 may be the air duct cavity 35, the right side of the middle partition plate 50 may be the press cavity 36, the fan blade 40 may be disposed in the air duct cavity 35, and the compressor of the air conditioner 100 may be disposed in the press cavity 36. Further, the supporting seat 20 may divide the press cavity 36 into a press side 37 and an electric control side 38, the press side 37 may be located below the electric control side 38 in the height direction of the air conditioner 100, the air inlet 26 of the first flow passage 22 may be disposed to communicate with the press side 37, and the air inlet 26 of the second flow passage 23 may be disposed to communicate with the electric control side 38.

When the fan blade 40 rotates at a high speed, based on the bernoulli principle, a high-speed negative pressure region 70 is formed between the fan blade 40 and the radiator 10, under the traction of the high-speed negative pressure region 70, air in the press side 37 can enter the first flow channel 22 through the air inlet 26 of the first flow channel 22, and can flow through the radiator 10 to perform one-section cooling and heat dissipation on the radiator 10, and under the traction of the high-speed negative pressure region 70, air in the electric control side 38 can enter the second flow channel 23 through the air inlet 26 of the second flow channel 23, and can flow through the radiator 10 to perform two-section cooling and heat dissipation on the radiator 10.

It should be understood that the first cooling and heat dissipation of the heat sink 10 mainly includes heat dissipation of the lower half of the heat sink 10, and the second cooling and heat dissipation of the heat sink 10 mainly includes heat dissipation of the upper half of the heat sink 10.

From this, can carry out the multistage cooling heat dissipation to radiator 10 to can cool down the heat dissipation to radiator 10 fast, can make radiator 10 can be reliable the cooling components and parts 60 in the automatically controlled box 200, and, through setting up first runner 22 in second runner 23 below, can avoid the air in first runner 22 and the air in the second runner 23 to interfere with each other, can make the air can pass through first runner 22 and second runner 23 fast in order to cool down the heat dissipation to radiator 10.

It can be understood that, when the air in the electrical control side 38 enters the second flow channel 23 through the air inlet 26 of the second flow channel 23, the air can cool and dissipate the devices such as the terminal and the capacitor disposed above the second support plate 25, and then the air in the electrical control side 38 can flow through the heat sink 10 to cool and dissipate the heat of the heat sink 10 for the second time. Therefore, the temperature of the terminal, the capacitor and other devices arranged above the second supporting plate 25 is prevented from being too high, the use reliability of the terminal, the capacitor and other devices is guaranteed, and the service life of the terminal, the capacitor and other devices is prolonged.

It should be emphasized that, the heat sink 10 of the present application may also rely on the hot air passing through the condenser to perform cooling and heat dissipation, in other words, the heat sink 10 of the present application may rely on the hot air passing through the condenser to perform cooling and heat dissipation, and under the traction of the high-speed negative pressure region 70, the air of the heat sink 10 far away from the fan blade 40 flows to the high-speed negative pressure region 70, so as to perform cooling and heat dissipation on the heat sink 10, thereby performing cooling and heat dissipation on the heat sink 10 more quickly.

As some embodiments of the present invention, as shown in fig. 2 to 4, in the left-right direction shown in fig. 3, the first partition plate 51 may be located on the left side of the air inlet 26 of the first flow channel 22, and further, the first partition plate 51 may be located on the left side of the plurality of air inlets 26 of the plurality of heat dissipation flow channels 21, such that the air duct cavity 35 may be separated from the first flow channel 22 and the second flow channel 23, and convection may be formed between the air duct cavity 35 and the first flow channel 22 and the second flow channel 23, so as to increase the flow rate of air, which is beneficial to cooling and heat dissipation of the heat sink 10.

In some embodiments of the present invention, as shown in fig. 2 to 4, in the height direction of the electronic control box 200, from the lower side shown in fig. 3 to the upper side shown in fig. 3, the first flow channel 22 may extend obliquely upward toward the heat sink 10, and the second flow channel 23 may also extend obliquely upward toward the heat sink 10, so that the arrangement is beneficial to increase the intake amount of the first flow channel 22 and the second flow channel 23, and the intake amount of the first flow channel 22 and the second flow channel 23 may be made higher, so that a large amount of air may be ensured to pass through the heat sink 10, and the situation that the heat sink 10 is overheated and cannot cool down the components 60 in the electronic control box 200 may be avoided.

In some embodiments of the present invention, as shown in fig. 4, in the height direction of the first flow channel 22 (i.e., the up-down direction shown in fig. 4), the spacing distance between the lowest point of the first flow channel 22 and the inner surface of the first flow channel 22 opposite thereto may be K1, and the height of the heat sink 10 may be H, and the spacing distance between the lowest point of the first flow channel 22 and the inner surface of the first flow channel 22 opposite thereto and the height of the heat sink 10 may satisfy the relationship of 0.2H ≦ K1. That 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 thereto may be greater than or equal to 0.2 times the height of the heat sink 10. Here, the spacing distance between the lowest point of the first flow channel 22 and the inner surface of the first flow channel 22 opposite thereto may be understood as the minimum vertical distance of the first flow channel 22.

It can be understood that if K1 is too small, the first flow channel 22 will generate a throttling phenomenon, so as to reduce the efficiency of the gas flowing in the first flow channel 22 and influence the air intake rate of the first flow channel 22, and by configuring K1 and H to satisfy the relation 0.2H ≦ K1, the value range of K1 can be reasonable, the throttling phenomenon of the first flow channel 22 can be avoided, which is beneficial to improving the efficiency of the gas flowing in the first flow channel 22, and the air intake rate of the first flow channel 22 can be larger. Of course, K1 also needs to take into account practical structural space constraints, in other words, K1 cannot be enlarged indefinitely.

In some embodiments of the present invention, as shown in fig. 4, the second flow passage 23 may be configured as a variable cross-section flow passage, and, in a height direction of the second flow passage 23 (i.e., an up-down direction shown in fig. 4), a minimum spacing distance between a lower surface of the second flow passage 23 and an upper surface of the second flow passage 23 may be K2, and a height of the heat sink 10 may be H, and the minimum spacing distance between the lower surface of the second flow passage 23 and the upper surface of the second flow passage 23 and the height of the heat sink 10 may satisfy a relation of 0.2H ≦ K2. That is, the minimum spaced distance between the lower surface of the second flow channel 23 and the upper surface of the second flow channel 23 may be greater than or equal to 0.2 times the height of the heat sink 10. Herein, the minimum spaced distance between the lower surface of the second flow channel 23 and the upper surface of the second flow channel 23 may be understood as the minimum vertical distance of the second flow channel 23.

It can be understood that if K2 is too small, the second flow channel 23 will have a throttling phenomenon, so that the efficiency of gas flow in the second flow channel 23 can be reduced, and the air intake of the second flow channel 23 can be affected, and by constructing K2 and H to satisfy the relation 0.2H ≤ K2, the value range of K2 can be reasonable, the throttling phenomenon in the second flow channel 23 can be avoided, which is beneficial to improving the efficiency of gas flow in the first flow channel 22, and the air intake of the second flow channel 23 can be larger. Of course, K2 also needs to be comprehensively considered for practical structural space limitations, in other words, K2 cannot be infinitely enlarged. Also, by configuring the second flow passage 23 as a variable cross-section flow passage, a local backflow phenomenon of gas can be prevented, and the circulation efficiency of gas can be improved.

Further, by configuring K1 and H to satisfy the inequality 0.2H ≦ K1, and by configuring K2 and H to satisfy the inequality 0.2H ≦ K2, it is ensured that the intake air volume of the first flow passage 22 and the second flow passage 23 can satisfy the heat dissipation requirement of the radiator 10 under the minimum throttling condition.

In some embodiments of the present invention, as shown in fig. 2-5, the support base 20 may include: the rain shield 28, the rain shield 28 may be disposed on one side of the radiator 10, specifically, in the left-right direction shown in fig. 4, the rain shield 28 may be disposed on the left side of the radiator 10, the spacing distance between the rain shield 28 and the radiator 10 may be configured as m, and m and K1, K2 may satisfy the relation 0.5 (K1 + K2) m.

It can be understood that the rain shielding plate 28 can be used to shield liquid (e.g., rain water) from entering the electronic control box 200, and by providing the rain shielding plate 28, the risk of liquid flowing into the electronic control box 200 can be reduced, which is beneficial to ensuring the safety of the components 60 inside the electronic control box 200.

Moreover, it should be noted that the larger the distance between the rain shielding plate 28 and the heat sink 10 is, the better the heat dissipation and cooling effects of the heat sink 10 are, and in addition, if the value of m is smaller than the values of K1 and K2, the pressure imbalance at the air inlet 26 and the air outlet 27 of the first flow channel 22 and the second flow channel 23 may be caused, so as to affect the air intake rate of the first flow channel 22 and the second flow channel 23, and also affect the efficiency of the air flow in the first flow channel 22 and the second flow channel 23.

Therefore, m, K1 and K2 are constructed to satisfy the relationship 0.5 (K1 + K2) less than or equal to m, so that the values of m, K1 and K2 are reasonable, pressure imbalance at the air inlet 26 and the air outlet 27 of the first flow channel 22 and the second flow channel 23 can be avoided, the air inlet volume of the first flow channel 22 and the second flow channel 23 can be increased, the efficiency of air flowing in the first flow channel 22 and the second flow channel 23 can be increased, and the heat dissipation requirement of the heat sink 10 can be met.

In some embodiments of the present invention, as shown in fig. 3-5, the support base 20 may define a main flow passage, a partition plate 29 may be disposed in the main flow passage, and the partition plate 29 may partition the main flow passage into the first flow passage 22 and the second flow passage 23, which may be disposed to define the first flow passage 22 and the second flow passage 23. Moreover, it is 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 fig. 3) and the partition plate 29 may jointly define the air inlet 26 of the first flow channel 22, and optionally, the first partition plate 51 may be located on the left side of the first end of the first support plate 24, so as to separate the air duct cavity 35 from the first flow channel 22 and the second flow channel 23, and enable convection between the air duct cavity 35 and the first flow channel 22 and the second flow channel 23, so as to increase the flow rate of air, and facilitate cooling and heat dissipation of the heat sink 10.

It will be appreciated 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 thereto.

In some embodiments of the present invention, as shown in fig. 3, in the height direction of the electronic control box 200 (i.e., the up-down direction shown in fig. 3), the projection of the lowest point of the upper surface of the second flow channel 23 may 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 second flow passage 23 may be located on the left side of the projection of the lowest point of partition plate 29.

It should be noted that, since there is the notch 71 between the partition plate 29 and the second support plate 25, when liquid (for example, rainwater) splashes toward the radiator 10 from the right side of the radiator 10, the liquid collects on the outer wall surface of the second flow passage 23, and the liquid drops on the surface of the partition plate 29 from the outer wall surface of the second flow passage 23 under the action of gravity, the liquid dropping on the surface of the partition plate 29 can drop between the partition plate 29 and the second support plate 25 under the action of gravity, and since there is the notch 71 between the partition plate 29 and the second support plate 25, the liquid dropping on the surface of the partition plate 29 can leave the electronic control box 200 through the notch 71. The arrangement can further reduce the risk of liquid flowing into the electric control box 200, and is favorable for ensuring the use safety of the components 60 in the electric control box 200.

In some embodiments of the present invention, as shown in fig. 3, in the height direction of the electronic control box 200 (i.e., the up-down direction shown in fig. 3), the highest point of the partition plate 29 may be located above the lowest point of the upper surface of the second flow channel 23, so that the arrangement may prevent the water mist from flowing onto the circuit board 61 through the second flow channel 23, and may prevent the circuit board 61 from being affected by the water mist to malfunction, thereby enabling the electronic control box 200 to have good waterproof performance.

In some embodiments of the present invention, as shown in fig. 4, in the height direction of electrical control box 200 (i.e., the up-down direction shown in fig. 4), the spacing distance between the highest point of partition plate 29 and heat sink 10 may be Hn, the height of heat sink 10 may be H, and the spacing distance between the highest point of partition plate 29 and heat sink 10 and the height of heat sink 10 may satisfy the relation 0.4H ≦ Hn ≦ 0.6H. That is, the spacing distance between the highest point of partition plate 29 and heat sink 10 may be greater than or equal to 0.4 times the height of heat sink 10, and the spacing distance between the highest point of partition plate 29 and heat sink 10 may also be less than or equal to 0.6 times the height of heat sink 10.

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

For example, if the distance between the highest point of partition 29 and heat sink 10 is too small, the amount of air taken through first flow channel 22 will be too low, which will result in poor cooling and heat dissipation of a section of heat sink 10 (i.e. poor cooling and heat dissipation of the lower half of heat sink 10). If the distance between the highest point of partition plate 29 and heat sink 10 is too large, the intake air volume of second flow channel 23 will be too low, and the second section of heat sink 10 will have poor cooling and heat dissipation (i.e. the upper half of heat sink 10 will have poor cooling and heat dissipation).

By constructing Hn and H to satisfy the relation 0.4H ≤ Hn ≤ 0.6H, the range of Hn can be made reasonable, and the flow distribution of the first flow channel 22 and the second flow channel 23 can be made reasonable, so that the lower half of the heat sink 10 has a better cooling and heat dissipating effect, and the upper half of the heat sink 10 has a better cooling and heat dissipating effect.

In some embodiments of the present invention, as shown in fig. 3 and 4, in the extending direction of the first flow channel 22, the two ends of the first flow channel 22 may be respectively provided with an air outlet 27 and an air inlet 26, and the cross-sectional area of the first flow channel 22 may gradually increase from the air inlet 26 of the first flow channel 22 to the air outlet 27 of the first flow channel 22.

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, the sectional area of the first flow channel 22 is gradually increased, so that the air intake of the first flow channel 22 can be increased, and thus, more air can pass through the lower half portion of the heat sink 10, and effective cooling and heat dissipation can be performed on the lower half portion of the heat sink 10.

In some embodiments of the present invention, as shown in fig. 3 and fig. 4, in an extending direction of the second flow channel 23, an air outlet 27 and an air inlet 26 may be respectively disposed at two ends of the second flow channel 23, and a cross-sectional area of the second flow channel 23 may gradually decrease and then gradually increase from the air inlet 26 of the second flow channel 23 to the air outlet 27 of the second flow channel 23.

It should be explained that, by setting the sectional area of the second flow channel 23 to gradually decrease and then gradually increase from the air inlet 26 of the second flow channel 23 to the air outlet 27 of the second flow channel 23, based on the bernoulli equation (i.e. static pressure + dynamic pressure = constant), when the air enters the second flow channel 23 from the air inlet 26 of the second flow channel 23, two stages are performed, and in the first stage, because the sectional area of the second flow channel 23 is gradually decreased, the flow rate of the air is increased (at this time, the dynamic pressure of the air is increased, and the static pressure is decreased), so that more air can enter the second flow channel 23.

In the second stage, since the sectional area of the second flow channel 23 is gradually increased, the flow rate of the air is reduced, the static pressure of the air is increased, the increase of the static pressure can avoid the occurrence of a local backflow phenomenon, and the circulation efficiency of the air can be improved, so that the heat exchange between the air and the upper half part of the radiator 10 is sufficient, and the upper half part of the radiator 10 can be effectively cooled and radiated.

According to the air conditioner 100 of the embodiment of the present invention, including the electronic 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 base 20 of the electronic control box 200, when the fan blade 40 of the air conditioner 100 rotates, a high-speed negative pressure region 70 is formed between the heat sink 10 and the fan blade 40, so that air inside the air conditioner 100 flows through the heat sink 10 through the plurality of heat dissipation flow channels 21 to cool and dissipate heat of the heat sink 10, so that the heat sink 10 can reliably cool the components 60 inside the electronic control box 200, and the temperatures of the components 60 inside the electronic control box 200 can be always within an appropriate working temperature range, which is beneficial to improving 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.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more.

In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.

In the description of the invention, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer 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.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (13)

1. An electric control box of an air conditioner, comprising:

a heat sink;

the supporting seat, the radiator install in the supporting seat, a plurality of heat dissipation runners are injectd to the supporting seat, and is a plurality of heat dissipation runners are in the direction of height of automatically controlled box arranges in proper order, and is a plurality of at least two among the heat dissipation runners the air outlet of heat dissipation runner with the radiator corresponds.

2. An electric control box of an air conditioner according to claim 1, wherein the plurality of heat dissipation flow paths include: the flow channel comprises a first flow channel and a second flow channel, wherein the first flow channel is positioned below the second flow channel.

3. An electric control box of an air conditioner according to claim 2, wherein the first flow passage and the second flow passage each extend obliquely upward toward the radiator from a lower direction to an upper direction of the electric control box.

4. An electric control box of an air conditioner according to claim 3, wherein in the height direction of the first flow channel, the distance between the lowest point of the first flow channel and the inner surface of the first flow channel opposite to the lowest point is K1, the height of the radiator is H, and the relation is satisfied: k1 is less than or equal to 0.2H.

5. An electric control box of an air conditioner according to claim 4, wherein the second flow passage is configured as a variable cross-section flow passage, and a minimum distance between a lower surface and an upper surface of the second flow passage in a height direction of the second flow passage is K2, and satisfies a relation: k2 is less than or equal to 0.2H.

6. An electric control box of an air conditioner according to claim 5, wherein said supporting base comprises: the rain baffle, the rain baffle is located one side of radiator, the rain baffle with the interval distance between the radiator is m, satisfies the relational expression: 0.5 M is less than or equal to (K1 + K2).

7. An electrical control box of an air conditioner according to claim 3, wherein the support base defines a main flow passage, and a partition plate is provided in the main flow passage, the partition plate dividing the main flow passage into the first flow passage and the second flow passage.

8. An electric control box of an air conditioner according to claim 7, characterized in that in the height direction of the electric control box, the projection of the lowest point of the upper surface of the second flow passage is located at the side of the projection of the lowest point of the partition plate close to the radiator.

9. An electric control box of an air conditioner according to claim 7, wherein the highest point of the partition plate is located above the lowest point of the upper surface of the second flow passage in the height direction of the electric control box.

10. An electric control box of an air conditioner according to claim 7, wherein in the height direction of the electric control box, the distance between the highest point of the partition plate and the radiator is Hn, the height of the radiator is H, and the relation is satisfied: hn is more than or equal to 0.4H and less than or equal to 0.6H.

11. An electric control box of an air conditioner according to claim 2, wherein the air outlet and the air inlet are respectively provided at two ends of the first flow passage in an extending direction of the first flow passage, and a sectional area of the first flow passage gradually increases from the air inlet to the air outlet.

12. An electric control box of an air conditioner according to claim 2, wherein in the extending direction of the second flow channel, the air outlet and the air inlet are respectively arranged at two ends of the second flow channel, and the sectional area of the second flow channel from the air inlet to the air outlet is gradually reduced and then gradually increased.

13. An air conditioner characterized by comprising an electric control box of the air conditioner according to any one of claims 1 to 12.

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