CN220269521U

CN220269521U - Electrical box and air conditioner

Info

Publication number: CN220269521U
Application number: CN202321813871.6U
Authority: CN
Inventors: 张红梅; 周琪; 吴梅彬; 李子峰
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2023-07-11
Filing date: 2023-07-11
Publication date: 2023-12-29
Anticipated expiration: 2033-07-11

Abstract

The utility model discloses an electric appliance box and an air conditioner, wherein the electric appliance box comprises a box body for installing components and a box cover assembled with the box body. Compared with the prior art, the electrical box that this application provided is bilayer structure, and the chamber that holds that inner shell and lid formed is in the wind channel, can satisfy and hold the components and parts in the intracavity and not directly with external contact and can dispel the heat to components and parts, can also avoid the foreign matter in the air such as dust to cause the damage to components and parts, still makes electrical box can adapt to under various temperature environment through setting up in heating device and the heat dissipation wind channel.

Description

Electrical box and air conditioner

Technical Field

The utility model relates to the field of household appliances, in particular to an electric box and an air conditioner.

Background

Because the air conditioner outdoor unit is arranged outdoors, wind sand, rain and snow and the like in the external environment easily enter the electric box from the heat dissipation air duct of the electric box, and the circuit components are corroded by damp or are covered with dust for a long time, so that faults occur. If the shell of the electric box is simply sealed, the temperature rise of components and parts is too high, the service life of the components and parts is influenced, the reliability and the service life of the whole machine are influenced, and meanwhile, the problems that the components and parts cannot be started due to condensation of the electric box in some special temperature environments can be solved.

Disclosure of Invention

Aiming at the problem that foreign matters such as wind sand and the like are easy to enter from a heat dissipation air duct in the prior art, the utility model provides an electric box and an air conditioner.

The technical scheme of the utility model is that the electric appliance box comprises a box body for mounting components and a box cover assembled with the box body, wherein the box body comprises an inner shell and an outer shell, the inner shell and the box cover are matched to form a containing cavity for mounting the components, and the outer shell and the inner shell are arranged at intervals, so that an air channel for heat dissipation is formed between the inner shell and the outer shell.

Further, the outer shell and the inner shell are both box-shaped structures, and the shapes of the inner shell and the outer shell are concave;

convection devices are arranged at two ends of the air duct, so that heat of the accommodating cavity is taken away by the air duct.

Further, the convection device is arranged at the air inlet and the air outlet at two ends of the air duct and comprises a first fan and a second fan, wherein the first fan is arranged at the leeward position towards the air outlet, and the second fan is arranged at the air outlet position towards the air inlet.

Further, a press-riveting nut column for fixing components is further arranged in the inner shell, and the press-riveting nut column is only installed on the inner side of the accommodating cavity.

Further, the filter device is arranged at the air inlet and is positioned between the second fan and the air inlet, and dust is prevented from entering the air duct by the filter device.

Further, the air inlet is further provided with a heating device, the heating device is located on one side, opposite to the air inlet, of the filtering device, and the heating device can adjust the internal temperature of the electrical box.

Further, a plurality of heat dissipation fins are arranged in the air duct, the heat dissipation fins are arranged on the outer shell, and the two sides of the accommodating cavity penetrate through the inner shell.

Further, a plurality of heat dissipation holes for improving the heat dissipation effect are formed in the heat dissipation fins.

Further, a temperature sensing bulb for collecting temperature and a refrigerant heat dissipation device for dissipating heat when the temperature sensing bulb is triggered are arranged in the electric box.

The application also discloses an air conditioner, which is provided with the electric box.

Compared with the prior art, the utility model has at least the following beneficial effects:

1. the proposal of the double-layer shell electric box shell is used for sealing the inner shell for installing components and parts, and solves the problem that the conventional electric box can be damaged by water and dust entering the components and parts;

2. the heat dissipation air duct capable of adjusting the temperature is provided, so that the electric box can be reliably applied to various temperature environments.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of the electrical box structure of the present utility model;

FIG. 3 is a schematic cross-sectional view of an electrical box of the present utility model;

FIG. 4 is a schematic view of the internal structure of the electrical box of the present utility model;

FIG. 5 is a schematic view of the press-riveting nut of the electrical box of the present utility model;

fig. 6 is an enlarged view of a portion of the circle of fig. 2.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Thus, reference throughout this specification to one feature will be used in order to describe one embodiment of the utility model, not to imply that each embodiment of the utility model must be in the proper motion. Furthermore, it should be noted that the present specification describes a number of features. Although certain features may be combined together to illustrate a possible system design, such features may be used in other combinations not explicitly described. Thus, unless otherwise indicated, the illustrated combinations are not intended to be limiting.

The electric appliance box comprises a box body 1 for installing components 53 and a box cover 2 assembled with the box body 1, wherein the box body 1 comprises an inner shell 11 and an outer shell 12, the inner shell 11 and the box cover 2 are matched to form a containing cavity 5 for installing the components 53, and the outer shell 12 and the inner shell 11 are arranged at intervals, so that an air duct 3 for heat dissipation is formed between the inner shell 11 and the outer shell 12.

Specifically, as shown in fig. 1 and fig. 2, the electrical box provided by the application comprises a box body 1 and a box cover 2, wherein the box body 1 is composed of an inner shell 11 and an outer shell 12, the inner shell 11 and the box cover 2 are matched to form a containing cavity 5 for installing components 53, the outer shell 12 wraps the inner shell 11, a gap is reserved in the middle of the inner shell, and an air duct 3 is formed between the outer shell 12 and the inner shell 11 to radiate the components 53 in the containing cavity 5.

Wherein, hold chamber 5 and wind channel 3 hugs closely the setting, and one side of inner shell 11 is wind channel 3, and the opposite side is hold chamber 5, can understand in practice that hold chamber 5 setting in wind channel 3 to through the convection current of air in wind channel 3, thereby take away the heat of holding the interior components and parts 53 of chamber 5.

Because the existing heat dissipation means of the electrical box is generally that through holes for heat dissipation are directly formed in the electrical box, impurities such as dust in the external environment easily enter the electrical box through the through holes directly and are directly contacted with the components 53 in the electrical box, and dust is easily accumulated on the components 53 or the components are easily affected by damp to cause faults. According to the electrical box, the components 53 are arranged in the accommodating cavity 5 formed by the inner shell 11 and the box cover 2, and the accommodating cavity 5 for arranging the components 53 is sealed, so that impurities in the external environment are prevented from directly contacting the components 53 in the electrical box, and the dustproof effect is achieved; since the temperature of the component 53 is easily increased due to the sealing of the accommodating cavity 5 for installing the component 53, the air duct 3 for heat dissipation is formed by arranging the outer shell 12 and the inner shell 11 at intervals, so that the heat dissipation effect on the component 53 is ensured, and the reliability of the component 53 is ensured.

Further, the outer shell 12 and the inner shell 11 are both box-shaped structures, and the shapes of the inner shell 11 and the outer shell 12 are concave;

convection devices 4 are arranged at two ends of the air duct 3, so that heat of the accommodating cavity 5 is taken away by the air duct 3.

In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present application 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 present application. Specifically, as shown in fig. 3, in an embodiment, the outer shell 12 and the inner shell 11 are in a non-covered box shape, the outer shell 12 is larger than the inner shell 11, the inner shell 11 is suspended in the outer shell 12, and heat dissipation fins 13 are arranged on the inner side of the outer shell 12, so that the inner shell 11 is supported on one hand, and the heat dissipation effect of the air duct 3 is improved on the other hand.

The gap between the inner shell 11 and the outer shell 12 is an air duct 3 for heat dissipation, as shown in the cross section and the position of fig. 3, the cross sections of the inner shell 11 and the outer shell 12 are concave, the concave inner part is the air duct 3, the upper surface is the inner shell 11 for installing the components 53, the lower surface is the outer shell 12, the heat dissipation fins 13 are further arranged on one side of the outer shell 12 facing the inner shell 11 to support the inner shell 11, and convection devices 4 are arranged at two ends of the air duct 3, namely, at two ends of the upper surface of the concave, for forced convection of air in the air duct 3, and heat generated by the components 53 in the accommodating cavity 5 is taken away through the air duct 3, so that the inner temperature of the electric box is reduced, and damage caused by overheating of the components 53 is avoided.

It should be noted that, in one embodiment, the inner case 11 and the outer case 12 are of a structure of the case body 1, in another embodiment, may be of a structure of two basin bodies, in other embodiments, may be of other shapes, and the main body of the electrical box is of a double-layer structure, so long as the accommodating cavity 5 formed by the inner case 11 and the case cover 2 is located in the air duct 3, it can be satisfied that the components 53 in the accommodating cavity 5 are not directly contacted with the outside and can radiate heat from the components 53.

Further, the convection device 4 is installed at the air inlet and the air outlet at two ends of the air duct 3, and includes a first fan 41 disposed at a leeward position toward the air outlet, and a second fan 42 disposed at an air outlet position toward the air inlet.

In the description of the present application, the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The principles and structures of the present utility model are described in detail below with reference to the drawings and the examples. Specifically, as shown in fig. 4, the convection device 4 is two heat dissipation fans, namely a first fan 41 and a second fan 42, which are respectively installed at an air outlet and an air inlet of the air duct 3, the first fan 41 is installed at the air outlet, and the leeward position of the first fan 41 is set towards the air outlet; the second fan 42 is installed at the position of the air inlet, and the air outlet position of the second fan 42 is arranged towards the air inlet. In this way, when the cooling fan is operated, the second fan 42 of the air inlet blows the air from outside into the air duct 3, the first fan 41 of the air outlet blows the air in the air duct 3 to outside, and the forced convection of the air in the air duct 3 is realized through the arrangement of the cooling fan, so that the air is ensured to circulate rapidly, the heat is taken away, and the temperature of the internal components 53 of the electrical box is reduced. Meanwhile, the cooling fans are arranged outside the two ends of the air duct 3, so that the cooling fans are convenient to detach and replace, and the air duct 3 is convenient to inspect and maintain in the later period.

Further, a clinch nut 52 post 51 for fixing the component 53 is provided in the inner case 11, and the clinch nut 52 post 51 is installed only inside the accommodation chamber 5.

Specifically, as shown in fig. 2 and 5, the inner shell 11 is further provided with a press-riveting nut 52 column 51, the component 53 is installed in the accommodating cavity 5 formed by the inner shell 11 and the box cover 2 through the cooperation of the press-riveting nut 52 and the press-riveting nut 52 column 51, and the press-riveting nut 52 column 51 is only installed in the accommodating cavity 5, so that the component 53 is fixed on the inner shell 11 through the press-riveting nut 52, screw holes cannot be generated like a screw fixing mode, no gap or through hole is formed, the inner shell 11 is matched with a sealing accommodating groove formed by the box cover 2, the whole sealing environment of the component 53 in the electric box can be effectively ensured, and faults caused by damage to the component 53 in the electric box due to external impurities such as water vapor, dust and the like are avoided, so that the whole reliability and the service life of the component 53 are affected.

Further, the filter device 6 is disposed at the air inlet and located between the second fan 42 and the air inlet, and the filter device 6 blocks dust from entering the air duct 3.

Specifically, as shown in fig. 3, a layer of filtering device 6 is further disposed at the position of the air inlet, and the filtering device 6 is disposed between the second fan 42 and the air inlet, so as to block dust and various suspended matters in the air from entering the air duct 3. In a specific embodiment, the filtering device 6 is a HEPA filter screen with high filtering efficiency, low flow resistance and long continuous use, and can effectively filter impurities such as dust in the outside air, and in other embodiments, other filtering devices 6 with good filtering effect on the air can also be used.

Through the setting of filter equipment 6 for outside air is blown to the air intake by second fan 42 earlier and is filtered the back reentrant wind channel 3 through filter equipment 6, can effectually prevent debris such as dust in the air and get into wind channel 3, can avoid in the wind channel 3 dust deposit to lead to influencing the radiating effect.

Further, the air inlet is further provided with a heating device 7, the heating device 7 is located on one side, back to the air inlet, of the filtering device 6, and the temperature inside the electric box can be adjusted through the heating device 7.

As shown in fig. 3, the air inlet is further provided with a heating device 7, in a specific embodiment, the heating device 7 is a PTC electric heater with small thermal resistance, high heat exchange efficiency and good safety performance, so that the temperature in the air duct 3 can be safely and rapidly increased, and in other embodiments, other heating devices 7 with high heat exchange efficiency and safety can be used.

When the electrical box works in a transition season, the components 53 inside the electrical box can possibly show condensation, and the temperature inside the electrical box can be increased through the heating device 7, so that the temperature inside the electrical box avoids the dew point temperature at the time, thereby avoiding the condensation inside the electrical box, and further preventing the components 53 inside the electrical box from malfunctioning due to condensation water drop.

When the electrical box operates in an extremely low-temperature environment, the components 53 in the electrical box can be damaged or can not be started normally due to the extremely low temperature, the temperature of the air in the air duct 3 can be increased to a temperature capable of being started safely through the heating device 7, and the components 53 are operated again.

Further, a plurality of heat dissipation ribs 13 are further arranged in the air duct 3, the heat dissipation ribs 13 are arranged on the outer shell 12, and the heat dissipation ribs 13 penetrate through the inner shell 11 at two sides of the accommodating cavity 5.

Further, the heat dissipation rib 13 is provided with a plurality of heat dissipation holes 131 for enhancing heat dissipation effect.

Specifically, as shown in fig. 2 and 6, a plurality of heat dissipation fins 13 are arranged around the inner shell 11 in the air duct 3, the heat dissipation fins 13 are installed on the outer shell 12, the shells of the inner shell 11 and the outer shell 12 penetrate through the two sides of the accommodating cavity 5, a part of the heat dissipation fins 13 are arranged in the air duct 3, the heat in the accommodating cavity 5 can be transferred to the heat dissipation fins 13 in the air duct 3 through the heat dissipation fins 13 penetrating through the inner shell 11, the heat on the heat dissipation fins 13 is taken away through air circulation in the air duct 3, and after the temperature of the heat dissipation fins 13 is reduced through the part positioned in the air duct 3, the temperature of the part positioned in the accommodating groove is also reduced, so that the heat dissipation of the components 53 in the accommodating groove is realized. Meanwhile, when the heating device 7 is started, the temperature in the air duct 3 is increased, the heat dissipation fins 13 are used for transferring the heat, the environment temperature in the accommodating groove is heated, and the heat dissipation fins 13 are used for enabling the heat transfer effect to be better.

The surface of the heat dissipation rib 13 is further provided with a plurality of heat dissipation holes 131, and ventilation flow in the air duct 3 can be increased through the arrangement of the heat dissipation holes 131, heat exchange area is increased, and heat dissipation effect of the air duct 3 is further improved.

Specifically, a temperature sensing bulb or a temperature sensor is further arranged in the electric box, the temperature in the electric box can be detected, a refrigerant heat dissipation device is further arranged in the electric box, when the temperature of the environment in the electric box is detected to rise to a preset value, the refrigerant heat dissipation device is started, and the heat is taken away by combining forced convection of the heat dissipation fins 13 in the air duct 3 and the convection device 4, so that the temperature in the electric box is reduced. Meanwhile, the opening and closing of the heating device 7 are also related to the temperature detected by the temperature sensing bag, when the ambient temperature inside the electric box is detected to be close to the dew point temperature at that time, the heating device 7 is started in a short time, the electric box is closed after the dew point temperature is avoided, and when the electric box is detected to be at the ultralow temperature, the heating device 7 is started until the temperature inside the electric box reaches the preset safe starting temperature, and then the electric box is closed.

The application also discloses an air conditioner, which is provided with the electric box. The outer machine of air conditioner is installed outdoors, receives the influence of factors such as dust and temperature in the external environment easily, and the electrical apparatus box that the air conditioner that this application provided can be applied under the environment of various temperatures, has promoted the environmental suitability of product.

Compared with the prior art, the electrical box that this application provided is bilayer structure, and the chamber 5 that holds that inner shell 11 and lid 2 formed is in wind channel 3, can satisfy not directly with external contact and can dispel the heat to components and parts 53 in holding the intracavity 53, can also avoid the foreign matter in the air such as dust to cause the damage to components and parts 53, still makes electrical box reliable application and under various temperature environment through setting up of heating device 7 and heat dissipation wind channel 3.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The electric appliance box comprises a box body for mounting components and parts and a box cover assembled with the box body, and is characterized in that the box body comprises an inner shell and an outer shell, the inner shell is matched with the box cover to form a containing cavity for mounting the components and parts, and the outer shell is arranged at intervals with the inner shell, so that an air channel for heat dissipation is formed between the inner shell and the outer shell.

2. The electrical box of claim 1, wherein the outer shell and the inner shell are each box-like structures, and the inner shell and the outer shell are concave in shape;

3. The electrical box of claim 2, wherein the convection device is mounted at an air inlet and an air outlet at two ends of the air duct, and comprises a first fan arranged at a leeward position towards the air outlet, and a second fan arranged at an air outlet position towards the air inlet.

4. The electrical box according to claim 1, wherein a clinch nut post for fixing components is further provided in the inner case, the clinch nut post being installed only inside the receiving chamber.

5. An electrical box according to claim 3, wherein a filter device is provided at the air inlet between the second fan and the air inlet, the filter device blocking dust from entering the air duct.

6. The electrical box according to claim 5, wherein the air inlet is further provided with a heating device, which is located at a side of the filtering device facing away from the air inlet, and the heating device can adjust the internal temperature of the electrical box.

7. The electrical box according to claim 1, wherein a plurality of heat dissipation ribs are further provided in the air duct, the heat dissipation ribs are mounted on the outer case, and the heat dissipation ribs are provided through the inner case at both sides of the accommodating chamber.

8. The electrical box of claim 7, wherein the heat dissipation ribs are provided with a plurality of heat dissipation holes for enhancing heat dissipation effect.

9. The electrical box according to claim 1, wherein a temperature sensing bulb for collecting temperature and a refrigerant heat dissipation device for dissipating heat when the temperature sensing bulb is triggered are further arranged in the electrical box.

10. An air conditioner, characterized in that the air conditioner has the electrical box as claimed in any one of claims 1 to 9.