EP-4321810-B1 - AIR CONDITIONER

Inventors

• GU, YONG
• KAN, Changli
• ZHOU, Baisong
• ZHU, Menghao
• LI, Yunzhi
• XI, Yang
• Ge, Shanshan
• WU, LIN

Dates

Publication Date

20260506

Application Date

20211130

Claims (12)

1. An air conditioner, comprising: a housing (102) having a fan cavity (104) and a heat exchange cavity (106) in communication with each other; an electric control box (108) disposed at the housing (102) and in communication with the heat exchange cavity (106) and the fan cavity (104); an electric control (110) disposed in the electric control box (108); and a fan assembly (112) disposed in the fan cavity (104), the fan assembly (112) being configured to supply air to the heat exchange cavity (106) and dissipate heat of the electric control box (108), wherein: the electric control box (108) has a first heat dissipation hole (120) in communication with the heat exchange cavity (106) and a second heat dissipation hole (124) in communication with the fan cavity (104); and after flowing into the heat exchange cavity (106), an airflow in the fan cavity (104) at least partially flows into the electric control box (108) through the first heat dissipation hole (120) and flows back to the fan cavity (104) through the second heat dissipation hole (124).
2. The air conditioner according to claim 1, further comprising a heat dissipation air duct (114) communicating the heat exchange cavity (106) and the electric control box (108).
3. The air conditioner according to claim 2, further comprising: a mounting beam (116) disposed at a connection between the fan cavity (104) and the heat exchange cavity (106); and a support member (118) disposed in the heat exchange cavity (106), the heat dissipation air duct (114) being located between the mounting beam (116) and the support member (118).
4. The air conditioner according to claim 2, wherein: the electric control box (108) is located at a lateral side of the fan cavity (104); and the heat dissipation air duct (114) is arranged transversely with respect to an air supply direction of the fan assembly (112).
5. The air conditioner according to claim 3, wherein: a spacing is formed between an inlet end of the heat dissipation air duct (114) and an outlet end of the fan cavity (104); and the support member (118) has an arc-shaped guide surface (122) located at the inlet end of the heat dissipation air duct (114).
6. The air conditioner according to claim 3, further comprising a heat exchanger (144) disposed in the heat exchange cavity (106), wherein: the heat dissipation air duct (114) has an inlet end located at a side of the heat exchanger (144) facing towards the fan assembly (112); and after flowing into the heat exchange cavity (106), an airflow in the fan cavity (104) at least partially flows into the heat dissipation air duct (114) to exchange heat with the heat exchanger (144).
7. The air conditioner according to claim 6, wherein: the housing (102) further comprises a pipeline cavity (152) isolated from the heat exchange cavity (106) by the support member (118); and the heat dissipation air duct (114) is located between the pipeline cavity (152) and the electric control box (108).
8. The air conditioner according to any one of claims 2 to 7, further comprising: an air guide hood (126) disposed at the fan cavity (104) and configured to guide an airflow towards the heat exchange cavity (106).
9. The air conditioner according to claim 8, wherein: the air guide hood (126) has an air supply outlet (128) arranged to face towards the heat exchange cavity (106); and a side wall (130) of the air guide hood (126) has an inclined guide surface (132) located at the air supply outlet (128), the inclined guide surface (132) extending towards an inlet end of the heat dissipation air duct (114).
10. The air conditioner according to claim 8, wherein: the air guide hood (126) has an air inlet (134) arranged to face towards an air return inlet (136) of the fan cavity (104); and the electric control box (108) is disposed at a lateral side of the air guide hood (126).
11. The air conditioner according to any one of claims 1 to 7, wherein: the fan cavity (104) has an air return inlet (136); the heat exchange cavity (106) has an air outlet (138), air passages being located between the air return inlet (136) and the air outlet (138); and the electric control box (108) is disposed at a lateral side of the air passages and is in communication with some of the air passages in the heat exchange cavity (106).
12. The air conditioner according to claim 11, wherein the fan assembly (112) comprises: a fan wheel (140) disposed in the air duct; and a driver (142) disposed between the fan wheel (140) and the electric control box (108) and connected to the fan wheel (140).

Description

FIELD The present invention relates to the field of air conditioning technologies, and more particularly, to an air conditioner. BACKGROUND Electric controls such as a motor drive module will generate heat during use. In the related art, a heat dissipation member is disposed in an electric control box. However, the heat dissipation member has a low heat dissipation efficiency, which fails to effectively satisfy heat dissipation demand of the electric controls and of an interior of the electric control box, which easily results in damage to the electric controls. JP2006097995Adiscloses an air conditioner capable of smoothly leading outside air led into an air conditioner body.JP3276236B2discloses a radiating fin provided with through holes for passing cooling air at a plurality of the fins to improve heat dissipation.CN103363597Adiscloses an air conditioner outdoor machine having a forced heat radiating function.US 10429089B2discloses an outdoor unit of an air conditioner wherein a control box is configured so that heat exchange chamber-side air flows toward a fan motor assembly via an inside of the control box by operation of the fan motor assembly. SUMMARY The present invention aims to solve at least one of the technical problems in the related art. Aspects of the present invention are set out in the accompanying claims. To this end, the present invention provides an air conditioner. According to embodiments of the present invention, an air conditioner is provided in claim 1. The air conditioner according to the embodiments of the present invention includes the housing, the electric control box, the electric control, and the fan assembly. In an air supply direction of the air conditioner, the housing has the fan cavity and the heat exchange cavity in communication with each other. The electric control box is disposed in the housing and is in communication with the heat exchange cavity and the fan cavity. The electric control is disposed in the electric control box and can ensure that the whole air conditioner is operated under control. The fan assembly is disposed in the fan cavity and is configured to supply the air to the heat exchange cavity during operation. In an exemplary embodiment, the fan assembly can supply the air to the heat exchange cavity during operation, which increases a pressure in the heat exchange cavity to be higher than a pressure in the electric control box and a pressure in the fan cavity. Therefore, during the operation of the air conditioner, due to a pressure difference between the heat exchange cavity and the electric control box, an airflow in the heat exchange cavity at least partially flows into the electric control box, and flows back to the fan cavity after flowing through the electric control box. During use of the air conditioner, the electric control will generate heat, and thus a temperature in the electric control box will rise. The high temperature will easily result in damage to the electric control and affect a service life of the electric control. Therefore, the airflow flowing through the electric control box can effectively dissipate heat of the electric control box and the electric control in the electric control box, which can ensure an appropriate temperature in the electric control box and a temperature reduction of the electric control. Therefore, safe use of the electric control box and the electric control can be ensured. Also, during the operation of the air conditioner according to the present invention, the air in the heat exchange cavity flows into the electric control box, while the fan assembly can continuously supply air to the heat exchange cavity during its operation. As a result, the pressure in the heat exchange cavity is increased to be greater than the pressure in the electric control box and the pressure in the fan cavity. Therefore, in the present invention, a volume of air entering the electric control box can be significantly increased to enhance a heat dissipation effect on the electric control box and the electric control in the electric control box. In addition, the present invention has better heat dissipation effect compared with a technical solution in which the electric control box is cooled by using air from an external environment in the related art. In addition, since an airflow driven by the fan assembly has a relatively low temperature, the airflow in the heat exchange cavity can cool down the electric control in the electric control box to a certain extent when flowing through the electric control box, which further reduces a temperature of the electric control, ensuring the service life of the electric control. Therefore, in the present invention, a circulating flow path can be formed inside the air conditioner, to allow an airflow in the fan cavity flowing into the heat exchange cavity to at least partially flow into the electric control box and then flow back to the fan cavity through the electric control box. Therefore, ef