CROSS-REFERENCE TO RELATED APPLICATION

This application is a U.S. National Stage of International Application No. PCT/CN2018/075741, filed on Feb. 8, 2018 and published as WO 2019/127855 on Jul. 4, 2019, which claims priority to Chinese Patent Application No. 201711468487.6, filed with the Chinese Patent Office on Dec. 27, 2017. Each application, publication, and patent listed in this paragraph are hereby incorporated by reference in their entireties.

TECHNICAL FIELD

The present disclosure relates to the technical field of heat exchange, and in particular to a heat exchange assembly and a heat exchange device.

BACKGROUND

For an arrangement of a distance between a heat exchanger and a fan in the prior art, an influence of a resistance caused by the distance is usually not considered. Since the increase of the air intake resistance caused by an improperly arranged distance will adversely affect the aerodynamic efficiency, air volume and noise and the like of the whole machine, it is necessary to optimize the arrangement of the distance.

Thus, the increase of the air intake resistance caused by the improperly arranged distance between the heat exchanger and the fan in the prior art, causes the problems of the drop of the aerodynamic efficiency and the rise of the noise of the whole machine.

SUMMARY

An objective of the present disclosure is to provide a heat exchange assembly and a heat exchange device, to solve the problem of the increase of the air intake resistance caused by the improperly arranged distance between the heat exchanger and the fan in the prior art.

In order to achieve the objective above, according to one aspect of the present disclosure, a heat exchange assembly is provided. The heat exchange assembly includes: a heat exchanger; a fan, where the heat exchanger and the fan are spaced apart, and the heat exchanger is located in an air intake direction or in an air outgoing direction of the fan; the fan has an air opening; the air opening faces the heat exchanger; and a shortest distance H between the air opening of the fan and the heat exchanger, and a diameter D of an impeller of the fan satisfy

2⁢HD>1.05.

Further, a projection of the air opening of the fan projected on the heat exchanger is located within an edge of the heat exchanger.

Further, a projection area S0of the heat exchanger projected on a reference plane parallel to the air opening is greater than a projection area SP of the air opening of the fan projected on the reference plane.

Further, an air outgoing area S1of the heat exchanger is greater than an air intake area S2of the air opening of the fan.

Further, the air outgoing area S1and the air intake area S2of the air opening of the fan satisfy

1<S⁢⁢1S⁢⁢2<3.5.

Further, the heat exchanger is a curved plate-shaped structure, or a bent plate-shaped structure formed by attaching a plurality of plate-shaped sections sequentially.

Further, the heat exchanger is the bent plate-shaped structure formed by attaching the plurality of plate-shaped sections sequentially, and a plate section facing the air opening is arranged to be inclined to the air opening.

Further, the heat exchanger surrounds to form a heat exchanging region, and the air opening of the fan is located in the heat exchanging region.

Further, the heat exchanger is a plate-shaped structure, and the heat exchanger is parallel to the air opening, or the heat exchanger is arranged to be inclined to the air opening.

Further, the heat exchanger is one of a V-shaped heat exchanger, a W-shaped heat exchanger and a wave-shaped heat exchanger.

According to another aspect of the present disclosure, a heat exchange device is provided. The heat exchange device includes the heat exchange assembly above.

Further, the heat exchange device is an air conditioner.

According to the technical solutions of the present disclosure, the heat exchange assembly includes the heat exchanger and the fan. The heat exchanger and the fan are spaced apart, and the heat exchanger is located in an air intake direction or in an air outgoing direction of the fan. The fan has the air opening and the air opening faces the heat exchanger. The shortest distance H between the air opening of the fan and the heat exchanger and the diameter D of the impeller of the fan should satisfy

2⁢HD>1.05.

When the heat exchange assembly operates, the fan starts. Under the action of the negative pressure, the air is blown from the fan to the heat exchanger, or the air exchanges heat through the heat exchanger first, and after the heat is exchanged, the air flows through the air opening of the fan and is blown out of the fan. The air intake resistance presents a variation trend that the air intake resistance decreases sharply first and then gradually tends to be stable along with the increase of the distance between the heat exchanger and the fan, therefore, when the diameter D of the impeller and the shortest distance H between the heat exchanger and the air opening of the fan satisfy

2⁢HD>1.05,
it can be ensured mat the air intake resistance is smaller and tends to be stable, thereby preventing effectively the drop of the aerodynamic efficiency and the rise of the noise of the whole machine due to the increase of the air intake resistance.

