An air conditioner indoor unit

Abstract

The invention relates to an indoor air conditioner which comprises a shell, a heat exchanger and a fan, wherein a return air inlet is formed in the lower side surface of the shell; an air outlet is formed in the front side of the shell; the heat exchanger is arranged above the return air inlet; the fan is arranged above the heat exchanger; the fan comprises a cross-flow wind wheel and a volute casing which are arranged in a mutually matched manner; an air-outlet opening is formed in the volute casing; the heat exchanger is formed by combining a first heat exchange plate and a second heat exchange plate; the first heat exchange plate and the second heat exchange plate are spliced to form a structure with a V-shaped cross section; the first heat exchange plate is arranged on the rear side below the cross-flow wind wheel; the second heat exchange plate is arranged on the front side below the cross-flow wind wheel; the minimum distance between the edge of the cross-flow wind wheel and the first heat exchange plate is delta 1, and delta 1 is greater than or equal to 12 mm and smaller than or equal to 30 mm. The indoor air conditioner has the benefits as follows: the mounting is convenient, the thickness is small, and both embedded installation and ceiling installation are acceptable; by optimizing delta 1, the air volume is improved while noise is reduced as far as possible, so that the ratio of air volume to noise is further increased.

Description

technical field [0001] The invention relates to an air conditioner indoor unit. Background technique [0002] There is an existing invention patent, the notification number of which is CN 101619875 B, which discloses an indoor unit of a split air conditioner, including the casing of the indoor unit, a cross-flow fan wheel, a heat exchanger, a drainage mechanism, and more than one air supply port and air inlet , the air supply port is located on the front of the indoor unit casing, and the angle α between the vertical direction of the center of the cross-flow wind wheel and the line connecting the shortest distance point on the rear volute tongue to the center of the cross-flow wind wheel is in the range of -10 to +70 degrees. The heat exchanger is in the shape of √, and the heat exchanger is composed of two heat exchange flaps. The fins are arranged on the lower front side of the cross-flow wind wheel, and the cross-flow wind wheel is arranged on the upper side of the heat ...

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Problems solved by technology

[0004] Both of the above two patent documents disclose the structure of the indoor unit of the air conditioner, but neither of them discloses the minimum distance between the edge of the cross-flow fan wheel and the heat exchange fin. According to actual production, the distance between them has a great influence on the air volume and noise of the product. Big

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