Total-heat fresh air ventilator with double-layer air duct

Abstract

The invention relates to the technical field of total-heat fresh air ventilators, aims to solve the problem that the performance of an existing fresh air ventilator is poor due to the fact that an air duct structure of the existing fresh air ventilator is complex, and provides a total-heat fresh air ventilator with a double-layer air duct. The total-heat fresh air ventilator with the double-layer air duct comprises a fresh air duct, a return air duct and a total-heat heat exchange element; the fresh air duct communicates with an outdoor air inlet and an indoor air outlet and comprises a first downstream section; the return air duct communicates with an indoor air inlet and an outdoor air outlet and comprises a first upstream section; the total-heat heat exchange element comprises a fresh air channel and a return air channel which can exchange heat, the fresh air channel is arranged in the fresh air duct or forms a part of the fresh air duct, and the return air channel is arranged in the return air duct or forms a part of the return air duct; and part of the first downstream section and part of the first upstream section are arranged in an upper-lower layer mode in the vertical plane so as to form the double-layer air duct. According to the total-heat fresh air ventilator with the double-layer air duct, the air resistance can be reduced, the efficiency of the fresh air ventilator is improved, and low-noise operation can be achieved.

Description

technical field [0001] The invention relates to the technical field of total heat fresh air blower, in particular to a full heat fresh air blower with double-layer air ducts. Background technique [0002] The fresh air fan is an effective air purification equipment, which can not only exhaust indoor dirty air to the outside, but also introduce fresh outdoor air into the room after filtering, sterilizing, disinfecting and other measures to keep the indoor air fresh and clean. With the improvement of people's performance requirements for fresh air fans, the structure of fresh air fans has also undergone tremendous changes. The performance of fresh air fans is mainly affected by the structure of the air duct. At present, relatively advanced fresh air fans can usually realize functions such as full heat exchange and purification, which put forward higher requirements for the structural design of the air duct. [0003] There are some problems in the air duct structure of the ex...

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Problems solved by technology

[0005] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem that the air duct structure of the existing fresh air machine is complex and the performance of the fresh air machine is poor, the present invention provides a full-heat fresh air machine with double-layer air ducts. The hot fresh air machine includes: a fresh air duct, which communicates with the outdoor air inlet and the indoor air outlet, and the fresh air duct includes a first downstream section; a return air duct, which communicates with the indoor air inlet and the outdoor air outlet, and the return air duct The duct includes a first upstream section; a total heat heat exchange core, which includes a fresh air passage and a return air passage capable of heat exchange, and the fresh air passage is arranged in the fresh air passage or forms a part of the fresh air passage, so The return air channel is set in the return air channel or constitutes a part of the return air channel, so as to realize the total heat exchange between the fresh air and the return air; wherein, the first upstream section is located in the return air channel Upstream, the first downstream section is located downstream of the fresh air channel, part of the first downstream section and part of the first upstream section are arranged in upper and lower layers in the vertical plane to form the double-layer wind road

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