clothes dryer

Abstract

The invention provides a clothes dryer, which comprises a housing, a drying inner barrel, a pre-heating heat exchanger, a main thermal heater, an air exhaust duct and a fan, wherein the housing is provided with a fresh air grid nearby an air inlet; the drying inner barrel is arranged in the housing and is provided with an air inlet grid and an air return port; the pre-heating heat exchanger is arranged in the housing, is respectively communicated with the fresh air grid and the main thermal heater and is positioned in front of the main thermal heater in an air inlet direction; the main thermal heater is arranged in the housing and is capable of heating air flowing into the drying inner barrel from the fresh air grid and the air inlet grid; one end of the air exhaust duct is communicated with the air return port, and the other end of the air exhaust duct is communicated with the pre-heating heat exchanger so as to enable the air in the drying inner barrel to flow into the pre-heating heat exchanger and exchange heat with fresh air flowing into the pre-heating heat exchanger from the fresh air grid; and the fan is arranged in the housing and is used for sucking the fresh air into the drying inner barrel via the pre-heating heat exchanger and the main thermal heater. Therefore, the clothes dryer provided by the invention can pre-heat the fresh air, so that heat of high-temperature and high-humidity air is fully utilized and energy consumption of the clothes dryer is effectively reduced.

Description

Technical field [0001] The present invention relates to the technical field of clothes dryers, in particular to a clothes dryer. Background technique [0002] Existing clothes dryers or direct exhaust clothes dryers mostly use electric heating or gas heating at the air inlet section, and then the heated high-temperature gas is sent into the drying inner cylinder through the air supply duct, and mixed and stirred with the clothes to form a high temperature. After the wet gas is discharged directly, the clothes can be dried. [0003] The current technology has a large heat loss. Firstly, after the heater is heated, the high-temperature gas has to pass through a long air supply duct, which has already lost part of the heat, and then enters the drying cylinder; secondly, the drying cylinder itself The amount of external heat dissipation is large, and a lot of heat is wasted again; in the end, the high-temperature and high-humidity gas is directly discharged, and the heat it possesses ...

AI Technical Summary

Problems solved by technology

[0003] The current technology has a large heat loss. First, after the heater is heated, the high-temperature gas has to go through a long air supply duct, which has lost part of the heat, and then enters the dryer; The amount of external heat dissipation is large, and a lot of heat is wasted again; finally, the high-temperature and high-humidity gas is directly discharged, and the heat it possesses is lost again, resulting in greater energy consumption

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