Fresh air ventilator provided with heat exchange function

Abstract

The invention relates to a fresh air ventilator provided with a heat exchange function. The fresh air ventilator comprises an air mixing chamber in a total heat fresh air ventilator, a fresh air inlet and a fresh air outlet which are communicated with the air mixing chamber, a stepping motor used for opening or closing an air mixing air valve, a controller, a temperature sensor and the like; an independent indoor and outdoor temperature detection sensor and an air mixing air valve module controlled by the independent indoor and outdoor temperature detection sensor are arranged in the fresh air ventilator, wherein the air mixing air valve module is jointly controlled by an indoor temperature sensor, an outdoor temperature sensor and the controller, and is also controlled by a function of an air mixing module in the controller; indoor fresh air introduced outdoors is heated through starting the air mixing air valve according to the detected indoor and outdoor temperature by the fresh air ventilator; due to the adoption of the fresh air ventilator, so that unfavorable conditions, such as condensation, icing and the like caused by the reason that the temperature of a heat exchange core body is lower than the air dew point temperature when the fresh air is introduced in a cold zone can be effectively avoided, and an applicable temperature range of the fresh air ventilator can be greatly expanded.

Description

technical field [0001] The invention relates to a fresh air ventilator with heat exchange function, which belongs to the field of household appliances. In particular, it is a full-heat fresh air ventilator with an air mixing function that is suitable for various climates around the world, especially for cold climates. Background technique [0002] In recent years, due to issues such as energy and noise, human living spaces have become more and more airtight. However, the air in this closed space, as time goes by, the concentration of carbon dioxide will increase. At the same time, the accumulation of dust, body odor, formaldehyde, etc. will cause the air to be polluted, which will hinder the breathing of living organisms and affect the health of living organisms. . Especially in small spaces such as offices or vehicles where people often stay, the space should be ventilated at any time. At this time, a ventilation system is usually used. [0003] Most of the existing ven...

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Problems solved by technology

However, this full-heat fresh air ventilator has its own limitations. When used in cold regions, due to the large temperature difference between indoor and outdoor, the temperature of the air on the exhaust side of the room drops below the dew point temperature during the heat exchange process. , there will be condensation or even freezing, which will lead to the decline or loss of machine functions

[0007] Before, some related manufacturers used the way that the exhaust air volume was greater than the fresh air volume to solve the problem of condensation, which brought new problems, that is, the negative pressure in the room, and the problem of ineffective ventilation through the gaps such as doors and windows. Indoor air quality is not guaranteed

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