Heat exchanger of refrigeration dryer

Abstract

The invention relates to a heat exchanger of a refrigeration dryer. The heat exchanger comprises a pre-cooler, an oil remover, a condenser and an air returning pipe. An air inlet layer and an air returning layer which are adjacent to each other are arranged in the pre-cooler. An air inlet is formed in the front end of the air inlet layer, the rear end of the air inlet layer is connected with the oil remover, a plurality of oil removing filter screens are arranged in the oil remover, and an oil discharging port is formed in the lower end of the oil remover. The condenser is also provided with an air inlet layer and a refrigerant layer which are adjacent to each other, the front end of the air inlet layer of the condenser is communicated with the oil remover, the rear end of the air inlet layer is connected with the air returning pipe, the refrigerant layer is provided with a refrigerant inlet and a refrigerant outlet, the lower end of the end, connected with the condenser, of the air returning pipe is provided with a water draining port, a filter screen is arranged at the upper end of the end, connected with the condenser, of the air returning pipe, the other end of the air returning pipe is communicated with the air returning layer of the pre-cooler, and an air exhaust port is formed in the rear end of the air returning layer. The heat exchanger of the refrigeration dryer saves refrigeration time and running cost, oil in humid air is removed, and cleanness of dry air is guaranteed.

Description

technical field [0001] The invention relates to drying equipment, in particular to a heat exchanger for a cold dryer. Background technique [0002] The cold dryer condenses the moisture in the humid air through the condenser to form cold dry air. The traditional cold dryer directly sends the wet air into the condenser. Due to the high temperature of the wet air, the condensation time is long and the energy consumption is high. Large, and the temperature of the cold and dry air produced by condensation is low, so it cannot be used directly. In addition, the humid air may contain some oily substances, which cannot be taken out by condensation, and are still in the cold and dry air. The cleanliness of the cold and dry air is not good. high. Contents of the invention [0003] In view of the above shortcomings, the applicant made researches and improvements, and provided a cold dryer heat exchanger that utilizes cold dry air to pre-cool the wet air and removes the wet air. ...

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Problems solved by technology

[0002] The cold dryer condenses the moisture in the humid air through the condenser to form cold dry air. The traditional cold dryer directly sends the wet air into the condenser. Due to the high temperature of the wet air, the condensation time is long and the energy consumption is high. Large, and the temperature of the cold and dry air produced by condensation is low, so it cannot be used directly. In addition, the humid air may contain some oily substances, which cannot be taken out by condensation, and are still in the cold and dry air. The cleanliness of the cold and dry air is not good. high

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