The invention relates to a compound type compact heat exchanger core which comprises end plates, gas heat exchange units and liquid heat exchange units. The gas heat exchange units and the liquid heatexchange units are alternately stacked between the end plates. Flow channel of the liquid heat exchange units are larger than heat exchange channels of the gas heat exchange unit. The compound type compact heat exchanger core has the following beneficial effects that through the arrangement mode that the gas heat exchange units and the liquid heat exchange units are alternately stacked, the flowarea of the channels on one side is increased, so that the blockage problem is avoided when particle impurities exist in a working medium, and the service life of a heat exchanger is prolonged; and meanwhile, the flow resistance of fluid can be reduced, and the heat exchange effect is enhanced. Each gas heat exchange unit can be formed by stacking multiple layers of micro-channel etched plates sothat when a working medium with poor heat transfer performance flows through the channels of the gas heat exchange units, the heat exchange demand of the working medium can be met, heat can be fully transferred; and the size of the core of the heat exchanger can be reduced under the condition of the same heat exchange power, and the heat exchange efficiency is improved.

Compound type compact heat exchanger core

The invention discloses a double-sided staggered printed circuit board type heat exchange plate and a heat exchanger, and belongs to the technical field of the heat exchangers. The heat exchange platecomprises a plurality of first fluid passages and a plurality of second fluid passages; the first fluid passages are formed in one side of the heat exchange plate at intervals, the second fluid passages are formed in the other side of the heat exchange plate, and the first fluid passages and the second fluid passages are formed at intervals in the heat exchange plate. According to the heat exchange plate, the double-sided staggered fluid passages are adopted to form countercurrent or downstream heat exchange, so that full-main surface heat exchange is achieved, the secondary heat exchange surface does not exist, and the heat exchange area and the heat exchange effect are effectively improved; and in addition, the heat exchange plate is relatively thin, so that the size and the weight of aheat exchange module core are further reduced, and the compactness and the heat exchange performance of the heat exchanger are improved.

Cheng Keyong

Papers

Double-sided staggered printed circuit board type heat exchange plate and heat exchanger