Single pump lithium bromide absorption unit

Abstract

The invention discloses a single pump type lithium bromide absorption unit which comprises an evaporator (1). A heat exchange pipe bundle of the evaporator is divided into a plurality of units from top to bottom, and each unit comprises a lower row of heat exchange pipes (81) and an upper row of heat exchange pipes (82), wherein the lower row of heat exchange pipes (81) and the upper row of heat exchange pipes (82) are sequentially distributed from bottom to top. Water ponds (83) are arranged on the lower portions of the lower rows of heat exchange pipes (81), overflow pipes (84) used for controlling the water level of the water ponds are arranged inside the water ponds, and overflow pipes are arranged on the lower portions of the upper rows of heat exchange pipes and are 0 mm to 2 mm away from the middles of the upper rows of heat exchange pipes. According to the single pump type lithium bromide absorption unit, on the conditions that a cryogen recirculation system is omitted based on an existing lithium bromide absorption unit and only one solution pump is arranged, multistage immersion type evaporation heat exchange and agitation heat exchange of the heat exchange pipe bundle of the evaporator are utilized, the heat in the heat exchange pipe bundle is transferred to cryogen water, heat transfer and agitation of the cryogen water are facilitated, the damping effect is achieved for splash of the cryogen water, and the cryogen water is evaporated thoroughly.

Description

technical field [0001] The invention relates to a lithium bromide absorption type cold (hot) water machine, in particular to a single-pump lithium bromide absorption type unit capable of canceling a refrigerant water recirculation system and a refrigerant pump and using only one solution pump to work normally. Background technique [0002] Existing lithium bromide absorption type cold (hot) water machine such as figure 1 As shown, it is mainly composed of evaporator 1, condenser 2, generator 3, absorber 4, solution heat exchanger 5, solution pump 6, refrigerant pump 7 and so on. The heat exchange tube cluster of the generator heats and evaporates the lithium bromide dilute solution outside the tube cluster through a high-temperature heat source, and concentrates it into a concentrated solution. The heat exchange tube cluster of the condenser flows through medium temperature water, and condenses the lithium bromide water vapor from the generator outside the tube cluster into...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and to design a simple and reasonable structure, high operational reliability, which can work normally only with a solution pump, and can reduce unit leakage and solve the problem of refrigerant pollution. Pump type lithium bromide absorption unit

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