Pump-free jet refrigerating machine

Abstract

The invention discloses a pump-free jet refrigerating machine. The pump-free jet refrigerating machine comprises a generator, a first ejector, a condenser, a throttling element, an evaporator, a three-way valve, a first liquid storage tank and a first one-way valve, wherein the first ejector is successively connected with the condenser, the throttling element and the evaporator in series so as to form a loop; the three-way valve is successively connected with the first liquid storage tank, the one-way valve and the generator in series so as to form a loop, and a communicated pipeline is arranged between the generator and the first ejector; and a communicated pipeline is arranged between the condenser and the three-way valve. According to the invention, the bondage of traditional thought is broken through, the switchover of the three-way valve is utilized to realize conveyance of a fluid from a low-pressure condenser to a high-pressure generator, and a circulating pump in traditional circulation is replaced, so as to provide the pump-free jet refrigerating machine; and in addition, the pump-free jet refrigerating machine provided by the invention is utilized to improve different existing jet refrigerating machines.

Description

technical field [0001] The invention belongs to the technical field of refrigeration, in particular to a pumpless jet refrigerator. Background technique [0002] Ejection refrigeration technology is a heat-driven refrigeration technology that relies on liquid vaporization for refrigeration. Compared with compression refrigeration technology, its main advantage is that it only consumes little mechanical energy and can directly use heat energy as a driving energy. It has a simple equipment structure. , small size, low cost, reliable operation, long service life and other advantages. [0003] Such as Figure 6 As shown, the ejector refrigeration cycle system generally includes a generator 13 , an evaporator 18 , a condenser 15 , a circulation pump 16 , a throttling element 17 and an ejector 14 . The cooling temperature of the traditional injection refrigeration cycle system is relatively high, and the coefficient of performance of the cycle system is low, which makes it diffic...

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Problems solved by technology

V.M.Nguyen et al. proposed to use the static pressure of the working medium generated by the height difference between the condenser and the generator to supply liquid from the condenser to the generator. This equipment has the disadvantage of bulky equipment.

S.B.Riffat et al. proposed a heat pipe type jet refrigerator that uses capillary phenomenon to supply liquid to the generator. This equipment has the disadvantage of low pressure.

Jacek Kasperski proposed a refrigeration system that utilizes the centripetal force generated by the rotation of the system to supply liquid to the generator. Because the rotation itself requires a lot of mechanical work, the feasibility of this equipment is poor.

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