Pump-free jet refrigerating machine

A spray type and refrigerator technology, applied in refrigerators, refrigeration components, machines using refrigerant evaporation, etc., can solve the problems of bulky equipment, poor feasibility, low pressure, etc., and achieve simple equipment structure and long service life , low cost effect

Active Publication Date: 2012-08-01
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Pump-free jet refrigerating machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, a pumpless ejector refrigerator, the first ejector 2 is sequentially connected in series with the condenser 3, the throttling element 4, and the evaporator 5 to form a circuit; the three-way valve 6 is sequentially connected with the first liquid storage tank 7, the first The one-way valve 8 and the generator 1 are connected in series to form a circuit; the generator 1 and the first injector 2 are provided with a communicating pipeline; the condenser 3 and the three-way valve 6 are provided with a communicating pipeline. The height of the condenser 3 is higher than that of the first liquid storage tank 7 , and the height of the first liquid storage tank 7 is higher than that of the generator 1 . The three-way valve 6 includes three ports of port I, port II and port III.

[0027] The specific connection relationship of each element in the refrigerator in this embodiment is:

[0028] The working fluid inlet of the first injector 2 communicate...

Embodiment 2

[0033] Such as figure 2 As shown, a pumpless ejector refrigerator is different from the refrigerator structure in Embodiment 1 in that the pipeline between the condenser 3 and the port 1 of the three-way valve 6 is provided with a second liquid storage tank 9. The height of the second liquid storage tank 9 is higher than that of the first liquid storage tank 7 . The specific connection relationship is: the working medium inlet of the second liquid storage tank 9 is connected with the working medium outlet of the condenser 3 , and the working medium outlet of the second liquid storage tank 9 is connected with port I of the three-way valve 6 . The rest of the connections are the same as in Example 1.

[0034] The working process of the circulating working medium in the refrigerator in this embodiment is:

[0035] When the liquid level in the first liquid storage tank 7 is lower than the set value, the three-way valve 6 switches to position 1, the second liquid storage tank 9...

Embodiment 3

[0037] Such as image 3 As shown, a pumpless ejector refrigerator differs from the refrigerator structure in Embodiment 1 in that a second check valve is connected in series between the working medium outlet of the condenser 3 and the first liquid storage tank 7 10. The specific connection relationship is: the working medium outlet of the condenser 3 communicates with the working medium inlet of the second one-way valve 10, and the working medium outlet of the second one-way valve 10 communicates with the working medium outlet of the first liquid storage tank 7.

[0038] The working process of the circulating working medium in the refrigerator in this embodiment is:

[0039] When the liquid level in the first liquid storage tank 7 is lower than the set value, the three-way valve 6 is switched to position 1, the condenser 3 communicates with the first liquid storage tank 7, and the generator 1 and the first liquid storage tank 7 do not communicate. , the high-temperature and h...

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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...

Claims

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Application Information

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IPC IPC(8): F25B19/02F25B27/00F25B41/04
Inventor 陈光明陈少杰
Owner ZHEJIANG UNIV
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