Small-sized throttle low temperature refrigerator circulating system with injector
A low-temperature refrigerator and circulation system technology, applied in refrigerators, fluid circulation arrangements, refrigeration components, etc., can solve problems such as inability to effectively improve the performance of the circulation system, increase the irreversible loss of the system, and limit the reliability of the exhaust pressure. The effect of simple structure, lower pressure ratio, and increased manufacturing cost
Inactive Publication Date: 2009-08-19
XI AN JIAOTONG UNIV
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Problems solved by technology
At a certain evaporating temperature (that is, the refrigeration temperature requirement), when the ambient temperature is constant, increasing the exhaust pressure can improve the performance of the circulation system; but the higher the pressure ratio of the compressor, this will reduce the efficiency of the compressor and increase the efficiency of the system. The irreversible loss; at the same time, increasing the discharge pressure of the compressor will also be limited by the reliability of the single-stage oil-lubricated compressor technology
Therefore, in the conventional throttling refrigeration cycle, it is impossible to effectively improve the performance of the cycle system simply by increasing the discharge pressure of the compressor.
Method used
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Embodiment Construction
[0011] Such as figure 1 As shown, the small throttling cryogenic refrigerator circulation system with an ejector of the present invention includes a compressor connected on the pipeline, a cooler, a regenerator I, a regenerator II, a throttle valve, an evaporator, and a regenerator There is also an ejector between the II and the evaporator; the outlet of the compressor is connected to the inlet of the cooler, and the outlet of the cooler is connected to the inlet of the regenerator I; the outlet of the high-pressure gas of the regenerator I is divided into two paths, one of which is The high-pressure gas is directly connected to the inlet of the regenerator II; the outlet of the regenerator II is connected to the throttle valve; the outlet of the throttle valve is connected to the inlet of the evaporator. Another path of high-pressure gas from regenerator I directly enters the ejector as the ejection gas, and the ejected gas from the evaporator enters the ejector; the outlet o...
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The invention discloses a small throttling low-temperature refrigerator circulation system with an ejector, which includes a compressor connected on the pipeline, a cooler, two regenerators, a throttle valve, the second regenerator and an evaporator There is also an injector between the injectors. The invention utilizes the expansion and supercharging effects of the ejector to increase the suction pressure of the compressor, reduce the pressure ratio, and reduce the suction specific volume of the compressor; correspondingly, it can reduce the unit power consumption of the compressor and increase the output of the compressor. Increase the cooling capacity of the system and improve the coefficient of performance of the system. On the other hand, the heat exchange equivalent on both sides of the regenerator is more matched by using the ejector, thereby improving the heat recovery process and reducing the irreversible loss in the heat recovery process. Therefore, the small throttling cryogenic refrigerator circulation system with ejector has obvious advantages in improving the performance of the throttling refrigeration system.
Description
technical field [0001] The invention belongs to the technical field of refrigeration and low temperature, and relates to a refrigeration cycle system, in particular to a small throttling low-temperature refrigerator cycle system with an ejector. The cycle system can increase the suction pressure of the compressor due to the use of the ejector , reduce the pressure ratio of the compressor, increase the air delivery capacity of the compressor; thus reduce the unit power consumption of the compressor, increase the cooling capacity of the system, and improve the performance of the circulation system. It can be applied to the cooling of low-temperature refrigerators, medical low-temperature refrigeration equipment and electronic equipment. Background technique [0002] Small throttling cryogenic refrigerators are widely used in space refrigeration, electronic device cooling and medical cryogenic refrigeration equipment and other fields. It has the characteristics of simple and c...
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IPC IPC(8): F25B9/08
CPCF25B2341/0014F25B41/00
Inventor 鱼剑琳
Owner XI AN JIAOTONG UNIV