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Ejector with area ratio automatically adjusted along with evaporation temperature and ejection type refrigerating machine

A technology of automatic adjustment and evaporation temperature, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve problems such as heavy workload, complicated operation and maintenance, and achieve the effect of improving efficiency and increasing ejection coefficient

Inactive Publication Date: 2014-10-08
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned injectors need to be adjusted manually, the workload is large, and the operation and maintenance are relatively complicated.

Method used

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  • Ejector with area ratio automatically adjusted along with evaporation temperature and ejection type refrigerating machine
  • Ejector with area ratio automatically adjusted along with evaporation temperature and ejection type refrigerating machine
  • Ejector with area ratio automatically adjusted along with evaporation temperature and ejection type refrigerating machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 As shown, an injector that automatically adjusts the area ratio with the evaporation temperature, including the injector including the working fluid inlet 1a, the injection fluid inlet 1b, the fluid outlet 1c, the working fluid nozzle 1d, the diffuser chamber 1e and the outer balance tube 1f Cavity 1, temperature-sensing package 2 connected to injector cavity 1, diaphragm 3 that separates injector cavity 1 into two spaces connected to temperature-sensing package 2 and external balance tube 1f, and adjusting cone 4 , spring 5;

[0038] The injection cavity 1 is divided into a steam chamber 101, an injection chamber 102, a mixing chamber 103 and a diffusion chamber 1e, the fluid outlet 1c is arranged at the outlet of the diffusion chamber 1e; the working fluid inlet 1a is arranged on the side wall of the steam chamber 101, and It communicates with the steam chamber 101 ; the injection fluid inlet 1 b is arranged on the side wall of the injection chamber ...

Embodiment 2

[0045] This embodiment is the improvement of the specific application carried out on the basis of Example 1, such as figure 2 shown in figure 1 On the basis of the system shown, an ejector refrigerator with an ejector that automatically adjusts the area ratio with the evaporation temperature includes a condenser 6, a throttle valve 7, an evaporator 8, a circulation pump 9, and a generator 10; the fluid outlet 1c is connected to the inlet of the condenser 6, the outlet of the condenser 6 is connected to the inlet of the circulation pump 9 and the inlet of the throttle valve 7 at the same time, the outlet of the circulation pump 9 is connected to the inlet of the generator 10, and the outlet of the generator 10 is connected to the inlet 1a of the working fluid , the outlet of the throttle valve 7 is connected with the inlet of the evaporator 8, the outlet of the evaporator 8 is connected with the injection fluid inlet 1b, and the outer balance pipe 1f is connected with the outl...

Embodiment 3

[0051] Such as image 3 As shown, this embodiment is an improvement on the basis of Example 2. The temperature sensing package 2 is located on the wall of the evaporator 8. The heat exchange between the working fluids makes the pressure change in the temperature sensing bulb 2 more sensitive to the change of the evaporation temperature.

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Abstract

The invention discloses an ejector with the area ratio automatically adjusted along with evaporation temperature. The ejector comprises a vapor chamber, an adjustment chamber and a thermal bulb, wherein a working fluid nozzle is arranged on a gas outlet of the vapor chamber, and a coaxially arranged adjusting cone is arranged in the working fluid nozzle; an adjusting piece is arranged in the adjustment chamber; an inner cavity of the thermal bulb is communicated with a driving chamber, and the thermal bulb is used for sensing the temperature of ejected fluid, converting the temperature into a pressure signal and outputting the pressure signal; according to the pressure signal of the thermal bulb, the adjusting cone is adjusted by the adjusting piece in real time to axially move, and thus the flow area of the working fluid nozzle can be adjusted. The invention further discloses a refrigerating machine with the ejector. The ejector breaks through constraints of a traditional thought, through changes of the position of the adjusting cone in the axial direction of the working fluid nozzle caused by deformation of a membrane along the evaporation temperature under the combined action of the pressure of an outlet of an evaporator, the pressure of the thermal bulb and a spring, the flow area of the working fluid nozzle is changed, the area ratio of the ejector is changed, and thus the ejector can work with the optimum size.

Description

technical field [0001] The invention belongs to the technical field of refrigeration, and relates to an ejector and an ejector refrigerator which can automatically adjust the area ratio according to the evaporation temperature. Background technique [0002] Ejection refrigeration technology is a heat-driven refrigeration technology. Compared with mechanical compression refrigeration technology, its main advantage is that it only consumes little mechanical energy and can directly use heat energy as the driving energy. It has the advantages of simple structure, small size and low cost. Low cost, reliable operation, long service life and other advantages. Jet refrigeration is a refrigeration method driven by low-grade energy, which can effectively utilize renewable energy such as solar energy and geothermal energy, as well as industrial waste heat and waste heat; the refrigerant used in jet refrigeration is mainly water, hydrocarbons or hydrofluorine Hydrocarbon refrigerants c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B41/00F25B9/08F25B41/40
Inventor 陈光明陈少杰方凌云闫继位
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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