A suction type evaporator
An evaporator and air extraction technology, applied in the field of air extraction evaporators, can solve the problems of increasing the heat exchange area, increasing the heat exchange area, and restricting the application range, so as to strengthen the heat exchange effect and reduce the thermal resistance of the gas. , improve the effect of contact
Active Publication Date: 2016-06-29
河北亚通制冷设备有限公司
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Problems solved by technology
[0003] Existing technologies mainly achieve enhanced heat transfer by increasing the heat transfer area and destroying the thermal resistance of the liquid film. Due to the increase in the heat transfer area, the cost and floor space of the evaporator are increased, and the application range is limited.
Method used
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[0013] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.
[0014] The schematic diagram of the suction evaporator of the present invention is as follows figure 1 As shown, the evaporator body is composed of multiple heat exchange tubes connected in sequence, each of the heat exchange tubes includes a straight pipe section 2 and an elbow section 7, and the refrigerant outlet of the evaporator body An air collecting pipe 6 is connected, and an air extraction pipe 4 is connected to the straight pipe section 2 of the heat exchange pipe. One end of the air extraction pipe 4 is in communication with the inside of the heat exchange pipe, and the other end of the air extraction pipe 4 is connected to the air collecting pipe. 6 Connected.
[0015] A gas-liquid separation membrane 3 for separating refrigerant gas and liquid and allowing refrigerant gas to enter the suction pipe 4 is installed inside the suction pipe 4....
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The invention discloses a pumping type evaporator, which uses a pumping tube to separate gas and liquid inside the evaporator, thereby increasing the contact between liquid refrigerant and the inner wall of a serpentine heat exchange tube and enhancing the heat exchange effect. The refrigerant outlet of the evaporator body is connected with an air collecting pipe, and the straight pipe section of the heat exchange tube is connected with an air extraction pipe, one end of the air extraction pipe communicates with the inside of the heat exchange tube, and the other end of the air extraction pipe communicates with the air collecting pipe. A gas-liquid separation membrane is installed inside the exhaust pipe. A liquid-gas separation membrane is installed inside the straight pipe section of the heat exchange tube. The evaporator uses the suction pipe to separate the gas and liquid inside the evaporator, thereby improving the contact between the liquid refrigerant and the inner wall of the serpentine heat exchange tube. The gas-liquid separation membrane and the liquid-gas separation membrane make the refrigerant flowing in the evaporator in a liquid state. The refrigerant reduces the gas thermal resistance formed by the gas refrigerant on the inner surface of the evaporator and enhances the heat exchange efficiency of the evaporator.
Description
Technical field [0001] The present invention relates to the technical field of refrigeration, in particular to a pumping evaporator. Background technique [0002] The evaporator in the refrigeration system is composed of a serpentine heat exchange tube. When the liquid refrigerant flows through the serpentine heat exchange tube, it absorbs the surrounding heat and turns from liquid into gas. As the refrigerant flows in the serpentine heat exchange tube, more and more heat is absorbed, and more and more gaseous refrigerant in the serpentine heat exchange tube. Due to the increase of the gaseous refrigerant in the serpentine heat exchange tube, the chance of the liquid refrigerant contacting the inner wall of the serpentine heat exchange tube becomes smaller and smaller, thereby reducing the heat transfer coefficient. How to increase the contact area between the liquid refrigerant and the inner wall of the snake’s serpentine heat exchange tube and increase the heat transfer coeffi...
Claims
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IPC IPC(8): F25B39/02
Inventor 张哲刘斌王超董小勇
Owner 河北亚通制冷设备有限公司