Small dripping pipe

Abstract

A small dripping pipe (1) comprises multiple annular concave grooves or convex grooves (5) or obstructing sheets (4) machined on the wall of the pipe and small holes (3) which are drilled on the wall of the pipe and communicated with the interior of the pipe. The small holes (3) are arranged within the concave grooves or convex grooves (5), or on the wall of the pipe outside the concave grooves or convex grooves (5) or obstructing sheets (4). The concave grooves or convex grooves (5) or obstructing sheets (4) may be incomplete ring-shaped or spirally coiled on the pipe, too. The small dripping pipe (1) can eliminate surface tension among droplets to prevent deviation of the droplets, thus the droplets are ensured to be dripped uniformly at an equal distance.

Description

Technical field: [0001] The invention relates to a spraying device, in particular to a small dripping pipe in an evaporator and absorber system. Background technique: [0002] In the evaporator and absorber in the main system of the absorption air conditioner, there are small dripping pipes installed above the copper pipes, also known as gravity liquid distribution pipes, which are designed according to the length of the copper pipes of the evaporator and absorber below. There are one or two rows of small holes drilled in the small tube, and the refrigerant water flows out and drops onto the copper tube of the evaporator and the copper tube of the absorber. cold. The traditional small drip tube is an ordinary straight tube. The refrigerant water flowing out of each small hole is attached to each other due to the surface swelling force of the water, and drips from several points in a concentrated manner. The drips are uneven, and the number of drips to the point is far less ...

AI Technical Summary

Problems solved by technology

The traditional small drip tube is an ordinary straight tube. The refrigerant water flowing out of each small hole is attached to each other due to the surface swelling force of the water, and drips from several points in a concentrated manner. The drip is uneven, and the number of drips to the point is far less Number of holes

For example: according to the length of the evaporator and absorber copper tube, the equidistant holes of the small dripping tube are designed to be 10. Due to the surface tension of the water, there are only six or seven points of dripping water, and the evaporator and absorber have 10 holes. 30% or 40% of the parts are not working due to no refrigerant dripping, that is, the above-mentioned dripping small pipes reduce the working efficiency of the evaporator and absorber by 30% or 40%

In addition, it is impossible to install the dripping tube at an absolute level in the evaporator and absorber, and there is always a deviation, which may cause the dripping liquid to flow towards the lower end, causing one end of the dripping tube to drip, and the other parts do not drip, which makes the evaporator evaporator and absorber less efficient

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