CS232542B1 - Reflux condenser for mining air condition system - Google Patents

Abstract

The return air cooler for cooling air condensate coolant from the air consists of a housing with functionally interchangeable inlet and outlet ports. placed opposite each other at an unequal horizontal level. A tubular heat exchanger with vertical slats and nodes, intersecting side walls outside the chilled liquid housing from the air conditioner and above, or below, a vertical spray water spray to increase the cooling effect of the return air flow through the exhaust air to the expander winds from the mine. The direction of flow of cooling air through the heat exchanger is vertical.

Description

(54) A reflux condenser for air-cooled condensate cooling of mine air conditioners

The return condenser for air condensate cooling of the mine air conditioners consists of a housing with functionally interchangeable inlet and outlet ports. placed against each other on an unequal horizontal level. A tubular heat exchanger with vertical slats and elbows is placed in the housing between the sockets, _{in the} transverse side walls outside the chilled-liquid housing from the air conditioner and above or below the water spray with a vertical spray to increase the cooling effect. blowing winds from the mine. The direction of cooling air flow through the heat exchanger is vertical.

232542 2

BACKGROUND OF THE INVENTION The present invention relates to a reflux condenser for cooling air condensate coolant of mine air conditioners.

The condensation heat from the cooling equipment used in the air conditioning of the underground mines working environment is removed by cooling water to the exhaust air from the mines by means of reflux condensers. The known reflux coolers manufactured for this purpose consist of a housing with inlet and outlet throats of the conveyed cooling air, a tubular water spray and a tubular heat exchanger with an extended lamellar heat exchange surface, usually in the form of a lamella block. At the bottom of the reflux cooler there is a bathtub for collecting shower water. The reflux condenser housing has a substantially upright block shape, whose vertical narrower front walls form a rectangular inlet for cooling air. This inlet opening is provided with a transition piece for connecting the fan. A vertical tubular register - water shower is built into the inlet. The side parts of the return cooler consist of rectangular lids which are tightly connected by screws to the tub. The cooling air outlet port is opposite the inlet port and is substantially at the same horizontal level therewith. The actual tube heat exchanger with an extended heat transfer surface is of conventional construction and is arranged so that the cooling air flows horizontally and thus perpendicularly to its tubes. The cooled cooling water flows through the heat exchanger tubes and is led back to the air conditioning refrigeration plant. In the direction of flow of the cooling air, water is sprayed with the water spray, which increases the cooling effect. Spray water into. It fits down to the lamella surface of the heat exchanger and flows down the lamellas into the radiator.

A disadvantage of these known reflux coolers for cooling the coolant of the condensate of the mining cooling devices is that the air cooling takes place in a horizontal plane, and the wetting of the heat exchanger surfaces of the heat exchanger itself is uneven due to gravity. The inlet surfaces and especially the lower parts of the heat exchanger are most wetted, while the last rows of tubes in the air flow direction, especially the upper part of the surface, are already completely dry in operation so that the cooling surface is not economically utilized. This leads to the necessity of building large heat exchangers and increasing the power input of the electric motors of the fans to achieve greater air pressure. The consumption of water and electricity per unit of heat output of the reflux condenser is then relatively high.

These drawbacks are eliminated by a reflux condenser for cooling the condensate coolant of the mine air conditioners with air according to the invention. Its essence is that functionally interchangeable inlet and outlet ports are formed in the housing adapted to connect a water separator and a fan. The necks are situated opposite, but on an unequal horizontal level below and above the lamella block with vertical slats. The lamella block is mounted in the vertical part of the casing so that its tubular snake is guided successively in horizontal planes across the vertical part of the casing. The nodes of the tubular snake extending outside the housing are welded to through holes in the longitudinal vertical walls of the housing. The water spray with vertical washer is placed horizontally on the return cooler housing in two possible alternatively above or below the lamella block. The shower openings are always facing the lamella block.

An advantage of the reflux condenser for cooling the condensate of air-conditioners in the air according to the invention is that it utilizes the vertical air flow through the heat exchange surface of the reflux condenser. The vertical flow, into which the water spray with the vertical spray is supplied, distributes water evenly over the entire heat transfer surface. The surface is perfectly wetted and used for heat transfer. The amount of water required for the reflux condenser according to the invention is much smaller in comparison with known return condensers with horizontal cooling air flow, the thermal effect being higher. The specific electricity consumption related to the dissipated heat output is also reduced by approximately 25%. The design of the reflux condenser according to the invention allows for several variants of cooling air flow and water spray according to the space available at the workplace. It is also technologically and industrially advantageous to position the elbows of the tubing snake outside the return cooler housing.

An exemplary embodiment of a reflux condenser according to the invention is shown schematically in the attached figure.

It consists of a housing χ with an inlet throat 2 and an outlet throat χ of the cooling air, t Both throats 2 and χ are functionally interchangeable depending on the directions (S, S,) of the air flow.

They are situated opposite, but on an unequal horizontal level below and above the lamella block χ. A water separator and a fan which can be mounted in one of the throats * X> or in the transition piece in a conventional manner are not shown in the drawing. The heat exchange lamella block χ with vertical slats is placed in the housing X at a horizontal level between the two necks χ, χ. The tubular snake χ of the lamella block χ is routed in horizontal planes across the vertical housing χ. The nodes of the tubular snake χ extend outside the actual housing χ and are welded to through holes in the longitudinal vertical walls of the housing χ. In the exemplary embodiment, the water shower 6 is positioned above the lamella block χ in the upper part of the housing χ, which in the lower part is provided with a bath 7 for collecting shower water.

The reflux condenser according to the exemplary embodiment operates so that the flow of cooling air flows through the inlet throat 2 in the direction S with the heat exchange surface of the lamella block χ and leaves the outlet throat X from the reflux condenser. The entire surface of the lamella block χ is uniformly sprayed from the water spray 6 in the direction χ of the air flow. The condensate cooling fluid supplied from the air-conditioning system passes through the tube coil X and is cooled by the combined action of the air drawn into the so-called ejection winds from the mines and shower water, which lowers the flow temperature of the return air and thereby increases its cooling effect.

The design of the reflux condenser according to the exemplary embodiment allows for the functional exchange of the sockets 2, X and the air flow in the S-direction from the bottom up. This creates a countercurrent of shower water to increase the turbulence of the air flow.

Claims (3)

SUBJECT OF THE INVENTION 1. A reflux condenser for air-cooled condensate cooling of mine air conditioners, consisting of a housing with inlet and outlet throats of the conveyed cooling air, a tubular water spray for cooling the air, a lower tub for collecting shower water and a tubular heat exchanger with extended lamellar heat exchange surface in the form of a fin block for cooling the coolant, characterized in that the functionally interchangeable inlet and outlet sockets (2, 3) adapted to connect the water separator and the fan are situated opposite to the housing (1) but unequally horizontal below and above a lamella block (4) with vertical slats, which is mounted in the vertical part of the casing (1), so that its tubular snake (5) is guided in horizontal planes across the vertical part of the casing (1) sk In (1) are welded to the passage openings in the vertical walls of the elongated housing (1), and a water shower (6) is in a vertical injection of the housing (1), the reflux condenser is placed horizontally. 2. A reflux condenser according to claim 1, characterized in that a horizontal water shower (6) whose shower openings face the lamella block (4) is located above the block (4). AND A reflux condenser according to claim 1, characterized in that a horizontal water shower (6) whose shower openings face the lamella block (4) is located below the block (4).