CS240668B1 - Exchanger for recycling wastewater heat - Google Patents

Abstract

The purpose of the invention is to separate hot water used for pre-heating utility water in a simple way. The stated purpose is achieved by an exchanger for recycling heat from waste water, the essence of which lies in the fact that it consists of a sump, which has channels formed at the wall with the waste water supply pipe, bounded by a separating wall with partitions, the height of which is less than the height of the sump, opening at the bottom and top, where a hollow plate is placed, under which other hollow plates are mounted diagonally in tiers, alternately with the opposite slope, through which water flows from the water supply system to the afterheater and cover the sump so that the upper hollow plate forms a narrow gap at the opposite wall of the outlet openings for the water to drain to another hollow plate, which forms a narrow gap under the outlet channels for the water to drain to another hollow plate, and in the lower part of the sump is placed a drain with an overflow.

Description

The invention relates to a heat exchanger for waste heat recovery #

Today, recycling of wastewater heat from eg bathrooms, laundries, kitchens for domestic water preheating due to the necessity of mixing with cold water brings little heat gain, and therefore their implementation is rare. a thermally insulated sump having channels formed by a partition wall 8 at the wall with the waste water inlet pipe, the walls of which are less than the sump height, the channels opening at the bottom and top through the outlet openings into the sump space such that a plate with a slope to the opposite wall of the sump is placed and above the desx there is a meandering arrangement of a tubular register for water flow from the water supply system and an outlet with an overflow is located in the bottom of the sump This device has a disadvantage in a small heat exchange area. Wastewater β higher temperature.

This drawback of the known devices is largely eliminated by the waste water heat exchanger according to the invention, which is based on the fact that at the level of the upper outlet openings of the separators there is a hollow plate below which other hollow plates are alternately mounted. Plates through which water flows from the water main to the after heater and cover the sump so that the upper hollow plate forms a narrow gap at the opposite wall of the outlet openings for water drainage to the next hollow plate which forms a narrow gap for water drain under the outlet openings. and at the bottom of the pit is located from the overflow flow #

The benefits of a heat exchanger to recycle wastewater are mainly higher heat recovery from lower temperature wastewater #

- 2 240 βββ

An exemplary embodiment of a waste water heat exchanger is shown schematically in the attached drawing, where a vertical section of the exchanger is shown.

According to the waste water heat exchanger, it consists of a thermally insulated well 2, which has channels 2 delimited by the inlet pipe J from the sludge ducts 2 delimited by a separating wall ^{28 with} partitions 6 whose height is less than the insulated well. at the bottom and at the top of the outlet openings 2 into the space of the insulated well 2 so that at the level of the upper outlet openings 2 there is a hollow plate 8 inclined to the opposite wall of the well 2. plate 8 connected via line 13 to the inlet 14 of mains water and outlet 15 for heated water dohřívači® hallow plates 8 overlap isolates the reservoir 2 so ^that the upper tube plate 8 form with the opposite wall of outlet openings 2 a narrow gap 2 P ^ro water outflow at the bottom a hollow plate 8, which forms a further narrow gap 2 under the outlet openings 2 and a drain 10 with an overflow 11 is located at the bottom of the insulated well 2.

In a waste water heat exchanger, the waste water is routed through a dirt trap directly to a thermally insulated thermowell 2 via a hot water separator formed by vertical channels 2 at the bottom and top that exit into the thermally insulated thermowell space. buoyancy of water against cooler water in the sump 2 causes spontaneous flow of water upwards, from where the sloping hollow plate 8 flows onto the other hollow plate 8 hinged thereto, through which water from the water main flows to the after heater and cooled water flows to the bottom of the insulated sump 2 ^ from where it is pushed to the sewer ·

Claims (1)

SUBJECT OF THE INVENTION 240 668 Waste water heat exchanger, consisting of a thermally insulated sump, having channels on the wall with the waste water inlet ducts formed by ducts bounded by a separating wall with partitions whose height is less than the sump height, downstream and downstream, characterized by: a hollow plate (8) is located at the upper outlet openings (7), under which other hollow plates (8) are fastened obliquely by an inclined, alternately β opposite incline, through which water from the water main flows to the after heater and overlaps the thermally insulated sump that the upper hollow plate (8) forms a narrow gap (9) at the opposite wall of the outlet openings (7) for water drainage to the lower hollow plate (8), which forms another gap (9) below the outlet openings (7) an outlet (10) with an overflow (11) is placed on another hollow plate (8) and in the lower part of the well (1).