SU1693323A1 - Water heating device - Google Patents

Abstract

The invention relates to heat supply systems, in particular, to hot water supply systems with high-speed water heaters connected to a heat supply network of a centralized heat supply. The purpose of the invention is to increase the efficiency of using the temperature potential of the return water of the heating system. This is achieved by the fact that the water heaters 5 of the first and second stages have six temperature points of the sub-mix, the temperature of which is determined in advance by supplying supplying supply water with the minimum allowable temperature, for example t 70 ° C, through the control unit 8 configured as The temperature of the hot water from the second invention relates to heat supply. The aim of the invention is to increase the efficiency of using the temperature potential of the return water of the heating system. FIG. 1 shows the scheme of the proposed device; in fig. 2 is a schematic of the device, a section through the flow distributors, indicating the movement of the heating water. water heater stages for hot water supply to the given flow rate was calculated, for example, 60 ° C. Then, when the flow rate of the heated water changes, the flow rate of the heating supply water is maintained and the heat balance between the heating and heated water is maintained and only the costs change and the temperature at any point of the heat exchange path, both heating and heated water, will remain constant. In such a balanced state, the temperature is measured at temperature points of the submode and registers it for further use. In this mode, the temperature of the return water from the water heater is minimal, and the mode is the most economical. The block 8 is made in the form of a distribution bellows chamber 15 heating system connected to the return main pipeline 4 with bellows 16 installed therein and a coupled damper 18 connected to the latter through the rod 17. A pair of slots 19 are made in the latter and the walls of the chamber 15 It is the mixing of the network water into the path of the water heaters 5. 2 Il. The device contains the feed 1 and reverse. 2 pipelines connected to the respective main pipelines 3 and 4, heating systems, water heaters 5 of the first and second stages, pipelines — cold 6 and hot pipelines, control unit 8. The water heater 5 of the first stage of the inlet and outlet (not shown in Fig.) Along the heating line is connected respectively to the cold water pipeline b and the inlet (to C / s W-J about with CO short-circuits

Description

FIG. not shown) along the heating line of the water heater 5 of the second stage. The outlet (not shown in Fig.) Of the latter is connected to the hot water pipeline 7 via the same line, and the inlet and outlet (not shown in Fig.) Along the cooling line to the inlet pipeline 1 and the inlet (not shown in Fig.) along the same line of the water heater 5 of the first stage, the output (not shown in Fig.) of which is connected to the return pipeline 2 along the same line. The return main pipeline 4 is configured to be connected to the cooling line of the water heaters 5 at selected points 9-14 of the mixture. The control unit 8 is made in the form of a distribution bellows chamber 15 connected to a return main pipeline 4 with a bellows 16 installed in the bellows 16 and a paired flap 18 connected to the latter via a rod 17. The slot holes 19 are made in the latter and the walls of the chamber 15 the walls of the chamber 15 is greater than the width of the slit in the valve 18 and is equal to the working stroke of the bellows 16 divided by the number of submix points. The distance between the slots in the walls of the chamber 15 is equal to the working stroke of the bellows 16, and the distances between the axes of the slots in the valve 18 and the walls of the chamber 15 are equal to each other. The cavity of the bellows chamber 15 is in communication with the cooling line of the water heaters 5 at the points of the kneading through a group of slots in its walls. In this case, the slits in each subsequent group in the course of movement of the bellows 16 are offset relative to the slits of the previous group by the amount of the bellows working stroke 16 divided by the number of submode points.

The device works as follows.

Cold water through the pipeline 6 is fed to the first stage water heaters 5 according to arrow A. Pass the water heaters 5, the water comes out heated through pipeline 7 according to arrow B to the consumer for a hot water supply.

Heating network water through the pipeline 1 is fed to the cooling line of the water heaters 5 of the second stage by countercurrent to meet the hot water in the direction of arrow B and all the water heaters 5 pass through the cooling line.

At the beginning of the heating season, when the temperature of the supply network water exceeds 70 ° C, and the return temperature is 40 °, the network water from the consumer returns from pipeline 4 along arrow G to the bellows chamber 15 of the flow distributor, during this period the bellows 16 of the flow distributor is extremely compressed and open one point 9 mixes. As the return network water temperature rises, for example, above 44 ° C, the bellows 16 expands proportionally as the return water network temperature increases. The bellows 16 closes proportionally to the collapse of the bellows 16 by opening the mix point 9 and proportionally by closing it

When the temperature of the return network water is reached, for example, 50.5 ° С, the second point 10 of the podmes is completely open, the other points of the podmes are closed. With an increase in the temperature of the return mains water, its passage through the water heaters 5 increases. At the same time, the water equivalent of the heating water is stabilized to a minimum, but capable of heating the hot water supply to the calculated temperature

at maximum heat release, to the point of kneading due to deceleration and lowering the flow rate, and after the point of kneading due to lowering the temperature. At the same time, its temperature until the end of the heat exchange path decreases to the minimum (40 ° C) and remains stable (40 ° C) at the outlet of the water heaters 5.

When the temperature of the return supply water rises above 50, -5 ° C in the same way, the second point 10 of the knee mix closes in the same way as the temperature increases and the third of the eleven and the fourth 12 of the mix point opens simultaneously. When the temperature reaches the network

water, for example, 57 ° C is fully open a third of 11 and a quarter of 12 points, all others are closed. Then, when the temperature of the return mains water exceeds 57 ° C, the points 11 and 12 podmes close in proportion to its increase, and the point 13 podmes close when the temperature of the return network water, for example, 63.5 ° C is open, all others are closed. As the temperature rises further, the point closes.

13 and proportional to it and the temperature increase opens point 14 and when the return network water reaches 70 ° С (the minimum design temperature of the heating water is needed to heat the heated water to

maximum rated 60 ° C) water heating for hot water will be provided by the heat of the return supply water.

With increasing temperature, the reverse

network water increases the path of its passage through the cooling line of the water heater 5.

When the temperature of the return water decreases, the cycle from the end of point 14 or the incomplete cycle from any point repeats in reverse order.

The reverse network water automatically predetermines the mixing point and goes into it, forming heating water mixed with the supply network water.

Claims (1)

Claims An apparatus for heating water comprising supply and return pipelines connected to the respective main pipelines of the heating system, hot and cold water heaters, a control unit, the first stage water heater being connected to the heating inlet and outlet respectively. the cold water pipeline and to the inlet through the heating line of the second stage water heater, the latter’s outlet along the same line is connected to the hot water pipeline, and the inlet and outlet through the cooling line with responsibly to the feed conduit and the entrance of a similar line water heater of the first stage, whose output is on the same line is connected to the return line, and the return water main pipeline is configured to be connected to the cooling line water heaters in selected points of the mix, depending on the fact that, in order to increase the efficiency of using the temperature potential of the return water of the heating system, the control unit is made in the form of a distribution system of the bellows chamber with a bellows installed in the back main pipeline connected with the latter through the rod of the twin valve, in the last and the walls of the chamber are slotted holes, combined into groups, the width of each slit in the walls of the chamber is greater than the width of the slit in the valve and equal to the working stroke of the bellows divided by the number of submix points, the distance between the slots in the chamber walls in each group is equal to the working stroke of the bellows, and the distance between the axes of the slits in the valve and the walls of the chamber are equal to each other, the cavity of the bellows chamber communicates with the cooling line water heaters at the points of the mix through the group of slots in its walls, while the slots in each subsequent group are shifted relative to the slots of the previous group by the amount of the stroke of the bellows divided by the number of the points of the mix along the movement of the bellows. J // W figure 1 16 75 FIG. Z