SE517841C2 - Controlling hot water temperature in domestic water supply system, by removing water via valve connected to storage tank and heat exchanger - Google Patents

Abstract

Mains water is divided between a cold water cycle for immediate consumption and a hot water cycle (6) where the water is heated by a prim. heat source and then stored in a tank, from where some of the water is fed directly to a valve (11) and some is fed to the valve via a special heat exchanger (5). The valve can be connected directly to a point where hot water is removed and is used to regulate the temperature of the water being removed to the desired level of e.g. 55 deg.C. The valve is controlled by a sensor (12). An Independent claim is also included for the control system.

Description

20 25 30 35 40 45 517 841 2 When the water temperature rises to up to 70 ° C, tal ertal is killed by these dormant microorganisms.

The overall object of the invention is to ensure the best possible water quality by controlling water flows for the longest time with both low water temperatures and high water temperatures.

The cold water fate is mixed with the hot water fate at the intended temperatures for consumption water. The mixing should take place in connection with the time of consumption.

Brief description of the inventive power.

The present invention relates to a method and apparatus for determining the water temperature for domestic hot water in immediate connection with consumption. The invention is defined by the appended claims.

Brief description of the accompanying drawings.

The invention will be described in more detail below with exemplary embodiments with reference to the accompanying drawings, in which the same numerals in the figures indicate corresponding parts.

Fig. 1 F flow chart showing the principle of the invention.

Detailed description of the invention tariff Fig. 1 shows an incoming cold water desolation (1) whose temperature is usually stated to +5 - 10 ° C.

Cold water fl fate (1) is normally divided into a fl fate (2) to supply cold water for various installations (3), while a cold water fl fate (4) continues to a special hot water exchanger (5).

Cold water fl fate (4) proceeds to a primary heating system with an exchanger (7), in which a heat loop (8), from a heat source (9), transfers heat energy to cold water fl fate (6), after which the heated cold water fl fate (6) is collected in an accumulator ( 10).

From the accumulator (10), the heated water continues (6), with a temperature of about 70 ° C, to the special device of the invention in the form of a heat exchanger (5). From the heat exchanger (5), the water flow (6) continues via a valve (11) which regulates the temperature of the water flow (6) via a sensor (12).

Inside the heat exchanger (5), the heated water fl fate (6) gives off energy to the cold water fl fate (4).

The cold water fl fate (4) is preheated inside an exchanger (5) with energy from the hot water fl fate (6), and then continues to the exchanger (7) for further heating with energy from the primary heat source (9).

The water fl fate (6), after the accumulator taric (10), usually reaches a water temperature of 70 ° C and continues partly through the special heat exchanger (5) and partly through a supplementary fl fate (13) through the valve (11). 10 15 20 25 30 35 40 45 50 n Q u Q nu n o o o n ø Q n a o n 517 841 3 A sensor (12) now controls the water temperature in fl fate (14) by mixing water from the flow (6) and from fl fate (13). A sensor (12) can, for example, regulate a valve (11) to let through a water fl (14) with a temperature of 55 ° C.

The procedure with the built-in exchanger (5), the valve (1 1), the sensor (12) and the fl fate (13) means that the water fl fate from fl fate (1) to fl fate (14) can be controlled to temperatures that counteract the growth of harmful microorganisms.

The present invention is not limited to those described above and shown in the diagram, but can be changed and modified in many different ways according to the needs that have arisen within the scope of the inventive concept stated in the claims.

Claims (2)

517 841 ~; _ @ ll PATENT REQUIREMENTS. A method for producing hot water without bacterial growth, wherein cold water (4) is led to a first heat exchanger (5) and preheated, after which said water stream is led to a second heat exchanger (7) and heated to a killing temperature and the water is then led, in whole or in part. to the first heat exchanger (5) where the temperature of the heated water is reduced as it preheats cold water and can be led without passing heat exchanger (5) to a mixing valve (11) for mixing with the cooled hot water characterized in that the second heat exchanger (7) is fed from a heat source (9) via a friend loop (8), and that the water in the heat exchanger (7) is led to an accumulator tank (10), and that the mixing of the water takes place in connection with the tapping point. Device for producing hot water without bacterial growth, which comprises the following devices in the flow direction of the water: a first heat exchanger (5), a second heat exchanger (7), a branch line (13) and a mixing valve (1 1) characterized in that the second heat exchanger (7) is fed with heat by a heat loop (8) obtained in a source of friend (9), and that in the first friend exchanger (5) preheated water is killed by bacteria in the heat exchanger (7) and that the water is led to an accumulator tank (10) before meets the incoming cold water in the first heat exchanger (5) or is partially passed through the branch line (13) to mix in the mixing valve (1 l) with the hot water that has passed the friend exchanger (5), and that this valve is located adjacent to the tapping point for the hot water.