ES2387855B9 - INSTALLATION OF COLD AND HOT WATER FOR CONSUMPTION. - Google Patents

Abstract

Installation of hot and cold water for consumption. # Installation of running water consumption for homes and premises, of the type comprising hot and cold water circuits, the hot water circuit comprising a hot water generator, and at least one common consumption point for both circuits, in which the cold water circuit operates at a lower pressure than the hot water circuit, with means located in the cold water circuit for the evacuation of the volume of water from the hot water circuit , which has a device upstream of the point of consumption that causes a recirculation of water from the hot water circuit to the hot water generator through the cold water circuit until the water temperature reaches a setpoint temperature.

Description

COLD AND HOT WATER INSTALLATION FOR CONSUMPTION

The present invention is intended to give

5

know a hot and cold water installation for

consumption.

More in particular, the present invention is

aimed at increasing water savings and comfort,

especially in water consumption facilities

10

current (both existing and newly built)

that have hot water and water circuits

cold and common consumption points for both circuits

such as running water installations

of the houses.

fifteen

In these facilities, when the user

request hot water at a point of consumption,

usually the tap must wait a certain time

until the temperature of the water leaving the point

of consumption reaches the required temperature. This is a

twenty

inconvenient and usually the water is let out by

the drain until it reaches the temperature

required by the user. This implies an expense

unnecessary water and heat output.

To solve the exposed problem, the

25

documents ES2219198, ES 2222848 and ES2319081 give

learn about cold water consumption facilities and water

hot with a hot water generator and a point

common consumption of cold water and hot water in which,

at the point of consumption, a device is placed that

3 o

brings the hot water from the circuit that has not yet

reached the desired temperature to the water circuit

cold for subsequent recirculation to the generator

hot water, with the consequent saving of water and

heating needs in the water generator

hot. However, this solution presents some

inconvenience First, it is necessary to use

special faucets or add a device. That

5

hinders its replacement. On the other hand, placement in

the point of consumption restricts the possibilities

construction of the device to be added, both by size

as per compatibility requirements with the

surrounding environment. On the other hand, although the

10

Savings achieved are very important, it is always

desirable to achieve greater savings.

To achieve your goals, present

invention consists of a cold water installation and

hot for consumption, of the type comprising circuits

fifteen

of cold water and hot water, comprising the

hot water circuit a hot water generator,

and at least one common consumption point for both

circuits, in which the cold water circuit operates at

lower pressure than the hot water circuit,

twenty

providing said installation of a device that

allows the passage of water from the hot water circuit to the

cold water circuit, and means to recirculate

the water in the cold water circuit from the

hot water circuit to the water generator

25

hot, and in which said device that allows the

passage of water from the hot water circuit to the circuit

cold water is a by-pass operated by a

valve, preferably governed by temperature

of the hot water circuit, which connects two points

3 o

of the hot water circuit and the water circuit

cold located upstream of at least one point of

common consumption, preferably at least two. The valve

allows the passage of water not hot enough from the

hot water circuit to the cold water circuit until the temperature of the hot water circuit reaches a certain temperature or setpoint temperature.

Preferably, the device for allowing the passage of water from the hot water circuit to the cold water circuit will be placed at a point where the pipes of both circuits are close to each other, preferably less than 50 cm, more preferably less than 40 cm .

In accordance with the present invention, all common consumption points (faucets, showers, bidets) of a room of a dwelling or similar (such as a room) may share a single device, which can be advantageously placed on the wall of the room , for example recessed. The device will preferably have a user control (such as a button) to activate the operation of the device / valve, as well as, preferably, a warning that the water temperature is as desired.

The present invention not only makes it possible to share a device to several common consumption points (for example a faucet and a shower in a bathroom) with cost savings, but also allows a location where a solenoid valve can be freely placed that can be fed from the electrical network of the house. In addition, the new invention allows greater energy savings. In effect, the device will allow the passage of hot water if the temperature upstream of the device is adequate. If it is of beginning (for example because there has been a previous consumption a point of consumption different from the one of interest at that time), there will be no water recirculation, with the energy saving for the pump, even if consumption is requested

from a different point of consumption, something that did not occur in facilities of this type until now known.

Other embodiments of the present invention also coincide with preferred embodiments indicated in documents ES2219198, ES 2222848 and ES2319081.

For better compression, some drawings of preferred embodiments of the present invention are attached by way of explanatory but not limiting example.

Fig. 1 is a diagram of a water consumption installation according to the present invention.

Figure 2 is a diagram of another similar installation, with two consumption points, a single saving device.

Figure 3 is a diagram of an embodiment of the saving device that allows the passage of water from the hot water circuit to the applicable cold water circuit.

Figure 4 is a diagram of a possible spatial arrangement of the points of consumption and the saving device like those of Figure 2 in the bathroom of a house.

The example shown in Figure 1 corresponds to a running water installation of a dwelling, composed of a first common section -1-with a cut-off tap -2-, a hot water circuit -3- and with boiler system - 31-, a cold water circuit -4 with a pressure regulator of said circuit -9- and, at least, a consumption point -7-, in this case a tap for hot and cold water.

The -4-cold water circuit is located in

situation of lack of consumption, at a working pressure lower than the working pressure of the hot water circuit -3-. This can be achieved by means of two pressure regulators located at the beginning of the cold water circuits -4- and hot water circuits -3-, regulated at different pressures. Or, as in the example, the same effect can be obtained by a pressure reducer -8-located in the cold water circuit. Said reducer -8-is located upstream of the means -13-, -5-, -6-, -9-to recirculate the water in the cold water circuit from the hot water circuit to the hot water generator -31-. Also of characteristic form, the circuit of cold water -4-has means to evacuate a volume of water that can come to him through a device -100-that allows the passage of water from the hot water circuit -3-to the circuit of cold water -4-. In the example shown, this is achieved by a bypass with a pump -13- to drive water from the cold water circuit to the hot water circuit -3-. The pump is governed by pressure sensors -5-, -6-that activate the pump when they detect a certain pressure in the cold water circuit or a pressure equalization between the hot water and the cold water circuit. An electrovalve -9-also governed by the pressure sensors has also been arranged to avoid unwanted reflux or pressure shock.

In addition, the installation has another additional bypass that connects the cold water circuit with a hot water circuit point upstream of the hot water generator -31-. Said bypass has a valve governed -8'-, being governed by a sensor

of pressure that sends an opening order when it is detected that the pressure in the cold water circuit falls below a certain value. In this way when cold water is requested from a point of consumption, the pressure with which the cold water arrives corresponds to the maximum pressure of the circuit and not to the reduced pressure of the cold water circuit.

The operation of the second by-pass with the solenoid valve -8 '-and various embodiments are discussed in document ES2319081.

Figure 2 shows the scheme of another installation in which a single device -100- to allow the passage of water from the hot water circuit to the cold water circuit feeds two common consumption points: a tap -7- and a shower -7'-. In Figure 2 the same or similar elements have been marked with identical numerals and will therefore not be explained in depth.

Both figure 1 and figure 2, the circuit is completed with non-return valves -14-in those places where it is considered necessary or recommended.

Figure 3 shows a possible embodiment of the device -100- to allow the passage of water from the hot water circuit to the cold water circuit. The embodiment shown consists of an H element that is inserted into the installation, whose intermediate pipe corresponds to a bypass between the hot water -3- and cold water -4- circuits. The bypass has a solenoid valve -105-, such as a direct-acting solenoid valve powered from an electricity installation, and an electronic control card -101-, as well as the

corresponding power supply means of the card and solenoid valve, such as wiring, connections for mains or batteries, etc ... (not shown in the drawings). All this is located inside a work box -102- (for example a Fibox type box).

In figure 4 an application in a bathroom of an installation similar to that of figure 2 and a device -100-like that of figure 3 has been shown schematically. The device -100-is embedded in the wall and has a surface exterior -103-with a button -104-device actuation -100-. The -104-button is bright. When the button -104 is activated, the solenoid valve -105-Y is activated and recirculates the water from the hot water circuit -3-to the cold water circuit -4-. The button lights up in one color. When the water temperature reaches the setpoint temperature (eg 37 ° C) the button changes color indicating that hot water is already available at the consumption points -7-, -7'-.

A more detailed discussion of different installation details other than those of the arrangement and characteristics of the -100-saving device that allows the passage of water from the hot water circuit to the cold water circuit shown in the examples, as well as of alternatives to them, it

describe

in the documents ES2219198, IS 2222848 Y

ES2319081.

Yes

good the invention be he has described with

With respect to examples of preferred embodiments, these should not be considered as limiting the invention, which will be defined by the broader interpretation of the following claims.

Claims (14)

1. Installation of hot and cold water for consumption, of the type comprising cold water and hot water circuits, the hot water circuit comprising a hot water generator, and at least one common consumption point for both circuits, in which the cold water circuit operates at a lower pressure than the hot water circuit, said installation having a device that allows the passage of water from the hot water circuit to the cold water circuit, and of means for recirculating the water in the cold water circuit from the hot water circuit to the hot water generator, characterized in that said device that allows the passage of water from the hot water circuit to the cold water circuit is a by-pass operated by a valve that connects two points of the hot water circuit and the cold water circuit located upstream of at least one point of common consumption.

2.

Installation according to claim 1, characterized in that said device allowing the passage of water from the hot water circuit to the cold water circuit is located by connecting two points of the hot water and cold water circuit located upstream of at least two points of common consumption

3.

Installation according to claim 2, characterized in that said valve of the device that allows the passage of water from the hot water circuit to the cold water circuit is an electrovalve governed by the temperature of the hot water circuit, in such a way that it allows the passage of water

Hot water circuit to the cold water circuit until the temperature of the hot water circuit reaches a certain temperature.

Four.

Installation, according to any of claims 1 to 3, characterized in that at the point where said device is located to allow the passage of water from the hot water circuit to the cold water circuit, the hot water circuit pipes and of the cold water circuit are at a distance of less than 50 cm from each other.

5.

Installation, according to claim 4, characterized in that at the point where said device is located to allow the passage of the hot water circuit to the cold water circuit, the pipes of the hot water circuit and the circuit of

Water

cold be they find to a distance between yes

less than

40 cm.

6.

Installation, according anyone from the

claims

one to 5, characterized why he

device to allow the passage of water from the hot water circuit to the cold water circuit has a user-operated control that activates the operation of said device.

7. Installation according to any one of claims 1 to 6, characterized in that said device is in a room of a house

or local, upstream of all the points of common consumption existing in that stay.

8.

Installation according to claim 7, characterized in that the control of the device to allow the passage of water from the hot water circuit to the cold water circuit is located in a wall of the room.

9.

Installation according to any of claims 2 to 8, characterized in that said device for allowing the passage of water from the hot water circuit to the cold water circuit further comprises an electronic control board and means of

solenoid valve power.

electric from the card Y the

10. Installation, claims 1 to installation presents a

according to 9, chaser anyone bristling by pressure that in las la el

cold water circuit to reduce the working pressure of the cold water circuit due to the work pressure or the hot water circuit, said reducer being located upstream of said means for recirculating the water in the water circuit cold from the hot water circuit to the hot water generator. 11. Installation according to any one of claims 1 to 10, characterized in that the means for recirculating the water in the cold water circuit from the hot water circuit to the hot water generator comprise a pump and pressure sensors that govern the operation of said means to make the water recirculate. 12. Installation according to claim 11, characterized in that the means for recirculating the water in the cold water circuit from the hot water circuit to the hot water generator comprise an electrovalve governed by the pressure sensors that govern the cited bomb. 13. Installation according to any of claims 1 to 12, characterized in that the circuit further comprises another bypass between the cold water circuit and an area of the hot water circuit before the hot water generator that has a valve governed by a pressure switch that sends an opening order when the pressure of the 5 circuit of cold water low of a certain value. 14. Installation according to any of claims 1 to 13, characterized in that the cold water and hot water circuits have a common feeding point thereto. • 1 ---- t? \  FIG. L   • I r ---- .., 100 1 I I II {ff I I 31 ---. I I 7 I I I  L ____. J / 14 F\ T  13 // 3. 4 one FIG. 2