ES2368325B2 - SYSTEM AND CONDENSER DEVICE FOR COLLECTION OF WATER OF THE ENVIRONMENT. - Google Patents

Abstract

Condensing system and device for collecting water from the environment. The condensing device (26) comprises: # - two peltier cells (1,2); # - heat dissipating means (4) in contact with the hot face of the peltier cells (1,2); # - a condensing surface (6) in contact with the cold face of the peltier cells (1,2); # - a cabin (9) to house the peltier cells (1,2), delimiting a cold chamber (10) and a hot chamber (11 ), with openings for the air outlet (13.15) in both chambers (10.11) and adjustable opening (14) for the air inlet in the cold chamber (10); # - relative humidity sensing means (17 ) and temperature (16) of the air inside the cold chamber (10); # - temperature sensing means (7) of the condensing surface (6); # - collection means (18,19,20, 21) of the condensed water on the condensation surface (6).

Description

Condensing system and device for collecting water from the environment

TECHNICAL SECTOR

The invention falls within the scope of devices for obtaining water for irrigation. Within them, those who obtain water from the environment.

The present invention can be used to obtain water in areas with little rain, from water vapor present in the air, for application to irrigation in the early stages of tree planting. In these areas, high solar irradiation usually coincides with times of water scarcity, which makes photovoltaic energy recommended for the system power.

BACKGROUND OF THE INVENTION

There is a need to obtain water for irrigation of young trees in areas with a shortage of it from rain. In the initial phase of roots of young trees, the amount of water necessary for them to survive and grow at the hardest times of the year can be obtained from water vapor present in the environment. In these times the solar irradiation is also greater so it can be used as a primary energy source. The use of a system that consumes the minimum energy to obtain such water is essential to reduce costs.

There are some patented inventions related to the current application. Some use peltier cells for water condensation, although without great efficiency.

The invention described in US4146372 describes a system for condensing water from the environment but without a condensation surface, by means of absorbent materials.

The inventions described in patents US4182132 and US4255937 describe systems for condensing ambient water using a compressor instead of peltier cells, which adds more moving parts to the system. They do not control the temperature of the condensation zone.

The invention described in US7559204 describes a system based on peltier cells to condense water, but it does not allow the temperature of the condensation zone to be adjusted.

The inventions described in patents US4433552 and US5149446 describe a system for condensing ambient water using peltier cells. They enable the system to be activated depending on the ambient temperature or humidity, but do not vary the condenser temperature according to the dew point.

The invention described in US4315599 describes a system for condensing water for irrigation based on peltier cells. The control of the tension that reaches the peltier cell is done by a system based on a manual selector, not automatic.

The invention described in US6581849 describes a system for condensing water for irrigation based on peltier cells. This system focuses on the design of the condensation surface but does not control the relative humidity and ambient temperature for the adjustment of the condenser temperature with respect to the dew point.

Finally, the invention described in DE102008064185 proposes a water condensation system for irrigation with peltier cells, with control of the temperature of the cold part but without a water collection system that prevents partial evaporation of it.

DESCRIPTION OF THE INVENTION

It is a device capable of obtaining water from the environment by condensing the moisture present in the air. To condense the water, a surface is required at a temperature low enough for the water to pass from a gaseous state or water vapor to a liquid state or water itself. The temperature at which said surface should be must also not be too low to prevent the freezing of condensed water, which implies an extra supply of unnecessary energy. This temperature depends on the environmental conditions of the moment; basically temperature and relative humidity of the environment. It is also important that water is collected before it evaporates again.

The described system includes an electronic device called a peltier cell formed by two flat ceramic plates that enclose the elements that, when faced with a voltage application, one of the plates increases its temperature while the other reduces it with respect to the ambient temperature. Controlling the temperature of the cold plate so that it is slightly below the condensation temperature (calculated at any given time) and collecting the water that is deposited on it before it evaporates again (by means of a vibration mechanism or by the thrust of a brush) achieves an efficient use of energy to obtain water with peltier cells. The vibration of the condenser is carried out from time to time and at an adjustable frequency to optimize the energy used.

The system can be fed with photovoltaic energy and used in areas with high solar irradiation and low water in the field becoming an autonomous system for obtaining water in areas of lack thereof.

In the present invention, the temperature control of the condenser based on peltier cells is automatically taken into account by means of digital control that allows feedback control and thus giving the cell the exact energy calculated. The control of this system takes as a reference the dew point inside the chamber (where it will be more precise) so as not to use unnecessary extra energy. The main advantage of the system is the sum of the temperature control and the collection of water based on vibration of the cold surface previously sprayed with an anti-fog emulsion. The use of a brush that pushes the water to be collected is also proposed as an alternative to vibration. The mechanism chosen in previous inventions of the state of the art is the fall by gravity of the water.

The system for collecting water from the environment object of the invention comprises:

-

a condensing device which in turn comprises:

• at least one peltier cell;

•

heat dissipating means in contact with the hot face of the at least one peltier cell;

•

a condensation surface in contact with the cold face of the at least one peltier cell;

•

a cabin to house inside the at least one peltier cell, delimiting on both sides a cold chamber and a hot chamber, said cabin having at least one opening for the air outlet in both chambers and an adjustable opening for the entrance of air in the cold chamber;

•

relative humidity and air temperature sensing means inside the interior cold room;

• condensing surface temperature sensing means;

•

means for collecting condensed water on the surface of the condenser; and -control means configured for:

• obtain the measurements of the different sensor means;

• obtain the dew temperature Tr of the air contained in the cold chamber from the measurements of the relative humidity and air temperature sensing means inside the cold chamber;

• check at least one peltier cell based on the difference between the dew temperature Tr and the temperature of the condensation surface. In a preferred embodiment the condensing device comprises

additionally temperature sensing means of the heat dissipating means, whose information is received by the control means. The control means may be configured to deactivate at least one peltier cell when the temperature of the heat dissipating means exceeds a certain limit.

The condensing device preferably further comprises cooling means of the hot chamber, for example a fan, the control means being responsible for controlling the activation of said cooling means.

In a preferred embodiment, the control means are configured to determine the difference between the dew temperature Tr and the temperature of the condensation surface and, when said difference is less than a certain threshold, activate the at least one peltier cell. The control means may be configured to effect the activation of the at least one peltier cell for a time proportional to the difference between the dew temperature Tr and the temperature of the condensation surface.

The condensing device preferably comprises a support of low thermal conductivity in which the at least one peltier cell is embedded.

The water collection means may comprise a duct located below the condensation surface and a collection tank. The water collection means can also comprise actuator means acting on the condensation surface.

In a preferred embodiment, the actuator means comprise a vibrating mechanism responsible for generating vibrations of the condensation surface. The condensing device may in this embodiment comprise a flexible frame that incorporates the condensation surface and is in contact with the vibrating mechanism.

In another embodiment, the actuator means comprise a scanning mechanism responsible for sweeping the condensation surface to push the condensed water thereon.

The system may additionally comprise a solar panel, a charge and consumption regulator and a battery for powering the system.

The condensation surface preferably has anti-fogging properties to improve water collection.

Another aspect of the present invention is a condensing device for collecting water from the environment, which comprises:

-

at least one peltier cell;

-

heat dissipating means in contact with the hot face of the at least one peltier cell;

-

a condensation surface in contact with the cold face of the at least one peltier cell;

-

a cabin to house inside the at least one peltier cell, delimiting on both sides a cold chamber and a hot chamber, said cabin having at least one opening for the air outlet in both chambers and an adjustable opening for the entrance of air in the cold chamber;

-

relative humidity and air temperature sensing means inside the interior cold room;

-

temperature sensing means of the condensing surface; Y

-

means for collecting condensed water on the surface of the condenser.

BRIEF DESCRIPTION OF THE DRAWINGS

A series of drawings that help to better understand the invention and that expressly relate to an embodiment of said invention which is presented as a non-limiting example thereof is described very briefly below.

Figure 1 shows the support with the peltier cells used in the invention.

Figure 2 represents the hot side of the support with the peltier cells.

Figure 3 represents the cold side of the support with the peltier cells.

Figure 4 represents the condensing device.

Figure 5 represents the vertical scanning mechanism of the condensation surface by means of a brush.

Figure 6 shows a preferred embodiment of the system object of the invention.

DESCRIPTION OF A PREFERRED EMBODIMENT

As shown in Figure 1, the peltier cells (1,2) are arranged as the core of a "sandwich." The peltier cells (1,2) are embedded in a support 3 of non-heat transmitting material. As shown in Figure 2, a heat sink 4, preferably aluminum, is attached to the hot side of the cells, and a sensor 5 is placed to control the temperature on the hot side. On the cold side, shown in Figure 3, a condensation surface 6 is coupled, a surface to be cooled with low thermal resistance, the temperature of which is controlled by measuring probes 7.

The assembly described above is mounted on a flexible frame 8, shown in Figure 4, and is fitted inside a cabin 9. This flexible frame 8 marks the separation between the cold chamber 10 and the hot chamber 11. The flexible frame 8 allows the condenser to vibrate (the surface to be cooled 6) to improve water collection.

The hot part is cooled by a fan 12 introducing outside air that comes out of density difference through holes in the upper part

13. On the cold side, the air inlet is regulated by a movable cover 14 that comes out through holes in the bottom 15. The dew point calculation uses a temperature probe 16 and a relative humidity probe 17 located in the Inside the chamber on its cold side. The water that emerges from the condenser falls through a conduit 18 to a reservoir 19. To improve the collection a vibrator 20 is used. Instead of a vibrator, a vertical water sweeping mechanism can also be used by means of a brush 21 as is It is represented in Figure 5, which would act periodically.

As shown in Figure 6, the complete system comprises a solar panel for power 22, a charge and consumption regulator 23, a battery 24, a condenser power control system 25 and the condenser device 26 of Figure 4 The objective is to water young trees 27.

The control procedure carried out by the control system 25 is described below. Temperature and relative humidity data are taken from inside the condensation chamber, to calculate the dew point. The following simplified formula can be used to determine the dew point:

Pr = 8 H • [112+ (0.9 • T)] + (0.1 • T) −112

where H is the relative humidity in% measured by the relative humidity probe 17, T is the ambient temperature in Celsius measured by the temperature probe 16 and Pr is the temperature in Celsius of the dew point.

To control the operation of the condenser, the three-point temperature of the cold part of the condenser is taken and the average thereof is made, which represents the average temperature of the condensing surface. The temperature of the hot side is also taken by means of a probe at the central point of the heatsink

5 as close as possible to the point of contact with the peltier cells on their hot side.

Depending on the difference between the temperature of the cold part of the condenser and the dew point, a control proportional to that difference is applied. For this, the temperature difference is multiplied by an adjustable proportional constant according to the particularities of the device location. The result of

10 said multiplication marks the time that the peltier cells are fed and therefore generating cold in the cold face. At the end of this time, the difference between the temperature of the cold side and the dew point is rechecked, starting a new cycle. If at the end of a cycle the temperature has dropped from the dew point (plus a differential, for example two degrees, to compensate for the thermal inertia), it stops

15 feed the peltier cells. Peltier cells are also stopped feeding if it is detected that the temperature of the hot side exceeds a configurable limit to avoid possible damage to them. This check is done permanently without waiting to finish a cycle. Additionally there is a thermal relay on the heatsink

20 which cools the hot side for the same protection purpose.

Claims (24)

1. Environmental water collection system, which includes:

-

 a condensing device (26) which in turn comprises:

• at least one peltier cell (1,2);

•

 heat dissipating means (4) in contact with the hot face of the at least one peltier cell (1,2);

•

 a condensation surface (6) in contact with the cold face of the at least one peltier cell (1,2);

•

 a cabin (9) for housing inside the at least one peltier cell (1,2), delimiting on both sides a cold chamber (10) and a hot chamber (11), said cabin having at least one opening for the air outlet (13.15) in both chambers (10.11) and of an adjustable opening

(14) for the entry of air into the cold chamber (10);

•

 relative humidity (17) and air temperature (16) sensing means inside the cold room (10) of the passenger compartment (9);

•

 temperature sensing means (7) of the condensation surface (6);

•

 means for collecting condensed water on the condensation surface (6); Y

-

 control means (25) configured to: • obtain the measurements of the different sensor means (7,16,17); • obtain the dew temperature Tr of the air contained in the cold chamber

(10) from the measurements of the relative humidity (17) and temperature (16) sensing means of the air inside the cold chamber (10); • carry out a control of the at least one peltier cell (1,2) depending on the difference between the dew temperature Tr and the temperature of the condensing surface (6); characterized in that the water collection means comprise actuator means acting on the condensation surface (6); and because said actuator means comprise a vibrating mechanism (20) responsible for generating vibrations of the condensation surface (6).

2.

 System according to claim 1, characterized in that the condensing device (26) comprises a flexible frame (8) that incorporates the condensing surface (6) and is in contact with the vibrating mechanism (20).

3.

 System according to any of the preceding claims, characterized in that the condensing device (26) additionally comprises temperature sensing means (5) of the heat dissipating means (4), whose information is received by the control means (25).

Four.

 System according to claim 3, characterized in that the control means (25) are configured to deactivate at least one peltier cell (1,2) when the temperature of the heat dissipating means (4) exceeds a certain limit.

5.

 System according to any of the preceding claims, characterized in that the condensing device (26) additionally comprises cooling means (12) of the hot chamber (11), the control means (25) being in charge of carrying out a control of the activation of said cooling means (12).

6.

 System according to any of the preceding claims, characterized in that the control means (25) are configured to determine the difference between the dew temperature Tr and the temperature of the condensation surface (6) and, when said difference is less than one determined threshold, activate at least one peltier cell (1,2).

7.

 System according to the preceding claim, characterized in that the control means (25) are configured to activate at least one peltier cell (1,2) for a time proportional to the difference between the dew temperature Tr and the temperature of the condensation surface (6).

8.

 System according to any of the preceding claims, characterized in that the condensing device (26) comprises a support (3) of low thermal conductivity in which at least one peltier cell (1,2) is fitted.

9.

 System according to any of the preceding claims, characterized in that the water collection means comprise a duct (18) located under the condensation surface and a collection tank (19).

10.

 System according to any of the preceding claims, characterized in that it additionally comprises a solar panel (22), a charge and consumption regulator (23) and a battery (24) for powering the system.

eleven.

 System according to any of the preceding claims, characterized in that the condensation surface (6) has anti-fogging properties to improve water collection.

12. Environmental water collection system, comprising:

-

 a condensing device (26) which in turn comprises:

• at least one peltier cell (1,2);

•

 heat dissipating means (4) in contact with the hot face of the at least one peltier cell (1,2);

•

 a condensation surface (6) in contact with the cold face of the at least one peltier cell (1,2);

•

 a cabin (9) for housing inside the at least one peltier cell (1,2), delimiting on both sides a cold chamber (10) and a hot chamber (11), said cabin having at least one opening for the air outlet (13.15) in both chambers (10.11) and of an adjustable opening

(14) for the entry of air into the cold chamber (10);

•

 relative humidity (17) and air temperature (16) sensing means inside the cold room (10) of the passenger compartment (9);

•

 temperature sensing means (7) of the condensation surface (6);

•

 means for collecting condensed water on the condensation surface (6); Y

-

 control means (25) configured to: • obtain the measurements of the different sensor means (7,16,17); • obtain the dew temperature Tr of the air contained in the cold chamber

(10) from the measurements of the relative humidity (17) and temperature (16) sensing means of the air inside the cold chamber (10); • carry out a control of the at least one peltier cell (1,2) depending on the difference between the dew temperature Tr and the temperature of the condensing surface (6); characterized in that the water collection means comprise actuator means acting on the condensation surface (6); and because said actuator means comprise a sweeping mechanism (21) responsible for sweeping the condensation surface (6) to push the condensed water thereon.

13.

 System according to claim 12, characterized in that the condensing device (26) additionally comprises temperature sensing means (5) of the heat dissipating means (4), whose information is received by the control means (25).

14.

 System according to claim 13, characterized in that the control means (25) are configured to deactivate at least one peltier cell (1,2) when the temperature of the heat dissipating means (4) exceeds a certain limit.

fifteen.

 System according to any of claims 12 to 14, characterized in that the condensing device (26) additionally comprises cooling means (12) of the hot chamber (11), the control means (25) being in charge of carrying out a control of the activation of said cooling means (12).

16.

 System according to any of claims 12 to 15, characterized in that the control means (25) are configured to determine the difference between the dew temperature Tr and the temperature of the condensation surface (6) and, when said difference is smaller at a certain threshold, activate at least one peltier cell (1,2).

17.

 System according to the preceding claim, characterized in that the control means (25) are configured to activate at least one peltier cell (1,2) for a time proportional to the difference between the dew temperature Tr and the temperature of the condensation surface (6).

18.

 System according to any of claims 12 to 17, characterized in that the condensing device (26) comprises a support (3) of low thermal conductivity in which at least one peltier cell (1,2) is fitted.

19.

 System according to any of claims 12 to 18, characterized in that the water collection means comprise a conduit (18) located under the condensation surface and a collection tank (19).

twenty.

 System according to any of claims 12 to 19, characterized in that it additionally comprises a solar panel (22), a charge and consumption regulator (23) and a battery (24) for powering the system.

twenty-one.

 System according to any of claims 12 to 20, characterized in that the condensation surface (6) has anti-fogging properties to improve water collection.

22

 Condensing device for collecting water from the environment, characterized in that said condensing device (26) comprises:

-

at least one peltier cell (1,2);

-

 heat dissipating means (4) in contact with the hot face of the at least one peltier cell (1,2);

-

 a condensation surface (6) in contact with the cold face of the at least one peltier cell (1,2);

-

 a cabin (9) for housing inside the at least one peltier cell (1,2), delimiting on both sides a cold chamber (10) and a hot chamber (11), said cabin having at least one opening for the air outlet (13.15) in both chambers (10.11) and of an adjustable opening (14) for the entry of air into the cold chamber (10);

-

 relative humidity (17) and air temperature (16) sensing means inside the cold room (10) of the passenger compartment (9);

-

 temperature sensing means (7) of the condensation surface (6); Y

-

means for collecting condensed water on the condensation surface (6); characterized in that the water collection means comprise actuator means acting on the condensation surface (6); and because said actuator means comprise a vibrating mechanism (20) responsible for generating vibrations of the condensation surface (6).

23. Condensing device for collecting water from the environment, characterized in that said condensing device (26) comprises:

-

at least one peltier cell (1,2);

-

 heat dissipating means (4) in contact with the hot face of the at least one peltier cell (1,2);

-

 a condensation surface (6) in contact with the cold face of the at least one peltier cell (1,2);

-

 a cabin (9) for housing inside the at least one peltier cell (1,2), delimiting on both sides a cold chamber (10) and a hot chamber (11), said cabin having at least one opening for the air outlet (13.15) in both chambers (10.11) and of an adjustable opening (14) for the entry of air into the cold chamber (10);

-

 relative humidity (17) and air temperature (16) sensing means inside the cold room (10) of the passenger compartment (9);

-

 temperature sensing means (7) of the condensation surface (6); Y

-

means for collecting condensed water on the condensation surface (6); characterized in that the water collection means comprise actuator means acting on the condensation surface (6); and because said actuator means comprise a sweeping mechanism (21) responsible for sweeping the condensation surface (6) to push the condensed water thereon.

SPANISH OFFICE OF THE PATENTS AND BRAND Application number: 201131033 SPAIN Date of submission of the application: 06.20.2011 Priority Date: REPORT ON THE STATE OF THE TECHNIQUE 51 Int. Cl.: See Additional Sheet RELEVANT DOCUMENTS

Category

Documents cited Claims Affected

X

US 7337615 B2 (REIDY JAMES J) 04.03.2008, 1-9,13,15

column 2, line 57 - column 4, line 57; Figures 2-3.

TO

10-12,14

X

US 2007261413 A1 (HATAMIAN MEHDI et al.) 15.11.2007, 1,9.15

figure 2; paragraphs [0034-0036].

X

EN 2257162 A1 (UNIV CATALUNYA POLITECNICA) 16.07.2006, 1.15

column 3, line 25 - column 4, line 37; Figure 1

X

ES 2322736 A1 (ESTEVE SANCHEZ VICENTE MANUEL) 06.25.2009, 1.13.15

page 3, lines 1-62; Figure 1.

TO

DE 3936977 A1 (TROUSSAS MANUELA) 08.05.1991, 1.13.15

Figure 1.

Category of the documents cited X: of particular relevance Y: of particular relevance combined with other / s of the same category A: reflects the state of the art O: refers to unwritten disclosure P: published between the priority date and the date of priority submission of the application E: previous document, but published after the date of submission of the application

This report has been prepared • for all claims • for claims no:

Date of realization of the report 20.10.2011

Examiner F. Jara Solera Page 1/4

REPORT OF THE STATE OF THE TECHNIQUE Application number: 201131033 CLASSIFICATION OBJECT OF THE APPLICATION F25B21 / 02 (2006.01) E03B3 / 28 (2006.01) A01G25 / 00 (2006.01) Minimum documentation sought (classification system followed by classification symbols) F25B, E03B, A01G Electronic databases consulted during the search (name of the database and, if possible, terms of search used) INVENTIONS, EPODOC State of the Art Report Page 2/4  WRITTEN OPINION Application number: 201131033 Date of Written Opinion: 20.10.2011 Statement

Novelty (Art. 6.1 LP 11/1986)

Claims Claims 1-15 IF NOT

Inventive activity (Art. 8.1 LP11 / 1986)

Claims Claims 10-12, 14 1-9, 13, 15 IF NOT

The application is considered to comply with the industrial application requirement. This requirement was evaluated during the formal and technical examination phase of the application (Article 31.2 Law 11/1986).  Opinion Base.- This opinion has been made on the basis of the patent application as published. State of the Art Report Page 3/4  WRITTEN OPINION Application number: 201131033 1. Documents considered.- The documents belonging to the state of the art taken into consideration for the realization of this opinion are listed below.

Document

Publication or Identification Number publication date

D01

US 7337615 B2 (REIDY JAMES J) 04.03.2008

D02

US 2007261413 A1 (HATAMIAN MEHDI et al.) 11.15.2007

D03

ES 2257162 A1 (UNIV CATALUNYA POLITECNICA) 07/16/2006

D04

ES 2322736 A1 (ESTEVE SANCHEZ VICENTE MANUEL) 06.25.2009

D05

DE 3936977 A1 (TROUSSAS MANUELA) 08.05.1991

2. Statement motivated according to articles 29.6 and 29.7 of the Regulations for the execution of Law 11/1986, of March 20, on Patents on novelty and inventive activity; quotes and explanations in support of this statement The invention consists of a water collection system condensing it by means of a peltier cell and a water collection device. In claim 1 the main features are collected, and in the 2 to 14 several particular embodiments; in claim 15 a device is included that operates according to this system. In document D01 you can see an environmental water collection system comprising (the references are those of D01) a peltier cell (7) heat dissipating means (6), a condensing surface (5) a passenger compartment ( 28) inside which is the peltier cell, a cold chamber and a hot chamber, with openings for the inlet (1) and the air outlet (3), relative humidity (12, 57) and temperature (55) , 56), collection means (8, 9, 11, 16) of the condensed water; and control means (42, 43, 44, 47, 48) to control the system. In D01 the regulation of the air inlet is not achieved by an adjustable opening but by the regulation of fans (12, 4, 44); using some means or others should be considered a design option and therefore claim 1 lacks inventive activity. Also documents D02, D03 and D04 have the same essential characteristics, the differences with the claimed invention being options or improvements obvious to a person skilled in the art. With regard to claim 2, numerous temperature sensors are provided in document D01 that provide information to the control unit (42, 43). Faced with the problem of deactivating the peltier cell when the temperature of the heat dissipating means exceeds a certain limit it is obvious to add one more temperature sensor in the invention described in D01, in the heat sink (6), attached to the unit of control, which would deactivate the peltier cell. Therefore claims 2 and 3 have no inventive activity. In D01, cooling means (4) of the hot chamber (6) can be seen, the control means (42, 43) being in charge of controlling the activation of said cooling means (12). In D01 the control means (42, 43) also activate or deactivate, depending on the dew temperatures and that of the cold zone among other variables, the peltier cell. Then claims 4, 5 and 6 have no inventive activity. In D01, and also in D02 it can be seen that the peltier cell is composed of several individual cells (30) embedded in a partition with low thermal conductivity. There are also ducts (8, 9) and water collection tanks (11, 16). And to a person skilled in the art, before the problem of accelerating the collection of water in the systems described in D01 or D02, it would occur immediately to use some actuator means. Accordingly, claims 7, 8 and 9 have no inventive activity. None of the documents cited shows a vibrating mechanism connected to a flexible frame of the condensation surface. Nor does it seem obvious that an expert in the field, in view of these documents or others nearby, can reach this solution for the problem of accelerating water collection. Therefore claims 10 and 11 are new and have inventive activity. Nor does it appear in any of the documents, nor is it apparent from a document alone or in combination with others, a sweeping mechanism on the condensation surface to push the condensed water. Then the claim, 12 is new and has inventive activity. The same applies to the feature that the condensation surface has anti-fogging properties to improve water collection, so that claim 14 is also new and has inventive activity. In document D01 it is indicated that the power of the system can be by, among others, a direct current source (a battery) or by solar panels. The solar cell feeding in D04 and D05 is also mentioned. Then claim 13 has no inventive activity. In document D01 you can see an environmental water collection device comprising (the references are those of D01) a peltier cell (7) heat dissipating means (6), a condensing surface (5) a passenger compartment ( 28) inside which is the peltier cell, a cold chamber and a hot chamber, with openings for the inlet (1) and the air outlet (3), relative humidity (12, 57) and temperature (55) , 56), collection means (8, 9, 11, 16) of the condensed water; and control means (42, 43, 44, 47, 48) to control the system. In D01 the regulation of the air inlet is not achieved by an adjustable opening but by the regulation of fans (12, 4, 44); using some means or others should be considered a design option and therefore claim 15 lacks inventive activity. Conclusions: In view of the state of the art, claims 1 to 9, 13 and 15 lack inventive activity within the meaning of article 8 of Law 11/1986 of March 20, on invention patents and utility models. With respect to claims 10 to 12 and 14, the cited documents only show the general state of the art, and are not considered of particular relevance. Therefore, it is considered that the invention according to these claims satisfies the requirements of novelty and inventive activity within the meaning of Articles 6 and 8 of Patent Law 11/1986. State of the Art Report Page 4/4