FR3065470A1 - MODULE FOR HEAT RECOVERY - Google Patents

Abstract

Set of parts for a heat recovery (1) wastewater comprising: - a module (2) comprising a first cylindrical sleeve (21) communicating with a second cylindrical sleeve (22) via a channel, said wastewater circulation channel (23), and a first passage (24) from the inside of said channel (23) towards the outside of said module (2), - a sealing part (3) comprising an outer face (32), an inner face (31), a second passage (33), intended to be positioned vis-à-vis said first passage (24), passing from said inner face (31) to said outer face (32) and at least one foot of support (35) projecting from said module (2) when said first passage (24) is vis-à-vis said second passage (33).

Description

(57) Set of parts for a heat recovery unit (1) for waste water comprising:

- A module (2) comprising a first cylindrical sleeve (21) communicating with a second cylindrical sleeve (22) via a channel, called the wastewater circulation channel (23), and a first passage (24) from the interior of said channel (23) to the outside of said module (2),

- A sealing part (3) comprising an external face (32), an internal face (31), a second passage (33), intended to be positioned opposite said first passage (24), passing through said internal face (31) to said external face (32) and at least one support foot (35) projecting relative to said module (2) when said first passage (24) is opposite said second passage (33).

Technical area

The present invention belongs to the technical field of heat recovery units and more particularly to the field of heat recovery units for waste water. The present invention relates in particular to a module for manufacturing a heat recovery unit for wastewater and the heat recovery unit comprising said module.

Prior art

Wastewater is an important source of calories which are mostly lost to the environment. In fact, the water from washing clothes, dishes or people has a temperature between 30 ° C and 90 ° C. However, these gray waters are directed to the sewers without prior treatment.

The recovery of calories from wastewater is sometimes carried out by collective or individual systems. Thus, we know the use of heat pumps placed in sewers or in wastewater treatment centers. However, these devices are strongly downstream of the wastewater production zone where a high proportion of the initial calories is no longer present.

Individual systems are also known, placed directly at the exit of a dwelling or at the level of the evacuation of the device which produced the waste water. We can cite for example, heat recuperators arranged directly downstream of the siphons of showers or baths. The latter devices are directly coupled with the arrival of clean sanitary cold water and provide additional calories to the water that will be used for the shower.

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Individual systems have the important advantage of recovering and transferring calories as close as possible, in terms of time and space, to the area of production and use of these calories. The performance of these systems is therefore optimal.

However, individual systems have a number of constraints related to their installation and production. Most of the systems of the prior art include at least one enclosure intended for which one is often molded, which implies, in addition to production costs, logistical constraints.

contain exchanger

By sewage

This enclosure elsewhere, the individual systems must be able to fit into reduced volumes near the siphon of the bathtub or shower. This problem is all the more important when the installation is done on already existing structures of difficult access. The plumber must be able to ensure the perfect seal of the installation, the flow of wastewater while working in a reduced volume.

The present invention provides a device making it possible to respond to the problems posed by the systems of the prior art, by providing a heat recovery unit for wastewater comprising a small number of parts, of reduced volume and easily installable on already existing sanitary facilities.

Summary of the invention

Thus, the present invention relates to a set of parts for a waste water heat recovery unit comprising:

a module comprising a first cylindrical sleeve communicating with a second cylindrical sleeve via a

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- 3 channel, said wastewater circulation channel, and a first passage from the interior of said channel to the exterior of said module,

- A sealing piece comprising an external face, an internal face, a second passage, intended to be positioned opposite said first passage, crossing from said internal face to said external face, and at least one foot support projecting from said module when said first passage is opposite said second passage.

The set of parts according to the invention will make it possible to build a heat exchanger by using elements, such as PVC tubes and a copper pipe, which a person skilled in the art usually has. Furthermore, the same module is used twice in the heat exchanger, which makes it possible to reduce the number of molds to be used for the production of the heat recovery unit according to the invention.

The sealing piece simultaneously ensures the sealing of the heat recovery unit, its retention on the ground, the positioning of an insulation sleeve and the level adjustment.

The set of parts according to the invention occupies a reduced volume which has an obvious advantage for its installation, shipment, storage and use.

According to a preferred embodiment of the invention, said sealing part and said module are associated at the level of said first and second passages by means of complementary associations.

According to a preferred embodiment of the invention, said sealing part and / or said module are made of plastic.

According to a preferred embodiment of the invention,

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- 4 said sealing part and / or said module are molded.

According to a preferred embodiment of the invention, said complementary association means are respectively a male association means and a female association means.

According to an even more preferred embodiment of the invention, said male association means and said female association means are arranged annularly around said second or first passage.

According to an entirely preferred embodiment of the invention, the female association means is a countersink in which the congruent male association means is inserted.

According to a preferred embodiment of the invention, said sealing part comprises a flat internal face from which extends said male association means.

According to an even more preferred embodiment of the invention, said male association means extends perpendicular to said internal face.

According to a preferred embodiment of the invention, said module consists of a single molded block.

According to a preferred embodiment of the invention, the longitudinal axis of said first and second sleeves are parallel.

According to a preferred embodiment of the invention, said sleeves have a circular section.

According to a preferred embodiment of the invention, said sleeves are open in opposite directions.

According to a preferred embodiment of the invention, said set of parts further comprises a seal between said first and second passage.

According to an even more preferred embodiment of the invention, said seal is an O-ring.

According to a preferred embodiment of the invention,

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- 5 said support foot is formed by the lateral edge of said sealing part.

According to a preferred embodiment of the invention, said sealing part is mounted in rotation, about an axis passing through said first and second passage, relative to said module.

According to a preferred embodiment of the invention, said sealing part further comprises a first receptacle extending from its external face.

According to an even more preferred embodiment of the invention, the base of said first receptacle extends around all or part of said second passage.

According to a preferred embodiment of the invention, said sealing part further comprises a second receptacle extending from its external face.

According to another preferred embodiment of the invention, said sealing part further comprises a second receptacle disposed on the surface of its external face.

According to an entirely preferred embodiment of the invention, said first receptacle and said second receptacle in the form of a straight hollow cylinder, open on a part of its lateral surface, the base of which is directly associated with the external face of said sealing part.

According to a definitively preferred embodiment of the invention, the openings of said first and second receptacles are arranged opposite.

The present invention also relates to a device comprising the various elements of the part assembly according to the invention.

The present invention also relates to a device for recovering the heat of waste water comprising a tube, one end of which is inserted

RECALL5-FR-1_TEXTE DEPOSE_SO / GE

- 6 in the second sleeve of a first module according to the invention, and the other end in the second sleeve of a second module according to the invention, said tube enclosing all or part of a hollow coil, forming a channel said clear water circulation channel, the ends of which extend outside of said modules via said first and second passages.

According to a embodiment prefer of The invention, said serpentine is metallic. According to a embodiment prefer of The invention, said tube is a tube is a PVC tube. According to a embodiment prefer of The invention, said tube to a 80 mm diameter or a diameter of 63 mm. According to a embodiment prefer of The invention,

said coil is extended at each of these ends by a straight channel.

According to an even more preferred embodiment of the invention, said rectilinear channel is integral with said coil and made of the same material.

According to a preferred embodiment of the invention, said device further comprises a temperature taking means associated with an end, external to said module, of said coil.

According to an even more preferred embodiment of the invention, said temperature taking means is arranged inside said second receptacle.

Brief description of the drawings

- Figure 1 shows a perspective view of a first embodiment of a device according to the invention.

- Figure 2 shows a perspective view of a second embodiment of a device according to the invention.

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- 7 - Figure 3 shows a longitudinal sectional view of an embodiment of a device according to the invention.

- Figure 4 shows a top view of an embodiment of a sealing part according to the invention.

Description of the embodiments

The embodiments described below represent preferred but non-limiting examples of the invention.

Thus, the present invention comprises a module 2 which will constitute the two ends of the device 1 according to the invention.

The module 2 according to the invention comprises a first cylindrical sleeve 21 intended to receive a pipe for discharging waste water (e.g. downstream of a shower). This first sleeve 21 communicates with a second cylindrical sleeve 22 intended to receive a tube 11 forming part of the enclosure of the device 1 according to the invention. The communication between the first 21 and second 22 sleeve takes place via a channel 23, called the wastewater circulation channel.

In the context of the present invention, the term "communicate" means that the two sleeves 21, 22 are connected by a hollow structure allowing, during normal operation of the heat recovery unit, the sealed circulation of a fluid from one towards the other.

Preferably, said sleeves 21, 22 define an internal volume having a circular cross section and a cylindrical internal volume defining a longitudinal axis. Each sleeve 21, 22 is open at one of its ends and its other end communicates with the wastewater channel 23. Said opening preferably occupies the whole of said

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- 8 cross section thus allowing the insertion of a congruent tube inside the sleeve 21, 22.

Preferably, in order to optimize the compactness of the module 2 and of the device 1 according to the invention, the two sleeves 21, 22 are wholly or partly superimposed so that their respective longitudinal axes are parallel and their respective opening directed in directions

opposite one from the other. The module 2 according to the invention can to be in all matter usable in the domain of plumbing. Preferably, said module 2 is in plastic (e.g.

ABS or PVC) and even more preferably PVC.

The module 2 according to the invention can be produced according to techniques well known to those skilled in the art such as machining, molding, extrusion, extrusion / blowing and printing.

According to a preferred embodiment of the invention, said module 2 consists of a single molded, extruded or printed block.

The module 2 according to the invention further comprises first passage 24 from the interior of said wastewater channel to the exterior of said module. This first passage 24 is intended to allow the insertion of the end 41 of the coil 4 in which the water to be heated circulates.

The shape and dimension of said first passage 24 are preferably chosen so as to be congruent with that of the end 41 of the coil 4. For example, if said end 41 has a circular section, said first passage 24 will have over its entire length a section having at least one circular section of the same diameter.

The first passage 24 is preferably arranged in the extension of the second sleeve 22 opposite to

RECALL5-FR-1_TEXTE DEPOSE_SO / GE the opening of said sleeve. The longitudinal axis of said first passage 24 is also preferably parallel to the longitudinal axis of said second sleeve 22.

The set of parts according to the invention also comprises a sealing part 3 comprising an external face 32 and an internal face 31. In the context of the present invention, the terms “external” and “internal” are used with reference to the position of the sealing part 3 relative to the module 2. Thus, the internal face 31 is the face intended to be opposite the module 2. The sealing part 3 further comprises a second passage 33 , intended to be positioned opposite said first passage 24, crossing from said internal face 31 to said external face 32.

The shape and dimension of said second passage 33 are preferably chosen so as to be congruent with that of the end 41 of the coil 4. For example, if said end 41 has a circular section, said second passage 33 will have a section over its entire length having at least a circular section of the same diameter.

Preferably, said internal face 31 and said external face 32 are planar and separated by a lateral edge 34.

The sealing part 3 according to the invention can be of any material usable in the field of plumbing. Preferably, the sealing part 3 is made of plastic and even more preferably of PVC.

The sealing part 3 according to the invention can be produced according to techniques well known to those skilled in the art such as machining, molding, extrusion, extrusion / blowing and printing.

The sealing piece 3 further comprises at least one support leg 35 projecting from said module

RECALL5-FR-1_TEXTE DEPOSE_SO / GE ίο when said first passage 24 is opposite said second passage 33. This or these support legs 35 will in particular allow the positioning and wedging of the device 1 according to the invention. This timing and positioning are particularly important since they condition the flow of wastewater downstream of the device.

The support leg 35 can advantageously be formed by the lateral edge 34 of the sealing piece 3. This lateral edge 34 can be straight or include one or more projections 37 intended to come to bear on the ground. The sealing part 3 according to the invention may comprise several lateral edges 34 which will be able to be used alternately as support feet 35 according to the needs of a person skilled in the art.

In order to facilitate the orientation of the sealing part 3 relative to the module 2, said sealing part 3 is mounted in rotation, about an axis passing through said first 24 and second passage 33, relative to said module 2 Thus, by rotating the sealing part 3, relative to the module 2, the person skilled in the art can choose one of the lateral edges 34 as the support foot 35 and / or orient the support foot 35 to adjust the horizontality of the entire heat recovery unit according to the invention.

In order to seal the device 1 and thus prevent waste water from spreading from the inside of the device 1 to the outside via the first 24 and second passages 33, said sealing part 3 and said module 2 are associated by means of complementary associations 36, 25.

Preferably, complementary 35, 26 of male association and said means of association are respectively means means of female association

RECALL5-FR-1_TEXTE DEPOSE_SO / GE arranged annularly around said second or first passage 33, 24. These means of association are well known to those skilled in the art who can choose from the many means available. Among the known means of association, there may be mentioned in particular the rapid latching means of the Gardena® type and the means implementing a tapping and a screw pitch.

In the embodiment presented in FIG. 3, the female association means is a countersink 26 into which is inserted the male association means 36. The male association means 36 extends 1 the internal face 31 of the part which meets perpendicularly sealing 3.

Preferably, between the room daily

The sealing association 3 and the module 2 is reinforced by means of complementary associations. Among the means that can be used, mention may be made of glue for piercing means (nails, screws). According to an even more preferred embodiment, said complementary association means is a screw. The seal between the module 2 and the seal 3 is advantageously improved by the use of a seal 37 between said first 24 and second passage 33. This seal 37 is chosen according to the respective shapes of the means association 26, 36. It can take in particular the form of a silicone film, a flat annular seal or an O-ring.

The wastewater heat recovery device according to the invention is therefore easily manufactured on site by a person skilled in the art from the set of parts described above and from the products which he uses. Thus, by inserting the end of a tube

PVC in the second sleeve 22 of a first module 2, and the other end in the second sleeve 22 of a second module 2 the enclosure of the device 1 according to

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- 12 the invention is incorporated. The tube 11 is preferably made of PVC because this type of tube is most commonly available in the technical field of the invention. However, any other type of material can be used in the context of the present invention.

This enclosure also contains a coil 4 made of copper (or any other heat transfer material), the ends 41, 42 of which extend beyond the exterior of said modules via said first and second passages 24, 33. The serpentine shape makes it possible to optimize the contact surface between the wastewater circulation channel and the clean water circulation channel '. It is also possible to use other forms

The extremities

41, 42 of the coil 4, preferably rectilinear, thus allowing easy insertion through the passages 24, 33.

Sealing parts 3 are then placed on each side of the device 1, around the ends 41, 42 of the coil 5 and associated with the modules 2 at the level of the first passages 24.

Each of the sealing parts 3 can then be oriented, by rotation, in order to adjust the support feet 35 relative to the surface where the device 1 according to the invention is installed.

In order to control the operation of the device 1 according to the invention, it may be advantageous to place in contact with one end 41, 42 of the coil 4 a means for taking the temperature 5. Thus the user can regularly observe that the temperature clean water, circulating inside the device 1 against the wastewater, is much higher than the temperature of the water upstream of the device.

The temperature taking means 5 and advantageously an electronic thermometer whose probe is their

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- 13 is directly in contact with the end 41, 42 of the coil 4.

To this end, the sealing part 3 can advantageously comprise on its external face 32, a second receptacle 38 intended to receive the temperature taking means 5 and a first receptacle 39 intended to receive the end 41, 42 of the coil 4. The two receptacles 38, 39 can in particular be arranged side by side as indicated in FIG. 2. It is also possible to consider placing the second receptacle 38 so that it receives the temperature taking means 5 perpendicular to the longitudinal axis of the end 41, 42 of the coil 4. In the latter case, the tip of the temperature taking means 5 will be able to come into contact with said coil 4.

The entire device according to the invention can advantageously be placed in an insulating sheath in order to improve its overall performance. This insulating sheath is preferably cylindrical. Furthermore, this insulating sheath is advantageously held between the two sealing parts 3.

RECALL5-FR-1_TEXTE DEPOSE_SO / GE

- 1 4 -

Claims (5)

RESELL I CAT IONS 1. Set of parts for a recuperator of heat (D wastewater including : - a module (2) including a first muff cylindrical (21) communicating with a second muff cylindrical (22) via a channel, said wastewater circulation channel (23), and a first passage (24) from the interior of said channel (23) to the exterior of said module (2), a sealing part (3) comprising an external face (32), an internal face (31), a second passage (33), intended to be positioned opposite said first passage (24), passing through said internal face (31) to said external face (32) and at least one support leg (35) projecting relative to said module (2) when said first passage (24) is opposite said second passage (33). 2. Set of parts according to claim 1 characterized in that said sealing part (3) and said module (2) are associated at the level of said first (24) and second (33) passages by means of complementary associations ( 36, 25). 3. Set of parts according to claim 2 characterized in that said complementary association means (36, 25) are respectively a male association means (36) and a female association means (25). 4. Set of parts according to claim 3 characterized in that said male association means (36) and said female association means (25) are arranged annularly around said second (33) or first passage RECALL5-FR-1_TEXTE DEPOSE_SO / GE (24). - 15 - 5. Set of parts according to 1 'a of claims 1 to 4 characterized in what 1 axis longitudinal of said first (21) and second (22) sleeves are parallel. 6. Set of parts according to 1 'a of Claims 1 to 5 characterized in that said sleeves (21, 22) are open in opposite directions. 7. Set of parts according to one of claims 1 to 6 characterized in that said support foot (35) is formed by the lateral edge (34) of said sealing part (3). 8. Set of parts according to one of claims 1 to 7 characterized in that said sealing part (3) is rotatably mounted, about an axis passing through said first (24) and second passage (33), with respect to said module (2). 9. Device (1) for recovering heat from waste water comprising a tube (11), one end of which is inserted into the second sleeve (22) of a first module (2) according to one of claims 1 at 8, and the other end in the second sleeve (22) of a second module (2) according to one of claims 1 to 8, said tube enclosing all or part of a hollow coil (4), forming a channel called clear water circulation channel, the ends (41, 42) of which extend outside of said modules (2) via said first and second passage (24, 33). RECALL5-FR-1_TEXTE DEPOSE_SO / GE -Ιδιο. Device (1) for recovering heat from waste water according to claim 9 characterized in that it further comprises a temperature taking means (5) associated with one end (41, 42), external to said 5 module (2), of said coil (4). RECALL5-FR-1_TEXTE DEPOSE_SO / GE