EP2761232A1 - Système d'échange thermique pour conditionner l'air intérieur d'un espace - Google Patents
Système d'échange thermique pour conditionner l'air intérieur d'un espaceInfo
- Publication number
- EP2761232A1 EP2761232A1 EP12775765.6A EP12775765A EP2761232A1 EP 2761232 A1 EP2761232 A1 EP 2761232A1 EP 12775765 A EP12775765 A EP 12775765A EP 2761232 A1 EP2761232 A1 EP 2761232A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- enclosure
- exchange system
- heat exchange
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004378 air conditioning Methods 0.000 title 1
- 239000002826 coolant Substances 0.000 claims description 11
- 238000007664 blowing Methods 0.000 claims description 5
- 230000003750 conditioning effect Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 2
- 230000000284 resting effect Effects 0.000 claims 1
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 239000013529 heat transfer fluid Substances 0.000 description 6
- 238000005192 partition Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
- F24F1/022—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing comprising a compressor cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/082—Grilles, registers or guards
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
Definitions
- Heat exchange system for conditioning the interior air of a space
- the invention relates to a heat exchange system for conditioning the interior air of a space.
- the invention relates, in particular, to a heat exchange system which allows, in a heat pump mode, to take heat from an external environment situated outside the space to transfer it to the interior air located inside the space, and thus heat the space, or, in an air conditioner mode, to take heat from the indoor air to transfer it to the outside environment, and thus to cool the space.
- a heat exchange system uses two heat exchangers in which circulates a coolant and alternately forming an evaporator, adapted to collect heat, and a condenser, adapted to transfer the heat.
- the invention finds application in the context of the renovation of heating system, for example electric Joule effect.
- the heat exchange system may then comprise an enclosure having a base near which one of the heat exchangers is disposed.
- the heat exchanger can then advantageously be arranged obliquely facing an air inlet opening formed in the base and partially closed by a grid.
- the known heat exchange system does not provide optimum efficiency.
- the heat exchange system poses problems of pressure drop at the air inlet.
- the heat exchange system does not provide a satisfactory evacuation of the condensates which, in air conditioner mode, form on the evaporator heat exchanger and can reach up to 0.5 to 0.8 l / h per cold kW.
- the invention aims to overcome the problems mentioned above.
- the invention proposes a heat exchange system for conditioning the interior air of a space, said heat exchange system comprising:
- an enclosure comprising a base intended to be placed opposite a floor of the space, and opposed front and rear faces extending in a vertical direction from the base, the enclosure having an inlet opening of air provided on at least a portion of the base, and an air outlet opening,
- First and second heat exchangers forming one a condenser and the other an evaporator, the first heat exchanger being placed in the chamber and having a lower surface located near the base and facing the opening air inlet, said first heat exchanger being disposed obliquely in the enclosure so as to present the lower surface towards the front face of the enclosure,
- a heat transfer fluid circuit adapted to circulate a coolant in said first and second heat exchangers
- the grid comprises a plurality of fins parallel to each other, each fin having opposed upper and lower surfaces respectively directed toward the first heat exchanger and outwardly, the grid extending obliquely so as to presenting a portion of the lower surface of the fins towards the front face of the enclosure, the upper surfaces of the fins being shaped to collect condensates that form on the first heat exchanger, and the lower surfaces of the fins being shaped to allow a internal air passage through the air inlet opening.
- the base and the grid which have a slope towards the front face of the enclosure make it possible to increase the passage section of the interior air, thus significantly reducing the pressure losses at the air inlet.
- the inclination of the grid makes it possible to increase the section of passage between the fins and thus to limit the one-off pressure losses.
- the inclination of the base and the grid makes it possible to work the first heat exchanger more homogeneously and more efficiently by better distributing the internal air flows that pass through it.
- the conformation of the fins makes it possible to increase the collection area of the condensates, to uniformize it at all points of the first heat exchanger and thus to improve the evacuation of the condensates.
- the interior air flow can enter being oriented orthogonally with respect to the first heat exchanger, so as to optimize the thermal efficiency of the heat exchange system.
- the provisions concerning the base and the grid also improve the compactness of the heat exchange system.
- the base and the first heat exchanger can extend generally parallel to each other, the grid extending generally parallel to the first heat exchanger.
- the base and the grid can thus have an inclination identical (within plus or minus 20 °) to that of the first heat exchanger.
- each fin may have a concavity facing the first heat exchanger and the lower surface of each fin may have an outwardly facing convexity.
- the fins may be shaped so that a projection of the upper surfaces on a projection plane perpendicular to the vertical direction completely covers a projection of the air inlet opening on the projection plane.
- Each fin may extend in a longitudinal direction perpendicular to the vertical direction, the fins being spaced from each other in a transverse direction perpendicular to the longitudinal and vertical directions, and spaced from each other in the vertical direction.
- Each fin may then have a generally V-shaped cross section and have front and rear walls respectively on the front and rear sides of the enclosure, the front wall being substantially vertical and the rear wall being oblique.
- the grid may comprise at least one gutter connecting the fins to each other, each fin converging towards the gutter.
- each fin may extend between two opposite ends, the gutter connecting the fins to each other between the ends of said fins.
- the heat exchange system may further include an air circuit adapted to circulate the interior air between the air inlet opening and the air outlet opening therethrough.
- the first heat exchanger having front and rear edges respectively of the side of the front and rear faces of the enclosure, said air circuit comprising at least one fan placed opposite the first heat exchanger, opposite the base, the fan extending in a spacing, measured perpendicularly to the vertical direction, between the front and rear edges of the first heat exchanger, and having a blowing opening positioned substantially opposite the front edge of the first heat exchanger.
- the enclosure may be adapted to allow installation in the space such that the base is placed close to the ground, the enclosure comprising, in particular, a rear wall on the rear face provided with 'Hanging elements to a wall of space or feet to rest on the floor of the space.
- the heat exchange system may be one-piece and include an indoor unit including the enclosure, the first and second heat exchangers and the coolant circuit, the first and second heat exchangers and the heat exchanger circuit. heat transfer fluid being placed in the enclosure.
- FIG. 1 is a perspective representation of a heat exchange system according to one embodiment of the invention, the heat exchange system comprising two heat exchangers and a heat transfer fluid circuit arranged in an enclosure, front panels have been omitted to view the interior, one of the heat exchangers being placed obliquely near a base of the enclosure, the base extending obliquely parallel to the heat exchanger,
- FIG. 2 is a perspective view of a lower surface of a gate placed in an air inlet opening formed on the base of the enclosure of the heat exchange system of FIG. 1;
- FIG. 3 is a perspective representation of an upper surface of the grid of FIG. 2,
- FIG. 4 is a plan representation of a front face of the grid of FIG.
- FIG. 5 is a plan view of a side face of a portion of the heat exchange system of FIG. 1, illustrating the oblique heat exchanger, the grid and a fan for circulating indoor air. between the air inlet opening and an air outlet opening through the heat exchanger.
- the same references designate identical or similar elements.
- Figure 1 shows a heat exchange system 1 for conditioning the interior air of a space 2, such as a room of a house, a room or other technical.
- the space comprises in particular a floor S and a wall M which extends from the floor S.
- the heat exchange system 1 allows either to heat the space 2 by taking heat from an external environment located outside of space 2, such as outside air or water, (cold source) and transferring the heat taken to the indoor air (hot source), or to cool the space 2 by taking from it heat (cold source) and transferring to the outside environment (hot source) the heat taken.
- the heat exchange system 1 is of monobloc type and comprises an indoor unit placed inside the space 2.
- the indoor unit then includes an enclosure 5, first 25 and second 35 heat exchangers and a coolant circuit.
- the invention also applies to any other heat exchange system.
- the invention applies in particular to a split-type heat exchange system comprising an indoor unit comprising one of the heat exchangers and an outdoor unit comprising the other heat exchanger.
- the enclosure 5 comprises a lower compartment 10 and an upper compartment
- the lower compartment 10 respectively comprises a rear wall January 1 and a front wall, not shown for reasons of clarity.
- the rear wall 1 1 defines a vertical plane XZ which comprises the vertical direction Z and a longitudinal direction X perpendicular to the vertical direction Z.
- the lower compartment 10 also comprises two side walls 12 extending opposite one another between the rear walls 1 1 and front, in a transverse direction Y perpendicular to the vertical plane XY.
- the rear wall 1 rectangular, has a vertical dimension greater than that of the front wall.
- the trapezoidal side walls 12 have parallel rear edges 13 and 14, connected respectively to the rear walls 1 1 and front.
- the rear edges 13 and 14 before have vertical dimensions that correspond to those of the rear walls 1 1 and before which they are connected.
- the front, rear 1 1 and side walls 12 have upper edges 15 which extend in a horizontal plane XY comprising the longitudinal directions X and transverse Y, and which receive an upper partition 16, horizontal.
- lower edges 17 of the front, rear 1 1 and side walls 12 define a base 20 of the enclosure 5.
- the lower edges 17 of the side walls 12 are inclined between their rear edges 13 and before 14.
- the base 20 therefore extends obliquely, that is to say, being inclined with respect to XY horizontal plane and relative to the vertical plane XZ, so as to approach the upper partition 16 from the lower edge 17 of the rear wall 1 1 to the lower edge of the front wall.
- the base 20 is then provided with an air inlet opening delimited by the lower edges 17 of the front, rear and lateral walls 1 1 12.
- the base 20 has an inclination so as to present the inlet opening.
- the inclination of the base 20 may be between 30 ° and 60 °, and preferably between 40 ° and 50 °.
- a grid 50 which will be described in more detail in the following description in connection with Figures 2 to 5 is secured to the base 20 to partially block the air inlet opening and protect the heat exchange system 1 of the intrusion of external elements in the lower compartment 10.
- the first heat exchanger 25 is placed close to the base 20 with a lower surface 26 facing the air inlet opening.
- the first heat exchanger 25 is disposed obliquely, that is to say by being inclined relative to the horizontal plane XY and relative to the vertical plane XZ, in the lower compartment 10 so as to approach the upper partition 16 from a rear edge 27 located near the rear wall 1 1 to a front edge 28 located near the front wall.
- the first heat exchanger 25 is then inclined so as to have its lower surface 26 towards the front face 5b of the enclosure 5.
- the first heat exchanger 25 and the base 20 extend parallel to each other. one with respect to the other.
- the first heat exchanger 25 and the air inlet opening have similar dimensions, the first heat exchanger 25 having edges substantially in correspondence with the edges of the air inlet opening.
- the first heat exchanger 25 selectively forms an evaporator or a condenser and makes it possible to exchange heat with the air inside the space 2.
- the heat exchange system 1 then also comprises an air circuit adapted to make circulating the interior air through the first heat exchanger 25 between the air inlet opening and an air outlet opening, for example made on the front wall.
- the air circuit comprises one or more fans 22 (two in FIG. 1) placed facing the first heat exchanger 25, opposite the base 20.
- the fans 22 extend in a spacing, measured perpendicular to the vertical plane XZ, between 27 and 28 front edges of the first heat exchanger 25, and each have a blowing opening 23 placed substantially opposite the front edge 28 of the first heat exchanger 25 and in correspondence with the air outlet opening.
- the upper compartment 30, generally parallelepipedal, rests on the upper partition 16 of the lower compartment 10.
- the upper compartment 30 respectively comprises a rear wall 31 in a vertical plane XZ preferably coplanar with that of the rear wall 1 1 of the lower compartment 10, and a front wall, not shown for reasons of clarity.
- the upper compartment 30 also comprises two side walls 32 extending between the rear walls 31 and before, facing one another, and upper walls 33 and lower 34 generally horizontal, facing one of the 'other.
- the second heat exchanger 35 is placed in the upper compartment 30.
- the second heat exchanger 35 selectively forms an evaporator or a condenser and makes it possible to exchange heat with the external medium.
- a circuit, not shown, is associated with the second heat exchanger 35 to allow the circulation of the external medium in the vicinity of the second heat exchanger 35.
- a fan 36 is also provided in the upper compartment 30 to be able to circulate the interior air in the vicinity of the second heat exchanger 35.
- the enclosure 5 also encloses a heat transfer fluid circuit connected to the first 25 and second 35 heat exchangers and adapted to circulate a heat transfer fluid, such as a fluid refrigerant, between the first heat exchanger 25 and the second heat exchanger 35.
- the heat transfer fluid circuit comprises in particular a compression unit, an expansion unit and a distribution circuit for circulating the coolant from the unit of heat. compression to the first heat exchanger 25 or from the compression unit to the second heat exchanger 35 to ensure the reversibility, or invertibility, of the heat exchange system 1.
- the enclosure 5 is installed in the space 2 in such a way that the base 20 is placed facing and close to the ground S, the rear face 5a being turned towards the wall M and the front face 5b being turned towards the interior of the space 2.
- the enclosure 5 is installed in such a way that the blowing openings 23 of the fans 22 of the lower compartment 10 and the corresponding air outlet opening are placed at a height H with respect to the ground S less than 50 cm, for example of the order of 30 cm. Because of their inclination, the base 20 and the first heat exchanger 25 deviate from the ground S from their rear edges to their front edges and are directed towards the interior of the space 2.
- the enclosure 5 comprises wall hooking elements M on at least one of the rear walls January 1, 31 of the lower compartments 10 and upper 30.
- the enclosure 5 could include feet to rest on the floor S of the space 2.
- the heat exchange system 1 when there is a need for cooling of the space 2, the heat exchange system 1 is in air conditioner mode.
- the coolant circulates in a closed loop:
- the first heat exchanger 25 forms the evaporator which takes heat from the indoor air and the second heat exchanger 35 forms the condenser transferring the heat to the outside environment.
- the heat exchange system 1 When there is a need for space heating 2, the heat exchange system 1 is in heat pump mode.
- the coolant circulates in a closed loop:
- the second heat exchanger 35 forms the evaporator collecting heat from the outside environment and the first heat exchanger 25 forms the condenser transferring the heat to the indoor air.
- the gate 50 extending into the air inlet opening is now described in connection with FIGS. 2 to 5.
- the gate 50 comprises two parallel sections 51 spaced from each other in the longitudinal direction X and a plurality of fins 52 extending parallel to each other. Each fin 52 extends in the longitudinal direction X between two ends respectively fixed to the profiles 51.
- the fins 52 have a cross section and a geometry adapted to minimize the impact on the aeraulic input of the first heat exchanger 25 (reduction of losses and therefore of the work of the fan), to protect the first heat exchanger 25 any type of intrusion and to recover the condensates that form on the first heat exchanger 25 when the heat exchange system 1 operates in air conditioner mode.
- the shape and slope of the fins 52 are optimized to treat the volume of indoor air to pass on the first heat exchanger 25, on the one hand, and to treat the volume of condensate to be discharged, on the other.
- each fin 52 is generally V-shaped defining a concavity on an upper surface 53, visible in Figures 3 and 5, and a convexity on a lower surface 54, visible in Figures 2 and 5.
- Each fin 52 comprises, in particular, a front wall 55 on the side of a front edge of the gate 50 and a rear wall 56 on the side of a rear edge of the gate 50.
- the front wall 55 is substantially vertical and the rear wall 56 is inclined, for example at an angle less than 45 °, relative to the horizontal plane XY and the vertical plane XZ.
- each fin 52 has, in addition, in the vertical plane XZ, a V shape with two parts extending on either side of a bend 57 with a slope, for example less than 10%, especially less than 5%, preferably between 2 and 4%.
- the fins 52 are fixed to the profiles 51 so as to be spaced from each other in the transverse direction Y and spaced from each other in the vertical direction Z.
- the fins 52 are arranged to deviate from the reference plane P from the rear edge of the grid 50 to the front edge.
- the grid 50 further comprises a channel 60 connecting the fins 52 to each other to ensure continuity of flow of the condensates between the fins 52 to the fin 52 closest to the rear edge of the grid 50, positioned at the lowest before evacuating them by any appropriate means.
- the channel 60 is central and connects the fins 52 between their ends, at their elbows 57, so that each fin 52 converges to the gutter 60.
- the gutter 60 is composed of a plurality of gutter portions 61 each extending between an opening 62 on the rear wall 56 (oblique) of one of the fins 52 and a notch 63 on the front wall 55 (vertical) of the following fin 52; , located lower.
- one or more differently arranged gutters could be provided.
- the gate 50 is mounted in the air inlet opening of the base 20 of the enclosure 5 with its front edge on the side of the front face 5b of the enclosure 5 and its edge rear of the side of the rear face 5a of the enclosure 5.
- the grid 50 inclined relative to the horizontal plane XY and the vertical plane XZ away from the ground S from its rear edge to its front edge, then extends obliquely, parallel to the first heat exchanger 25, so as to present the lower surface 54 of the front walls 55 of the fins 52 to the front face 5b of the enclosure 5 ( Figures 1 and 4).
- the concavity of the upper surfaces 53 of the fins 52 is turned towards the first heat exchanger 25 and the convexity of the lower surfaces 54 of the fins 52 is turned outwards, and in particular the soil S.
- Each of the fins 52 has a length corresponding to a longitudinal dimension of the first heat exchanger 25. Moreover, as shown in FIG. 5, the fins 52 are shaped so that a projection of the upper surfaces 53 on a horizontal projection plane covers in all a projection of the air inlet opening on the projection plane. In particular, one end of the rear wall 56 of one of the fins 52 is located in line with one end of the front wall 55 of the fin 52 following.
- the air inlet opening extends over the entire base 20 so that the entire base 20 has been described as oblique.
- the air inlet opening could extend only on a base portion, only this portion of the base being oblique.
- the invention has been described in relation to a base 20 and a grid 50 extending rectilinearly between front and rear edges, parallel to the first heat exchanger 25.
- the base 20 and / or the grid 50 could however extend generally parallel to the first heat exchanger 25 having a slight inclination, plus or minus 20 °, with respect to the first heat exchanger 25.
- the base 20 and / or the grid 50 could have a curvature between their leading and trailing edges and extending generally parallel to the first heat exchanger 25 to the extent that a plane joining the front and rear base edges 20 and / or the grid 50 is parallel to the first heat exchanger 25; or minus 20 °.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1158715A FR2980560B1 (fr) | 2011-09-28 | 2011-09-28 | Systeme d'echange thermique pour conditionner l'air interieur d'un espace |
| PCT/FR2012/052129 WO2013045801A1 (fr) | 2011-09-28 | 2012-09-25 | Système d'échange thermique pour conditionner l'air intérieur d'un espace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2761232A1 true EP2761232A1 (fr) | 2014-08-06 |
| EP2761232B1 EP2761232B1 (fr) | 2017-09-06 |
Family
ID=47071350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12775765.6A Not-in-force EP2761232B1 (fr) | 2011-09-28 | 2012-09-25 | Système d'échange thermique pour conditionner l'air intérieur d'un espace |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2761232B1 (fr) |
| FR (1) | FR2980560B1 (fr) |
| WO (1) | WO2013045801A1 (fr) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2130327A (en) * | 1932-12-24 | 1938-09-13 | Baldwin Southwark Corp | Air conditioning apparatus |
| DE1604301B1 (de) * | 1965-04-24 | 1970-01-29 | Steeb Christian | Geraet zum Temperieren eines Raumes |
| US4733542A (en) * | 1986-12-05 | 1988-03-29 | Enviromaster International Corporation | Cabinet for air conditioning system |
| US5533357A (en) * | 1995-02-15 | 1996-07-09 | Carrier Corporation | Air conditioning apparatus |
| KR100214639B1 (ko) * | 1996-12-21 | 1999-08-02 | 구자홍 | 공기조화기의 상방흡입 횡류형 실내기 |
| DE19937083C1 (de) * | 1999-08-06 | 2001-02-15 | Hagenuk Faiveley Gmbh & Co | Tropfenabscheider für Fahrzeuge, insbesondere für Schienenfahrzeuge |
-
2011
- 2011-09-28 FR FR1158715A patent/FR2980560B1/fr active Active
-
2012
- 2012-09-25 EP EP12775765.6A patent/EP2761232B1/fr not_active Not-in-force
- 2012-09-25 WO PCT/FR2012/052129 patent/WO2013045801A1/fr not_active Ceased
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2013045801A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013045801A1 (fr) | 2013-04-04 |
| EP2761232B1 (fr) | 2017-09-06 |
| FR2980560A1 (fr) | 2013-03-29 |
| FR2980560B1 (fr) | 2013-10-18 |
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