ES2201261T3 - HEATING AND REFRIGERATION DEVICE MOUNTED ON THE ROOF. - Google Patents

Abstract

AN APPLIANCE TO BE MOUNTED ON THE CEILING (10) THAT DRAGS AIR UP THROUGH AN INPUT HOLE AND TREATS THE AIR THROUGH HEAT CHANGING ELEMENTS (36) BEFORE DISTRIBUTING THE AIR DOWN. PREFERENTLY, THE AIR DISTRIBUTES IT DOWN A DOWNLOAD STRUCTURE OF AIR THAT SURROUND THE HEAT CHANGING ELEMENTS (36). THE AIR IS DISCHARGED FINALLY THROUGH ONE OR MORE AIR DISCHARGE DUCTS (28) THAT ARE PLACED RELATIVELY NEAR THE AIR ADMISSION HOLE. EACH AIR DISCHARGE DUCT (28) INCLUDES A ROTARY GRILLE (20) INSIDE MOUNTED TOGETHER WITH THE WALLS OF THE CONDUCT DEFINES PARTICULAR CIRCUITS FOR AIR CONDITIONING INTENDED TO HEAT INSTEAD OF COOLING.

Description

Heating and cooling device mounted on ceiling.

This invention relates to apparatus of heating and cooling mounted inside a suspended ceiling in a house, office or other building space. In particular, This invention relates to the treatment of air through such appliances

So far it has been known to mount a device heating or cooling on a suspended ceiling of a room or space that will be heated or cooled. Of this mode the mounted apparatus typically sucks air through a input provided on the device. The air thus sucked It is circulated through the heat exchange elements appropriate before leaving through one or more arranged exits on the device

The ceiling mounted device typically includes a fan device to aspirate the air that is going to Be treated and downloaded. This fan device can create an important suction pressure at the air inlet. Is suction pressure can aspirate the air being discharged from the ceiling mounted device back inside the device. The recirculation of this air discharged again through the heat exchange elements low heating efficiency or cooling of the device. It can also affect the integrity of long-term heat exchange elements that are being exposed to recirculated air that does not need to be besides heated or cooled.

The potential for air recirculation discharged again through an air inlet of the device ceiling mounted has so far been facing providing air outlets that direct the discharged air away from the air inlet for example the document US-A-5577958 describes a device which adjusts the direction of the wind that has a deviation guide in the wind path. The document DE-UI-29601794 describes a unit of air conditioning that has a diversion device in the flow path. The document JP-A-01 075823 describes an air conditioning that has an air diverter in the duct of air discharge The document JP-A-08 100942 describes an air conditioning that has a horizontal sheet of motion over pivot of the air outlet port. However it has been found that this directional discharge is difficult to achieve when air outlets are relatively close to the entrance of air.

It is an object of the invention to provide a heating or cooling device mounted inside a ceiling suspended that maintains an appropriate air distribution heated or cooled that does not interfere with the air inlet within the same device.

It is another object of the invention to provide a heating or cooling apparatus for mounting inside a Suspended ceiling that defines two air flow paths different for air conditioning leaving the device that reaches the Optimum air flow for heated and cooled air from the ceiling mounted device.

According to the present invention a device that can be mounted on the ceiling for heating or air cooling according to claim 1. In one embodiment preferred of the present invention, a heating apparatus or ceiling mounted cooling sucks air up inside of an entrance and treats the air through the elements of heat exchange before air distribution down. The air is preferably distributed down the structure of air discharge surrounding the exchange elements of hot. The air is finally discharged through one or more air discharge ducts positioned relatively close to the air inlet Each discharge conduit includes a record of revolving ventilation mounted there that guides the air inside the conduit. A wall of each discharge duct includes an elbow slightly curved from a preset angular arc that directs the discharged air away from the air inlet of the appliance. Is wall in each duct is relatively close to the entrance of air.

The rotary ventilation register in each air discharge duct preferably rotates between any of the two positions depending on whether the air will be discharged hot or cold The position of the ventilation register when the hot air is going to be discharged produces a flow path of air substantially down to the air leaving the duct. The position of the ventilation log when cold air goes to being discharged produces an air flow path substantially lateral to the air outlet duct.

The air is preferably discharged to a minimum distance from the ceiling in order to avoid any stain of the the ceiling. This is done by a gradually curved wall in each air duct that extends laterally outward in order to define where the air from the duct comes at the minimum distance from the ceiling.

Other features of the present invention will be evident from the following description together with the accompanying drawings, in which:

Figure 1 illustrates a heating apparatus and ceiling mounted cooling that has discharge slots of air located around the perimeter of an inlet grille centrally located air;

Figure 2 illustrates the heating apparatus and cooling before being mounted on the ceiling of figure 1;

Figure 3 is an exploded view of the apparatus heating and cooling of figure 2;

Figure 4 is a sectional view of the apparatus of heating and cooling of figures 2 and 3 illustrating how the air is treated from the inlet to the outlet of an air discharge duct:

Figure 5 is a cross-sectional view. enlarged air discharge duct formed in the most part lowering of the heating and cooling apparatus of figures 2 and 3; Y

Figure 6 is a cross-sectional view. enlarged air discharge duct of figure 5 when the ventilation log rotated there is in a position to Distribute the heated air.

Referring to figure 1, an apparatus 10 Ceiling mounted for heating or cooling air it is illustrated in a mounted position with respect to a roof 12. It note that the apparatus includes an air intake grill 14 centrally located, which allows air to be aspirated from the space that is being heated or cooled. The apparatus of Heating and cooling also includes four slots 16, 18, 20 and 22 air discharge. Each of these download slots of air are part of the air discharge ducts respective distributing treated air from the apparatus again within the space that is being heated or cooled. Must be note that each download slot is located relatively near the centrally located grid 14.

Referring to Figure 2, the apparatus 10 of heating and cooling is shown before being mounted inside the ceiling 12. It should be noted that the heating device and refrigeration includes a housing 24 containing the various components for treating the air that is sucked into the apparatus a through the air intake grill 14.

Referring now to figure 3, the apparatus 10 heating and cooling is illustrated in a view in Exploded view, The bottom portion of the apparatus heating and cooling it is noted that it includes a frame 26 in which are formed four air discharge ducts, such as conduit 28. Each discharge conduit defines one of the respective slots 16, 18, 20, 22 of discharge in the beater 26. A rotary ventilation register as in 30 is positioned inside each air discharge duct. The record of Rotating ventilation 30 is observed to extend along the entire length of the duct 28.

An air filter 32 and the intake grill 14 preferably they fit into a central opening in the frame 26 and are properly secured thereto. Grid 14 input is preferably square in shape and curved slightly upwards towards its center from all four sides.

A centrifugal fan 34 draws air into up through the inlet grill 14 and the air filter 32. This fan distributes the air sucked radially out towards the heat exchange elements 36.

The heat exchange elements preferably consist of a series of coils arranged around the periphery of the centrifugal fan. These coils carry a heat exchange medium that transfers heat to or from a series of heat exchange fins in thermal conductor contact with the coils.

The air flowing out from the fan 32 centrifugal flow is deflected down by structure 38 of air channel as shown in Figure 4. Structure 38 The air channel is preferably molded from polystyrene to in order to form a single lightweight insulating piece that fits inside of housing 24. Air channel structure 38 is observed extending inward along an upper portion 40 of the heating and cooling apparatus to a point beyond the internal perimeter of the fins of the exchange elements of hot. The air channel structure also extends towards below along the inner wall of the housing 24. The air channel structure 38 is also inclined towards the wall internal housing 24 in order to define a radial space continuously rising from the exchange elements of hot. The air channel structure 38 extends downwards in this definable inclination to the top of tray 42 of drainage shown more clearly in figure 3.

Referring again to figure 4, the parts bottom of the fins of the exchange elements 36 of heat rest on the drain pan 42 to allow any condensate of the coils of the elements of heat exchange that will be collected and drained in a slot 44. A slot 45 in the drain pan is aligns with respect to the air channel structure 38 in order to define a continuous air channel down to the duct 28 of air formed in the frame 26. It should be noted that holes Similar grooves in the drain pan define channels of continuous air down to the other discharge ducts of respective air in the frame 26.

The cross section of the frame in the figure 4 reveals that the frame consists of two different structures. The frame includes an outer portion 46 preferably molded of a hard plastic. The frame additionally includes a Lightweight molded polystyrene structure 47 above the 46 portion outside.

Referring again to structure 38 of air channel, it should be noted that this structure forms a internal wall surface, continuous, smooth to divert air down. The upper portion of this wall surface internal, continuous, smooth is preferably a curved arc that It has a constant radius of curvature. The inclined portion of this inner wall is preferably three to five degrees from the vertical. This smooth continuous internal wall ensures that all the air flow evenly down to the grooved hole 46 in the drain pan and therefore to air passage duct 28 formed in the frame 26.

Referring to exchange elements 36 of heat, it should be appreciated that these elements will add heat or will remove heat from the passage of air over the fins depending of the state of the heat exchange medium flowing through the coils of the heat exchange elements. This way, the heating or cooling apparatus will provide air hot or cold to the air discharge ducts in the rack 26. Referring to the air discharge duct 28 in Figure 4, it should be noted that the ventilation register 30 is attached to each end of the rotating elements such as 48 that rotates within a support 50. As will be explained in more detail forward, the vent register 30 is turned to any of the two positions depending on whether the hot or cold air is flowing through the air discharge duct 28. The turn of the ventilation log 30 can be by an engine or through manual adjustment It should be appreciated that ventilation records similar are rotatably mounted and actuated respective in each of the other air discharge ducts formed in the frame 26.

Referring to Figure 5, conduit 28 of discharge inside frame 26 is further illustrated in a view in enlarged cross section. The air discharge duct 28 it is noted that it comprises two continuous wall surfaces indicated as an inner wall surface 52 and a surface 54 external wall. The inner wall surface 52 is relatively close to the inlet grid 14 while the outer wall surface 54 is further from the grid. The outer wall surface 54 appears to be a part of the frame 26 extending outward in a lateral direction away from the portion of the frame 26 that engages inside the ceiling. Is frame portion forms an edge 56 that generally engages against the ceiling when the heating device is mounted there and refrigeration. It should be noted that the outer wall 54 extends out to a point located at a distance "h" by below the top of the edge 56. The distance "h" It is preferably in the range of fifteen to twenty millimeters. This height ensures that no dirt will occur on the roof when air flows out along the wall 54 evenly curved Finally it should be noted that the beginning of the outer wall surface 54 is substantially vertical before that it curves sharply to a point where edge 56 begins. This point is vertically below where the frame 26 engages inside the roof The outer wall surface continues almost laterally from this point to a substantially large radius of curvature until reaching the point of discharge at a distance "h" below the upper edge of frame 56 26.

Referring now to the inner wall 52, it you should note that this wall starts inside the 26 waters frame above where the ventilation register 30 is rotatably mounted inside duct 28. This wall tilts slightly from the vertical to a point vertically below the plane horizontal that contains an axis of rotation of element 48 rotary. The inner wall 52 then comprises an arch substantially curved before tangentially finding a straight inclined wall surface immediately upstream of air outlet point from duct 28.

It should be noted that the total angular change of the inner wall 52 from the first inclined portion of this wall begins where the conduit 28 is formed in the frame 26 to the second portion of the inclined straight wall that ends where the air exits from the duct 28 indicated by the angle α. This angle is determined by the curved arc portion of the internal wall 52 joining the first and second wall portions inclined from the inner wall. This angular change in wall 52 internal is preferably within the range of one hundred and ten to One hundred and thirty degrees. It has been found that when? Is greater than one hundred and thirty degrees, there is potential for recirculation of the air back into the inlet grille 14. It has also been found that when α is less than one hundred ten degrees, there is a poor discharge of hot air.

Referring now to the ventilation register 30 rotatably mounted, it is noted that this ventilation log it comprises two leg portions joined together by a portion of curved arc between them. The curved arch portion defines an angle? between the two straight leg portions of the ventilation log The curved arch portion preferably it has a constant radius of curvature so that the angle β defines the total angular measure in degrees of the arc defined by such radius. The angle β is preferably at the range of one hundred ten to one hundred twenty degrees.

The two straight leg portions of the log ventilation 30 preferably define the dimensions "A" and "B" linear. These linear dimensions are defined. extending the longitudinal axes of these leg portions until they intersect at a point in the neighborhood of the portion curved arc The "A" dimension is measured from the tip of the upper leg portion along the longitudinal axis of this upper leg portion of ventilation log to point before mentioned intersection of the longitudinal axes. The dimension "B" is measured along the longitudinal axis of the portion of straight lower leg from the aforementioned intersection point to the tip of the lower leg of the ventilation log. The "A / B" ratio of these dimensions is preferably in the range from 0.4 to 0.6. It has been found that a lower A / B ratio that 0.4 produces a poor air discharge with the potential for recirculation problems with respect to the inlet grid 14 of air. An A / B ratio greater than 0.6 creates a record of ventilation that is too sensitive to positioning rotary.

It should be noted that the ventilation log 30 is shown in figure 5 in its normal position to treat the air cooled inside the air discharge duct 28. To this respect, the point of intersection of the lengths "A" and "B" sized ventilation log is preferably at a distance "F" from the point of the wall 52 where the curved arc portion begins. The point of intersection of the lengths "A" and "B" of the register of ventilation is also at a lateral "G" distance from the highest point of the outer wall 54. The relationship of these F / G dimensions are preferably between 0.8 and 1.2.

The lower leg of the ventilation log 30 during cooling it is preferably at an angle? from sixty to seventy-five degrees from the vertical. This angle allows substantial air flow to either side of the log of ventilation This positioned ventilation log of this mode produces a directional discharge of air from the duct 28 defined by angle δ. The angle δ as measured from the horizontal it will be between five and twenty degrees when the lower leg of the ventilation log is at the angle γ.

Referring now to figure 6, the record of Ventilation 30 is illustrated in the heating mode position. In this regard, ventilation register 30 has been preferably turned clockwise to twenty-five degrees from the cooling mode position such that the lower leg portion moves towards the inner wall 52 while the upper leg portion moves towards the wall 54 external The lower leg portion of the ventilation log 30 is now at an angle \ kappa from thirty-five to fifty degrees with the vertical. The positioned ventilation log of this mode now tends to divert the air from its outward flow otherwise normal dictated by the deviation of the inner wall 52 at the air outlet point from the duct 28. To this respect, the lower leg of the ventilation register 30 tends to deviate from the heated air substantially down with less of a lateral component than when the ventilation log 30 It is in the cooling mode position. Discharge angle the is preferably in the range of forty to Fifty-five degrees with the horizontal. It should be noted that this angle has a lateral component that is substantially less than the lateral component of the angle δ that defines the air discharge direction in cooling mode.

Referring to the inner wall 52 and, in particular, to the angular slope of this wall near the point of air outlet from duct 28. This angular slope is designated as \ phi in Figure 6. This angle as measured from the vertical is preferably halfway between a certain value of κ and a certain value of γ used in a particularly designed conduit. This usually gives as a result an angle \ phi that is in the range of fifty and five to sixty-five degrees. This allows air to flow closer to the inner wall to have a component substantially lateral in heating and cooling with the in order to reduce the risk of any recirculation air to the air intake grille 14.

Referring again to the angles α and β indicating the angular arc of surface curvature 52 internal wall and ventilation log 30, respectively. It should be noted that these angular arcs allow a substantial air flow along the inner wall 52 of the 28 heating and cooling air duct. If the angle α of the arc of the inner wall is however less than one hundred and ten degrees, then the angle \ phi of the slope of exit from this wall increases thereby causing loss of excessive pressure on the side of the inner wall of the log ventilation during heating mode. On the other hand, if the angle? is greater than one hundred thirty degrees, then the slope \ phi of output decreases to the point where the air Discharged can recirculate inside the grid.

It should be appreciated that the passage 28 of conduit air formed in this way in combination with the record of ventilation 30 formed in this way defines two air paths different separated on either side of the ventilation log. These trajectories produce a first air discharge directional for refrigeration versus refrigeration of a second directional discharge for heating. Download path of air for cooling moves the air out substantially laterally from the apparatus in order to avoid creating a cold shot on people inside the room that is being cooled by the device on the ceiling. In contrast, the discharge of heating air is substantially further down to neutralize the trend of heated air to normally rise and not circulate that way Towards the people in the room.

It should finally be appreciated that it has been described a preferred embodiment of the invention. The alterations, modifications and improvements to it will easily occur to Those skilled in the art. Consequently, the above exposed is by way of example only and the invention must be limited only by the following claims.

Claims (15)

1. Apparatus (10) that can be mounted on the ceiling for heating or cooling of air, said said apparatus: an external accommodation (24); a frame (26) containing an input (14) of air, said frame (26) is coupled to said housing (24) external; a fan (34) inside the external housing to aspirate air up through the air inlet (14) in said frame (26) and later to distribute the air sucked radially out; a diversity of exchange elements (36) of heat positioned radially outward from said fan (34) to heat or cool radially distributed air from said fan (34); air channel structure (38) positioned inside the external housing (24) in relation to said fan (34) in order to divert radially distributed air from said fan (34) down; Y at least one air discharge duct (28) in said frame (26) containing the air inlet (14), having said discharge duct (28) a first wall (52) located near at least one edge of the air inlet (14) and a second wall (54) opposite said first wall (52) that is located more outward from the edge of the air inlet (14) than said first wall (52), wherein said first and second walls are continuous, smooth walls formed in said frame (26), and in the that said first wall (52) in said discharge duct (28) it comprises a first portion of a straight wall followed by a curved wall portion followed by a second wall portion straight ending where the air is discharged from the duct (28) discharge, said second straight wall portion being in a angle (α) relative to said first wall portion straight in order to direct the air discharged from the duct (28) of discharge away from the air inlet (14). 2. The apparatus (10) of claim 1, in the that the curved wall portion of said first wall (52) defines an angular (α) arc in the range of one hundred ten to one hundred thirty degrees between said first and second straight portions of said first wall (52). 3. The apparatus (10) of claim 1 or 2, in the one that the second portion of straight wall that ends where the air is discharged from the discharge duct (28) is at an angle from the vertical in the range of fifty-five to sixty Five Grades. 4. The apparatus (10) of any claim precedent, which also includes: a rotating ventilation log (30) mounted within said discharge conduit (28), said register having ventilation (30) rotating a first and second portions of straight leg that are joined together by an arc portion curved between them. 5. The apparatus (10) of claim 4, in the that said curved arc portion between said first and second straight leg portions comprise an arc (β) in the range from one hundred ten to one hundred twenty degrees. 6. The apparatus (10) of claim 4 or 5, in which the longitudinal axes of said first and second portions straight leg are intercepted at a point in order to define a first linear dimensional length (A) along the axis longitudinal of the first leg from the point of intersection to the tip of said first leg and a second dimensional length (B) linear along the longitudinal axis of the second leg from the point of intersection at the tip of the second leg and where the ratio of the first linear dimensional length to the second Linear dimensional length (A / B) is within the range of 0.4 to 0.6. 7. The apparatus (10) of claim 6, in the that the rotating ventilation register (30) is rotatable to the first position when the air is being cooled by said heat exchange elements (36), whereby the intersection point of said first and second axes Longitudinal is at a first horizontal distance (F) from the point of the first wall (52) where the first portion of straight wall and the curved wall portion begins and to a second horizontal distance (G) from the top point of the second wall (54) formed in the frame in which the ratio of the first horizontal distance to the second horizontal distance (F / G) is 0.8 to 1.2. 8. The apparatus (10) of any of the claims 4 to 7, wherein the second straight leg portion of said rotating ventilation register (30) is at an angle with the vertical between sixty and seventy-five degrees when said rotating ventilation register (30) is in the first position. 9. The apparatus (10) of claim 7 or 8, in which said rotating ventilation register (30) is rotatable to a second position when the air is being heated by said heat exchange elements (36), wherein the second straight leg portion of said ventilation register (30) swivel is at an angle with the vertical between thirty and Five and fifty five degrees. 10. The apparatus (10) of claim 5, in the that said rotating ventilation register (30) is rotatable to a first position when the air is being cooled by said heat exchange elements (36), in which the second portion straight leg of said rotating ventilation register (30) is at an angle with the vertical between sixty and seventy five degrees. 11. The apparatus (10) of claim (10), in which said rotating ventilation register (30) is rotatable to a second position when the air is being heated by said heat exchange elements (36), wherein the second straight leg portion of said ventilation register (30) swivel is at an angle with the vertical between thirty and Five and fifty degrees. 12. The apparatus (10) of claim 1, in the that the second wall (54) in said discharge duct (28) includes a continuously curved portion that extends laterally outward towards an outer edge of said frame (26), said curved portion defining the air outlet point closest to a ceiling surface when the apparatus (10) that It can be mounted on a ceiling is mounted on a ceiling. 13. The apparatus (10) of claim 12, in the one that the air outlet point closest to a surface of roof is at a vertical distance from the roof surface which is within a range of fifteen to twenty millimeters. 14. The apparatus (10) of any claim preceding, wherein said air channel structure (38) positioned inside the external housing (24) comprises: a continuous structure that surrounds said heat exchange elements (36) and radially spaced from there at increasing radial distances according to said structure continuous extends down from a point above said heat exchange elements (36) at a point below said heat exchange elements (36). 15. The apparatus (10) of claim 14, in which said structure continues further bends radially inward above said elements (36) of heat exchange in order to define a smooth curved air channel which begins above said exchange elements (36) of hot.