JP4751119B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner, and more particularly to an air conditioner in which warm air or cold air is introduced into an air collision space formed under a floor.

  A general air conditioner releases air heated or cooled by a heat exchanger into a room, and the temperature near the floor becomes relatively low during heating operation in winter, causing a situation where the feet do not warm up. I was letting. Thus, in recent years, floor heating devices have been developed and are becoming increasingly popular. In addition, even during the cooling operation in summer, due to the discharge of cold air into the room, a situation where the body gets too cold in a place where it is directly exposed to the cold air has been caused. In view of this, various measures have been taken such as providing rotating blades on the ceiling so as to stir indoor air.

Therefore, so-called hot water type floor heating (refer to Patent Documents 1 to 4) that circulates hot water and so-called electric floor heating apparatus (refer to Patent Documents 5 and 6) that use a heater cable are included in conventional floor heating devices. there were. The hot water floor heating is configured to circulate water or pure water containing an ethylene glycol heat storage agent under the floor, and the electric floor heating is configured to arrange a heater cable under the floor.
Japanese Patent Laid-Open No. 08-145387 JP 2005-98643 A JP-A-2005-49078 JP 2004-347276 A JP 2005-180831 A JP 2005-61163 A JP 2000-274709 A Japanese Patent Laid-Open No. 2002-13751

  However, in hot water floor heating, a boiler for heating the circulating water and a pump for circulating the water are indispensable, and the entire system becomes expensive, and the maintenance and running costs are very expensive. It was necessary. Circulating water is circulated through a seamless pipe installed under the floor, but when this seamless pipe is broken or has micropores due to some trouble during installation, the circulating water leaks out. Therefore, periodic inspections were necessary even after installation.

  On the other hand, the electric floor heating is based on heating the floor surface with a heater cable, but the temperature of the floor surface is greatly different between when the heater cable is energized and when it is not energized. Therefore, the applicant of the present application has developed a floor heating structure in which a material having a heat storage effect such as sand is provided around the heater cable (see Patent Document 7), and provides this, but eliminates temperature unevenness on the floor surface. However, the rise in temperature rise was poor and the power consumption was large.

  Therefore, the present applicant provides a floor heating device with less temperature unevenness by circulating heated air or cooling air under the floor (see Patent Document 8), but obtains a sufficient air conditioning effect from the floor surface. For this purpose, it was necessary to flow a large amount of air under the floor and simultaneously suck the air under the floor. The reason for this is that, firstly, in order to transmit the amount of heat necessary for heating to the floor surface by the heated air with a low amount of heat, it was necessary to allow a large amount of air to flow in, and secondly, under the floor This is a closed space, so even if air flows in at a high pressure, if there is internal air, it will not be able to sufficiently flow in heated air. There was a need to promote.

  However, releasing a large amount of temperature-adjusted air under the floor is the same as discharging the temperature-adjusted air from the air conditioner into the room, resulting in a relatively expensive electric charge required for heat exchange. It was. Therefore, an air conditioner that can sufficiently raise or lower the temperature of the floor even with a small amount of heated air has been desired.

  The present invention has been made in view of the above points, and an object of the present invention is to provide an air conditioner that can sufficiently perform air conditioning using a small amount of temperature-adjusted air. .

Therefore, the present invention provides an air conditioner including an air collision space formed with a predetermined gap under the floor, wherein the air collision space is divided into a plurality of long air collisions divided by partition walls parallel to a predetermined direction. Each air collision space is provided with an adjustment air inflow portion at one end in the longitudinal direction, and an internal air discharge portion at the other end, and the air at the center in the width direction of the bottom surface of each air collision space. An air supply groove that is continuous in the longitudinal direction of the collision space is configured , the adjustment air inflow portion is an adjustment air inflow portion that is provided near the tip of the air supply groove, and the internal air discharge portion is The gist of the air-conditioning apparatus is an internal air discharge section provided at two locations on both sides of the air supply groove .

According to the above configuration, the adjustment air introduced from the adjustment air inflow portion can be made to flow in the longitudinal direction of the air collision space along the air supply groove. Thereby, even if a large amount of adjustment air does not flow in, the adjustment air can be dispersed in a range from the adjustment air inflow portion to the internal air discharge portion. In addition, the adjustment air that has passed through the ventilation groove is appropriately diffused from the ventilation groove to the air collision space, and heat is transmitted to the floor surface in the air collision space, or heat is absorbed from the floor surface, It is possible to increase or decrease the temperature of the floor surface. Note that the air collision space is not a case where the internal air collides violently, and the air diffused from the ventilation groove collides with the partition walls constituting the air collision space by appropriately moving in the air collision space. It is what comes into contact. Further, the adjustment air inflow portion is provided near the tip of the air supply groove, and the internal air discharge portion is provided at two locations on both sides of the air supply groove. . With such a configuration, the adjustment air flowing from the adjustment air inflow portion is efficiently sent to the air supply groove provided in the bottom surface of the air collision space, and the adjustment air in the air collision space is temporarily sent. After flowing into the air groove, it will diffuse around it.

  In addition, the present invention provides an air conditioner including an air collision space provided with a heat insulation panel under the floor and having a predetermined gap between the heat insulation panel and the back surface of the floor plate, wherein the air collision space has a predetermined direction. A plurality of long individual air collision spaces which are divided into a plurality of partitions by the partition walls parallel to each other, and are constituted by the partition walls, the heat insulation panel surface, and the floor plate back surface. Is provided with an adjustment air inflow portion and an inner air discharge portion at the other end, and the heat insulation panel surface constituting the bottom surface of each air collision space has an air collision space at the center in the width direction of each air collision space. The gist of the present invention is also an air conditioner characterized in that an air supply groove that is continuous in the longitudinal direction is formed.

  According to the above configuration, since the air collision space is formed by the gap between the back surface of the floor board and the heat insulating panel, heat is prevented from escaping from the adjusted air that collides with or contacts the heat insulating panel or is absorbed in reverse. When the battery collides with or comes into contact with the back surface of the floor board, the heat of the adjusted air is transmitted, or the adjusted air absorbs the heat, and the temperature of the entire floor board can be raised or lowered.

In the upper Symbol onset bright, the conditioned air inflow part may be those composed of conditioned air inflow portion provided near the tip of the air supply groove, also, the internal air outlet is, the It may be configured by internal air discharge portions provided at two locations on both sides of the air supply groove. With such a configuration, the adjustment air flowing from the adjustment air inflow portion is efficiently sent to the air supply groove provided in the bottom surface of the air collision space, and the adjustment air in the air collision space is temporarily sent. After flowing into the air groove, it will diffuse around it.

  Moreover, in the said invention, it can be set as the structure which provides one or several air collision board in the said air supply groove | channel. According to such a configuration, the adjustment air that flows in from the adjustment air inflow portion and moves along the air supply groove is blocked or inhibited by the air collision plate, and the flowing adjustment air flows into the air supply groove. Before reaching the end (in the vicinity of the internal air discharge portion), it is diffused from the air supply groove to the periphery thereof, and the flow of the adjustment air in the air collision space can be activated.

  In this case, the air impingement plate can be configured to block a part or all of the cross section of the air supply groove. Such a configuration is appropriately corrected according to the state of the adjustment air moving along the air supply groove. However, when the flow velocity of the air passing through the ventilation groove is small, the structure near the bottom of the ventilation groove is used. It may be configured to block only a part, and when the flow rate is high, an air collision plate is formed by a plate material having the same shape as the cross-sectional shape of the ventilation groove, and the air passing through the ventilation groove is temporarily removed. Can be passed. In this case, air flowing along the ventilation groove collides with the air collision plate, but the air collision plate does not block the flow of air, and part of the adjustment air is Since it flows along the ventilation groove again after passing through the upper edge of the collision plate, the adjusted air after passing through the air collision plate is changed to turbulent flow or vortex flow.

  Furthermore, in the above invention, the upper opening of the air supply groove may be closed by a shielding plate in which a plurality of through holes aligned in the longitudinal direction are formed at appropriate intervals. In this case, since the entire air supply groove is filled with the adjustment air and then moves from the through hole to the air collision space, the temperature of the air flowing into the air collision space can be stabilized. In addition, since the ventilation groove is disposed at approximately the center in the width direction of the intake collision space, it is possible to adjust the temperature mainly in the center of the floor plate constituting the air collision space and secondarily in the vicinity thereof.

  In this case, the said through-hole can be comprised by the single long hole continuous in the longitudinal direction of an air supply groove | channel. In the case of such a long groove, the condition that the adjustment air is ejected from each through hole does not appear, and depending on the condition of the adjustment air that passes through the air supply groove, the air collision from the appropriate place Adjustment air will move to space. Therefore, since the step of ejecting air is not necessary, the adjustment air can be diffused throughout the air adjustment space even with a small amount of adjustment air.

  Moreover, in each said invention, the said partition can be set as the structure used when the flooring is stretched. This configuration is a configuration that can be applied to a general floor heating device, and a general flooring configuration is such that a small joist is provided on a floor board stretched on a large daikon jo The floor material is stretched on the floor, but the small joists are arranged at regular intervals, so that the air collision space is configured according to the pitch of the small joists. In addition, when the air collision space is configured by using the heat insulation panel, the thickness of the heat insulation panel is configured to be short from the height of the small joists to the dimension corresponding to the gap of the air collision space. Regardless of the presence or absence of the heat insulation panel, the present air conditioner can be similarly realized by the floor structure.

  According to the present invention, the temperature in the air collision space under the floor can be increased or decreased even when a small amount of temperature-adjusted air is used, and the temperature of the floor surface can also be increased or decreased. It realizes air conditioning by floor heating or floor cooling.

  In addition, in the present invention, since heated air and cooling air are used, a heat exchanger such as an air conditioner can use a gas exchanger in addition to an electric type, and an existing air conditioner can be used. In addition, when a new air conditioner is introduced, the type of the air conditioner is not questioned, so there is a wide range for consumers to choose from.

  In the present invention, a fan with a predetermined capacity is used to flow heated air or cooling air into the air collision space. However, a liquid with a large specific gravity is circulated as in hot water floor heating. Compared to the above, since it supplies very light air, the power consumption required for the operation of the fan can be low.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the first embodiment, as shown in FIG. 1, an air collision space 3 is formed between a plywood 1 provided under the floor and a floor surface 2, and heated air or cooling air flows into the air collision space 3. It is the composition to make it. In a general underfloor structure, a plywood 1 is stretched on the upper surface of the radish 4 and a small radish 5 is further provided on the plywood 1, and the plywood 21 constituting the floor 2 is finished on the upper surface of the small radish. A material (flooring material) 22 is stretched. A heat insulating material 6 is provided in the gap between the radish 4 to insulate between the plywood 1 and the foundation, and the small radish 5 is appropriately cut at a location so that the flow of heated air or cooling air is reduced. A road is formed.

  Here, details of the air collision space 3 will be described. As shown in FIG. 2, the air collision space 3 of the present embodiment includes a plywood 1 stretched on the upper part of the radish 4 and a floor surface 2 (FIG. 1) stretched on the upper surface of the small radish 5. In addition, it is formed in a small space by the small joists 5. And the panel member is provided in the part corresponding to the bottom face of the air collision space 3, The heat insulation panel 3 by a foamed resin is used for this panel member. Therefore, the actual air collision space 3 is formed by a slight gap with the plywood 1 having the heat insulating panel 31 as a bottom surface. Further, the small joists 5 that divide the air collision space function as partition walls, and horizontal members 32 and 33 having the same height as the small joists 5 are provided at both ends in the longitudinal direction of the air collision space 3, A quadrilateral closed space is formed.

  The horizontal members 32 and 33 constitute an inlet and an outlet of the air collision space 3. That is, one horizontal member 32 functions as the adjustment air inflow portion 32, and the other horizontal member 33 functions as the internal air discharge portion 33. In the present embodiment, a through hole 34 is formed in substantially the center of the adjusted air inflow portion 32 (approximately the center in the width direction of the air collision space 3), and in the vicinity of both ends of the internal air discharge portion 33 (in the width direction of the air collision space 3). Notch grooves 35 and 36 are provided in the vicinity of both ends). The cutout grooves 35 and 36 are configured to open on both sides in the thickness direction so as to communicate with the inside and outside of the internal air discharge portion 33.

  In addition, the thickness of the heat insulation panel 31 constituting the bottom surface of the air collision space 3 is slightly smaller than the height of the small joists 5, and further, in the longitudinal direction at the center of the width direction of the heat insulation panel 31. A continuous air supply groove 37 is provided. The air supply groove 37 is provided with a substantially semicircular cross-sectional shape, the arc-shaped portion of the semicircle forms the surface of the air supply groove 37, and the diameter portion is open. The air supply groove 37 is provided in a range from one end of the heat insulating panel 31 to the other end.

  FIG. 3 shows a state in which the air collision space 3 is configured by the above members. As shown in this figure, the surface of the heat insulation panel 31 is positioned slightly below the upper surface of the small joist 5 and the flooring 2 is stretched to the height of the upper surface of the small joist 5 to A space corresponding to the clearance is formed. This is called an air collision space. The adjustment air inflow portion 32 and the internal air discharge portion 33 provided at both ends in the longitudinal direction of the heat insulating panel 31 except for openings (through holes 34 or notch grooves 35, 36) provided in a part thereof. Is provided so as to close the air collision space 3.

  4 (a) to 4 (c) show end views of cut sections of IVA-IVA, IVB-IVB, and IVC-IVC in FIG. As shown in this figure, in the adjusted air inflow portion 32, only the through hole 34 is opened, and the adjusted air can flow into the air collision space 3 from this through hole 34 (FIG. 4). (See (a)). Further, in the portion where the air collision space 3 is provided, an air supply groove 37 exists on the bottom surface thereof, and the adjustment air that flows in through the through hole 34 of the adjustment air inflow portion 32 enters the air supply groove 37. It moves in the state along (see FIG. 4B). This air movement will be described later. Further, only the notch grooves 35 and 36 are also opened in the internal air discharge portion 33, and the air that has flowed through the air collision space 3 passes through the notch grooves 35 and 36, so (See FIG. 4C).

  Since the configuration is as described above, in this embodiment, the cross-sectional area of the through hole 34 of the adjustment air inflow portion 32 and the sum of the cross-sectional areas of the two notch grooves 35 and 36 of the internal air discharge portion 33 are substantially equal. Each size is adjusted to be the same. That is, the balance between the air flowing into the air collision space 3 and the amount of air discharged from the air collision space 3 can be adjusted. Therefore, if the speed of the air passing through the notch grooves 35 and 36 is approximately the same as the speed of the air passing through the through hole 34, the same amount of internal air as the air that flows in will be discharged. Since air itself is a compressed fluid, the same amount of air can be discharged even when the passage speeds are different.

  Next, the flow state of air in the air collision space 3 will be described. Although it is not possible to clearly grasp the air flow state, it can be predicted from an increase in the surface temperature of the flooring 2. In other words, in the initial stage of operation, it was confirmed that the air collision space 3 was lifted from the floor surface located substantially in the center. As shown in FIG. 5 (a), this means that the air flowing in from the adjusted air inflow portion 32 flows along the air supply groove 37 up to the vicinity of the center of the air collision space. To be judged. Then, the temperature rise was confirmed in a wide range from the start of operation for about 30 minutes to the vicinity of the adjusted air inflow portion 32 and the internal air discharge portion 33 in the air collision space 3. As a result, the inflowing air diffuses in the middle of reaching the center of the air collision space, but from the vicinity of the center of the air collision space, the flow of air is decelerated and the air diffusion is expected to become intense. . In addition, the temperature in the width direction at each of these positions similarly increases except for the edge portion (near the small joist 5), so that as shown in FIG. It is expected that the floor collides with the interior of the space and transfers heat to the flooring 2.

  Thus, providing the air supply groove 37 at the bottom of the air collision space 3 results in giving a certain degree of directivity to the inflow of the adjusted air, and the air supply groove 37 is open at the top. Even if the air flows along the air supply groove 37, the air that has flowed into the space similar to the closed state diffuses around the air supply groove 37 and the inflow speed gradually decreases. This leads to the internal air discharge portion 33 at the end of the object. Then, the air that has reached the internal air discharge portion 33 is branched to both sides in the internal air discharge portion 33 and discharged outward from the cutout grooves 35 and 36. Thus, by appropriately diffusing inside the air collision space 3, the temperature of the flooring 2 can be appropriately increased or decreased without supplying a large amount of adjustment air. The air supply groove 37 opens in the air collision space 3 along the longitudinal direction, and the distance from the bottom of the air supply groove 37 to the floor surface 2 is from the surface of the heat insulating panel 31 to the floor surface. It is considered that the air supplied to the air collision space 3 can flow more easily in the air supply groove 37 than the surface of the heat insulation panel 31 because it is larger than the distance up to 2.

  Next, a second embodiment will be described. In the present embodiment, the basic configuration is the same as that of the first embodiment, and portions that are not described are omitted. If only different portions are described, as shown in FIG. That is, an air collision plate 138 is provided. The surface of the air impingement plate 138 is provided in accordance with the transverse cross-sectional direction of the air supply groove 137, and a part of the edge is provided in close contact with the arcuate surface of the air supply groove 137 having a semicircular cross section. Yes. That is, a part of the edge of the air impingement plate 138 is formed in an arc shape similar to the arc forming the cross section of the air supply groove 137, and the end edge is provided in contact with the arcuate surface of the air supply groove 137. It is

  The surface of the air impingement plate 138 may have the same shape as the semicircular shape of the air supply groove 137, but may be configured smaller than the semicircular shape of the air supply groove 137 as shown in the drawing. . The size of this type of air collision plate 138 is adjusted according to the flow rate or flow rate of the adjustment air supplied to the air supply groove 137. That is, when the flow velocity or flow rate of the adjustment air is large, the air collision plate 138 is configured to be relatively large. Conversely, when the flow velocity or flow rate is small, the air collision plate 138 is configured to be relatively small, The amount of air flowing along the air supply groove 137 on the downstream side of the air collision plate 138 is adjusted. Even when the air collision plate 138 is configured to be smaller than the air supply groove 137 as described above, the arc-shaped end edge is configured to be able to contact the arc-shaped surface of the air supply groove 137.

  Further, the air collision plate 138 as described above may be provided at a plurality of locations in addition to the case where the air collision plate 138 is provided at one location of the continuous air supply groove 137 (in the case of illustration). Furthermore, in addition to the case where the air supply groove 137 is provided at a position of about two thirds from the adjusted air inflow portion 132 (in the case of illustration), the air supply groove 137 is provided at a position of about one half or one third. There may be cases. The number and position of the air collision plates 138 vary depending on the flow velocity or flow rate of the supplied adjustment air, but normally the adjustment air flows up to about two thirds of the total length of the air supply groove 137. Therefore, by providing the air collision plate 138 at a position that is about a half of the total length, the adjustment air along the air supply groove 137 can be flowed, and the air flow after colliding with the air collision plate 138 It is considered that the diffusion of air on the downstream side of the air impingement plate 138 can be promoted by changing the turbulence or vortex flow.

  Next, a third embodiment will be described. In the present embodiment, as shown in FIG. 7, the upper opening of the air supply groove 237 is closed by the shielding plate 207 and only the through hole 271 is opened. As shown in FIG. 7A, the shielding plate 207 is formed in a long thin plate shape, and closes the air feeding groove 237 as a whole. It is possible to reach the air collision space 203 only via the H.271. Therefore, as shown in FIG. 7B, after the adjustment air is fully filled in the ventilation groove 237, it is jetted into the air collision space, and the air that has passed through the through-hole 271 enters the floor material 202 immediately above it. After the collision, the air flows inside the air collision space 203.

  In the present embodiment, the supplied adjustment air is slightly pressurized and maintained at a positive pressure inside the air supply groove 237. The positive pressure air is ejected into the air collision space 203. The air ejected into the air collision space 203 collides with the surface of the member constituting the collision space 203 as appropriate, and then the internal air discharge. It is discharged outward from the notch groove of the part. Accordingly, the jet flow that has decreased in momentum gradually moves to the internal air discharge section, and the internal air in the air collision space 203 is circulated in sequence.

  Although the embodiments of the present invention have been described above, various aspects can be taken without departing from the spirit of the present invention. For example, the air supply grooves 37, 137, and 237 have been described only in the configuration having a semicircular cross section, but this shape may be a quadrilateral, and the air impingement plate 138 has an entire cross section of the air supply groove 137. It is also possible to make it a shape that can be closed and further project into the air collision space 103. The through-hole 271 provided in the shielding plate 207 can be a single long hole that is continuous in a slit shape. In this case, if the width dimension of the slit is small, the adjusted air that has flowed into the air feeding groove 237 is jetted toward the air collision space 203 after being pressurized. The air groove 237 is appropriately diffused without being pressurized, and becomes a form similar to the first embodiment.

  Moreover, as shown in FIG. 8, it can also be set as the structure which provides the air discharge hole 35 which penetrates substantially the center of the internal air discharge part 33. As shown in FIG. In this case, if a hole having the same cross-sectional area as that of the adjusted air inflow hole 34 is formed, air passing through the ventilation groove 37 may be easily discharged outward. 34 can be made smaller. In order to adjust the pressure in the air collision space at this time, the inflow amount of the adjustment air may be adjusted.

  Examples of the above embodiment will be described below. The adjusted air used in this embodiment is air whose temperature has been adjusted by an air conditioner. The air conditioner is installed indoors, and a part of the adjusted air discharged from the blower part is branched into a duct. Further, a sirocco fan (manufactured by Mitsubishi Electric Corporation) is used in this duct, and the flow rate at the adjusted air inflow part is 100 per hour. It adjusts to cubic meters and flows in from the adjusted air inlet. Therefore, the heating efficiency was experimented with various dimensions of X = 303 mm, Y = 900 mm (Y1 = Y2 = Y3 = 300 mm), and φ = 50 according to the shape shown in FIG. Note that the difference between the height of the small joists and the thickness of the heat insulating panel is 10 mm.

  In the above embodiment, when the operation was started with the temperature setting of the air conditioner set at 25 ° C., the temperature of the floor surface (surface of the finishing material) at each point A, B, C after about 30 minutes was 30.8 °. The temperature rose from C to 32.4 ° C. The place that showed the highest temperature was A1, which was 32.4 ° C, while the lowest temperature was B2, which was 30.4. In addition, B1 was 31.4 degreeC and C1 was 31.2 degreeC. A2 was 32.0 ° C, A3 was 32.2 ° C, and B3 was 31.4 ° C. C2 and C3 were both 30.8 ° C.

  Considering the above embodiment, the floor surface temperature located immediately above the ventilation groove 37 is significantly higher than the surrounding floor surface temperature, and the adjustment air flowing in from the adjustment air inflow portion moves along the ventilation groove 37. I can understand that. Further, since the temperature difference between the point B1 and the point C1 is 0.2 ° C., it is expected that the adjusted air diffuses in the vicinity of the location A1, and then reaches C1 while gradually converting. Is done. Therefore, it is considered that the point at which the temperature becomes the highest can be moved by increasing the inflow speed by increasing the flow rate of the adjustment air.

  Further, when the air collision plate was installed at the point B1, the floor surface temperature was 31.0 ° C to 32.8 ° C, and the place where the highest temperature was shown was C1. Considering this embodiment, by providing an air collision plate in the middle of the air supply groove, the air flowing along the air supply groove is decelerated, or changed into turbulent flow or vortex flow. It is thought that the collision of air in can be promoted.

It is explanatory drawing which shows the outline of 1st embodiment of this invention. It is assembly explanatory drawing of each member which comprises an air collision space. It is explanatory drawing of an air collision space. (A) is IIIA-IIIA sectional drawing, (b) is IIIB-IIIB sectional drawing, (c) is IIIC-IIIC sectional drawing. It is explanatory drawing which shows the flow state of the internal air of the air collision space in 1st embodiment. It is explanatory drawing which shows 2nd embodiment of this invention. It is explanatory drawing which shows 3rd embodiment of this invention. It is explanatory drawing which shows other embodiment of this invention. It is explanatory drawing for displaying the point of the temperature measurement in an Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Plywood 2 Floor surface 3 Air collision space 4 Daikonta 5 Koneta 6 Insulating material 21 Plywood 22 Flooring 31,131,231 Insulating panel 32,132,232 Adjusted air inflow part 33,133,233 Internal air exhaust part 34,134 Through hole 35, 36, 135, 136 Notch groove 37, 137, 237 Ventilation groove 138 Air collision plate

Claims (8)

In an air conditioner including an air collision space formed with a predetermined gap under the floor, the air collision space is a plurality of long air collision spaces divided by a partition wall parallel to a predetermined direction. In the collision space, an adjustment air inflow portion is provided at one end in the longitudinal direction, and an internal air discharge portion is provided at the other end, and at the center in the width direction of the bottom surface of each air collision space in the longitudinal direction of the air collision space. A continuous air supply groove is formed , the adjustment air inflow portion is an adjustment air inflow portion provided near the tip of the air supply groove, and the internal air discharge portion is provided on both sides of the air supply groove. An air conditioner characterized in that it is an internal air discharge part provided at two places . In an air conditioner provided with a heat insulation panel under the floor and having an air collision space formed with a predetermined gap between the heat insulation panel and the back surface of the floor plate, the air collision space is divided into a plurality of partitions by parallel walls in a predetermined direction. A plurality of long individual air collision spaces that are divided into the partition walls, the heat insulation panel surface, and the floor plate back surface, and each air collision space has a regulated air inflow portion at one end in the longitudinal direction. However, an internal air discharge portion is provided at the other end, and the surface of the heat insulating panel constituting the bottom surface of each air collision space is continuous in the longitudinal direction of the air collision space at approximately the center in the width direction of each air collision space. An air conditioner comprising an air supply groove. The adjustment air inflow portion is an adjustment air inflow portion provided near the tip of the air supply groove, and the internal air discharge portion is an internal air discharge portion provided at two positions on both sides of the air supply groove. there claim 2 Symbol placement of the air conditioner. The air conditioner according to any one of claims 1 to 3, wherein the air supply groove is provided with one or a plurality of air collision plates. The air conditioner according to claim 4, wherein the air collision plate is an air collision plate capable of blocking part or all of a cross section of the air supply groove. The air conditioner according to any one of claims 1 to 3, wherein the upper opening of the air supply groove is closed by a shielding plate in which a plurality of through holes aligned in the longitudinal direction are formed at appropriate intervals. The air conditioner according to claim 6, wherein the through hole is a through hole configured by a single long hole continuous in the longitudinal direction of the air supply groove. The air conditioner according to any one of claims 1 to 7, wherein the partition wall is a joist used when flooring is stretched.