JP6179035B2 - Heat storage type heat medium circulation type air conditioner and heat storage material container used therefor - Google Patents

Description

  TECHNICAL FIELD The present invention relates to an air conditioner for adjusting a room temperature by circulating and circulating a temperature-controlled heat medium around a pipe stretched around a floor, and a heat storage material container used therefor, in particular, a heat storage material in a space where a pipe is arranged. The heat storage type heat medium circulation type air conditioner that maintains the air conditioning function for a relatively long time even if the circulation of the heat medium is stopped, and the container that accommodates and stores the heat storage material .

  2. Description of the Related Art In recent years, heat medium circulation type floor heating devices that heat by circulating and circulating hot water heated to a temperature higher than room temperature by a heat pump water heater through pipes stretched in the floor constituent materials have become widespread. Of the floor heating using this heat pump, the one that operates with electric power is evaluated as one of the excellent air conditioners in that the combustion gas is not discharged at the place of implementation and the room is not easily dried. Moreover, since this apparatus warms gently from the floor surface which is easy to cool, it is excellent also from the viewpoint of occupant comfort.

  However, it is not possible to store the heat generated by the heat medium simply by circulating the heat medium in the pipes arranged on the floor component, and the heating function disappears in a relatively short time if the heat medium is stopped. Therefore, it is impossible to reduce the operating cost of air conditioning by using inexpensive late-night power. Therefore, as described in Japanese Patent Application Laid-Open No. 8-5105, the floor pipe is embedded in the concrete so that the heat storage function of the concrete continues the air conditioning function for a long time even after the circulation of the heat medium is stopped. A heat storage type system has also been proposed.

  However, when concrete is filled in the lower space of the floor finishing material in this way and pipes are embedded, it takes about one year for the concrete to dry completely, and this moisture tends to cause mold and corrosion. In addition, the presence of the hardened concrete block tends to make it difficult to perform maintenance work on the floor components and pipes.

  On the other hand, Japanese Patent Laid-Open No. 2002-54818 proposes a method in which gravel is filled instead of filling concrete in the lower space of the floor finishing material provided with pipes. In this way, by adopting a dry construction method that only fills the gravel, in addition to not requiring a period for drying, various maintenance operations can be performed relatively easily, and the characteristics of the gravel It is possible to realize a longer heat dissipation time than concrete.

  However, in such a system in which the pipe is embedded in the heat storage material, there is a problem that the start-up time of the air conditioning function tends to be delayed as in the case of using the above-described concrete. Therefore, the present applicant / inventors previously formed lava stones containing iron and bubbles in a stone-like shape instead of filling concrete or boulder gravel in the lower space of the floor finishing material in Japanese Patent Application Laid-Open No. 2011-174659. A pipe heat sink (heat radiating panel) in which a concave portion having a shape corresponding to the groove is press-molded is disposed on the upper surface, and the pipe is placed in the concave portion. We proposed a method of distributing warm water.

  That is, by arranging a metal heat sink on the upper surface of the stone plate as a heat storage material and placing a pipe in the groove and recess, the heat storage material is heated with hot water and at the same time the floor finish material is passed through the heat sink. Since the heating function can be directly heated, the rise of the heating function is rapid, and the characteristics of the lava stone make it possible to realize a relatively long heat dissipation time even after the circulation of the heat medium.

  However, in this system as well, as in the system using gravel for the heat medium described above, heat exchange occurs between the bottom surface and the side surface of the heat medium via the bottom surface and the side surface of the heat medium. However, there is room for improvement from the standpoint of performance, and since a relatively high cost is required for procurement of the heat medium, there has been a problem that it is difficult to achieve a reduction in construction cost.

JP-A-8-5105 JP 2002-54818 A JP 2011-174659 A

  The present invention is intended to solve the above-described problems, and in a heat storage type heat medium circulation type air conditioner that circulates and circulates a heat medium through a pipe stretched around a floor, It is an object of the present invention to be able to realize the sustainability of the air-conditioning function after stopping and the rapid start-up after starting at a high level while being low cost.

  Accordingly, the present invention provides a pipe through which the heat medium conditioned and delivered by the heat medium temperature adjusting means circulates and circulates, and at least a part of the pipe in the lower space of the floor finishing material around which the pipe is stretched. And a heat storage material arranged so as to be buried, while adjusting the room temperature through the floor surface while circulating the heat medium adjusted to a temperature higher or lower than the room temperature, and stopped the circulation of the heat medium In the heat storage type heat-medium circulation type air conditioner that is to maintain air conditioning due to the temperature difference between the heat storage material and room temperature afterwards, the heat storage material is filled in a plurality of heat storage material containers whose upper surfaces can be opened and closed, The pipes are respectively disposed laterally penetrating the upper end side of the heat storage material container.

  In this way, the heat storage material for maintaining the air-conditioning function after stopping the circulation of the heat medium is used to fill and arrange multiple containers, which greatly simplifies the construction work. In addition to keeping the construction cost low, the heat storage material can be stored in the container, so that heat transfer through the bottom and side surfaces can be suppressed after temperature adjustment. The air conditioning function can be sustained, and the amount of direct heat transfer between the floor and the floor is increased by adopting a system in which the pipe penetrates the upper end of the container filled with the heat storage material. For this reason, the air-conditioning function starts up quickly after the apparatus is started.

  Further, in this heat storage type heat medium circulation type air conditioner, on the upper surface side of the heat storage material container, a groove-like recess having a depth and width equal to the diameter of the pipe is formed along the path through which the pipe passes. And a heat sink made of sheet metal is disposed, and the upper surface of the heat sink and the upper end side of the pipe are in close contact with or close to the back surface of the floor finishing material while the pipe fits in the recess. In this case, since the metal heat radiating plate that has exchanged heat with the pipe directly transfers heat to and from the floor finishing material, the start-up of the air conditioning function becomes extremely rapid.

  Further, in the above-described heat storage type heat medium circulation type air conditioner, a heat reflecting sheet is disposed at least on the bottom or bottom side of the heat storage material container, and heat between the heat storage material side and the underfloor space side is disposed. If it is characterized by reducing the amount of movement, it becomes easy to realize air conditioning with excellent thermal efficiency.

  Furthermore, in the above-described heat storage type heat medium circulation type air conditioner, legs are protruded downward at a predetermined position on the bottom surface of the heat storage material container, and the bottom surface is lifted. If the air layer is formed between the installation surface and the installation surface, the amount of heat transfer between the heat storage material side and the underfloor space side can be further reduced.

  In addition, in the above-described heat storage type heat medium circulation type air conditioner, if the heat storage material is mainly composed of sand, the procurement cost is relatively low but the heat storage function is excellent. In addition, the humidity control function is excellent.

  In addition, a heat storage material container used by filling the heat storage material in the above-described heat storage type heat medium circulation type air conditioner, the upper surface side of which is configured with an openable lid, and the pipe is connected to the upper end of the heat storage material container. If the side has a shape that penetrates sideways at a height that substantially matches the upper surface of the lid, the above-described air conditioning can be easily realized by using this heat storage material container. .

  In this case, each side surface of the heat storage material container is inclined downward by a predetermined angle, and can be stacked vertically while inserting the bottom side of another heat storage material container into the opening from which the lid is removed. If it is characterized, it becomes possible to keep the space for storage and transportation small.

  According to the present invention in which a heat storage material is filled in a plurality of heat storage material containers and provided with a pipe of a floor component material, the sustainability of the air-conditioning function after stopping the heat medium flow and the quick start-up after starting, Although it is low cost, it can be realized at a high level.

It is a fragmentary longitudinal cross-sectional view of the heat storage type heat medium circulation type air conditioner which is an embodiment by the present invention. FIG. 2 is a partially enlarged view in which a portion of a heat storage material container filled with a heat storage material is enlarged in the heat storage type heat medium circulation type air conditioner of FIG. 1. It is a disassembled perspective view for demonstrating the structure of the thermal storage material container of FIG. It is a top view which shows an example of arrangement | positioning of the heat sink of the thermal storage material container of FIG. It is a partial top view of the state which removed the floor finishing material of the thermal storage type heat medium circulation type air conditioner of FIG. (A) is a longitudinal cross-sectional view which shows the application example of the thermal storage material container of FIG. 3, (B) is a partial longitudinal cross-sectional view which shows the state which has arrange | positioned the container of (A) in the lower space of floor finishing materials. It is an expansion | deployment top view of the heat | fever reflection sheet arrange | positioned inside the heat storage material container of FIG.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 shows a partial longitudinal sectional view of a floor heating apparatus 1A according to the present embodiment. This floor heating device 1A is a kind of regenerative heat medium circulation type air conditioner, but it is among the floor constituent materials composed of Oji 3, structural plywood 6, joists 13, 13,. A part of the floor heating system that adjusts the room temperature through the floor surface while circulating and circulating hot water adjusted to a temperature higher than room temperature with a heat pump water heater (not shown) in the pipe 100 stretched horizontally is configured. ing.

  Such a floor heating apparatus 1A includes a pipe 100 through which hot water sent from a heat pump water heater as a heat medium temperature control means flows and circulates, and a joist 13, 13 below the floor finishing material 5 around which the pipe 100 is stretched. In a plurality of spaces 50 formed between 13,..., At least a part of the pipe 100 is provided with sand 300 as a heat storage material disposed so as to be buried, Even after the stop, while the heated sand 300 has a temperature difference from the room temperature, it releases heat and maintains the heating function.

  In the present invention, the sand 300 used as the heat storage material is filled in a plurality of heat storage material containers 10A having a square shape in a plan view whose upper surface can be opened and closed by the lid 14, and the joist. In each space 50 formed between 13, 13,..., The pipe 100 through which the hot water flows is arranged in a state of penetrating the upper end side of the heat storage material container 10A laterally.

  As described above, by adopting a method in which the heat storage material is filled and arranged in the plurality of heat storage material containers 10A, the construction work of the floor heating device 1A is facilitated, so that the construction cost is lower than the conventional example. In addition, since the heat storage material is contained in the heat storage material container 10A, it is heated between warm water and then between the heat storage material side and the underfloor space side through the bottom and side surfaces. Since wasteful heat transfer is suppressed, it is easy to ensure the sustainability of the air conditioning function while minimizing the amount of heat storage material.

  Furthermore, since the heat medium passes through the upper side of the heat storage material as a method in which the pipe 100 penetrates the upper end side of the heat storage material container 10A filled with the heat storage material in the horizontal direction, the amount of heat transfer in the upward direction of the floor can be reduced. Since the floor finishing material 5 can be directly heated while ensuring a large amount, the rapid start-up of the heating can be ensured. In addition, a heat reflecting sheet 52 that reflects downward radiant heat or the like is disposed on the bottom surface of each space 50 in which the heat storage material container 10A is disposed, and heat from the space 50 side toward the underfloor space side. The amount of radiation can be minimized.

  FIG. 2 shows details of the heat storage material container 10A for filling the heat storage material in the floor heating apparatus 1A described above. This heat storage material container 10A is a resin molded product having a square block shape in plan view, and a lid 14 is fitted to an open part of the upper part of the container-like storage body 11 so that it can be opened and closed. A groove 141 is formed in the lid 14 so as to be recessed from the upper surface along the path of the pipe 100 to penetrate the pipe 100 laterally on the upper end side of the heat storage material container 10A.

  In addition, on the upper surface side of the lid 14, it is a square having a size that is a quarter of the lid 14 in plan view, and has a depth and width equal to the diameter of the pipe 100 at a position that coincides with the groove 141. Thin metal plate heat sinks 16 a, 16 a, 16 a, 16 a each having a groove-shaped recess 161 formed are arranged in a state where each recess 161 is inserted into the groove 141, and the pipe 100 is inserted into each recess 161. As shown in FIG. 1, the upper surface and the upper end side of the pipe 100 are in close contact with or close to the rear surface of the floor finishing material 5 as shown in FIG. It is possible.

  Further, the heat storage material container 10A is formed in a hollow block shape, but each side surface of the storage body 11 is inclined downward at a predetermined angle, and the other storage body 11 is opened at the opening from which the lid 14 is removed. It is possible to stack in the vertical direction while inserting the bottom side. Therefore, by stacking the storage bodies 11 in a plurality of stages, the space for storing and transporting the heat storage material container 10A can be minimized.

  Furthermore, in this heat storage material container 10A, cylindrical legs 112a, 112b, 112c, and 112d are projected downward from the four corners of the bottom surface. Since an air layer is formed in the gap, heat leakage downward from the heat storage material can be further reduced.

  FIG. 3 is an exploded perspective view for explaining a detailed configuration of the heat storage material container 10A and the heat radiation plates 16a, 16a, 16a, 16a placed on the upper surface thereof. On the four side surfaces of the storage body 11 constituting the main part of the heat storage material container 10A, there are notches 111a, 111b, 111c, 111d, 111e, 111f, 111g, and 111h are formed.

  In addition, the lid 14 covering the opening of the storage body 11 has grooves 141 formed in a lattice shape with two sets of parallel lines intersecting at right angles in a square shape in a plan view. The corner portion is chamfered, and the protruding portion of the groove 141 is fitted into the notches 111a,..., 111h of the storage body 11 described above at eight locations on the outer edge side.

  On the other hand, the four heat dissipating plates 16a arranged on the upper surface of the lid 14 are square in plan view and are a quarter of the size of the lid 14, and a recess 161 formed across the central portion is a groove 141 of the lid 14. The pipe 100 (not shown) passes through the recess 161, and the upper end side of the heat storage material container 10A and the upper end side portion of the sand 300 filled in the pipe 100 are respectively penetrated laterally. Be placed. The recess 161 of the heat radiating plate 16a has a shape in which the outer surface thereof is in close contact with the inner surface of the groove 141 of the lid 14 and the portion that forms a gap, so that the floor finish is achieved in heat conduction from the pipe 100. A time difference is generated between the material 5 side and the lid 14 / heat storage material side, and after the floor surface temperature is raised in a short time, heat storage to the heat storage material is performed. In addition to the thin copper plate found in the conventional example, a relatively inexpensive galvanized thin steel plate can be used as the material of the heat radiating plate 16a.

  Further, in the present embodiment, in addition to the heat sink 16a having the concave portion 161 forming the I-shaped groove, an L-shaped concave portion 162 bent at a right angle as shown in the plan view of FIG. A heat radiating plate 16b formed to fit in the lattice-shaped groove 141 is also prepared, and can be arranged on the upper surface of the lid 14 while combining two types of heat radiating plates 16a and 16b of I shape and L shape. ing. By arranging the heat storage material container 10A with two heat dissipation plates 16a and two heat dissipation plates 16b next to the heat storage material container 10A with four heat dissipation plates 16a, as shown in FIG. The bent portion can be easily handled.

  That is, as shown in FIG. 5 which is a plan view of the air conditioner 1A of FIG. 1 with the floor finish 5 removed, a combination of the heat radiation plates 16a and 16b placed on the upper surface of the plurality of heat storage material containers 10A having the same shape. It is possible to easily cope with the pipes 100 having various arrangement shapes only by adjusting the angle, and it is possible to realize excellent floor heating with little temperature unevenness with a minimum construction effort.

  Further, if the floor finish 5 is removed as shown in FIG. 5, the maintenance of the pipe 100 can be easily performed, and the heat storage material container 10A is also placed and not fixed. Maintenance of the constituent materials can also be easily performed. The heat pump water heater combined with the floor heating apparatus 1A described above is generally one that automatically controls the temperature of water to be circulated based on temperature data detected by a room temperature sensor. What has the function of adjusting the amount of water automatically so that the temperature difference of the hot water on the side is within a predetermined range (for example, 3 ° C.) is preferable from the viewpoint of realizing floor heating with less unevenness.

  FIG. 6A shows a heat storage material container 10B as a modification of the heat storage material container 10A of FIG. 2, and FIG. 6B shows the floor finishing material 5 in a state where the heat storage material container 10B is filled with sand 300. The longitudinal cross-sectional view at the time of arrange | positioning in the lower space 50 is shown. Although this application example simplifies the combination of the heat storage material container 10A and the radiator plates 16a and 16b, the storage body 12 of the heat storage material container 10B is substantially the same as the storage body 11 described above. The leg is changed from a hard cylindrical one to a hemispherical leg 122a, 122b, 122c, 122d that can be elastically deformed by an elastic body such as rubber.

  Further, instead of the lid 14 having the concave portion 141 recessed from the upper surface, the lid 15 provided with notches 151a,..., 151h on the peripheral wall so that the pipe 100 passes under the flat upper surface is provided on the storage body 12. It is configured to be fitted in a state where the opening can be opened and closed, and is characterized in that a heat reflecting sheet 55 is provided so as to be in close contact with the bottom surface and side surface of the storage body 12.

  As shown in the developed view of FIG. 7, the heat reflecting sheet 55 is formed with slits 551,..., 558 for passing the pipe 100 on the upper end side of the portion forming the side surface, as shown in FIG. As shown in Fig. 2, the sand 300 as a heat storage material is filled, and the portion through which the pipe 100 passes is the portion of the slits 551,. It is difficult to leak outside.

  Therefore, as shown in FIG. 6B, the heat reflecting sheet 52 arranged on the upper surface of the structural plywood 6 as shown in FIG. 1 can be omitted, and the heat reflecting sheet 55 and the sand 300 are placed on the storage body 12. In the filled state, it can be arranged as it is without adjusting the direction. After that, the construction is completed only by placing the pipe 100 and covering the lid 15, thereby greatly reducing the labor and cost of construction. It has become possible.

  Further, due to the presence of the elastically deforming legs 122a, 122b, 122c, 122d, the upper surface of the heat storage material container 10B is placed on the floor even if the depth accuracy of the space 50 formed below the floor finish 5 is not high. It is possible to easily adhere to or close to the back surface of the finishing material 5. In addition, as the heat reflection sheet 55, it is preferable from the viewpoint of heat retention and durability that the foam resin sheet is sandwiched between metal thin films such as aluminum and the surface is coated with a corrosion-resistant coating.

  Further, it is preferable that the distance between the upper surface of the lid 15 and the rear surface of the floor finishing material 5 is less than 6 mm in the state where the heat storage material container 10B is disposed from the viewpoint of efficiency of heating by radiant heat. In addition, if a thin plate made of metal oxide or the like with high thermal conductivity and emissivity is used as the material of the lid 15, the heat-up start-up performance will be excellent, and heat conduction will be slow-acting and resin molding with low emissivity If goods etc. are used, it will become the thing excellent in the sustained performance of the heating after the distribution of warm water stops.

  In addition, in embodiment mentioned above, although the case where sand was used as a thermal storage material was demonstrated, since the construction method is a dry type, relatively cheap sea sand can also be used. In addition, the heat storage material used in the present invention is not limited to this, and for example, gravel, a mix of sand and gravel, lava crushed into gravel, a heat storage gel or the like can be used, and the heat storage is high. By using a thing, it becomes the thing which was further excellent in the sustainability of an air-conditioning function.

  In addition, the air conditioning according to the present invention can be applied not only to heating but also to cooling, even after cooling the heat storage material while cooling the floor by passing cold water having a temperature lower than room temperature through the pipe, and stopping the circulation of the cold water. Floor cooling can be continued by the temperature difference from the heat storage material.

  As described above, in an air conditioner that performs air conditioning by circulating a heat medium through a pipe stretched around the floor, the present invention can maintain the air conditioning function after the suspension of the heat medium and speed up the start of the air conditioning function. It can be realized at a high level at a low cost.

  1A air conditioner, 5 floor finishing material, 7 joist, 10A, 10B heat storage material container, 11, 12 housing, 14, 15 lid, 16a, 16b heat sink, 50 space, 52, 55 heat reflecting sheet, 100 pipe, 112a 112b, 112c, 112d, 122a, 122b, 122c, 122d Leg, 141 groove, 161, 162 recess, 300 sand

Claims (7)

  Arranged so that at least a part of the pipe is buried in the pipe in which the heat medium conditioned and delivered by the heat medium temperature adjusting means flows and circulates, and in the lower space of the floor finishing material around which the pipe is stretched And adjusting the room temperature through the floor while circulating the heat medium adjusted to a temperature higher or lower than room temperature, and the heat storage even after the circulation of the heat medium is stopped. In the regenerative heat medium circulation type air conditioner that maintains air conditioning by the temperature difference between the material and room temperature, the heat storage material is filled in a plurality of heat storage material containers whose upper surfaces can be opened and closed, and the pipe is the heat storage material. A heat storage type heat medium circulation type air conditioner characterized in that the upper end side of the material container is respectively disposed penetrating laterally.   On the upper surface side of the heat storage material container, there is disposed a thin metal heat radiating plate in which a groove-like recess having a depth and width equivalent to the diameter of the pipe is formed along the path through which the pipe passes. 2. The heat storage type heat medium according to claim 1, wherein the upper surface of the heat radiating plate and the upper end side of the pipe are in close contact with or close to the rear surface of the floor finish while the pipe is accommodated in the recess. Circulating air conditioner.   The heat reflection sheet is disposed at least on the bottom or bottom side of the heat storage material container, and reduces the amount of heat transfer between the heat storage material side and the underfloor space side. The heat storage type heat medium circulation type air conditioner described in 1 or 2.   A leg is protruded downward at a predetermined position on the bottom surface of the heat storage material container so that the bottom surface is lifted, and an air layer is formed between the bottom surface and an arrangement surface thereof. The regenerative heat medium circulation type air conditioner according to claim 1, 2, or 3.   The heat storage type heat medium circulation type air conditioner according to claim 1, 2, 3, or 4, wherein the heat storage material is mainly composed of sand.   A heat storage material container used by filling the heat storage material in the heat storage type heat medium circulation type air conditioner according to claim 1, 2, 3, 4, or 5, wherein the upper surface side is configured by a lid that can be opened and closed. The heat storage material container is characterized in that the pipe has a shape penetrating sideways at a height substantially matching the upper surface of the lid. The side surfaces are inclined downward at a predetermined angle, and can be stacked vertically while inserting the bottom side of the other heat storage material container into the opening from which the lid is removed. The heat storage material container described in 6.

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