JP2005195223A - Room air conditioning system utilizing heat in underfloor space - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a room air conditioning system for efficiently transmitting heat or cold existing in an underfloor space to the side of a living room while reducing whole temperature irregularity to achieve a smaller temperature difference among rooms. <P>SOLUTION: Air-conditioning or heating/cooling equipment 5 is used for heating/cooling the underfloor space 1. Cold/heat input portions 22 of heat pipes 21, 21 face the underfloor space 1 and cold/heat releasing portions 23 of the heat pipes 21, 21 face a living room space 8, and the heat or cold in the underfloor space 1 is used as a heat source for the cold/heat entering portions 22. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an indoor air conditioner for cooling and heating a living room using heat heated or cooled in an underfloor space.

  In recent years, an attempt has been made to heat an indoor space indirectly through a floor board by heating an underfloor space of an airtight house with a thermally insulated foundation. In this case, there is no uncomfortable draft like when heating the room directly with air conditioning equipment, and there is no air pollution in the room like when heating the room directly with the combustion system heating equipment, and a comfortable thermal environment. Can be realized. Moreover, since there is much heat loss compared with the case where the room is directly heated, there is a concern that the operation cost increases. However, by adopting the heat storage method, it is possible to effectively use inexpensive late-night power.

  However, air conditioning equipment used for heating the underfloor space is often installed under the floor near the living room where the staying time is long, so a living room or a washroom located away from the living room, or an opening that is particularly easy to cool The surroundings of the staircase could not be heated sufficiently, and there was a limit to the temperature control corresponding to the heat load of these rooms. As a result, the temperature difference between the chambers became large, and temperature unevenness was likely to occur as a whole. In addition, heat transfer through the floor board has a problem in that the heat resistance of the floor material is received, so that the transfer efficiency is low, and it takes time to warm the living room.

  In view of such a problem, the development of a heat transfer from the underfloor space to the living room side is required in addition to the heat transfer through the floor plate as described above. Therefore, as a method of transmitting the heat of the underfloor space to the living room side without going through the floor board, for example, as disclosed in Patent Document 1, it was heated under the floor through a duct provided so as to penetrate the floor board. It is possible to introduce air into the room.

Japanese Utility Model Publication No. 62-9017

  However, in the configuration of the above-mentioned Patent Document 1, not only the heat of the underfloor space but also the warmed air itself is introduced into the room, which causes a draft in the room. This gives the residents the same discomfort as when directly heating the room.

  Therefore, the present invention eliminates the above-mentioned problems and can efficiently transmit the heat or cold of the underfloor space to the room side without exchanging air between the underfloor space and the room, It aims at providing the indoor air conditioner which can reduce the whole temperature nonuniformity so that the temperature difference of this may become small.

  In order to solve the above problems, the indoor air conditioner using the heat of the underfloor space in the present invention includes an air conditioner or a heating / cooling device that warms or cools the underfloor space, and the cooling / heating portion side of the heat pipe is provided. In addition to facing the underfloor space, the cooling / heating part side of the heat pipe is also faced to the living room space, and the heat or cold of the underfloor space is used as the heat source of the cooling / heating part. And

  In particular, the present invention relates to an indoor air conditioner that warms or cools a living room space by utilizing the fact that the heat or cold of the underfloor space is transmitted to the living room space through a floor that partitions the living room space and the underfloor space. Further, it is also utilized that the heat or cold of the underfloor space is transmitted to the living room space through the heat pipe.

  Further, the underfloor space is warmed or cooled by hot air or cold air sent from the indoor unit of the air conditioner installed in the underfloor space.

  Furthermore, hot or cold heat is stored in either one or both of the soil concrete and the duct provided in the underfloor space.

  The heat pipe is installed so as to penetrate the floor. Specifically, the heat pipe is detachably attached to the floor, or the cooling / heating portion side of the heat pipe can be moved up and down with respect to the floor. Therefore, it can be stored on the floor side when not in use.

  In this invention, since the heat pipe is used for heat transfer from the underfloor space to the living room, the heat or cold of the underfloor space is transferred to the living room without passing through the floor or exchanging air between the underfloor space and the living room. The heat can be transmitted directly to the side, and efficient heat transfer with less heat loss can be realized.

  Therefore, in an indoor air conditioner that utilizes the fact that the heat or cold of the underfloor space is transmitted to the living room space through the floor, the heat transfer from the underfloor space to the living room is assisted by using heat transfer by the heat pipe as an auxiliary. It is possible to increase the efficiency and contribute to shortening the time until the living room is warmed or cooled.

  Furthermore, since the heat pipe does not require power for heat transfer, heat transfer can be promoted without worrying about running costs, and maintenance is not particularly required, so that the heat pipe is easy to use.

  In addition, if heat pipes are installed in living rooms, bathrooms, toilets, washrooms, entrances, corridor corners, etc. away from the living room, it is possible to actively cool and heat even in places where there is little staying time without being aware of running costs. This makes it possible to reduce the temperature difference between the chambers and reduce the temperature unevenness as a whole. Accordingly, it is possible to reduce a heat shock that a resident receives due to a rapid temperature change. Furthermore, by installing heat pipes around the openings and staircases in the winter, it is possible to eliminate the cold draft that causes the air cooled by the windows to cool down the feet and reduce indoor temperature unevenness. Therefore, indoor comfort can be improved.

  Since an air conditioner is used for heating or cooling the underfloor space, the equipment cost can be reduced by using an inexpensive heat pump. In addition, since the indoor unit of the air conditioner is installed in the underfloor space, it is possible to heat and cool the air while circulating the air in the underfloor space, thereby improving the cooling and heating efficiency of the underfloor space and reducing the running cost.

  Furthermore, by storing the heat or cold of the underfloor space in the soil concrete or duct, it is possible to effectively use inexpensive late-night power and contribute to further reduction in running cost.

  In addition, the heat pipe is installed so as to penetrate the floor partitioning the space under the floor and the room, and it is excellent in workability because it is not necessary to provide complicated piping.

  In addition, the heat pipe can be attached to and detached from the floor and removed when not in use, or the heat pipe is allowed to cool and heat up and down so that it can be moved up and down with respect to the floor. If stored, the heat pipe does not get in the way, so that the space in the room space can be used effectively.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In FIG. 1, (1) shows, for example, the under-floor space of a house. The underfloor space (1) is surrounded by the outer peripheral foundation (10). In the underfloor space (1), a heat insulating material (11) is provided along the outer peripheral foundation (10) to suppress heat radiation from the underfloor space (1) to the outside. The heat insulating material (11) is provided in a substantially L-shaped cross section so as to straddle the rising inner surface of the outer peripheral foundation (10) and the outer peripheral edge of the soil concrete (2).

  The soil concrete (2) is laid on the ground (12) with a substantially constant thickness, and a heat insulating material (3) is disposed on the back surface thereof. That is, the heat insulating material (3) is interposed between the soil concrete (2) and the ground (12), and heat radiation from the soil concrete (2) to the ground (12) is restricted.

  Moreover, in FIG. 1, (5) is an air conditioner which warms or cools the underfloor space (1), and this air conditioner (5) is provided with the indoor unit (6) and the outdoor unit (7). Yes. The indoor unit (6) is installed in the underfloor space (1), and the outdoor unit (7) is installed outdoors. The indoor unit (6) and the outdoor unit (7) are connected to each other via a refrigerant pipe (9) penetrating the outer periphery foundation (10) surrounding the underfloor space (1).

  As shown in Fig. 2, the floor (15) that divides the living room space (8) from the underfloor space (1) has a floor slab (16) attached to the upper surface of the floor slab (16) made of ALC or other concrete board. Is built. The floor slab (16) is provided with a through hole (18) penetrating up and down, and the floor board material (17) is also located at a position corresponding to the through hole (18) of the floor slab (16) vertically. A penetrating through hole (19) is formed. The through hole (19) of the floor board material (17) is formed slightly larger than the through hole (18) of the floor slab (16).

  The heat pipes (21), (21),... Are installed so as to penetrate the floor (15). Specifically, as shown in FIG. 3, a plurality of heat pipes (21), (21)... Close the through holes (18), (19) of the floor slab (16) and the floor board material (17) from above. The cover member (30) is attached in advance so as to penetrate vertically. The heat pipes (21), (21), are attached so as to be aligned on the same straight line when viewed from above.

  The cover material (30) with the heat pipes (21), (21) attached thereto is fitted into the through hole (19) of the floor board material (17), and the edge of the cover material (30) is The heat pipes (21), (21) are installed on the floor (15) as shown in FIG. 4 by being supported by the peripheral portion of the through hole (18) on the upper surface of the floor slab (16). In this installed state, the heat pipes (21), (21), ... are in a state of penetrating through the through holes (18), (19) of the floor slab (16) and the floor board material (17), respectively.

  In addition, between each heat pipe (21) and the cover material (30), for example, a rubber cushioning material (31) having airtightness is provided. The cover material (30) has a shape corresponding to the through hole (19) of the floor board material (17), and can be fitted into the through hole (19) with almost no gap. Yes. Furthermore, the surface of the cover (30) has the same appearance as the surface of the floor board (17) so that the design of the surface of the floor (15) is not impaired.

  These heat pipes (21) (21) are detachably attached to the floor (15). That is, when the living room space (8) is not air-conditioned, if the cover material (30) to which the heat pipes (21), (21), etc. are attached is removed, the heat pipes (21), (21), will become an obstacle. Therefore, the space in the living room space (8) can be effectively used. In that case, as shown in FIG. 5, if another cover material (30) is fitted in the through hole (19) of the floor board material (17), the floor slab (16) and the floor board material (17 ) Through-holes (18) and (19) can be closed.

  As the air conditioner (5), an inexpensive household general-purpose heat pump generally called “air conditioner” is used. In this air conditioner (5), the refrigerant compressed by the compressor is circulated between the indoor unit (6) and the outdoor unit (7), and the refrigerant and air in the underfloor space (1) are circulated on the indoor unit (6) side. Heat and cold air are created by exchanging heat with each other. Then, warm air or cold air is sent out through the duct (4) by a fan (not shown) provided in the indoor unit (6) so that the underfloor space (1) is warmed or cooled.

  In addition, since basic heat insulation is given to the underfloor space (1), the cooling / heating efficiency of the underfloor space (1) is increased, and the operation cost can be reduced. As the air conditioner (5), a water-cooled heat pump or a carbon dioxide (CO2) heat pump with higher thermal efficiency may be used. Furthermore, instead of the air conditioner (5), other heating equipment or cooling equipment may be installed.

  Heat or cold of the underfloor space (1) heated or cooled by the air conditioner (5) is transferred to the living room space (8) via the floor (15) separating the living room space (8) and the underfloor space (1). ). The indoor air conditioner uses heat transfer through the heat pipes (21), (21), in addition to using heat transfer through the floor (15). is there.

  The heat pipe (21) quickly moves the heat applied to the heat input section (22) on one end side or the heat applied to the cold input section to the heat radiating section (23) or cool discharge section on the other end side. It becomes a medium to be made. The structure of the heat pipe (21) is hermetically sealed so that the inside becomes a vacuum, and a small amount of water or other hydraulic fluid is sealed in the inside.

  As shown in FIG. 2, in this embodiment, in order to use the heat pipe (21) for heating the living room space (8), the heat input part (22) side of the heat pipe (21) is placed under the floor space (1). In the same way, let the heat pipe (21) side of the heat radiation part (23) face the living room space (8), and use the heat of the underfloor space (1) as the heat source for the heat input part (22). ing.

  In addition, since the warm air in the underfloor space (1) tends to gather in the upper part near the floor (15), the heat pipe (21) does not have a very low heat input part (22) at the lower end. It is desirable to install as follows. Also, in summer when heating is not necessary, the temperature between the underfloor space (1) and the living room space (8) is usually almost the same even if the heat pipes (21) and (21) are left without being removed. Since there is no difference, there is no problem that the living room space (8) is heated. Furthermore, when cooling the living room space (8), the cooling pipe side of the heat pipe (21) is allowed to face the underfloor space (1), and the cooling room side of the heat pipe (21) is also set to the living room space. In front of (8), the cold heat in the underfloor space (1) may be used as the heat source for the cooling section.

  Next, the case where the living room space (8) is heated using the indoor air conditioner having the above-described configuration will be specifically described. First, when the air conditioner (5) is operated to start the heating operation, the air in the underfloor space (1) is taken into the indoor unit (6) and heated to become warm air, and the warm air causes the floor (15) to The room space (8) is heated through the heated floor (15).

  On the other hand, for the heat pipes (21), (21), the heat input part (22) of the heat pipe (21) is heated by the warm air sent out from the indoor unit (6) in the underfloor space (1). In the heat input section (22) thus heated, the working fluid enclosed in the heat pipe (21) absorbs the latent heat of vaporization and evaporates, and the vapor of the working fluid is transferred to the heat radiating section (23) side. Moving. Then, the vapor of the working fluid is cooled and condensed in the heat radiating section (23), and the latent heat of evaporation is released to the outside, so that the room space (8) is warmed.

  The working fluid condensed in the heat radiating section (23) is returned to the heat input section (22) and is heated again by the warm air in the underfloor space (1). Therefore, as long as the heat input section (22) is continuously heated, the heat pipe (21) repeats a series of phase changes such as evaporation, vapor movement, condensation, and condensate movement as long as the heat input section (22) is heated. Heat can be continuously transmitted from the section (22) side to the heat radiating section (23) side, and the room space (8) can be kept warm.

  When the heat pipe (21) is used for cooling, the working fluid in the pipe evaporates by absorbing the latent heat of evaporation from the living room space (8) on the cooler side and condenses on the cooler side to condense under the floor. The latent heat of vaporization is released to (1), and the phase changes in the opposite direction to the case of heating. In this case as well, as long as the cooling section of the heat pipe (21) continues to be cooled by the cold air in the underfloor space (1), the working fluid in the pipe repeats the phase change, and from the cooling section side to the cooling section side. It is possible to continuously transmit cold energy to the room, and to continue cooling the living room space (8).

  For example, when the temperature of the underfloor space (1) is raised to approximately 40 ° C. by the heating as described above, the temperature of the heat radiating portion (23) of the heat pipe (21) is increased to approximately 35 to 40 ° C. Combined with the effect of heat transfer through the floor (15), the room space (8) can be warmed to about 20 ° C.

  As shown in FIG. 6, the heat pipes (21), (21),... Are particularly effective if they are installed around the toilet (50) where the staying time is short, or around the opening (51) where cold air easily enters. In other words, since the heat pipe (21) does not require power for heat transfer, it can be actively warmed without being aware of running costs even in places where the stay time is short, such as the toilet (50). The temperature difference between the chambers can be reduced to reduce the temperature unevenness as a whole. On the other hand, if the heat pipes (21), (21) ... are installed around the opening (51), the cold draft (52), in which the air cooled at the window becomes an air flow that cools the feet, is eliminated, and the indoor Since the temperature unevenness can be reduced, indoor comfort can be improved.

  In the above, the case where the living room space (8) is heated using the indoor air conditioner having the above-described configuration has been described, but by operating the air conditioner (5) so as to send cold air from the indoor unit (6), It is also possible to cool the living room space (8).

  7 to 9 show the installed state of the heat pipes (21), (21),... According to another embodiment of the present invention. In this embodiment, the heat radiation part (23) side of the heat pipe (21) can be moved up and down with respect to the floor (15), so that it can be stored on the floor (15) side when not in use. . In this case, a storage recess (35) for storing the heat pipes (21), (21), ... is formed on the top surface of the floor slab (16). A plurality of vertical through holes (34), (34),... Are provided at the bottom of the storage recess (35).

  A heat pipe (21) is attached to each through hole (34) so as to be slidable in the vertical direction. For example, a rubber cushioning material (36) having airtightness is attached to the inner peripheral surface of the through hole (34) by, for example, adhesion. That is, in the mounted state of the heat pipe (21), the buffer material (36) is interposed between the heat pipe (21) and the through hole (34).

  Further, in this embodiment, the through hole (19) of the floor board material (17) is provided at a position corresponding to the storage recess (35) of the floor slab (16), and is slightly more than the storage recess (35). Largely formed. When the room space (8) is not cooled or heated, as shown in FIG. 9, the heat pipes (21), (21), are slid downward so that the upper ends thereof are accommodated in the storage recesses (35), The heat pipes (21), (21), etc. can be easily accommodated by fitting the same cover material (30) as in the above embodiment into the through hole (19) of the floor board material (17).

  However, regarding the installation of the heat pipe (21), various configurations other than the embodiment described above are conceivable, and the configuration is not particularly limited. It is also conceivable to install a long heat pipe and use it for air conditioning in the living room space on the second floor. In that case, it is desirable to heat-treat the middle portion of the heat pipe in order to prevent heat radiation on the way below the second floor room space.

  FIG. 10 shows that in the underfloor space (1), a duct (40) for introducing hot air or cold air using the air conditioner (5) as a heat source is arranged along the surface of the soil concrete (2). A structure in which hot or cold heat is stored in the soil concrete (2) and the duct (40) is shown. In this heat storage structure, hot air or cold air from the indoor unit (6) is introduced into the duct (40) via the rectifying duct (4).

  The duct (40) is installed so as to straddle between, for example, a pair of legs (41) and (41) arranged parallel to each other on the surface of the soil concrete (2) and the upper surfaces of these legs (41) and (41). The upper surface portion (42) made of the heat storage material is provided, and the lower surface facing the surface of the soil concrete (2) is open. When hot air or cold air passes through the air passage (43) in the duct (40), the hot or cold heat is stored in the duct (40) and the soil concrete (2).

  With this heat storage structure, even if the operation of the air conditioner (5) is stopped, the heat or cold stored in the duct (40) and the soil concrete (2) is gradually dissipated to warm the underfloor space (1). Or the living room space (8) can be cooled and heated for a certain period of time. Therefore, for example, by using inexpensive late-night power from around midnight at night to around 7:00 the next morning, the air conditioner (5) is operated to store heat. For example, the time from around 7:00 to around 15:00 is air conditioning. The running cost can be reduced by stopping the machine (5). In FIG. 10, (44) indicates a heat insulating material covering the surface of the upper surface (42) of the duct (40), and (45) indicates an exhaust port of the duct (40).

  The present invention is not limited to the above embodiment, and it is needless to say that many modifications and changes can be made to the above embodiment within the scope of the present invention.

  For example, in order to expand the heat radiation area when heat is radiated from the heat radiation part (23) of the heat pipe (21) to the living room space (8), for example, metal heat radiation is provided on the heat radiation part (23) side of the heat pipe (21). You may make it attach a board. In this case, a pair of heat radiating plates having grooves for inserting a plurality of heat pipes (21), (21), and so on can be attached so as to sandwich the heat pipes (21), (21). Conceivable.

  On the other hand, in order to expand the heat input area when heat is input from the underfloor space (1) to the heat input part (22) of the heat pipe (21), the heat input part (22) side of each heat pipe (21) For example, one or more fins made of metal may be provided.

It is sectional drawing which shows the indoor air conditioner which concerns on one Embodiment of this invention. It is an expanded sectional view which shows the attachment state of a heat pipe. It is the perspective view similarly. It is the perspective view similarly. It is a perspective view which shows the cover material installed when a heat pipe is not used. It is a schematic diagram which shows the state which installed the heat pipe around the toilet and the opening part. It is an expanded sectional view which shows the attachment state of the heat pipe which can be accommodated on the floor side. It is the perspective view similarly. It is a perspective view showing the state where the heat pipe was stored similarly. It is sectional drawing which shows the state which provided the thermal storage structure in underfloor space.

Explanation of symbols

(1) Underfloor space
(2) Dust concrete
(5) Air conditioner
(6) Indoor unit
(8) Living room space
(15) Floor
(21) Heat pipe
(22) Heat input section
(23) Heat sink

Claims (7)

Air conditioning or heating / cooling equipment is provided to warm or cool the underfloor space, and the heat pipe cooling / heating section faces the underfloor space and the heat pipe cooling / heating section faces the living room space. The indoor air conditioner using the heat of the underfloor space is characterized in that the heat or cold of the underfloor space is used as a heat source for the cooling / heating section. In the indoor air conditioner that warms or cools the living room space by utilizing the fact that the heat or cold of the underfloor space is transmitted to the living room space through the floor that partitions the living room space and the underfloor space, The indoor air conditioner using the heat of the underfloor space according to claim 1, wherein the cold heat is also transmitted to the living room space through the heat pipe. The indoor air conditioner using the heat of the underfloor space according to claim 1 or 2, wherein the underfloor space is heated or cooled by warm air or cold air sent from an indoor unit of an air conditioner installed in the underfloor space. The indoor air conditioner using the heat of the underfloor space according to any one of claims 1 to 3, wherein heat or cold is stored in one or both of the soil concrete and the duct provided in the underfloor space. . The indoor air conditioner using heat of the underfloor space according to any one of claims 1 to 4, wherein the heat pipe is installed so as to penetrate the floor. The indoor air conditioner using the heat of the underfloor space according to claim 5, wherein the heat pipe is detachably attached to the floor. 6. The heat of the underfloor space according to claim 5, wherein the heat pipe is allowed to be stowed up and down with respect to the floor so that the heat pipe can be stored on the floor side when not in use. Indoor air conditioner.