JP2006313041A - Radiation cooling/heating system utilizing space under floor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radiation cooling/heating system utilizing a space under floor which has a function for equalizing a temperature distribution in a living room and a floor surface, and has a low-cost and simple apparatus configuration without impairing a design property in the living room. <P>SOLUTION: A space 103 under a floor is formed under a floor 102 in a living room 101. An air conditioner 104 of a general-purpose product being an air-conditioning machine is installed in the space 103 under the floor. A controller 106 for regulating the room temperature in the living room 101 is mounted to a side wall 105 in the living room 101. A suction hole 107 and a blowout hole 108 are formed on the floor 102 in the living room 101 and a fan 109 is mounted immediately below the blowout hole 108. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

 The present invention relates to an underfloor radiant cooling and heating system in which an air conditioner is installed under a floor to cool and heat a floor surface and a living room.

 Conventionally, an underfloor heating system used for floor heating in a house or the like is provided with a duct path formed by a double floor under the floor, and temperature-controlled air blown from an air conditioner is flowed through the duct path to There is a floor radiation system that performs floor radiation air conditioning by adjusting the temperature of the floor.

 As an example of applying the system, there is a floor radiation system as shown below (see, for example, Patent Document 1). In this floor radiation system, as shown in FIG. 5, a flooring (upper floor) 502 is supported on a plurality of parallel joists 501, and a panel attached to the lower surface of the joists 501 so as to cover a plurality of joists 501. By providing the lower floor) 503, a duct path 504 is formed between the plurality of joists 501. Then, the temperature-adjusted air is supplied into the duct path 504 from an air conditioner 505 disposed on the flooring 502.

 As shown in FIG. 6, the air conditioner 505 includes an upper fan 601 that blows temperature-controlled air into the living room 506 from the upper outlet 507 and the temperature control air into the duct 504 in the room 506 or under the floor. A lower fan 603 for blowing air from the lower duct outlet 602.

 Further, in this floor radiation system, either the lower outlet 508 or the lower duct outlet 602 can be selected by the outlet selection means 604 to discharge the temperature-controlled air.

Further, the floor radiation system includes a control unit (not shown) for controlling at least one of the upper fan 601 and the lower fan 603 based on the environmental temperature in the living room, and the temperature-controlled air as shown in FIG. A diversion unit 701 is provided below the lower duct outlet 602.
Japanese Patent Laid-Open No. 10-54576

 However, the above-described floor radiation system requires a complicated system such as a heat distribution means provided on the inner surface of the duct in order to make the floor surface temperature uniform or a partial flow unit 701 that enables partial floor heating. Therefore, there are problems in terms of costs such as price and maintenance.

 Further, when installing the air conditioner 505 described above, a dedicated installation space must be provided in the living room, so there is a problem in securing the space in the living room and design.

 The present invention solves the above-described problems, has a function of making the temperature distribution of the living room and the floor surface uniform, and is a low-cost and simple device configuration and does not impair the design of the living room. The purpose is to provide a radiant cooling and heating system.

 In order to solve the above-mentioned problems, the invention of claim 1 is characterized in that a floor in a living room, an underfloor space sealed by a heat insulating material provided under the floor, a temperature provided in the underfloor space, and temperature controlled in the underfloor space. An air conditioner that discharges temperature-controlled air, a blow-out hole that is provided on the floor of the living room and discharges the temperature-controlled air discharged into the under-floor space, and is provided in the floor and discharged into the living room. A suction hole for sucking in the temperature-controlled air; a fan provided below the suction hole or the blow-out hole and for adjusting the discharge amount of the temperature-controlled air from the blow-out hole; and controlling the operation of the fan; And a control means for adjusting a discharge amount of the temperature-controlled air discharged from the blow-out hole.

 The invention according to claim 2 is characterized in that the air-conditioner is connected to the suction hole provided in a floor of a plurality of living rooms.

 According to the first aspect of the present invention, the built-in type air conditioner indoor unit, which is a general-purpose product, can be mounted under the floor by using the underfloor space as a temperature control / blower space. Since it is used as an air conveyance path, it is not necessary to form a complicated duct on the floor, and the system is not complicated, so that the cost can be reduced. Moreover, since the air conditioner is installed in the underfloor space, the designability of the room and the degree of freedom of installation of other equipment, furniture, etc. can be improved. In addition, by utilizing the underfloor space as a space for temperature-controlled air and making it possible to adjust the circulation air volume of the temperature-controlled air in the room, it is possible to improve the comfort of the air conditioner at the start-up and steady state (in the room / floor surface) It is possible to provide an underfloor radiant cooling and heating system that can achieve both uniform temperature distribution and suppression of unpleasant airflow.

 According to the invention of claim 2, air conditioning of a plurality of living rooms can be performed by one air conditioner. In addition, the built-in type air conditioner indoor unit, which is a general-purpose product, can be mounted under the floor by using the underfloor space in multiple living rooms as a temperature control and ventilation space. Since it is used as a route, it is not necessary to form a complicated duct and the system is not complicated, so the cost can be reduced.

  Hereinafter, Example 1 of the underfloor radiation cooling and heating system according to the present invention will be described with reference to the drawings.

 FIG. 1 is a schematic explanatory diagram illustrating an underfloor radiant cooling and heating system according to a first embodiment of the present invention. As shown in FIG. 1, an underfloor space 103 is provided below the floor 102 in the living room 101. The underfloor space 103 is provided between a heat insulating material (not shown) attached to foundation concrete and the floor 102. In the underfloor space 103, a general-purpose built-in air conditioner 104, which is an air conditioner, is installed. Further, a controller 106 is provided on the side wall 105 in the living room 101 as an input means for setting or adjusting the room temperature in the living room 101.

 The floor 102 in the living room 101 has a suction hole 107 that is located in the vicinity of the air conditioner 104 and sucks the air in the living room 101 to the underfloor space 103 side, and a blowout hole 108 that discharges air from the underfloor space 103 to the living room 101 side. Is provided. A fan 109 is provided immediately below the blowout hole 108. The fan 109 is controlled by a later-described control circuit 301 attached in the air conditioner 104 to discharge air in the underfloor space 103 from the blowout hole 108 to the living room 101 and adjust the amount of discharged air. It is like that.

 In addition, a duct connection box 110 is disposed in the underfloor space 103 near the position where the air conditioner 104 is disposed. The duct connection box 110 has an upper opening end connected to the suction hole 107 and also projects downward from the bottom surface of the floor 102. The duct connection box 110 and the air conditioner 104 are connected by a flexible duct 111. As a result, the degree of freedom of installation of both the air conditioner 104 and the duct connection box 110 is ensured, and the temperature-controlled air shortcut (the air sucked from the living room 101 and the air-conditioner 104 is adjusted in temperature from the air outlet 201 described later) Mixing with the blown air) is prevented.

 In addition, as shown in FIG. 2, the air conditioner 104 is provided with a blowing port 201 for blowing temperature-controlled air. In addition, the air sucked from the suction hole 107 is guided to the air conditioner 104 and the temperature is adjusted in the air conditioner 104. Then, the temperature-controlled air whose temperature has been adjusted by the air conditioner 104 is blown into the underfloor space 103 from the air blowing port 201 of the air conditioner 104. Further, the fan 109 is a line flow type fan having a long and narrow fin in a cylindrical shape, and the temperature adjustment air is blown into the living room 101 by rotating as a whole, and the blowing amount is adjusted by adjusting the rotation amount. The It should be noted that the maximum air volume of the temperature-controlled air blown by the fan 109 can be secured to the same level as the maximum air volume of the air conditioner 104.

 Further, the blowout hole 108 is provided with a louver 108 a that adjusts the discharge direction when the temperature-controlled air blown by the fan 109 is discharged into the living room 101. The resident can manually change the direction of the louver 108a to adjust the discharge direction.

 As shown in FIGS. 1 and 2, the temperature-controlled air blown from the air outlet 201 of the air conditioner 104 as indicated by the arrow A1 passes through the underfloor space 103 and passes through the outlet hole 108 in the room 101 as indicated by the arrow A2. After being blown upward by the fan 109, the air flows in the vicinity of the ceiling of the living room 101 as indicated by an arrow A3, moves toward the suction hole 107 as indicated by an arrow A4, and returns to the air conditioner 104 to be temperature-controlled. In this process, the underfloor space 103 becomes low temperature, and the temperature of the entire floor surface is slightly lower than the room temperature, so that comfort is improved.

 As shown in FIG. 3, the air conditioner 104 is provided with a control circuit (control means) 301, and the fan 109 is provided with a motor control unit (motor control circuit) 302. The controller 106 and the motor control unit 302 are connected to the control circuit 301 through signal lines (not shown). When the resident operates the air conditioner 104 by the controller 106 and sets the room temperature, a signal based on the set temperature is input from the controller 106 to the control circuit 301. Then, the control circuit 301 controls the operation of the motor control unit 302 based on the signal input from the controller 106, and controls the drive of the fan 109 by the motor control unit 302. Thereby, when the air conditioner 104 starts up, the amount of rotation of the fan 109 can be increased, and the interior of the room 101 can be brought closer to the set temperature quickly. In a steady state, the rotation amount of the fan 109 is reduced to an appropriate amount, and the airflow velocity of the air in the underfloor space 103 is reduced, so that air conditioning incorporating radiation from the floor surface can be performed.

 Although illustration is omitted, a room temperature sensor is actually provided in the living room 101, and the room temperature sensor is connected to the control circuit 301 of the air conditioner 104 via a signal line or the like (not shown). Thus, the control circuit 301 controls the air conditioner 104 and the fan 109 to be driven. With this configuration, the control circuit 301 controls the rotation amount of the fan 109 based on the set room temperature set by the resident by the controller 106 and the room temperature measured by the room temperature sensor, and always automatically controls the temperature in the room 101. be able to.

 As described above, the underfloor utilization radiant cooling and heating system according to the embodiment of the present invention is provided in the floor 102 in the living room 101, the underfloor space 103 sealed by the heat insulating material provided in the underfloor, and the underfloor space 103. And an air conditioner (air conditioner 104) for releasing temperature-controlled air whose temperature is adjusted in the underfloor space 103. Further, the underfloor utilization radiant cooling and heating system according to the embodiment of the present invention includes a blowout hole 108 provided on the floor 102 in the living room 101 and for discharging the temperature-controlled air discharged into the underfloor space 103, and A suction hole 107 that is provided in the floor 102 and sucks the temperature-controlled air discharged into the living room 101, and is provided below the suction hole 107 or the blow-out hole 108 and from the blow-out hole 108 of the temperature-controlled air. And a control means (control circuit 301) for controlling the operation of the fan 109 and adjusting the discharge amount of the temperature-controlled air discharged from the blow-out hole 108.

 According to this configuration, the built-in type air conditioner indoor unit as a general-purpose product can be mounted under the floor by using the under-floor space 103 as the temperature control / blower space, and the sufficiently high under-floor space 103 is used as the temperature-controlled air conveyance path. Because it is used, almost uniform room temperature distribution can be realized regardless of the position of the air conditioner and the direction of the temperature-controlled air, and it is not necessary to form a complicated duct on the floor and the system is not complicated, so the cost can be reduced. Can do. Moreover, since the air conditioner 104 is installed in the underfloor space 103, the designability in the living room 101 and the degree of freedom of installation of other devices, furniture, and the like can be improved. Furthermore, by using the underfloor space 103 as a space through which temperature-controlled air passes and adjusting the air volume of the fan 109 to operate the air conditioner 104, the air volume is increased at the start of cooling and heating, and the interior of the room 101 is quickly brought to a desired temperature. You can get closer. In addition, the air volume is reduced to an appropriate amount during steady state, and the temperature-controlled air is gently circulated through the living room 101 while warming or cooling the floor through the underfloor space 103, so that the floor surface temperature is lower during cooling, Comfortable cooling and heating without airflow can be realized in the living room 101 while adjusting warmer.

  Hereinafter, Example 2 of the underfloor radiation cooling and heating system according to the present invention will be described with reference to the drawings.

  FIG. 4 is a perspective view showing an underfloor radiation cooling / heating system according to a second embodiment of the present invention. As shown in FIG. 4, suction holes 401 and 401 and duct connection boxes 402 and 402 are provided in the floor plates 404 a and 405 a of the first living room 404 and the second living room 405 adjacent to each other with a partition 403 therebetween.

  Moreover, the built-in air conditioner 406 is installed between the underfloor spaces 408 and 408 of the living rooms 404 and 405. In other words, the air conditioner 406 is positioned below the partition 403 and below the floor. In addition, the duct connection boxes 402 and 402 are connected to the air conditioner 406 via flexible ducts 407 and 407. And the structure inside each room 404,405 and underfloor space 408,408, etc., such as one blowing hole (not shown) being installed in each room at a position facing the air conditioner 406, is described in the first embodiment. Same as in

  When the lengths of the flexible ducts 407 and 407 are greatly different, it is desirable to change the duct diameter of the flexible duct 407 and appropriately set the capacity of the air conditioner 406 according to the duct diameter.

  Further, in each of the living rooms 404 and 405, the temperature-controlled air blown from the air blowing port 409 of the air conditioner 406 passes through the underfloor spaces 408 and 408 similarly to the first embodiment, and upwards in the living rooms 404 and 405 from the blowout holes. The air is blown out by the fan, flows in the vicinity of the ceilings of the living rooms 404 and 405, moves toward the suction holes 401 and 401, and returns to the air conditioner 406 to be temperature-controlled. In this process, the underfloor spaces 408 and 408 become low temperature, and the temperature of the entire floor surface becomes slightly lower than the room temperature, so that comfort is improved.

 As described above, the underfloor utilization radiant cooling and heating system according to the embodiment of the present invention connects the suction holes 401 and 401 provided in the floors of the plurality of living rooms 404 and 405 to the air conditioner (air conditioner 406). It is characterized by that.

 According to this configuration, by using the underfloor space, air conditioning of the two rooms (rooms 404 and 405) partitioned by the partition 403 can be performed simultaneously. Moreover, by setting the temperature control / blow space in the respective living rooms 404 and 405 as the underfloor spaces 408 and 408, a general-purpose built-in air conditioner indoor unit can be attached under the floor. In addition, since the underfloor spaces 408 and 408 having a sufficiently high height are used as a temperature-controlled air conveyance path, a substantially uniform room temperature distribution can be realized regardless of the direction of blowing the temperature-controlled air, and a complicated duct can be realized. It is not necessary to form the floor on the floor and the system is not complicated, so that the cost can be reduced. In addition, since the built-in type air conditioner 406 is installed in the underfloor spaces 408 and 408, the design properties in the living rooms 404 and 405 and the degree of freedom of installation of other devices and furniture can be improved. Furthermore, by utilizing the underfloor spaces 408 and 408 as a space through which temperature-controlled air passes and adjusting the fan air volume to operate the built-in type air conditioner 406, the air volume is increased at the start of air conditioning and the rooms 404 and 405 are quickly moved. The inside can be brought close to the desired temperature. In addition, the air volume is reduced to an appropriate amount in the steady state, and the temperature-controlled air gently circulates in the living rooms 404 and 405 through the underfloor spaces 408 and 408 while warming or cooling the floor, and the floor surface temperature is more reduced during cooling. It is possible to realize comfortable cooling and heating without feeling of airflow in the living rooms 404 and 405 while being cold and adjusting warmer during heating.

 The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration is not limited to this embodiment, and design changes that do not depart from the gist of the present invention are not limited to this embodiment. Included in the invention.

It is a schematic explanatory drawing which shows the underfloor utilization radiation cooling and heating system concerning Example 1 of this invention. It is a perspective view which shows the apparatus structure in the basic heat insulation under floor space concerning Example 1 of this invention. It is a block diagram which shows the control means concerning Example 1 of this invention. It is a perspective view which shows the underfloor utilization radiation cooling and heating system concerning Example 2 of this invention. It is a perspective view of the floor radiation system concerning a prior art. It is sectional drawing which looked at the inside of the air conditioner of the floor radiation system concerning a prior art from the side. It is a perspective view which shows the shunt unit of the floor radiation system concerning a prior art.

Explanation of symbols

101 Living room 102 Floor 103 Underfloor space 104 Air conditioner
105 Side wall 106 Controller 107 Suction hole 108 Blowing hole 109 Fan 110 Duct connection box 111 Duct 201 Air outlet 301 Control circuit (control means)
302 Motor control unit (motor control circuit)
403 Partition 404 First room 405 Second room

Claims (2)

An underfloor space sealed by a floor in the living room and a heat insulating material provided under the floor;
An air conditioner that is provided in the underfloor space and releases temperature-controlled air whose temperature is adjusted in the underfloor space;
A blowout hole for discharging the temperature-controlled air provided on the floor in the living room and discharged into the underfloor space;
A suction hole that is provided in the floor and sucks the temperature-controlled air released into the living room;
A fan that is provided below the suction hole or the blowout hole and adjusts the discharge amount of the temperature-controlled air from the blowout hole;
And a control means for controlling the operation of the fan and for adjusting the discharge amount of the temperature-controlled air discharged from the blowout hole. The underfloor utilization radiant cooling and heating system according to claim 1, wherein the suction hole provided in a floor of a plurality of living rooms is connected to the air conditioner.

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