JP6338046B2 - Radiant panel and radiant air conditioning system - Google Patents

Description

  The present invention relates to a radiation panel and a radiation air conditioning system.

  Conventionally, various proposals have been made for the shape of the radiation panel. For example, a radiation panel has been proposed in which a plurality of flat plates are stacked and a circuit for passing a liquid such as hot water or cold water and a reinforcing circuit are formed between the flat plates (for example, Patent Document 1). In addition, air conditioning systems combining radiant air conditioning and convection air conditioning have been proposed (for example, Patent Documents 2 to 4). In addition, an air-type radiant air-conditioning system that causes air to flow out from a hole provided over the entire surface of the panel has also been proposed (for example, Patent Documents 2, 5, and 6).

JP-A-8-14595 JP-A-8-178372 JP 2006-214696 A Japanese Patent Laid-Open No. 2006-214697 JP 2012-7852 A JP 2012-93043 A

  Conventionally, in radiant air conditioning, in order to prevent dew condensation on the radiant panel, the surface temperature of the radiant panel is controlled so as not to fall below the dew point temperature of the room air. Therefore, an object of the present invention is to make it possible to suppress dew condensation even in a radiant panel or a radiant air conditioning system, even if the surface temperature is lowered below the dew point temperature of room air.

  A radiant panel used for radiant air conditioning according to one aspect of the present invention is provided between a front surface and a back surface of a radiant panel, passes through a flow path for passing a cooling medium, the front surface and the back surface, and passes room air. A ventilation hole serving as a vent for conditioned air that is circulated and adjusted in temperature and humidity.

  If it does in this way, at the time of air_conditioning | cooling, for example, while cooling a radiation panel with the cooling medium which passes a flow path, conditioned air can be blown out from the vent hole of a radiation panel. Therefore, dew condensation can be suppressed even if the surface temperature of the radiating panel is lowered to about the dew point temperature of the conditioned air blown out from the vent hole around the radiating panel. That is, dew condensation can be suppressed even if the surface temperature is lowered below the dew point temperature of room air.

  The vent hole may be provided by pressing the bottom surface of the recess formed by drawing at least one of the front surface and the back surface with the other surface and drilling at least a part of the region to be pressed. . If it does in this way, the radiation panel which has a channel inside can be manufactured easily, controlling cost.

  Further, the flow path may be provided so that water as a cooling medium passes directly between the front surface and the back surface. In this way, the radiant panel can efficiently exchange heat between the cooling medium and the air conditioning target.

  Moreover, you may make it provide a part of vent hole in the shape of a slit along the periphery of a radiation panel. If it does in this way, it can control that the room air for air conditioning is attracted to the surface or side of a radiation panel by the air which blows off from a vent.

  Furthermore, the slit-shaped air holes may be cut and raised so that the conditioned air is blown out toward the outer periphery of the radiating panel. Even with such a configuration, it is possible to suppress the air to be air-conditioned from being attracted to the surface or the side surface of the radiation panel by the air blown out from the vent hole.

  In addition, the radiant panel is substantially rectangular, and a supply header and a return header may be provided on the opposite side of the radiant panel in the flow path so that the cooling medium flows through the flow path without being biased. In this way, it is possible to suppress the occurrence of bias in the temperature of the radiating panel.

  A radiant air-conditioning system according to another aspect of the present invention is a radiant panel used for radiant air-conditioning, provided between a front surface and a back surface of the radiant panel, a flow path for passing a cooling medium, a front surface and a back surface Radiant convection that circulates indoor air, circulates indoor air, and has a vent hole that serves as a vent for conditioned air whose temperature and humidity are adjusted, and takes in indoor air and sends conditioned air to the vent hole of the radiant panel A combination air conditioner or fan coil is provided.

  According to such a radiant air conditioning system, for example, at the time of cooling, the radiant panel can be cooled by the cooling medium passing through the flow path, and conditioned air can be blown out from the vent holes of the radiant panel. Therefore, dew condensation can be suppressed even if the surface temperature of the radiating panel is lowered to about the dew point temperature of the conditioned air blown out from the vent hole around the radiating panel. That is, dew condensation can be suppressed even if the surface temperature is lowered below the dew point temperature of room air.

  The radiant air conditioning system may further include a control unit that controls the temperature and humidity so that the dew point temperature of the conditioned air blown from the vent hole is lower than the surface temperature of the radiant panel. If it does in this way, the surface temperature of a radiation panel can be controlled within the range which can suppress dew condensation.

  Further, the control unit is configured such that when the temperature difference between the indoor dew point temperature and the surface temperature of the radiant panel is greater than or equal to a predetermined threshold at the start of operation or cooling, or between the room temperature and the surface temperature of the radiant panel during heating. When the temperature difference is equal to or greater than a predetermined threshold value, control may be performed so that the amount of conditioned air blown from the vent hole is increased compared to the normal time. In this way, at the start of operation or when the air conditioning load is equal to or greater than a predetermined threshold, the rise time can be shortened (the temperature of the air-conditioning target space quickly reaches the predetermined temperature) and condensation is prevented. And the temperature difference between the air-conditioning target spaces can be reduced.

  In addition, the content of the means for solving the said subject can be combined as much as possible within the range which does not deviate from the subject and technical idea of this invention.

  According to the present invention, in the radiant panel or the radiant air-conditioning system, dew condensation can be suppressed even if the surface temperature is lowered below the dew point temperature of room air.

It is a schematic structure figure of a radiation air-conditioning system concerning a 1st embodiment. It is a perspective view which shows an example of a radiation panel. It is sectional drawing which shows an example of a radiation panel. It is a figure for demonstrating an example of the manufacturing method of a radiation panel. It is a figure for demonstrating the manufacturing method of the radiation panel which concerns on another example. It is a figure for demonstrating the effect | action of a radiation | air-conditioning system. It is a processing flow figure showing an example of control at the time of cooling operation. It is a processing flow figure showing an example of control at the time of cooling operation. It is a processing flow figure showing an example of control at the time of heating operation. It is a processing flow figure showing an example of control at the time of heating operation. It is a schematic block diagram of the radiation air conditioning system which concerns on 2nd Embodiment. It is a schematic block diagram of the radiation air conditioning system which concerns on 3rd Embodiment. It is a processing flow figure showing an example of control at the time of cooling operation. It is a processing flow figure showing an example of control at the time of heating operation. It is a schematic block diagram of the radiation air conditioning system which concerns on 4th Embodiment. It is a processing flow figure showing an example of control at the time of cooling operation. It is a processing flow figure showing an example of control at the time of heating operation. It is a top view which shows the modification of a radiation panel. It is sectional drawing which shows the modification of a radiation panel. It is a perspective view which shows the modification of a radiation panel. It is sectional drawing which shows the modification of a radiation panel. It is a disassembled perspective view which shows the modification of a radiation panel.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a radiation air conditioning system according to the present invention will be described with reference to the drawings. Note that the radiation air conditioning system shown in this embodiment is an example, and the present invention is not limited to the configuration of the embodiment.

<First Embodiment>
FIG. 1 is a diagram illustrating a schematic configuration of a radiant air conditioning system 1 according to the first embodiment. The radiant air conditioning system 1 includes a combined radiant convection air conditioner 11, an intake passage 12, a blower passage 13, a water supply passage 14, and a radiant panel 15. The room 2 is a space to be air-conditioned. In this embodiment, the radiation panel 15 and the air inlet 21 that is the end of the air intake passage 12 are provided on the ceiling of the room 2. The room 2 includes a controller 22 for setting a target temperature (set temperature) for air conditioning, and a room temperature sensor 23 for measuring the temperature in the room 2. In FIG. 1, broken arrows indicate the flow of air.

  The intake passage 12 is connected to the air inlet 21 of the chamber 2 and the radiant convection combined air conditioner 11, and takes air in the chamber 2 into the radiant convective combined air conditioner 11. The combined radiant convection air conditioner 11 has an intake air temperature sensor 121 that measures the temperature of the intake air taken from the intake passage 12 and an intake air humidity sensor 122 that measures the humidity of the intake air. The intake air temperature sensor 121 and the intake air humidity sensor 122 need only exist on the intake path, and the intake path 12 may include the intake air temperature sensor 121 and the intake air humidity sensor 122.

The radiant convection combined air conditioner 11 is an air conditioner capable of simultaneous operation of radiant air conditioning and convective air conditioning. The radiant convection combined air conditioner 11 has a blower (fan) 111, which processes air (heated or cooled and humidified or dehumidified) with an air heat exchanger 112 for the air taken from the intake passage 12. Send to. The radiant convection combined air conditioning 11 has a blown air temperature sensor 131 that measures the temperature of the blown air and a blown air humidity sensor 132 that measures the humidity of the blown air. Note that the blown air temperature sensor 131 and the blown air humidity sensor 132 need only exist on the blower path, and the blower path 13 may include the blown air temperature sensor 131 and the blown air humidity sensor 132. The radiant convection combined air conditioner 11 includes a radiant water heat exchanger 113, and the radiant water heat exchanger 113 cools a cooling medium such as water circulating between the radiant convection combined air conditioner 11 and the radiant panel 15. Or warm up. The convection combined air conditioner 11 includes a pump 14.
1 is used to send the cooling medium to the water supply channel 14. The water supply path 14 includes an outflow water temperature sensor 142 that measures the temperature of the cooling medium sent by the pump 141. The outflow water temperature sensor 142 may be present on the water supply path, and the combined radiant convection air conditioner 11 may include the outflow water temperature sensor 142. The air heat exchanger 112 and the radiant water heat exchanger 113 are connected to a compressor 115, an expansion valve (not shown), a heat exchanger with an external heat source, and the like to form a refrigeration cycle 116. The air heat exchanger 112 and the radiant water heat exchanger 113 are connected in series so as to be an air heat exchanger on the upstream side and a radiant water heat exchanger on the downstream side, and heat is supplied to each heat exchanger.

  Further, the combined radiant convection air conditioner 11 has a control unit 114. The control unit 114 includes, for example, a microcontroller, and controls the operation of the radiant air conditioning system 1. Moreover, the control part 114 is connected with each sensor, and acquires the data which each sensor measured continuously. Moreover, the control part 114 is connected also to the air blower 111 and the pump 141, and controls the output (air volume) of the air blower 111 and the output (water supply amount) of the pump 141. In addition, the control unit 114 is connected to the controller 22 in the room 2 by wire or wirelessly, and receives input such as start or stop or a target temperature. And the control part 114 changes the operating frequency of the compressor 115 using target temperature etc. and the temperature and humidity acquired via each sensor, and controls the output of a heat exchanger.

  The air passage 13 and the water supply passage 14 are each connected to the radiation panel 15. The radiant panel 15 is a panel used for radiant air conditioning, and has a flow path 151 through which cold water or hot water as a cooling medium passes between the front and back surfaces of the radiant panel 15 (inside the panel). The radiating panel 15 also has an air vent hole 152 that penetrates the front surface and the back surface. The cooling medium flow channel 151 and the air vent 152 are separated from each other. The radiation panel 15 is provided in the chamber 2 by, for example, being embedded in the ceiling or suspended from the ceiling, and performs heat exchange with the air in the chamber 2 and radiation. The conditioned air sent to the radiating panel 15 via the air passage 13 performs radiant air conditioning by the radiating panel 15 by an air method, and also performs convection air conditioning at a low flow rate via the vent hole 152. There is also.

<Radiation panel>
FIG. 2 is a perspective view schematically showing an example of the radiation panel 15. FIG. 3 is a cross-sectional view schematically showing an example of the radiation panel 15. The radiating panel 15 is a panel in which two metal plates are stacked so that a cavity is formed inside. Inside the radiant panel 15, there is a flow path 151 through which the cooling medium passes, and an inlet 153 and an outlet 154 for the cooling medium. In the example of FIG. 2, the inflow port 153 and the outflow port 154 are provided at substantially opposite positions of the radiating panel 15, but are not limited to such an example. The radiating panel 15 has a plurality of air vents 152 penetrating the front and back surfaces. That is, the shape of the flow channel 151 is a substantially rectangular parallelepiped having a plurality of pillars each having a vent hole 152 inside. The vent hole 152 is preferably provided over almost the entire surface of the radiation panel 15. As will be described later, in order to cover the surface of the radiation panel 15 with air discharged from the vent holes 152, it is preferable to shorten the interval between the vent holes 152 and increase the number of the vent holes 152. Further, the opening ratio of the vent hole 152 with respect to the area of the radiating panel 15 is appropriately designed so that, for example, the jet of air from the vent hole 152 does not attract the air in the chamber 2 to the surface of the radiating panel 15 as much as possible. To do. Moreover, the radiation panel 15 may be provided with a cover 155 (illustrated in FIG. 3) for sending air from the air passage 13 to each vent hole 152 without leakage. When the cover 155 is provided, a chamber (air chamber) is formed so as to further cover one surface (for example, the back surface) of the radiating panel 15 by the cover 115, and the air sent from the air blowing path 13 passes through the chamber. Branches to the pores 152. Thus, the radiation panel 15 according to the present embodiment can be used in combination with a water type and a pneumatic type.

FIG. 4A is a diagram for explaining a method of manufacturing the radiating panel 15 according to the present embodiment. FIG. 4A is a cross-sectional view showing one vent hole 152 and its periphery. The radiating panel 15 is formed by pressure-bonding two metal plates. The first and second plates are provided with a plurality of frustoconical recesses by drawing (deep drawing) processing. In FIG. 4A, the alternate long and short dash line indicates the direction of pressing using a punch. In addition, holes are provided in corresponding positions of the first and second plates on the bottom surface of each recess. The depth of the recess is, for example, about 5 mm, but is not limited to such an example. Moreover, although a hole is circular with a diameter of about 10 mm, for example, it is not restricted to such an example. Then, the bottom surface of the concave portion of the first plate and the bottom surface of the concave portion of the second plate are crimped together by aligning the holes. Moreover, the edge of the radiation panel 15 is crimped | bonded or welded, for example. In this way, the flow path 151 through which the cooling medium can be directly passed is formed between the first plate and the second plate, and penetrates the first plate and the second plate. Vent holes 152 are provided. The through hole 152 may be formed after the first plate having no holes and the second plate having no holes are pressure-bonded. Further, air may be blown out from the vent hole 152 without being biased depending on the balance between the opening ratio of the vent hole 152 of the radiating panel 15 and the amount of air to be blown out.

  The radiating panel 15 may be formed with a ventilation hole 152 by drawing one plate. FIG. 4B is a diagram for explaining a method of manufacturing the radiating panel 15 according to another example. In the example of FIG. 4B, the first plate is provided with a truncated conical recess by drawing. The second plate has a planar shape, and a hole is provided at a position corresponding to the hole of the first plate. Even in such a configuration, the flow path 151 through which the cooling medium can directly pass is formed between the first plate and the second plate, and the first plate and the second plate are also formed. Ventilation hole 152 is provided. In this case, the plate provided with the recess may be the front side or the back side of the radiation panel 15.

<Action>
Next, the operation of the radiation air conditioning system 1 will be described with reference to FIG. FIG. 5 is a diagram schematically showing the state of air in the chamber 2 after the activation of the radiant air conditioning system 1. In the case of the cooling operation, the combined radiant convection air conditioner 11 cools and dehumidifies air of 27.0 ° C. DB and 50% RH taken from the room 2 using the air heat exchanger 112. And the radiant convection combined use air conditioner 11 sends air to the upper layer (air layer A) in the chamber 2 through the air passage 13 and the radiation panel 15 as air of 12.0 ° C. DB and 90% RH. Here, the dew point temperature of the outflow air of 12.0 ° C. DB, 90% RH is 10.41 ° C. according to the wet air diagram. Further, the outflow air from the radiation panel 15 is gradually mixed with the air in the chamber 2. The middle layer (air layer B) in the chamber 2 includes mixed air in which outflow air and room air are mixed by 50%. That is, the mixed air is, for example, 19.5 ° C. DB, 67% RH, and the dew point temperature is 13.21 ° C. The lower layer (air layer C) in the room 2 is room air when the radiant air-conditioning system 1 is activated. The room air is 27.0 ° C. DB, 50% RH as described above, and the dew point temperature is 15.7 ° C. Moreover, the radiant convection combined use air conditioner 11 supplies water at 10 ° C. to the water supply path 14, for example. At this time, even if the heat loss in the water supply path 14 is estimated to be small, the surface temperature of the radiating panel 15 is about 12 ° C., for example. Here, even if the surface temperature of the radiating panel 15 is lowered to about 12 ° C., the dew point temperature of the outflow air of the upper layer A in the chamber 2 is 10.41 ° C., so that the radiating panel 15 does not condense. In the refrigeration cycle, the air heat exchanger 112 that affects the dew point temperature of the outflow air is connected upstream, and the radiant water heat exchanger 113 that affects the surface temperature of the radiant panel 15 is connected downstream in series. Thus, the dew point temperature of the air blown out from the radiating panel 15 is higher than the surface temperature of the radiating panel 15. Moreover, in this embodiment, since the indoor air taken in from the inlet 21 in the chamber 2 is circulated instead of taking in the outside air, the dew point temperature of the outflow air can be lowered to the above temperature.

When a radiant panel is installed indoors without countermeasures against condensation, conventionally, the surface temperature of the radiant panel is controlled to be higher than the dew point temperature of room air, thereby suppressing condensation. For example, when the dew point temperature is 15.7 ° C. and the water supply temperature is 16 ° C. for safety reasons, the radiation panel temperature is about 20 ° C. due to heat loss of the water supply pipe. On the other hand, the radiant air-conditioning system 1 according to this embodiment has a low dew point temperature around the radiant panel 15 by flowing cooled and dehumidified air from a plurality of vent holes 152 that penetrate the radiant panel 15. Even if it is wrapped with air and the surface temperature of the radiating panel 15 is lowered below the dew point temperature of the room air, dew condensation can be suppressed.

なお、ｔｐは放射パネルの表面温度［℃］、ｔｕは非パネル面（放射パネル以外の面）の平均温度［℃］であり、５．６７×１０^-8［Ｗ／ｍ²・Ｋ⁴］は、ステファン・ボルツマン定数である。 Next, the heat absorption amount of the radiation panel 15 will be described. The amount of heat absorbed by the radiating panel 15 changes according to the difference between the surface temperature of the radiating panel 15 and the ambient temperature. When the emissivity of each surface in the chamber 2 is 0.9, the endothermic quantity qr [W / m ² ] can be approximately calculated by the following formula 1.

Here, tp is the surface temperature [° C.] of the radiating panel, and tu is the average temperature [° C.] of the non-panel surface (surface other than the radiating panel), 5.67 × 10 ⁻⁸ [W / m ² · K ⁴ ]. Is the Stefan-Boltzmann constant.

According to the above formula, when tp is 16 ° C. and tu is 27 ° C., qr is −56.4 W / m ^2.
Is calculated. A negative value means endotherm. When tp is 20 ° C. and tu is 27 ° C., qr is calculated to be −37.3 W / m ² . That is, the endothermic amount when tp is 16 ° C. is increased 1.51 times compared to the endothermic amount when tp is 20 ° C. Therefore, a radiation panel having a surface temperature of 16 ° C. has the same amount of heat absorption even if the area is 1 / 1.51 times the area of the radiation panel having a surface temperature of 20 ° C. Therefore, in the case of the above temperature setting, the area of the radiation panel can be reduced by 34%, and the cost for manufacturing the radiation panel can be reduced.

Further, PMV (Predicted Mean Vote) is defined as a thermal environment evaluation index for evaluating comfort. The PMV value is calculated based on factors such as room temperature, average radiation temperature, airflow, humidity, metabolic rate, and clothing amount. If the PMV value is between -0.5 and +0.5, it is said that 90% of people are comfortable. If the metabolic rate is 1.1, the amount of clothes is 0.6, the room temperature is 27 ° C, and the average radiation temperature is 25 ° C, water radiation is used and the airflow is 0 m / s and the humidity is 50%. The PMV value is calculated as 0.46. However, if the air radiation is further used and the airflow is 0.25 m / s, the humidity is 45%, the room temperature is 29 ° C., and the average radiation temperature is 24 ° C., the PMV value is 0.43. That is, even if the room temperature increases from 27 ° C. to 29 ° C., the PMV value (ie, comfort) is almost the same as in the case of the water type radiation.

  In addition, the radiant air conditioning system 1 employs a radiant convection combined air conditioner 11 and a radiant panel 15 that can use both water and air types, so that the air passage 13 (for example, the air duct) and the water supply passage 14 of the air conditioner are used. Connection (for example, water supply piping) becomes easy, and workability is improved.

<Control method>
6A and 6B are process flow diagrams illustrating an example of a method for controlling the cooling operation of the radiant air conditioning system 1. When receiving the operation start instruction from the controller 22, the control unit 114 of the combined radiant convection air conditioner 11 performs processing as illustrated in FIGS. 6A and 6B. Note that the control unit 114 continuously acquires the suction temperature, the suction humidity, the blowout temperature, the blowout humidity, the outflow water temperature, the room temperature, and the like through various sensors, the pump water supply amount, and the cooling capacity (output). And so on. In the present embodiment, the cooling capacity (output) of the combined radiant convection air conditioner 11 is controlled by the operating frequency of the compressor 115.

First, the control unit 114 determines whether the startup operation is being performed (FIG. 6A: S1). Here, the predetermined time from the start of operation is set as the rising time, and the radiant air conditioning system 1 performs the rising operation until the predetermined time elapses after the start of operation. When it is determined that the start-up operation is being performed (S1: YES), the control unit 114 sets the rotation of the blower 111 to a high speed (H). By increasing the output in the start-up operation, the air-conditioning target can be quickly brought close to the target temperature. Thereafter, the process proceeds to S8.

  When it is determined that the engine is not in the start-up operation (S1: NO), the control unit 114 compares the outflow temperature acquired by the outflow water temperature sensor 142 with the indoor dew point temperature, and whether the outflow temperature + 1 ° C. ≦ the indoor dew point temperature. Judgment is made (S3). In addition, indoor dew point temperature can be calculated | required based on the suction temperature and suction humidity which the suction air temperature sensor 121 and the suction air humidity sensor 122 acquire. When the outflow temperature + 1 ° C. ≦ the room dew point temperature (S3: YES), the control unit 114 sets the rotation of the blower to high speed (H) (S4). Thereafter, the process proceeds to S8.

  On the other hand, when the outflow temperature + 1 ° C. ≦ the indoor dew point temperature is not satisfied (S3: NO), the control unit 114 determines whether the outflow temperature−1 ° C. ≦ the indoor dew point temperature (S5). When the outflow temperature is −1 ° C. ≦ the indoor dew point temperature (S5: YES), the control unit 114 sets the rotation of the blower to the medium speed (M) (S6). Thereafter, the process proceeds to S8.

  Moreover, when it is not outflow temperature -1 degreeC <indoor dew point temperature (S5: NO), the control part 114 sets rotation of a fan to low speed (L) (S7). Thereafter, the process proceeds to S8.

  After S2, S4, S6, or S7, the control unit 114 compares the suction temperature acquired by the suction air temperature sensor 121 with the set target temperature, and determines whether the target temperature + 3 ° C. ≦ the suction temperature (FIG. 6B: S8). When target temperature + 3 ° C. ≦ suction temperature (S8: YES), the control unit 114 operates the radiant convection combined air conditioner 11 with high output (S9). Specifically, the control unit 114 sets the operating frequency of the compressor 115 to 40 Hz or higher, for example. Thereafter, the process proceeds to S15.

  On the other hand, when the target temperature + 3 ° C. ≦ the suction temperature is not satisfied (S8: NO), the control unit 114 determines whether the target temperature + 1 ° C. ≦ the suction temperature is satisfied (S10). When it is target temperature + 1 ° C <= suction temperature (S10: YES), control part 114 operates radiation convection combined use air conditioner 11 with a moderate output (S11). Specifically, the control unit 114 sets the operation frequency of the compressor 115 to 20 Hz or more and less than 40 Hz. Thereafter, the process proceeds to S15.

  When the target temperature + 1 ° C. ≦ the suction temperature is not satisfied (S10: NO), the control unit 114 determines whether the target temperature−1 ° C. <the suction temperature, or 50% <the suction humidity (S12). When target temperature-1 ° C. <suction temperature or 50% <suction humidity (S12: YES), the control unit 114 operates the convection combined air conditioner 11 with a low output (S13). Specifically, the control unit 114 sets the operating frequency of the compressor 115 to, for example, 10 Hz or more and less than 20 Hz. Thereafter, the process proceeds to S15.

  On the other hand, when the target temperature is not 1 ° C. <the suction temperature and 50% is not the suction humidity, the control unit 114 operates the radiant convection air conditioner 11 with the lowest level output (S14). Specifically, the control unit 114 sets the operating frequency of the compressor 115 to, for example, less than 10 Hz. Thereafter, the process proceeds to S15.

After S9, S11, S13, or S14, the control unit 114 compares the target temperature acquired by the effluent water temperature sensor 142 with the suction temperature, and determines whether target temperature-1 ° C.> suction temperature is satisfied (S15). When target temperature-1 ° C.> suction temperature (S15: YES), the control unit 114 decreases the flow rate of water that the pump 141 sends to the radiation panel 15 (S16). For example, the control unit 114 increases the flow rate of the pump 141 by a factor of 0.8, and the process proceeds to S15. On the other hand, target temperature-
When 1 ° C. is not greater than the suction temperature (S15: NO), the control unit 114 determines whether to end the process (S17). For example, when the stop of the operation is instructed via the controller 22, it is determined that the process is ended (S17: YES), and the cooling operation is ended. If it is determined not to end the process (S17: NO), the process returns to S8. Furthermore, when target temperature-1 ° C.> suction temperature is not satisfied (S15: NO), if the flow rate of the pump 141 is equal to or less than a predetermined threshold value, it may be increased.

  The processes of S1 and S2 are controls for shortening the rise time at the start of operation. Since control is performed to increase the amount of air blown out from the vent hole 152 at the time of start-up, the time from the start of operation to a comfortable state utilizing the characteristics of the air type (convection type) that can cope with load fluctuations quickly Can be shortened.

  The processing from S3 to S7 is performed by the air heat exchanger 112 as the dew point temperature of the air in the chamber 2 is higher than the surface temperature of the radiation panel 15 (temperature of water passing through the flow path 151). Control is performed so that a large amount of air dehumidified to a dew point temperature lower than the temperature of water passing through the passage 151 is released from the vent hole 152. In addition, the specific rotation speed of the air blower 111 can be determined as appropriate. 6A, discomfort caused by the draft airflow can be suppressed within a range where condensation of the radiating panel 15 can be suppressed.

  In the processes from S8 to S14, the cooling operation is performed by increasing the output of the compressor 115 as the difference between the temperature in the chamber 2 and the target temperature increases. The specific operating frequency of the compressor 115 is not limited to the above example. In addition, the surface temperature of the radiating panel 15 (outflow temperature of water passing through the flow channel 151) is controlled to be lower as the load is larger. And as above-mentioned, through the process of S3-S7, when the outflow temperature is low, it controls so that the quantity of the air which blows off from a vent hole increases. Therefore, according to the processing of S3 to S14, taking advantage of the pneumatic (convection) characteristics of being able to respond quickly to fluctuations in load, for example, the time and load from the start of operation of the device to a comfortable state It becomes possible to shorten the time required to deal with the fluctuations in. Further, in a state close to the temperature set by the user, the draft and noise caused by the air current are suppressed, and the operation mainly using radiation is performed. In other words, by controlling according to the situation water that has a large heat capacity, small conveyance power and small temperature change, and air that has large conveyance power but can quickly cool the load, synergistic effects can be achieved by utilizing each characteristic. Can be obtained.

  Moreover, the process of S15 and S16 is controlled so that the flow volume of the water which flows through a radiation panel is reduced, when the temperature in the chamber 2 becomes lower than the target temperature range. In this way, it is possible to reduce the cooling capacity of the radiant panel at the time of low load, prevent overcooling in the chamber 2, and reduce the operating power of the pump.

  7A and 7B are process flow diagrams illustrating an example of a method for controlling the heating operation of the radiant air conditioning system 1. When receiving the operation start instruction from the controller 22, the control unit 114 of the combined radiant convection air conditioner 11 performs processing as shown in FIGS. 7A and 7B.

  First, the control unit 114 determines whether the startup operation is being performed (FIG. 7A: S21). Even during the heating operation, the radiating air-conditioning system 1 performs the rising operation until the predetermined time elapses after the operation is started, with the predetermined time from the operation start as the rising time. When it is determined that the vehicle is standing up (S21: YES), the control unit 114 sets the rotation of the blower 111 to a high speed (H). Thereafter, the process proceeds to S28.

When it is determined that the start-up operation is not being performed (S21: NO), the control unit 114 compares the outflow temperature acquired by the outflow water temperature sensor 142 with the room temperature and determines whether the outflow temperature is −3 ° C. ≧ the room temperature. (S23). When the outflow temperature is −3 ° C. ≧ the room temperature (S23: YES)
The control unit 114 sets the rotation of the blower to high speed (H) (S24). Thereafter, the process proceeds to S28.

  On the other hand, when the outflow temperature-3 ° C ≧ the room temperature is not satisfied (S23: NO), the control unit 114 determines whether the outflow temperature-1 ° C ≧ the room temperature is satisfied (S25). When it is the outflow temperature −1 ° C. ≧ the room temperature (S25: YES), the control unit 114 sets the rotation of the blower to the medium speed (M) (S26). Thereafter, the process proceeds to S28.

  Moreover, when it is not outflow temperature -1 degreeC> indoor temperature (S25: NO), the control part 114 sets rotation of a fan to low speed (L) (S27). Thereafter, the process proceeds to S28.

  After S22, S24, S26 or S27, the control unit 114 compares the suction temperature acquired by the suction air temperature sensor 121 with the set target temperature, and determines whether or not the suction temperature ≦ the target temperature−3 ° C. ( FIG. 7: S28). When it is suction temperature <= target temperature-3 degreeC (S28: YES), the control part 114 operates the radiant-convection combined use air conditioner 11 with a high output (S29). Specifically, the control unit 114 sets the operating frequency of the compressor 115 to 40 Hz or higher, for example. Thereafter, the process proceeds to S35.

  On the other hand, when the suction temperature ≦ the target temperature−3 ° C. is not satisfied (S28: NO), the control unit 114 determines whether the suction temperature ≦ the target temperature−1 ° C. (S30). When it is suction temperature <= target temperature-1 degreeC (S30: YES), the control part 114 operates the radiation convection combined use air conditioner 11 by a moderate output (S31). Specifically, the control unit 114 sets the operation frequency of the compressor 115 to 20 Hz or more and less than 40 Hz. Thereafter, the process proceeds to S35.

  Further, when the suction temperature ≦ the target temperature-1 ° C. is not satisfied (S30: NO), the control unit 114 determines whether or not the suction temperature <the target temperature (S32). When it is suction temperature <target temperature (S32: YES), the control part 114 operates the radiation convection combined use air conditioner 11 with a low output (S33). Specifically, the control unit 114 sets the operating frequency of the compressor 115 to, for example, 10 Hz or more and less than 20 Hz. Thereafter, the process proceeds to S35.

  On the other hand, when it is not suction temperature <target temperature (S32: NO), the control part 114 operates the radiation convection air conditioner 11 with the output of the lowest level (S34). Specifically, the control unit 114 sets the operating frequency of the compressor 115 to, for example, less than 10 Hz. Thereafter, the process proceeds to S35.

  After S29, S31, S33, or S34, the control unit 114 determines whether the suction temperature> the target temperature + 1 ° C. (S35). When the suction temperature> the target temperature + 1 ° C. (S35: YES), the control unit 114 decreases the amount of water that the pump 141 sends to the radiation panel 15 (S36). For example, the control unit 114 multiplies the flow rate of water delivered from the pump 141 by 0.8, and the process proceeds to S35.

  On the other hand, if the suction temperature> the target temperature + 1 ° C. is not satisfied (S35: NO), the control unit 114 determines whether to end the process (S37). For example, when the stop of the operation is instructed via the controller 22, it is determined that the process is ended (S37: YES), and the heating operation is ended. If it is determined not to end the process (S37: NO), the process returns to S21. If the suction temperature> the target temperature + 1 ° C. is not satisfied (S35: NO), it may be increased if the flow rate of the pump 141 is not more than a predetermined threshold.

The processes of S21 and S22 are controls for shortening the rise time at the start of operation. Controls to increase the amount of air blown out from the vents at the time of start-up, shortening the time from the start of operation to a comfortable state by taking advantage of the characteristics of the air type (convection type) that can quickly cope with load fluctuations become able to.

  Further, the processing from S23 to S27 is heated by the air heat exchanger 112 as the surface temperature of the radiating panel 15 (temperature of water passing through the flow path 151) is higher than the temperature of the air in the chamber 2. The air is controlled to blow out from the vent hole 152 more than usual. In addition, the specific rotation speed of the air blower 111 can be determined as appropriate. 7A, high-temperature air staying near the radiation panel (that is, the space on the ceiling side in the chamber 2) is diffused in the chamber 2 (the space on the floor side in the chamber 2) rather than room temperature. It is possible to reduce discomfort given to the user when the spatial temperature difference between the top and bottom is large.

  Furthermore, in S21 of FIG. 7A, when the temperature difference between the spatial upper and lower sides of the chamber 2 is equal to or larger than a predetermined threshold value, the process may proceed to S22 to rotate the blower 111 at a high speed (H). For example, the difference between the upper and lower temperature is to calculate the difference between the temperature measured by the room temperature sensor 23 in the room 2 and the suction temperature of the suction temperature sensor 121 that measures the temperature of the air sucked from the suction port 21 provided on the ceiling. Or may be obtained by providing sensors above and below the chamber 2. Also by doing in this way, due to the convection effect, it is possible to reduce discomfort given to the user when the temperature difference between the upper and lower sides is large.

  In the processing from S28 to S34, the heating operation is performed by increasing the output as the difference between the temperature in the chamber 2 and the target temperature increases. The specific operating frequency of the compressor 115 is not limited to the above example. Further, the larger the load, the higher the temperature of the air blown out from the vent hole and the surface temperature of the radiation panel 15 (that is, the outflow temperature of water passing through the flow path 151) are controlled. Further, when the outflow temperature becomes high, the amount of air blown out from the vent hole through the processing from S23 to S27 is controlled to increase. Such control makes it possible to reduce the time from the start of operation to a comfortable state by utilizing the characteristics of the air type (convection type) that can quickly cope with fluctuations in load. Further, in a state close to the temperature set by the user, the draft and noise caused by the air current are suppressed, and the operation mainly using radiation is performed. In other words, by controlling according to the situation water that has a large heat capacity, small conveyance power and small temperature change, and air that has large conveyance power but can quickly heat the load, a synergistic effect is achieved by utilizing the respective characteristics. Can be obtained.

  Moreover, the process of S35 and S36 is controlled so that the flow volume of the water which flows through a radiation panel is reduced, when the temperature in the chamber 2 becomes higher than a target temperature range. If it does in this way, the heating capability of a radiation panel can be reduced at the time of low load, and while the overheating in the chamber 2 can be prevented, the operating electric power of a pump can be reduced.

  Note that the control unit 114 may automatically switch between the cooling operation illustrated in FIG. 6 and the heating operation illustrated in FIG. 7. For example, the control unit 114 compares the suction temperature with the target temperature, and executes the cooling operation when the target temperature is lower, and executes the heating operation when the target temperature is higher.

<Second Embodiment>
FIG. 8 is a schematic configuration diagram illustrating an example of the radiation air conditioning system 1a according to the second embodiment. The fan coil 11 a included in the radiant air-conditioning system 1 a is connected to the water pipe 3 that carries external heat source water via the flow rate adjustment valve 16. And the heat source water taken in from the outside passes through the air heat exchanger 112a, and is sent to the radiation panel 15 through the water supply path 14. The flow rate adjusting valve 16 is connected to the control unit 114, and the control unit 114 can change the opening degree of the flow rate adjusting valve 16. That is, the control unit 114 can control the amount of heat source water flowing to the air heat exchanger 112a and the radiating panel 15. In the present embodiment, the radiant panel is connected in series in the flow path of the heat source water so that the air heat exchanger 112a that affects the dew point temperature of the outflow air is provided upstream and the radiant panel 15 is provided downstream. The dew point temperature of the air blown from 15 is higher than the surface temperature of the radiation panel 15. In addition, the code | symbol corresponding to the component similar to FIG. 1 which concerns on 1st Embodiment is attached | subjected, and description is abbreviate | omitted. Moreover, the radiation panel 15 can use the same thing as 1st Embodiment.

  The radiant air conditioning system 1a in FIG. 8 also performs substantially the same processing as in FIGS. 6A to 7B. However, in S9, S11 and S13, and S29, S31 and S33, the output of the fan coil 11a is controlled by changing the opening degree of the flow rate adjusting valve 16 instead of changing the operating frequency of the compressor. That is, in this embodiment, the output is increased by increasing the opening degree of the flow rate adjustment valve 16. Even if it is such a structure, the effect | action and effect similar to 1st Embodiment can be acquired.

<Third Embodiment>
FIG. 9 is a schematic configuration diagram illustrating an example of a radiant air conditioning system 1b according to the third embodiment. The radiant air conditioning system 1 b uses a fan coil 11 b instead of the radiant convection combined use air conditioner 11. The radiant air conditioning system 1b is connected to a water pipe 3 that carries external heat source water, and takes in the external heat source water into the air heat exchanger 112b using the pump 31. In addition, the code | symbol corresponding to the component similar to FIG. 1 which concerns on 1st Embodiment is attached | subjected, and description is abbreviate | omitted. Further, compared with the configuration of FIG. 8, the configuration of FIG. 9 is different in that the flow rate adjustment valve 16 is not provided.

  The fan coil 11 b takes in air from the inside of the chamber 2 through the intake passage 12. The fan coil 11b has an air heat exchanger 112b, and performs heat exchange between the air taken in from the chamber 2 and the heat source water taken from the outside. The fan coil 11 b has a blower 111 and sends the air that has passed through the air heat exchanger 112 b to the blower passage 13. The air passage 13 connects the fan coil 11 b and the radiation panel 15. The fan coil 11 b and the radiant panel 15 are also connected by the water supply path 14, and the heat source water that has passed through the air heat exchanger 112 b is sent to the radiant panel 15. In addition, the thing similar to 1st Embodiment can be used for the radiation panel 15. FIG.

<Action and effect>
For example, the air in the chamber 2 during the cooling operation is 27 ° C. DB, 50% RH, and the dew point temperature is 15.7 ° C. Moreover, the heat source water from the outside shall be introduce | transduced into the air heat exchanger 112b at 7 degreeC. In this case, for example, the air sent to the air passage 13 is 12 ° C. DB, 90% RH, and the dew point temperature is 10.41 ° C. For example, the water sent to the water supply path 14 will be 12 degreeC. Therefore, also in the case of the radiation air-conditioning system 1b according to the present embodiment, condensation on the radiation panel 15 is suppressed. The water after passing through the radiation panel 15 rises to, for example, 17 ° C. and returns to the refrigerator. Even with such a configuration, condensation of the radiation panel 15 can be suppressed.

  Further, for example, the air in the room 2 during the heating operation is assumed to be 20 ° C. DB and 50% RH. Moreover, the heat source water from the outside shall be introduce | transduced into the air heat exchanger 112b at 40 degreeC. In this case, for example, the air sent to the air supply path 13 is 35 ° C., and the water sent to the water supply path 14 is also 35 ° C. The radiation air-conditioning system 1b according to the present embodiment can also be operated at a high temperature while suppressing the loss of comfort due to the convection effect.

<Control method>
FIG. 10 is a process flow diagram showing an example of a method for controlling the cooling operation of the radiant air conditioning system 1b. When receiving the operation start instruction from the controller 22, the control unit 114 of the fan coil 11b performs processing as shown in FIG. The control unit 114 continuously acquires the suction temperature, the suction humidity, the blowout temperature, the blowout humidity, the outflow water temperature, the room temperature, and the like via various sensors, and changes the output of the blower 111 and the like. .

  First, the control unit 114 compares the suction temperature acquired by the suction air temperature sensor 121 with the set target temperature, and determines whether or not the target temperature + 3 ° C. ≦ the suction temperature (FIG. 10: S41). When it is target temperature + 3 degreeC <= suction temperature (S41: YES), the control part 114 operates the air blower 111 with a high output (S42). Specifically, the control unit 114 sets the rotation of the blower 111 to a high speed (H). Thereafter, the process proceeds to S45.

  On the other hand, when the target temperature + 3 ° C. ≦ the suction temperature is not satisfied (S41: NO), the control unit 114 determines whether the target temperature−1 ° C. ≦ the suction temperature is satisfied (S43). When it is target temperature-1 ° C <= suction temperature (S43: YES), control part 114 operates air blower 111 by a moderate output (S44). Specifically, the control unit 114 sets the rotation of the blower 111 to a medium speed (M). Thereafter, the process proceeds to S45.

  In addition, when the target temperature-1 ° C. ≦ the suction temperature is not satisfied (S43: NO), or after S42 or S44, the control unit 114 compares the outflow temperature acquired by the outflow water temperature sensor 142 with the blowout dew point temperature, and the outflow It is determined whether the temperature is equal to or lower than the blowing dew point temperature (S45). The blowing dew point temperature can be obtained based on the temperature and humidity acquired by the blowing air temperature sensor 131 and the blowing air humidity sensor 132. When the outflow temperature ≦ the blowout dew point temperature (S45: YES), the control unit 114 sets the rotation of the blower 111 to a high speed (H) (S46). Thereafter, the process returns to S41. On the other hand, when it is not outflow temperature ≤ blowing dew point temperature (S45: NO), control part 114 sets rotation of air blower 111 to medium speed (M) (S47). Thereafter, the control unit 114 determines whether the target temperature-1 ° C. <suction temperature or 50% <suction humidity (S48). When target temperature-1 ° C. <suction temperature or 50% <suction humidity (S48: YES), the control unit 114 sets the rotation of the blower 111 to a low speed (L) (S49). Thereafter, the control unit 114 determines whether to end the process (S50). For example, when the stop of the operation is instructed via the controller 22, it is determined that the process is ended (S50: YES), and the cooling operation is ended. On the other hand, when it is determined not to end the process (S50: NO), the process returns to S41.

  In the present embodiment, even when the difference between the temperature in the chamber 2 and the target temperature is large, the dew point temperature of the air around the radiating panel 15 is controlled to be lower than the surface temperature of the radiating panel 15. Is also handled by increasing the rotation speed of the blower 111. Even with such a configuration and control, dew condensation on the radiating panel 15 can be suppressed even if the surface temperature of the radiating panel 15 is lower than the dew point temperature of the air in the chamber 2.

  Moreover, even if the rotational speed of the blower 111 is lowered when the air conditioning load is reduced, the comfort is maintained by the effect of radiation cooling. The heat source water after heat exchange with air by the air heat exchanger 112b of the fan coil 11b can be further radiatively cooled by the radiant panel 15, so that both the capacity of the fan coil and the capacity of the radiant panel can be utilized. Therefore, as compared with the air-type radiant air-conditioning using a fan coil, the same capacity can be secured as a whole even if the capacity of the fan coil is reduced, and the cost can be reduced by reducing the capacity of the fan coil.

  FIG. 11 is a process flow diagram illustrating an example of a method for controlling the heating operation of the radiant air conditioning system 1b. When receiving the operation start instruction from the controller 22, the control unit 114 of the fan coil 11b performs processing as shown in FIG.

  First, the control unit 114 compares the suction temperature acquired by the suction air temperature sensor 121 with the set target temperature, and determines whether the suction temperature ≦ the target temperature−3 ° C. (FIG. 11: S51). When suction temperature ≦ target temperature−3 ° C. (S51: YES), the control unit 114 sets the rotation of the blower 111 to a high speed (H). (S52). Thereafter, the process proceeds to S56.

  On the other hand, when the suction temperature ≦ the target temperature−3 ° C. is not satisfied (S51: NO), the control unit 114 determines whether the suction temperature ≦ the target temperature + 1 ° C. (S53). When the suction temperature ≦ the target temperature + 1 ° C. (S53: YES), the control unit 114 sets the rotation of the blower to the medium speed (M) (S54). Thereafter, the process proceeds to S56.

  Moreover, when it is not suction temperature <= target temperature + 1 degreeC (S53: NO), the control part 114 sets rotation of the air blower 111 to low speed (L) (S55). Thereafter, the control unit 114 determines whether to end the process (S56). For example, when the stop of the operation is instructed via the controller 22, it is determined that the process is ended (S56: YES), and the heating operation is ended. On the other hand, when it is determined not to end the process (S56: NO), the process returns to S51.

  In the above process, the heating operation is performed by increasing the rotational speed of the blower 111 as the difference between the temperature in the chamber 2 and the target temperature increases. In addition, the value shown as a specific condition is not limited to said example. Moreover, since it controls so that the quantity of the air which blows off from a vent hole increases, so that a load is large, a convection effect can be improved, so that the radiation panel 15 becomes high temperature. Moreover, even if the rotational speed of the blower 111 is lowered when the air conditioning load is reduced, the comfort is maintained by the effect of radiant heating.

  Also in this embodiment, the control unit 114 may automatically switch between the cooling operation shown in FIG. 10 and the heating operation shown in FIG. For example, the control unit 114 compares the suction temperature with the target temperature, and executes the cooling operation when the target temperature is lower, and executes the heating operation when the target temperature is higher.

<Fourth Embodiment>
FIG. 12 is a schematic configuration diagram illustrating an example of a radiant air conditioning system 1c according to the fourth embodiment. The radiant air conditioning system 1c is provided with a switching three-way valve 17 that can switch the flow path of the external heat source water to either the air heat exchanger 112c or the radiating panel 15 instead of the flow rate adjustment valve 16. This is different from the radiation air conditioning system 1a shown in FIG. In FIG. 12, the same components as those in FIG. 8 are denoted by the corresponding reference numerals, and the differences will be mainly described below.

<Control method>
FIG. 13 is a process flow diagram showing an example of a method for controlling the cooling operation of the radiant air conditioning system 1c. Note that S61 to S66 and S68 to S70 substantially correspond to S41 to S46 and S48 to S50 in FIG. However, in S66, the switching three-way valve 17 is further switched to the air exchanger 112c side, and the same operation as in the example of FIG. 10 is performed. In S <b> 69, the switching three-way valve 17 is further switched to the radiation panel 15 side, and the heat source water is directly introduced into the radiation panel 15. According to the process of S69, the surface temperature of the radiation panel 15 becomes the same level as the case of S49. For example, 7 ° C. heat source water flows to the radiating panel 15. In addition, indoor air of 27 ° C. DB and 50% RH is taken in from the air inlet 21 and is blown out from the radiating panel at about 12 ° C. DB and about 90% RH. Then, the radiation panel 15 and the air in the chamber 2 exchange heat, and the temperature of the radiation panel rises to about 12 ° C. At this time, comfort is not reduced by convection cooling and radiation cooling of the radiation panel, and condensation of the radiation panel 15 can also be suppressed.

FIG. 14 is a process flow diagram illustrating an example of a method for controlling the heating operation of the radiant air conditioning system 1c. Note that S81 to S87 substantially correspond to S51 to S57 in FIG. However, in S82, the switching three-way valve 17 is further switched to the air exchanger 112c side, and the same operation as in the example of FIG. 11 is performed. In S84, the switching three-way valve 17 is further switched to the air exchanger 112c side, and the same operation as in the example of FIG. In S85, the switching three-way valve 17 is further switched to the radiation panel 15 side, and the heat source water is directly introduced into the radiation panel 15. According to the process of S85, the surface temperature of the radiation panel 15 becomes the same level as the case of S55. For example, 40 ° C. heat source water flows to the radiation panel 15. Also, room air of 20 ° C. DB and 50% RH is taken in from the air inlet 21 and is blown out from the radiation panel at about 30 ° C. DB and about 32% RH. The radiant panel 15 and the air in the chamber 2 exchange heat, and the radiant panel reaches about 30 ° C. As the heat source water passes through the air heat exchanger, convection heating can be performed and the temperature of the heat source water passing through the radiant panel 15 is lowered, so that it is given to the user when the temperature difference between the top and bottom is large. Discomfort can be reduced and comfort is maintained.

<Panel Modification 1>
FIG. 15 is a plan view showing a radiation panel 15a according to a modification. The radiation panel 15a has a slit-shaped air hole 152a along the periphery of the radiation panel 15a. The above-mentioned radiant panel 15 wraps the periphery of the radiant panel 15a with air having a low dew point temperature by flowing cooled and dehumidified air from the plurality of vent holes 152, and the surface temperature of the radiant panel 15 is set to the dew point temperature of room air. It is possible to suppress dew condensation even if it is lowered. That is, by providing the vent hole 152 over the entire surface of the radiating panel 15, the jet air from the vent hole 152 prevents the indoor air having a high dew point temperature from being attracted to the surface of the radiating panel 15. However, for example, when the radiating panel 15 is suspended from the ceiling of the chamber 2, the air flow (jet flow) flowing out from the vent hole 152 is diffused, and the surrounding air is attracted to the side surface and the surface of the radiating panel 15. There is a fear. And if the air in the chamber 2 is attracted to the side surface and the surface of the radiating panel 15, it may cause condensation. Therefore, the radiating panel 15a according to the present modification has slit-shaped air holes 152a along the periphery, and blows out more dehumidified air near the periphery of the radiating panel 15a. In other words, the slit-shaped air holes 152a provided along the periphery of the radiating panel 15a are air holes having a larger opening area than the air holes 152 near the center. It can be said that an air flow that does not attract the air inside to the radiation panel 15a side is created. If it does in this way, it can control that air in room 2 is attracted to the side of radiation panel 15a. Moreover, even if the air in the chamber 2 is attracted to some extent, by mixing more dehumidified air at the location. Condensation can be suppressed.

<Panel Modification 2>
Further, the slit-shaped air holes may be cut and raised toward the outer peripheral side of the radiation panel. FIG. 16 is a cross-sectional view showing a radiation panel 15b according to a modification. FIG. 17 is a perspective view showing a radiation panel 15b according to a modification. In this modification, the slit-like vent hole 152b provided near the periphery of the radiating panel 15b is cut and raised and bent (that is, bent twice), and air is blown onto the slit-like vent hole 152b. A blowing direction guiding portion 156 for guiding the direction is provided. By the blowing direction guiding portion 156, the vent hole 152b blows air in the outer peripheral direction of the radiating panel 15b along the surface of the radiating panel 15b. If it does in this way, while surrounding the radiation panel 15b with air with low dew point temperature, it can suppress that the air in the chamber 2 is attracted to the side surface of the radiation panel 15b.

<Panel Modification 3>
FIG. 18 is a cross-sectional view showing a radiation panel 15c according to a modification. The radiating panel 15c is provided with a filling 18 in the chamber so that air is blown out uniformly from each vent hole. The filler 18 is, for example, a porous body, and is uniformed so that the air holes 152 that discharge the air sent from the air passage 13 are not biased. With such a configuration, the air blown out from the vent hole may be made uniform.

<Panel Modification 4>
The radiant panel may include a supply header and a return header at opposite ends of the flow channel 151. FIG. 19 is an exploded perspective view of a radiation panel 15d according to a modification. The radiating panel 15d is substantially rectangular. A supply header 153a is provided on the opposite side of the radiating panel 15d over the width of the flow path to allow the cooling medium to flow without being biased in the flow path, and is provided over the width of the flow path 151. A return header 154a serving as an outlet is provided. If it does in this way, a cooling-heat medium can be spread in the radiation panel 15d evenly.

  The modifications of the radiation panel as described above can be applied to the first to fourth embodiments. Moreover, you may combine the characteristic of the radiation panel which concerns on a some modification.

<Other variations>
In the above-described example, the radiation panel is described as being installed on the ceiling, but the present invention is not limited to such a configuration. For example, the radiating panel may be provided on the wall surface in the chamber 2 or may be placed upright on the floor surface. Since the radiation panel which concerns on this invention can suppress dew condensation, it can be said that there are few restrictions in selecting an installation place. Further, in the above example, heat exchange can be performed efficiently by directly flowing a cooling medium inside the radiant panel, but the configuration is not limited thereto. For example, a long and narrow flow path may be formed so that water passes through the entire surface of the radiant panel, and a pipe serving as a flow path for the cooling medium may be provided inside the radiant panel.

  The illustrated processing flow is also an example. For example, the number of rotations of the blower 111 and the output of the combined radiant convection air conditioner 11 (the operation frequency of the compressor and the opening of the flow rate adjusting valve) may be controlled in more stages, or may be predetermined. Control may be performed in a stepless manner (linearly) based on the temperature or the like.

1, 1a, 1b, 1c Radiant air conditioning system 11 Radiant convection combined use air conditioners 11a, 11b, 11c Fan coils 112, 112a, 112b, 112c Air heat exchanger 113 Radiant water heat exchanger 114 Control unit 12 Intake passage 121 Intake air temperature Sensor 122 Suction air humidity sensor 13 Blower passage 131 Blow air temperature sensor 132 Blow air humidity sensor 14 Water supply passage 141 Pump 142 Outflow water temperature sensor 15, 15a, 15b, 15c, 15d Radiation panel 151 Flow passage 152, 152a, 152b Ventilation hole 153 Inlet 153a Supply header 154 Outlet 154a Return header 155 Cover 156 Blowing direction guide 16 Flow control valve 17 Switching three-way valve 18 Filling 2 Chamber 21 Inlet 22 Controller 23 Room temperature sensor 3 External heat source water 31 Pump

Claims (8)

A radiant panel used for radiant air conditioning,
A flow path that is provided between the front surface and the back surface of the radiating panel and allows the cooling medium to pass through;
A ventilation hole that penetrates the front surface and the back surface, circulates indoor air, and serves as a vent for conditioned air with adjusted temperature and humidity;
I have a,
The vent hole is provided by pressing a bottom surface of a recess formed by drawing at least one of the front surface and the back surface to the other surface and punching at least a part of a region to be pressed.
Radiant panel. The radiating panel according to claim 1, wherein the flow path is provided so that water as the cooling medium can be directly passed between the front surface and the back surface. The radiation panel according to claim 1 or 2 , wherein a part of the vent hole is provided in a slit shape along a peripheral edge of the radiation panel. The radiating panel according to claim 3 , wherein the slit-shaped air holes are cut and raised so that a direction in which the conditioned air is blown toward an outer periphery of the radiating panel. Wherein the radiation panel is substantially rectangular, the opposite side of the radiation panel in the channel, any one of claims 1 to 4 having a supply header and return header for flowing without cold media bias in the flow path Radiant panel as described in. A radiant panel for use in radiant air conditioning, which is provided between a front surface and a back surface of the radiant panel, passes a cooling medium, passes through the front surface and the back surface, circulates indoor air, and air outlet of the conditioned air to adjust the temperature and humidity and Do Ri, while crimping the other surface of the bottom surface of said surface and recesses formed by applying on at least one drawing of the back, at least a part of the area to be crimped A radiant panel having a vent hole provided by drilling ;
A radiant convection air conditioner or fan coil that takes in the room air and sends conditioned air to the vents of the radiant panel;
Radiation air conditioning system comprising. The radiation air-conditioning system according to claim 6 , further comprising a control unit that controls temperature and humidity so that a dew point temperature of the conditioned air blown from the vent hole is lower than a surface temperature of the radiation panel. Wherein the control unit (1) at the start of operation, (2) when the temperature difference of the indoor dew point temperature and the surface temperature of the radiation panel during cooling is not smaller than a predetermined threshold value, or (3) during the heating The radiation according to claim 7 , wherein when the temperature difference between the room temperature and the surface temperature of the radiation panel is equal to or greater than a predetermined threshold, the amount of the conditioned air blown out from the vent hole is controlled to be larger than in other cases. Air conditioning system.

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