JP2011247475A - Air cooling system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air cooling system which cools a room by setting a cooling environment in detail, and quickly cools the room to a desired temperature environment.SOLUTION: The air cooling system has: a radiation cooling means 3 for performing radiation cooling from the ceiling 2 of a room to be cooled 1; a blower means 5 blows air around the ceiling 2 of the room to be cooled 1 toward the floor side or air on the floor side of the room to be cooled 1 toward around the ceiling; a detection means 6 for detecting room information of the room to be cooled 1; and a control means 7 for controlling an operation of the radiation cooling means 3 and an operation of the blower means 5 including blowing direction determination based on a detection result of the detection means 6.

Description

  The present invention relates to a cooling system that performs radiation cooling.

  2. Description of the Related Art Conventionally, in order to perform gentle cooling without giving a draft feeling to a person in a room, a radiation cooling device that performs cooling by cooling radiation from the ceiling has been used.

  Patent Document 1 discloses a cooling system that includes a radiation panel that is provided on a ceiling and that performs radiation cooling of a room to be cooled, and a ceiling fan that stirs air in the room to be cooled. In this cooling system, the operation of the ceiling fan is controlled so that the temperature distribution in the cooling room is uniform based on the surface temperature of the radiant panel detected by the surface temperature detecting means and the room temperature detected by the room temperature detecting means.

JP-A-6-159774

  By the way, since the cooling by the system of Patent Document 1 controls only the ceiling fan based on the room information of the room to be cooled, it is difficult to set the cooling environment in detail, and it is difficult to perform comfortable and efficient cooling. . In addition, since the temperature environment in the cooling room varies depending on various factors such as air temperature, weather, cooling time, presence / absence of people, and the like, as in Patent Document 1, only the operation of the ceiling fan is controlled. It is difficult to quickly bring the cooling chamber to the target temperature environment.

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a cooling system that can perform cooling with a finely set cooling environment and can quickly set the cooling room to a target temperature environment. .

  In order to solve the above problems, a cooling system of the present invention includes a radiant cooling unit that performs radiant cooling from a ceiling of a cooling room, a blast that sends air in the vicinity of the ceiling in the cooling room to the floor, and a cooling system in the cooling room. Blower means that can be operated by switching the air flow that sends air on the floor side to the vicinity of the ceiling, detection means that detects room information of the cooling room, operation of the radiation cooling means based on the detection result of the detection means, and Control means for controlling the operation of the air blowing means including determination of the direction of the air blowing is provided.

  Further, the detection means includes at least an ambient temperature detection sensor for detecting a room temperature on the floor side in the cooling room, and the control means is based on at least a room temperature detected by the ambient temperature detection sensor and a preset set temperature. It is preferable to control the operation of the radiation cooling means and the operation of the air blowing means.

  Further, the detection means includes at least an ambient temperature detection sensor for detecting a room temperature on the floor side in the cooling room and a near-ceiling temperature detection sensor for detecting a temperature near the ceiling in the cooling room, and the control means includes at least the It is preferable that the operation of the radiant cooling means and the operation of the air blowing means are controlled based on detection results of the ambient temperature detection sensor and the near-ceiling temperature detection sensor and a preset temperature set in advance.

  Moreover, it is preferable to provide a human sensor for detecting at least a person in the cooling room as the detection means.

  In this case, the control means determines the presence / absence of a person in the cooling room based on the detection result of the human sensor, and operates the radiation cooling means when there is a person in the cooling room, It is preferable that the operation of the radiant cooling means is stopped when there is no person.

  Further, in this case, the control means operates the radiant cooling means when a person is present in the cooled room and operates the air blowing means so that air in the vicinity of the ceiling is sent to the floor side. It is preferable to stop the operation of the radiant cooling means and stop the air blowing means when the person is not present, or to operate the air blowing means so that the air on the floor side in the room to be cooled is sent to the vicinity of the ceiling.

  Further, the detection means includes at least a wall temperature sensor for detecting the temperature of the wall surface of the cooling chamber, and the control means is based on at least a temperature detected by the wall temperature sensor and a preset set temperature. It is preferable to control the operation of the radiation cooling means and the operation of the blower means.

  Further, as the control means, a blower means controller for controlling the operation of the blower means, a radiant cooling means controller for controlling the operation of the radiant cooling means, and the airflow based on the detection result of the detection means. A controller for indirectly controlling the operation of the blowing means and the operation of the radiant cooling means by sending a control signal to each of the controller for the means and the controller for the radiant cooling means, It is preferable that the instrument controller and the controller are provided separately.

  In the present invention, it is possible to control the operation of the air-cooling means including the operation of the radiant cooling means and the determination of the direction of the air-flow based on the room information detected by the detection means, and to set the cooling environment in detail Cooling can be performed. In addition, the cooling room can be quickly brought to the target temperature environment.

It is a schematic block diagram of the cooling system of 1st embodiment of this invention. It is explanatory drawing which shows a mode that the air in a to-be-cooled room is cooled by the same radiation cooling means. It is a block diagram same as the above. It is a control flow same as the above. It is a schematic block diagram of the air conditioning system of 2nd embodiment. It is a block diagram same as the above. (A) to (d) are graphs in which the vertical axis is height, the horizontal axis is temperature, and the temperature Tc, room temperature Ta, and set temperatures Te1 and Te2 are plotted. It is a schematic block diagram of the air conditioning system of 3rd embodiment. It is a block diagram same as the above. It is a time chart same as the above. It is a time chart of the air conditioning system of 4th embodiment. It is a schematic block diagram of the air conditioning system of 5th embodiment. It is a block diagram same as the above. It is a graph showing the area to which the combination of room temperature Ta and wall surface average temperature Twa belongs, where the horizontal axis is room temperature Ta and the vertical axis is wall surface average temperature Twa. It is explanatory drawing which shows an interior panel.

  Hereinafter, the present invention will be described with reference to the accompanying drawings.

  (First Embodiment) First, the first embodiment will be described. The cooling system of the present embodiment shown in FIGS. 1 to 4 performs radiant cooling of a cooling room 1 composed of one room of a building.

  This cooling system includes a radiant cooling unit 3 that performs radiant cooling from the ceiling 2 of the cooling chamber 1, and a blower unit 5 that stirs the air in the cooling chamber 1. Moreover, the detection means 6 which detects the indoor information of the to-be-cooled room 1, the control means 7 which controls the operation | movement of both the radiation cooling means 3 and the ventilation means 5 based on the detection result of the detection means 6, and the operation device 20 are provided. I have.

  The radiant cooling means 3 includes a cooling unit 8 (see FIGS. 1 and 2) and a cooling device 9 (see FIG. 3) provided on the ceiling 2. The cooling unit 8 is made of a ceiling material constituting the entire ceiling surface of the room 1 to be cooled, and the cooling device 9 is made of an air conditioner. The cooling device 9 is installed on the back of the ceiling 2 and drives the compressor 10 and the fan 11 (see FIG. 3) to flow cool air over the cooling unit 8 in the space behind the ceiling 2 as shown in FIG. 8 is cooled and radiation cooling by cold radiation is performed. The radiant cooling means 3 can switch the operation level of the radiant cooling means 3. The switching of the operating level of the radiant cooling means 3 is performed, for example, by adjusting the output of the compressor 10 or the fan 11 or performing an intermittent operation.

  The air blowing means 5 is composed of a ceiling fan provided at the center of the ceiling surface of the room 1 to be cooled. The blower 5 can rotate the fan in both forward and reverse directions, and by rotating in one direction, as shown by an arrow a in FIG. 1, downward air that sends air in the vicinity of the ceiling 2 of the cooling chamber 1 to the lower floor side. It can be performed. Further, by rotating the fan in the reverse direction, as shown by an arrow b in FIG.

  The detection means 6 detects the room information of the to-be-cooled room 1 which is a factor for determining the driving method of the radiation cooling means 3 and the air blowing means 5 during automatic cooling. In the present embodiment, the detection means 6 includes a ceiling vicinity temperature detection sensor 15, an ambient temperature detection sensor 16, a wall temperature sensor 17, and a human sensor 18. A plurality of sensors 15, 16, 17, and 18 may be provided as necessary.

  The near-ceiling temperature detection sensor 15 is provided in the air blowing means 5 and is disposed in the vicinity of the ceiling 2, and detects the temperature Tc in the vicinity of the ceiling 2 of the cooling room 1. The ambient temperature detection sensor 16 is provided on the operation unit 20 installed at a middle position in the vertical direction on the wall surface 19 of the cooling chamber 1, and is located on the floor side of the cooling chamber 1 (that is, below the vicinity of the ceiling 2). Room temperature Ta (that is, the ambient temperature of the region where the user is generally present) is detected. The wall temperature sensor 17 includes a pyroelectric sensor, and detects the temperature Tw of the wall surface 19 at substantially the same height as the atmosphere temperature detection sensor 16. The human sensor 18 includes a pyroelectric sensor or the like, and is provided in the blower unit 5 to detect the presence or absence of a person in the cooling room 1.

  The control means 7 includes a blower means controller 21, a radiant cooling means controller 22, and a controller 23, and these three are provided individually.

  The blower means controller 21 can communicate with the blower means 5 to be controlled, and transmits the operating status of the blower means 5 to the controller 23. The controller for radiant cooling means 22 can communicate with the radiant cooling means 3 to be controlled, and transmits the operation status of the radiant cooling means 3 to the controller. Further, the controller 22 for radiant cooling means can communicate with the near-ceiling temperature detection sensor 15, the wall temperature sensor 17, and the human sensor 18, and the near-ceiling temperature detection sensor 15, the wall temperature sensor 17, and the person. Data detected by the sense sensor 18 is transmitted to the controller 23.

  The operation device 20 has an operation unit 25 for setting the set temperature Te. The operation device 20 also has a display function for displaying the operating states of the radiation cooling means 3 and the blower means 5.

  The controller 23 is provided in the operation device 20 and can communicate with the ambient temperature detection sensor 16 and the operation unit 25, and data detected by the ambient temperature detection sensor 16 and data set by the operation unit 25 are transmitted to the controller 23. It is set as follows.

  When the operation unit 25 is operated by the user while the set temperature Te is set, the control unit 7 controls the operation of both the radiant cooling unit 3 and the blower unit 5 to perform automatic cooling. During the automatic cooling, the control unit 7 repeatedly performs the control shown in FIG. 4 every predetermined time (for example, 1 minute), thereby controlling the operations of both the radiant cooling unit 3 and the blower unit 5.

  In the one-cycle control shown in FIG. 4, first, the controller 23 uses the sensors 15 to 18 to acquire the temperature Tc, the room temperature Ta, the wall surface temperature Tw, and the presence / absence of a person in the cooling room 1 as detection results. To do. And based on these detection results and the preset temperature Te preset by the operation device 20, the operation of the radiation cooling means 3 and the blowing means 5 is controlled as follows.

  First, the controller 23 calculates a temperature Tf as an index of the heat felt by the person in the cooling room 1 based on the room temperature Ta and the wall surface temperature Tw (s1). Next, a difference ΔT obtained by subtracting the room temperature Ta from the temperature Tc is calculated (s2). Next, based on the detection result of the human sensor 18, the presence / absence of a person in the cooling room 1 is determined (s3). Based on Table 1 below, the driving method of the radiant cooling means 3 and the air blowing means is determined according to whether ΔT is equal to or greater than 0 degrees and the presence or absence of a person in the cooling room 1. In Table 1, (12), when the temperature Tf is equal to or lower than the set temperature Te, the temperature Tc is equal to or higher than the room temperature Ta, and there is no person in the cooling chamber 1, the operation of the radiation cooling means 3 and the air blowing means 5 is stopped. It is controlled to do. However, in this case, the radiant cooling means 3 is operated at a low operating level and the air blowing means 5 is operated by upward air blowing, and the air in the cooling chamber 1 is sent to the vicinity of the ceiling 2 to cool the cooling section of the radiant cooling means 3. 8 may be used for cooling.

  As described above, in the present embodiment, the operation of both the radiant cooling means 3 and the air blowing means 5 is controlled based on the room information of the cooling room 1 detected by the detection means 6, and therefore the cooling environment in which the cooling environment is set in detail. In addition, the inside of the cooling chamber 1 can be quickly brought to a target temperature environment.

  In the present embodiment, the operation of the radiation cooling unit 3 and the operation of the blower unit 5 are controlled based on the detection results of the ambient temperature detection sensor 16 and the near-ceiling temperature detection sensor 15 and a preset temperature Te. That is, as shown in Tables 1 (1), (3), (5), (7), (9), and (11), in a situation where there is a person in the cooling room 1, the temperature Tf is set to the set temperature Te. In accordance with the magnitude of the difference obtained by subtracting, switching of the operation level of the radiant cooling means 3 (including switching of operation / stop) and operation / stop of the blower means 5 are switched. For this reason, it is possible to perform cooling that is comfortable for the user. In particular, as shown in Tables 1 (1), (7), and (9), when the difference between the temperature Tf and the set temperature Te is large, the radiant cooling means 3 is operated with a high operating level and the air blowing means 5 is directed downward. Drive with air blow. For this reason, it is possible to perform cooling with a draft feeling in which the cool air cooled by the cooling unit 8 of the radiation cooling means 3 is blown toward the user. When the difference between the temperature Tf and the set temperature Te is small as shown in Tables 1 (3), (5), and (11), the operation level of the radiant cooling means 3 is lowered or the operation of the radiant cooling means 3 is stopped. Or by stopping the operation of the air blowing means 5, it is possible to perform cooling that is gentle on the body without a draft feeling.

  In Tables 1 (2) and (4), when the temperature Tc is lower than the room temperature Ta and ΔT is small, the blower 5 is operated by upward blowing. In Tables 1 (8) and 1 (10), when the temperature Tc is equal to or higher than the room temperature Ta and ΔT is large, the operation of the blower 5 is stopped. By this control, when the temperature of the cooling unit 8 is low after the operation of the radiant cooling unit 3 is stopped, the air in the cooling chamber 1 can be sent to the vicinity of the ceiling 2 by the blower unit 5 and cooled by the cooling unit 8. The room temperature on the floor side in the cooling room 1 can be lowered by effectively using the cooling unit 8 after the operation is stopped. Further, when the temperature of the cooling unit 8 is high after the operation of the radiant cooling unit 3 is stopped, the operation of the blowing unit 5 is stopped to save energy.

  Moreover, in this embodiment, the human sensor 18 which detects the person who exists in the to-be-cooled room 1 is provided as the detection means 6. FIG. Then, the presence or absence of a person in the cooling room 1 is determined based on the detection result of the human sensor 18, and when there is a person in the cooling room 1, the radiant cooling means 3 is operated, and the person in the cooling room 1 is When there is no, the operation of the radiation cooling means 3 is stopped. For this reason, it can cool efficiently with respect to the person who exists in the to-be-cooled room 1.

  In this case, as shown in Table 1, (1), (3), (7), (9), when there is a person in the cooling room 1, the radiant cooling means 3 is operated and the blower means 5 is installed on the ceiling. Operate so that air in the vicinity of 2 is sent to the floor. Further, as shown in Table 1, (2), (4), (8), (10), when there is no person in the cooling chamber 1, the operation of the radiant cooling means 3 is stopped and the blowing means 5 is stopped. Or the air blowing means 5 is operated so that the air on the floor side in the cooling chamber 1 is sent to the vicinity of the ceiling. By this control, when there is a person, the cool air cooled by the cooling unit 8 can be sent to the floor side to perform cooling with a draft feeling. Further, when there is no person, the air in the cooling chamber 1 is sent to the vicinity of the ceiling 2 to be cooled by the cooling unit 8, and the cooling unit 8 after the operation is stopped is effectively used to floor the cooling chamber 1. The room temperature can be lowered.

  Further, in the present embodiment, a wall temperature sensor 17 is provided as the detection means 6, and the operation of the radiation cooling means 3 and the air blowing means 5 are performed based on the wall surface temperature Tw detected by the wall temperature sensor 17 and a preset temperature Te. To control the operation. In this way, the operation of the radiant cooling means 3 and the air blowing means 5 can be controlled in consideration of the radiant heat from the wall surface 19. For example, in this embodiment, the temperature Tf is calculated from the room temperature Ta on the floor side of the cooling chamber 1 detected by the ambient temperature detection sensor 16 and the wall surface temperature Tw detected by the wall temperature sensor 17. For this reason, the radiation cooling means 3 and the air blowing means 5 can be operated comfortably for the user in consideration of not only the room temperature Ta, which is the ambient temperature of the room 1 to be cooled, but also the radiant heat from the wall surface 19.

  Moreover, the three of the controller 21 for ventilation means, the controller 22 for radiation cooling means, and the controller 23 are provided individually. For this reason, it becomes possible to construct a set of the blowing means 5 and the controller 21 for blowing means, the set of the radiant cooling means 3 and the controller 22 for radiant cooling means, or a cooling system combining both. Moreover, the cooling system of this embodiment can be constructed | assembled by adding the controller 23 which controls these centrally, and various required sensors, and it can be set as a highly redundant cooling system.

  In the present embodiment, data detected by the near-ceiling temperature detection sensor 15, the wall temperature sensor 17, and the human sensor 18 are transmitted to the controller 23 via the blower means controller 21. However, these data may be transmitted directly to the controller 23. In the present embodiment, the controller 23 is provided in the operating device 20, but the controller 23 may be provided separately from the operating device 20. In the present embodiment, various data are transmitted to the controller 23, and the controller 23 controls the blower 5 and the radiant cooling means 3 via the blower controller 21 and the radiant cooling controller 22. . However, various data is transmitted to the blower means controller 21, and the radiant cooling means 3 and the blower means 5 are controlled by the blower means controller 21, or various data are transmitted to the radiant cooling means controller 22 to emit radiation. The radiant cooling means 3 and the air blowing means 5 may be controlled by the cooling means controller 22.

  (Second Embodiment) Next, a second embodiment will be described. In addition, in this embodiment, the same number is provided about the same structure as 1st embodiment, and the description which overlaps with 1st embodiment is abbreviate | omitted.

  The cooling system of the present embodiment shown in FIGS. 5 to 7 includes only a near-ceiling temperature detection sensor 15 and an ambient temperature detection sensor 16 as the detection means 6. In addition, by operating the operation unit 25 of the operation unit 20, a setting temperature Te1 that is a target room temperature near the ceiling of the room 1 to be cooled and a setting that becomes a target room temperature lower than the vicinity of the ceiling 2 of the room 1 to be cooled. The temperature Te2 can be set. Further, the control means 7 does not have the controller 23, so that the operating status of the blower means 5, the data detected by the ambient temperature detection sensor 16 and the data set by the operation unit 25 are transmitted to the blower means controller 21. Is set.

  Also in this embodiment, when the operation unit 25 is operated by the user with the set temperatures Te1 and Te2 set, the control unit 7 controls the operation of both the radiant cooling unit 3 and the blower unit 5 to perform automatic cooling. Done. In the one-cycle control executed every predetermined time during the automatic cooling, the air blower controller 21 uses the temperature sensor 15 near the ceiling and the ambient temperature sensor 16 to detect the temperature Tc near the ceiling 2 of the room 1 to be cooled. And the room temperature Ta on the floor side of the cooling room 1 is acquired as a detection result. Based on these detection results and the set temperatures Te1 and Te2, the operation of both the radiation cooling means 3 and the air blowing means 5 is controlled as follows.

  That is, in the one-cycle control, the blower means controller 21 first determines which one of the first to fourth temperature environments shown in FIGS. . The first temperature environment shown in FIG. 7A is a state where the temperature Tc is equal to or higher than the set temperature Te1 and the room temperature Ta is lower than the set temperature Te2. The second temperature environment shown in FIG. 7B is a state where the temperature Tc is lower than the set temperature Te1 and the room temperature Ta is equal to or higher than the set temperature Te2. The third temperature environment shown in FIG. 7C is a state where the temperature Tc is equal to or higher than the set temperature Te1 and the room temperature Ta is equal to or higher than the set temperature Te2. The fourth temperature environment shown in FIG. 7D is a state where the temperature Tc is lower than the set temperature Te1 and the room temperature Ta is lower than the set temperature Te2.

  When the air temperature controller 21 is in the first temperature environment, it operates the radiant cooling device 3 and operates the air blowing device 5 with upward air blowing. If the second temperature environment is present, the operation of the radiant cooling means 3 is stopped and the air blowing means 5 is operated by downward air blowing. In the case of the third temperature environment, the radiant cooling means 3 is operated and the air blowing means 5 is operated by upward air blowing. Further, in the fourth temperature environment, the operation of the radiant cooling means 3 is stopped and the operation of the blower means 5 is stopped. Further, when the radiant cooling means 3 is operated in this control, the operation level of the radiant cooling means 3 is controlled according to the difference between the room temperature Ta detected by the ambient temperature detection sensor 16 and the preset temperature Te. . In the third temperature environment, the radiant cooling means 3 may be operated and the air blowing means 5 may be controlled to operate with the downward air flow so that cooling with a draft feeling may be performed. .

  As described above, in the present embodiment, the operations of both the radiation cooling unit 3 and the blowing unit 5 can be controlled based on the detection results of the near-ceiling temperature detection sensor 15 and the ambient temperature detection sensor 16 and the set temperature Te. In this case, as indicated by arrows in FIGS. 7A to 7D, the temperature Tc near the ceiling 2 of the cooling chamber 1 and the room temperature Ta on the floor side of the cooling chamber 1 are set to the set temperatures Te1 and Te2, respectively. Therefore, the temperature distribution in the cooling room 1 can be quickly made comfortable for the user.

  In the present embodiment, both the set temperatures Te1 and Te2 can be set by the operating device 20. However, the operating device 20 may be configured to set only the set temperature Te2, and the set temperature Te1 may be automatically set based on the set temperature Te2. Moreover, in this case, it is preferable that the set temperature Te1 is automatically set to a temperature lower than the set temperature Te2 from the viewpoint of head cold foot heat.

  (Third Embodiment) Next, a third embodiment will be described. In addition, in this embodiment, the same number is provided about the same structure as 1st embodiment, and the description which overlaps with 1st embodiment is abbreviate | omitted.

  The cooling system of the present embodiment shown in FIGS. 8 to 10 includes only the ambient temperature detection sensor 16 and the human sensor 18 as the detection means 6. Further, the control means 7 does not have the controller 23, and the operating status of the air blowing means 5, the data detected by the ambient temperature detection sensor 16 and the human sensor 18, and the data set by the operation unit 25 are the air blower controller 21. Is set to be sent to.

  Also in this embodiment, when the operation unit 25 is operated by the user while the set temperature Te is set, the control unit 7 controls the operation of the radiant cooling unit 3 and the blower unit 5 to perform automatic cooling. In the one-cycle control executed every predetermined time during the automatic cooling, the air blower controller 21 uses the ambient temperature detection sensor 16 and the human sensor 18 to control the room temperature Ta and the person in the cooling room 1. Each presence / absence is acquired as a detection result. Based on these detection results and the set temperature Te, the operation of both the radiation cooling means 3 and the air blowing means 5 is controlled as follows.

  That is, as shown in FIG. 10, in the one-cycle control, the air blower controller 21 determines that there is a person in the cooling chamber 1 based on the detection result of the human sensor 18, and performs radiant cooling. While the means 3 is operated, the air blowing means 5 is operated by downward air blowing (period A in the figure). And when it determines with there being no person in the to-be-cooled room 1 in this state, while the driving | operation of the radiation cooling means 3 is stopped, the ventilation means 5 is driven by upward ventilation (B period in the figure). In addition, the operation of the air blowing means 5 is stopped when a predetermined time has elapsed since the operation of the air blowing means 5 by starting upward air blowing. Further, when the radiant cooling means 3 is in operation, the operation level of the radiant cooling means 3 is controlled according to the difference between the room temperature Ta detected by the ambient temperature detection sensor 16 and a preset temperature Te set in advance.

  Thus, in this embodiment, the operation of both the radiation cooling unit 3 and the blowing unit 5 can be controlled based on the detection results of the ambient temperature detection sensor 16 and the human sensor 18 and the set temperature Te.

  In particular, when there is a person in the room 1 to be cooled, the radiant cooling means 3 is operated and the air blowing means 5 is operated by the downward air blowing, so that a cooling with a draft feeling can be efficiently performed. In addition, when there is no person in the cooling room 1, the air blowing means 5 is operated by upward air blowing. For this reason, after the operation of the radiation cooling means 3 is stopped, the air in the cooling chamber 1 can be sent to the vicinity of the ceiling 2 by the blower means 5 and cooled by the cooling unit 8, and the cooling unit 8 after the operation is stopped is effective. It is possible to lower the room temperature Ta on the floor side in the cooling chamber 1 by utilizing the above.

  (Fourth Embodiment) Next, a fourth embodiment will be described. In addition, in this embodiment, the same number is provided about the structure same as 3rd embodiment, and the description which overlaps with 3rd embodiment is abbreviate | omitted.

  In the cooling system of the present embodiment shown in FIG. 11, a human sensor 18 is used instead of detecting the presence or absence of a person in the cooling room 1 in one-cycle control executed every predetermined time during automatic cooling. Thus, it is detected whether there is much or little movement of the person in the cooling room 1. And based on this detection result, the room temperature Ta on the floor side of the cooling chamber 1 detected by the ambient temperature detection sensor 16, and the set temperature Te, both the radiation cooling means 3 and the blowing means 5 are operated as follows. Control.

  That is, as shown in FIG. 11, the blower means controller 21 detects the movement of the person in the cooling room 1 based on the detection result of the human sensor 18 in the one-cycle control, and from this detection, a predetermined amount is detected. It is determined that there is much movement of the person in the cooling room 1 when the movement of the person in the cooling room 1 is detected again by the human sensor 18 until the time t1 elapses. Further, when the movement of the person in the cooling room 1 is not detected within the predetermined time t1, it is determined that the movement of the person in the cooling room 1 is small. And when it determines with there being much movement of the person in the to-be-cooled room 1, it operates the radiation | emission cooling means 3 and it drives the ventilation means 5 downward. Then, when the state in which the motion of the person in the cooling room 1 is not detected by the human sensor 18 continues for a predetermined time t2, the operation of the radiation cooling unit 3 and the blowing unit 5 is stopped. When it is determined that there is little movement of the person in the cooling room 1, the radiant cooling means 3 is operated and the air blowing means 5 is operated for a predetermined time t3 by upward air blowing. After that, when the state in which the motion of the person in the cooling room 1 is not detected by the human sensor 18 continues for a predetermined time t2, the operation of the radiation cooling means 3 is stopped. During the operation of the radiant cooling means 3, the difference between the room temperature Ta detected by the ambient temperature detection sensor 16 and the preset set temperature Te, or the difference between the difference and the movement of a person in the cooling room 1 is somewhat different. Accordingly, the operation level of the radiation cooling means 3 is controlled. Further, even if it is determined that the movement of the person in the cooling chamber 1 is small while the air blowing means 5 is operated with the upward air flow for the predetermined time t3, the air blowing means 5 is operated with the air flow upward for the predetermined time t3. The control to be canceled is cancelled.

  In this embodiment, when there is much movement of the person in the to-be-cooled room 1, since the radiation cooling means 3 is operated and the air blowing means 5 is operated by downward air blowing, it is possible to efficiently perform cooling with a draft feeling. Moreover, when there is little movement of the person in the to-be-cooled room 1, the ventilation means 5 is drive | operated by upward ventilation. For this reason, after the operation of the radiation cooling means 3 is stopped, the air in the cooling chamber 1 can be sent to the vicinity of the ceiling 2 by the blower means 5 and cooled by the cooling unit 8, and the cooling unit 8 after the operation is stopped is effective. Therefore, the room temperature Ta in the cooling chamber 1 can be reduced.

  (Fifth Embodiment) Next, a fifth embodiment will be described. In addition, in this embodiment, the same number is provided about the same structure as 1st embodiment, and the description which overlaps with 1st embodiment is abbreviate | omitted.

  The cooling system of the present embodiment shown in FIGS. 12 to 14 includes only an ambient temperature detection sensor 16 and a wall temperature sensor 17 as the detection means 6. In the present embodiment, four wall temperature sensors 17 are provided in the air blowing means 5 so that the temperatures of the four wall surfaces 19 of the cooling chamber 1 can be detected. Further, the control means 7 does not have the controller 23, and the operating status of the air blowing means 5, the data detected by the ambient temperature detection sensor 16 and the human sensor 18, and the data set by the operation unit 25 are the air blower controller 21. Is set to be sent to.

  Also in this embodiment, when the operation unit 25 is operated by the user while the set temperature Te is set, the control unit 7 controls the operation of both the radiant cooling unit 3 and the blower unit 5 to perform automatic cooling. .

  In the one-cycle control executed every predetermined time during the automatic cooling, the air blower controller 21 uses the ambient temperature detection sensor 16 and each wall temperature sensor 17 to measure the room temperature Ta and the room 1 to be cooled. The temperature Tw1 to Tw4 of the wall surface 19 is acquired as a detection result, and the operation of both the radiation cooling means 3 and the blower means 5 is controlled as follows based on the detection result and the set temperature Te.

  That is, the air blower controller 21 is preliminarily set as table information in accordance with the combination of the room temperature Ta and the wall surface average temperature Twa. The orientation is recorded. Then, in the one-cycle control, the blower means controller 21 first calculates the wall surface average temperature Twa (Twa = (Tw1 + Tw2 + Tw3 + Tw4) / 4) from the wall surface temperatures Tw1 to Tw4 detected by the wall temperature sensors 17. Next, based on the table information, the combination of the room temperature Ta and the wall surface average temperature Twa belongs to any of the areas (1) to (10) in FIG. 14 or the areas other than (1) to (10). It is determined whether or not. And the drive method of the radiation cooling means 3 and the ventilation means 5 is determined from this determination result as follows.

  When the air blower controller 21 belongs to an area other than the areas (1) to (10) in FIG. 14, it stops the operation of the radiant cooling device 3 and stops the operation of the air blower 5. Further, in the case of belonging to the area (1) or (10) in FIG. 14, the radiant cooling means 3 is operated at a low operating level, and the blower means 5 is operated by upward blowing. Further, in the case of belonging to the area (2) or (4) in FIG. 14, the radiant cooling means 3 is operated at a low operating level and the air blowing means 5 is operated by downward air blowing. In addition, when belonging to the area of (3), (5), or (7) in FIG. 14, the radiant cooling means 3 is operated with the operation level set to the middle, and the air blowing means 5 is operated with the downward air flow. In addition, when belonging to the area of (6), (8), or (9) in FIG. 14, the radiant cooling means 3 is operated with a high operating level, and the blower means 5 is operated with downward blowing.

  In the present embodiment, the radiation cooling means 3 and the air blowing means 5 can be operated based on the detection results of the ambient temperature detection sensor 16 and the wall temperature sensor 17. In particular, it is possible to perform comfortable cooling in consideration of the atmospheric temperature of the cooling room 1 that affects the heat felt by the user and the radiant heat from the wall surface 19, which is effective.

  In the second to fifth embodiments, various data are transmitted to the blower means controller 21, and the blower means controller 21 operates the blower means 5 and radiant cooling via the radiant cooling means controller 22. The operation of means 3 was controlled. However, various data are transmitted to the radiant cooling means controller 22 so that the radiant cooling means controller 22 controls the operation of the radiant cooling means 3 and the operation of the blower means 5 via the blower means controller 21. It may be. Further, as in the first embodiment, a controller may be provided separately from the blower means controller 21 and the radiation cooling means controller 22. That is, in this case, various data are transmitted to the controller, and the controller controls the operation of the radiant cooling means 3 via the radiant cooling means controller 22 and the blast means 5 via the blast means controller 21. Control driving.

  The communication of various data in the first to fifth embodiments may be either a wired method or a wireless method. In the first to fifth embodiments, the entire ceiling surface is the cooling unit 8, but a part of the ceiling surface may be the cooling unit. Further, the radiant cooling means 3 may be constituted by a radiant panel that is provided on the ceiling surface of the room 1 to be cooled and cooled by a heat pump or the like. Further, the detection means 6 is not limited to the first to fifth embodiments. For example, the sensor 6 detects various data in the air-cooled room 1 with a sensor, and PMD (Predicted Mean Vote), PPD (Predicted Percentage of Dissatisfied). ), A numerical value corresponding to an index such as a sensory temperature, a corrected effective temperature (CET), or the like may be calculated, and the operation of the radiation cooling unit 3 and the blowing unit 5 may be controlled based on the calculated value.

  Moreover, you may comprise the ventilation means 5 in 1st-5th embodiment with the interior panel 26 which has an air circulation function in the to-be-cooled room 1 as shown in FIG. The interior panel 26 is installed, for example, between pillars of a building and constitutes a part of the wall surface 19 of the room 1 to be cooled. An upper vent 27 and a lower vent 28 are respectively provided at the upper and lower ends of the front surface exposed to the interior side of the interior panel 26. The upper vent 27 and the lower vent 28 communicate with each other through an air passage (not shown) formed in the interior panel 26, and a circulation fan (not shown) is provided in the air passage. This circulation fan is rotatable in both forward and reverse directions. By rotating the circulation fan in one direction, the air in the vicinity of the ceiling 2 in the cooling chamber 1 is sucked into the air passage from the upper vent 27 as shown by the arrow c, and the air is shown by the arrow d. Air can be sent to the vicinity of the floor in the room 1 to be cooled via the lower vent 28. Further, by rotating the circulation fan in the reverse direction, as shown by an arrow e, the air in the vicinity of the floor in the cooling chamber 1 is sucked into the ventilation path from the lower vent 28 and this air is shown by the arrow f. As described above, the air sent to the vicinity of the ceiling 2 in the cooling chamber 1 can be performed through the upper vent 27. Even when the blower means 5 is constituted by such an interior panel 26, the same effect as that obtained when the blower means 5 is constituted by a ceiling fan can be obtained.

  The present invention is not limited to the examples described in the present specification and the examples illustrated in the drawings, and various design changes and improvements may be made without departing from the scope of the present invention. .

DESCRIPTION OF SYMBOLS 1 Cooling room 2 Ceiling 3 Radiation cooling means 5 Blowing means 6 Detection means 7 Control means 16 Ambient temperature detection sensor 17 Wall temperature sensor 18 Human sensor 19 Wall surface 21 Blower means controller 22 Radiation cooling means controller 23 Controller

Claims (8)

  Operation is switched between radiation cooling means for performing radiation cooling from the ceiling of the room to be cooled, and air blowing for sending the air in the vicinity of the ceiling inside the room to be cooled to the floor and air blowing for sending the air in the room to be cooled near the ceiling to the vicinity of the ceiling. Possible air blow means, detection means for detecting room information of the room to be cooled, and control of the operation of the air blow means including the operation of the radiation cooling means and the direction of the air blow based on the detection result of the detection means A cooling system comprising control means for performing   The detection means includes at least an ambient temperature detection sensor for detecting a room temperature on the floor side in the cooling room, and the control means is configured to detect the radiation based on at least a room temperature detected by the ambient temperature detection sensor and a preset set temperature. 2. The cooling system according to claim 1, wherein the operation of the cooling means and the operation of the air blowing means are controlled.   The detection means includes at least an ambient temperature detection sensor for detecting a room temperature on the floor side in the cooling room and a near-ceiling temperature detection sensor for detecting a temperature near the ceiling in the cooling room, and the control means includes at least the ambient temperature. 2. The cooling according to claim 1, wherein the operation of the radiant cooling unit and the operation of the blower unit are controlled based on detection results of the detection sensor and the temperature sensor near the ceiling and a preset temperature set in advance. system.   The cooling system according to any one of claims 1 to 3, further comprising a human sensor that detects at least a person in the cooling room as the detection unit.   The control means determines the presence / absence of a person in the cooling room based on the detection result of the human sensor, operates the radiation cooling means when there is a person in the cooling room, and the person in the cooling room The cooling system according to claim 4, wherein the operation of the radiant cooling means is stopped when it is not present.   The control means operates the radiant cooling means when a person is present in the cooling room and operates the air blowing means so that the air in the vicinity of the ceiling is sent to the floor side so that the person is present in the cooling room. 6. The operation of the radiant cooling means is stopped when there is not, and the air blowing means is stopped, or the air blowing means is operated so that the air on the floor side in the room to be cooled is sent to the vicinity of the ceiling. The cooling system described in 1.   The detection unit includes at least a wall temperature sensor that detects the temperature of the wall surface of the room to be cooled, and the control unit detects at least the temperature detected by the wall temperature sensor and a preset set temperature. The cooling system according to any one of claims 1 to 6, wherein operation of the means and operation of the blower means are controlled.   As the control means, a blower means controller for controlling the operation of the blower means, a radiant cooling means controller for controlling the operation of the radiant cooling means, and the blower means based on the detection result of the detection means. A controller for indirectly controlling the operation of the blowing means and the operation of the radiant cooling means by sending a control signal to each of the controller and the controller for the radiant cooling means, the controller for the blowing means and the radiant cooling means The cooling system according to any one of claims 1 to 7, wherein a controller and a controller are provided separately.

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