JP2006170471A - Task air conditioning system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a task ambient air conditioning system capable of improving temperature characteristics of an indoor task area and an ambient area, and sufficiently satisfying personal desire for amenity. <P>SOLUTION: In this task ambient air conditioning system for conditioning the air in the indoor task area S by the conditioned air supplied from a supply opening formed on a floor 1, a supply device (supply means) 11 for diffusing the amplitude of conditioned air (supply air SA) by changing the supplying direction of the conditioned air (supply air SA) supplied from the supply opening, is mounted on a supply opening portion of an underfloor space S1, and a temperature of the task area S is adjusted by controlling a time for supplying the conditioned air (supply air SA) toward the task area S at a constant flow rate by the supply device 11 and a time for supplying the conditioned air toward the ambient area excluding the task area. Further a fluid device module as an air flow switching means is mounted on the supply device 11. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a task ambient air conditioning system that air-conditions a task area and an ambient area in a room by a floor blowing method.

  In recent years, as an air conditioning method for office buildings, a working space where office workers stay (hereinafter referred to as “task area”) and other spaces such as passages and ceilings (hereinafter referred to as “ambient area”) are used. Individually controlled task ambient air conditioning systems have been proposed. According to this air conditioning system, unlike the conventional air conditioning system that uniformly heats and cools the room, the required task area is mainly heated and cooled or ventilated, so that energy consumption can be reduced and hot air can be saved. The merit of being able to respond to individual preferences regarding the coldness and the strength of the airflow can be obtained.

  By the way, in the conventional air conditioning system, a method of blowing out conditioned air from the ceiling side and stirring and equalizing the indoor atmosphere with this conditioned air was adopted, but this method is not suitable for local control, In a task ambient air conditioning system that intensively air-conditions a task area, a floor blowing system that exclusively blows conditioned air toward the task area from an air outlet formed on the floor surface is employed.

  When adopting such a floor blowing method, for example, as shown in FIG. 9, by turning the conditioned air (supply air SA) blown from the outlet of the floor 101 by the blowing device 111 provided in the underfloor space, The atmosphere in the task area where the desk 104 and the chair 105 are installed is diffused to reduce the draft (airflow) feeling (see Patent Document 1), or as shown in FIG. In addition to the swirling flow of SA), a method is adopted in which a personal air outlet 140 for blowing out conditioned air (air supply SA) toward the individual worker is separately provided at the upper end of the partition 150 (Patent Document 2).

JP-A-6-185757 JP 2003-279100 A

  However, in the method shown in FIG. 9, the swirling flow of the conditioned air (supply air SA) blown out from the outlet of the floor 101 cannot sufficiently meet the demands of the individual working, and also shown in FIG. In the method, the temperature of the task area is adjusted by adjusting the opening area of the individual outlet 140. Therefore, if the opening area is reduced, the blowing speed of the conditioned air (supply air SA) becomes slower and the conditioned air reaches the individual. (Supply air supply SA) may not reach, and the individual comfort requirements could not be satisfied sufficiently.

  Further, in the conventional system shown in FIGS. 9 and 10, since the blowing device 111 is provided with a movable portion for adjusting the air volume of the conditioned air (supply air SA), the structure becomes complicated and a failure occurs. There was also a problem that it was easy to do and increased the cost.

  The present invention has been made in view of the above problems, and the purpose of the process is to improve the temperature characteristics of the indoor task area, sufficiently satisfy individual comfort requirements, and at the same time the ambient area. The object is to provide a task ambient air conditioning system capable of air conditioning.

  In order to achieve the above object, the invention according to claim 1 is a task ambient air-conditioning system that air-conditions a task area in a room with air-conditioned air blown from a blow-out opening that opens to a floor. A blowing means for diffusing the conditioned air in amplitude by changing the blowing direction is provided at the outlet portion of the underfloor space, and the blowing means blows the conditioned air toward the task area at a constant flow rate and other ambient areas. It is characterized in that the temperature of the task area is adjusted by controlling the time to blow out.

  According to a second aspect of the present invention, in the first aspect of the present invention, a fluid element module is provided in the blowing means as an air flow switching means.

  According to a third aspect of the present invention, in the first aspect of the present invention, the blowing means is provided with a damper unit as an airflow switching means.

  A fourth aspect of the invention is characterized in that, in the invention according to any one of the first to third aspects, the blowing time of the conditioned air by the blowing means is controlled by remote operation with a wireless remote controller.

  According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, a circulation path of conditioned air is formed in a non-residential space including a ceiling space and an underfloor space, and an air conditioning unit is provided in the circulation path. It is characterized by arranging at least indoor units.

  According to the first aspect of the present invention, the conditioned air is diffused in amplitude by changing the blowing direction of the conditioned air in the task area while keeping the blowing velocity of the conditioned air constant without reducing the blowing area. Since the temperature of the area is controlled by controlling the time to blow out toward the task area and the time to blow out toward the other ambient area, the conditioned air reaches the individual sufficiently, and the temperature characteristics of the indoor task area As a result, it is possible to sufficiently satisfy individual comfort requirements and to perform air conditioning in the ambient area.

  According to the second aspect of the present invention, the fluid element module having a small number of movable parts is used as the air flow switching means. According to the third aspect of the invention, the damper unit having the same number of movable parts is used as the air flow switching means. The structure of the means is simplified to reduce the cost, and the occurrence of failure is suppressed.

  According to the fourth aspect of the present invention, since the individual can freely control the blowing time of the conditioned air by the blowing means by the remote operation by the wireless remote controller, the individual comfort requirement is satisfied by a simple method.

  According to the fifth aspect of the present invention, the circulation path of the conditioned air is formed in the non-residential space including the ceiling space and the underfloor space, and at least the indoor unit of the air conditioning unit is arranged in the circulation path, so that the conditioned air is circulated. Therefore, it is not necessary to provide a separate duct for air conditioning, and the air conditioning in the task area and the ambient area can be covered by one indoor unit, so that the system configuration can be simplified and the cost can be reduced.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a longitudinal sectional view of a floor of an office building showing a basic configuration of a task ambient air conditioning system according to the present invention. As shown in the figure, the floor is divided by a floor 1, a ceiling 2 and a side wall 3 of one floor of the office building. The room constitutes a living space where a person (employee) M works, and the other under-floor space S1 and the ceiling space S2 and the wall space S3 which is long in the vertical direction that connects both the spaces S1 and S2 are non-residential. It constitutes a space.

  Further, in the living space (indoor), a space (a space below the chain line in FIG. 1) in which a plurality of desks 4 and chairs 5 are installed on the floor 1 is about 2 m in height from the floor. The task area S where the trader M performs work is configured, and the space above and the space used as a passage in the task area S configure the ambient area.

  By the way, a plurality of air outlets (not shown) are opened at a predetermined position on the floor 1 (position close to the place where the desk 4 and the chair 5 are installed), and a plurality of fluorescent lights installed on the ceiling 2 are provided. A discharge port (not shown) is opened around the lighting device 6.

  The underfloor space S1, the ceiling space S2, and the wall space S3 communicating with each other constitute a circulation path through which conditioned air circulates, and the wall space S3 constitutes an indoor unit that forms part of the air conditioning unit. Specifically, a filter 7, an indoor heat exchanger (direct expansion coil unit) 8, a humidifier 9 and a fan 10 are installed. Although not shown, outdoor units such as a compressor and an outdoor heat exchanger constituting the remaining part of the air conditioning unit are installed outdoors, and the outdoor unit and the indoor heat exchanger 8 are connected by a refrigerant pipe. These constitute a closed loop for circulating the refrigerant.

  Further, blowout devices 11 are respectively installed on the lower surface of the floor 1 in the underfloor space S1 and at the blowout port portion opening in the floor 1. Here, the detail of a structure and effect | action of each blowing apparatus 11 is demonstrated based on FIGS.

  2 is a side view of the blowing device, FIG. 3 is a plan view of the blowing device, and FIG. 4 is a cross-sectional view of a fluid element module showing the basic configuration and operation of the blowing device.

  The blowing device 11 shown in FIGS. 2 and 3 is configured by installing a fan 14 rotated by a motor 13 and a fluid element module 15 as airflow switching means in a housing 12 having a substantially rectangular box shape. Here, an intake chamber Sa partitioned by partition walls 16 and 17 is formed in the upper half of the housing 12, and rectangular intake ports that open to the intake chamber Sa are formed on three side surfaces of the housing 12. Two 12a are formed. The fan 14 is attached to the partition wall 17 constituting the bottom surface of the intake chamber Sa, and the circular intake port 14a of the fan 14 opens into the intake chamber Sa.

  On the other hand, the fluid element module 15 switches the blowing direction of the conditioned air (supply air SA) blown out from the floor 1, and is shown in detail in FIG. The two chambers Sx and Sy defined by the opposing partition walls 19 and 20 are respectively formed, and pipes 21 and 22 are connected to the chambers Sx and Sy, respectively. That is, as shown in FIG. 3, the pipes 21 and 22 are connected to the short-side end face of the casing 18, and the other ends thereof are opened in the housing 12. It is selectively opened and closed by a valve 24 driven by 23. The solenoid 23 is controlled in its drive by the control means 25 shown in FIG. 4 to selectively open and close the pipes 21 and 22.

  As shown in detail in FIG. 4, a vertical passage 26 is formed by partition walls 19 and 20 in the center of the casing 18, and the upper end and lower end of the passage 26 are opened upward and downward, respectively. Tapered. And the upper end opening part 26a of the channel | path 26 is opened to living space through the blower outlet not shown formed in the floor 1, and the lower end opening part 26b is opened in the housing 12. FIG.

  Furthermore, outlets 27 and 28 that open to the passage 26 are formed in the opposing portions of the partition walls 19 and 20 in the casing 18, respectively.

  In the present embodiment, the fluid element module 15 includes a casing 18 having an elongated rectangular box shape. However, as shown in the perspective view of FIG. 5, the fluid element module includes a cylindrical casing 18 ′. 15 'may be used. Further, by changing the angles of the inclined surfaces 19a and 20a of the partition walls 19 and 20 of the fluid element module 15 shown in FIG.

  Next, the operation of the task air conditioning system configured as described above will be described with reference to FIGS. 6 is a timing chart showing the control of the blowing direction and the blowing time of the conditioned air (supply air SA), and FIG. 7 is a partial cross section showing the state of amplitude diffusion of the conditioned air (supply air SA) blown from the blowing device. FIG.

  When the air conditioning unit is driven during office hours, for example, in the summer, the indoor heat exchanger 8 installed in the wall space S2 functions as an evaporator, and the indoor heat exchanger 8 takes away the latent heat of evaporation of the refrigerant. The cooled and cooled air-conditioned air (supply air SA) flows through the underfloor space S <b> 1 in the direction of the arrow in FIG. 1 by the fan 10 and is introduced into each blowing device 11.

  In each blowing device 11, the fan 14 is rotationally driven by the motor 13, so that the supply air SA is transferred from the plurality of intake ports 12 a of the housing 12 to the intake chamber Sa as indicated by arrows in FIGS. 2 and 3. It flows in and is sucked into the fan 14 from the inlet 14a of the fan 14 that opens into the intake chamber Sa. Then, the supply air SA sucked into the fan 14 is discharged outward in the radial direction by the centrifugal force received from the rotating fan 14 and, as indicated by an arrow in FIG. 26b flows into the passage 26 and flows upward in the passage 26. At the same time, a part of the supply air SA flows from one open pipe (pipe 21 in the illustrated example) into one chamber (in the illustrated example, the chamber Sx). As in the illustrated example, the supply air SA that has flowed into the one chamber Sx from the one pipe 21 is discharged horizontally from the outlet 27 that opens to the partition wall 19 to the passage 26 (see FIG. 4).

  By the way, fluid such as air generally flows along the wall surface. However, as described above, when the supply air SA from one chamber Sx is discharged horizontally from the outlet 27, the supply air flowing upward in the passage 26 is supplied. The flow direction of the air SA is changed so as to flow along the inclined surface 20a of the other partition wall 20, and the other chamber Sy is maintained at a negative pressure by the dynamic pressure due to this flow. Therefore, the supply air SA blown from the upper end opening 26a of the fluid element module 15 is blown from the blowout port of the floor 1 toward the individual M in the task area S in the direction of arrow A in FIG. Keep a comfortable temperature space around the individual M.

  Next, when the solenoid 23 is driven by the control signal from the control means 25 and the one pipe 21 is closed by the valve 24 and the other pipe 22 is opened, a part of the air supply SA is transferred from the pipe 22 to the other. Into the chamber Sy and discharged horizontally from the outlet 28 formed in the partition wall 20 toward the passage 26 (see FIG. 4), and the flow direction of the supply air SA flowing upward in the passage 26 is changed, The supply air SA flows along the inclined surface 19 a of the partition wall 19. Therefore, the supply air SA blown out from the upper end opening 26a of the fluid element module 15 is blown out from the outlet of the floor 1 toward the ambient area other than the task area S in the direction of arrow B in FIG. The

  Therefore, in the fluid element module 15, the valve 24 driven by the solenoid 23 is alternately switched to alternately open and close the pipes 21 and 22, whereby the direction of air supply SA is directed toward the task area S and the other direction. Are alternately switched in the direction of the arrow B toward the ambient area, whereby the supply air SA is amplitude-spread in the task area S.

  The conditioned air supplied to the air conditioning in the task area S is heated by the OA device 29 (see FIG. 1) such as a personal computer and the heat from the individual M, etc., and rises in the living space. 1 is discharged from a discharge port (not shown) formed around the ceiling to the ceiling back space S2, flows in the direction of the arrow in FIG. 1 using the ceiling back space S2 as return air RA, is guided to the wall back space S3, and is installed there After being purified by passing through the filter 7, it is cooled again to a predetermined temperature by the indoor heat exchanger 8, sent to the underfloor space S <b> 1 by the fan 10 as the supply air SA, and is again returned to the task area S by each blowing device 11. It is blown out and the amplitude is diffused. Thereafter, the same operation is repeated, and the task area S is air-conditioned by the supply air SA diffused in amplitude.

  By the way, in the task ambient air conditioning system according to the present embodiment, the time for blowing the supply air SA toward the task area S and the time for blowing it toward the other ambient areas by the fluid particle module 15 of the blowing device 11 is controlled. Thus, the temperature of the task area S, particularly the individual M is adjusted. That is, as shown in FIG. 6, when the cycle of switching the blowing direction of the supply air SA is made constant, the ratio of the time of blowing toward the individual M in the cycle is adjusted according to the request of the individual M. , I am trying to adjust the strength of the cooling (individual temperature). Specifically, as shown in FIG. 6, as the cooling is adjusted from “weak” to “medium” to “strong”, the ratio of the time for blowing the supply air SA toward the individual M is increased. Note that the cooling adjustment method is not limited to a stepwise adjustment from “weak” to “medium” to “strong”, but adopts a stepless adjustment method in the range of “weak” to “strong”. Can do.

  Thus, in the present embodiment, the air supply SA is not adjusted without adjusting the blowing area of the fluid element module 15 of the blowing device 11, that is, without reducing the area of the upper end opening 26a of the fluid element module 15. The temperature of the task area S is adjusted by adjusting the time to blow out toward the individual M while keeping the blowout flow rate constant, so that the supply air SA reaches the individual M sufficiently and the comfort of the individual M in the task area S The air conditioner can be air-conditioned at the same time.

  Incidentally, the adjustment of the strength of the cooling, that is, the time for blowing out the supply air SA toward the individual M, changes the set value stored in the control means 25 by the remote operation by the wireless remote controller 30 (see FIGS. 1 and 4). It is made easy by doing.

  On the other hand, during the heating operation in winter, the indoor heat exchanger 8 installed in the wall space S3 functions as a condenser, and the indoor heat exchanger 8 is conditioned air having a high temperature heated by the latent heat of condensation of the refrigerant ( The supply air SA) flows in the underfloor space S1 in the direction of the arrow in FIG. 1 by the fan 10 and is blown out from each blowing device 11 to the task area S. In this case as well, the fluid element module 15 of each blowing device 11 The blowing direction of the supply air SA is switched alternately, and the temperature characteristic of the individual M in the task area S is improved by adjusting the time for blowing the supply air SA toward the individual M, and the comfort of the individual M is improved. In addition to satisfying the requirements sufficiently, ambient air conditioning can be performed at the same time. Specifically, as shown in FIG. 6, as the heating is adjusted from “weak” to “medium” to “strong”, the ratio of the time for blowing the supply air SA toward the individual M is adjusted to increase. . Note that the heating adjustment method is not limited to a stepwise adjustment from “weak” to “medium” to “strong”, but a stepless adjustment method in the range of “weak” to “strong” should be adopted. Can do.

  In addition, only the fan 10 is driven at a time when air conditioning is not required, ventilation is performed by outside air, and the humidity of the air is adjusted by the humidifier 9 as necessary.

  Thus, according to the task ambient air conditioning system according to the present embodiment, the temperature characteristics of the individual M in the task area S can be improved and the ambient area can be air-conditioned at the same time as described above. In addition to satisfying the comfort requirements, the air blower 11 is not provided with a movable part for turning the conditioned air (supply air SA), so the structure is simplified and the cost is reduced. In addition, the occurrence of a failure due to adhesion of dust or the like is suppressed, and cleaning is facilitated.

  Further, in the present embodiment, a circulation path of conditioned air is formed by the underfloor space S1, the ceiling behind space S2, and the wall behind space S3, and a part of the air conditioning unit is formed in the wall behind space S3 which is a part of the circulation path. Since the indoor unit (filter 7, indoor heat exchanger 8, humidifier 9 and fan 10) that constitutes the air conditioner is installed, there is no need to provide a separate duct for circulating the conditioned air, and the task can be performed with one indoor unit. The air conditioning in the area S and the ambient area can be covered, and the system configuration can be simplified and the cost can be reduced. The air conditioning unit is not limited to the direct expansion system used in the present embodiment, and an air conditioning system using a cold / hot water coil can also be used.

  By the way, in this Embodiment, although the fluid element module 15 was used as an airflow switching means provided in the blowing apparatus 11, you may use the damper unit 31 as shown in FIG. 8 as an airflow switching means. 8 is a longitudinal sectional view of the damper unit. In the damper unit 31 shown in the figure, a damper 34 is rotatably provided in a passage 33 formed in the casing 32. By rotating in the direction, the blowing direction of the supply air SA flowing upward in the passage 33 can be switched. The driving is controlled by the motor 35 wave control means 25, and the adjustment of the time for blowing the supply air SA toward the individual (that is, adjustment of the switching timing of the damper 34) is performed by the control means 25 by remote operation by the wireless remote controller 30. This is easily done by changing the stored setting values.

  In addition, when the pressure of the indoor unit fan 10 is sufficiently high and the airflow reaches all corners of the living space, it is not necessary to provide the fan 14 in the blowing device 11, and only the fluid element module 15 and the damper unit 31 blow out. The device 11 can be configured.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a general task ambient air conditioning system that air-conditions a task area and an ambient area in a room by a floor blowing method.

It is a floor longitudinal section of an office building showing the basic composition of the task ambient air-conditioning system concerning the present invention. It is a side view of the blowing apparatus used for the task ambient air-conditioning system concerning the present invention. It is a top view of the blowing apparatus used for the task ambient air-conditioning system concerning the present invention. It is sectional drawing of the fluid element module which shows the basic composition and effect | action of the blowing apparatus used for the task ambient air-conditioning system which concerns on this invention. It is a perspective view of the fluid element module which concerns on another form. It is a timing chart which shows control of the blowing direction and blowing time of conditioned air (supply air SA). It is a fragmentary sectional view which shows the mode of amplitude diffusion of the conditioned air (supply air SA) which blows off from a blowing apparatus in the task ambient air-conditioning system which concerns on this invention. It is sectional drawing which shows the basic composition and effect | action of a damper unit used for the blowing apparatus which concerns on another form. It is a fragmentary sectional view which shows the mode of the swirl | vortex flow of the conditioned air (supply air SA) which blows off from a blowing device in the conventional task ambient air-conditioning system. It is a fragmentary sectional view which shows the mode of the whirling flow of the conditioned air (supply air SA) which blows off from a blowing apparatus in the conventional task ambient air-conditioning system, and a personal blower outlet.

Explanation of symbols

1 Floor 2 Ceiling 3 Side Wall 7 Filter 8 Indoor Heat Exchanger 9 Humidifier 10 Fan 11 Blowout Device (Blowout Means)
13 Motor 14 Fan 15 Fluid element module (Airflow switching means)
23 Solenoid 24 Valve 25 Control means 26 Passage 30 Wireless remote control 31 Damper unit (Airflow switching means)
33 Passage 34 Damper 35 Motor A Flow direction of air supply toward individual B Flow direction of supply air toward common area M Individual (employee)
S Task area S1 Floor space S2 Ceiling space S3 Wall space SA Air supply RA Return air

Claims (5)

In the task ambient air conditioning system that air-conditions the indoor task area with the conditioned air blown out from the outlet opening in the floor,
Blowing means for changing the blowing direction of the conditioned air blown out from the blowout opening and diffusing the conditioned air in amplitude is provided in the blowout opening portion of the underfloor space, and the blowing means directs the conditioned air toward the task area at a constant flow rate. A task ambient air conditioning system characterized in that the temperature of the task area is adjusted by controlling the time to blow out and the time to blow toward the other ambient area.   2. A task ambient air conditioning system according to claim 1, wherein said blowing means is provided with a fluid element module as an airflow switching means.   2. The task ambient air conditioning system according to claim 1, wherein a damper unit is provided as an air flow switching means in the blowing means.   The task ambient air conditioning system according to any one of claims 1 to 3, wherein a blow time of the conditioned air by the blowing means is controlled by a remote operation by a wireless remote controller.   The air conditioning air circulation path is formed in a non-residential space including a ceiling space and an underfloor space, and at least an indoor unit of the air conditioning unit is disposed in the circulation path. Task ambient air conditioning system.

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