JPH0586204B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a multifunctional desk in which air conditioning and power supply are individually installed in a building.

[Prior Art and Problems to be Solved by the Invention] Generally, air conditioning systems in buildings include a duct placed between a slab and a ceiling board, and indoor air is exhausted through this duct and sent to an air conditioning unit. Along with this, conditioned air is also supplied into the room through similar ducts. Furthermore, the lighting inside the building has lighting fixtures on the ceiling surface so that all the lighting fixtures in the room can be turned on and off at the same time or in groups.

For this reason, even if only a portion of the room is used, air conditioning and lighting must be provided over a wide area, which is contrary to energy conservation.

Here, the present applicant has proposed an air conditioning system that provides an air supply path under the floor to simplify construction work and is suitable for energy saving (Japanese Patent Laid-Open No. 131251/1982).

Taking the above facts into consideration, the present invention can achieve energy saving effects by supplying, discharging and illuminating conditioned air only to desired locations from under the floor, and also reduces unnecessary power consumption when employees are away from their seats. The purpose is to obtain a multi-functional desk that can prevent such problems.

[Means and effects for solving the problems] The multifunctional desk according to the present invention is installed on the floor, and has an air supply path and an air exhaust path that communicate with the interior of the room and the duct of the air conditioner installed under the floor. a desk body equipped with a desk body; a power consumption load portion provided on the desk body and including at least a lighting fixture; and an air blowing switching means that blows air downwardly when the air conditioner is heating the desk body, and blows air upwardly when cooling the desk body;
A presence/absence detection means for detecting the presence or absence of an office worker, an air temperature detection means for detecting the air temperature from the air conditioner, and a signal from the air temperature detection means to control the air temperature. When the air temperature control means and the presence/absence detection means detect that the office worker is present, the lighting equipment is turned on, and when it is detected that the office worker is away from the office, the lighting equipment is turned off. and lighting control means for controlling the illumination.

Therefore, by placing this equipment unit on the desired floor and connecting it to the underfloor area, air conditioning and lighting can be provided only in the desired location according to the layout.
It is now possible to improve energy saving effects.

[Example] FIGS. 1 and 2 show a multifunctional desk 10 according to this example.

This multifunctional desk 10 is composed of a unit type floor plate 16 placed on a concrete slab 12 via legs 14, and a desk body 18.

The upper end of the desk body 18 has a ceiling surface 20 in the room.
An ambient light 24 is provided facing in the direction, and can illuminate the ceiling surface 20.

Further, from the cylindrical outer frame of the ambient light 24, the arm 2 of the task light 26 can illuminate the desk main body 18 in the radial direction.
8 is extended to perform task lighting that illuminates only the hand of the worker 30 who is working at the desk body 18.

A drawer portion 31 is provided on the right side of the desk body 18, and a telephone unit 22 is installed above the drawer portion 31. This telephone unit 22 is normally housed between the desk stand 18A and the drawer section 31. Here, as shown by the chain line in FIG. 4, when the telephone unit 22 is in use, it can be pulled out toward the front.

The telephone unit 22 is equipped with a power switch for the ambient light 24 and the task light 26, and is also equipped with a main switch for an air conditioner 42 (see FIG. 1), which will be described later.

As shown in FIG. 3, inside the desk main body 18 are first and second ducts 3 communicating with the underfloor.
2, 34 are arranged, and these two ducts 32, 3
The upper end openings of 4 communicate with a first chamber 36 provided at the upper end of the desk body 18, respectively. The first chamber 36 is formed with an air flow port 38 that communicates with the interior of the room. Air flow port 3
Reference numeral 8 is an inlet for sucking indoor air when the air conditioner 42 installed under the floor is heating the room, and is an outlet for blowing cold air into the room when cooling the room. A plurality of fins 40 are disposed in parallel with each other in the air flow opening 38, and are rotatable on an axis, so that the direction in which cold air is blown out during cooling can be changed.

The air conditioner 42 includes a blower 44 and a second chamber 4.
6, and air can be sent into the second chamber 46 by driving a motor 48 attached to the blower 44.

The suction side duct 50 of the blower 44 includes a duct main body 52 that is piped inside the building, and the first duct 3.
2 is in communication with the lower end opening.

Further, a lower end portion of the second duct 34 is attached to a second chamber 46 that communicates with the air blowing side duct 54 of the blower 44 and communicates with the second chamber 46 . Here, the air that has flowed in through the filter 56 and has been heat exchanged by the heat exchanger 58 passes through this second duct 34 and reaches the room. Further, a drain pipe 58A is extended from the heat exchanger 58 to drain water in a timely manner.

A third chamber 64 is spanned between the longitudinal intermediate portions of the first duct 32 and the second duct 34 via branch pipes 60 and 62, respectively. An air flow opening 66 is formed in the third chamber 64, and a fin 68 is attached thereto similarly to the first chamber 36. This air vent 66 is connected to the office 30.
It corresponds to the feet when seated.

A motor damper 82 is installed in each of the branch pipes 60 and 62.
A, 82B are attached, and signal lines 84A, 84B for driving them are wired to a control panel 100 installed under the floor (the intermediate part of the signal lines is not shown).

Moreover, this first duct 32 and the second duct 3
4, a fourth chamber 75 is attached via branch pipes 72 and 74 to corresponding locations on the table stand 18A of the desk main body 18, and a housing section for a television monitor 76 (see FIG. 2). It is said to be 78. Furthermore, a fluorescent lamp ballast 80 applied to the ambient light 24 and the task light 26 is disposed within the fourth chamber 75. As a result, the television monitor 76 and the fluorescent lamp ballast 8
The heat emitted from 0 is not released into the room.

Motor dampers 82C and 82D are attached to the branch pipes 72 and 74 that communicate the fourth chamber 75 and the first and second ducts 32 and 34, respectively, and the signal lines 84C and 84D are wired to the control panel 100. has been done.

Also, between the branch pipe 72 and the first chamber 36 in the first duct 32, between the branch pipe 74 and the first chamber 36 in the second duct 34, and between the branch pipe 62 in the second duct 34. Motor dampers 82E, 82F, 8 are also provided between the branch pipe 74 and the branch pipe 74, respectively.
2G is installed, and its signal lines 84E, 84
F and 84G are also wired to the control panel 100.
Furthermore, the duct body 52 also has a motor damper 82H.
are installed, and these are opened and closed by the heating operation or cooling operation by the air conditioner 42, so that the flow of air can be changed.

Here, the signal lines 84A to 84H of the motor dampers 82A to 82H are connected to a microcomputer installed inside the control panel 100 via a relay circuit (both not shown). The power line 118 of the motor 48 attached to the blower 44 is also connected to this microcomputer via a relay circuit (not shown), and the power lines 122 and 124 that supply power to the ambient light 24 and task light 26 are also connected via the power switch. connected. Furthermore, this microcomputer includes a temperature sensor 120 that detects the temperature in the room, and a presence/absence detection sensor 1 that detects the presence or absence of an office worker 30.
21 signal lines 125, 126 are connected,
The air conditioner 42 is activated by the signal from the temperature sensor 120.
The motor dampers 82A to 82H are opened and closed, and warm air is blown out from the air circulation opening 66 of the third chamber 64 during heating, and the air circulation through the first chamber 36 is blown out during cooling. Cold air is blown out from the port 38.

Further, the presence/absence detection sensor 121 is configured to stop the operation of the air conditioner 42 and cut off the power supply to the task light 26 when the office worker 30 is away from the seat.

The operation of this embodiment will be explained below.

When the office worker 30 starts working, after sitting down, the office worker 30 pulls out the telephone unit 22 as shown by the chain line in FIG. do.

As a result, the ambient light 24 can illuminate the ceiling surface 2 in the vicinity of the desk body 18 where the worker 30 is sitting, and the task light 26 can also perform task lighting in which the worker 30's hands are illuminated. Ru.

Here, when the office worker 30 leaves the seat, the presence/absence detection sensor 121 detects this, and the task light 26 detects this.
It is possible to cut off the power supply to the device and prevent unnecessary power consumption.

Furthermore, since the room temperature is measured by the temperature sensor 120 and input to the microcomputer at any time, the air conditioner 42 is automatically controlled to maintain the appropriate temperature.

Here, when raising the room temperature, the microcomputer performs heating control. In this case, the opening and closing of the motor dampers 82A to 82H are controlled as described below (see FIG. 5).

Motor damper 82A - Closed motor damper 82B - Open motor damper 82C - Open motor damper 82D - Open motor damper 82E - Open motor damper 82F - Open motor damper 82G - Closed motor damper 82H - Open.
The air is sent from the air flow opening 38 to the first duct 32 directly or through the second duct 34 and the fourth chamber 75 to the blower 44, and is sent to the second chamber 46 together with the air sent from the duct body 52. Heat exchange takes place.

The heated air can be blown out from the air flow opening 66 of the third chamber 64 to the feet of the office worker 30, thereby heating the office worker 30.

Next, the case of cooling control of the air conditioner 42 will be explained. In this case, the motor dampers 82A to 82H are controlled as follows (see FIG. 6).

Motor damper 82A - Open motor damper 82B - Closed motor damper 82C - Open motor damper 82D - Open motor damper 82E - Closed motor damper 82F - Open motor damper 82G - Open motor damper 82H - Open.
The air flows into the first duct 32 through the air flow opening 66, reaches the blower 44, and is sent together with the air from the duct body 52 to the second chamber 46 for heat exchange. The heat-exchanged cold air is guided to the second duct 34 and blown into the room from the air flow opening 38 of the first chamber 36, thereby making it possible to lower the temperature in the room. Here, a part of the cold air in the second duct 34 is branched to a fourth chamber 75, and inside the fourth chamber 75, a television monitor 76 and a fluorescent lamp ballast 80 are installed.
It is possible to lower the temperature of the hot air generated by the This air is guided into the first duct 32 and joins the air from the third chamber 64, so that it does not flow into the room.

Motor damper 82C, 82D, 82F, 82H
is said to be open at all times for both cooling and heating, but
By adjusting the opening degree of this, the air volume can be adjusted.

In this embodiment configured as described above, by installing the desk main body 18 on the bottom plate 16 at a desired position, the adjusted air is transferred from under the floor to the first and second ducts 32, as shown in FIG. 34, and the power can be supplied via the signal lines 122, 12.
4 to ambient light 24 and task light 26. Therefore, air conditioning and lighting can be provided only in the vicinity of the work position of the office worker 30, and these are not supplied to unnecessary parts of the room, making it possible to significantly save energy. Also, when constructing a building, all air conditioning units and wiring can be placed under the floor.
It is possible to eliminate the complicated construction work in the ceiling, and also to eliminate the wiring on the floor, so the construction work is simple and the finish is smooth.

In this embodiment, the power consumption load components are the telephone unit 22, the ambient light 24, the task light 26, and the television monitor 76, but they are not limited to these, and may be suitable for off-eas workers such as OA equipment and audio equipment. It is possible to incorporate other power consuming components to ensure the working environment. Further, in this embodiment, the first and second ducts 32, 3
4 was explained as being separate from the desk body 18,
It is also possible to integrally form it using synthetic resin such as FRP.

[Effects of the Invention] As explained above, the multifunctional desk according to the present invention is installed on the floor and is equipped with an air supply path and an air exhaust path that communicate with the interior of the room and the duct of the air conditioning equipment installed under the floor. A desk main body, a power consumption load component provided on the desk main body and including at least a lighting fixture, an air blowing switching means for blowing air downward from the desk main body when heating the air conditioner and upward when cooling the desk body, and a seat for an office worker. and a presence/absence detection means for detecting an unoccupied state; an air temperature detection means for detecting the air temperature from the air conditioner; and an air temperature control means for controlling the air temperature using a signal from the air temperature detection means. , lighting control means for turning on the lighting equipment when the presence/absence detection means detects that the office worker is present, and turning off the lighting equipment when it is detected that the office worker is absent from the office; ,
This makes it possible to achieve energy saving effects by supplying, discharging, and lighting conditioned air only to desired locations from under the floor, and also to prevent unnecessary power consumption when employees are away from their seats. It has this excellent effect.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the multi-functional desk according to the present invention, Fig. 2 is a perspective view of the desk main body according to the present embodiment, and Fig. 3 shows the internal structure of the multi-functional desk according to the present embodiment. The perspective view shown in Fig. 4 is - of Fig. 2.
A line sectional view, FIG. 5 is a piping diagram showing the flow of air during heating, and FIG. 6 is a piping diagram showing the flow of air during cooling. 10... Multifunctional desk, 18... Desk body,
24...Ambient light, 26...Task light, 30...Office worker, 32...First duct,
34...Second duct, 42...Air conditioner, 82
A~82H...Motor damper.

Claims (1)

[Scope of Claims] 1. A desk main body installed on the floor and provided with an air supply path and an air exhaust path that communicate with the room and a duct of an air conditioner installed under the floor; A power consumption load component including a lighting fixture, a ventilation switching means that blows air downwards when the air conditioner is heating the desk body and upwards when cooling the desk body, and an occupancy/displacement device that detects the presence or absence of an office worker. A seat detection means, a blowing temperature detecting means for detecting the blowing temperature from the air conditioner, a blowing temperature controlling means for controlling the blowing temperature by a signal from the blowing temperature detecting means, and the presence/absence detecting means. lighting control means that turns on the lighting equipment when it is detected that the person is present and turns off the lighting equipment when it is detected that the person is away from the seat;
A multifunctional desk with 2. Claim 1, characterized in that the lighting equipment is an ambient light disposed upward toward the top of the unit body, and a task light disposed toward the top of the desk body.
Multifunctional desk as described in section.