JPH02122144A - Airconditioning method and diffuser device therefor - Google Patents

Abstract

PURPOSE:To make it possible to select the optimum blowout direction and blowout velocity against heat load and hence carry out energy saving operation by making variable an air capacity sent from an airconditioner into a diffuser during both cooling and heating, allowing the air capacity to follow with a differential temperature between indoor and outdoor temperatures. CONSTITUTION:A conditioned air diffuser 31 forms a ring-shaped blowout passage 35 on the outside of a center corn 33. In the case of cooling mode, a mode, a mode discrimination means 61a detects its mode, transmits it to a control means 63, presets an indoor temperature at 25 deg.C, and stores the data in a memory means so that supply air may be controlled with a minimum air capacity in which a damper 35a is full open while a damper 34a is full closed. Then, a temperature comparison means 64 compares indoor temperature data constantly read in from an indoor detection means 62 with a preset temperature. When the indoor temperature is higher than the preset temperature, a lower temperature air is supplied. When the indoor temperature is lower, a cooled water supply volume is reduced. In heating mode, when the indoor temperature is lower than the preset temperature, a higher temperature air is supplied. When it is higher, a flow rate of hot water or steam is reduced so that the air may be supplied, responding with the room temperature.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides an air conditioning method for controlling the direction and speed of airflow from an outlet in order to save energy and provide comfort to occupants during indoor air conditioning. and an air outlet device used therefor.

[Conventional technology]

Japanese Patent Laid-Open No. 60-2489.38 is already known as a method for saving energy in indoor air conditioning. This is a variable air volume (VAV) system in which the air supply temperature is optimized by changing the target temperature set value when the detected air supply amount is less than a predetermined amount. In this VAV system, a VAV unit equipped with a throttle damper is inserted in the middle of a ventilation duct, and the amount of throttle by the throttle damper is controlled according to the temperature of the room to be air-conditioned to control the air volume.

However, this VAV system has a problem in that occupant comfort is impaired when the air volume is low.

In other words, as schematically shown in Figure 12, during heating, warm air stagnates near the ceiling, as shown by the solid line, and during cooling, the cold air is not sufficiently diffused and falls near the outlet, as shown by the broken line. Even after optimizing the air temperature, the occupants did not receive a sufficient experience. In an attempt to solve this problem, a blower outlet described in Japanese Utility Model Application Publication No. 146246/1988 is known. As shown in FIG. 13, a center cone 15 arranged at the center of the outlet body 14 is configured to be able to rise and fall freely, and the center cone 15 detects the temperature of the room and adjusts the temperature accordingly. A heat-sensitive driving device 16 is installed to raise and lower the center cone 15 accordingly, and a heat-sensitive reversing device detects the cooling/heating mote from the air blowing temperature in the duct 17 and reverses the raising and lowering of the center cone 15 based on the detection. 18.

[Problem that the invention seeks to solve]

However, even if such an air outlet is adopted, the air blowing direction is restricted by the movement width of the center cone, resulting in a small control range, and the variable air volume, which is a feature of the VAV sostem, cannot be fully utilized.

In other words, in heating mode, the cone is raised to send air downward, and in cooling mode, the cone is lowered to diffuse the airflow. When the temperature is high,
Since the air volume increases in each case, the conditioned air supplied with this large air volume has the problem of the Suita wind speed becoming too high due to the restriction on the opening area of the outlet, causing a draft feeling to the occupants and causing pressure loss. there were.

In order to solve these problems, the present invention follows the indoor temperature situation with good responsiveness, selects the optimal blowing direction and Suita wind speed for the heat load in each cooling and heating mode, and operates in a power-saving manner. The problem to be solved is to

Another object of the present invention is to provide a blower outlet device suitable for solving the above-mentioned problems.

[Means to solve the problem]

In order to solve the above problems, the present invention has the following configuration.

In the air conditioning method of the present invention, an anemo-shaped outlet 31 consisting of a central outlet 34 and an annular outlet 35 surrounding the central outlet 34 is provided in the ceiling of the room to be air-conditioned,
In the air blowing method in which the air blowing passage 35 is opened and closed according to the cooling or heating mode of the air conditioner 51, the annular blowing passage 35 is fully opened during cooling, and the central blowing passage is made to follow the difference between the set temperature and the indoor temperature. 34 is made variable, the central outlet passage 34 is fully opened during heating, the opening degree of the annular outlet passage 35 is made variable to follow the difference between the set temperature and the room temperature, and the opening degree of the annular outlet passage 35 is made variable during cooling and heating. At this time, the amount of air supplied from the air conditioner 51 to the outlet was made variable to follow the difference between the set temperature and the room temperature.

The outlet device used in the method of the present invention has a central outlet passage 34 defined inside a cylindrical cone 33 whose lower edge widens outward, and an annular outlet passage 35 surrounding the central outlet passage 34. each outlet passage 34.35 is provided with a plurality of damper groups 34a, 35a, and a drive shaft 39 for driving the damper groups 34a, 35a is provided inside and outside the outlet 31, On the other hand, it is preferable to use a device in which a motor 47 that rotates in response to a control signal is installed outside the air outlet, and the movement of the motor 47 is transmitted to the drive shaft 39 via a link mechanism 40.

The air outlet 31 of the present invention has dampers 34a and 35a that can be opened and closed.
Therefore, it is equipped with a wind control mechanism equivalent to a conventional VAV unit.

As an air conditioning system for carrying out the method of the present invention, the above-mentioned anemo type air outlet 31 is used as the air conditioned air outlet 31.
An air conditioner 51 is connected to this outlet 31 via a duct, and it is also possible to check whether the air conditioner 51 is operating in a cooling or heating mode, the degree of opening of the dampers 34a and 35a, and the condition of the room to be air-conditioned. A control device 63 is provided that controls the blowing direction and blowing wind speed using temperature and the like as parameters.

During cooling, the damper control means 65 fully opens the damper 35a and fully closes the damper 34a as a basic mode. As a result, the cold air flows near the ceiling, spreads evenly throughout the room, and then descends. When the indoor temperature becomes higher than the preset temperature due to a change in the indoor load, the damper 34a is opened and the degree of opening is adjusted according to the difference between the set temperature and the indoor temperature. , during heating, the damper 34a is fully opened as the basic mode,
The damper 35a is fully closed. As a result, the warm air is blown out toward the floor and then rises. 7. When the indoor temperature becomes lower than the set temperature due to a change in the indoor load, the damper 35a of the annular outlet passage 35 is opened and its opening degree is adjusted according to the difference between the set temperature and the indoor temperature. It is composed of:

Here, in addition to the opening/closing control of the dampers 34a and 35a, the air supply amount is also controlled, that is, the air is controlled to be supplied to the anemo-shaped outlet 3J in a manner commensurate with the damper opening degree. For example, in a facility having an air conditioner 51 equipped with a fan 54 driven by an inverter 53, the frequency of the inverter 53 is made variable based on the difference between the above-mentioned set temperature and the indoor temperature.

[Effect]

During cooling operation, the damper 34a is fully closed and the damper 35a is fully opened as a basic mode. The air supply here (operation with an air supply amount commensurate with the area of the J damper 35a, that is, the minimum air volume operation mode is performed.The cooling operation is controlled so that the indoor temperature reaches a preset temperature. When the indoor temperature becomes higher than the set temperature due to a change in the indoor load, the damper 34a, which had been in a fully closed state, is opened and its opening degree is controlled according to the difference between the indoor temperature and the set temperature.

In this way, the amount of cold air in the annular blow-off passage 35 becomes almost constant, is guided outward by the cone 33, the blow-out direction is horizontal, and the blow-off speed is suitable, so that the cold air is evenly diffused into the room.

Also, during heating operation, the damper 34
It is assumed that a is fully open and the damper 35a is fully closed. The air supply here is performed with an amount of air supplied corresponding to the area of the damper 34a, that is, in the minimum air volume operation mode. Heating operation is also controlled so that the indoor temperature reaches a preset temperature, but if the indoor temperature rises higher than the set temperature due to fluctuations in the indoor load, the damper 35a, which had been fully closed, is opened and the damper 35a is opened. The temperature is controlled according to the difference between the indoor temperature and the set temperature.

In this way, the amount of warm air in the central blowout passage 34 is approximately constant, the blowing direction is directly downward, and the blowing speed is suitable, so the warm air is blown directly downward and then rises and diffuses into the room. Therefore, warm air does not stay near the ceiling like in the past.

In addition, in order to obtain the above-mentioned good airflow distribution indoors, the supply air volume is made variable to follow the difference from the set temperature, so all you need to do is supply enough air to match the indoor load, which saves energy in fan power. Contribute.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

<Example 1> Examples of the outlet device used in the method of the present invention are shown in Figures 1 to 4.
This will be explained using figures.

The conditioned air outlet 31 has one cylindrical center cone 33 whose lower end edge widens outward in the outlet main body 32 which has a circular opening in the shape of a rectangular lower surface. A central outlet passage 34 is defined inside the center cone 33, and an annular outlet passage 35 is formed outside the center cone 33 surrounding the central outlet passage 34.

Further, dampers 34a and 35 are provided at the rabbet-shaped base of each outlet passage 34.35 to open and close each outlet passage 34.35.
A plurality of a are provided in each outlet passage 34 and 35, respectively. The damper groups 34a and 35a of the central outlet passage 34 are each fan-shaped plates, and are formed to have a circular shape as a whole, corresponding to the central outlet passage 34 having a circular cross section when fully closed. The damper group 34a35a is also a sector-shaped plate, and is formed to have an annular shape as a whole, corresponding to the annular blowout passage 35 having an annular cross section when fully closed.

In each damper group 34a, 35a, one of the dampers 34a, 35a constituting the damper group 34a, 35a is
Each sheet has a rotation shaft 36 that forms the center line of the fan-shaped damper, and is rotatably supported by the main body of the air outlet 31 by this rotation shaft 36. One damper group 34a is attached to the drive shaft 39. In this example, the damper 34a' on the side of the link mechanism 40, which will be described later, corresponds to the damper 34a'. This damper 34a and the other damper group 34a are connected by a connecting rod 37 via a connector. Also, a damper group 35a that opens and closes the annular outlet passage 35
One of the dampers is attached to the drive shaft 38 and connected to the other damper group 35a by a connecting rod 37. The connection state between the damper groups 34a and 35a by the connecting rod 37 is as follows.
As shown in Fig. 4, each damper 3 is connected to one adjacent damper 3.
4a, the other damper 34 adjacent to one end of the surface of 35a
The dampers 34a and 35a are sequentially connected to the other ends of the back surfaces of the dampers 37 and 35a by connecting rods 37 and 37, both ends of which are rotatably supported. They are designed to open and close in sync. That is, the drive shaft 38.
One damper 34a 35a attached to 39 rotates, and as a result, the adjacent damper 34a is moved from the connecting rod 37.37.
, 35a, the kinetic force is transmitted to the connectors of the dampers to rotate the dampers and sequentially transmit the motion.

The drive shaft 38 that rotates one damper 35a of the damper group 35a of the annular outlet passage 35 is a hollow tube, and its tip protrudes outside the outlet 31, and the other end is inside the cone 33. Close to the tube. Further, a drive shaft 39 for rotating one damper 34a of the damper group 34a of the central outlet passage 34 passes through the tubular shaft 38, and its tip protrudes outside the outlet 31, and the other end is a cone. Penetrates 33.

A link mechanism 40 is provided at the tip of each shaft 3g, 39, and each link mechanism 40 rotates each shaft 38, 39 to open and close each damper 34a, 35a.

To explain each link mechanism 40, each link mechanism 4
0 is an interlocking shaft 4 fixed to the tip of an arm 41 attached to the tip of each shaft 3g and 39 with a boulder 42 so that the axial direction thereof faces up and down and can move forward and backward only in the axial direction.
3 are each pivotally supported, and a cam pin 44 is provided protruding from the other end of each interlocking shaft 43. A cam disk 45 is provided above each interlocking shaft 43,
Each of the cam pins 44 can slide within a cam groove 46 provided in a rotatable cam disk 45. and,
Each cam disk 45 is fixed to the shaft of a motor 47 and is rotationally driven. The cam groove 46 is shaped like an arc around the outer periphery of the disc, then heads toward the center of the disc 45 from the end of the arc, makes a U-turn at the center of the disc 45, and returns to the starting end of the arc. 45, the cam pin 44 slides within the cam groove 46, causing the interlocking shaft 43 to advance and retreat in the vertical direction.
839 rotates 90 degrees, and the dampers 34a and 35a open and close. The cam grooves 46 of the two cam disks 45 are positioned 90 degrees apart from each other. In addition,
A rotary encoder 48 is attached to the motor 47, and the rotation angle thereof is detected and inputted to the control device 63 so that the opening angle of the dampers 34a and 35a can be specified.

The above is an example of the air-conditioned air outlet 31 used in the method of the present invention, but the opening/closing mechanism of the central outlet passage and the annular outlet passage may be modified as appropriate, such as by using a sliding shutter. As shown in FIG. 6, a plurality of conditioned air outlets 31 are arranged on the ceiling of a room to be air-conditioned, and each of them is connected to an air conditioner 51 via a duct. Furthermore, the room to be air-conditioned is one large room. The air conditioner 51 sucks indoor air to be conditioned and outside air, and after conditioning the air, supplies the conditioned air into the room from each air conditioned air outlet 31, and also serves as a cooling coil and a heating coil. The fan 54 is provided with an air conditioning coil 52 and a fan 54 whose rotation speed is controlled by an inverter 53. The air conditioning coil 52 operates as a cooling coil in the summer when cold water is passed through the flow control valve 55, and operates as a heating coil in the winter when hot water or steam is passed through the flow control valve 55.

Note that the coil 52 may be provided with a cooling coil and a heating coil, respectively. The flow rate adjustment valve 55 of the coil 52 is the valve 5.
5 is fully open, and a fully open signal can be sent to the control device 63.

In addition, a temperature detection means 61 for detecting cooling/heating for detecting the cooling/heating mode of the air conditioner 51 is installed in the duct connecting the air conditioner 51 and the conditioned air outlet 31. Indoor temperature detection means 62 for detecting this indoor temperature
The nib is set.

Further, in response to temperature data from the cooling/heating detection temperature detection means 6j and the indoor temperature detection means 62, damper opening information from the encoder 48, and a full open signal from the outflow control valve 55, the fan 54 of the air conditioner 51 is controlled. A control device 63 that controls the rotation speed and opening/closing of the dampers 34a and 35a.
is provided.

This control device 63 includes a mode determining means 6 that determines whether the air conditioner 51 is performing a cooling operation or a heating operation from temperature data from a temperature detecting means 61 for cooling/heating detection.
], a. Note that the mode may be determined manually.

The control device 63 also includes a temperature comparing means 64 that compares the indoor temperature data from the indoor temperature detecting means 62 with a preset temperature, and water flow through the coil of the air conditioner based on the comparison result of the temperature comparing means 64. - Flow rate adjustment valve control means 667 for controlling the ventilation amount; damper control means 65 for controlling the opening and closing of the dampers 34a and 35a based on the comparison result of the temperature comparison means 64 and the opening degree information (fully open information) of the flow rate valve 55; It has an inverter frequency control means 68 that controls the amount of air blown from the air conditioner 51 based on the damper opening degree information from the encoder 48. Each of these means 64, 65
, 66, and 68 are not necessarily provided, and the others other than the temperature comparison means 64 and the damper control means 65 may be provided as appropriate.

Next, an example of the operation of this embodiment will be explained based on the flow chart of FIG. 7 and the time chart of FIG. 9.

First, the summer cooling mode will be explained. The mode determining means 61a detects that the air conditioner is operating in the cooling mode,
This is communicated to the control device 63 (step 1).

Here, the indoor temperature to be air-conditioned is set in advance to 25°C.

This is input as the set temperature from the input means and stored in the storage means. Then, the damper 35a is fully opened, and the damper 34
a When the flow rate adjustment valve 5 is fully closed and the minimum air volume operation (mode 5) is
Control the supply air temperature according to Step 5 (Step 2).

Next, the temperature comparing means 64 compares the indoor temperature data constantly read from the indoor temperature detecting means 62 with the set temperature (step 3), and the flow rate control valve provided in the coil 52 of the air conditioner 53 is fully opened in the minimum air volume operation. If the indoor temperature is higher than the set temperature, the controller 63 increases the opening degree of the flow control valve 55 to supply lower temperature air. When the indoor temperature is lower than the set temperature, the opening degree of the flow control valve 55 is reduced to reduce the amount of cold water flowing (step 4). If the indoor temperature is still higher than the set temperature even when the flow rate adjustment valve 55 is fully open, the damper 34a, which was previously fully closed, opens with the flow rate adjustment valve 55 fully open (mode 4).
, the frequency of the inverter 53 is increased to increase the rotation speed of the fan 54 in order to increase the air volume in accordance with the opening degree of the damper 34a. Thereafter, the air supply amount is adjusted depending on the fluctuations in the indoor load (step 5). During maximum air volume operation, the damper 34a,
35a is opened, and the conditioned air outlet 31 is fully opened (step 5 and mode 3).

Next, when the indoor temperature falls below the set temperature, 1 first reduces the opening degree of the damper 34a, and in order to reduce the scenery commensurate with the opening degree, the frequency of the inverter 53 is lowered and the rotation speed of the fan 54 is decreased. lower. (Step 5).

Eventually, even if the damper 34a reaches the fully closed state, if the indoor temperature is still below the set temperature, the flow rate adjustment valve 55, which had been in the fully open state until then, will remain in the fully closed state with the damper 34a fully closed.
Reduce the opening degree to moderate the temperature of the cold air to be supplied (
Step 4).

In this way, as the amount of air blown decreases, the area of the air outlet 31 also decreases, so the wind speed at the air outlet 31 is maintained at an appropriate speed without decreasing. Moreover, since the cold air is mainly blown out from the annular blowout passage 35, it is blown outward and is sufficiently diffused into the room, compared to when it is blown out from the central blowout passage 34.

Next, the mode determining means 61a detects that the heating mode is operated even during winter heating, and notifies the control device 63 of this (step 1).

Here, it is assumed that the set temperature is set in advance to 27°C. Then, the supply air temperature is controlled by the style control valve 55 in the minimum air volume operation with the damper 34a fully open and the damper 35a fully open (step 6, mode 1).

Next, as before, the temperature comparison means 64 compares the indoor temperature with the set temperature (step 7), and when the protozoan control valve provided in the coil 52 of the air conditioner 53 is not fully opened during minimum air volume operation, the indoor temperature is compared with the set temperature. When the temperature is lower than the set temperature, the control device 63 increases the flow rate of hot water or steam to supply higher temperature air. When the indoor temperature is higher than the set temperature, the flow rate of hot water or steam is reduced to supply air commensurate with the indoor temperature (step 8). Even if the flow rate adjustment valve 55 is fully open, if the indoor temperature is still lower than the set temperature, the damper 35a, which was previously fully closed, is opened (mode 2) with the flow rate adjustment valve 55 fully open. In order to increase the air volume commensurate with the opening degree, the frequency of the inverter 53 is also increased to increase the rotation speed of the fan 54. Thereafter, the air supply amount is controlled depending on the fluctuations in the indoor load (step 9). When operating at maximum air volume, damper 34
a, 35a are opened, and the conditioned air outlet 31 is fully opened (step 10, mode 3).

Next, when the indoor temperature reaches or exceeds the set temperature, first, the opening degree of the damper 35a is reduced, and in order to reduce the scenery commensurate with the opening degree, the frequency of the inverter 53 is lowered to lower the rotation speed of the fan 54. (Step 9). Eventually, even if the damper 35a reaches the fully closed state, if the indoor temperature is still higher than the set temperature, the damper 34a is fully closed.
The opening degree of the light weight adjustment valve 55, which had been fully open until then, is reduced to moderate the temperature of the warm air to be supplied (step 8).

In this way, as the amount of air blown decreases, the area of the outlet 31 also decreases, so the wind speed at the outlet 31 is maintained at an appropriate speed without decreasing. Furthermore, since the warm air is mainly blown directly below from the central outlet passage 34, it is blown closer to the floor than when it is blown out from the annular outlet passage 35, and is sufficiently diffused into the room.

As a result, this system can significantly reduce thermal energy loss caused by temperature differences between the upper and lower parts of the room.

In addition, in FIG. 9, motes 6 to 9 are time charts showing operations during intermediate periods and ventilation, and centering around mode 7, which is when the air-conditioned air outlet 31 is not in use, for example, when the indoor temperature is When it is lower than the temperature, it shifts to mode 6,
When the indoor temperature is higher than the outside temperature, the mode shifts to mode 8.

<Embodiment 2> As shown in FIG. 10, in this embodiment, one air-conditioned air outlet 31 according to the present invention is installed in each of a plurality of small rooms, and an indoor temperature detection device is installed in each room. Means 62
It has been established. Other points are the same as Example I.

Therefore, the operation is almost the same, but by providing an air-conditioned air outlet 31 in each room, thermal energy and air conveyance power can be saved by completely closing the air outlet 31 in rooms that are not in use. can do.

<Embodiments 3 and 4> Although not shown, in Embodiments 3 and 4, in Embodiment 1 or 2, instead of the inverter 53, an air conditioner 51 and an air-conditioned air outlet 31 are used for scenery adjustment.
A VAV unit is inserted into the duct connecting the two. The VAV unit has a damper installed in the air passage, and the area of the air passage can be varied by the damper. The operation is the same as that of the first or second embodiment except that the VAV unit adjusts the air volume.

<Example 5> As shown in FIG. 11, the third example has, in addition to the configuration of Example 1, a C02 that detects the C02a degree in the room to be air conditioned.
A degree detection means 71 is provided in the return air duct 72 returning from the room to the air conditioner 51, and accordingly, the control device 6
3 is equipped with a CO2 concentration comparing means (not shown) for comparing a preset reference CO2 concentration and an indoor CO2 concentration. Further, it has a ventilation means 74 which is activated when the CO2 concentration becomes higher than the reference CO2 concentration as a result of the comparison by the CO3 concentration comparison means. In the air conditioner 51, this ventilation means 74 includes an exhaust duct 75 for discharging air taken in from a room to be air-conditioned to the outside;
5, a selection valve 77 provided in the middle of the return air duct 72 for selecting either the exhaust duct 75 or the return air duct 72, and a selection valve 77 for introducing outside air into the air conditioner 51. An outside air intake duct 78, an outside air valve 79 provided with this outside air intake duct 78, and C0
When the concentration of 2a degrees becomes higher than the standard concentration, the selection valve 77 is closed by a command from the control device 63, and the exhaust valve 76 is closed.
The outside air intake valve 79 is fully opened, and the indoor air is exhausted from the exhaust duct 75, and fresh outside air is taken in from the outside air intake duct 78, and after being air-conditioned, it is discharged into the room from the conditioned air outlet 31. The aim is to supply

In addition, a circulation fan 81 driven by an inverter 81 is provided in the middle of the circulation duct 72, and depending on the concentration of CO2,
c The circulation fan 81 is controlled to rotate at a high speed when the O28 concentration is high, and the circulation fan 81 is controlled to rotate at a low speed when the CO7 concentration is low.

〔Effect of the invention〕

According to the method of the present invention, the indoor distribution during cooling and heating can be improved in an energy-saving manner. That is, in the minimum air volume operation mode, by closing the central air outlet and opening the annular air outlet during cooling, the cold air that is about to descend can be spread evenly in the horizontal direction of the room, and during heating, the annular air outlet is closed. By closing the air outlet and opening the central air outlet, the warm air can be allowed to descend to near the occupant's feet and then diffused, making it possible to maintain a uniform indoor temperature environment.

Further, since an appropriate amount of air is supplied while taking into consideration the above-mentioned indoor airflow distribution according to the indoor load, occupant comfort can be ensured while reducing air conveyance power.

Furthermore, when the air outlet device described in item 2 is used in the method of the present invention, not only can the blowing direction be suitably controlled depending on the properties of hot air and cold air, but also the blowing air volume and wind speed can be controlled in stages according to the indoor load.

[Brief explanation of the drawing]

1 to 9 show Embodiment 1 of the present invention, FIG. 1 is a front sectional view showing an air-conditioned air outlet, FIG. 2 is a partially cutaway side view thereof, and FIG. 3 is a plan sectional view. Fig. 4 is a diagram showing the connected state of the damper, Fig. 5 is a block diagram showing the configuration of the first embodiment, Fig. 6 is a schematic diagram showing the configuration of the first embodiment, and Fig. 7 is a diagram showing the configuration of the first embodiment. FIG. 8 is a flowchart showing the operation of the link mechanism, and FIG. 9 is a time chart 1 showing the opening and closing states of the damper. FIG. 10 is a schematic diagram showing the configuration of the second embodiment, and FIG. 11 is a schematic diagram showing the fifth embodiment. Further, FIG. 12 is a diagram showing a conventional example, and FIG. 13 is a diagram showing another conventional example. 31.Blowout outlet, 33 34.Central blowout path, 34a 35..Annular blowout path, 35a 39..Drive shaft, 40.. 47.Motor, 5.Tocone, Damper in central blowout path, -Damper in circular blowout path , linkage mechanism, air conditioner. Patent applicant Takasago Thermal Engineering Co., Ltd. Agent Patent attorney Sou Sato
Tsutomu Yama 1 Figure 2 Figure 3 Figure 4

Claims (2)

[Claims] (1) An anemo-shaped outlet 31 consisting of a central outlet 34 and an annular outlet 35 surrounding the central outlet 34 is provided on the ceiling of the room to be air-conditioned, and the outlets 34 and 35 of the outlet 31 are connected to the air conditioner 5.
1. An indoor air conditioning method that blows out conditioned air by opening and closing according to the cooling or heating mode, and when cooling, the annular blowout passage 35 is fully opened to follow the difference between the set temperature and the indoor temperature. The degree of opening of the central outlet passage 34 is made variable, and the degree of opening of the annular outlet passage 35 is made variable by fully opening the central outlet passage 34 during heating and following the difference between the set temperature and the room temperature.
Furthermore, the air conditioning method is characterized in that during cooling and heating, the amount of air supplied from the air conditioner 51 to the outlet 31 is made variable to follow the difference between the set temperature and the room temperature. (2) A central outlet passage 34 is defined inside the cylindrical cone 33 whose lower end edge widens outward, and at least one annular outlet passage 35 is formed surrounding the central outlet passage 34; , each outlet passage 34, 35 is provided with a plurality of damper groups 34a, 35a, respectively.
A drive shaft 39 for driving the air outlet 5a is provided inside and outside the air outlet 31,
On the other hand, a motor 47 that rotates in response to a control signal is installed outside the air outlet, and the motion of the motor 47 is transmitted to the drive shaft 39 via a link mechanism 40. An air outlet device used in the air conditioning method described in .