JP7126463B2 - Air conditioner control method using air flow window - Google Patents

Description

Application of Patent Act Article 30, Paragraph 2 Okumura-Gumi CSR Report 2018, pp. 35-36, October 1, 2018, Okumura-Gumi Co., Ltd.

Application of Article 30, Paragraph 2 of the Patent Act October 1, 2018, posting address https://www. okumuragumi. co. jp/environment/report/2018/pdf/2018_p35-p36. pdf

The present invention is capable of appropriately handling the window air in the airflow window throughout the year, and in the winter season, the heat of the window air can be used to suit the air conditioning of the interior zone. The present invention relates to a method of controlling an air conditioner using a window.

Patent Documents 1 and 2 are known as air-conditioning techniques using heat such as solar radiation near a window. Patent Document 1, "Perimeter area air conditioning method and air conditioning apparatus for implementing the air conditioning method" forms an air curtain without using an air conditioning apparatus dedicated to the perimeter area and improves the temperature environment in the perimeter area. For this purpose, the indoor unit installed in the perimeter area draws in the room air from the suction port and blows it upward from the air outlet. Then, it is exhausted from the exhaust duct together with the external air load. At that time, the primary air for the interior area sent from the branch duct to the downstream side of the fan in the air passage is supplied. In this way, a larger amount of air than the air sucked in from the suction port of the indoor unit is blown out from the blowout port, forming an air curtain between the blowout port and the exhaust port. In addition, the temperature environment in the perimeter area is improved by taking in the outside air load and adding a load (primary air for the interior area) that counters the outside air load to the circulating flow that circulates between the air outlet and the intake opening. ing.

Patent Document 2, "Perimeter Interior Air Conditioner and Air Conditioning Method", is perimeter-less air conditioning that enables the thermal environment of the perimeter zone to be controlled by the interior air conditioner, and realizes a comfortable thermal environment even if the perimeter air conditioner is omitted. It is an object of the present invention to provide a perimeter/interior air-conditioning system and air-conditioning method capable of controlling perimeter/interior air-conditioning, comprising an interior air-conditioning system for air-conditioning an interior zone in a building provided with double-glazed windows having blinds between outer and inner windows, and An exhaust device is provided for exhausting the air in the double window to the outside, the exhaust device is installed so as to be able to exhaust air from the air layer between the outer window and the blind, and the interior air conditioner is installed to exhaust the air between the inner window and the blind. It constitutes a perimeter interior air conditioner configured to allow air to be selectively drawn from the layers.

JP-A-7-167460 JP-A-2002-147793

As can be understood from the background art, the thermal environment in the perimeter zone is hotter in the summer than in the middle of spring and autumn due to the effects of sunlight, etc., and it may feel hot even in the winter. Various countermeasures have been taken.

As a countermeasure, double-glazed windows such as airflow windows are used, but in this airflow window, the air inside the window becomes considerably hot, so in the summer, the air is simply exhausted, while in the winter, the heat is released. should be used for indoor air conditioning. In particular, it is desirable to utilize window air as heat so as to suit the air conditioning of the interior zone away from the windows.

For example, in winter, it is conceivable to draw the window air as it is and blow it into the interior zone that is already warmed by the indoor air conditioning. The window air will mix in the room, and the interior zone will become a thermal environment with uneven temperature, which may cause discomfort. Implementing the system was difficult.

SUMMARY OF THE INVENTION The present invention has been devised in view of the above-mentioned problems of the prior art. To provide a control method for an air conditioner using an air flow window that can be used to suit the air conditioning of a room.

A method of controlling an air conditioner using an airflow window according to the present invention includes an airflow window formed by sandwiching a pair of inner and outer glasses between upper and lower frames, and having a ventilable hollow chamber-like airflow window, and the airflow window through the airflow window. a first flow path extending outward of a room space having a first fan for circulating window portion air in the air flow window toward the outside of the room space; and an air outlet provided away from the air flow window, and a second fan circulates room air from the air inlet toward the air outlet to circulate in the room space. 2 flow path and the first flow path are provided on the discharge side of the first fan for switching communication/blocking of the first flow path with respect to the second flow path. Temperature measurement values are input from flow path switching means, an outdoor air conditioner that introduces outside air into the room space, a first temperature sensor that measures the temperature inside the window part, and a second temperature sensor that measures the temperature inside the room space. At the same time, the CO2 concentration is input from the CO2 sensor that measures the CO2 concentration in the room space, and the operation of the first fan, the operation of the second fan, the operation of the outdoor air conditioner, and the flow path switching means using a control device that controls the switching operation of the above, the operation of the first and second fans is stopped, the outdoor air conditioner is operated, and the flow path switching means switches the flow path from the first flow path to the second flow path. A state in which the flow path is blocked is defined as an initial mode; in the initial mode, when the temperature in the room is outside the predetermined upper and lower limit range or the difference between the temperature in the window and the temperature in the room is less than or equal to a predetermined value, In order to discharge the window air to the outside of the room space, the first fan is operated while maintaining the state in which the second flow path is blocked from the first flow path by the flow path switching means. In the discharge mode, when the CO2 concentration is equal to or less than a predetermined value, the operation of the outdoor air conditioner is stopped in order to mix the window air with the indoor air, and the flow path switching means , the first flow path is communicated with the second flow path, and the second fan is operated to shift to a temperature-optimized circulation mode; when neither of the discharge mode and the temperature-optimized circulation mode conditions are satisfied return to the initial mode; in the optimum temperature circulation mode, the speed of the second fan is gradually increased as the difference between the temperature in the room and the temperature in the window gradually increases. It is characterized by

In the method for controlling an air conditioner using an airflow window according to the present invention, the window air in the airflow window can be handled appropriately throughout the year, and in winter, the heat of the window air can be transferred to the interior zone. It can be used to match air conditioning.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic plan view showing an air conditioner used in an air conditioner control method using an airflow window according to the present invention; Fig. 2 is a side view of the air conditioner using the airflow window shown in Fig. 1, Fig. 2(A) shows the operating state of the outdoor air conditioner, and Fig. 2(B) shows the optimum temperature circulation mode state. It is an explanatory view explaining. 2 is a configuration diagram of a control system including a control device provided in the air conditioner using the airflow window shown in FIG. 1; FIG. FIG. 2 is a flow chart showing a preferred embodiment of a method for controlling an air conditioner using the airflow window shown in FIG. 1; FIG. 2 is a graph showing operating conditions of a first fan and a second fan of the air conditioner shown in FIG. 1;

A preferred embodiment of a method for controlling an air conditioner using an airflow window according to the present invention will now be described in detail with reference to the accompanying drawings.

To explain an air conditioner using an airflow window to which the control method according to the present embodiment is applied, as shown in FIGS. 2, a ceiling 4 provided under the floor slab 3 of the immediately above floor, a pair of partition walls 5 provided at intervals from the side facing the outside of the building 1 toward the back of the building 1, A room space is partitioned by an airflow window 6 provided at an opening facing the outside of the building 1 and a corridor side wall 8 partitioned from a corridor 7 inside the building 1 on the side opposite to the airflow window 6. 9 is formed.

The airflow window 6 is arranged, for example, between a pair of partition walls 5 and sandwiched between the floor slab 2 and the floor slab 3 of the immediately above floor by a pair of inner and outer glasses 10 to form a hollow chamber. A ventilation passage (not shown) communicating with the room space 9 is formed in the lower part of the airflow window 6 so as to allow ventilation inside the airflow window 6 . A blind 11 is provided inside the airflow window 6 in order to adjust the amount of solar radiation to the room space 9 .

In the ceiling space 12 formed between the ceiling 4 of the room space 9 and the floor slab 3 of the floor immediately above, a first flow path 13 having one end communicated with the inside of the air flow window 6 extends outward from the room space 9. extended over the The first flow path 13 is composed of a duct or the like. In the middle of the first flow path 13, in order to circulate the window air in the airflow window 6 toward the outside of the room space 9, the window air is sucked from the airflow window 6 and directed to the outside of the room space 9. A first fan 14 is provided which discharges towards.

In the ceiling space 12, a suction port 15a is provided near the air flow window 6, that is, on the perimeter zone side, and a suction port 15a is provided away from the air flow window 6, that is, on the interior zone side of the interior space behind the perimeter zone. A second flow path 15 having an outlet 15b is provided.

The second flow path 15 is configured by a duct or the like and provided in parallel with the first flow path 13 . The suction port 15a and the blowout port 15b are arranged in openings formed in the ceiling 4 . In the middle of the second flow path 15, the air in the room space, that is, the room air is sucked from the suction port 15a on the perimeter zone side, circulated toward the outlet port 15b, and blown out to the interior zone side. A second fan 16 is provided to circulate the air into the room space 9 .

In the ceiling space 12 , a channel switching means 17 is provided in the first channel 13 so as to be positioned on the discharge side 14 a of the first fan 14 . The flow path switching means 17 is connected to the discharge side 16 a of the second fan 16 . In the illustrated example, the second flow path 15 is connected to flow path switching means 17 via a branch flow path 18 branched from the second flow path 15 . The branch channel 18 is also configured by a duct or the like.

The flow path switching means 17 opens the first flow path 13 and closes the branch flow path 18 in order to communicate the first flow path 13 from the side of the airflow window 6 to the outside of the chamber space 9. a first switching position for blocking the first flow path 13 from the second flow path 15; 18 is opened and the first flow path 13 is blocked to communicate the first flow path 13 with the second flow path 15.

The channel switching means 17 is composed of a damper mechanism or the like for closing or opening the channel.

As a first function, the air conditioner using this air flow window maintains the indoor temperature at an appropriate temperature lower than the outside temperature by the indoor air conditioner by the indoor air conditioner, such as in the summer, and the air of the window is maintained. When the temperature is high, the channel switching means 17 is set to the first switching position, and the window air is circulated through the first channel 13 by the first fan 14 and exhausted to the outside of the room space 9 . The thermal environment of the room space 9 can be relaxed by this exhaust.

On the other hand, as a second action, for example, in winter, when the indoor temperature is maintained at an appropriate temperature higher than the outdoor temperature by the indoor air conditioning by the indoor air conditioner, and the temperature of the window air is high due to solar radiation etc., The flow path switching means 17 is set to the second switching position, and the first fan 14 circulates the window air from the first flow path 13 to the second flow path 15 (the second fan 16 is stopped). , to the room space 9 (interior zone) from the outlet 15b. By this blowing, the thermal environment of the room space 9 and the indoor air conditioning load can be alleviated.

Furthermore, in the case of the second action, when the room temperature is maintained by the room air conditioning and the temperature of the window air is considerably high, the window air is blown directly into the room space 9, and is blown out. Thermal lumps of the air in the window area are scattered in the room space 9, causing temperature unevenness and possibly impairing comfort.

In such a case, as a third action, the flow path switching means 17 is set to the second switching position, and the window section air is circulated from the first flow path 13 to the second flow path 15 by the first fan 14. At the same time, the indoor air is circulated through the second flow path 15 by the second fan 16 . In this way, the window air can be mixed with the circulating room air, and by blowing out the mixed hot air from the blowout port 15b, the comfort of the thermal environment in the room space 9 can be improved. .

These first to third actions are not limited to the above examples, and can be easily created at any time by operating the first fan 14, operating the second fan 16, and switching the flow path switching means 17. Thus, the indoor space 9 can be kept in a favorable thermal environment throughout the four seasons.

In this embodiment, an outdoor air conditioner 23 that introduces outside air into the room space 9 is combined with the air conditioner using this air flow window. When outside air from the outdoor air conditioner 23 is introduced into the room space 9, part of it is taken into the ventilable airflow window 6 and becomes window air.

Further, in the present embodiment, a control device that controls the operation of the first fan 14, the operation of the second fan 16, the operation of the outdoor air conditioner 23, and the switching operation of the flow path switching means 17, which constitute the air conditioner. 19 are provided. Accordingly, control signals are output from the control device 19 to the first and second fans 14 and 16 , the outdoor air conditioner 23 , and the flow path switching means 17 . In the illustrated example, the control device 19 is installed in the ceiling space 12 .

Temperature measurement values are input to the controller 19 from a first temperature sensor 20 that measures the temperature inside the airflow window 6 and a second temperature sensor 21 that measures the temperature inside the room. As shown in FIG. 2, the first temperature sensor 20 is provided inside the airflow window 6, and the temperature measurement value of the temperature inside the window is wirelessly input to the control device 19. As shown in FIG. A second temperature sensor 21 is provided in the perimeter zone, and the temperature measurement value of the room temperature is wirelessly input to the control device 19 .

In the illustrated example, an additional temperature sensor 22 is provided in the interior zone, and the temperature measurement value of the room temperature measured by this additional temperature sensor 22 is wirelessly input to the control device 19. may

Further, the room space 9 is provided with a CO2 sensor 24 for measuring the CO2 concentration in the room space 9, and the CO2 concentration is wirelessly input from the CO2 sensor 24 to the control device 19. FIG. The control device 19 operates the outdoor air conditioner 23 when the CO2 concentration is a set value, for example, 1,000 ppm or more, and stops the operation when it is less than the set value.

Next, according to the control flow diagram shown in FIG. 4 and the graph diagram showing the operating conditions of the first fan 14 and the second fan 16 shown in FIG. will be described. In FIG. 5, the vertical axis indicates the air volume ratio of the first and second fans 14 and 16 (second fan/first fan), and the horizontal axis indicates the temperature difference between the window temperature T1 and the indoor space temperature T2. (T1-T2) is taken.

As shown in the figure, when the control device 19 is activated, the control device 19 puts the first and second fans 14 and 16 into a shutdown state, starts the operation of the outdoor air conditioner 23, and switches the flow path switching means 17 to , the initial mode is set to the first switching position for blocking the second flow path 15 from the first flow path 13 .

From the measured values of the window inside temperature T1 and the room space temperature T2, the room space temperature T2 is within a predetermined upper and lower limit range, for example, between 17 ° C. and 30 ° C., and the window part inside temperature T1 and the room space temperature When the temperature difference from T2 is smaller than a predetermined value, for example, 10° C., the indoor space 9 is considered to be in a comfortable thermal environment, and the first and second fans 14 and 16 are maintained in a stopped state, and the outdoor air conditioner is turned on. Return to the initial mode and maintain to continue the operation of 23.

As a result, wasteful air conditioning operation can be avoided, and energy saving can be ensured.

On the other hand, when the room temperature T2 is outside the predetermined upper and lower limit range, or when the temperature difference between the window part inside temperature T1 and the room space inside temperature T2 is a predetermined value or more, With the flow switching means 17 maintained at the first switching position to shut off the second flow path 15, the operation of the first fan 14 is started to shift to the discharge mode. In the exhaust mode, the window air is sucked into the first flow path 13 by the first fan 14 and is exhausted to the outside of the room space 9 as it is.

As a result, it is possible to reduce the influence of the heat of the air in the airflow window 6 on the room space 9 .

Next, in the discharge mode, when the CO2 concentration is greater than a predetermined value, eg, 1,000 ppm, the control device 19 performs control to return to the initial mode again. By introducing the outside air into the room space 9 from the outdoor air conditioner 23, the CO2 concentration can be reduced. The loop processing is repeated until the CO2 concentration becomes equal to or less than a predetermined value (this is the range of (a) in FIG. 5).

Next, in the discharge mode, when the CO2 concentration becomes equal to or less than a predetermined value, the control device 19 stops the operation of the outdoor air conditioner 23 and changes the flow path to connect the first flow path 13 to the second flow path 15. The switching means 17 is switched to the second switching position, and in addition to the operation of the first fan 14, the second fan 16 is operated to shift to the appropriate temperature circulation mode.

In the proper temperature circulation mode, the room air circulated by the second fan 16 is mixed with the window air sent by the first fan 14, and this mixed air is blown out from the outlet 15b into the room space 9. In this optimum temperature circulation mode, the operation (rotational speed) of the second fan 16 is gradually increased in multiple steps according to the temperature difference between the window temperature T1 and the room temperature T2. be driven.

When the temperature difference between the window temperature T1 and the room temperature T2 is, for example, less than 15° C., the second fan 16 is operated at a low speed (range (b) in FIG. 5).

When the temperature difference between the window portion inside temperature T1 and the indoor space inside temperature T2 exceeds less than 15° C., for example, less than 20° C., the second fan 16 is operated at medium speed (see (C) in FIG. 5). range).

When the temperature difference between the window temperature T1 and the indoor space temperature T2 exceeds less than 20° C., for example, less than 25° C., the second fan 16 is operated at high speed (range (d) in FIG. 5). ).

When the temperature difference between the window temperature T1 and the room temperature T2 is 25° C. or more, the second fan 16 is operated at a higher speed (range (E) in FIG. 5).

In the optimum temperature circulation mode, as the temperature difference between the window inside temperature T1 and the room space temperature T2 increases, the operation speed control of the second fan 16 increases the circulating air volume of the room air sequentially with respect to the window air. A comfortable thermal environment can be secured in the room space 9 by preventing the temperature in the room space 9 from suddenly changing.

The control device 19 returns to the initial mode at any time during control when the conditions for neither the discharge mode nor the temperature-optimized circulation mode are satisfied.

In the air conditioner using the airflow window according to the present embodiment described above, the air in the window portion of the airflow window 6 is simply exhausted in the summer (exhaust mode), while in the winter, the heat is used for indoor air conditioning. It can be used (optimal temperature circulation mode). Since the outlet 15b of the second flow path 15 is provided in the interior zone away from the window side, the window air can be used as heat to suit the air conditioning of the zone.

In winter, air conditioning is performed not only by taking in the window air as it is and blowing it into the interior zone warmed by the indoor air conditioning, but also by blowing the circulating indoor air and the window air in a mixed manner. It is possible to prevent the interior zone from becoming a thermal environment with uneven temperature, and realize a comfortable air-conditioning system using the thermal heat of the window air.

That is, the window air in the airflow window 6 can be appropriately handled throughout the year, and in winter, the heat of the window air can be used to suit the air conditioning of the interior zone. It can create a comfortable thermal environment.

2 floor slab 3 floor slab immediately above 6 airflow window 9 room space 10 glass 13 first channel 14 first fan 14a discharge side of first fan 15 second channel 15a suction port 15b outlet 16 second 2 fan 17 flow path switching means 19 control device 20 first temperature sensor 21 second temperature sensor 23 outdoor air conditioner 24 CO2 sensor

Claims (1)

An airflow window in the form of a hollow chamber that is formed between a pair of inner and outer glass sandwiched between the upper and lower frames, and that can be ventilated;
a first flow path extending from the airflow window to the outside of a room space having the airflow window, and for circulating the window section air in the airflow window toward the outside of the room space with a first fan; ,
A suction port provided close to the air flow window and an air outlet provided away from the air flow window, and a second fan circulates room air from the suction port toward the air outlet. a second flow path that circulates in the chamber space;
a flow path switching means provided in the first flow path on the discharge side of the first fan for switching communication/blocking of the first flow path with respect to the second flow path;
an outdoor air conditioner that introduces outside air into the room space;
A temperature measurement value is input from each of a first temperature sensor that measures the temperature inside the window and a second temperature sensor that measures the temperature inside the room, and a CO2 concentration is input from the CO2 sensor that measures the CO2 concentration in the room. Using a control device that receives input and controls the operation of the first fan, the operation of the second fan, the operation of the outdoor air conditioner, and the switching operation of the flow path switching means,
A state in which the operation of the first and second fans is stopped, the outdoor air conditioner is operated, and the second flow path is blocked from the first flow path by the flow path switching means is defined as an initial mode,
In the initial mode, when the temperature in the room is outside the predetermined upper and lower limits or the difference between the temperature in the window and the temperature in the room is below a predetermined value, the window air is discharged to the outside of the room. In order to do so, a state is maintained in which the second flow path is cut off from the first flow path by the flow path switching means, and a transition is made to a discharge mode in which the first fan is operated,
In the discharge mode, when the CO2 concentration is equal to or less than a predetermined value, the operation of the outdoor air conditioner is stopped and the first flow path is switched by the flow path switching means in order to mix the window air with the indoor air. Communicate with the second flow path and shift to a suitable temperature circulation mode in which the second fan is operated,
When neither of the discharge mode and the optimal temperature circulation mode conditions are satisfied, the above initial mode is returned to,
In the optimum temperature circulation mode, an airflow window is used, which is characterized by sequentially increasing the speed of the second fan according to the gradually increasing difference between the temperature inside the room and the temperature inside the window. air conditioner control method.

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