JP7386402B2 - air conditioning system - Google Patents

Description

The present disclosure relates to an air conditioning system that performs air conditioning control and humidity control.

The space sterilization and deodorization device sprays fine water particles such as chemicals, such as hypochlorous acid water, in order to sterilize the target area. For example, the liquid atomization chamber of the space sterilization and deodorization device releases water droplets from the hypochlorous acid aqueous solution stored in the water storage section. The water droplets are discharged from the outlet to the target area through the air passage through the ventilation by the ventilation unit (see, for example, Patent Document 1).

International Publication No. 20/158850

If you want to lower the humidity in the room, use an air conditioner to lower the temperature. However, when the temperature approaches the user-set temperature and the air conditioner no longer cools the air, it becomes difficult for the humidity to decrease.

The present disclosure has been made in view of these circumstances, and its purpose is to provide a technique for bringing the humidity closer to the target humidity in a region to be controlled.

In order to solve the above problems, an air conditioning system according to an aspect of the present disclosure is an air conditioning system that air-conditions a predetermined space, and includes an air conditioning device that is connected to one outdoor unit and performs heating or cooling; A control device that controls the device. The control device includes a temperature control unit that controls cooling by the air conditioner based on a target temperature, a user-set temperature, and a measured temperature in the space, and a temperature control unit that controls cooling by the air conditioner based on a target temperature, a user-set temperature, and a measured temperature in the space; A humidity control unit that controls dehumidification by the conditioning device. When the air conditioner performs cooling operation , the temperature control section controls cooling by the air conditioner, the humidity control section dehumidifies until the measured humidity becomes equal to or less than the target humidity, and the temperature control section When the measured humidity is higher than the target humidity, the cooling time by the air conditioner is made longer than when the measured humidity is below the target humidity. The temperature control unit increases the cooling time by reducing the amount of heat absorbed by the air conditioner per unit time, and when the measured humidity is lower than the target humidity, sets the user-set temperature as the target temperature, performs cooling operation, and performs the measurement. When the humidity is higher than the target humidity, cooling operation is performed by setting the user-set temperature as the target temperature, and when the measured temperature approaches the target temperature, the second temperature, which is higher than the measured temperature and does not stop cooling by the air conditioner, is operated. By setting one pseudo set temperature to the target temperature, cooling operation is performed by reducing the amount of heat absorbed per unit time of the air conditioner without turning off the thermostat for cooling the air conditioner.

Note that arbitrary combinations of the above components and expressions of the present disclosure converted between methods, devices, systems, recording media, computer programs, etc. are also effective as aspects of the present disclosure.

According to the present disclosure, it is possible to bring the humidity closer to the target humidity in a region to be controlled.

FIG. 1 is a diagram showing the configuration of an air conditioning system according to an example. FIG. 2 is a diagram showing an example of the relationship between the initial required level and temperature difference of the air conditioner shown in FIG. 1; FIG. 3(a) shows an example of the relationship between the required level increase/decrease value and the temperature difference during cooling operation of the air conditioner in FIG. 1, and FIG. FIG. 3 is a diagram illustrating an example of the relationship between a request level increase/decrease value and a temperature difference. FIG. 2 is a diagram illustrating an example of control of the air conditioner and humidity control device of FIG. 1 during heating operation. FIG. 2 is a diagram illustrating another example of control during heating operation of the air conditioner and humidity control device in FIG. 1; FIG. 2 is a diagram illustrating an example of control of the air conditioner and humidity control device of FIG. 1 during cooling operation. 2 is a diagram illustrating another example of control during cooling operation of the air conditioner and humidity control device in FIG. 1. FIG.

Before specifically describing the embodiments of the present disclosure, an outline of the embodiments will be described. This embodiment relates to an air conditioning system that controls indoor temperature and humidity. The air conditioning system includes an air conditioner. In an air conditioning system, when it is desired to lower indoor humidity, the temperature is lowered using an air conditioner. However, when the measured temperature approaches the user-set temperature, the air conditioner no longer cools the air, making it difficult for the humidity to decrease.

In this embodiment, when the air conditioner performs a cooling operation, when the measured humidity is higher than the target humidity, the air cooling time by the air conditioner is made longer than when the measured humidity is below the target humidity.

The examples described below all show one preferred specific example of the present disclosure. Therefore, the numerical values, shapes, materials, components, arrangement positions and connection forms of the components, steps (processes) and order of steps, etc. shown in the following examples are examples and limit the present disclosure. It's not the main idea. Therefore, among the constituent elements in the following examples, constituent elements that are not described in the independent claims representing the topmost concept of the present disclosure will be described as arbitrary constituent elements. Further, in each figure, substantially the same configurations are denoted by the same reference numerals, and redundant explanations will be omitted or simplified.

FIG. 1 shows the configuration of an air conditioning system 100 according to an embodiment. When circulating air in an indoor space (also referred to as a "predetermined space" or "indoor room"), the air conditioning system 100 performs cooling processing (dehumidification processing) or heating processing on the air from the indoor space as necessary. At the same time, it is a device that impregnates the air flowing inside with finely divided water. In this embodiment, an example will be described in which a component that purifies the air (hereinafter referred to as an "air purifying component") is included in the air together with micronized water, but the air purifying component does not have to be included. Hypochlorous acid can be used as an example of an air purifying component. The air conditioning system 100 sterilizes and deodorizes the indoor space by supplying air containing air purifying components that has circulated inside the indoor space.

The air conditioning system 100 includes a humidity control device 10, an air conditioner 50, an air conditioner 56, an outdoor unit 60, a duct 64, an operating device 70, an operating device 76, a control device 80, and a control device 86. Here, the number of each of the humidity control device 10, the air conditioner 50, the air conditioner 56, the operating device 70, the operating device 76, the control device 80, and the control device 86 is one, but the number is not limited to this. The number of these devices may be one or more, and can be appropriately determined by experiment or simulation depending on the volume of the indoor space. The number of air conditioners 50 and the humidity control devices 10 are the same. The ratio between the number of air conditioners 50 and the number of air conditioners 56 can be appropriately determined by experiment or simulation depending on the required humidification amount and the like.

The air conditioner 50 and the air conditioner 56 are connected to a common outdoor unit 60. The outdoor unit 60 is an outdoor unit installed in an outdoor space. Since the outdoor unit 60 has a general configuration, a detailed explanation will be omitted.

The air conditioner 56 is, for example, a four-way cassette air conditioner embedded in the ceiling of an indoor space. The air conditioner 56 is not connected to the humidity control device 10, performs air conditioning control on the air sucked in from the indoor space, and sends out the temperature-adjusted air to the indoor space. The air conditioner 56 prioritizes temperature control over humidity control. The air conditioner 56 can also be called a "dedicated air conditioning device."

A control device 86 is connected to the air conditioner 56, and an operating device 76 is connected to the control device 86. The operating device 76 includes a user interface that can be operated by a user, and receives a first user-set temperature from the user. The operating device 76 includes a temperature sensor (not shown), and the temperature sensor measures the temperature of the air in the indoor space. The operating device 76 transmits the first user set temperature and the first measured temperature to the control device 86 .

The control device 86 is arranged, for example, in the same housing as the air conditioner 56. The control device 86 controls heating or cooling of the air by the air conditioner 56 based on the first user set temperature and the first measured temperature transmitted from the operating device 76.

The air conditioner 56 performs air conditioning control under the control of the control device 86 so that the first measured temperature approaches the first user set temperature.

The air conditioner 50 is, for example, a four-way cassette air conditioner embedded in the ceiling of an indoor space. The air conditioner 50 is connected to the humidity control device 10 through a duct 64, performs air conditioning control on the air sucked in from the indoor space, sends out a portion of the temperature-adjusted air to the indoor space, and adjusts the temperature. The remaining air is passed through the duct 64 and sent to the humidity control device 10. The air conditioner 50 prioritizes humidity control over temperature control. The air conditioner 50 can also be called a "humidity control device." The air conditioner 50 may send all of the temperature-adjusted air to the humidity control device 10 without sending out a portion of the temperature-adjusted air to the indoor space.

A control device 80 is connected to the humidity control device 10 and the air conditioner 50, and an operating device 70 is connected to the control device 80. The operating device 70 includes a user interface that can be operated by a user, and receives the second user-set temperature and user-set humidity from the user. The operating device 70 includes a temperature and humidity sensor (not shown), and the temperature and humidity sensor measures the temperature and humidity of the air in the indoor space. The operating device 70 transmits the second user-set temperature, user-set humidity, second measured temperature, and measured humidity to the control device 80.

The control device 80 is arranged, for example, in the same housing as the humidity control device 10. The control device 80 has a temperature control section 82 and a humidity control section 84 . The temperature control unit 82 controls heating or cooling of air by the air conditioner 50 based on the target temperature, the second user set temperature, and the second measured temperature. As will be described later, a second user-set temperature is set as the target temperature, or a value corresponding to the second measured temperature is set.

The humidity control unit 84 controls humidification by the humidity control device 10 during heating operation and cooling operation based on the target humidity, which is the user-set humidity, and the measured humidity, and also controls the dehumidification by the air conditioner 50 during cooling operation. Control.

The functions of the operating device 70 and the operating device 76 may be provided in one operating device 70. In this case, the first user-set temperature and the second user-set temperature may be the same, and the first measured temperature and the second measured temperature may be the same value measured by the same temperature and humidity sensor.

The air conditioner 50 performs air conditioning control under the control of the control device 80 so that the second measured temperature approaches the target temperature. When the second measured temperature is lower than the target temperature during heating operation, the control device 80 increases the required level and controls the degree of heating by the air conditioner 50 as the difference between the second measured temperature and the target temperature increases. increase. During heating operation, the required level represents the ability to heat air, and the higher the required level, the more heat the air conditioner 50 supplies per unit time, and the higher the heating ability.

When the second measured temperature is higher than the target temperature during cooling operation, the control device 80 increases the required level and controls the degree of cooling by the air conditioner 50 as the difference between the second measured temperature and the target temperature increases. increase. During cooling operation, the required level represents the ability to cool the air, and the higher the required level, the greater the amount of heat absorbed per unit time by the air conditioner 50, and the higher the cooling capacity.

FIG. 2 shows an example of the relationship between the initial required level and the temperature difference of the air conditioner 50 shown in FIG. The initial required level is a required level that is set by the control device 80 when the air conditioner 50 changes from thermo-off to thermo-on.

During cooling operation, "temperature difference ΔTs = second measured temperature - target temperature".
During heating operation, "temperature difference ΔTs = target temperature - second measured temperature".

3(a) shows an example of the relationship between the required level increase/decrease value and the temperature difference during the cooling operation of the air conditioner 50 in FIG. 1, and FIG. An example of the relationship between the required level increase/decrease value and the temperature difference is shown below.

The control device 80 calculates the required level increase/decrease value based on the temperature difference according to the relationship shown in FIG. The calculated request level increase/decrease value is added to the immediately previous request level, and the obtained request level is set as the current request level. For example, the minimum value of the request level is "1" and the maximum value is "30".

The numerical values shown in FIGS. 2, 3(a), and 3(b) can be determined as appropriate through experiments and simulations.

Under the control of the control device 80, the humidity control device 10 sprays water containing hypochlorous acid as an air purifying component onto the air conditioned by the air conditioner 50 so that the measured humidity approaches the target humidity. to perform humidity control. The humidity control device 10 can also be called an air purification device.

The humidity control device 10 includes a blower section 12 and a humidification purification section 14 . The air blower 12 blows air heated or cooled by the humidity control device into the humidity control device 10 .

The humidification and purification section 14 supplies hypochlorous acid through humidification. The humidification and purification unit 14 atomizes the hypochlorous acid water by centrifugal crushing and releases it into the air. The humidification purification unit 14 uses a humidification motor (not shown) to rotate a centrifugal crushing unit (not shown), sucks up the stored hypochlorous acid water by centrifugal force, and scatters, collides, and crushes it around (in the centrifugal direction), It uses a centrifugal crushing system that absorbs moisture into the air passing through it.

The operation of the air conditioning system 100 will be described below in the order of heating operation and cooling operation. It is assumed that the accepted first user-set temperature and second user-set temperature are equal, and these are referred to as user-set temperatures. Further, it is assumed that the first measured temperature and the second measured temperature are equal, and these are called measured temperatures.

(Heating operation)
During heating operation, the control devices 80 and 86 make the temperature range in which the air conditioner 50 is heated wider than the temperature range in which the air conditioner 56 is heated, in order to increase the amount of humidification by the humidity control device 10.

The control device 80 performs heating control of the air conditioner 50 by changing the temperature at which heating is stopped based on whether the measured humidity is equal to or higher than the target humidity. Specifically, the control device 80 performs heating control of the air conditioner 50 such that when the measured humidity is equal to or higher than the target humidity, and the measured temperature reaches a first heating stop temperature that is higher than the user-set temperature by a predetermined temperature, Heating by the air conditioner 50 is stopped. The control device 80 performs heating control on the air conditioner 50 when, when the measured humidity is less than the target humidity, the measured temperature reaches a second heating stop temperature that is higher than the first heating stop temperature by a predetermined temperature. Stop heating by 50. The predetermined temperature can be appropriately determined by experiment or simulation, and is, for example, 1°C.

The control device 86 controls the heating of the air conditioner 56 by not changing the heating stop temperature regardless of the measured humidity. Specifically, the control device 86 performs heating control of the air conditioner 56 such that when the measured temperature reaches the first heating stop temperature, regardless of whether the measured humidity is equal to or higher than the target humidity, the control device 86 controls the heating of the air conditioner 56. Stop heating. Note that the heating stop temperature is determined based on the user-set temperature, so if the user changes the user-set temperature, the heating stop temperature is also changed in accordance with the user-set temperature.

Therefore, the air conditioner 50 can be heated to the second heating stop temperature, and the air conditioner 56 can be heated to the first heating stop temperature, and as described above, the air conditioner 50 is heated. The temperature range is wider than the temperature range in which the air conditioner 56 is heated.

When the air conditioning system 100 starts heating operation, the air conditioner 56 and the air conditioner 50 heat the air, and the humidity control device 10 sprays water containing an air purifying component to humidify the air. Since the air heated by the air conditioner 56 is sent to the indoor space without being humidified by the humidity control device 10, a decrease in the temperature of the indoor space due to humidification can be reduced, and an increase in the temperature of the indoor space can be assisted.

Thereafter, when the measured temperature reaches the first heating stop temperature, the air conditioner 56 stops heating, and if the measured humidity has reached the target humidity at this time, the air conditioner 50 also stops heating.

On the other hand, even if the air conditioner 56 stops heating due to the measured temperature reaching the first heating stop temperature, if the measured humidity has not reached the target humidity at this time, the air conditioner 50 will stop heating when the measured temperature reaches the first heating stop temperature. Continue heating until reaching the second heating stop temperature. Since heating is continued until the second heating stop temperature is higher than the first heating stop temperature, the humidity can be further increased and brought closer to the target humidity.

The heating operation of the air conditioner 50 will be explained with reference to FIGS. 4 and 5.
FIG. 4 is a diagram illustrating an example of control of the air conditioner 50 and humidity control device 10 in FIG. 1 during heating operation. In this example, the user-set temperature is 25° C., and the user-set humidity, which is the target humidity, is 50%. When the elapsed time is 0 minutes, the measured temperature is 20° C. lower than the user-set temperature, and the measured humidity is 30% lower than the target humidity. Thereafter, due to heating and humidification, the measured temperature exceeds the user-set temperature in 20 minutes, and the measured humidity reaches the target humidity.

When the air conditioner 50 performs heating operation, the humidity control unit 84 performs humidification by the humidity control unit 10 until the measured humidity becomes equal to or higher than the target humidity, and the temperature control unit 82 controls the humidity control unit 84 to perform humidification when the measured humidity is less than the target humidity. In this case, the heating time by the air conditioner 50 is made longer than in the case where the measured humidity is equal to or higher than the target humidity.

The temperature control unit 82 increases the heating time by decreasing the amount of heat supplied by the air conditioner 50 per unit time. Specifically, the temperature control unit 82 reduces the amount of heat supplied by the air conditioner 50 per unit time by lowering the required level.

When the measured humidity is less than the target humidity, the temperature control unit 82 sets the user-set temperature as the target temperature and performs heating operation, and when the measured temperature approaches the target temperature, the temperature control unit 82 sets the first temperature lower than the measured temperature by a certain temperature. By setting the pseudo set temperature to the target temperature, the amount of heat supplied per unit time of the air conditioner 50 is reduced to perform heating operation. Control for setting the first pseudo set temperature to the target temperature can be called humidity control. The constant temperature is, for example, 0.5°C. Specifically, the temperature adjustment control unit 82 sets the first pseudo-set temperature to the target temperature when the measured temperature reaches a humidity control start temperature that is 2° C. lower than the target temperature that is the user-set temperature. The temperature adjustment control unit 82 increases the first pseudo-set temperature in accordance with the increase in the measured temperature, and sets the upper limit of the first pseudo-set temperature as the user-set temperature.

The first pseudo set temperature is a temperature at which heating by the air conditioner 50 does not stop. Stopping heating means turning off the thermostat of the air conditioner 50. With thermo off, the required level is zero. Heating with residual heat after the thermostat is turned off is also considered to be stopped. Since the air conditioner 50 stops heating when the measured temperature becomes higher than the target temperature by a predetermined temperature or more (1° C. in this example), the temperature control unit 82 controls the first pseudo set temperature so as not to stop heating. I do.

From the elapsed time of 0 minutes to 3 minutes in FIG. 4, the target temperature is 25° C., the request level is set to the maximum “30”, the air is heated, and the measured temperature increases. After the elapsed time of 0 minutes, the heated air is also humidified. When the measured temperature reaches 23° C. which is 2° C. lower than the target temperature after an elapsed time of 4 minutes, the first pseudo set temperature of 22.5° C. which is 0.5° C. lower than the measured temperature is set as the target temperature. As a result, based on the relationship shown in FIG. 3(b), the required level is set to "30"-"2"="28", and the heating capacity becomes low. The same control is performed for the elapsed time from 5 minutes to 19 minutes, and the request level gradually decreases to "1". During the elapsed time from 4 minutes to 19 minutes, the rate of increase in the measured temperature is slower than when the elapsed time is 3 minutes, and humidification can be continued without stopping heating. Therefore, the humidity can be increased, and the measured humidity reaches 50% of the target humidity in 20 minutes.

Furthermore, the measured temperature reached the user-set temperature after an elapsed time of 16 minutes. It can also be said that the temperature adjustment control unit 82 lengthens the heating time required for the air conditioner 50 to reach the user-set temperature when the measured humidity is less than the target humidity compared to when the measured humidity is greater than or equal to the target humidity.

When the measured humidity is equal to or higher than the target humidity, the air conditioner 50 sets the user-set temperature as the target temperature and performs heating operation. Since the measured humidity reached 50% after an elapsed time of 20 minutes, 25° C. is set as the target temperature from then on until an elapsed time of 29 minutes.

The temperature control unit 82 stops heating by the air conditioner 50 when the measured temperature becomes higher than the target temperature by a predetermined temperature. When the measured humidity is equal to or higher than the target humidity, the temperature adjustment control unit 82 stops heating when the measured temperature reaches a first heating stop temperature that is a predetermined temperature higher than the user-set temperature that is the target temperature. At the elapsed time of 22 minutes, the measured humidity was 50% and the measured temperature reached the first heating stop temperature of 26° C., so heating was stopped and the thermostat was turned off.

The temperature adjustment control unit 82 restarts heating by the air conditioner 50 when the measured temperature reaches a heating restart temperature that is a predetermined temperature lower than the user-set temperature while heating by the air conditioner 50 is stopped. do. Resuming heating means thermo-on.

Since the heating was stopped after the elapsed time of 23 minutes, the measured temperature gradually decreased, and when the elapsed time of 26 minutes reached the heating restart temperature of 24° C., the heating was restarted. This allows the temperature to be maintained.

Since the measured humidity has decreased to 45% in the elapsed time of 30 minutes and the measured temperature is 23° C. or higher, which is the humidity control start temperature, the temperature control section 82 sets the first pseudo set temperature to the target temperature and starts the control. Resume humidity control. This makes it easier to increase humidity.

In order to achieve the target temperature and target humidity, the temperature control unit 82 repeats the process of restarting the heating and the process of stopping the heating described above. This allows the temperature and humidity to be stabilized.

FIG. 5 is a diagram illustrating another example of control during heating operation of the air conditioner 50 and humidity control device 10 in FIG. 1. The user-set temperature and target humidity, and the measured temperature and measured humidity at the elapsed time of 0 minutes are the same as in FIG. 4 . FIG. 5 shows an example in which the measured temperature rises above the user-set temperature due to heating and humidification, but the measured humidity does not reach the target humidity.

The measured temperature and target temperature from the elapsed time of 0 minutes to 20 minutes are the same as in the example of FIG. 4, but the measured humidity is less than the target humidity.

When the measured humidity is less than the target humidity, after the measured temperature reaches a temperature higher than the user set temperature, the temperature adjustment control unit 82 sets a second pseudo set temperature higher than the user set temperature and lower than the measured temperature to the target temperature. Set to , and perform heating operation. The temperature control unit 82 increases the second pseudo set temperature in accordance with the increase in the measured temperature. The second pseudo set temperature is a temperature at which heating by the air conditioner 50 does not stop.

At the elapsed time of 21 minutes, the second pseudo set temperature of 25.5° C. is set as the target temperature. As a result, the request level is maintained at "1".

Even when the elapsed time is 22 minutes, the control is performed in the same way, and the request level is maintained at "1". Therefore, during the elapsed time of 21 minutes to 22 minutes, heating can be continued at the minimum heating capacity, and humidification can be continued without stopping heating. Therefore, humidity can be increased.

When the measured humidity is less than the target humidity and the measured temperature reaches a second heating stop temperature higher than the first heating stop temperature, the temperature control unit 82 sets the user set temperature as the target temperature and stops heating. When the measured humidity is less than the target humidity, the time until the heating is stopped is made longer than when the measured humidity is equal to or higher than the target humidity. At the elapsed time of 23 minutes, the measured humidity was 35% and the measured temperature reached the second heating stop temperature of 27°C, so the user-set temperature of 25°C was set as the target temperature, and the measured temperature was lower than the target temperature. When the temperature rises above a predetermined temperature, heating is stopped and the thermostat is turned off. Thereby, it is possible to prevent the temperature from becoming too high than the user-set temperature.

(Cooling operation)
During cooling operation, the control devices 80 and 86 make the temperature range in which the air conditioner 50 is cooled wider than the temperature range in which the air conditioner 56 is cooled, in order to increase the amount of dehumidification by the air conditioner 50.

The control device 80 performs cooling control of the air conditioner 50 by changing the temperature at which cooling is stopped based on whether the measured humidity is equal to or higher than the target humidity. Specifically, the control device 80 performs cooling control of the air conditioner 50 such that when the measured humidity is equal to or lower than the target humidity, when the measured temperature reaches a first cooling stop temperature that is lower than the user-set temperature by a predetermined temperature, Cooling by the air conditioner 50 is stopped. The control device 80 performs cooling control of the air conditioner 50 when, when the measured humidity is higher than the target humidity, the measured temperature reaches a second cooling stop temperature that is lower than the first cooling stop temperature by a predetermined temperature. 50 is stopped.

The control device 86 controls the cooling of the air conditioner 56 by not changing the temperature at which cooling is stopped, regardless of the measured humidity. Specifically, as a cooling control for the air conditioner 56, the control device 86 controls the air conditioner 56 when the measured temperature reaches the first cooling stop temperature, regardless of whether the measured humidity is below the target humidity. Stop cooling. Note that the temperature at which cooling is stopped is determined based on the user-set temperature, so when the user-set temperature is changed by the user, the temperature at which cooling is stopped is also changed in accordance with the user-set temperature.

Therefore, the air conditioner 50 can be cooled to the second cooling stop temperature, and the air conditioner 56 can be heated to the first cooling stop temperature, and as described above, the air conditioner 50 is cooled. The temperature range is wider than the temperature range in which the air conditioner 56 is cooled.

When the air conditioning system 100 starts cooling operation, the air conditioner 56 and the air conditioner 50 cool the air, and the humidity control device 10 humidifies the air with a smaller amount of spray than in the heating operation. Since the air cooled by the air conditioner 56 is sent directly to the indoor space, it can assist in lowering the temperature of the indoor space.

Thereafter, when the measured temperature reaches the first cooling stop temperature, the air conditioner 56 stops cooling, and if the measured humidity has reached the target humidity at this time, the air conditioner 50 also stops cooling.

On the other hand, even if the air conditioner 56 stops cooling due to the measured temperature reaching the first cooling stop temperature, if the measured humidity has not reached the target humidity at this time, the air conditioner 50 will stop cooling when the measured temperature reaches the first cooling stop temperature. Continue cooling until the second cooling stop temperature is reached. Since cooling is continued until the second cooling stop temperature is lower than the first cooling stop temperature, the humidity can be further lowered and brought closer to the target humidity.

The cooling operation of the air conditioner 50 will be described with reference to FIGS. 6 and 7.
FIG. 6 is a diagram illustrating an example of control of the air conditioner 50 and humidity control device 10 in FIG. 1 during cooling operation. In this example, the user-set temperature is 25° C., and the user-set humidity, which is the target humidity, is 50%. At an elapsed time of 0 minutes, the measured temperature is 29° C., which is higher than the user-set temperature, and the measured humidity is 70%, which is higher than the target humidity. Thereafter, due to cooling and dehumidification, the measured temperature reaches the user-set temperature after an elapsed time of 30 minutes, and the measured humidity reaches the target humidity.

When the air conditioner 50 performs cooling operation, the humidity control unit 84 dehumidifies the air conditioner 50 until the measured humidity becomes equal to or lower than the target humidity, and the temperature control unit 82 controls the humidity control unit 84 to dehumidify the air conditioner 50 until the measured humidity is higher than the target humidity. In this case, the cooling time by the air conditioner 50 is made longer than when the measured humidity is below the target humidity.

The temperature control unit 82 increases the cooling time by reducing the amount of heat absorbed per unit time by the air conditioner 50. Specifically, the temperature adjustment control unit 82 reduces the amount of heat absorbed by the air conditioner 50 per unit time by lowering the required level.

When the measured humidity is higher than the target humidity, the temperature control unit 82 sets the user-set temperature as the target temperature and performs cooling operation, and when the measured temperature approaches the target temperature, the temperature control unit 82 sets the first temperature higher than the measured temperature by a certain temperature. By setting the pseudo set temperature to the target temperature, the amount of heat absorbed per unit time of the air conditioner 50 is reduced to perform cooling operation. Specifically, the temperature adjustment control unit 82 sets the first pseudo-set temperature to the target temperature when the measured temperature becomes equal to or lower than the humidity control start temperature, which is 2° C. higher than the target temperature, which is the user-set temperature. The temperature adjustment control unit 82 lowers the first pseudo-set temperature in accordance with the decrease in the measured temperature, and sets the lower limit of the first pseudo-set temperature as the user-set temperature.

The first pseudo set temperature is a temperature at which cooling by the air conditioner 50 does not stop. Stopping cooling means turning off the thermostat of the air conditioner 50. With thermo off, the required level is zero. Cooling caused by residual heat after the thermostat is turned off is also considered to have stopped. Since the air conditioner 50 stops cooling when the measured temperature becomes lower than the target temperature by a predetermined temperature or more (1° C. in this example), the temperature control unit 82 controls the first pseudo set temperature so as not to stop cooling. I do.

From the elapsed time of 0 minutes to 3 minutes in FIG. 6, the target temperature is 25° C., the request level is set to the maximum “30”, the air is cooled, and the measured temperature is lowered. When the measured temperature reaches 27° C., which is 2° C. higher than the target temperature, in 4 minutes of elapsed time, the first pseudo set temperature of 27.5° C., which is 0.5° C. higher than the measured temperature, is set as the target temperature. As a result, based on the relationship shown in FIG. 3(a), the required level is set to "30" - "1" = "29", and the cooling capacity becomes low. The same control is performed for the elapsed time from 5 minutes to 29 minutes, and the required level gradually decreases. During the elapsed time from 4 minutes to 29 minutes, the rate of decrease in the measured temperature is slower than when the elapsed time is 3 minutes, and dehumidification can be continued without stopping cooling. Therefore, the humidity can be lowered, and the measured humidity reaches 50% of the target humidity in 30 minutes.

Furthermore, the measured temperature reached the user-set temperature after 29 minutes had elapsed. It can also be said that the temperature adjustment control unit 82 lengthens the cooling time required for the air conditioner 50 to reach the user-set temperature when the measured humidity is higher than the target humidity compared to when the measured humidity is lower than the target humidity.

When the measured humidity is equal to or lower than the target humidity, the temperature adjustment control unit 82 sets the user-set temperature as the target temperature and performs the cooling operation. Since the measured humidity reached 50% after an elapsed time of 30 minutes, 25° C. is set as the target temperature from then on until an elapsed time of 44 minutes.

The air conditioner 50 stops cooling when the measured temperature becomes a predetermined temperature lower than the target temperature. When the measured humidity is equal to or lower than the target humidity, the temperature adjustment control unit 82 stops cooling when the measured temperature reaches a first cooling stop temperature that is a predetermined temperature lower than the user-set temperature that is the target temperature. At the elapsed time of 36 minutes, the measured humidity was 50% and the measured temperature reached the first heating stop temperature of 24° C., so cooling was stopped and the thermostat was turned off.

The temperature adjustment control unit 82 restarts cooling by the air conditioner 50 when the measured temperature reaches a cooling restart temperature that is a predetermined temperature higher than the user-set temperature while cooling by the air conditioner 50 is stopped. do. Resuming cooling means thermo-on.

Since cooling was stopped after an elapsed time of 36 minutes, the measured temperature gradually rose, and after an elapsed time of 40 minutes, the measured temperature reached the cooling restart temperature of 26° C., so cooling was restarted. This allows the temperature to be maintained.

The measured humidity increases to 55% after an elapsed time of 45 minutes, and the measured temperature is below the humidity control start temperature of 27°C, so the temperature control unit 82 sets the first pseudo set temperature to the target temperature, Resume humidity control. This makes it easier to reduce humidity.

In order to achieve the target temperature and target humidity, the temperature adjustment control unit 82 repeats the process of restarting cooling and the process of stopping cooling described above. This allows the temperature and humidity to be stabilized.

FIG. 7 is a diagram illustrating another example of control during cooling operation of the air conditioner 50 and humidity control device 10 in FIG. 1. The user-set temperature and target humidity, and the measured temperature and measured humidity at the elapsed time of 0 minutes are the same as in FIG. 6 . FIG. 7 shows an example in which the measured temperature falls below the user-set temperature due to cooling and dehumidification, but the measured humidity does not reach the target humidity.

The measured temperature and target temperature from the elapsed time of 0 minutes to 30 minutes are the same as in the example of FIG. 6, but the measured humidity is less than the target humidity.

When the measured humidity is higher than the target humidity, after the measured temperature reaches a temperature lower than the user set temperature, the temperature adjustment control unit 82 sets a second pseudo set temperature lower than the user set temperature and higher than the measured temperature to the target temperature. Set to , and perform cooling operation. The temperature adjustment control unit 82 lowers the second pseudo set temperature in accordance with the decrease in the measured temperature. The second pseudo set temperature is a temperature at which cooling by the air conditioner 50 does not stop.

At the elapsed time of 34 minutes, the second pseudo set temperature of 24.5° C. is set as the target temperature. As a result, the request level is maintained at "1".

Even after 35 minutes have elapsed, the control is performed in the same way, and the request level remains at "1". Therefore, during the elapsed time of 34 minutes to 35 minutes, cooling can be continued at the minimum cooling capacity, and dehumidification can be continued without stopping cooling. Therefore, humidity can be reduced.

When the measured humidity is higher than the target humidity and the measured temperature reaches a second cooling stop temperature lower than the first cooling stop temperature, the temperature adjustment control unit 82 sets the user set temperature as the target temperature and stops cooling. When the measured humidity is higher than the target humidity, the time until cooling is stopped is made longer than when the measured humidity is lower than the target humidity. At the elapsed time of 36 minutes, the measured humidity was 55% and the measured temperature reached the second heating stop temperature of 23°C, so the user-set temperature of 25°C was set as the target temperature, and the measured temperature was lower than the target temperature. When the temperature drops below a predetermined level, cooling is stopped and the thermostat is turned off. Thereby, it is possible to prevent the temperature from becoming too low than the user-set temperature.

The main body of the device, system, or method in the present disclosure includes a computer. When this computer executes the program, the main functions of the device, system, or method of the present disclosure are realized. A computer includes, as its main hardware configuration, a processor that operates according to a program. The type of processor does not matter as long as it can implement a function by executing a program. A processor is composed of one or more electronic circuits including a semiconductor integrated circuit (IC) or a large scale integration (LSI). A plurality of electronic circuits may be integrated on one chip or may be provided on a plurality of chips. A plurality of chips may be integrated into one device, or may be provided in a plurality of devices. The program is recorded on a computer-readable non-temporary recording medium such as a ROM (Read Only Memory), an optical disk, or a hard disk drive. The program may be stored in the recording medium in advance, or may be supplied to the recording medium via a wide area communication network including the Internet.

According to this embodiment, the control devices 80 and 86 make the temperature range in which the air conditioner 50 is cooled wider than the temperature range in which the air conditioner 56 is cooled during the cooling operation. The cooling by the air conditioner 56 can be maintained for a longer period of time than the cooling by the air conditioner 56. Since cooling is maintained, humidity can be reduced.

Furthermore, during heating operation, the control devices 80 and 86 make the temperature range in which the air conditioner 50 is heated wider than the temperature range in which the air conditioner 56 is heated. The heating can be maintained longer than heating by the device 56. Since heating is maintained, the humidity due to purified water can be increased.

When the air conditioner 50 performs cooling operation, the temperature control unit 82 controls the air conditioner 50 to take a longer time to cool the air than when the measured humidity is higher than the target humidity than when the measured humidity is below the target humidity. By increasing the length, the humidity can be reduced.

Furthermore, when the air conditioner 50 performs heating operation, the temperature control unit 82 controls the heating time of the air conditioner 50 to be longer when the measured humidity is less than the target humidity than when the measured humidity is greater than or equal to the target humidity. By increasing the length, the humidity due to purified water can be increased.

From the above, the humidity can be brought closer to the target humidity. Therefore, both temperature control and humidity control can be achieved.

Further, the air conditioner 56, which is not connected to the humidity control device 10 and which prioritizes temperature control over humidity control, can assist in controlling the temperature of the indoor space.

The present disclosure has been described above based on examples. It will be understood by those skilled in the art that this example is merely an example, and that various modifications can be made to the combinations of these components or processing processes, and that such modifications are also within the scope of the present disclosure. .

For example, the air conditioning system 100 does not need to include the air conditioner 56, the control device 86, and the operating device 76, which are dedicated air conditioning devices. Moreover, the air conditioners 50 and 56 may not have a cooling function but only a heating function. Further, the air conditioners 50 and 56 may have only a cooling function without a heating function. When the air conditioners 50 and 56 have only a cooling function, the air conditioning system 100 does not need to include the humidity control device 10. According to these modifications, the degree of freedom in configuring the air conditioning system 100 can be improved.

An overview of one aspect of the present disclosure is as follows. An air conditioning system (100) according to an aspect of the present disclosure is an air conditioning system (100) that air-conditions a predetermined space, and includes an air conditioner (50) and a control device (80) that controls the air conditioner (50). and. The control device (80) includes a temperature adjustment control section (82) that controls cooling by the air conditioner (50) based on the target temperature, the user-set temperature, and the measured temperature of the space, the target humidity, and the space measurement temperature. and a humidity control unit (84) that controls dehumidification by the air conditioner (50) based on the measured humidity. When the air conditioner (50) performs cooling operation, the humidity control unit (84) dehumidifies until the measured humidity becomes below the target humidity, and the temperature control unit (82) dehumidifies until the measured humidity becomes lower than the target humidity. When the measured humidity is high, the cooling time by the air conditioner (50) is made longer than when the measured humidity is below the target humidity.

The temperature control unit (82) may lengthen the cooling time by reducing the amount of heat absorbed per unit time by the air conditioner (50).

When the measured humidity is lower than the target humidity, the temperature control unit (82) sets the user-set temperature as the target temperature and performs cooling operation, and when the measured humidity is higher than the target humidity, sets the user-set temperature as the target temperature. When the measured temperature approaches the target temperature, the first pseudo set temperature higher than the measured temperature is set as the target temperature, thereby reducing the amount of heat absorbed per unit time by the air conditioner (50). Cooling operation may also be performed.

The temperature control section (82) may lower the first pseudo-set temperature in accordance with the decrease in the measured temperature, and may set the lower limit of the first pseudo-set temperature as the user-set temperature.

The first pseudo set temperature may be a temperature at which cooling by the air conditioner (50) does not stop.

When the measured humidity is higher than the target humidity, the temperature adjustment control unit (82) performs cooling operation by setting a second pseudo-set temperature lower than the user-set temperature as the target temperature, and when the measured humidity is lower than the target humidity, The cooling operation may be performed by setting the user-set temperature to the target temperature.

When the measured humidity is higher than the target humidity, the temperature control section (82) sets a second pseudo-set temperature that is lower than the user-set temperature and higher than the measured temperature after the measured temperature reaches a temperature lower than the user-set temperature. If the target temperature is set and the cooling operation is performed, and the measured humidity is less than or equal to the target humidity, the user-set temperature may be set to the target temperature and the cooling operation is performed.

The temperature control section (82) may lower the second pseudo set temperature in accordance with the decrease in the measured temperature.

The second pseudo set temperature may be a temperature at which cooling by the air conditioner (50) does not stop.

The temperature control unit (82) stops cooling by the air conditioner (50) when the measured temperature becomes lower than the target temperature by a predetermined temperature, and when the measured humidity is lower than the target humidity, the measured temperature becomes lower than the target temperature. When the temperature reaches the first cooling stop temperature, which is a predetermined temperature lower than the user set temperature, cooling is stopped, and if the measured humidity is higher than the target humidity, the measured temperature changes to the second cooling stop temperature, which is lower than the first cooling stop temperature. By setting the user-set temperature as the target temperature and stopping cooling, the time taken to stop cooling will be longer when the measured humidity is higher than the target humidity than when the measured humidity is below the target humidity. You can.

When the measured temperature reaches a cooling restart temperature that is higher than the user-set temperature while cooling by the air conditioner (50) is stopped, the temperature control unit (82) controls the air conditioner (50) to stop cooling. Cooling may be resumed.

The temperature control unit (82) may repeat the process of restarting cooling and the process of stopping cooling in order to achieve the target temperature and target humidity.

The air conditioner (50) may provide a dehumidifying function by cooling.

It may further include a humidification and purification section (14) that supplies hypochlorous acid through humidification.

The air conditioning system according to the present disclosure is useful as a system that performs air conditioning control and humidity control on the air in a target space.

10 humidity control device, 12 ventilation section, 14 humidification purification section, 50 air conditioner, 56 air conditioner, 60 outdoor unit, 64 duct, 70 operating device, 76 operating device, 80 control device, 82 temperature control control section, 84 Humidity control unit, 86 control device, 100 air conditioning system.

Claims (11)

An air conditioning system that air-conditions a predetermined space,
an air conditioner that is connected to one outdoor unit and performs heating or cooling;
A control device that controls the air conditioner,
The control device includes:
a temperature adjustment control unit that controls cooling by the air conditioner based on a target temperature, a user-set temperature, and a measured temperature of the space;
a humidity control unit that controls dehumidification by the air conditioner based on the target humidity and the measured humidity of the space,
When the air conditioner performs cooling operation,
The temperature control unit controls cooling by the air conditioner,
The humidity control unit dehumidifies until the measured humidity becomes equal to or less than the target humidity,
The temperature control unit increases the cooling time by the air conditioner when the measured humidity is higher than the target humidity compared to when the measured humidity is lower than the target humidity,
The temperature control unit lengthens the cooling time by reducing the amount of heat absorbed per unit time of the air conditioner,
If the measured humidity is less than or equal to the target humidity, a user-set temperature is set as the target temperature and cooling operation is performed;
When the measured humidity is higher than the target humidity, the user-set temperature is set as the target temperature and cooling operation is performed, and when the measured temperature approaches the target temperature, the air conditioner is higher than the measured temperature and the air conditioner By setting the first pseudo set temperature, which is a temperature at which cooling does not stop, as the target temperature, the amount of heat absorbed by the air conditioner per unit time is reduced without turning off the thermostat for cooling of the air conditioner. Air conditioning system that performs cooling operation. The temperature control section includes:
When performing cooling operation by reducing the amount of heat absorbed per unit time of the air conditioner, lowering the required level, which is the ability to cool the air,
The air conditioning system according to claim 1, wherein the required level after lowering the required level is the required level at which the cooling thermo-off does not occur in the air conditioner . The temperature control section includes:
lowering the first pseudo set temperature in accordance with a decrease in the measured temperature;
The air conditioning system according to claim 1 or 2, wherein the lower limit of the first pseudo set temperature is the user set temperature. The temperature control section includes:
When the measured humidity is higher than the target humidity, after the measured temperature reaches a temperature lower than the user set temperature, a second pseudo set temperature lower than the user set temperature and higher than the measured temperature is set to the target temperature. Set to , perform cooling operation,
The air conditioning system according to any one of claims 1 to 3, wherein when the measured humidity is less than or equal to the target humidity, the user-set temperature is set to the target temperature and cooling operation is performed. The air conditioning system according to claim 4, wherein the temperature adjustment control section lowers the second pseudo set temperature in accordance with a decrease in the measured temperature. The air conditioning system according to claim 4 or 5, wherein the second pseudo set temperature is a temperature at which cooling by the air conditioner does not stop. The temperature control section includes:
When the measured temperature becomes a predetermined temperature lower than the target temperature, cooling by the air conditioner is stopped;
When the measured humidity is below the target humidity, when the measured temperature reaches a first cooling stop temperature that is lower than the user-set temperature, which is the target temperature, cooling is stopped;
When the measured humidity is higher than the target humidity, when the measured temperature reaches a second cooling stop temperature lower than the first cooling stop temperature, setting the user set temperature to the target temperature and stopping cooling; The air conditioning system according to any one of claims 4 to 6, wherein when the measured humidity is higher than the target humidity, the time until cooling is stopped is longer than when the measured humidity is lower than the target humidity. . The temperature adjustment control unit restarts cooling by the air conditioner when the measured temperature reaches a cooling restart temperature that is higher than the user-set temperature while cooling by the air conditioner is stopped. The air conditioning system according to claim 7. The air conditioning system according to claim 8, wherein the temperature adjustment control unit repeats a process of restarting cooling and a process of stopping cooling in order to achieve the target temperature and the target humidity. The air conditioning system according to any one of claims 1 to 9, wherein the air conditioner provides a dehumidifying function by cooling. The air conditioning system according to any one of claims 1 to 10, further comprising a humidifying and purifying section that supplies hypochlorous acid through humidification.

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