JP2021188811A - Air conditioning system, air conditioning device and air conditioning control method - Google Patents

Abstract

To provide an air conditioning system that can provide comfortable air conditioning as a whole even when an air conditioning load of sensible heat and latent heat varies depending on a room.SOLUTION: An air conditioner for conditioning air of multiple rooms in a building includes a control board 22 that includes: a temperature/humidity acquisition unit 200 that acquires data from a sensor that measures temperature and humidity of each room; and an operation mode determination unit 202 that determines an operation mode on the basis of a difference between temperature acquired by the temperature/humidity acquisition unit 200 and a target temperature and a difference between humidity acquired by the temperature/humidity acquisition unit 200 and a target humidity.SELECTED DRAWING: Figure 5

Description

The present disclosure relates to an air conditioning system, an air conditioning device, and an air conditioning control method.

In recent years, the heat insulation and airtightness of houses have been increasing, and the energy required for air conditioning has been decreasing, and there is an increasing demand for a more comfortable and healthy living environment. In order to meet such demands, there are an increasing number of cases where an air-conditioning system called a so-called whole-building air-conditioning system, which automatically air-conditions the entire house for 24 hours continuously, is adopted.

In the above-mentioned air-conditioning system, for example, as disclosed in Patent Document 1, a method of distributing air harmonious by one air-conditioning device to each partitioned room through a duct is generally known. There is.

Japanese Unexamined Patent Publication No. 2002-340382

In the conventional air-conditioning system described above, a so-called VAV (Variable Air Volume) method is used when the air-conditioning device blows out harmonious air to each room, and the air volume is variably controlled. For example, in the case of cooling operation in the summer, the air conditioner supplies air in harmony with the common temperature and humidity to all the rooms, but the room temperature is higher than the target temperature, that is, cooling. The larger the sensible heat load, the closer the temperature of the room to the target temperature by increasing the amount of air blown into the room. On the other hand, dehumidification may be preferable to cooling for a room with high humidity in the room, that is, a room with a large latent heat load for cooling.
However, when the relationship between temperature and humidity in a room, that is, the sensible heat and latent heat air conditioning load differs from room to room, the user should set the operation mode of the air conditioner to cooling or dehumidifying. You will be at a loss for judgment. That is, there are cases where the user cannot appropriately select the operation mode for comfortably air-conditioning the building as a whole.

The present disclosure has been made to solve the above problems, and in a system for air-conditioning a plurality of rooms with one air-conditioning device, even if the air-conditioning load of sensible heat and latent heat differs depending on the room, the whole is disclosed. It is an object of the present invention to provide an air-conditioning system, an air-conditioning device, and an air-conditioning control method capable of comfortably air-conditioning.

In order to achieve the above object, the air conditioning system according to this disclosure is
Air conditioning equipped with a temperature sensor that measures the temperature of each room in a plurality of rooms in the building, an air conditioner that air-conditions each room, and a humidity sensor that measures the humidity in the vicinity of the suction port of the air conditioner. It ’s a system,
The air conditioner is
A determination means for determining an operation mode is provided based on the difference between the temperature measured by the temperature sensor and the target temperature and the difference between the humidity measured by the humidity sensor and the target humidity.

In the air conditioning system according to this disclosure
The determining means determines the operation mode based on the difference between the temperature measured by the temperature sensor and the target temperature and the difference between the humidity measured by the humidity sensor and the target humidity. That is, the determining means determines the operation mode based on the relationship between the sensible heat air conditioning load, which is the difference between the temperature and the target temperature, and the latent heat air conditioning load, which is the difference between the humidity and the target humidity.
As a result, even if the sensible heat and latent heat air conditioning loads differ depending on the room, air conditioning can be comfortably performed as a whole.

The figure which shows an example of the structure of the air-conditioning system which concerns on embodiment of this disclosure. The figure which shows an example of the structure of an air conditioner A diagram showing an example of a refrigerant circuit together with the configuration of a heat source device. The figure which shows an example of the structure of the control board provided in the air conditioner. The figure which shows an example of the functional structure of a control board Both (a) to (c) are diagrams for explaining the determination of the operation mode. A diagram for explaining the determination of the operation mode according to the priority. The figure for demonstrating the determination of the operation mode according to the number of determinations. A diagram for explaining the determination of the operation mode according to the priority specified by the user. Diagram for explaining the determination of the operation mode according to the time zone and priority specified by the user. A diagram for explaining the determination of the operation mode according to the time zone specified by the user and the priority of the room type. Diagram for explaining the determination of the operation mode with the highest priority on cooling and the determination of the outlet temperature. A flowchart showing an example of the air conditioning control process according to the embodiment of the present disclosure. Diagram for explaining the determination of the operation mode in winter Diagram for explaining the determination of the amount of humidification when determining the heating humidification

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In the following embodiment, the case where the air conditioning system is installed in a detached house as an example of a building will be described, but in addition, when the air conditioning system is installed in a building such as an apartment house or an office building, The present disclosure can be applied as well. That is, the embodiments described below are for illustration purposes only and do not limit the scope of the present disclosure. Therefore, those skilled in the art can adopt embodiments in which each or all of these elements are replaced with equivalent ones, but these embodiments are also included in the scope of the present disclosure. That is, the present disclosure is not limited to the embodiments described below, and can be variously modified without departing from the spirit of the present disclosure.
Further, in each of the figures described in the following embodiments, the same reference numerals are given to common elements.

(Embodiment 1)
FIG. 1 is a diagram showing an overall configuration of an air conditioning system 1 according to the first embodiment of the present disclosure. The air-conditioning system 1 is a so-called whole-building air-conditioning system that realizes air-conditioning of a plurality of rooms in a building such as a detached house, an apartment house, or an office building by one air-conditioning device.
As shown in FIG. 1, the air conditioning system 1 includes an air conditioning device 2, a heat source device 3, a temperature / humidity sensor 4 (4a to 4c), a remote controller 5 (5a to 5c), and a damper 6 (6a to 6c). The rooms A to C are air-conditioned.
A duct D connecting the air conditioner 2 and each of the rooms A to C is provided in the building. Further, in the present embodiment, the case where the air conditioning system 1 is installed in a detached house will be described as an example.

First, each configuration of the air conditioning system 1 will be briefly described, and then the most characteristic configurations of the air conditioning device 2 and the heat source device 3 will be described in detail.

The air conditioner 2 is installed in a space different from the rooms A to C, such as a machine room, a corridor, an under-ceiling, and an underfloor in a building, and sucks in and harmonizes the indoor air RA returned from each room. , The supplied air SA after harmonization is supplied to the rooms A to C through the duct D.

The heat source device 3 is arranged outside the building, for example, and supplies cold heat or hot heat to the air conditioner 2 through a pipe connected to the air conditioner 2.

The temperature / humidity sensors 4 (4a to 4c) are installed in the rooms A to C, respectively, and measure the temperature and humidity in the room. The temperature / humidity sensor 4 includes a wired or wireless communication interface, and periodically transmits measurement data about the measured temperature and humidity to the air conditioner 2. Further, the temperature / humidity sensor 4 may immediately transmit the measurement data to the air conditioner 2 in response to the request from the air conditioner 2.
Instead of the temperature / humidity sensor 4, a temperature sensor may be installed in each room, while the humidity sensor may be arranged in the vicinity of the suction port for sucking the indoor air RA in the air conditioner 2. In this case, it is possible to estimate the humidity of each room from the relationship between the temperature of each room measured by the temperature sensor and the humidity of the indoor air RA.

The remote controllers 5 (5a to 5c) are installed on the walls near the entrances of the rooms A to C, respectively, and receive operations related to air conditioning from users who use the rooms. The remote controller 5 is provided with a wired or wireless communication interface. For example, when the target temperature in the room is changed by the user's operation, the operation data including the target temperature value is transmitted to the air conditioner 2. Send.

The dampers 6 (6a to 6c) are, for example, arranged in each branch path where the duct D branches to connect with the rooms A to C, and supply the supply air SA into the room according to a command from the air conditioner 2. Open and close the air supply path. The damper 6 can adjust the opening degree when opening and closing the air supply path in, for example, in multiple stages.

Subsequently, the configuration of the air conditioner 2 will be described with reference to FIG. FIG. 2 is a diagram showing an example of the configuration of the air conditioner 2.
As shown in FIG. 2, the air conditioner 2 includes a blower 20, heat exchangers 21 (21a, 21b), and a control board 22. Further, the air conditioner 2 is provided with a suction port 23 and a supply port 24. Note that FIG. 2 shows a case where the ventilation device 7 and the humidity control device 8 are connected to the air conditioner 2.

The blower 20 sucks the air that has circulated through the building and returned, that is, the indoor air RA of each room from the suction port 23, and supplies the sucked air to the heat exchanger 21. Then, the blower 20 sends out the air heat-exchanged by the heat exchanger 21, that is, the harmonized supply air SA from the supply port 24. The duct D described above is connected to the supply port 24, and the supply air SA sent out by the blower 20 is supplied to the rooms A to C through the duct D and the opened damper 6.

The heat exchangers 21 (21a, 21b) exchange heat between the refrigerant supplied from the heat source device 3 and the indoor air RA sucked by the blower 20. In addition, cold water or hot water may be used instead of a refrigerant.
That is, the air conditioner 2 may be a direct expansion type indoor unit connected to the heat source device 3 via a refrigerant pipe, or an indirect type indoor unit connected to the heat source device 3 via a water pipe. , So-called fan coil unit may be used.
The roles of the heat exchanger 21a and the heat exchanger 21b will be described together with the configuration of the heat source device 3 described later.

The control board 22 controls the entire air conditioning system 1. The details of the control board 22 will be described again after explaining the configuration of the heat source device 3.

The ventilation device 7 includes a total heat exchanger 71, and ventilates while exchanging heat between the indoor air RA and the outdoor air OA.
For example, the ventilation device 7 sucks in the indoor air RA of each room by a blower (not shown), passes through the total heat exchanger 71, and then discharges it to the outside as exhaust air EA. Further, the ventilation device 7 sucks in the same amount of outdoor air OA as the discharged air EA by another blower (not shown), passes it through the total heat exchanger 71, and then supplies it into the air conditioner 2.
The ventilation device 7 is communicably connected to the control board 22 of the air conditioner 2, and the drive of these blowers is controlled according to a command from the control board 22.

The humidity control device 8 includes a humidity control material 81, and controls the humidity of the air in the air conditioner 2.
The humidity control material 81 is, for example, a desiccant rotor, a Perche element, or the like, and adsorbs moisture contained in the outdoor air OA, supplies the moisture to the air conditioner 2, and supplies the indoor air RA to the air conditioner 2. And the humidity of the outdoor air OA is adjusted.
The humidity control device 8 may be a humidification system using water supply. Further, the humidity control device 8 is communicably connected to the control board 22 of the air conditioner 2, and such humidity control is controlled according to a command from the control board 22.

Next, the configuration of the heat source device 3 will be described with reference to FIG. FIG. 3 is a diagram showing an example of a refrigerant circuit together with the configuration of the heat source device 3. Note that FIG. 3 shows a heat source device 3 connected to the direct expansion type air conditioner 2 via a refrigerant pipe.
As shown in FIG. 3, the heat source device 3 includes a refrigerant circuit of the system X and a refrigerant circuit of the system Y. That is, the refrigerant circuit of the system X has a heat exchanger 31a that exchanges heat between the refrigerant and the outside air, a compressor 32a that compresses the refrigerant, a four-way valve 33a that switches the flow direction of the refrigerant, and decompresses and expands the refrigerant. It is formed by an expansion valve 34a and a heat exchanger 21a of the air conditioner 2. Similarly, the refrigerant circuit of the system Y is formed by a heat exchanger 31b, a compressor 32b, a four-way valve 33b, an expansion valve 34b, and a heat exchanger 21b of the air conditioner 2. In addition to these, the heat source device 3 includes a blower (not shown) for taking in outside air and a control board (not shown) for controlling each component.
When the operation mode of the air conditioner 2 is cooling, the heat source device 3 cools the two refrigerant circuits and passes through the expansion valves 34 (34a, 34b), for example, a low pressure refrigerant of about 15 ° C. to the air conditioner. Supply to 2.
On the other hand, when the operation mode of the air conditioner 2 is heating, the heat source device 3 heats the two refrigerant circuits and passes through the compressor 32 (32a, 32b) and the four-way valve 33 (33a, 33b). For example, a high-pressure refrigerant of about 45 ° C. is supplied to the air conditioner 2.

Further, when the operation mode of the air conditioner 2 is dehumidification, the heat source device 3 operates, for example, cooling the refrigerant circuit of the system X, and air-conditions a refrigerant of about 7 ° C., which is lower than the dew point temperature of the indoor air RA. Supply to device 2. In this case, in the air conditioner 2, when the indoor air RA passes through the heat exchanger 21a, the moisture in the air condenses on the surface of the heat exchanger 21a and is dehumidified.
The refrigerant circuit of the system Y may be cooled in the same manner as the system X according to the relationship between the temperature and humidity in the room, and the operation is performed so that the room does not become too cold during dehumidification. You may stop it. Alternatively, the refrigerant circuit of the system Y may be heated and reheated and dehumidified. As described above, the operation of the refrigerant circuit of the system Y can be switched according to the sensible heat and the latent heat of the air conditioning load.

In the heat source device 3 of FIG. 3 above, the case where two systems of refrigerant circuits are provided has been described, but one system of refrigerant circuits may be used. In the case of providing one system of refrigerant circuits, heat exchangers 21a and 21b of the air conditioner 2 are connected in series, and an expansion valve 34 is arranged between the two heat exchangers 21 to enable reheat dehumidification. It may be configured.

Further, in FIG. 3 above, the heat source device 3 connected to the direct expansion type air conditioner 2 via the refrigerant pipe has been described, but the heat source device 3 connected to the indirect type air conditioner 2 via the water pipe has been described. May be. In this case, the heat source device 3 is a so-called chiller device that regulates the temperature of the cold / hot water returned from the air conditioner 2 and supplies it to the air conditioner 2. Since the relationship between the operation mode of the air conditioner 2 and the temperature of the cold / hot water supplied by the heat source device 3 is the same as that of the direct expansion type described above, the description thereof will be omitted.

Subsequently, the configuration of the control board 22 in the air conditioner 2 will be described with reference to FIG. FIG. 4 is a diagram showing an example of the configuration of the control board 22.
As shown in FIG. 4, the control board 22 includes, for example, a CPU (Central Processing Unit) 220, a communication interface 221, a ROM (Read Only Memory) 222, a RAM (Random Access Memory) 223, and a secondary storage device. It is equipped with 224. These components are connected to each other via a bus 225.

The CPU 220 comprehensively controls the air conditioning system 1. The details of the functions realized by the CPU 220 will be described later. The communication interface 221 is one or more for wireless communication or wired communication with a control board (not shown) of the heat source device 3, a temperature / humidity sensor 4, a remote controller 5, a damper 6, a ventilation device 7, and a humidity control device 8. It is equipped with a NIC (Network Interface Card controller).

The ROM 222 stores a plurality of firmwares and data used when executing these firmwares. The RAM 223 is used as a work area of the CPU 220. The secondary storage device 224 is composed of a readable / writable non-volatile semiconductor memory such as an EEPROM or a flash memory. The secondary storage device 224 stores various programs including an air conditioning control program related to air conditioning control, and data used when executing these programs.

Subsequently, the function of such a control board 22 will be described with reference to FIG. FIG. 5 is a diagram showing an example of the functional configuration of the control board 22.
As shown in FIG. 5, functionally, the control board 22 includes a temperature / humidity acquisition unit 200 which is an example of acquisition means, a remote control operation acquisition unit 201, and an operation mode determination unit 202 which is an example of determination means. It is provided with a control command unit 203. Each of these functional units is realized by the CPU 220 executing an air conditioning control program stored in the secondary storage device 224.

The temperature / humidity acquisition unit 200 receives, for example, measurement data periodically sent from each of the temperature / humidity sensors 4, and acquires the values of the temperature and humidity in the room included in the received measurement data. The temperature / humidity acquisition unit 200 stores the acquired temperature and humidity values of each room in the temperature / humidity table. The temperature / humidity table is a data table in which information for identifying a room and values of temperature and humidity are stored in association with each other, and is stored in, for example, a secondary storage device 224.

When the remote control operation acquisition unit 201 receives the above-mentioned operation data from the remote control 5, the remote control operation acquisition unit 201 receives the above-mentioned operation data. The content of the operation included in the received operation data includes, for example, the value of the target temperature. The remote control operation acquisition unit 201 stores the acquired operation contents in the user operation table. The user operation table is a data table in which the information for identifying the room and the operation content of the user are stored in association with each other, and is stored in, for example, the secondary storage device 224.

The operation mode determination unit 202 determines the operation mode of the air conditioner 2 based on the relationship between the temperature and humidity of each room. The air conditioner 2 can be operated by switching to any operation mode from, for example, cooling, dehumidification, humidification, ventilation, ventilation, and heating.
For example, if the season is summer, the operation mode determination unit 202 determines any operation mode from cooling, dehumidification, ventilation, and ventilation. If the season is winter, the operation mode determination unit 202 determines any operation mode from heating, humidification, ventilation, and ventilation.
Hereinafter, a method for determining the operation mode of the air conditioner 2 by the operation mode determination unit 202 will be specifically described by taking the case of summer as an example.

First, the operation mode determination unit 202 determines the operation mode of each room. That is, the operation mode determination unit 202 determines the operation mode of the room based on the difference between the indoor temperature and the target temperature and the difference between the indoor humidity and the target humidity. In other words, the operation mode determination unit 202 determines the operation mode of each room based on the relationship between the cooling sensible heat load and the cooling latent heat load of each room.
Specifically, the operation mode determination unit 202 determines which of the four quadrants shown in FIG. 6A corresponds to the difference between the temperature and the target temperature and the difference between the humidity and the target humidity. , Determine the operating mode of the room. In FIG. 6A, the horizontal axis is "temperature-target temperature", that is, the cooling sensible heat load, and the vertical axis is "humidity-target humidity", that is, the cooling latent heat load. It stipulates that the third quadrant is cooling and the fourth quadrant is dehumidifying. That is, FIG. 6A is a determination condition in which the operation mode is defined corresponding to the four quadrants.
Then, when the difference between the room temperature and the target temperature is positive, the operation mode determining unit 202 determines that the operation mode of the room is cooling. Even if the difference is 0, it is positive for convenience. Further, when the difference between the indoor temperature and the target temperature is negative and the difference between the indoor humidity and the target humidity is positive, the operation mode determining unit 202 determines that the operation mode of the room is dehumidified. .. When the difference between the indoor temperature and the target temperature is negative and the difference between the indoor humidity and the target humidity is negative, the operation mode determining unit 202 determines that the operation mode of the room is cooling. .. In this third quadrant, even if the operation mode is determined to be cooling, the compressor 32 of the heat source device 3 described above is stopped, so that the operation is the same as that of blowing air.
Instead of such FIG. 6A, the operation mode may be determined using FIG. 6B or FIG. 6C. FIG. 6 (b) differs from FIG. 6 (a) only in that the third quadrant is ventilation, and FIG. 6 (c) is ventilation in the third quadrant.
Therefore, when the difference between the indoor temperature and the target temperature is negative and the difference between the indoor humidity and the target humidity is negative, the operation mode determination unit 202 blows or ventilates the operation mode of the room. Is determined.

The operation mode determination unit 202 determines the operation mode of the air conditioner 2 from the operation modes of each room determined in this way.
That is, if the determined operation modes of the rooms match, the operation mode determination unit 202 determines the matched operation modes as the operation mode of the air conditioner 2.
On the other hand, when the determined operation modes of the rooms do not match, the operation mode determination unit 202 determines the operation mode of the air conditioner 2 according to various methods described below.

As a first method, the operation mode determination unit 202 determines the operation mode of the air conditioner 2 according to the priority of the determined operation mode. The priority of the operation mode is defined as, for example, cooling, dehumidification, and ventilation / ventilation in descending order. In addition, ventilation / ventilation indicates ventilation or ventilation.
For example, as shown in the examples (1) to (3) of FIG. 7, if there is even one room determined to be the highest priority cooling, the operation mode determination unit 202 uses the cooling to operate the air conditioner 2. Decide on the mode. Further, as shown in the example (4) of FIG. 7, when there is no room determined to be air-conditioned and there is at least one room determined to be dehumidified, the operation mode determination unit 202 dehumidifies the dehumidification. The operation mode of the device 2 is determined. Then, as shown in the example (5) of FIG. 7, when all the rooms are determined to be blown / ventilated, the operation mode determining unit 202 determines the blown / ventilated to the operation mode of the air conditioner 2. ..

In this way, by performing cooling, dehumidification, and ventilation / ventilation in descending order of priority, air conditioning can be comfortably controlled as a whole even when there are a plurality of rooms. This is because the order of temperature and humidity affects comfort, and in summer, lowering the temperature inside the room to make it feel cool is the basis of air conditioning. Further, in cooling, the temperature of the heat exchanger 21, that is, the blowing temperature is raised as compared with the dehumidification, and instead, the power consumption of the heat source device 3 is increased by controlling so that the blowing air volume of the air conditioner 2 is increased. It is suppressed and the operation efficiency is improved.

As the next method, the operation mode determination unit 202 determines the operation mode of the air conditioner 2 according to the number of determinations.
For example, as shown in Examples (6) to (8) of FIG. 8, the operation mode determining unit 202 determines the operation mode having the largest number of determinations as the operation mode of the air conditioner 2. Further, as shown in the example (9) of FIG. 8, when the number of determinations is the same, the operation mode determination unit 202 air-conditions in the order of high priority, that is, cooling, dehumidification, ventilation / ventilation. The operation mode of the device 2 is determined. That is, in the example (9) of FIG. 8, the highest priority cooling is determined to be the operation mode of the air conditioner 2.
The number of judgments does not have to be in units of rooms. For example, since a plurality of temperature / humidity sensors 4 may be arranged in a large room such as an LDK (living / dining / kitchen), the number of determinations may be totaled for each sensor.
In addition, instead of using the number of judgments, the total floor area of judgments, which is the total floor area of each judgment room, is used, or the total judgment capacity, which is the total heat load according to the size of each judgment room, is used. May be good.

As a result, air conditioning can be comfortably controlled as a whole in a building having a plurality of rooms of the same size.

Further, as the next method, the operation mode determination unit 202 determines the operation mode of the air conditioner 2 according to the priority of the room designated by the user.
For example, as shown in FIG. 9, the priority of the room designated by the user is registered in advance in the air conditioner 2. In FIG. 9, room A, room C, and room B are designated in descending order of priority, and can be registered from, for example, the remote controller 5. In addition, the operation buttons arranged on the air conditioner 2 may be used, or a user terminal such as a smartphone may be used so that the air conditioner 2 can be registered. The registration operation may be performed by the user or by the installation contractor.
The operation mode determination unit 202 determines the operation mode of the air conditioner 2 according to the priority of the room designated by the user in this way. For example, as shown in FIG. 9, when the room A is determined to be air-conditioned, the room B is determined to be dehumidified, and the room C is determined to be air-conditioned, the operation mode determination unit 202 determines the room A with the highest priority. The cooled cooling is determined to be the operation mode of the air conditioner 2.

As a result, the user's intention can be reflected, such as giving priority to the judgment in the room that is frequently used, and the air conditioning can be controlled comfortably as a whole.

Further, as the next method, the operation mode determination unit 202 determines the operation mode of the air conditioner 2 according to the time zone designated by the user and the priority of the room.
For example, as shown in FIG. 10, the time zone designated by the user and the priority of the room are registered in advance in the air conditioner 2. In FIG. 10, room B, room C, and room A are designated in descending order of priority from 0:00 to 6:00, which is the night time zone, and from 6:00 to 24, which is the daytime zone. At times, rooms A, C, and B are designated in descending order of priority.
The operation mode determination unit 202 determines the operation mode of the air conditioner 2 according to the time zone designated by the user and the priority of the room. For example, as shown in the upper part of FIG. 10, when room A is determined to be air-conditioned, room B is determined to be dehumidified, and room C is determined to be air-conditioned, the operation mode determination unit 202 determines. , The dehumidification determined in the room B having the highest priority is determined as the operation mode of the air conditioner 2. Further, as shown in the lower part of FIG. 10, when the room A is determined to be air-conditioned, the room B is determined to be dehumidified, and the room C is determined to be air-conditioned during the daytime, the operation mode determination unit 202 determines. , The cooling determined in the room A having the highest priority is determined as the operation mode of the air conditioner 2.

As a result, even if the frequently used rooms are different between day and night, the user's intention can be reflected in detail, such as giving priority to the judgment in the frequently used room, and the air conditioning can be controlled comfortably as a whole.

Further, as the next method, the operation mode determination unit 202 determines the operation mode of the air conditioner 2 according to the time zone specified by the user and the priority order of the room type.
For example, as shown in FIG. 11, the time zone specified by the user and the priority of the room type are registered in advance in the air conditioner 2. In FIG. 11, the bedroom, the children's room, and the LDK are designated in descending order of priority from 0:00 to 6:00, which is the night time zone, and from 6:00 to 24:00, which is the daytime zone. , LDK, children's room, and bedroom are designated in descending order of priority.
The operation mode determination unit 202 determines the operation mode of the air conditioner 2 according to the time zone designated by the user and the priority of the room type. For example, as shown in the upper part of FIG. 11, when the LDK is determined to be air-conditioned, the bedroom is determined to be dehumidified, and the child's room is determined to be air-conditioned during the night time, the operation mode determination unit 202 is the most. The dehumidification determined in the priority bedroom is determined as the operation mode of the air conditioner 2. Further, as shown in the lower part of FIG. 11, when the LDK is determined to be air-conditioned, the bedroom is determined to be dehumidified, and the child's room is determined to be air-conditioned during the daytime, the operation mode determination unit 202 is the most. The cooling determined by the priority LDK is determined as the operation mode of the air conditioner 2.

As a result, even if the room type that is frequently used differs between day and night, the user's intention can be reflected in detail, such as giving priority to the judgment in the room that is frequently used, and the air conditioning can be controlled comfortably as a whole.

Further, as the next method, the operation mode determination unit 202 determines the operation mode of the air conditioner 2 with cooling as the highest priority, and determines the blowing temperature according to the ratio between the cooling determination and the dehumidification determination.
For example, as shown in Examples (10) to (13) of FIG. 12, the operation mode determination unit 202 determines the operation mode of the air conditioner 2 to be cooling if the number of determinations for cooling is one or more. Then, the operation mode determination unit 202 determines the temperature of the heat exchanger 21 as the blowout temperature according to the ratio of the cooling determination and the dehumidification determination. For example, in the example (10) of FIG. 12, since the cooling determination is 3 rooms and the dehumidification determination is 0 room, the ratio between the cooling determination and the dehumidification determination is 100: 0 as a percentage ratio of the heat exchanger 21. The temperature is determined to be T1. Further, in the example (11) of FIG. 12, since the cooling determination is made in 2 rooms and the dehumidifying determination is made in 1 room, the ratio between the cooling determination and the dehumidifying determination is 67:33, and the temperature of the heat exchanger 21 is T1. It is decided to be the following T2. Further, in the example (12) of FIG. 12, since the cooling determination is one room and the dehumidification determination is one room, the ratio between the cooling determination and the dehumidification determination is 50:50, and the temperature of the heat exchanger 21 is T2 or less. It is decided to be T3. In the example (13) of FIG. 12, since the cooling determination is for one room and the dehumidification determination is for two rooms, the ratio between the cooling determination and the dehumidification determination is 33:67, and the temperature of the heat exchanger 21 is T3 or less. It is decided to be T4.
Although FIG. 12 has described the case where the operation mode of the air conditioner 2 is determined with cooling as the highest priority, the method for determining the operation mode may be any of FIGS. 8 to 11 described above, and the cooling determination and the dehumidification determination may be performed. The blowing temperature may be determined in the same manner according to the ratio of.

In this way, when the ratio of dehumidification determination is high and it is desired to increase the dehumidification amount, by lowering the temperature of the heat exchanger 21, the moisture in the air passing through the heat exchanger 21 is dewed and the dehumidification amount increases. .. Along with this, the temperature of the air blown out decreases, but by reducing the amount of air blown out instead, it is possible to prevent the room from becoming too cold. It should be noted that the temperature of the heat exchanger 21, that is, the blowing temperature is lowered due to the influence of reducing the blowing air volume. Further, the refrigerant temperature or the water temperature sent to the heat exchanger 21 may be adjusted by controlling the rotation speed of the compressor 32 of the heat source device 3 described above.

Returning to FIG. 5, the control command unit 203 sends a command to the control board of the heat source device 3 and controls the blower 20 and the heat exchanger 21 according to the operation mode determined by the operation mode determination unit 202.
For example, when the operation mode is determined to be cooling, the control command unit 203 commands the control board of the heat source device 3 to perform cooling operation, and appropriately controls the rotation speed of the blower 20 and the temperature of the heat exchanger 21. do.
Further, when the operation mode is determined to be blown, the control command unit 203 commands the control board of the heat source device 3 to stop and appropriately controls the rotation speed of the blower 20.
When the operation mode is determined to be dehumidifying, the control command unit 203 sends the following command to the control board of the heat source device 3 and appropriately controls the rotation speed of the blower 20.
For example, the control command unit 203 causes the refrigerant circuit of the system X to perform a cooling operation, and supplies a refrigerant having a temperature lower than the dew point temperature of the indoor air RA to the air conditioner 2. The refrigerant circuit of system Y may be operated in the same manner as system X, depending on the relationship between the temperature and humidity in the room, and the operation is performed so that the room temperature does not become too cold during dehumidification. You may stop it. Alternatively, the refrigerant circuit of the system Y may be heated and reheated and dehumidified.

Hereinafter, the operation of the air conditioning system 1 having such a configuration will be described with reference to FIG. FIG. 13 is a flowchart for explaining an example of the air conditioning control process executed by the air conditioning device 2 according to the first embodiment of the present disclosure.
The air conditioning control process shown in FIG. 13 is assumed to be repeatedly executed in the air conditioning device 2.

First, the air conditioner 2 determines whether or not the operation data has been acquired (step S11). That is, the control board 22 of the air conditioner 2 determines whether or not the remote controller 5 is operated by the user and the operation data is sent from the remote controller 5.
When the air conditioner 2 determines that the operation data has not been acquired (step S11; No), the process proceeds to step S13 described later.

On the other hand, when it is determined that the operation data has been acquired (step S11; Yes), the air conditioner 2 determines whether or not the target temperature has been changed (step S12). That is, the control board 22 determines whether or not the operation data includes the changed target temperature.

When the air conditioner 2 determines that the target temperature has not changed (step S12; No), the air conditioner 2 acquires the temperature and humidity of each room that are periodically sent (step S13). That is, the control board 22 receives the measurement data periodically sent from each of the temperature / humidity sensors 4, and acquires the values of the temperature and humidity in the room included in the received measurement data.

The air conditioner 2 determines whether or not the acquired temperature and humidity have changed beyond the standard (step S14). For example, the control board 22 determines whether the difference between the indoor temperature and the target temperature becomes larger than the reference, or the difference between the indoor humidity and the target humidity becomes larger than the reference.

When the air conditioner 2 determines that there is no change exceeding the reference (step S14; No), the process returns to step S11 described above.
On the other hand, when it is determined that the fluctuation exceeds the reference (step S14; Yes), the air conditioner 2 proceeds to the process in step S16 described later.

When it is determined in step S12 described above that the target temperature has changed (step S12; Yes), the air conditioner 2 acquires the temperature and humidity of each room (step S15). That is, the control board 22 requests the temperature / humidity sensor 4 for the measurement data, and immediately responds to the control board 22 to acquire the values of the temperature and humidity in the room included in the measurement data sent. Note that this step S15 is an example of the acquisition step.

The air conditioner 2 determines the operation mode of each room (step S16). That is, the control board 22 determines the operation mode of the room based on the difference between the room temperature and the target temperature and the difference between the room humidity and the target humidity. In other words, the control board 22 determines the operation mode of each room based on the relationship between the cooling sensible heat load and the cooling latent heat load of each room.
Specifically, in the control board 22, which of the four quadrants shown in FIG. 6A described above corresponds to the difference between the temperature and the target temperature and the difference between the humidity and the target humidity, for example. Accordingly, the operation mode of the room is determined.

The air conditioner 2 determines the operation mode from each determination (step S17). That is, if the determined operation modes of the rooms match, the control board 22 determines the matched operation modes as the operation modes of the air conditioner 2.
On the other hand, when the determined operation modes of the rooms do not match, the control board 22 determines the operation mode of the air conditioner 2 according to any of the methods shown in FIGS. 7 to 12 described above.
That is, according to the method shown in FIG. 7, the control board 22 determines the operation mode of the air conditioner 2 according to the priority order of the determined operation modes. Further, according to the method shown in FIG. 8, the control board 22 determines the operation mode of the air conditioner 2 according to the number of determinations. Further, according to the method shown in FIG. 9, the control board 22 determines the operation mode of the air conditioner 2 according to the priority of the room designated by the user. Further, according to the method shown in FIG. 10, the control board 22 determines the operation mode of the air conditioner 2 according to the time zone specified by the user and the priority of the room. Further, according to the method shown in FIG. 11, the control board 22 determines the operation mode of the air conditioner 2 according to the time zone specified by the user and the priority of the room type. Further, according to the method shown in FIG. 12, the operation mode of the air conditioner 2 is determined with cooling as the highest priority, and the blowing temperature is determined according to the ratio between the cooling determination and the dehumidification determination.
Note that this step S17 is an example of a determination step.

The air conditioner 2 controls the determined operation mode (step S18). That is, the control board 22 sends a command to the control board of the heat source device 3 and controls the blower 20 and the heat exchanger 21 according to the operation mode determined in step S17 above.
For example, when the operation mode is determined to be cooling, the control board 22 commands the control board of the heat source device 3 to perform cooling operation, and appropriately controls the rotation speed of the blower 20 and the temperature of the heat exchanger 21. ..
Further, when the operation mode is determined to be blown, the control board 22 instructs the control board of the heat source device 3 to stop, and appropriately controls the rotation speed of the blower 20.
Further, when the operation mode is determined to be dehumidification, the control board 22 sends the following command to the control board of the heat source device 3 and appropriately controls the rotation speed of the blower 20.
For example, the control board 22 causes the refrigerant circuit of the system X to perform a cooling operation, and supplies a refrigerant having a temperature lower than the dew point temperature of the indoor air RA to the air conditioner 2. The refrigerant circuit of system Y may be operated in the same manner as system X, depending on the relationship between the temperature and humidity in the room, and the operation is performed so that the room temperature does not become too cold during dehumidification. You may stop it. Alternatively, the refrigerant circuit of the system Y may be heated and reheated and dehumidified.

Then, the air conditioner 2 returns the process to step S11 described above.

By such an air conditioning control process, the operation mode of each room is set based on the relationship between the sensible heat air conditioning load, which is the difference between the temperature and the target temperature, and the latent heat air conditioning load, which is the difference between the humidity and the target humidity. Judgment is made, and the operation mode to be controlled is determined based on the judgment result.
As a result, even if the sensible heat and latent heat air conditioning loads differ depending on the room, air conditioning can be comfortably performed as a whole.

(Other embodiments)
In the above embodiment, the case where the operation mode determination unit 202 of the control board 22 determines the operation mode of the air conditioner 2 has been described by taking the case where the season is summer as an example, but the operation mode determination unit is also described in the case of winter. 202 can appropriately determine the operation mode of the air conditioner 2 as described below.

In the case of winter, the operation mode determination unit 202 determines which of the four quadrants shown in FIG. 14 corresponds to the difference between the temperature and the target temperature and the difference between the humidity and the target humidity. Determine the operating mode of the room. In FIG. 14, the horizontal axis is "target temperature-temperature", that is, the heating sensible heat load, and the vertical axis is "target humidity-humidity", that is, the heating latent heat load. It stipulates that it is humidified, the second quadrant is heating, the third quadrant is heating, and the fourth quadrant is humidified.
That is, when the difference between the indoor temperature and the target temperature is positive and the difference between the indoor humidity and the target humidity is positive, the operation mode determining unit 202 determines that the operation mode of the room is heating / humidifying. do. Even if the difference is 0, it is positive for convenience. Further, when the difference between the indoor temperature and the target temperature is negative and the difference between the indoor humidity and the target humidity is positive, the operation mode determining unit 202 determines that the operation mode of the room is humidified. .. Further, when the difference between the humidity in the room and the target humidity is negative, the operation mode determining unit 202 determines that the operation mode of the room is heating.

The operation mode determination unit 202 determines the operation mode of the air conditioner 2 from the operation modes of each room determined in this way.
That is, if the determined operation modes of the rooms match, the operation mode determination unit 202 determines the matched operation modes as the operation mode of the air conditioner 2.
On the other hand, when the determined operation modes of the rooms do not match, the operation mode determination unit 202 determines the operation mode of the air conditioner 2 according to the same method as in FIGS. 7 to 11 described above.
That is, similarly to FIG. 7, the operation mode determination unit 202 determines the operation mode of the air conditioner 2 according to the priority order of the determined operation modes. Further, similarly to FIG. 8, the operation mode determination unit 202 determines the operation mode of the air conditioner 2 according to the number of determinations. Further, similarly to FIG. 9, the operation mode determination unit 202 determines the operation mode of the air conditioner 2 according to the priority order of the room designated by the user. Further, similarly to FIG. 10, the operation mode determination unit 202 determines the operation mode of the air conditioner 2 according to the time zone designated by the user and the priority of the room. Further, similarly to FIG. 11, the operation mode determination unit 202 determines the operation mode of the air conditioner 2 according to the time zone designated by the user and the priority order of the room type.
Further, the operation mode determination unit 202 may determine the humidification amount according to the ratio of the heating determination and the humidification determination when determining the heating / humidification to the operation mode of the air conditioner 2.
For example, as shown in Examples (14) to (17) of FIG. 15, the operation mode determining unit 202 determines the humidification amount according to the ratio of the heating determination and the humidification determination. For example, in the example (14) of FIG. 15, since the heating determination is 3 rooms and the humidification determination is 0 room, the ratio between the heating determination and the humidification determination is 100: 0 as a percentage ratio, and the humidification amount is H1. It is determined. Further, in the example (15) of FIG. 15, since the heating determination is 2 rooms and the humidification determination is 1 room, the ratio between the heating determination and the humidification determination is 67:33, and the humidification amount is H2 of H1 or more. It is determined. Further, in the example (16) of FIG. 15, since the heating determination is one room and the humidification determination is one room, the ratio between the heating determination and the humidification determination is 50:50, and the humidification amount is determined to be H3 of H2 or more. Will be done. In the example (17) of FIG. 15, since the heating determination is for one room and the humidification determination is for two rooms, the ratio between the heating determination and the humidification determination is 33:67, and the humidification amount is determined to be H4 of H3 or more. Will be done.

As described above, in winter, the humidification determination can be made based on the difference between the room temperature and the target temperature and the difference between the humidity and the target humidity. The humidification amount is controlled to increase as the number of determinations increases, that is, as the number of rooms to be humidified increases. The amount of humidification is not limited to the number of rooms to be humidified, and the amount of humidification may be determined by a combination of the floor area to be humidified, the indoor humidity, the outside air humidity, the room temperature, and the outside air temperature. In this case, a plurality of rooms can be humidified, and comfort can be improved.

As described above, according to the air conditioning system 1 according to the embodiment of the present disclosure, when a plurality of rooms in a building are air-conditioned by one air-conditioning device 2, the sensible heat and latent heat air-conditioning loads differ depending on the room. Even so, it is possible to be comfortable as a whole.

It should be noted that the present disclosure is not limited to the above-described embodiment, and various changes can be made without departing from the gist of the present disclosure.

Further, in the above embodiment, the air conditioning control process is executed by the control board 22 included in the air conditioning device 2, but the control device is separate from the air conditioning device 2 and has the same function as that of the control board 22. May cause the air conditioning control process to be executed.

Further, in the above embodiment, each functional unit of the control board 22 is realized by executing the air conditioning control program stored in the secondary storage device 224 by the CPU 220 on the control board 22 of the air conditioning device 2. ..

However, all or part of the functional parts of the control board 22 may be realized by dedicated hardware. The dedicated hardware is, for example, a single circuit, a composite circuit, a programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a combination thereof.

The above air conditioning control program includes CD-ROM (Compact Disc Read Only Memory), DVD (Digital Versatile Disc), magneto-optical disc (Magneto-Optical Disc), USB (Universal Serial Bus) memory, memory card, HDD, etc. It is also possible to store and distribute it on a computer-readable recording medium.

Then, in the case of adopting a configuration in which the air conditioning control process is executed by a control device separate from the air conditioning device 2, the computer is installed by installing the air conditioning control program distributed as described above on a specific or general-purpose computer. Can also function as a control device. Further, the air conditioning control program may be stored in a disk device owned by another server on the Internet so that the air conditioning control program can be downloaded from the server to the control device.

The present disclosure allows for various embodiments and variations without departing from the broad spirit and scope. Further, the above-described embodiment is for explaining the present disclosure, and does not limit the scope of the present disclosure. That is, the scope of the present disclosure is indicated by the scope of claims, not the embodiments. And various modifications made within the scope of the claims and the equivalent meaning of the invention are considered to be within the scope of the present disclosure.

1 air conditioner system, 2 air conditioner, 20 blower, 21 heat exchanger, 22 control board, 23 suction port, 24 supply port, 3 heat source device, 31 heat exchanger, 32 compressor, 33 four-way valve, 34 expansion valve, 4 Temperature / humidity sensor, 5 remote control, 6 damper, 7 ventilator, 71 total heat exchanger, 8 humidity control device, 81 humidity control material, 200 temperature / humidity acquisition unit, 201 remote control operation acquisition unit, 202 operation mode determination unit, 203 control Command unit, 220 CPU, 221 communication interface, 222 ROM, 223 RAM, 224 secondary storage device, 225 bus

Claims (14)

Air conditioning equipped with a temperature sensor that measures the temperature of each room in a plurality of rooms in the building, an air conditioner that air-conditions each room, and a humidity sensor that measures the humidity in the vicinity of the suction port of the air conditioner. It ’s a system,
The air conditioner is
A determination means for determining an operation mode based on the difference between the temperature measured by the temperature sensor and the target temperature and the difference between the humidity measured by the humidity sensor and the target humidity is provided.
Air conditioning system. An air-conditioning system including a sensor for measuring the temperature and humidity of each room in a plurality of rooms in a building and an air-conditioning device for air-conditioning each room.
The air conditioner is
A determination means for determining an operation mode based on the difference between the temperature measured by the sensor and the target temperature and the difference between the humidity measured by the sensor and the target humidity is provided.
Air conditioning system. The determination means is based on the determination conditions in which the operation mode is defined corresponding to the four quadrants in the plane coordinates where the difference between the temperature and the target temperature is on the horizontal axis and the difference between the humidity and the target humidity is on the vertical axis. The operation mode is determined by applying the difference between the temperature measured by the sensor and the target temperature and the difference between the humidity measured by the sensor and the target humidity.
The air conditioning system according to claim 1 or 2. The determination means determines the operation mode of each room, and determines the operation mode to be controlled according to the priority of the operation mode.
The air conditioning system according to any one of claims 1 to 3. The determination means determines the operation mode of each room, and determines the operation mode to be controlled according to the number of determinations.
The air conditioning system according to any one of claims 1 to 3. The determination means determines the operation mode of each room, and determines the operation mode to be controlled according to the priority of the room designated by the user.
The air conditioning system according to any one of claims 1 to 3. The determination means determines the operation mode of each room, and determines the operation mode to be controlled according to the priority of the time zone and the room specified by the user.
The air conditioning system according to any one of claims 1 to 3. The determination means determines the operation mode of each room, and determines the operation mode to be controlled according to the priority of the time zone and the room type designated by the user.
The air conditioning system according to any one of claims 1 to 3. The determination means further determines the blowing temperature according to the ratio of the cooling determination and the dehumidification determination.
The air conditioning system according to any one of claims 1 to 8. The determination means further determines the amount of humidification according to the ratio of the heating determination and the humidification determination.
The air conditioning system according to any one of claims 1 to 8. An air conditioner that air-conditions multiple rooms in a building.
An acquisition means for acquiring data from a temperature sensor that measures the temperature of each room and a humidity sensor that measures the humidity in the vicinity of the suction port of the air conditioner.
A determination means for determining the operation mode based on the difference between the temperature acquired from the temperature sensor by the acquisition means and the target temperature, and the difference between the humidity acquired by the acquisition means from the humidity sensor and the target humidity.
Air conditioner equipped with. An air conditioner that air-conditions multiple rooms in a building.
Acquisition means to acquire data from sensors that measure the temperature and humidity of each room,
A determination means for determining the operation mode based on the difference between the temperature acquired by the acquisition means and the target temperature and the difference between the humidity acquired by the acquisition means and the target humidity.
Air conditioner equipped with. It is an air conditioning control method executed by an air conditioner that air-conditions multiple rooms in a building.
An acquisition step of acquiring data from a temperature sensor that measures the temperature of each room and a humidity sensor that measures the humidity in the vicinity of the suction port of the air conditioner.
The acquisition step determines the operation mode based on the difference between the temperature acquired from the temperature sensor and the target temperature, and the acquisition step determines the operation mode based on the difference between the humidity acquired from the humidity sensor and the target humidity.
Air conditioning control method. It is an air conditioning control method executed by an air conditioner that air-conditions multiple rooms in a building.
The acquisition step to acquire data from the sensors that measure the temperature and humidity of each room,
A determination step for determining the operation mode based on the difference between the temperature acquired by the acquisition step and the target temperature and the difference between the humidity acquired by the acquisition step and the target humidity.
Air conditioning control method.

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