JP7219266B2 - air conditioning system - Google Patents

Description

The present disclosure relates to air conditioning systems including air conditioners and the like.

Some air conditioners can be controlled to start the air conditioning operation in advance so that the indoor temperature reaches the set temperature at a desired time. However, the time from the start of air-conditioning operation to reaching the set temperature often varies depending on the air-conditioning performance of the room in which the air conditioner is installed. This is because the air-conditioning performance of each room depends on factors such as heat insulation, size, airtightness, and sunlight.

Therefore, the air conditioner disclosed in Patent Document 1 is provided with selection means 13 that changes the operating conditions according to the air conditioning load (airtightness performance, heat insulation performance) of the house. In this way, an attempt is made to switch the operation state according to the airtightness performance and insulation performance of the house, and to perform the air conditioning operation comfortably and efficiently in houses with different air conditioning loads.

Japanese Patent Application Laid-Open No. 2001-343145

However, there is still room for improvement in how to control the air-conditioning operation according to the air-conditioning performance of the room. For example, in a room with relatively low heat insulation performance, there is a demand for an air conditioning operation that makes people in the room feel more comfortable.

Accordingly, it is an object of one aspect of the present invention to provide an air conditioning system capable of performing more comfortable air conditioning control based on the air conditioning performance of the space in which the air conditioner is installed.

An air conditioning system according to one aspect of the present invention includes a heat pump cycle and a control section that controls the operation of the heat pump cycle. In this air conditioning system, the control section changes the contents of defrosting operation control based on the air conditioning performance of the space where air conditioning control is performed by the heat pump cycle.

An air conditioning system according to another aspect of the present invention includes a heat pump cycle including a compressor, and a control section that controls operation of the heat pump cycle. In this air conditioning system, the control unit performs air conditioning control such that the temperature in the space reaches a set temperature by a set time based on the air conditioning performance of the space controlled by the heat pump cycle. When the air-conditioning performance of the space is higher than a predetermined air-conditioning performance standard, the control unit starts the operation of the compressor at a rotation speed within a range in which the energy consumption efficiency of the heat pump cycle is optimized.

According to the air conditioning system according to each aspect of the present invention described above, more comfortable air conditioning control can be performed based on the air conditioning performance in the space where the air conditioner is installed. For example, according to the air conditioning system according to one aspect, the defrosting operation can be controlled according to the level of the insulation performance in the space where the air conditioner is installed.

BRIEF DESCRIPTION OF THE DRAWINGS It is an image figure which shows the whole structure and operation|movement outline|summary of the air conditioning system concerning 1st Embodiment. 2 is a block diagram showing the internal configuration of an air conditioner that constitutes the air conditioning system according to the first embodiment; FIG. FIG. 3 is a schematic diagram showing the configuration of a heat pump cycle in the air conditioner shown in FIG. 2; It is a block diagram showing an internal configuration of a server that configures the air conditioning system according to the first embodiment. 5 is a schematic diagram showing an example of an air conditioning performance identification table stored in the server shown in FIG. 4; FIG. 5 is a schematic diagram showing an example of a control content identification table for defrosting operation stored in the server shown in FIG. 4; FIG. 4 is a flow chart showing the flow of processing when changing the control content of defrosting operation in the air conditioning system according to the first embodiment. FIG. 4 is an image diagram showing an example of changes in room temperature TR when defrosting operation is performed in rooms (R1, R2, R3) with different air conditioning performances. FIG. 10 is an image diagram showing an operation outline when evaluating air conditioning performance in the air conditioning system according to the second embodiment; 9 is a flow chart showing the flow of processing for starting air conditioning performance measurement performed in the air conditioning system according to the second embodiment; FIG. 4 is an image diagram showing an example of changes in room temperature TR when air conditioning performance is measured in rooms (R1, R2, R3) with different air conditioning performances. 5 is a schematic diagram showing an example of a control content identification table for defrosting operation stored in the server shown in FIG. 4; FIG. FIG. 11 is a graph showing the relationship between compressor rotational speed control at the start of heating operation performed in the air conditioning system according to the fourth embodiment and changes in room temperature over time. FIG. FIG. 11 is a block diagram showing the internal configuration of an air conditioner according to a fourth embodiment; FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are given the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

[First Embodiment]
<Overall Configuration and Operation Overview of Air Conditioning System 1>
First, the overall configuration of the air conditioning system 1 according to this embodiment will be described. FIG. 1 schematically shows the configuration of an air conditioning system 1 according to this embodiment. The air conditioning system 1 includes an air conditioner 10 and a server 70 as main components. The air conditioner 10 can be connected to the server 70 via the Internet, a router, or the like.

Next, an overview of the operation of the air conditioning system 1 according to this embodiment will be described with reference to FIG. The air conditioning system 1 according to this embodiment stores information about the air conditioning performance of the room R (space) in which the air conditioner 10 is installed.

Here, the information about the air-conditioning performance is information that serves as an index as to whether or not the space (specifically, the room) in which the air conditioner 10 is installed is in an environment that is easily air-conditioned. The air-conditioning performance of the room R depends on factors such as the insulation, size, airtightness, and sunlight of the room R. For example, if the insulation of the room R is higher, the temperature of the room R can reach the set temperature in a short time, or the power consumption (required heat amount) of the air conditioner 10 during air conditioning operation can be reduced. can. Therefore, it is determined that the air conditioning performance of the room R is high. On the other hand, if the thermal insulation of the room R is lower, it is determined that the air conditioning performance of the room R is low. Information about air-conditioning performance can also be rephrased as information about heat insulation performance.

Information about the air-conditioning performance of the room R (space) in which the air conditioner 10 is installed may be determined in advance based on various conditions such as the building and location where the room R is located. Alternatively, for example, the result of evaluation using a method for measuring the air conditioning performance of the room R, which will be described later, may be used as the information on the air conditioning performance.

Then, in the air conditioning system 1 according to the present embodiment, based on the information about the air conditioning performance of the room R, the contents of the defrosting control performed during the heating operation of the air conditioner 10 are changed. Here, the control content of the defrosting operation means the manner of the defrosting operation (specifically, the duration of the defrosting operation, the number of implementations, etc.). A specific configuration of the air conditioning system 1 will be described in detail below.

<Configuration of air conditioner 10>
The configuration of the air conditioner 10 that constitutes the air conditioning system 1 will be described below with reference to FIGS. 2 and 3. FIG. 2 and 3 show the overall configuration of the air conditioner 10 according to this embodiment. In FIG. 3 , the flow of the refrigerant (heat medium) during the heating operation of the air conditioner 10 is indicated by solid arrows, and the flow of the refrigerant (heat medium) during the cooling operation of the air conditioner 10 is indicated by dashed arrows. there is Although the air conditioner 10 can perform both heating operation and cooling operation, the present invention can also be applied to an air conditioner (that is, a heater) that performs only heating operation.

The air conditioner 10 is a separate type air conditioner and mainly includes an indoor unit 20 , an outdoor unit 50 and a remote controller 60 . The air conditioner 10 heats, cools, and dehumidifies the room R to be air-conditioned using a heat pump cycle (also called a refrigerating cycle or a refrigerant cycle).

The outdoor unit 50 includes a compressor 52, an outdoor heat exchanger 54, a four-way valve 53, an expansion valve 55, and the like. A heat pump cycle is formed by these and the indoor-side heat exchanger 12 provided on the indoor unit 20 side.

In the heat pump cycle, the indoor heat exchanger 12 in the indoor unit 20, the compressor 52 in the outdoor unit 50, the outdoor heat exchanger 54, the four-way valve 53, the expansion valve 55, etc. It is configured by being connected by The outdoor unit 50, the indoor unit 20, and the refrigerant pipes 57 and 58 will be described in detail below.

(1) Outdoor unit The outdoor unit 50 mainly includes a housing 51, a compressor 52, a four-way valve 53, an outdoor heat exchanger 54, an expansion valve 55, an outdoor fan 56, a refrigerant pipe 57, a refrigerant pipe 58, a two-way It consists of a valve 59 and a three-way valve 65 . The outdoor unit 50 is installed outdoors.

The housing 51 includes a compressor 52, a four-way valve 53, an outdoor heat exchanger 54, an expansion valve 55, an outdoor fan 56, a refrigerant pipe 57, a refrigerant pipe 58, a two-way valve 59, a three-way valve 65, an outside air temperature sensor ( not shown), the outdoor heat exchanger temperature sensor 63, and the like.

The compressor 52 has a discharge pipe 52a and a suction pipe 52b. The discharge pipe 52a and the suction pipe 52b are connected to different connection ports of the four-way valve 53, respectively. During operation, the compressor 52 sucks low-pressure refrigerant gas from the suction pipe 52b, compresses the refrigerant gas to generate high-pressure refrigerant gas, and then discharges the high-pressure refrigerant gas from the discharge pipe 52a. In the present embodiment, the type of control of the compressor 52 is not particularly limited, and may be a constant-speed compressor or an inverter-type compressor.

The four-way valve 53 is connected to a discharge pipe 52a and a suction pipe 52b of the compressor 52, the outdoor heat exchanger 54 and the indoor heat exchanger 12 via refrigerant pipes. The four-way valve 53 switches the path of the heat pump cycle according to a control signal transmitted from the controller 41 (see FIG. 2) of the air conditioner 10 during operation. That is, the four-way valve 53 switches paths between the cooling operation state and the heating operation state.

Specifically, in the heating operation state, the four-way valve 53 connects the discharge pipe 52 a of the compressor 52 to the indoor heat exchanger 12 and connects the suction pipe 52 b of the compressor 52 to the outdoor heat exchanger 54 . (See the solid line arrow in FIG. 3). On the other hand, in the cooling operation state, the four-way valve 53 connects the discharge pipe 52a of the compressor 52 to the outdoor heat exchanger 54 and connects the suction pipe 52b of the compressor 52 to the indoor heat exchanger 12 (FIG. 3). (see dashed arrow in ).

The outdoor heat exchanger 54 is composed of heat transfer tubes (not shown) that are folded back multiple times at both left and right ends, and a large number of radiation fins (not shown) attached thereto. The outdoor heat exchanger 54 functions as a condenser during cooling operation, and functions as an evaporator during heating operation. A parallel flow heat exchanger or a serpentine heat exchanger may be used as the heat exchanger.

The expansion valve 55 is an electronic expansion valve whose degree of opening can be controlled via a stepping motor. It is connected. The stepping motor of the expansion valve 55 operates according to a control signal transmitted from the controller 41 (see FIG. 2) of the air conditioner 10. During operation, the expansion valve 55 puts the high-temperature, high-pressure liquid refrigerant flowing out of the condenser (the indoor heat exchanger 12 during heating and the outdoor heat exchanger 54 during cooling) into a state where it is easy to evaporate. It plays the role of reducing the pressure and adjusting the amount of refrigerant supplied to the evaporator (the outdoor heat exchanger 54 during heating and the indoor heat exchanger 12 during cooling).

The outdoor fan 56 is mainly composed of a propeller fan and a motor. The propeller fan is rotationally driven by a motor and supplies outside air to the outdoor heat exchanger 54 . The motor operates according to a control signal transmitted from a controller (not shown) of air conditioner 10 .

The two-way valve 59 is arranged in the refrigerant pipe 57 . The two-way valve 59 is closed when the refrigerant pipe 57 is removed from the outdoor unit 50 to prevent the refrigerant from leaking from the outdoor unit 50 to the outside.

The three-way valve 65 is arranged in the refrigerant pipe 58 . The three-way valve 65 is closed when the refrigerant pipe 58 is removed from the outdoor unit 50 to prevent the refrigerant from leaking from the outdoor unit 50 to the outside. Also, when the refrigerant needs to be recovered from the outdoor unit 50 or from the entire heat pump cycle including the indoor unit 20 , the refrigerant is recovered through the three-way valve 65 .

The outdoor heat exchanger temperature sensor 63 is arranged near the outdoor heat exchanger 54 and measures the temperature of the outdoor heat exchanger 54 . The outdoor heat exchanger temperature sensor 63 may be arranged in contact with the outdoor heat exchanger 54 .

(2) Indoor unit The indoor unit 20 mainly includes the housing 11 , the indoor heat exchanger 12 and the indoor fan 13 .

The housing 11 houses an indoor heat exchanger 12, an indoor fan 13, an indoor heat exchanger temperature sensor 14, an indoor temperature sensor 15, a louver 19, a controller 41 (see FIG. 2), and the like.

As shown in FIG. 3, the indoor-side heat exchanger 12 is formed by combining three heat exchangers like a roof that covers the indoor fan 13 . Each heat exchanger has a heat transfer tube (not shown) that is folded back multiple times at both left and right ends, and a large number of radiation fins (not shown) are attached to the heat transfer tube (not shown). These heat exchangers function as condensers during heating operation and as evaporators during cooling operation. An indoor heat exchanger temperature sensor 14 for measuring the temperature of the heat exchanger is arranged near the indoor heat exchanger 12 . The indoor heat exchanger temperature sensor 14 may be arranged in contact with the indoor heat exchanger 12 .

Indoor fan 13 is mainly composed of a cross-flow fan and a motor. The cross-flow fan is rotationally driven by a motor, sucks indoor air into the housing 11 and supplies it to the indoor heat exchanger 12, and also sends out the air heat-exchanged in the indoor heat exchanger 12 indoors.

The indoor temperature sensor 15 measures the temperature in the room where the indoor unit 20 is installed. The indoor temperature sensor 15 is arranged, for example, in the vicinity of the intake port provided in the housing 11 for sucking in the indoor air.

The louver 19 is formed of a plate-like member whose angle can be changed. By appropriately changing the angle of the plate member, the wind direction of the air blown out by the indoor fan 13 is changed in the vertical direction. In this embodiment, the louver 19 also serves as a shutter that controls on/off (opening/closing) of blowing air into the room.

In addition, the indoor unit 20 includes an indoor temperature sensor 15, a display unit 23, a communication interface 24, a control unit 41, etc. (see FIG. 2).

The indoor temperature sensor 15 is an indoor temperature detection means, and measures the temperature in the room R in which the indoor unit 20 is installed. A known detection means such as a thermistor can be used as the indoor temperature sensor 15 .

The display unit 23 includes a liquid crystal display panel, an LED light, and the like. The display unit 23 displays the operation status of the air conditioner 10, alarms, and the like based on signals from the control unit 41. FIG.

Communication interface 24 is realized by an antenna and a connector. The communication interface 24 exchanges data with other devices by wired communication or wireless communication. Specifically, the communication interface 24 receives infrared signals transmitted when the remote controller 60 is operated.

The communication interface 24 also receives various signals, various data, various commands, and the like transmitted from the server 70 . The communication interface 24 can also transmit information on the air conditioner 10 side to the server 70 .

The control unit 41 is connected to each component in the air conditioner 10 and controls them. The control unit 41 is arranged, for example, in an electrical component unit arranged at the side end inside the indoor unit 20 . The control unit 41 includes a memory 42, a timer 43, and the like.

The control unit 41 is connected to each component of the heat pump cycle via signal lines. The control unit in the electrical unit controls the heat pump cycle to perform cooling operation and heating operation based on user instructions and detection signals from various sensors such as thermometers that detect indoor and outdoor temperatures. .

The memory 42 includes ROM (read only memory) and RAM (Random Access Memory). The memory 42 stores the operation program and setting data of the air conditioner 10 and temporarily stores the calculation result by the control unit 41 . The timer 43 measures the time of processing performed in the control unit 41, the operation time of each component in the air conditioner 10, and the like, as necessary.

The remote controller 60 functions as an operating unit for the user to operate the air conditioner 10 . For example, the user can operate the remote controller 60 to select the operation mode, set temperature, etc. of the air conditioner 10 .

(3) Refrigerant Pipe Refrigerant pipe 57 is a pipe thinner than refrigerant pipe 58, and liquid refrigerant flows during operation. The refrigerant pipe 58 is a pipe thicker than the refrigerant pipe 57, and gas refrigerant flows during operation.

Compressor 52, four-way valve 53, outdoor heat exchanger 54 and expansion valve 55 of outdoor unit 50, and indoor heat exchanger 12 of indoor unit 20 are sequentially connected by refrigerant pipes 57, 58 to form a heat pump cycle (refrigerating system). cycle).

<Basic operation of the air conditioner>
The heating operation and cooling operation of the air conditioner 10 according to the present embodiment will be described in detail below.

(1) Heating operation In the heating operation, the four-way valve 53 is in the state indicated by the solid line in FIG. 52 b is connected to the outdoor heat exchanger 54 . At this time, the two-way valve 59 and the three-way valve 65 are opened. In this state, when the compressor 52 is started, the gas refrigerant is sucked into the compressor 52, compressed, and then supplied to the indoor heat exchanger 12 via the four-way valve 53 and the three-way valve 65, The indoor air is heated and condensed into a liquid refrigerant. After that, this liquid refrigerant is sent to the expansion valve 55 via the two-way valve 59 and depressurized to become a gas-liquid two-phase state. The gas-liquid two-phase refrigerant is sent to the outdoor heat exchanger 54 and evaporated in the outdoor heat exchanger 54 to become a gas refrigerant. Finally, the gas refrigerant is sucked into the compressor 52 again via the four-way valve 53 .

(2) Cooling operation In the cooling operation, the four-way valve 53 is in the state indicated by the dashed line in FIG. 52 b is connected to the indoor heat exchanger 12 . At this time, the two-way valve 59 and the three-way valve 65 are opened. In this state, when the compressor 52 is started, the gas refrigerant is sucked into the compressor 52, compressed, and then sent to the outdoor heat exchanger 54 via the four-way valve 53, where the outdoor heat is exchanged. It is cooled in the vessel 54 and becomes a liquid refrigerant. After that, this liquid refrigerant is sent to the expansion valve 55 and depressurized to become a gas-liquid two-phase state. The gas-liquid two-phase refrigerant is supplied to the indoor heat exchanger 12 via the two-way valve 59, cools the indoor air, and is evaporated to become a gas refrigerant. Finally, the gas refrigerant is sucked into the compressor 52 again via the three-way valve 65 and the four-way valve 53 .

(3) Defrosting operation During heating operation, the outdoor heat exchanger 54 may be frosted and the heat exchange capacity may be reduced. Therefore, the controller 41 (see FIG. 2) determines whether the outdoor heat exchanger 54 is frosted based on the temperature measured by the outdoor heat exchanger temperature sensor 63 or the like. When the controller 41 determines that frost has formed, the controller 41 switches the four-way valve 53 to set the refrigeration cycle to the same cycle as the above-described cooling operation, and defrosts by circulating the refrigerant with the indoor fan stopped ( reverse defrost). Further, based on the temperature measured by the outdoor heat exchanger temperature sensor 63, the control unit 41 determines whether or not the outdoor heat exchanger 54 is properly defrosted. Note that the air conditioner 10 according to the present embodiment changes the control details of the defrosting operation based on the information regarding the air conditioning performance of the room R acquired from the server 70 . Specifically, the duration and number of defrosting operations are changed. The defrosting operation method is not limited to the reverse defrosting described above.

<Configuration of Server 70>
Next, the configuration of the server 70 that configures the air conditioning system 1 will be described with reference to FIG. 4 . The server 70 includes a CPU (Central Processing Unit) 71, a memory 72, a display 73, an operation section 74, and a communication interface 75 as main components.

A CPU (control unit) 71 controls each unit of the server 70 by executing a program stored in a memory 72 . For example, the CPU 71 executes a program stored in the memory 72 and refers to various data to execute various processes to be described later.

An air conditioning performance evaluation unit 76 is provided inside the CPU 71 . The air conditioning performance evaluation unit 76 measures a change in the environment in the room R (for example, a change in temperature in the room R) when the operating state of the air conditioner 10 satisfies a predetermined condition, and based on the result The air conditioning performance of room R is evaluated. Note that the CPU 71 of the server 70 receives the operating state of the air conditioner 10, the room temperature sensor from the communication interface 24 of the air conditioner 10 so that the air conditioning performance evaluation unit 76 can evaluate the air conditioning performance of the room R. Information about 15 measurement data etc. is sent periodically.

The memory 72 is realized by various RAMs (Random Access Memories), various ROMs (Read-Only Memories), and the like. The memory 72 stores programs executed by the CPU 71, data generated by execution of the programs by the CPU 71, input data, various databases used for operation control of the air conditioner 10 according to the present embodiment, and the like. Remember. For example, the memory 72 stores the air-conditioning performance information (the air-conditioning performance identification table 81 shown in FIG. 5, etc.) of the room R created by the air-conditioning performance evaluation unit 76, and the like. In this embodiment, these pieces of information are stored in memory 72 in server 70, but these pieces of information may be stored in another device that server 70 can access.

Also, the display 73 displays text and images based on signals from the CPU 71 . The operation unit 74 receives a command from a service administrator or the like and inputs the command to the CPU 71 .

Communication interface 75 transmits data from CPU 71 to other devices such as air conditioner 10 via the Internet, a carrier network, a router, or the like. Conversely, the communication interface 75 receives data from other devices such as the air conditioner 10 via the Internet, carrier networks, routers, etc., and transfers the data to the CPU 71 .

<Method of controlling defrosting operation based on room air conditioning performance>
Next, a method of changing the control contents of the defrosting operation of the air conditioner 10 based on the air conditioning performance of the room R will be described with reference to FIGS. 1 and 5 to 7. FIG.

FIG. 5 shows the air conditioning performance identification table 81 stored in the memory 72 in the server 70. As shown in FIG. The air-conditioning performance identification table 81 stores the identification ID of each room and the air-conditioning performance of the room in association with each other. Such a table is effective when there are a plurality of air conditioners capable of information communication with the server 70 . A room identification ID is assigned to each room in which each air conditioner is installed.

For example, in FIG. 5, the room R2 whose air-conditioning performance is "medium" is a space having a standard (average) thermal insulation performance according to the current evaluation criteria for thermal insulation performance of houses. In addition, the room R1 corresponding to the "high" air conditioning performance is a space that is superior in heat insulation performance by about 20% or more compared to the room R2 corresponding to the "medium" air conditioning performance. In addition, the room R3 corresponding to the "low" air conditioning performance is a space whose thermal insulation performance is inferior to that of the room R2 corresponding to the "medium" air conditioning performance by about 20% or more.

FIG. 6 shows a control content identification table 82 for defrosting operation stored in the memory 72 in the server 70 . In the control content identification table 82, the control content of the defrosting operation (specifically, the upper limit of the duration of the defrosting operation and ON/OFF of the setting of the re-defrosting operation) corresponds to the air conditioning performance of the room. It is stored with

In the control content identification table 82 shown in FIG. 6, T2 is set as the upper limit value of the duration of the defrosting operation when the defrosting operation is performed in a room with "low" air conditioning performance. This upper limit value T2 is shorter than the upper limit value T1 in rooms corresponding to "medium" and "high" air conditioning performance. This is because in a room with poor air-conditioning performance, the degree of indoor temperature drop during the defrosting operation is greater than in a room with excellent air-conditioning performance. In this way, when the air conditioning performance of room R is lower than the standard air conditioning performance of room R2, the upper limit of the duration of the defrosting operation is shortened from the preset upper limit (for example, T1). By doing so, it is possible to reduce the degree of decrease in the indoor temperature during the defrosting operation in the room R.

Further, the "setting of re-defrosting operation" in the control content identification table 82 shown in FIG. be. Such setting is preferably performed when defrosting is insufficient in the first defrosting operation. Therefore, in the control content identification table 82 shown in FIG. 6, when the air conditioning performance is "low" with a relatively short upper limit value for the duration of the defrosting operation, "re-defrosting operation setting" is ON. . On the other hand, when the air conditioning performance is "medium" or "high" with a relatively long upper limit of the duration of the defrosting operation, the "re-defrosting operation setting" is OFF.

Thus, in the present embodiment, when the defrosting operation is performed in a room with "low" air conditioning performance, the duration of the defrosting operation is set shorter than in a room with standard air conditioning performance, and , the number of defrosting operations is increased compared to a room with standard air conditioning performance.

FIG. 7 shows the flow of processing when changing the control details of the defrosting operation of the air conditioner 10 based on the air conditioning performance of the room R. As shown in FIG. This process is executed, for example, when the air conditioner 10 starts the room R heating operation. The flow of processing for changing the control details of the defrosting operation in the air conditioner 10 will be described below with reference to FIG. 7 .

First, when the user operates the remote controller 60 or the like to transmit an operation start command to the air conditioner 10, the control unit 41 determines whether or not the command is a command to perform the heating operation. It judges (step S11). If the command is for a command other than the heating operation (for example, the cooling operation) (NO in step S11), the process ends.

On the other hand, if the command is for the heating operation (YES in step S11), the control unit 41 notifies the server 70 of the command to start the heating operation. The CPU 71 of the server 70 refers to the air-conditioning performance identification table 81 in the memory 72 and acquires information on the air-conditioning performance associated with the identification ID of the room in which the air conditioner 10 is installed (step S12). . For example, when the identification ID of the room in which the air conditioner 10 is installed is "R3", the air conditioning performance "low" is obtained.

Next, the CPU 71 of the server 70 refers to the control content identification table 82 in the memory 72 to obtain information about the control content of the defrosting operation corresponding to the obtained air conditioning performance of the room R. (Step S13).

After that, the server 70 transmits the acquired information about the control details of the defrosting operation to the air conditioner 10 via the communication interface 75 (step S14). The information transmitted to air conditioner 10 is transmitted to control unit 41 via communication interface 24 . The control unit 41 changes the information about the control details of the defrosting operation stored in the memory 42 according to the information transmitted from the server 70 (step S15).

Then, the air conditioner 10 starts heating operation (step S16). Then, for example, when the temperature measured by the outdoor heat exchanger temperature sensor 63 drops below a predetermined temperature and the conditions for starting the defrosting operation are satisfied, the control unit 41 determines whether the defrosting operation changed in step S15 is performed. A defrosting operation is performed according to the contents of the frosting operation control.

<Method for Evaluating Air Conditioning Performance of Room R>
Next, a method for evaluating the air conditioning performance of the room R will be described below. In the air conditioning system 1 according to this embodiment, the air conditioning performance of the room R is evaluated from temperature changes in the room R while the air conditioner 10 is performing the defrosting operation.

Defrosting operation is performed during heating operation. As described above, during defrosting operation, the refrigerant in the heat pump cycle is circulated in the same direction as during cooling operation. Since the heating operation is not performed during the defrosting operation, the temperature in the room R tends to decrease. The tendency of this temperature drop differs according to the level of the insulation performance of the room. FIG. 8 shows an example of changes in room temperature when the defrosting operation is performed in rooms (R1, R2, R3) with different air conditioning performances.

As shown in FIG. 8, the temperature change in the room after the air conditioner 10 starts the defrosting operation depends on the insulation and airtightness of each room. As a result, each room exhibits different air conditioning performance. In the example shown in FIG. 8, the amount of indoor temperature decrease after the start of the defrosting operation decreases in the order of room R1<room R2<room R3. Therefore, the air conditioning performance is evaluated to be high in the order of room R1>room R2>room R3. Therefore, for example, room R1 is determined to have "high" air conditioning performance, room R2 is determined to have "medium" air conditioning performance, and room R3 is determined to have "low" air conditioning performance.

In this embodiment, an example is shown in which room R1 is determined to have "high" air conditioning performance, room R2 is determined to have "medium" air conditioning performance, and room R3 is determined to have "low" air conditioning performance. , R1, R2, and R3, the air conditioning performance may be "high", "medium", or "low". That is, various combinations of the air conditioning performances of the rooms R1, R2, and R3 are conceivable.

Based on such evaluation criteria, for example, the air conditioning performance identification table 81 (see FIG. 5) as described above is created. The degree of indoor temperature change after the air conditioner 10 starts the defrosting operation may be influenced by the outdoor environment such as the outside air temperature and the weather at that time. Therefore, the indoor temperature drop amount after the start of the defrosting operation may be measured each time the defrosting operation is performed. Then, the measurement results for each defrosting operation may be accumulated in the memory 72 in the server 70, and the air conditioning performance identification table 81 may be created from the average value of the accumulated data.

Also, the same air conditioning performance identification table 81 can be used for a plurality of air conditioners connectable to the server 70 . In this case, the air-conditioning performance identification table 81 may be updated sequentially by referring to performance measurement results for each room obtained from a plurality of air conditioners connectable to the server 70 .

(Summary of the first embodiment)
As described above, in the present embodiment, based on the information about the air conditioning performance of the room R in which the air conditioner 10 is installed, the control content of the defrosting operation (specifically, the duration of the defrosting operation, etc.) are changed.

For example, when defrosting operation is performed in a room with "low" air conditioning performance, the duration of defrosting operation is set to be shorter than in a room with standard air conditioning performance, and the number of times defrosting operation is performed , the air conditioning performance is increased over the standard room. As a result, it is possible to suppress a decrease in the room temperature during the defrosting operation in the room corresponding to the "low" air conditioning performance, and defrost the outdoor heat exchanger 54 appropriately. In other words, the change in room temperature can be reduced by reheating the room temperature, which has dropped during the defrosting, by the heating operation and performing the defrosting operation again.

Therefore, according to the air conditioning system 1 of the present embodiment, more comfortable air conditioning control can be performed based on the air conditioning performance in the room R in which the air conditioner 10 is installed.

[Second embodiment]
Next, a second embodiment of the present invention will be described below. In the second embodiment, the method for evaluating the air conditioning performance of the room R is different from that in the first embodiment. Moreover, in the second embodiment, the defrosting operation control method is different from that in the first embodiment. Therefore, the points different from the first embodiment will be mainly described below.

<Method for Evaluating Air Conditioning Performance of Room R>
FIG. 9 shows an outline of the operation when measuring the air conditioning performance of the room R in the air conditioning system 1 according to this embodiment.

The air conditioning system 1 according to the present embodiment uses the human sensor 22 provided in the air conditioner 10 to periodically detect whether or not there is a person in the room R. Then, an air-conditioning performance evaluation unit 76 (see FIG. 4) provided in the server 70 measures the air-conditioning performance of the room R when it is detected that there is no person in the room R, and measures the air-conditioning performance of the room R. create information about

In this embodiment, the performance of the room R is measured by measuring the change in the temperature inside the room R after the air conditioner 10 stops the heating operation while no one is in the room R. The temperature inside the room R is measured by an indoor temperature sensor 15 provided in the air conditioner 10 .

Note that the performance of the room R may also be influenced by the outdoor environment where the air conditioner 10 is installed. Therefore, as an index for judging the outdoor environment when the performance of the room R is measured, the outside temperature data may be acquired. Data on the outside air temperature can be obtained from an outside air temperature sensor (not shown) provided in the outdoor unit 50 of the air conditioner 10 .

The human sensor 22 detects whether or not a person exists in the room R in which the air conditioner 10 is installed, based on a signal from the control unit 41 , and transmits the detection result to the control unit 41 . In this embodiment, the control unit 41 creates data regarding whether or not there is a person in the room R based on the detection result transmitted from the human sensor 22, and sends the data to the server 70 via the communication interface 24. Send to

<Method for measuring and evaluating air conditioning performance of room R>
Next, the flow of processing when measuring the air conditioning performance of the room R will be described. FIG. 10 shows the flow of processing up to the start of air conditioning performance measurement of room R in which air conditioner 10 is installed, based on a command from server 70 .

In this embodiment, the CPU 71 in the server 70 determines whether or not to measure the air conditioning performance of the room R in which the air conditioner 10 is installed, according to the flowchart shown in FIG. The processing shown in FIG. 10 is executed at the timing when the air conditioner 10 in the room R stops the heating operation. When the user operates the remote controller 60 to stop the heating operation of the air conditioner 10 , information indicating that the heating operation has been stopped is sent from the control unit 41 of the air conditioner 10 to the server 70 via the communication interface 24 . sent.

The CPU 71 in the server 70 starts the processing shown in FIG. 10 when the information indicating that the heating operation has been stopped is transmitted from the air conditioner 10 . First, the CPU 71 determines whether or not the air conditioner 10 has been performing the heating operation continuously for a predetermined time or longer (for example, one hour or longer) immediately before the air conditioner 10 stops the heating operation (step S21). Here, if the duration of the last heating operation is less than the predetermined time (NO in step S21), the process ends without measuring the air conditioning performance. This is because if the duration of the immediately preceding heating operation is short, the temperature inside the room R may not have reached the set temperature, and the air conditioning performance may not be accurately determined.

On the other hand, if the duration of the previous heating operation is equal to or longer than the predetermined time (YES in step S21), it is determined whether or not there is a person in the room R (step S22). This determination is made based on data transmitted from the air conditioner 10 (data regarding whether or not there is a person in the room R).

Here, if it is determined that there is a person in the room R (YES in step S22), the process ends without measuring the air conditioning performance. This is because if a person is present in the room R, the air conditioning performance of the room R may not be accurately determined.

On the other hand, when it is determined that there is no person in the room R (NO in step S22), the CPU 71 starts measuring the air conditioning performance (step S23).

When the air-conditioning performance measurement of the room R is started, the control unit 41 starts measuring the temperature change in the room R. That is, the change over time of the indoor temperature sensor 15 is measured. FIG. 11 shows an example of changes in room temperature when air conditioning performance is measured in rooms (R1, R2, R3) with different air conditioning performances.

As shown in FIG. 11, the temperature change in the room after the air conditioner 10 stops the heating operation depends on the insulation and airtightness of each room. As a result, each room exhibits different air conditioning performance. In the example shown in FIG. 11, the amount of temperature decrease in the room after the heating operation is stopped is small in the order of room R1<room R2<room R3. Therefore, the air conditioning performance is evaluated to be high in the order of room R1>room R2>room R3. Therefore, for example, room R1 is determined to have "high" air conditioning performance, room R2 is determined to have "medium" air conditioning performance, and room R3 is determined to have "low" air conditioning performance.

In this embodiment, an example is shown in which room R1 is determined to have "high" air conditioning performance, room R2 is determined to have "medium" air conditioning performance, and room R3 is determined to have "low" air conditioning performance. , R1, R2, and R3, the air conditioning performance may be "high", "medium", or "low". That is, various combinations of the air conditioning performances of the rooms R1, R2, and R3 are conceivable.

Based on such evaluation criteria, the air conditioning performance identification table 81 (see FIG. 5) is created as in the first embodiment.

In addition, instead of measuring the air conditioning performance when the last heating operation lasted for a predetermined time or more, when the heating operation is stopped while the room temperature is at the set temperature, the air conditioning performance is measured, and if the room temperature is not equal to the set temperature and the heating operation is stopped, the air conditioning performance measurement may not be performed.

<Method of controlling defrosting operation based on room air conditioning performance>
Next, a method of changing the control details of the defrosting operation of the air conditioner 10 based on the air conditioning performance of the room R will be described with reference to FIGS. 5 and 12. FIG.

FIG. 5 shows the air conditioning performance identification table 81 stored in the memory 72 in the server 70. As shown in FIG. The air-conditioning performance identification table 81 stores the identification ID of each room and the air-conditioning performance of the room in association with each other. Such a table is effective when there are a plurality of air conditioners capable of information communication with the server 70 . A room identification ID is assigned to each room in which each air conditioner is installed.

FIG. 12 shows a control content identification table 83 for defrosting operation stored in the memory 72 in the server 70 . The control content identification table 83 includes the control content of the defrosting operation (specifically, the room temperature rise value immediately before the defrosting operation, the upper limit of the duration of the defrosting operation, ON/OFF of the re-defrosting operation setting, , and the rise in room temperature immediately before the re-defrosting operation) are stored in association with the air conditioning performance of the room.

The "upper limit value of defrosting operation duration time" and "upper limit value of defrosting operation duration time" in the control content identification table 83 are the same as those in the control content identification table 82 described in the first embodiment. .

The "increase value of room temperature immediately before defrosting operation" in the control content identification table 83 indicates the increase value of the temperature in the room R immediately before the defrosting operation of the air conditioner 10 starts relative to the set temperature. This value is set in advance to keep the temperature inside the room R somewhat higher than the set temperature, in anticipation that the temperature in the room R may drop when the heating operation is temporarily stopped during the defrosting operation. Used for control. The control unit 41 refers to this item in the control content identification table 82, and determines that the temperature of the room R measured by the room temperature sensor 15 is higher than the current set temperature for the heating operation according to the air conditioning performance of the room R. It is determined how many times the defrosting operation start instruction should be given when the air temperature rises.

In the control content identification table 83, the "increase value of the room temperature immediately before the defrosting operation" is set to t1 or more in the room corresponding to the "high" air conditioning performance. In addition, the "increase value of the room temperature immediately before the defrosting operation" is set to t2 or more in the room corresponding to the "middle" air-conditioning performance. In addition, the "increase value of room temperature immediately before defrosting operation" is set to t3 or more in the room corresponding to "low" air-conditioning performance.

Here, t1<t2<t3. Specifically, t1 can be set to +1°C, t2 can be set to +2°C, and t3 can be set to +3°C. This is because in a room with poor air-conditioning performance (“low”), the degree of indoor temperature drop during defrosting operation is greater than in a room with excellent air-conditioning performance (“high”). By setting the room temperature rise value immediately before the defrosting operation in this manner, even in a room with poor air conditioning performance, it is possible to reduce the degree of decrease in room temperature during the defrosting operation.

Further, the "increase value of the room temperature immediately before the re-defrosting operation" in the control content identification table 83 indicates the increase value of the temperature inside the room R immediately before the air conditioner 10 starts the re-defrosting operation with respect to the set temperature. It is. This numerical value is used only when the "re-defrosting operation setting" is ON.

In the control of the defrosting operation described in the first embodiment, when the "re-defrosting operation setting" is ON, after a predetermined time has passed since the defrosting operation is completed, defrosting is performed again. Force driving. On the other hand, in the defrosting operation control in the present embodiment, when the "re-defrosting operation setting" is ON, after the first defrosting operation is completed and the heating operation is restarted , when the temperature in the room R rises above the set temperature by α (for example, +2° C.), the re-defrosting operation is started. As a result, it is possible to prevent the defrosting operation from being performed again in a state in which the heating operation after the defrosting operation is finished is insufficient and the temperature in the room R remains lower than the set temperature. .

In addition, in the air conditioning system 1 according to another embodiment, the air conditioning performance of the room R is evaluated based on the indoor temperature change during the defrosting operation described in the first embodiment, and You may change the control content of a defrosting operation. As for the method of evaluating the air conditioning performance of the room R, a method other than the method described in each of the above-described embodiments can be adopted.

(Summary of the second embodiment)
As described above, in the present embodiment, performance is measured when no one is in the room R in which the air conditioner 10 is installed, and the air conditioning performance of the room R is evaluated. Therefore, it is possible to prevent errors caused by the number of people in the room R from being included in the information about the air conditioning performance that is created. Therefore, the air conditioning system 1 according to the present embodiment can acquire more accurate information regarding air conditioning performance. By controlling the air-conditioning operation based on this information, more comfortable air-conditioning operation can be performed as a result.

Further, in the air conditioning system 1 according to the present embodiment, the control content identification table 83 is used to control the defrosting operation. Therefore, it is possible to more appropriately suppress the temperature drop in the room R during the defrosting operation in a room with poor air conditioning performance.

[Third Embodiment]
Next, a third embodiment of the present invention will be described below. In the air-conditioning system 1 according to this embodiment, in addition to changing the control details of the defrosting operation based on the air-conditioning performance of the room R, the rotation speed of the compressor during the heating operation is also controlled. As for the method for changing the defrosting operation control contents based on the air conditioning performance of the room R, the same method as the method described in the above-described first or second embodiment can be applied, so detailed description will be omitted.

An air conditioning system 1 according to this embodiment includes an air conditioner 10 and a server 70 as main components. The overall configuration of the air conditioner 10 is as shown in FIGS. 2 and 3. FIG. The configuration of the server 70 is as shown in FIG.

In the air conditioning system 1 according to this embodiment, the air conditioner 10 includes a compressor 52 . Further, the control unit 41 in the air conditioner 10 activates the heat pump cycle to start the heating operation so that the temperature in the room R reaches the set temperature by the set time. At this time, the control unit 41 performs air conditioning control based on the air conditioning performance of the room R in which the air conditioner 10 is installed. Specifically, when the air-conditioning performance of the room R is higher than a predetermined air-conditioning performance standard (for example, the air-conditioning performance of a standard space), the control unit 41 causes the compressor 52 to operate at the rated rotation speed. let it start.

Here, the number of revolutions in rated operation is an example of the number of revolutions within a range where the energy consumption efficiency of the heat pump cycle represented by the COP (coefficient of performance) is optimal. In addition, the rotation speed of the rated operation can be rephrased as "the optimum rotation speed in terms of power consumption". In addition, here, "to start the operation of the compressor at the rated operation speed" means to once rotate the compressor at a higher rotation speed in order to circulate the refrigerant in the heat pump cycle, and then start the operation at the rated speed. It also includes driving that lowers the speed of operation. The rated rotation speed is determined by the capacity and specifications of each compressor.

<Compressor control method based on room air conditioning performance>
Next, a method of changing the rotation speed of the compressor 52 of the air conditioner 10 based on the air conditioning performance of the room R will be described with reference to FIG. 13 . FIG. 13 shows the relationship between the operating state of the compressor 52 and the temperature change in the room R when the air conditioner 10 is controlled so that the temperature in the room R reaches the set temperature by the set time. is a graph showing

In FIG. 13 , A indicates room temperature changes when the compressor 52 is operated in normal operation, and B indicates room temperature changes when the compressor 52 is operated in rated operation. Further, in FIG. 13, C indicates the room temperature change when the compressor 52 is operated at the rotation speed of the rated operation at the beginning of the operation and then changed to the rotation speed of the normal operation.

FIG. 13 shows an example in which the temperature in room R reaches the set temperature at set time 0 when the compressor 52 is started in the normal operation state at time t1 before the set time.

In the air conditioning system 1 according to this embodiment, the control unit 41 starts the operation of the compressor 52 at the rated operation speed. In this case, as shown by B and C in FIG. 13, the temperature rise in the room R is slower than when the compressor 52 is operated in normal operation.

In the air conditioning system 1 according to this embodiment, the controller 41 causes the compressor 52 to start operating at time t2 before time t1. As a result, the temperature in the room R can reach the set temperature at set time 0 while the compressor 52 continues to operate at the rated rotation speed. Here, if the time 0 is 7:00, for example, the time t1 can be 6:00 and the time t2 can be 5:00.

Alternatively, after starting the compressor 52 at the rated operation speed at time t1, the controller 41 determines that the temperature in the room R will not reach the set temperature by the set time 0. When this occurs, the rotation speed of the compressor 52 may be increased above the rated rotation speed to change to normal operation rotation speed (see C in FIG. 13). By performing such an operation, the compressor 52 is started in normal operation at time t1, and control is performed so that the temperature in room R reaches the set temperature at a time earlier than set time 0 (Fig. 13 D), the power consumption of the air conditioner 10 can be kept low.

As described above, according to the air conditioning system 1 according to the present embodiment, the energy consumption efficiency of the heat pump cycle is improved by suppressing the rotation speed of the compressor 52 at the start of operation to the rotation speed of the rated operation. can be improved.

Note that in the air conditioning system according to another aspect of the present invention, the content of defrosting operation control based on the air conditioning performance of the room R is not changed, and only the rotation speed of the compressor during heating operation is controlled by the above-described method. You can go with

[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described below. In each of the above-described embodiments, an example of implementing one aspect of the present invention with the air conditioning system 1 including the server 70 and the air conditioner 10 has been described. However, the air conditioning system according to one aspect of the present invention can also be realized with the air conditioner 10 alone. Therefore, in the present embodiment, an air conditioning system realized by the air conditioner 10 alone will be described.

FIG. 14 shows the internal configuration of an air conditioner (air conditioning system) 110 according to this embodiment. The air conditioner 110 is a separate type air conditioner and mainly includes an indoor unit 120 , an outdoor unit 50 and a remote controller 60 .

For the outdoor unit 50 and the remote controller 60, configurations similar to those described in the first embodiment can be applied.

The indoor unit 120 is installed inside the room R. The interior of the indoor unit 120 includes the indoor heat exchanger 12, the indoor fan 13, the indoor heat exchanger temperature sensor 14, the indoor temperature sensor 15, the display unit 23, the communication interface 124, the control unit 141, and the like. there is

For the indoor heat exchanger 12, the indoor fan 13, the indoor heat exchanger temperature sensor 14, the indoor temperature sensor 15, and the display unit 23, the same configurations as those described in the first embodiment can be applied.

The control unit 141 is connected to each component in the air conditioner 110 and controls them. The controller 141 includes a memory 142, a timer 43, and the like. A configuration similar to that described in the first embodiment can be applied to the timer 43 .

Further, the control unit 141 is provided with an air conditioning performance evaluation unit 176 . The air conditioning performance evaluation unit 176 measures changes in the environment in the room R (for example, changes in temperature in the room R) when the operating state of the air conditioner 110 satisfies a predetermined condition, and based on the result The air conditioning performance of room R is evaluated. That is, the air conditioning performance evaluation unit 176 plays the same role as the air conditioning performance evaluation unit 76 of the server 70 described in the first embodiment.

The memory 142 includes ROM (read only memory) and RAM (Random Access Memory). The memory 142 stores an operation program and setting data of the air conditioner 110 and temporarily stores the calculation result by the control unit 141 . In this embodiment, the memory 142 stores the air conditioning performance information (the air conditioning performance identification table 81 shown in FIG. 5, etc.) of the room R created by the air conditioning performance evaluation unit 176, and the like. That is, the memory 142 plays the same role as the memory 72 of the server 70 described in the first embodiment.

Communication interface 124 is realized by an antenna and a connector. The communication interface 124 exchanges data with the remote controller 60 by infrared communication. Note that the air conditioner 110 is not connected to the Internet in this embodiment. Therefore, the communication interface 124 exchanges data only with the remote controller 60 .

With the above configuration, according to the air conditioner 110, more comfortable air conditioning control can be performed based on the air conditioning performance in the room R in which the air conditioner 110 is installed.

〔summary〕
An air conditioning system according to one aspect of the present invention includes a heat pump cycle and a control section that controls the operation of the heat pump cycle. In this air conditioning system, the control section changes the control contents of the defrosting operation based on the air conditioning performance (for example, heat insulating performance) of the space where air conditioning control is performed by the heat pump cycle. For example, a heat pump cycle includes a compressor that compresses a heat medium, an indoor heat exchanger that functions as a condenser during heating operation and an evaporator during cooling operation, an expansion valve that reduces the pressure of the heat medium, and a heating and an outdoor heat exchanger that functions as an evaporator during operation and as a condenser during cooling operation.

In the above-described air conditioning system according to one aspect of the present invention, when the air conditioning performance of the space is lower than a predetermined air conditioning performance standard, the controller shortens the upper limit of the duration of the defrosting operation. good too. For example, when the air-conditioning performance of the space is lower than that of a standard space, the control unit shortens the upper limit of the duration of the defrosting operation below a preset upper limit. As a result, in a space with poor air conditioning performance, the defrosting operation can be completed in a shorter time, and the temperature drop in the space during the defrosting operation can be suppressed.

Further, in the air conditioning system configured as described above, the control unit may increase the number of times of the defrosting operation when the air conditioning performance of the space is lower than a predetermined air conditioning performance standard. That is, when the air-conditioning performance of the space is lower than that of the standard space, the defrosting operation is completed in a shorter time, and the number of times the defrosting operation is performed is reduced in the space having the standard air-conditioning performance. You may increase it more than the implementation frequency of frost operation. As a result, it is possible to reduce the possibility of insufficient defrosting of the outdoor heat exchanger in a space with poor air conditioning performance.

In the air conditioning system according to one aspect of the present invention described above, the control unit may determine a temperature rise value in the space immediately before performing the defrosting operation based on the air conditioning performance of the space. .

In the above air conditioning system according to one aspect of the present invention, the control unit may evaluate the air conditioning performance of the space from temperature changes in the space during the defrosting operation.

In the air conditioning system according to one aspect of the present invention described above, the heat pump cycle may include a compressor. Then, the control unit performs air conditioning control for causing the temperature in the space to reach a set temperature by a set time, and when the air conditioning performance of the space is higher than a predetermined air conditioning performance standard, the control unit may start the operation of the compressor at a rotation speed within a range in which the energy consumption efficiency of the heat pump cycle is optimal.

Also, an air conditioning system according to another aspect of the present invention includes a heat pump cycle including a compressor, and a control section that controls the operation of the heat pump cycle. In this air conditioning system, the control unit performs air conditioning control such that the temperature in the space reaches a set temperature by a set time based on the air conditioning performance of the space controlled by the heat pump cycle. When the air-conditioning performance of the space is higher than a predetermined air-conditioning performance standard, the control unit starts the operation of the compressor at a rotation speed within a range in which the energy consumption efficiency of the heat pump cycle is optimized.

The number of revolutions within the range in which the energy consumption efficiency of the heat pump cycle is optimal can be determined based on the energy consumption efficiency of the heat pump cycle represented by COP (coefficient of performance), for example. Such a rotation speed includes, for example, the rotation speed when the compressor is in rated operation.

In the air conditioning system according to each aspect of the present invention described above, when the controller determines that the temperature in the space does not reach the set temperature by the set time, the rotation speed of the compressor is reduced to the heat pump. The rotation speed may be increased beyond the range in which the energy consumption efficiency of the cycle is optimal. Here, increasing the rotation speed of the compressor above the range in which the energy consumption efficiency of the heat pump cycle is optimized means, for example, changing the operating state of the compressor from rated operation to normal operation. means.

The air conditioning system according to each aspect of the present invention described above may further include a server capable of information communication with the control unit.

It should be considered that the embodiments disclosed this time are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims rather than the above description, and is intended to include all modifications within the meaning and range of equivalents of the scope of the claims. Also, configurations obtained by combining configurations of different embodiments described herein are also included in the scope of the present invention.

1: Air conditioning system 10: Air conditioner 20: Indoor unit 41: Control unit 50 (of air conditioner): Outdoor unit 52: Compressor 70: Server 71: CPU (control unit)
76: Air conditioning performance evaluation unit 110: Air conditioner (air conditioning system)
R : Room

Claims (7)

a heat pump cycle;
An air conditioning system comprising a control unit that controls the operation of the heat pump cycle,
The control unit shortens the upper limit of the duration of the defrosting operation when the air conditioning performance of the space where air conditioning control is performed by the heat pump cycle is lower than a predetermined air conditioning performance standard.
air conditioning system. The control unit increases the number of times of the defrosting operation when the air conditioning performance of the space is lower than a predetermined air conditioning performance standard.
The air conditioning system according to claim 1. The control unit determines an increase value of the temperature in the space immediately before performing the defrosting operation based on the air conditioning performance of the space.
The air conditioning system according to claim 1 or 2 . The control unit evaluates the air conditioning performance of the space from the temperature change in the space during the defrosting operation.
The air conditioning system according to any one of claims 1 to 3. The heat pump cycle comprises a compressor,
The control unit performs air conditioning control so that the temperature in the space reaches a set temperature by a set time,
When the air conditioning performance of the space is higher than a predetermined air conditioning performance standard, the control unit causes the compressor to start operating at a rotation speed within a range where the energy consumption efficiency of the heat pump cycle is optimal.
The air conditioning system according to any one of claims 1 to 4. When the controller determines that the temperature in the space does not reach the set temperature by the set time, the controller adjusts the rotation speed of the compressor to a rotation speed within a range where the energy consumption efficiency of the heat pump cycle is optimal. raise above
The air conditioning system according to claim 5 . Further comprising a server capable of information communication with the control unit,
The air conditioning system according to any one of claims 1 to 6 .

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