JP2010117084A - Air conditioner ventilation device cooperative system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner ventilation device cooperative system adapted to energy saving. <P>SOLUTION: The air conditioner ventilation device cooperative system includes an air conditioner 10, a ventilation device 50 and an operation control device 90. During cooling operation by the air conditioner 10, when room temperature Tr exceeds a set temperature Ts of the air conditioner 10 and a difference between the room temperature Tr and the set temperature Ts is below a predetermined value PV, the operation control device 90 stops the operation of the air conditioner 10 and operates only the ventilation device 50. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an air conditioner / ventilator interlocking system.

Conventionally, an interlocking system of an air conditioner and a ventilator as described below has been introduced. In this system, for example, when the air conditioner is operating in the cooling operation, when the room temperature is higher than the set temperature of the air conditioner and the outside air temperature is lower than the room temperature, the air conditioner is operated in the cooling operation. Operate the ventilator in non-heat exchange ventilation mode. Here, the non-heat exchange ventilation mode is a ventilation mode that does not involve heat exchange. On the other hand, when the room temperature is higher than the set temperature of the air conditioner and the outside air temperature is higher than the room temperature, the ventilator is operated in the heat exchange ventilation mode while operating the air conditioner in the cooling operation (for example, Patent Document 1). reference).
JP-A-4-281143

  In recent years, there has been a demand for promotion of energy saving. However, in the conventional system, the air conditioner is operated even when the room can be cooled only by the introduction of outside air by the ventilator. For this reason, it has a problem from a viewpoint of energy saving. An object of the present invention is to provide an air conditioner / ventilator interlocking system corresponding to energy saving.

  An air conditioner / ventilator interlocking system according to a first aspect of the present invention includes an air conditioner, a ventilator, and an operation control device. The air conditioner performs indoor air conditioning. The ventilation device ventilates the outside air and the room air. When the room temperature is higher than the set temperature and the outside temperature set by the operator and the difference between the room temperature and the set temperature is equal to or less than a predetermined value, the operation control device stops the air conditioner and operates only the ventilator. .

  In this air conditioner / ventilator linked system, when the air conditioner is in cooling operation, the operation control device is based on the room temperature, the set temperature of the air conditioner set by the operator, the outside air temperature, and a predetermined value. And control the ventilation system. When the room temperature is higher than the set temperature and the outside air temperature and the difference between the room temperature and the set temperature is equal to or less than a predetermined value, only the ventilator is operated and the air conditioner is stopped. For this reason, when room temperature becomes higher than preset temperature, power consumption can be saved compared with the case where an air conditioning apparatus is always operated by air_conditionaing | cooling operation. Therefore, energy saving can be expected.

  The operation control device according to the first invention is a component independent of the air conditioner and the ventilator, but is provided in another form, for example, an indoor unit or a ventilator of the air conditioner. It may be. Moreover, there may be a plurality of air conditioners and ventilators.

  The air conditioner / ventilator according to the second invention is the air conditioner / ventilator interlocking system according to the first invention, wherein the room temperature is higher than the set temperature and the outside air temperature, and the difference between the room temperature and the set temperature is When it is larger than the predetermined value, the operation control device operates the air conditioner and further operates the ventilation device simultaneously.

  In the air conditioner / ventilator linked system, when the difference between the room temperature and the set temperature is larger than a predetermined value, the cooling operation and the ventilator of the air conditioner are operated simultaneously. Since the ventilator is in operation and low temperature outside air is introduced, energy saving by saving power consumption can be expected as compared with the case where only the air conditioner is operated in the cooling operation. Furthermore, since the cooling effect by the cooling operation of the air conditioner can be enhanced and the room can be cooled more quickly, an improvement in comfort can be expected.

  An air conditioner / ventilator interlocking system according to a third invention is an air conditioner / ventilator interlocking system according to the first invention, and the ventilator has two heat exchange ventilation modes and a non-heat exchange ventilation mode. Operates in two ventilation modes. The heat exchange ventilation mode is a ventilation mode in which heat exchange is performed between outside air and room air. The non-heat exchange ventilation mode is a ventilation mode in which only ventilation is performed without heat exchange between the outside air and room air.

  In this air conditioner / ventilator linked system, the operation control device operates the ventilator in the non-heat exchange ventilation mode when the condition that the room temperature is higher than the set temperature and the outside air temperature is satisfied. On the other hand, when the room temperature does not satisfy the condition that it is higher than the set temperature and the outside air temperature, the ventilator is operated in the heat exchange ventilation mode. For this reason, energy saving can be expected from the viewpoint of energy recovery from indoor air cooled by consuming electric power.

  An air conditioner / ventilator interlocking system according to a fourth aspect of the present invention is the air conditioner / ventilator interlocking system according to the first aspect of the present invention, wherein the operation control unit has a set temperature management control unit. The set temperature management control unit manages the set temperature of the air conditioner, further corrects the set temperature and manages it as the second set temperature. The air conditioner operates the cooling operation based on the second set temperature.

  In this air conditioner / ventilator linked system, the operation control device has a set temperature management control unit that manages the set temperature of the air conditioner and further corrects the set temperature to manage it as the second set temperature. The air conditioner operates the cooling operation based on the second set temperature. For this reason, by appropriately setting the second set temperature, the power consumption of the air conditioner can be saved, and energy saving can be expected.

  An air conditioner / ventilator interlocking system according to a fifth aspect of the present invention is the air conditioner / ventilator interlocking system according to the fourth aspect of the present invention. Determine whether the condition is met. When the predetermined condition is satisfied, a predetermined value is added to the set temperature to obtain the second set temperature.

  In the air conditioner / ventilator linked system, the set temperature management control unit determines whether or not the outside air temperature, the room temperature, and the set temperature satisfy predetermined conditions. When the predetermined condition is satisfied, a predetermined value is added to the set temperature to obtain the second set temperature. The second set temperature is higher than the set temperature by the amount by which the predetermined value is added. The air conditioner operates the cooling operation based on the second set temperature. For this reason, power consumption can be saved and energy saving can be expected.

  An air conditioner / ventilator interlocking system according to a sixth aspect of the present invention is the air conditioner / ventilator interlocking system according to the fifth aspect of the present invention, wherein the operation control device further includes a predetermined value determining unit. The predetermined value determination unit holds a predetermined value related table that associates the outside air temperature with the predetermined value, and collates the outside air temperature with the predetermined value related table to determine the predetermined value.

  In the air conditioner / ventilator linked system, the operation control device further includes a predetermined value determining unit. The predetermined value determination unit holds a predetermined value relation table that associates the outside air temperature with a predetermined value. The predetermined value related table is a table in which the outside air temperature is associated with a predetermined value. The predetermined value determining unit determines the predetermined value by comparing the outside air temperature with the predetermined value related table. The operation control device sets the second set temperature using the predetermined value determined by the predetermined value determination unit. The second set temperature is higher than the set temperature by the amount by which the predetermined value is added. The air conditioner operates the cooling operation based on the second set temperature. For this reason, power consumption can be saved and energy saving can be expected.

  An air conditioner / ventilator interlocking system according to a seventh aspect of the present invention is the air conditioner / ventilator interlocking system according to the first aspect of the present invention, wherein the operation control device is a predetermined unit in the operation control of the air conditioner and the ventilator. Has hysteresis.

  In this air conditioner / ventilator linked system, in the operation control of the air conditioner and the ventilator, for example, the temperature serving as the reference for the operation switching operation has a hysteresis in a predetermined temperature range (for example, the reference) Temperature ± 1 ° C). Thereby, it can suppress that the operation mode switches more finely than necessary. If there is a slight change in the room temperature, etc., the operation mode may be changed accordingly.Therefore, comfort may be impaired in some cases, but the temperature used as a reference for the operation switching operation is predetermined. This can be suppressed by providing the hysteresis. For this reason, in addition to the effect of energy saving, the improvement of the comfort in a living room can also be expected.

  An air conditioner / ventilator interlocking system according to an eighth aspect of the present invention includes an air conditioner, a ventilator, and an operation control device. The air conditioner performs indoor air conditioning. The ventilation device ventilates the outside air and the room air. When the room temperature is higher than the set temperature and the outside temperature set by the operator and the difference between the room temperature and the set temperature is equal to or less than a predetermined value, the operation control device stops the air conditioner and operates only the ventilator. . Operation control of the air conditioner and the ventilator is performed based on the outside air temperature, the room temperature, the set temperature, and the predetermined value.

  In this air conditioner / ventilator linked system, when the air conditioner is in heating operation, the operation control device is based on the room temperature, the installation temperature of the air conditioner set by the operator, the outside air temperature, and a predetermined value. And control the ventilation system. When the room temperature is lower than the set temperature and the outside temperature, and the difference between the room temperature and the set temperature is equal to or less than a predetermined value, only the ventilator is operated and the air conditioner is stopped. For this reason, when room temperature becomes lower than preset temperature, a power consumption can be saved compared with the case where an air conditioning apparatus is always operated by heating operation. Therefore, energy saving can be expected.

  The operation control apparatus according to the eighth invention is a component independent of the air conditioner and the ventilator, but is provided in another form, for example, an indoor unit or a ventilator of the air conditioner. It may be.

  In the air conditioner / ventilator linked system according to the first aspect of the present invention, when the air conditioner is operating in the cooling operation and the room temperature is higher than the set temperature and the room temperature is higher than the outside temperature, the difference between the room temperature and the set temperature is If is below a predetermined value, the air conditioner is stopped and only the ventilator is operated. For this reason, when room temperature becomes higher than preset temperature, compared with the case where an air conditioning apparatus is always operated by air_conditionaing | cooling operation, power consumption can be saved and energy saving can be anticipated.

  In the air conditioner / ventilator linked system according to the second aspect of the present invention, when the room temperature is higher than the set temperature and the outside air temperature, and the difference between the room temperature and the set temperature is greater than a predetermined value, the operation control device turns the air conditioner on. The air conditioner is operated and the ventilator is operated at the same time. Compared with the case where only the air conditioner is operated in the cooling operation, the room can be cooled more quickly, and the power consumption can be saved, and energy saving can be expected.

  In the air conditioner / ventilator linked system according to the third aspect of the invention, the ventilator operates in two ventilation modes, a heat exchange ventilation mode and a non-heat exchange ventilation mode. When the condition that the room temperature is higher than the set temperature and the outside air temperature is satisfied, the operation control device operates the ventilation device in the non-heat exchange ventilation mode. On the other hand, when the room temperature does not satisfy the condition that it is higher than the set temperature and the outside air temperature, the ventilator is operated in the heat exchange ventilation mode. For this reason, energy saving can be expected from the viewpoint of energy recovery from indoor air cooled by consuming electric power.

  In the air conditioner / ventilator linked system according to the fourth aspect of the invention, the set temperature management control unit of the operation control device corrects the acquired set temperature of the air conditioner as the second set temperature, and is based on the second set temperature. The air conditioner is in cooling operation. By appropriately setting the second set temperature, the power consumption of the air conditioner can be saved, and energy saving can be expected.

  In the air conditioner / ventilator linked system according to the fifth aspect of the present invention, the set temperature management control unit of the operation control device adds a predetermined value to the set temperature when the outside air temperature, the room temperature, and the set temperature satisfy the predetermined conditions. And the second set temperature. Therefore, the second set temperature becomes higher than the set temperature by the amount by which the predetermined value is added. The air conditioner operates the cooling operation based on the second set temperature. For this reason, power consumption can be saved and energy saving can be expected.

  In the air conditioner / ventilator linked system according to the sixth aspect of the invention, the predetermined value determination unit of the operation control apparatus determines the predetermined value by comparing the outside air temperature with the predetermined value related table. The set temperature management control unit adds the predetermined value to the set temperature to obtain the second set temperature. Therefore, the second set temperature becomes higher than the set temperature by the amount by which the predetermined value is added. The air conditioner operates the cooling operation based on the second set temperature. For this reason, power consumption can be saved and energy saving can be expected.

  In the air conditioner / ventilator linked system according to the seventh aspect of the present invention, the operation control device has a predetermined hysteresis in the operation control of the air conditioner and the ventilator, and the operation is suppressed from being switched more finely than necessary. . For this reason, in addition to the effects of saving power consumption and energy saving, it is possible to improve the comfort of the living room by suppressing the switching of the operation mode of the air conditioner or the ventilation device more finely than necessary.

  In the air conditioner / ventilator linked system according to the eighth aspect of the present invention, when the air conditioner is operating in the heating operation, when the room temperature is lower than the set temperature and the room temperature is lower than the outside temperature, the difference between the room temperature and the set temperature is If is below a predetermined value, the air conditioner is stopped and only the ventilator is operated. For this reason, when room temperature becomes lower than preset temperature, compared with the case where an air conditioning apparatus is always operated by heating operation, power consumption can be saved and energy saving can be expected.

  Here, an air conditioner / ventilator interlocking system according to an embodiment of the present invention will be described with reference to FIGS. 1 to 9.

  As shown in FIG. 1, the air conditioner / ventilator interlocking system mainly includes an air conditioner 10, a ventilator 50, an operation control device 90, and various sensors. The ventilator 50 is opened to the outside through the outdoor side air supply pipe 721 and the outdoor side exhaust pipe 724. The ventilator 50 is opened in the living room via an indoor air supply pipe 722 and an indoor exhaust pipe 723. The operation control device 90 is communicatively connected to the control unit 59 of the ventilation device 50, the indoor control unit 18 of the air conditioner 10, and the outdoor control unit 19. The air conditioner 10 is mainly composed of an indoor unit 11 embedded in the back of the ceiling of an air-conditioned room and an outdoor unit 12 installed outside the room. In the air conditioner 10, various sensors such as a room temperature sensor 18a and an outside air temperature sensor 19a are provided.

  Hereinafter, the configuration and operation of each of these parts will be described in detail with reference to the drawings.

[Configuration of air conditioner / ventilator linked system]
(1) Air conditioning apparatus The air conditioning apparatus 10 according to the present embodiment is mainly composed of an indoor unit 11 and an outdoor unit 12. The indoor unit 11 and the outdoor unit 12 are pipe-connected by a refrigerant communication pipe (not shown).

(1-1) Indoor Unit An indoor control unit 18 is built in the indoor unit 11. The indoor control unit 18 accommodates a control board or the like (not shown) as an electrical component. This control board is communicatively connected to an indoor fan (not shown) disposed in the indoor unit 11, a room temperature sensor 18a, and the like, and an indoor fan (not shown) based on signals transmitted from them. The number of rotations and operation mode are switched. The control board is also connected to the operation control device 90 for communication, and receives various data of the indoor unit 11 (for example, the operation mode of the air conditioner 10 and the set temperature Ts) from the operation control device 90. Note that the description regarding the set temperature Ts and the like will be described in detail when the operation control device 90 is described.

  The outdoor unit 12 is connected to the indoor unit 11 through a refrigerant communication pipe (not shown) through which the refrigerant flows. In the outdoor unit 12, various sensors such as an outside air temperature sensor 19a are provided. An outdoor control unit 19 is provided in the outdoor unit 12. The outdoor control unit 19 is communicatively connected to the indoor control unit 18. In the outdoor control unit 19, a control board (not shown) having a function of controlling the rotation speed of an outdoor fan (not shown) or transmitting information from the outside air temperature sensor 19a to the operation control device 90. ) Is incorporated. The outside air temperature sensor 19a is connected to the outdoor control unit 19 for communication. The outdoor control unit 19 is connected to the operation control device 90 in communication.

(2) Ventilator The ventilator 50 according to the present embodiment is connected to the outdoor side exhaust pipe 724 and the outdoor side air supply pipe 721 which are provided through the outer wall of the living room. Openings in which the outdoor side exhaust pipe 724 and the outdoor side air supply pipe 721 are formed through the outer wall are referred to as an exhaust port 724a and an air supply port 721a, respectively. In addition, an indoor side air supply pipe 722 and an indoor side exhaust pipe 723 are connected to the ventilation device 50 by piping. The indoor side air supply pipe 722 and the indoor side exhaust pipe 723 are opened in the living room.

  In the air conditioner / ventilator linked system according to the present embodiment, the ventilator 50 has a heat exchange function, and as a heat exchange element responsible for the heat exchange function, a so-called all-heat exchange capable of sensible heat exchange and latent heat exchange is possible. A heat exchange element is used. Hereinafter, the heat exchange element 52 means a total heat exchange element capable of total heat exchange. Here, the sensible heat specifically means temperature, and the latent heat specifically means humidity.

(3) Various sensors (outside temperature sensor, room temperature sensor, etc.)
The outside air temperature sensor 19 a is disposed in the outdoor unit 12 and is connected to the indoor control unit 18 for communication. The room temperature sensor 18 a is disposed in the indoor unit 11 and is connected to the outdoor control unit 19 for communication. In addition, the indoor control unit 18 and the outdoor control unit 19 are connected in communication with the operation control device 90. For this reason, the outside air temperature sensor 19a and the room temperature sensor 18a are connected to the operation control device 90 through the indoor control unit 18 and the outdoor control unit 19, respectively.

(4) Operation Control Device The operation control device 90 according to the present embodiment is communicatively connected to the indoor control unit 18, the outdoor control unit 19, the ventilation device control unit 59, and the like.

  As shown in FIG. 3, the operation control device 90 mainly includes a central processing unit 91, a RAM 92, a ROM 93, and an I / O control unit 94. Here, the central processing unit 91, the RAM 92, the ROM 93, the I / O control unit 94, and the set temperature management control unit 913 are, for example, microcomputers and are connected to each other to constitute one integrated circuit. is doing.

  The central processing unit 91 mainly includes a control unit 911, a set temperature management control unit 913, and a calculation unit 912. As shown in FIG. 4, the control unit 911 and the set temperature management control unit 913 read the control program stored in the ROM 93, and the arithmetic unit 912, the RAM 92, and the I / O control unit 94 according to the read control program. Instruct the operation. Mainly, the control unit 911 performs control of the ventilator 50 and other controls, and the set temperature management control unit 913 manages the set temperature Ts of the air conditioner 10 and corrects and sets the set temperature Ts. 2 Setting management of the set temperature Ta is performed. Here, the set temperature Ts is a reference temperature for controlling the operation of the air conditioner 10 so that the temperature in the room, that is, the room temperature Tr is maintained at a desired temperature. In the air conditioner / ventilator linked system according to the present embodiment, the operation control device 90 manages the set temperature Ts and corrects the set temperature Ts by a predetermined method to be described later as a second set temperature Ta. to manage. The operation control device 90 controls the air conditioner 10 and the ventilation device 50 based on the set temperature Ts and the second set temperature Ta.

  As shown in FIG. 4, the calculation unit 912 acquires necessary data from the control unit 911, the installation temperature management control unit 913, the RAM 92, and the ROM 93 in accordance with instructions from the control unit 911 and the set temperature management control unit 913. Performs arithmetic processing (arithmetic arithmetic processing, logical arithmetic processing, etc.). Further, the calculation unit 912 can supply the processing result data of the calculation process to the control unit 911 and the set temperature management control unit 913 in accordance with instructions from the control unit 911 and the set temperature management control unit 913. Further, the calculation unit 912 can write the processing result data of the calculation process in the RAM 92 in accordance with instructions from the control unit 911 and the set temperature management control unit 913.

  As shown in FIG. 4, the RAM 92 can supply various data to the control unit 911 in accordance with instructions from the control unit 911 and the set temperature management control unit 913. The RAM 92 acquires data from the I / O control unit 94 and the input unit 95 and temporarily stores the data, and temporarily stores data transmitted from the calculation unit 912. In addition, the RAM 92 transmits the temporarily stored data to the I / O control unit 94 in accordance with commands from the control unit 911 and the set temperature management control unit 913.

  The ROM 93 stores a control program and various data, and supplies them to the control unit 911 and the set temperature management control unit 913 as shown in FIG. The ROM 93 can supply various data to the arithmetic unit 912 in accordance with instructions from the control unit 911 and the set temperature management control unit 913. Since the control program includes a timer program, the central processing unit 91 can execute the control program at regular time intervals (in this embodiment, the control program is executed at intervals of 2 minutes). ).

  The I / O control unit 94 inputs various data transmitted from the indoor control unit 18, the outdoor control unit 19, and the control unit 59 of the ventilator 50 to the RAM 92, and stores various data stored in the RAM 92. Or output to the indoor unit 11, the outdoor unit 12, or the ventilator 50.

  The I / O control unit 94 receives various data (analog data) such as temperature information transmitted from the control unit 59, the indoor control unit 18, and the outdoor control unit 19 of the ventilation device 50, respectively. The data is converted into a format (digital data) that can be processed by the central processing unit 911.

  The input unit 95 allows the operator to perform operations such as setting the set temperature Ts of the air conditioner 10, switching various operation modes, switching the ventilation mode of the ventilator 50, and the like. It is provided to display the driving status. In the present embodiment, the input unit 95 is connected to a control unit 911, a set temperature management control unit 913, a RAM 92, an I / O control unit, and the like.

[Operation of the air conditioner / ventilator linked system]
In the air conditioner / ventilator linked system according to the present embodiment, the air conditioner 10 and the ventilator 50 are communicatively connected to the operation control device 90. The operation control device 90 controls the air conditioner 10 and the ventilation device 50 in conjunction with each other through this communication connection.

  The room air IA is sucked into the air conditioner 10 along with the operation of the air conditioner 10, conditioned, and then blown out into the room.

  The operation control device 90 is connected to the air conditioner 10 and the ventilation based on the set temperature Ts of the air conditioner 10, the room temperature Tr detected by the room temperature sensor 18a, the outside air temperature To detected by the outside air temperature sensor 19a, and the predetermined value PV. Control is performed in conjunction with the device 50. When the air conditioner 10 is in cooling operation, when the room temperature Tr is higher than the set temperature Ts and the outside air temperature To of the air conditioner 10 and the difference between the room temperature Tr and the set temperature Ts is equal to or less than a predetermined value PV, the air conditioner 10 The operation is stopped, ventilation is performed by operating only the ventilator 50, and the room is cooled by introducing outside air having a temperature lower than the room temperature Tr. On the other hand, when the difference between the room temperature Tr and the set temperature Ts is larger than the predetermined value PV, the air conditioner 10 is operated in a cooling operation, and the ventilator 50 is also operated at the same time to introduce outside air having a temperature lower than the room temperature Tr. .

  Hereinafter, the operation of each part constituting the air conditioner / ventilator interlocking system according to the present embodiment will be described in detail with reference to the drawings.

(1) Operation | movement of an air conditioning apparatus The driving | running operation | movement of the air conditioning apparatus 10 is demonstrated using FIG. When the operation of the air conditioner 10 is started, the refrigerant is supplied from the outdoor unit 12 into the indoor heat exchanger (not shown) in the indoor unit. Here, the indoor heat exchanger (not shown) functions as an evaporator during the cooling operation and as a condenser during the heating operation. Then, the room air IA is sucked into the air conditioner 10 (A2). The sucked indoor air IA is cooled or heated in an indoor heat exchanger (not shown) and then blown out indoors (A1). In this way, indoor cooling or heating is performed.

(2) Operation of Ventilator The ventilator 50 according to the present embodiment includes a heat exchange element 52, and a heat exchange ventilation mode that involves heat exchange and a non-heat exchange ventilation mode that performs only ventilation without heat exchange. It operates in two ventilation modes. In the present embodiment, the heat exchange element 52 is capable of performing sensible heat exchange (sensible heat specifically means temperature) and latent heat exchange (latent heat specifically means humidity). The exchange element is adopted, and total heat exchange ventilation is possible. Hereinafter, the heat exchange ventilation mode and the non-heat exchange ventilation mode of the ventilation device 50 according to the present embodiment will be described with reference to FIGS. 1 and 2.

(2-1) Heat Exchange Ventilation Mode In this ventilation device 50, when heat exchange ventilation using the heat exchange element 52 is performed, the opening 60 is opened by the damper 74. On the other hand, the opening 63 is closed. When the fans 55 and 56 are operated in this state, the indoor exhaust RA is sucked into the ventilator 50 from the indoor suction port 65 via the indoor exhaust pipe 723. The sucked indoor exhaust RA passes through the heat exchange element 52 and is blown out from the outdoor outlet 66 after heat exchange with the outdoor air supply (outside air OA). Then, it is discharged outdoors as outdoor-side exhaust EA via the outdoor-side exhaust pipe 724. At the same time, outdoor-side air supply (outside air OA) is drawn into the ventilator 50 from the outdoor-side intake port 68 via the outdoor-side air supply pipe 721. The sucked outdoor side air supply (outside air OA) passes through the heat exchange element 52 and is blown out from the indoor side outlet 67 after heat exchange with the outdoor side exhaust EA. Then, the indoor air supply SA is supplied indoors via the indoor air supply pipe 722.

(2-2) Non-heat exchange ventilation mode In this ventilation device 50, when non-heat exchange ventilation using the heat exchange element 52 is performed, the opening 63 is opened by the damper 74. On the other hand, the opening 60 is closed. When the fans 55 and 56 are operated in this state, the indoor exhaust RA is sucked into the ventilator 50 from the indoor suction port 65 via the indoor exhaust pipe 723. The sucked indoor exhaust RA is blown out from the outdoor air outlet 66 without passing through the heat exchange element 52 in the non-heat exchange ventilation mode. Then, it is discharged outdoors as outdoor-side exhaust EA via the outdoor-side exhaust pipe 724. At the same time, outdoor-side air supply (outside air OA) is sucked into the ventilator 50 from the outdoor-side intake port 68 via the outdoor-side air supply pipe 721. The sucked outdoor air supply (outside air OA) passes through the heat exchange element 52 and is blown out from the indoor air outlet 67. And indoor side supply air SA is supplied indoors via the indoor side supply pipe 722 (the flow of supply air is the same as in the heat exchange ventilation mode).

(3) Operation of Operation Control Device Here, the flow of processing of management and control of the set temperature Ts by the operation control device 90 and the ventilation mode switching control of the ventilation device 50 will be described according to the flowcharts shown in FIGS. 5 and 6. . FIG. 5 is a flowchart showing the flow of the set temperature Ts changing process by the operation control device 90. FIG. 6 is a flowchart showing the flow of the ventilation mode switching control of the ventilation device 50.

(3-1) Flow of Set Temperature Change Process of Air Conditioner The following set temperature change process is repeatedly executed every 2 minutes in the present embodiment by a timer program included in the control program. This time interval can be changed.

  In step ST <b> 1, the I / O control unit 94 acquires the set temperature Ts input by the input unit 95 in accordance with an instruction from the set temperature management control unit 913 and writes it in the RAM 92. Further, the room temperature Tr and the outside temperature To are acquired from the indoor control unit 18 and the outdoor control unit 19, respectively, and are written in the RAM 92.

  In step ST2, the calculation unit 912 acquires the room temperature Tr and the set temperature Ts from the RAM 92 according to the instruction of the set temperature management control unit 913, and the room temperature Tr is higher than the set temperature Ts or the room temperature Tr is equal to or lower than the set temperature Ts. Determine whether. If the room temperature Tr is higher than the set temperature Ts as a result of the determination by the calculation unit 912 in step ST2, the process proceeds to step ST3. If the result of determination by the calculation unit 912 in step ST2 is that the room temperature Tr is equal to or lower than the set temperature Ts, the process proceeds to step ST4.

  In step ST3, the calculation unit 912 acquires the room temperature Tr and the outside temperature To from the RAM 92 according to the instruction of the set temperature management control unit 913, and the room temperature Tr is higher than the outside temperature To or the room temperature Tr is equal to or less than the outside temperature To. Determine whether. If the room temperature Tr is higher than the outside air temperature To as a result of the determination by the calculation unit 912 in step ST3, the process proceeds to step ST5. As a result of the determination by the calculation unit 912 in step ST3, when the room temperature Tr is equal to or lower than the outside air temperature To, the process proceeds to step ST7.

  In step ST4, the calculation unit 912 acquires the set temperature Ts and the outside temperature To from the RAM 92 according to the instruction of the set temperature management control unit 913, and the set temperature Ts is higher than the outside temperature To or the set temperature Ts is outside. It is determined whether the temperature is equal to or lower than To. If the set temperature Tr is higher than the outside air temperature To as a result of the determination by the calculation unit 912 in step ST4, the process proceeds to step ST6. As a result of the determination by the calculation unit 912 in step ST4, when the set temperature Ts is equal to or lower than the outside air temperature To, the process proceeds to step ST7.

In step ST5, the calculation unit 912 acquires the room temperature Tr, the set temperature Ts, and the predetermined value PV from the RAM 92 according to the instruction of the set temperature management control unit 913, and determines whether or not the following relational expression is satisfied.
To−Ts <PV... If the relational expression is satisfied as a result of the determination by the calculation unit 912 in the relational step ST5, the process proceeds to step ST6. As a result of the determination by the calculation unit 912 in step ST5, when the relational expression is not satisfied, the process proceeds to step ST7.

  In step ST <b> 6, the calculation unit 912 acquires the set temperature Ts and the predetermined value PV from the RAM 92 according to the instruction of the set temperature management control unit 913, and writes the result obtained by adding them to the RAM 92 as the second set temperature Ta.

  In step ST7, the calculation unit 912 acquires the set temperature Ts from the RAM 92 according to the instruction of the set temperature management control unit 913, and writes the value to the RAM 92 as the second set temperature Ta.

  In step ST8, the I / O control unit 94 follows the instruction of the set temperature management control unit 913 according to the instruction of the set temperature management control unit 913, and the air conditioning apparatus 912 sets the second set temperature Ta written and set in the RAM 92 in step ST6 or step ST7. It transmits to the indoor unit 11 of the air conditioning apparatus 10 with the control signal for operating 10.

(3-2) Flow of control in switching ventilation mode of ventilator The following control is executed at regular time intervals by a timer program included in the control program. In this embodiment, the control program is repeatedly executed every 2 minutes. This time interval can be changed.

  In step ST <b> 21, the I / O control unit 94 acquires the set temperature Ts input by the input unit 95 in accordance with an instruction from the control unit 911 and writes it in the RAM 92. Further, the room temperature Tr and the outside temperature To are acquired from the outdoor control unit 18 and the outdoor control unit 19 and written in the RAM 92.

  In step ST22, the calculation unit 912 acquires the room temperature Tr and the set temperature Ts from the RAM 92 according to the instruction of the control unit 911, and determines whether the room temperature Tr is higher than the set temperature Ts or whether the room temperature Tr is equal to or lower than the set temperature Ts. To do. If the room temperature Tr is higher than the set temperature Ts as a result of the determination by the calculation unit 912 in step ST22, the process proceeds to step ST23. As a result of the determination by the calculation unit 912 in step ST22, when the room temperature Tr is equal to or lower than the set temperature Ts, the process proceeds to step ST24.

  In step ST23, the calculation unit 912 acquires the room temperature Tr and the outside temperature To from the RAM 92 according to the instruction of the control unit 911, and determines whether the room temperature Tr is higher than the outside temperature To or whether the room temperature Tr is equal to or less than the outside temperature To. To do. If the room temperature Tr is higher than the outside air temperature To as a result of the determination by the calculation unit 912 in step ST23, the process proceeds to step ST25. As a result of the determination by the calculation unit 912 in step ST23, when the room temperature Tr is equal to or lower than the outside temperature To, the process proceeds to step ST24.

  In step ST24, the control unit 911 generates a control signal for setting the ventilation mode of the ventilation device 50 to the heat exchange ventilation mode, and writes the control information to the RAM 92 via the calculation unit 912.

  In step ST25, the control unit 911 generates a control signal for setting the ventilation mode of the ventilation device 50 to the non-heat exchange ventilation mode, and writes the control information to the RAM 92 via the calculation unit 912.

  In step ST26, the I / O control unit 94 operates the ventilator 50 according to the instruction from the control unit 911. The control information on the ventilation mode of the ventilator 50, which is written in the RAM 92 by the control unit 911 in steps ST24 and ST25. Along with the signal for transmitting to the ventilator 50.

  The operation control device 90 controls the ventilation device 50 by executing the above steps ST21 to ST26. When the air conditioner 10 is in the cooling operation, when the condition that the room temperature Tr is higher than the set temperature Ts and the outside air temperature To is satisfied, the ventilator 50 operates in the non-heat exchange ventilation mode. On the other hand, when the room temperature Tr does not satisfy the condition that the room temperature Tr is higher than the set temperature Ts and the outside air temperature To, the ventilator 50 operates in the heat exchange ventilation mode.

[Characteristics of air conditioner / ventilator linked system]
(1)
In the air conditioner / ventilator interlocking system according to the present embodiment, the operation control device 90 controls the air conditioner 10 and the ventilator 50 in conjunction with each other. In the air conditioner / ventilator linked system according to the present embodiment, the operation control device 90 manages the set temperature Ts of the air conditioner 10, the room temperature Tr is higher than the set temperature Ts and the outside temperature To, and When the difference between the outside temperature To and the room temperature Ts is smaller than the predetermined value PV, the set temperature management control unit 913 of the operation control device 90 corrects the set temperature Ts by adding the predetermined value PV to the second set temperature Ta. And The operation control device 90 manages the set temperature Ts and the second set temperature Ta, and controls the air conditioner 10 and the ventilator 50 in conjunction with each other based on the set temperature Ts and the second set temperature Ta. This is the feature of the air conditioner / ventilator interlocking system according to the present embodiment. For example, when the room temperature Tr is higher than the set temperature Ts and the outside air temperature To and the difference between the outside air temperature To and the room temperature Tr is smaller than the predetermined value PV, the second set temperature Ta adds the predetermined value PV to the set temperature Ts. Therefore, when the difference between the room temperature Tr and the set temperature Ts is equal to or less than the predetermined value PV, the room temperature Tr is equal to or less than the second set temperature Ta set by the set temperature management control unit 913 of the operation control device 90. It becomes. For this reason, the air conditioning apparatus 10 stops. Only the ventilation device 50 is operated by the operation control device 90. As a result, the room is cooled by introducing the outside air OA having a temperature lower than the room temperature Tr. While the above conditions are satisfied, the air conditioner 10 stops operating, so that power consumption can be saved.

  On the other hand, when the room temperature Tr is higher than the set temperature Ts and the outside temperature To and the difference between the room temperature Tr and the set temperature Ts is larger than the predetermined value PV, the set temperature management control unit 913 of the operation control device 90 It becomes higher than the set second set temperature Ta. For this reason, the air conditioning apparatus 10 operates in the cooling operation. That is, the air conditioning apparatus 10 and the ventilation apparatus 50 are operated simultaneously. Due to the cooling effect by introducing the outside air OA at a temperature lower than the room temperature Tr, it is possible to save power consumption as compared with the case where only the air conditioner 10 is operated to cool the room. In addition, it is conceivable that the cooling efficiency is improved and the room can be cooled more quickly.

  Even when the outside air temperature To is sufficiently lower than the room temperature Tr and a cooling effect can be obtained only by introducing the outside air, compared with the conventional air conditioner / ventilator linked system that operates the air conditioner 10, In the air conditioner / ventilator linked system according to the embodiment, energy saving can be expected.

(2)
In the air conditioner / ventilator linked system according to the present embodiment, the ventilator 50 has a heat exchange element capable of total heat exchange, that is, sensible heat exchange and latent heat exchange, and is capable of total heat exchange ventilation. is there. Sensible heat specifically means temperature, and latent heat means specifically humidity. In summer and intermediate periods, the outdoor temperature is generally high, the humidity is high, and sensible heat and latent heat are excessive. On the other hand, the room air-conditioned by the air conditioner 10 has a lower temperature and lower humidity than the outdoor. In order to cool a hot room in the summer or the middle period, the air conditioner 10 must be operated by consuming electric power. Therefore, if the sensible heat and latent heat are exchanged between the conditioned indoor air IA and the outside air OA that is the supply air, the power consumed to cool the indoor air IA can be recovered to some extent. Thus, the air-conditioning apparatus / ventilator linked system according to the present embodiment can be expected to save energy from the viewpoint of energy recovery from the indoor air IA that is cooled by consuming electric power.

[Modification]
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to this Embodiment, A various change is possible in the range which does not deviate from the summary of invention.

(A)
The air conditioner / ventilator linked system according to this embodiment includes one air conditioner 10, a ventilator 50 having a total heat exchange function, and an operation control device 90. System. And the operation control apparatus 90 is independent of the air conditioning apparatus 10 and the ventilation apparatus 50, and performs those operation control. However, this invention is not limited to this, For example, the air conditioning apparatus 10 and the ventilation apparatus 50 may be provided with two or more units. Moreover, the number of the air conditioning apparatus 10 and the ventilation apparatus 50 does not need to correspond. For example, the present invention can also be applied to a system having a plurality of air conditioners 10 and ventilators 50 in one section such as an office. In this case, a collective controller that collectively manages and controls the set temperature Ts, the operation mode, and the like of the plurality of air conditioners 10 is required.

(B)
In the air conditioner / ventilator linked system according to the present embodiment, the operator directly sets the set temperature Ts of the air conditioner 10 and switches the operation mode through the input unit 95 of the operation control device 90. For example, the operator may set the set temperature Ts of the air conditioner 10 or switch the operation mode using a remote controller or the like.

(C)
In the air conditioner / ventilator linked system according to the present embodiment, the ventilator 50 having the total heat exchange type heat exchange element 52 having the functions of sensible heat exchange and latent heat exchange is employed. However, the heat exchange element 52 may be a sensible heat exchange type heat exchange element that does not have a latent heat exchange function and has only a sensible heat exchange function. In this case, in the sensible heat exchange type heat exchange element, only sensible heat is exchanged between the supply air (outside air OA) and the exhaust gas (indoor air RA).

(D)
In the air conditioner / ventilator linked system according to the present embodiment, the value of the predetermined value PV used when setting the second set temperature Ta is fixed, but the predetermined value PV is fixed. For example, the value may be determined according to the outside temperature To. For example, a table in which the outside air temperature To and the predetermined value PV are associated in advance (hereinafter referred to as a predetermined value related table PVT) is stored, the external air temperature To is collated with the predetermined value related table PVT, and the predetermined value PV is obtained. It may be determined.

  FIG. 7 is a block diagram of the operation control device 90 in the air conditioner / ventilator linked system according to Modification D, and further includes a predetermined value determining unit 915 that determines the predetermined value PV according to the outside air temperature To. The predetermined value determining unit 915 has an EEPROM 98 which is a kind of storage device that can electrically rewrite the contents. The EEPROM 98 holds a predetermined value relation table PVT that associates the outside air temperature To with a predetermined value PV, and a predetermined value PV. As shown in FIG. 8, the predetermined value related table PVT includes items of a first column, a second column, and a third column of each row, an index, a conditional expression indicating the temperature range of the outside air temperature To, and a predetermined value PV. . If the conditional expression up to one line before the last line is not satisfied, the conditional expression of the last line is always satisfied. Here, for simplification, the items of the index of the predetermined value related table PVT, the conditional expression indicating the temperature range of the outside air temperature To, and the predetermined value PV are respectively represented as the first column, the second column, and the third column. FIG. 9 is a flowchart showing the flow of processing for determining the predetermined value. Hereinafter, an air conditioner / ventilator interlocking system according to Modification D of the present invention will be described with reference to FIG. 9 and the like.

  In step ST31, the arithmetic unit 912 initializes the counter Cnt with 0 (initialization of the counter Cnt) in accordance with an instruction from the control unit 912. The counter Cnt is used for repetitive processing for reading line by line from the predetermined value related table PVT.

  In step ST <b> 32, the calculation unit 912 reads the predetermined value related table PVT from the EEPROM 98 and writes it in the RAM 92 according to the instruction of the control unit 911.

  In step ST <b> 33, the I / O control unit 94 acquires the outside air temperature To in accordance with an instruction from the control unit 911 and writes it in the RAM 92.

  In step ST34, the calculation unit 912 increases the value of the counter Cnt by “1” in accordance with an instruction from the control unit 911.

  In step ST35, the calculation unit 912 reads the line PVT (Cnt) having an index corresponding to the number of the counter Cnt from the predetermined value related table PVT written in the RAM 92 in step ST32 in accordance with the instruction of the control unit 911. The conditional expression in the second column is extracted, written to the RAM 92, and the process proceeds to step ST36.

  In step ST36, the calculation unit 912 determines whether or not the outside air temperature To acquired in step ST33 satisfies the conditional expression extracted in step ST35, according to the instruction of the control unit 911. If the conditional expression is satisfied, the process moves to step ST37. If not, the process returns to step ST34 and the same procedure is repeated. If the conditional expression is not satisfied until one line before the last line, the conditional expression of the last line is always satisfied, and the process proceeds to step ST37.

  In step ST37, the calculation unit 912 writes the value in the third column of the row corresponding to the index written in the counter Cnt into the predetermined value PV stored in the EEPROM 98 according to the instruction of the control unit 911 (overwriting). The predetermined value PV is determined, and the process moves to step ST38.

  In step ST38, the arithmetic unit 912 initializes the counter Cnt with 0 again according to the instruction of the control unit 911, and ends the predetermined value determination process.

(E)
The predetermined value related table PVT of FIG. 8 cited in the description of the modification D is an example, and a table holding appropriate contents can be adopted according to the situation. Further, the predetermined value related table PVT according to the modified example D is a fixed table, but is not necessarily fixed. For example, a mechanism for generating a table is provided, and the air conditioner 10 is installed. It may be automatically generated based on the outside temperature To of the place, the comfort of the resident, and the like.

(F)
In the air conditioner / ventilator linked system according to the present embodiment, the operation control device 90 has a relationship between the outside air temperature To, the room temperature Tr, and the set temperature Ts in the operation control of the air conditioner 10 and the ventilator 50. Although the operation control is performed based on this, a constant temperature difference, for example, ± 1 ° C. hysteresis may be given to the outside air temperature To, the room temperature Tr, and the set temperature Ts as the operation switching timing.

  In the air conditioner / ventilator linked system according to Modification F, in the operation switching operation of the air conditioner 10 and the ventilator 50, the reference temperature of the operation switching operation has a hysteresis in a predetermined temperature range. (For example, reference temperature ± 1 ° C.). For example, when there is a minute change in the room temperature Tr or the like, if the operation mode is switched finely accordingly, the comfort may be impaired depending on the case. By giving a predetermined hysteresis to the temperature at which the operation mode is switched, it is possible to prevent the operation mode from being switched more finely than necessary. As an example, let us consider a case where the room temperature Tr is higher than the set temperature Ts and the outside air temperature To and the difference between the room temperature Tr and the set temperature Ts is larger than a predetermined value PV in the air conditioner / ventilator linked system according to the fifth invention. In this case, since the second set temperature Ta is lower than the room temperature Tr, the air conditioner 10 operates in the cooling operation. Thereafter, it is assumed that the room temperature Tr becomes equal to or lower than the second set temperature Ta due to the cooling effect of the air conditioner 10. That is, this is a case where the temperature falls to a temperature obtained by adding the predetermined value PV to the set temperature Ts of the air conditioner 10. At room temperature Tr at this time, the cooling operation is not stopped yet. If the room temperature Tr rises again, the air conditioner 10 remains operating in the cooling operation. Then, the cooling operation of the air conditioner 10 is stopped when the room temperature Tr further decreases by 1 ° C.

  In this way, by giving a predetermined hysteresis to the temperature serving as a reference for the operation mode switching operation, for example, it is possible to suppress the operation from being switched more finely than necessary due to fine fluctuations such as room temperature. The improvement of comfort can be expected. Note that the width of this hysteresis may be fixed at all times, for example, depending on the outside air temperature To at the place where the air conditioner 10 is installed, the fluctuation of the outside air temperature To, the comfort of the occupant, etc. The value may be changed.

(G)
In the air conditioner / ventilator linked system according to the present embodiment, the indoor unit 11 of the air conditioner 10 is a so-called ceiling-buried indoor unit, but the indoor unit 11 is a ceiling-suspended indoor unit, wall-mounted. It may be a type indoor unit or the like.

(H)
In the air conditioner / ventilator linked system according to the present embodiment, the switching control of the operation mode of the ventilator 50 is based on the relationship between the room temperature Tr, the set temperature Ts, and the outside air temperature To. In addition, for example, the relationship between the temperature Tr1 lower than the room temperature Tr by a certain temperature, the set temperature Ts, and the outside air temperature To may be used as the determination condition.

(I)
In the air conditioner / ventilator linked system according to the present embodiment, the air conditioner 10 and the ventilator 50 are independent without being connected by piping, but are not necessarily independent.

  For example, the indoor air supply SA is supplied to the living room via the indoor unit 11 of the air conditioner 10, and the indoor exhaust RA is directly connected to the ventilator 50 without passing through the indoor unit 11 of the air conditioner 10. And may be discharged to the outside as the outdoor side exhaust EA through the outdoor side exhaust pipe 724 and the exhaust port 724a.

  Alternatively, the air conditioner and the ventilator may be connected by piping, and the indoor side air supply SA and the indoor side exhaust RA may both be passed through the indoor unit 11 of the air conditioner 10.

  The air conditioning apparatus / ventilation apparatus interlocking system according to the present invention can be expected to save energy in the air conditioning apparatus by utilizing the introduction of outside air by the ventilation apparatus, and is effective for air conditioning and ventilation in buildings and houses.

System configuration diagram of an air conditioner / ventilator interlocking system according to an embodiment Side view of a ventilator according to an embodiment Configuration diagram of an operation control apparatus according to an embodiment The figure which shows the flow of the control signal and data of the operation control apparatus which concern on embodiment The flowchart which shows the flow of the preset temperature change process in the operation control apparatus which concerns on embodiment. The flowchart which shows the flow of the ventilation mode switching process in the operation control apparatus which concerns on embodiment. The block diagram of the operation control apparatus which concerns on the modification (D) of embodiment The figure which shows the example of the predetermined value related table of the driving | running control apparatus which concerns on the modification (D) of embodiment. The flowchart which shows the flow of the predetermined value determination process in the operation control apparatus which concerns on the modification (D) of embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Air conditioning apparatus 50 Ventilation apparatus 90 Operation control apparatus 913 Set temperature management control part 915 Predetermined value determination part OA Outside air IA Indoor air Tr Indoor temperature Ts Set temperature To Outside temperature Ta Second set temperature PV Predetermined value PVT Predetermined value related table

Claims (8)

An air conditioner (10) that performs indoor air conditioning;
A ventilator (50) for ventilating outside air (OA) and room air (IA);
While the air conditioner is operating in the cooling operation, the room temperature (Tr) is higher than the set temperature (Ts) and the outside air temperature (To) set by the operator, and the difference between the room temperature and the set temperature is a predetermined value (PV). When the following, an operation control device (90) for stopping the air conditioner and operating only the ventilation device;
An air conditioner / ventilator linked system (1). When the room temperature is higher than the set temperature and the outside temperature, and the difference between the room temperature and the set temperature is greater than the predetermined value, the operation control device operates the air conditioner in a cooling operation and simultaneously operates the ventilation device. ,
The air conditioner / ventilator interlocking system (1) according to claim 1. The ventilator operates in two ventilation modes, a heat exchange ventilation mode with heat exchange and a non-heat exchange ventilation mode in which only ventilation is performed without heat exchange,
The operation control device operates the ventilation device in the non-heat exchange ventilation mode when the room temperature is higher than the set temperature and the outside temperature, and operates the ventilation device in the heat exchange ventilation mode otherwise. ,
The air conditioner / ventilator interlocking system (1) according to claim 1. The operation control device includes:
A set temperature management control unit (913) for managing the set temperature and setting and managing the second set temperature (Ta) obtained by correcting the set temperature;
Based on the second set temperature, the cooling operation of the air conditioner is operated.
The air conditioner / ventilator interlocking system (1) according to claim 1. The set temperature management control unit sets the second set temperature by adding the predetermined value to the set temperature when the outside air temperature, the room temperature, and the set temperature satisfy the predetermined conditions.
The air conditioner / ventilator interlocking system (1) according to claim 4. The operation control device further includes a predetermined value determining unit (915) that holds a predetermined value relation table (PVT) that associates the outside air temperature with the predetermined value.
The predetermined value determination unit determines the predetermined value by collating an outside air temperature with the predetermined value related table;
The air conditioner / ventilator interlocking system (1) according to claim 5. The operation control device has a certain hysteresis in the operation control of the air conditioner and the ventilation device,
The air conditioner / ventilator interlocking system (1) according to claim 1. An air conditioner (10) that performs indoor air conditioning;
A ventilator (50) for ventilating outside air (OA) and room air (IA);
While the air conditioner is operating in the heating operation, the room temperature (Tr) is lower than the set temperature (Ts) and the outside air temperature (To) set by the operator, and the difference between the room temperature and the set temperature is a predetermined value (PV). When the following, an operation control device (90) for stopping the air conditioner and operating only the ventilation device;
An air conditioner / ventilator linked system (2).

Images