JPH10232040A - Air-conditioning system device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effect the optimum ventilation in accordance with an atmosphere and contrive the improvement of comfortable property by a method wherein the average value of detected room temperatures and the average value of set objective temperatures are obtained to send the average value data to a ventilation unit and ventilating operation is controlled in accordance with the average value data from a central controller. SOLUTION: The data of an objective temperature is sent into a supply unit 50 while average value data, such as an average indoor temperature, an average objective temperature and the like, are sent into an air-condition unit 20 of corresponding system. An operation mode, selected by an air-conditioning unit 20 having the highest order of preference, is selected as a ventilation control mode, then, average value data, such as the average indoor temperature of all rooms, the average objective temperature of all rooms, an average indoor temperature, an average outdoor air temperature and the like, as well as the data of selected operation mode are sent into an air- conditioning ventilation unit 60. The ventilating operation is controlled in accordance with the average value data while a control form is changed in accordance with the operation mode. According to this method, the optimum ventilation in accordance with an atmosphere can be effected and unnecessary indoor temperature change is eliminated whereby the comfortable property can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning system for supplying air for air conditioning to a room to be conditioned by a duct.

[0002]

2. Description of the Related Art As shown in FIG.
A ventilation unit 2, an air conditioning unit 3, and a duct 4 are provided, and indoor air sucked by the suction unit 1 is sent to the air conditioning unit 3 via the ventilation unit 2,
There is an air conditioner that supplies the air for air conditioning produced in the above to the room to be air conditioned.

The air conditioning unit 3 comprises an indoor unit and an outdoor unit, and is provided with a remote controller 3a for setting operating conditions.
The ventilation unit 2 discharges a part of the room air sucked by the suction unit 1 to the outside, introduces outside air, and adds it to the air supplied from the suction unit 1 to the air conditioning unit 3 to thereby control the room to be air-conditioned. And a remote controller 2a for adjusting the ventilation air volume is provided as an accessory.

[0004] The ventilation unit 2 is provided with a total heat exchanger so that ventilation can be performed in a state where the temperature in the room to be conditioned does not change as much as possible. This total heat exchanger performs heat exchange between room air discharged outside and outside air introduced from outside.

However, the heat exchange efficiency of the total heat exchanger is only about 60%, and depending on the conditions of the room temperature and the outside air temperature, there is a concern that the remaining 40% of the non-heat exchange action may cause an unnecessary change in the room temperature. is there. For example, during cooling, low-temperature indoor air is discharged and high-temperature outside air is introduced. However, since the heat exchange efficiency between the room air and the low temperature is not good, the indoor temperature is low. Will rise.
As a result, much of the air conditioning capacity of the air conditioning unit is spent on lowering the temperature of the introduced outside air, and is wasted.

Therefore, an exhaust (room air) temperature sensor and an outside air temperature sensor are provided in a ventilation unit, and a difference between the detected temperatures of the two temperature sensors is obtained during operation. Then, if the temperature difference is small or the temperature difference is reversed, measures may be taken such as increasing the feed rate of the ventilation unit and directly using the heat of the outside air for air conditioning.

[0007]

However, in the above measures, the ventilation unit must be newly provided with an exhaust temperature sensor and an outside air temperature sensor. Further, when a system in which a plurality of air conditioning units (one refrigeration cycle is one unit) is constructed in one building, the operation mode of each air conditioning unit may be different from each other such as cooling and heating. . In this case, the operation of the ventilation unit (run / stop and air flow) is determined only according to the state of the specific air conditioning unit at the connection destination, and is controlled independently of the state of the other air conditioning units. In this case, it is difficult to minimize the energy loss of the entire air conditioning system.

[0008] The present invention has been made in view of the above circumstances,
Its purpose is to provide optimal ventilation according to the environment without providing multiple temperature sensors in the ventilation unit,
Accordingly, it is an object of the present invention to provide an air conditioning system device that can eliminate unnecessary room temperature changes during ventilation to improve comfort and minimize energy loss during ventilation.

[0009]

Means for Solving the Problems First Invention (Claim 1)
The air conditioning system device includes an indoor unit that sends air for air conditioning to a plurality of air-conditioned rooms, an outdoor unit that forms a refrigeration cycle together with the indoor units, an indoor temperature detection unit provided in each of the air-conditioned rooms, and a target temperature setting unit. A plurality of air conditioning units, a ventilation unit that introduces outside air to ventilate each of the air-conditioned rooms, and a room that is connected to each of the air conditioning units and the ventilation unit and that is detected by the room temperature detection means. The average value of the temperature and the average value of the target temperatures set by the respective target temperature setting means are determined, and a central controller that sends the average value data to the ventilation unit, provided in the ventilation unit, from the central controller And control means for controlling the ventilation operation in accordance with the average value data.

An air conditioning system according to a second invention (claim 2) is the air conditioning system according to the first invention, wherein the outdoor unit of each air conditioning unit is provided with an outside air temperature detecting means. The central controller further calculates an average value of the outside air temperature detected by each of the outside air temperature detection means, and sends the average value data to the ventilation unit.

An air conditioning system according to a third invention (claim 3) is the air conditioning system according to the first or second invention, wherein an indoor humidity detecting means is provided in each room to be air-conditioned. The central controller further calculates an average value of the indoor humidity detected by each indoor humidity detecting means,
This average data is sent to the ventilation unit.

An air conditioning system according to a fourth aspect of the present invention is the air conditioning system according to any one of the first, second and third aspects, wherein each air conditioning unit has a selective operation function of cooling and heating. The central controller further informs the ventilation unit of the operating mode selected for each air conditioning unit. The ventilation unit changes the control mode of the ventilation operation according to the average value data according to the operation mode notified from the central controller.

An air conditioning system according to a fifth aspect of the present invention is the air conditioning system according to any of the first, second and third aspects, wherein each air conditioning unit has a selective operation function of cooling and heating. The central controller further informs the ventilation unit of the operating mode selected for each air conditioning unit. When cooling and heating are mixed in the operation mode of each air conditioning unit, the ventilation unit sets the operation mode selected by the air conditioning unit with higher priority as the ventilation control operation mode, and performs the ventilation operation according to the average value data. Is made different depending on the ventilation control operation mode.

An air conditioning system according to a sixth aspect of the present invention is the air conditioning system according to any one of the first, second and third aspects, wherein each air conditioning unit has a selective operation function of cooling and heating. , At least three of which can be individually shut down. The central controller further informs the ventilation unit of the operating mode selected for each air conditioning unit. When one of the air conditioning units is in operation and cooling and heating are mixed in the operating mode of the operating air conditioning unit, the ventilation unit is selected as the air conditioning unit with the highest priority among the operating air conditioning units. The operation mode is set as a ventilation control operation mode, and the control mode of the ventilation operation according to the average value data is made different according to the ventilation control operation mode.

An air conditioning system apparatus according to a seventh aspect of the present invention is an indoor unit for sending air for air conditioning to a plurality of rooms to be air conditioned.
An outdoor unit that forms a refrigeration cycle together with the indoor unit, a plurality of air conditioning units having an indoor temperature detection unit and a target temperature setting unit provided in each of the air-conditioned rooms, and an outdoor air unit provided in correspondence with each of the air conditioning units. And a ventilation unit for ventilating each of the air-conditioned rooms, and an average value of the room temperature detected by the room temperature detecting means and the target temperature setting connected to the air conditioning unit and the ventilation unit. The average value of the target temperature set by the means is determined, the difference between the average room temperature and the average target temperature is determined, and a central controller that sends the temperature difference data to the ventilation unit, provided in the ventilation unit, Control means for controlling the ventilation operation according to the temperature difference data from the central controller.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 20 denotes an air conditioning unit that includes an indoor unit 30 and an outdoor unit 40, and generates air for air conditioning by a refrigeration cycle formed by the indoor unit 30 and the outdoor unit 40, and blows out the air from the indoor unit 30. The indoor unit 30 has an indoor controller 31, and the outdoor unit 40 has an outdoor controller 41. The two controllers 31, 41 are connected by the serial signal line 21.

The indoor controller 31 includes two indoor fans.
32, indoor temperature sensor 33, heat exchanger temperature sensor (2
), An indoor humidity sensor 35, and the like. In addition, between the connection between the indoor controller 31 and the indoor fan 32,
A fan motor tap switching relay (not shown) for switching the rotation speed (= speed) ri (rps) of the indoor fan 32 is interposed.

The outdoor controller 41 includes a compressor 42, an outdoor fan 43, an outside air temperature sensor 44, and a heat exchanger temperature sensor 4.
5 are connected. The outdoor controller 41 and the compressor 4
An inverter (not shown) for varying the number of revolutions (= speed, capacity) fi (rps) of the compressor 42 is interposed between the connection with the compressor 2.

When a plurality of air conditioning units 20 are provided, for example,
Units (up to three) are installed. An address i (= 1 to 3) is set for each air conditioning unit 20 at the time of installation. In addition, each air conditioning unit 20 can set an individual operation mode and operate / stop.

A plurality of units, for example, three units (up to a maximum of four units for each air conditioning unit 20) attached to these air conditioning units 20
Are provided. In addition, for each supply unit 50, the address j (= 1
To 4) are set.

The supply unit 50 is installed in the room to be air-conditioned, and is connected to the indoor unit 30 through a ventilation duct.
, And has a supply controller 51 and a remote controller 52 for a private room, which is a remote control type operation device. One function of the private room remote controller 52 is a target temperature adjustment input means (high, standard, low).

The supply controller 51 is connected to a VAV damper (variable air volume damper) 53, an outlet fan 54, an indoor temperature sensor (indoor temperature detecting means) 55, a light receiving section 56, and the like. By changing the opening degree of the VAV damper 53, the supply amount of air-conditioning air to the room can be adjusted.

Reference numeral 60 denotes an air-conditioning ventilation unit having an air-conditioning ventilation controller 61. The ventilation fan 62 is connected to the air conditioning ventilation controller 61. The air-conditioning ventilation unit 60 discharges a part of the room air sucked from each room to be air-conditioned and supplied to the air-conditioning units 20, and introduces outside air into the air supplied to the air-conditioning units 20. In addition, the air-conditioned rooms are ventilated, and a total heat exchanger is provided so that ventilation can be performed in a state where the room temperature of each air-conditioned room does not change as much as possible. This total heat exchanger performs heat exchange between room air discharged outside and outside air introduced from outside.

One (up to two) air conditioning / ventilation units 60 are installed. A local ventilation fan unit 70 is installed in a toilet, a washroom, a bath, or the like, and has a local ventilation fan communication controller 71. In the local ventilation fan communication controller 71,
The ventilation fan 72 and the indoor temperature sensor 73 are connected.

Each air-conditioning unit 2 configured as described above
0, each supply unit 50, air conditioning ventilation unit 60,
And each local ventilation fan unit 70 is mutually connected by the bus line 80.

The bus line 80 is connected to a remote control type operating device, a so-called center remote controller 90, as a central controller. The center remote controller 90 not only has an original remote control function for setting operating conditions and the like, but also controls the entire system.

The air conditioning unit 20, the supply unit 50, the air conditioning and ventilation unit 60, and the local ventilation fan unit 7
The air conditioner system in which a plurality of air conditioners are combined is constituted by the bus line 80, the bus line 80, and the center remote controller 90.

FIG. 2 shows what data is exchanged via the bus line 80 with the center remote controller 90 at the center. First, the center remote controller 90
It has functions such as air-conditioning and ventilation unit interlock control, average indoor temperature calculation, target temperature setting, average target temperature calculation, target temperature correction control, communication abnormality determination, average outside air temperature calculation, and average humidity calculation.

The indoor controller 31 has functions such as control of the indoor fan 32 and Hz control of the outdoor controller 41 (control of the operating frequency of the compressor). The supply controller 51
It has functions such as opening degree control of the VAV damper 53 and speed (air volume) control of the outlet fan 54.

The air conditioning / ventilation controller 61 includes a ventilation fan 62
Function such as PI control (feedback control). Tso is a reference target temperature for all the air-conditioned rooms, and is set by the center remote controller 90.

Taij is the room temperature of each room to be conditioned,
The temperature is detected by the room temperature sensor 55 in the j-th (= 1 to 4) supply unit 50 of the i-th (= 1 to 3) air conditioning unit 20 system.

ΔTsij is a target temperature correction value, which is determined by the supply controller 51 based on the setting operation (high, standard, low) of the private room remote control 52 in the j-th supply unit 50 of the i-th air conditioning unit 20 system. It is determined.

Αij is a position correction value in the j-th supply unit 50 of the i-th air-conditioning unit 20 system according to the mounting position (high place, low place, etc.) of the room temperature sensor 55, and operation of the dip switch Is determined by the supply controller 51 based on

Tscij is a target temperature for each air-conditioned room determined by the target temperature correction control of the center remote controller 90, and is a reference target temperature Ts set by the center remote controller 90.
o, the target temperature correction value ΔTsij determined by the j-th supply unit 50 of the i-th air conditioning unit 20 system, and the position correction value α determined by the supply unit 50
It is obtained by calculation using ij.

Tscij = Tso + ΔTsij + αij Note that 20 ° C.
≤Tso≤30 ℃, -3 ℃ ≤ΔTsi≤ + 3 ℃, -3 ℃ ≤αi ≤ + 4 ℃
There is a condition.

Tami is the average room temperature (average of each room temperature Taij) of a plurality of conditioned rooms of the i-th air conditioning unit 20 system, and is calculated by calculating the average room temperature of the center remote controller 90.

Tscmi is an average target temperature (average value of each target temperature Tscij) of a plurality of conditioned rooms of the i-th air conditioning unit 20 system, and is obtained by calculating an average target temperature of the center remote controller 90.

Hai is the humidity of the indoor air taken into the indoor unit 30 from each room to be air-conditioned, and is detected by the indoor humidity sensor 35 of the indoor unit 30 of the i-th air conditioning unit 20 system. Toi is the outside air temperature, and the i-th air conditioning unit 2
It is detected by the outside air temperature sensor 44 of the outdoor unit 40 of the 0 system.

Tamix is the average temperature of all the rooms in all the conditioned rooms in the building (the average value of all the room temperatures Taij).
And is obtained by calculating the average room temperature of the center remote controller 90.

Tscmix is the average target temperature of all the rooms in all the air-conditioned rooms in the building (the average value of all target temperatures Tscij), and is obtained by calculating the average target temperature of the center remote controller 90.

Hax is the average indoor humidity in all the conditioned rooms in the building (the average value of the indoor humidity Hai detected by each air conditioning unit 20), and is obtained by calculating the average humidity of the center remote controller 90.

Tox is the average outside air temperature (each air conditioning unit 2
The average value of the outside air temperature Toi detected at 0) is calculated by the average outside air temperature calculation of the center remote controller 90. The center remote controller 90 includes the following [1] to [4] as main functional means in addition to the above-described calculation functions.

[1] Target temperature Tsc obtained for each room to be air-conditioned
Transmission means for transmitting ij data to each supply unit 50. [2] Transmission means for transmitting average value data such as the average room temperature Tami and the average target temperature Tscmi to the air conditioning unit 20 of the corresponding system.

[3] When the cooling operation and the heating operation are mixed in each operating air conditioning unit 20, the operation mode Mi selected by the air conditioning unit 20 having the highest priority is selected as the ventilation control operation mode Mm. Selection means to do.

[4] All room average indoor temperature Tamix, all room average target temperature Tscmix, average indoor humidity Hax, average outside air temperature T
Transmitting means for transmitting average value data such as ox and data of the selected operation mode Mi to the air conditioning and ventilation unit 60.

The air-conditioning and ventilation controller 61 of the air-conditioning and ventilation unit 60 has the following main functions [5] and [6].
Is provided. [5] Control means for controlling the ventilation operation according to the average value data sent from the center remote controller 90.

[6] Control means for changing the control mode of the ventilation operation in accordance with the operation mode Mi sent from the center remote controller 90. Next, the operation of the above configuration will be described.

(1) The operation of the supply unit 50 will be described with reference to the flowchart of FIG. The reception of the operation command and the operation stop command from the center remote controller 90 is monitored (steps 101 and 102), and it is determined whether the operation of the supply unit is stopped (step 103).

When the operation command is received (Step 101)
YES), the detected temperature Taij of the room temperature sensor 55 is read (step 104). Then, data such as the room temperature Taij, the target temperature correction value ΔTsij, and the position correction value αij are transmitted to the center remote controller 90 (step 105).

The data of the operation mode Mi (operation mode of the air conditioning unit 20) and the target temperature Tscij sent from the center remote controller 90 are received (step 106). Difference ΔTij (= Taij−Tsc) between the room temperature Taij detected by the room temperature sensor 55 and the received target temperature Tscij.
ij) is obtained (step 107).

The opening of the VAV damper (variable air volume damper) 53 is controlled based on the received operation mode Mi and the obtained temperature difference ΔTij (step 108).
). By this opening degree control, the supply amount of air-conditioning air to the room to be air-conditioned is adjusted. Note that, instead of controlling the opening of the VAV damper 53, the speed (air volume) of the outlet fan 54 may be controlled.

When a stop command is received (Step 102)
YES), the data regarding the operation stop is stored in the center remote control 90
(Step 109), the VAV damper 53 is fully closed, or the outlet fan 54 is turned off (step 110).

(2) The operation of the indoor unit 30 will be described with reference to the flowchart of FIG. The average room temperature Tami, the average target temperature Tscmi sent from the center remote controller 90,
Data of the operation mode Mi and the operation / stop (the state of each supply unit 50) are received (step 201).
).

No stop command is received (N in step 202).
O) If all the supply units 50 are not stopped (NO in step 203), the average room temperature Tam
The difference ΔTi between i and the average target temperature Tscmi (= Tami-Tsc
mi) is determined (step 204).

The data of the outside air temperature Toi sent from the outdoor unit 40 is received (step 205). Outside air temperature Toi, operation mode Mi, temperature difference ΔTi, each supply unit 50
The number of rotations of the compressor 42 and the number of rotations r i (rps) of the compressor 42 and the indoor fan 32 are determined according to the air conditioning load (step 20).
6).

The data of the determined compressor speed fi (rps) is sent to the outdoor unit 40 together with the data of the operation mode Mi (step 207). The determined indoor fan speed ri
The indoor fan 32 is operated so as to be (rps) (step 208).

The detected humidity Hai of the indoor humidity sensor 35 is read (step 209), and the data of the indoor humidity Hai, the operation / stop, and the outside air temperature Toi are stored in the center remote controller 90.
(Step 210).

When a stop command is received (step 202)
(YES in step 203) or when at least one of the supply units 50 has stopped operating (YES in step 203), the indoor fan 32 is turned off and a stop command is sent to the outdoor unit 40 (step 211).

(3) The operation of the outdoor unit 40 will be described with reference to the flowchart of FIG. When the stop command is not received from the indoor unit 30 (NO in step 301), the data of the compressor rotation speed fi (rps) and the operation mode Mi sent from the indoor unit 30 are received (step 302).

If the compressor speed fi (rps) is zero (step
303 (YES), the compressor 42 and the outdoor fan 43 are each turned off (step 304). Compressor speed f
If i (rps) is zero or more (NO in step 303), the compressor 42
The operation of the outdoor fan 43 is turned on (step 305).

When the operation mode Mi is heating (step 30)
6), a four-way valve (not shown) for switching the flow direction of the refrigerant is turned on to form a heating cycle (step 307).

When the operation mode Mi is cooling (step 30)
(NO at 6), the four-way valve is turned off to form a cooling cycle (step 308). Detection temperature T of outside air temperature sensor 44
oi is read (step 309), and the data is stored in the indoor unit 3
0 (step 310).

When the stop command is received from the indoor unit 30 (YES in step 301), the operation of the compressor 42 and the outdoor fan 43 is turned off (step 311). (4) The operation of the center remote controller 90 will be described with reference to the flowchart of FIG.

When the operation ON is specified in any of the supply units 50 (YES in step 401), the operation / stop, the target temperature correction value ΔTsij, the position correction value αij, and the room temperature sent from the supply unit 50 are performed. Taij
Is received (step 402). Further, data of the outside air temperature Toi and the indoor humidity Hai sent from each air conditioning unit 20 are received (step 403). These received data are stored in the internal memory (step
404).

An average room temperature for each system of the air conditioning unit 20 (average value of each room temperature Taij) is calculated by calculation using each room temperature Taij sent from each supply unit 50.
Tami is calculated (step 405). For example, if there are four supply units 50, the value obtained by dividing the total value of the room temperatures Taij detected by the supply units 50 by the number of supply units “4” is the average room temperature Tam.
i.

Tami = ΣTaij / 4 The operation mode Mi of each air conditioning unit 20 is selected based on the respective conditions (step 406: subroutine a).

The target temperature Tscij of each room to be air-conditioned is determined (step 407: subroutine b).
Average target temperature T for each air conditioning unit 20 system from scij
The scmi is calculated (step 408). For example, if there are four supply units 50, the average target temperature Tscmi is a value obtained by dividing the total value of the target temperatures Tscij in each supply unit 50 by the number of supply units “4”.

Tscmi = ΣTsci / 4 And the average indoor temperature T for each system of the air conditioning unit 20
The average room temperature Tamix of all the rooms is calculated from ami, and the average target temperature Tscmi of each system of the air conditioning unit 20 is calculated.
The average target temperature Tscmix of all rooms is calculated from
409). For example, if there are three air conditioning units 20,
The value obtained by dividing the total value of the three average indoor temperatures Tami by the number of air-conditioning units “3” is the average indoor temperature Tamix of all rooms and the three average target temperatures Tscmi, and the total value is divided by the number of air-conditioning units “3”. The value is the all-room average target temperature Tscmix.

Tamix = ΣTami / 3 Tscmix = ΣTscmi / 3 Further, the average outdoor air temperature Tox and the average indoor humidity Hax are calculated from each outdoor air temperature Toi and each indoor humidity Hai stored in the internal memory (step 410). . That is,
The value obtained by dividing each outside air temperature Toi by the number of operating air-conditioning units is the average outside air temperature Tox, and the value obtained by dividing each indoor humidity Hai by the number of operating air-conditioning units is the average indoor humidity Hax.

Tox = ΣToi / (the number of operating air-conditioning units) Hax = ΣHai / (the number of operating air-conditioning units)
(Step 411).

When the operation off is designated for all the supply units 50 (NO in step 401), an operation stop command is transmitted to each air conditioning unit 20 (step 412). FIG. 7 shows a subroutine a for selecting the operation mode Mi.
(Step 406) is shown.

That is, one of the air conditioning units 20
(I = 1) is specified first (step 501), and it is determined whether the specified air conditioning unit 20 is in the operation ON state (step 502).

If the designated air conditioning unit 20 is in operation (YES in step 502), the air conditioning unit 2
The operation mode Mi (cooling or heating) Mi of 0 is determined from the operation mode setting condition F shown in FIG. 16 using the outside air temperature Toi captured by the air conditioning unit 20 and the average indoor temperature Tami of the system of the air conditioning unit 20 as parameters. (Step 503).

That is, if the average room temperature Tami is less than 23 ° C., the heating mode is set regardless of the outside air temperature Toi. , Average room temperature T
When ami is 28 ° C. or more, a cooling mode or a blowing mode is determined according to the outside air temperature Toi.

If the designated air-conditioning unit 20 has been stopped (NO in step 502), the operation mode before the operation is stopped is maintained as the operation mode Mi of the air-conditioning unit 20 (step 504).

Thus, all the air conditioning units 20 (i =
1 to n) (steps 505 and 506), the operation mode Mi
Is selected. FIG. 8 shows a subroutine b (step 407) for calculating the target temperature Tscij.

That is, one of the indoor units 20
One (i = 1) is specified first (step 601), and one of the supply units 50 (j = 1) in the specified air conditioning unit 20 system is specified (step 602). It is determined whether the designated supply unit 50 is in the operation ON state (step 603).

When the operation of the specified supply unit 50 is stopped (NO in step 603), the room temperature Taij detected in the supply unit 50 is determined as it is as the target temperature Tscij (step 604).

Tscij = Taij If the specified supply unit 50 is on (YES in step 603), the center remote controller 90 is operated.
The target temperature Tscij is determined by the calculation using the reference target temperature Tso preset in the above, the target temperature correction value ΔTsij determined by the supply unit 50, and the position correction value αij determined by the supply unit 50. (Step 605).

Tscij = Tso + ΔTsij + αij Thus, the target temperature Tscij is determined for all the supply units 50 (j = 1 to m) in each system of the air conditioning unit 20 (i = 1 to n) (steps 606, 607, 608, 609).

(5) The operation of the air conditioning and ventilation unit 60 is shown in FIG.
This will be described with reference to the flowchart of FIG. The data of the operation / stop, operation mode Mi, all room average indoor temperature Tamx, all room average target temperature Tscmx, average outside air temperature Tox, and average indoor humidity Hax sent from the center remote controller 90 are received (step 701).

No stop command is received (N in step 702).
O), if all the operation modes Mi of the air-conditioning units 20 in operation except for the air-conditioning unit 20 that is not operating are common cooling or air blowing (YES in step 703), the average room temperature Tamx and the average target in all rooms are obtained. A difference (average temperature difference) ΔTd from the temperature Tscmx is calculated (step 704).

ΔTd = Tamx−Tscmx Then, by comparing ventilation control condition A for cooling / blowing shown in FIG. 11 stored in the internal memory of the air conditioning ventilation controller 61 with the temperature difference ΔTd, the ventilation fan 62 The operation state (off, weak wind, strong wind) is selected (step 705).

That is, when the average room temperature Tamx is higher than the average target temperature Tscmx, for example, when the room is still hot such as at the start of cooling, the amount of outside air introduced into the room is reduced to reduce the air temperature. In order to promote the rise, the operation of the ventilation fan 62 is selected to be turned off. If the average room temperature Tamx is lower than the average target temperature Tscmx, the strong fan operation of the ventilation fan 62 is selected to increase the indoor temperature by increasing the amount of outside air introduced. When the average room temperature Tamx in all rooms is stabilized at the average target temperature Tscmx in all rooms, the ventilation unit 62 is operated in a weak wind to reduce noise.

However, if the operation of the ventilation fan 62 is turned off (YES in step 706), the difference (average temperature difference) Δ between the average room temperature Tamx and the average outside air temperature Tox in all the rooms is Δ.
Te is calculated (step 707).

ΔTe = Tamx−Tox Then, the ventilation fan 62 for the ventilation fan 62 is checked by comparing the ventilation control condition B for cooling / blowing shown in FIG. 12 stored in the internal memory of the air conditioning / ventilation controller 61 with the temperature difference ΔTe. An operation state is selected (step 708).

In other words, if the room is still hot, such as at the start of cooling, the operation is selected to be turned off as described above. However, if the average outside air temperature Tox becomes the average indoor temperature Tamx of all the rooms,
In a lower situation, the outside air can be cooled, so that the weak fan operation or the strong wind operation of the ventilation fan 62 is selected. Since the total heat exchanger has a heat exchange efficiency of about 60%, the remaining 40% of the non-heat exchange action enables external air cooling.

On the other hand, if all the operation modes Mi of the air-conditioning unit 20 in operation except for the air-conditioning unit 20 whose operation is stopped are all common heating (YES in step 709), the average target temperature Tscmx for all rooms and the average A difference (average temperature difference) ΔTd from the room temperature Tamx is calculated (step 710).

ΔTd = Tscmx−Tamx Then, the ventilation control condition C for heating shown in FIG. 13 stored in the internal memory of the air-conditioning ventilation controller 61 and the temperature difference ΔT
By comparing with d, the operation state (off, weak wind, strong wind) of the ventilation fan 62 is selected (step 711).

That is, when the average room temperature Tamx is lower than the average target temperature Tscmx, for example, when the room is still cold, such as at the start of heating, the amount of outside air introduced into the room is reduced to reduce the heating. In order to promote the rise, the operation of the ventilation fan 62 is selected to be turned off. When the average room temperature Tamx exceeds the average target temperature Tscmx, the strong wind operation of the ventilation fan 62 is selected in order to increase the amount of outside air introduced and lower the room temperature. When the average room temperature Tamx in all rooms is stabilized at the average target temperature Tscmx in all rooms, the ventilation unit 62 is operated in a weak wind to reduce noise.

However, if the operation of the ventilation fan 62 is turned off (YES in step 712), the difference (average temperature difference) Δ between the average outside temperature Tox and the average room temperature Tamx in all the rooms is Δ.
Te is calculated (step 713).

ΔTe = Tox−Tamx Then, the ventilation control condition D for heating shown in FIG. 14 stored in the internal memory of the air conditioning and ventilation controller 61 and the temperature difference ΔT
The operation state of the ventilation fan 62 is selected by collation with e (step 714).

That is, if the room is still cold, such as when heating is started, the operation is selected to be turned off as described above. However, if the average outside air temperature Tox becomes the average indoor temperature Tamx of all the rooms,
If the situation is higher, outside air heating can be performed, so that the weak fan operation or the strong wind operation of the ventilation fan 62 is selected. In this case, since the heat exchange efficiency of the total heat exchanger is about 60%, the remaining 40% of the non-heat exchange action enables outside air heating.

If all the operation modes Mi of the operating air-conditioning units 20 except the operation-stopped air-conditioning unit 20 are common dehumidification (YES in step 715), the data is stored in the internal memory of the air-conditioning ventilation controller 61. By comparing the dehumidifying ventilation control condition E in FIG. 15 with the average indoor humidity Hax,
The operation state (off, weak wind, strong wind) of the ventilation fan 62 is selected (step 716).

That is, when the average indoor humidity Hax is still high, such as at the start of dehumidification, the operation of the ventilation fan 62 is selected to reduce the amount of outside air introduced into the room and to promote the dehumidification. You. As the average indoor humidity Hax decreases, the weak wind operation or the strong wind operation of the ventilation fan 62 is selected to increase the amount of outside air introduced.

When the operation state is selected in this way, the operation of the ventilation fan 62 is actually controlled by the selected contents (step 717), and the control state (operation / operation) is selected.
Data representing stop, air flow) is sent to the center remote controller 90 (step 718).

Incidentally, cooling, heating, and dehumidification may be mixed in the operation mode Mi of the operating air conditioning unit 20 except for the air conditioning unit 20 which is not operating (step 715).
NO). In this case, it is determined whether the air conditioning unit 20 having the highest priority among all the air conditioning units 20 is operating (step 719).

If the air conditioning unit 20 having the highest priority is in operation (YES in step 719), the air conditioning unit 2
The ventilation control operation mode Mm where the operation mode Mi selected at 0 is an integrated operation mode is set (step 720).

If the first priority air conditioning unit 20 is not operating (NO in step 719), the operation mode Mi selected by the second priority air conditioning unit 20 is set as the ventilation control operation mode Mm. (Step 721).

Then, the ventilation control operation mode Mm is changed and set as the operation mode Mi of all the operating air-conditioning units 20 (step 722), and the control mode of the ventilation operation is changed according to the operation mode Mi from step 703. Is performed.

When an operation stop command is received from center remote controller 90 (YES in step 702), operation of ventilation fan 62 is stopped (step 723). Data on this stop is sent to the center remote controller 90 (step 724).

(6) As described above, each air conditioning unit 20
Sends the data of the room temperature of each room to be conditioned detected by the supply unit 50 attached to the center remote controller 90, and sets the target temperature of each room to be conditioned by the center remote controller 90;
The average value data of each of the room temperature and the target temperature is obtained by the center remote controller 90, and the average value data is sent to the air conditioning and ventilation unit 60. The air conditioning and ventilation unit 60 controls the ventilation operation according to the average value data. Optimal ventilation according to the environment can be performed without taking measures such as providing a plurality of temperature sensors in the ventilation unit 60. This eliminates unnecessary room temperature changes during ventilation and improves comfort.

The operation mode M of each air conditioning unit 20
i, and also considering the case where the operation mode Mi is different from cooling, heating, and dehumidification, and the control mode of the ventilation operation of the air conditioning and ventilation unit 60 is variably set. Energy loss can be minimized.

In the above embodiment, the difference ΔTd between the average room temperature Tamx and the average target temperature Tscmx in all rooms, and the difference ΔT between the average room temperature Tamx in all rooms and the average outside air temperature Tox.
e is obtained in the air-conditioning and ventilation unit 60.
A configuration in which the value is obtained as 0 and sent to the air conditioning and ventilation unit 60 may be adopted.

The number of air-conditioning units 20 and the number of supply units 50 are not limited, and can be set appropriately according to the number of rooms and the size of the building to be installed. In addition, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the invention.

[0106]

As described above, according to the present invention, the average data of the room temperature and the target temperature of each room to be conditioned is sent from the central controller to the ventilation unit, and the ventilation unit performs the ventilation operation in accordance with the average value data. And the control mode of this ventilation operation is made different according to the operation mode of each air conditioning unit, so that it is possible to perform optimal ventilation according to the environment without providing multiple temperature sensors in the ventilation unit. Thus, it is possible to provide an air-conditioning system device that can eliminate unnecessary room temperature changes during ventilation to improve comfort and minimize energy loss during ventilation.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a control circuit according to one embodiment.

FIG. 2 is an exemplary block diagram for explaining data exchange centered on a center remote controller in the embodiment.

FIG. 3 is a flowchart for explaining the operation of the supply unit in the embodiment.

FIG. 4 is a flowchart for explaining the operation of the indoor unit in the embodiment.

FIG. 5 is a flowchart for explaining the operation of the outdoor unit in the embodiment.

FIG. 6 is a flowchart for explaining the operation of the center remote controller in the embodiment.

FIG. 7 is a flowchart of a subroutine a in FIG. 6;

FIG. 8 is a flowchart of a subroutine b in FIG. 6;

FIG. 9 is a flowchart for explaining the operation of the air conditioning and ventilation unit in the embodiment.

FIG. 10 is a flowchart following FIG. 9;

FIG. 11 is a view showing a ventilation control condition A in the embodiment.

FIG. 12 is a view showing a ventilation control condition B in the embodiment.

FIG. 13 is a view showing a ventilation control condition C in the embodiment.

FIG. 14 is a view showing a ventilation control condition D in the embodiment.

FIG. 15 is a view showing a ventilation control condition E in the embodiment.

FIG. 16 is a view showing operation mode setting conditions in the embodiment.

FIG. 17 is a block diagram showing a conventional device.

[Explanation of symbols]

 Reference Signs List 20 air conditioning unit 30 indoor unit 40 outdoor unit 50 supply unit 60 air conditioning ventilation unit 90 center remote controller (central controller)

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Norihiko Nakatsugawa 336 Tatehara, Fuji City, Shizuoka Prefecture Inside Fuji Plant, Toshiba Corporation (72) Inventor Masahiko Sasaki 336 Tatehara Field, Fuji City, Shizuoka Prefecture Inside Fuji Plant, Toshiba Corporation (72) Inventor Naoto Sato 336 Tatehara, Fuji-shi, Shizuoka Prefecture Inside the Fuji Plant, Toshiba Corporation (72) Inventor Masaki Imamura 3-3-9, Shimbashi, Minato-ku, Tokyo Inside Toshiba AV E Corporation

Claims (7)

[Claims] An indoor unit that sends air for air conditioning to a plurality of air-conditioned rooms, an outdoor unit that forms a refrigeration cycle together with the indoor units, an indoor temperature detection unit provided in each of the air-conditioned rooms, and a target temperature setting unit. A plurality of air conditioning units, a ventilation unit that introduces outside air to ventilate each of the air-conditioned rooms, and an indoor temperature that is connected to each of the air conditioning units and the ventilation unit and detected by each of the indoor temperature detection units. A central controller that calculates the average value of the average temperature and the target temperature set by each of the target temperature setting means, and sends the average value data to the ventilation unit. An air conditioning system device comprising: a control unit that controls a ventilation operation according to average value data. 2. The air conditioning system according to claim 1, wherein an outdoor air temperature detecting means is provided in an outdoor unit of each of the air conditioning units, and wherein the central controller further comprises an external air temperature detected by each of the outdoor air temperature detecting means. An average value of the temperature is obtained, and the average value data is sent to the ventilation unit. 3. The air conditioning system according to claim 1, further comprising: an indoor humidity detecting unit provided in each of the air-conditioned rooms, wherein the central controller further includes the indoor humidity detecting unit. The average value of the indoor humidity detected in step (1) is obtained, and the average value data is sent to the ventilation unit. 4. The air conditioning system according to claim 1, wherein each of the air conditioning units has a selective operation function of cooling and heating, and the central controller further comprises: The operation mode selected by each air conditioning unit is sent to the ventilation unit, and the ventilation unit changes the control mode of the ventilation operation according to the average value data according to the operation mode notified from the central controller. 5. The air conditioning system according to claim 1, wherein each of the air conditioning units has a function of selectively operating cooling and heating, and the central controller further comprises: The operation mode selected by each air conditioning unit is sent to the ventilation unit. When the cooling mode and the heating are mixed in the operation mode of the air conditioning unit, the ventilation unit selects the operation mode selected by the air conditioning unit having a higher priority. The mode is set as the ventilation control operation mode, and the control mode of the ventilation operation according to the average value data is made different depending on the ventilation control operation mode. 6. The air-conditioning system according to claim 1, wherein each of the air-conditioning units has a function of selectively operating cooling and heating, and includes at least three air-conditioning units. Operation can be stopped. The central controller further sends an operation mode selected in each of the air conditioning units to the ventilation unit, wherein the ventilation unit operates in a state in which any of the air conditioning units is stopped and the air conditioning unit in operation is in operation. When cooling and heating are mixed, the operation mode selected by the air conditioning unit with the highest priority among the air conditioning units in operation is set as the ventilation control operation mode, and the ventilation operation according to the average value data is set. The control mode is changed according to the ventilation control operation mode. 7. An indoor unit that sends air for air conditioning to a plurality of air-conditioned rooms, an outdoor unit that forms a refrigeration cycle together with the indoor units, an indoor temperature detecting unit provided in each of the air-conditioned rooms, and a target temperature setting unit. A plurality of air conditioning units, a ventilation unit that introduces outside air to ventilate each of the air-conditioned rooms, and an indoor temperature that is connected to each of the air conditioning units and the ventilation unit and detected by each of the indoor temperature detection units. The average value of the average temperature and the average value of the target temperatures set by the respective target temperature setting means, a difference between the average room temperature and the average target temperature is determined, and a central controller that sends the temperature difference data to the ventilation unit. An air conditioning system device, comprising: a control unit provided in the ventilation unit, for controlling a ventilation operation according to temperature difference data from the central controller.