JPH01263450A - Device and method for controlling air conditioner - Google Patents

Abstract

PURPOSE:To simplify a controlling system and to enable an easy accommodation to be attained for a variation of zone by a method wherein a plurality of indoor units are connected to a main controller to which a host controller is connected and then the indoor units are controlled with control signals of both controllers. CONSTITUTION:A memory means 62a for storing a unit No. of each of indoor units B, B... is provided. a unit registering means 63b is provided for defining a plurality of zones Z, Z... and capable of writing the unit No. for every zones Z, Z.... In addition, representative indoor units B, B... are defined for every zones Z, Z... and a representative registering means 63c capable of writing the unit No. for every zones Z, Z.... A zone controlling means 61a may control other indoor units B, B.... for every zones Z, Z... from data of the representative indoor unite B, B... and at the same time, a control signal is communicated between the representative indoor units B, B..., a main controller 6 and a host controller 5.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a control device and control method for a multi-type air conditioner, and particularly relates to group control measures.

(Prior Art) Generally, in a multi-type air conditioner equipped with a plurality of indoor units, there is one in which each indoor unit is divided into zones and controlled. For example, JP-A-5
As disclosed in Publication No. 9-15742, a plurality of main controllers are connected to a host controller, and a plurality of indoor units, etc. are connected to the main controller, and each main controller is connected to the host controller. In addition to controlling the controller, each main controller also controls indoor units and the like.

On the other hand, in recent years, when controlling indoor units, the amount of control has been increasing in order to improve comfort, etc., and it has become difficult to control multiple indoor units separately. Therefore, as shown in Fig. 9, a plurality of indoor units (a), (a) are installed on one floor.

... (9 units in the drawing) are installed, it is divided into multiple zones (Z), (Z), ... (4 in the drawing) corresponding to the partition (6), and each zone (Z) , (Z).

A representative indoor unit (al), (al),... is determined for each... Then, each representative indoor unit (a
The main controller, that is, the DDC (c), which is a transmission conversion device, is connected to the main controller, that is, the DDC (c), which is a transmission conversion device, and the DDC (c) is connected to the host controller (d). ).

(2) Other indoor units (a), (a).

・ is connected to the representative indoor unit (al.), (al), ... of each zone (2), (2), ...,
The representative indoor unit (a1), (a.1),
・Each zone (2), (2),... based on the data of
・ Each indoor unit (a), (a), . . . controls other indoor units (a), (a), . . . , and a plurality of indoor units (a), (a), . . . are group-controlled.

In addition, as shown in Fig. 10, if one DDC (C) is used, the representative indoor units (al), (al), etc. are connected to the DDC (C), and the representative indoor units A remote control switch (e) is connected to the units (al.), (al), . . . for group control of each zone (2), (2), .

(Problem to be Solved by the Invention) In the above-mentioned control device for the air conditioner, conventionally, the DDC (c) is connected to the host controller (cl) and the representative indoor units (al), (al.), etc. In the case shown in Figure 9, the DDC (
c) becomes necessary and the partition (b) is changed from Fig. 9 to Fig. 11, new representative indoor units h(al), (al), ・ are defined, and DDC (c
) and each zone (2).

(2) Other indoor units (a), (a).

There was a problem that I had to change the wiring between...

In addition, in the case shown in Fig. 10, although there is only one DDC (C), if the partition (b) is changed as shown in Fig. 12, a new representative will be added as in the case of Fig. 9. Indoor unit (al), (al).

..., DDC (c) and other indoor units (a)
, (a), . . . had to be changed. Furthermore, even the wiring of the remote control switch (e) had to be changed, and on top of that,
There was a problem in that the address for the remote control switch had to be changed to the address for the DDC of the indoor units (a), (a), . . .

The present invention has been made in view of the above problems, and has a main controller such as a DDC equipped with a writable registration means and a grouping function, thereby simplifying the control system and making it easy to change zones. The purpose is to be able to respond to

(Means and operations for solving the problem) In order to achieve the above object, the invention according to claim (1) first provides a host controller (314) as shown in FIG.
5) is connected to the main controller (6) and multiple indoor units (B).

(B), ... are connected to the indoor unit (B).

(B), ... for both the above controllers (5), (6)
The present invention is based on a control device for an air conditioner that is controlled by a control signal.

and each predetermined indoor unit (B),
(B) Storage means for storing unit numbers of...
62a) is provided. Furthermore, each of the above indoor units (B), (B),... is placed in a plurality of zones (ZL (
Z), ...・The indoor units (B), (B
),... unit numbers for each zone (Z), (Z
), ... Unit registration means (63b) that can be freely written
is provided. Furthermore, each of the above zones (ZL
Representative indoor unit (B), (B) for each (Z),...
,..., and the corresponding representative indoor unit (B), (B)
,... unit number for each zone (Z), (Z),...
・A writable representative registration means (63c) is provided for each. In addition, each indoor unit (B),
(B).

An input means (74) for inputting unit numbers of... is provided. Moreover, the above representative indoor unit (B)
, (B), each zone (z) based on the data of...
, (Z); ......for each other indoor unit (B), (
B),..., and also controls the representative indoor unit (B).
), (B)..., and the above main controller (6)
and zone control means (61a) for transmitting and receiving control signals to and from the host controller (5).

In addition, the measures taken by the invention according to claim (2) are as follows:
Each predetermined indoor unit (B), (B),...
The unit number of . is stored in the storage means (62'a). And each of the above indoor units (B), (B),
... into a plurality of zones (Z), (Z), ...., and enter the unit numbers of the indoor units (B),,' (B), ... into each zone (Z) by input means (74).
, (Z), ..., in the unit registration means (63b), and the representative indoor unit (B) for each zone (Z), (Z), ..., (B)=9-=9-1 ...and the representative indoor unit (B), (B)
.

The unit number of... is entered into the representative registration means (
63c). After that, the above zones (Z), (Z)
,... When changing the indoor unit (B) for each zone (Z), (Z),..., the above input means (74) is used.
, (B)... unit registration means (6
3b), and also rewrites the unit numbers of the representative indoor units l-(B), (B),... into the representative registration means (63c), and the zone control means (61a) B),
(B), ... and transmitting and receiving control signals between the main controller (6) and the host controller (5), and the representative indoor unit (B).

(B) Each zone (2) based on the data of...

(2),..., the other indoor units (B),'(B).

It is configured to control...

This allows the main controller (6), for example, the DDC, which is a transmission change device, to control multiple indoor units (B
), (B),... in the zone (Z).

Group control is performed for each (Z), .

(Effect of the invention) Therefore, according to the inventions of claims (1) and (2),
Main controller (6) can control multiple indoor units) (
B), (B), ... are zones (Z), (Z).

It is possible to perform group control for each zone, and when changing the zone (Z), (Z), …, the zone (
Indoor unit (B) divided into Z), (Z),...
), (B), ... and representative indoor units (B) (B
), . . . It is possible to respond to zone changes by simply changing the registration. As a result, it is possible to reduce the number of main controllers, and it is also possible to eliminate the need to change wiring when changing zones, so the control system can be simplified and costs can be reduced. Each indoor unit (B), (B), . . . can be monitored and controlled individually and for each zone (Z), (Z), .

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 2 shows the refrigerant piping system of the multi-type air conditioner (1) according to the invention of claims (1) and (2).
For example, A) is an outdoor unit installed on the roof of a high-rise building, (B) is an indoor unit placed inside a high-rise building, and multiple indoor units (B), (B),...
and are connected in parallel to the outdoor unit (A). Inside the outdoor unit h (A), there is a compressor (11),
An oil separator (12) that separates oil from the gas discharged from the compressor (1), and a four-way switch that switches as shown in the solid line in the figure during heating operation and as shown in the broken line in the figure during cooling operation. The outdoor heat exchanger (1) is equipped with a valve (13) and a fan (1, 4a) and serves as a condenser during cooling operation and as an evaporator during heating operation.
4), a supercooling coil (15), an outdoor electric expansion valve (]6) that adjusts the refrigerant flow rate during cooling operation and throttles the refrigerant during heating operation, and a receiver (17) that stores the liquefied refrigerant. and an accumulator (18) are built in as main actuators, and each of the actuators (11) to (18) is connected to each other through a refrigerant pipe (2) so that refrigerant can flow therethrough. The compressor (11) has an output frequency in the range of 30 to 70 Hz], a first compressor (11a) whose capacity is adjusted by an inverter (3a) that is variably switched for each OHZ, and a pilot pressure The unloader (3b) that operates at high and low levels allows the capacity to be fully loaded (100%) and unloaded (50%).
The second compressor (1lb) is regulated in stages and the check valve (
2a) are connected in parallel.

On the other hand, the above-mentioned indoor units (B), (B), ... have the same configuration, and each has a fan (4a) and an indoor heat exchanger (4a) that serves as an evaporator during cooling operation and a condenser during heating operation.
4), (4),... and the indoor heat exchanger (
4), (4), refrigerant branch pipe (21) connected to...
, (21), . . . include an indoor electric expansion valve (41), which is one of the actuators and which adjusts the refrigerant flow rate during heating operation and throttles the refrigerant during cooling operation.
1),... are interposed, and the refrigerant branch pipe (21)
, (21), ... are collected in the connecting pipe (22),
It is connected to the refrigerant pipe (2) of the outdoor unit (A) via a manual shutoff valve (22a). In addition, air conditioners (
1) is equipped with many sensors, (THI)
is placed at the air suction port of each indoor heat exchanger (4), and the temperature sensor (TH2) and (T
H3) is a temperature sensor that detects the temperature of the liquid side and gas side pipes of each indoor heat exchanger (4), (TH4) is a temperature sensor that detects the temperature of the discharge pipe of the compressor (11), and (T
H5) is a temperature sensor that detects the evaporation temperature of the outdoor heat exchanger (14) during heating operation, (TH6) is a temperature sensor that detects the temperature of the intake gas of the compressor (11), and (TH7) is the outdoor heat exchanger (14) Temperature sensor (PS) that detects the outside air temperature in the vicinity is a pressure sensor that detects the discharge gas pressure during heating operation and the intake gas pressure during cooling operation.

In addition, in Fig. 2, various auxiliary actuators are provided in addition to the above-mentioned main actuators.
3a) is the bypass circuit (2) of the second compressor (1,], b)
3), which is an unloader solenoid valve that is "open" when the second compressor (1lb) is stopped and in an unloaded state, and "closed" when it is fully loaded, and is connected to the bypass circuit (23). A capillary tube (23b) is interposed therebetween. (24a) is the discharge side refrigerant pipe (2)
The pressure-equalizing hot gas bypass circuit (24) connects the refrigerant pipe (2) to the suction side. This is a working hot gas solenoid valve. Further, (25) is a bypass circuit for heating overload control, and the bypass circuit (25) is a heating overload control bypass circuit.
5) includes an auxiliary capacitor (25a) and a first check valve (
25b) and a high pressure control valve (25c) that opens when the refrigerant pressure is high.
and a second check valve (25d) are sequentially connected in series, and a part of the circuit includes a liquid seal prevention bypass circuit (26), (27) for preventing liquid seal when the operation is stopped. A branch connection is made via a check valve (26a) and a capillary tube (27a).

Furthermore, (28) is a liquid injection bypass circuit for adjusting the supermaturity degree of intake gas during cooling/heating operation, and the liquid injection bypass circuit (
28) includes an injection solenoid valve (28a) that opens and closes in conjunction with the on/off of the compressor (11), and an injection solenoid valve (28a) that opens and closes in accordance with the degree of superheating of the intake gas detected by the temperature-sensitive tube (2b). A regulated automatic expansion valve (28b) is provided.

In Fig. 2, (HPS) is a high pressure switch for protecting the compressor, and (sp) is a service port.

Figure 3 shows each of the above indoor units (B) and (B).

(5) is a host controller, and each indoor unit (B), (B).

It monitors and controls the host controller (5).
A plurality of D'DCs (6), (6), ... (direct digital controllers), which are the main controllers of the transmission conversion equipment, are connected by wiring, and each D'DC is
A maximum of 16 indoor units (B), (B), . . . are wired to the DCs (6), (6), . . . . For example, as shown in Figure 5, there are nine indoor units (B) on one floor (F) in a building.
B), ... are installed, and the nine indoor units (B),
(B), . . . are connected to one DDC (6).

The above DDC (6) includes each indoor unit (B),
(B).

...・ is divided into zones (Z), (Z), ...・ and group controlled. In other words, the above floor (
When F) is partitioned by partitions (M), each of the indoor units (B) corresponds to the partition (M).

(B), ... are divided into four zones (Z), (Z), and are controlled in groups.

The DDC (6) has a CPU (6) as shown in FIG.
ROM (62) and RAM (63) are connected to The pocket controller (7) is configured to be detachably connected via the section (66). The pocket controller (7) has a CPU (
ROM (72) and RAM (73) are connected to 71), and -17= key input unit (74) and display unit (75).
is connected to the DDC via the transmission section (76).
(6).

As shown in Fig. 5, the nine indoor units (B), (B), ... are assigned unit numbers (BO) to (B8) corresponding to their set positions. DD
C(6) has the above unit numbers (BO) to (B8
) is provided in the ROM (62), and a number storage unit (62a) is provided as a storage means for storing the zone registration unit (62a).
3a), unit registration section (63b), and representative registration section (63
c) is provided in the RAM (63). The zone registration unit (63a), as shown in FIG.
Number of indoor units (B) that can be connected to (16 units)
16 zone numbers (Zl) to (Z 16) corresponding to
is registered. In addition, the unit registration section (63b
), as shown in Figure 6, each zone (Z), (Z
), ...・ Indoor unit (B) (B), ...・
unit numbers (BO) to (B8) or each zone (Z
), (Z), ....For example, in the first zone (Zl), unit numbers (BO) to (B2) or in the second zone (
22) has unit numbers (B3) and (B4),
The third zone (Z3) has a unit number (B5),
(B6), but the fourth zone (Z4) has the unit number (
B7) and (B8) are registered respectively. Furthermore, the representative registration means (63c) registers each zone (Z).
, (Z), ・For each corresponding zone (Z), (Z
),...indoor units (B), (B).

…・Representative indoor unit l-(B), (
The unit numbers (BO) to (B8) of B), ... are configured as a representative registration means that can be freely written. For example, the unit number 6
As shown in the figure, the first registered indoor unit is
), (B), unit number (B O),
(B3), (B5), and (B7) are registered as representative indoor units (B), (B), and so on. Then, the unit number (BO) is written in the unit registration section (63b) and representative registration section (63c).
In addition to (B8), the set temperature is input from the key input section (74) of the pocket controller (7).

On the other hand, the CPU (61) in the DDC (6) has a group control means for controlling each of the indoor units l-(B), (B), · for each zone (Z), (Z),... A group control section (61,a) is configured, and the group control section (61a) sends and receives control signals between the host controller (5) and the DDC (6), and also sends and receives control signals between the representative indoor unit (B ), (B), ... and D
The representative indoor unit (B) sends and receives control signals to and from the DC (6).

(B) Representative indoor unit (B) by controlling...

(B), . . . , other indoor units l-(B), (B), . . . in each zone (Z), (Z), . . . are controlled accordingly.

Next, the operation of the air conditioner (1) will be explained.

First, during the cooling/heating operation of the air conditioner (1), each indoor unit (B), (B), .

(4) Refrigerant flow rate or throttle and indoor fan (4a
), (4a), . . . air volume is controlled. - The outdoor unit (A) is the same as each indoor unit h (B), (B)
The refrigerant flow rate of the outdoor heat exchanger (14) and the capacity of the compressor (11) are controlled according to the operating conditions of the outdoor heat exchanger (14) and the capacity of the compressor (11), thereby performing appropriate operation according to the air conditioning load in each room.

On the other hand, as shown in Figure 5, one floor (F) is divided into partitions (
When partitioned into four rooms by M), the partition (
Nine indoor units (B), (B), ... are divided into four zones (Z), (Z), ... corresponding to M).

Then, as shown in Figure 6, each zone (Z), (
Z), ...Correspondingly, the indoor units I-(B), (B) are stored in the unit registration section (63b).

The unit numbers (BO) to (B8) of ... are written in from the key manual section (74), and each zone (Z).

Representative indoor units (B), (B) of (Z),....

Unit numbers (BO), (B3), (B
5), (B7) is written into the representative registration section (63c) from the key human power section -21= (74). In other words, the first zone (
In Zl), the unit number (BO) is the representative indoor unit (B), and two other indoor units (B),
Write the unit numbers (Bl) and (B2) of (B), and in the second zone (22), set the unit number (B3) as the representative indoor unit (B), and write one other indoor unit (B). Write the unit number (B4), and in the third zone (Z3), write the unit number (B4).
5) as the representative indoor unit (B), write the unit number (B6) of the indoor unit (B) on the bench, and write the unit number (B7) in the fourth zone (Z4).
is set as the representative indoor unit (B), and the unit number (B8) of one other indoor unit (B) is written.

The group control unit (61a) then sends an operation stop signal, normal/abnormal signal, representative indoor unit l-(B), (B), . . . between the host controller (5) and the DDC (6).
・While transmitting and receiving detected indoor temperature signals, set temperature signals, etc., each zone (Z) is based on the data of each representative indoor unit (B), (B), ....

(Z),..., other indoor units (B), ゛ (B)
.

...is controlled.

On the other hand, when the partition (M) is changed from FIG. 5 to that shown in FIG. 7, the indoor units (B) located in each room
, (B),... will change, and the zone (Z)
, (Z),...indoor unit (B).

(B), ... will be changed. Then, the unit number (BO) of the indoor unit (B), (B), ... registered for each zone (Z), (Z), ...
~(B8) will be rewritten.

That is, as shown in FIG. 8, the first zone (Zl) is assigned the unit number (BO) of the representative indoor unit (B) and two other indoor units (B) by the key personnel department (74).
(B) unit number (B3).

(B4), and in the second zone (Z2), the unit number (B1) of the representative indoor unit (B) and two other indoor units (B), the unit number (B5) of (B),
(B6), and since there is only one unit in the third zone (Z3), enter the unit pick-up (B2) of the representative indoor unit (B).
In the fourth zone (Z4), the unit number (B7) of the representative indoor unit (B) and the unit number /<(B8) of one other indoor unit (B) are rewritten.

Thereafter, the group control unit (61a) will perform group control on other indoor units (B), (B), . . . based on the data of each representative indoor unit (B), (B), .

In addition, the data of the representative indoor units (B), (B), etc. are displayed on the display section (75) of the pocket controller (7).
On the other hand, switching between air conditioning and heating operation is performed using the key human power section (
74).

Therefore, one DDC (6) can be used to connect multiple indoor units (B), (B), ... to multiple zones (Z),
(Z),... can be controlled individually, and the partitions (M) allow zones (Z), (Z).

When ... is changed, the unit number (BO) ~ (B8
) can change the representative indoor unit (B), etc. Therefore, the entire system can be simplified, the cost can be reduced, and zone changes can be accommodated without changing the wiring.

Further, each indoor unit (B), (B), . . . can be monitored and controlled individually and for each zone (Z), (Z), .

In addition, in the above embodiment, the key manual section (74) and the display section (75) were provided in the pocket controller (7).
It may also be provided in the DDC (6).

Further, the main controller is not limited to the DDC (6).

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of the invention according to claims (1) and (2). 2 to 8 show embodiments of the invention according to claims (1) and (2), in which FIG. 2 is a refrigerant circuit diagram of the air conditioner, FIG. 3 is a control system diagram thereof, and FIG. is a circuit block diagram of a DDC and a pocket controller. Figure 5 is a diagram of the indoor unit control system, Figure 6 is a diagram showing the registered contents of the DDC, Figure 7 is a diagram of the indoor unit control system after changing the zone, and Figure 8 is the registration of the DDC after changing the zone. It is a diagram showing the contents. 9 and 10 are control system diagrams of an indoor unit showing a conventional example,
FIGS. 11 and 12 are diagrams of the conventional control system after the zone is changed. A...-Outdoor unit, B...-Indoor unit, F...-Floor, M...-Partition, 1...-Air conditioner, 4...-Indoor heat exchanger, 5...-Host controller, 6...-DDC. 7...Pocket controller, 11...Compressor, 14...
-Outdoor heat exchanger, 61...CPU, 61a...Group control unit, 62a...Number storage unit, 63a...Zone registration unit, 63b...Unit registration unit, 63c...Group control unit
Two

Claims (2)

[Claims] (1) Multiple indoor units (B), (B) are connected to the main controller (6) to which the host controller (5) is connected.
),... are connected, and the indoor units (B), (B),...
In the control device for an air conditioner, the controllers (5) and (6) control the indoor units (B), (B), and
A storage means (62a) for storing unit numbers of...;
Each of the above indoor units (B) (B), ... can be connected to multiple zones (
Z), (Z), ... and the indoor units (B), (
B), unit number of each zone (Z), (Z),
A unit registration means (63b) that can be freely written for each zone, and a representative indoor unit (63b) for each zone (Z), (Z), ...
B), (B)... are determined and the representative indoor units (B), (
B), unit number of each zone (Z), (Z),
A representative registration means (63c) that can write freely for each unit, the unit registration means (63b), and a representative registration means (63c).
input means (74) for inputting the unit number of each indoor unit (B), (B), ..., and each zone (Z) based on the data of the representative indoor units (B), (B), ...
, (Z),... for each other indoor unit (B), (B),...
In addition to controlling the representative indoor units (B), (B)
,..., and zone control means (61a) for transmitting and receiving control signals between the main controller (6) and the host controller (5). (2) Each predetermined indoor unit (B), (B),
... is stored in the storage means (62a),
Each indoor unit (B), (B), ... is divided into a plurality of zones (Z), (Z), ..., and the indoor unit (B),
(B),... by the input means (74), the unit registration means (
63b), and each zone (Z), (Z) above.
,... are determined for each zone (Z), (
Z), is written in the representative registration means (63c) for each zone (Z), while writing in the input means (63c) when changing the zone (Z), (Z),...
74), the unit numbers of the indoor units (B), (B)... are rewritten in the unit registration means (63b) for each zone (Z), (Z),..., and the representative indoor units (B), ( B) Rewrite the unit numbers of... into the representative registration means (63c) and zone control means (61a).
transmits and receives control signals between each representative indoor unit (B), (B), ... and the main controller (6) and host controller (5), and
),... based on the data of each zone (Z), (Z),...
The method for controlling an air conditioner according to claim 1, characterized in that the other indoor units (B), (B), . . . are controlled for each indoor unit.