JPH074720A - Control device for duct type air conditioning system - Google Patents

Abstract

PURPOSE:To improve an unfavorable rising at the time of simultaneous operation for all rooms or plural rooms by a method wherein a priority for operation for each room or per block is previously determined, and a control circuit, which controls a damper based on the priority, is provided. CONSTITUTION:When an all room operation switch 21 is turned on, an automatic control damper 26 which is attached at a branching port 25 of a branching chamber 24 reaching a room with first priority, is controlled to be fully open, and at the same time, an indoor unit is controlled to be under a high load operation. When the room with first priority reaches a set temperature, and a signal is input from a thermostat, a control circuit 22 controls a damper for a room with second priority to be fully open, and controls the damper for the room with first priority to be slightly open. Rooms with third priority and rest are controlled in the same manner. By this method, the rising for a large room with a large load such as living room can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention divides air that has undergone heat exchange in an indoor unit into each room in a branch chamber, guides the branched air into each room via a branch duct, and introduces this into the room. It is applied to a duct type air conditioning system that performs air conditioning by blowing out from an attached outlet.

[0002]

2. Description of the Related Art A conventional duct type air conditioning system is shown in FIG. In this figure, 1 is an indoor unit, 2 is a cooling heat exchanger incorporated in the indoor unit 1, 3 is a heating heat exchanger, 4 is a blower fan, 5 is a ventilation duct, 6 is a suction port, 7 Is a branch chamber, 8 is a branch duct, and 9 is an outlet.

Reference numeral 10 denotes a main controller, and this main controller 10 incorporates various control switches together with an all-room operation switch capable of simultaneously starting all the rooms. When the all-room operation switch is turned on. , All the rooms are controlled to full operation where the dampers at the outlets are fully opened, and when each room reaches the set temperature,
The thermostat works in each room to automatically control the damper at the outlet of each room.

Reference numeral 11 denotes a sub-controller (each room controller) installed in all rooms other than the main controller 10, and the sub-controller 11 is equipped with operation switches capable of operating in each room. ing.

[0005]

However, the duct type air conditioning system described above has the following drawbacks.

A. When all the room operation switches of the main controller 10 are turned on, all the rooms start up at the same time, the load is maximized, and it takes time to control all the rooms to the set temperature.

B. It is necessary to make the indoor unit 1 large so that the operation can be performed on the assumption that all the rooms have a high load.

C. On the sub controller 11 side as well, there are cases where simultaneous or simultaneous operation of several rooms occurs at the same time, and in this case as well, the problems described in a and b above occur.

An object of the present invention is to eliminate the above-mentioned disadvantages a to c in a duct type air conditioning system.

[0010]

The structure of the control device for the duct type air conditioning system according to the present invention is as follows.

By branching the air that has undergone heat exchange in the indoor unit into each room in the branch chamber, guiding the branched air into each room via the branch duct, and blowing this out from the air outlet installed in the room. In a duct type air conditioning system that performs air conditioning, if an automatic control damper is attached to the branch opening of the branch chamber or the air outlet of each room and the operation switch of all rooms or the operation switch of multiple rooms is turned on at the same time, it is set in advance. A control device for a duct type air conditioning system, which is provided with a control circuit for controlling the opening degree of an automatic control damper in each room based on the priority order.

The priority is set in units of rooms or groups, and it is convenient that the order is not fixed and can be changed.

[0013]

When the all-room operation switch is turned on, the control circuit controls the damper of the room having the priority 1 to fully open, and controls the dampers having the priority 2 and below to, for example, slightly open or half open. When the room in the first rank is controlled to the set temperature and a signal is input from the thermostat, the damper in the room in the second rank is controlled to be fully opened, and the damper in the room in the first rank is slightly opened or half-opened. To control. The same control is applied to the third and lower ranks. When the number of rooms is large, the priorities may be determined for each group by grouping the rooms in a similar environment. Further, the order does not necessarily have to be determined for each room, and the order may be such that the first place is the first room, the second place is the third room, and the third place is the first room.

[0014]

FIG. 1 is a front view of a main controller incorporating a control function according to the present invention. The main controller 20 has an all-room operation switch 21, a priority control circuit 22, and a priority change switch 23, and performs the following control. The description of the other functions of the main controller 20 will be omitted.

When the all-room operation switch 21 is turned on, the automatic control damper 26 attached to the branch port 25 of the branch chamber 24 leading to the room with the first priority (usually the living room to which the main controller 20 is attached).
Is fully opened (FIG. 2), and at the same time, the indoor unit is controlled for high load operation. Room number 1 is the set temperature,
When a signal is input from the thermo, the control circuit 22 sets the rank 2
The damper in the No. 1 room is controlled to be fully opened, and the damper in the No. 1 room is controlled to be slightly opened (Fig. 3). The same control is performed for the third rank and below.

4 to 6 are examples of the above control during cooling, and FIG. 4 is an example of change in room temperature during control of the first rank,
FIG. 5 shows an example of a change in room temperature during control when shifting to rank 2, and FIG. 6 shows an example of a change in room temperature during control when shifting to rank 3. In addition, when performing the fully open cooling operation for the room with the highest priority, the dampers on the other rooms are controlled to be half-opened or slightly open, so that weak cooling is performed in this room as well, Room temperature gradually decreases or equilibrates at a certain point. FIG. 7 shows an example of conventional simultaneous operation in all rooms, in which the room temperature in all rooms gradually approaches the set temperature.

The embodiment is an example of simultaneous operation in all rooms.
For example, when the operation switches are turned on at the same time in the rooms of the second, fourth, and seventh priorities, the second is set as the first priority. Further, instead of each room, a room having a relatively close environment, for example, the size of the room, north facing and south facing may be grouped in units of a plurality of rooms and the priority order may be determined for each group.

[0018]

As described above, according to the present invention, the air conditioning is performed by prioritizing the air conditioning when all the rooms or a plurality of rooms are operated at the same time.

A. You can improve the start-up of a large and heavy room like a living room.

B. Compared with the conventional method in which a high load start-up is performed in all rooms, the capacities of the indoor unit and the outdoor unit can be reduced, so that the indoor and outdoor units can be downsized and the initial cost can be reduced.

C. The above effects a and b are particularly effective in the case of a highly airtight and highly adiabatic house with a small steady-state load.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a main controller embodying the present invention.

FIG. 2 is an explanatory view of fully opening the damper.

FIG. 3 is an explanatory diagram of damper slight opening.

FIG. 4 is an explanatory diagram of a temperature control situation of a room having the first rank.

FIG. 5 is an explanatory diagram of the temperature control status of the room of the second rank.

FIG. 6 is an explanatory view of the temperature control situation of the room of the third rank.

FIG. 7 is an explanatory diagram of the temperature control status of all rooms at the time of simultaneous startup of all rooms.

FIG. 8 is an explanatory diagram of a duct type air conditioning system.

[Explanation of symbols]

 20 Main Controller 21 All Room Operation Switch 22 Control Circuit 23 Order Change Switch 24 Branch Chamber 25 Branch Port 26 Damper

Claims (4)

[Claims] 1. The air that has undergone heat exchange in an indoor unit is branched into each room in a branch chamber, this branched air is guided into each room via a branch duct, and this is blown out from a blowout port installed in the room. In a duct type air conditioning system that performs air conditioning by setting the above, if an automatic control damper is attached to the branch opening of the branch chamber or the outlet of each room and the operation switch is turned on in all rooms or at the same time in multiple rooms, it is set in advance. A control device for a duct type air conditioning system, which is provided with a control circuit for controlling the opening degree of an automatic control damper in each room based on the determined priority order. 2. The control device for a duct type air conditioning system according to claim 1, wherein a plurality of rooms are grouped and priority is determined for each group. 3. The control device for a duct type air conditioning system according to claim 1, wherein the priority order is configured to be freely changeable. 4. The control device for the duct type air conditioning system according to claim 1, 2 or 3, wherein a priority changing switch is incorporated in the main controller.