JP2991360B2 - Air conditioning system - Google Patents

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, and more particularly to an air conditioning system for simultaneously air-conditioning a plurality of rooms in a house and using a VAV (variable air volume) unit.

[0002]

2. Description of the Related Art In this type of conventional air conditioning system,
Distributing at least outside air heated or cooled to a certain temperature by an air conditioner to each of a plurality of chambers via an air supply duct, and adjusting an air supply amount by a VAV unit provided in association with each room. The temperature is controlled individually for each room.

[0003]

In a conventional air conditioning system, the temperature of each room is controlled by adjusting the amount of air supplied by a VAV unit. However, there is a problem that the air supply amount is small and the outside air required for ventilation cannot be sufficiently secured.

[0004] In addition, when the amount of supplied air is small, the movement of indoor air becomes poor, so that there is a problem that the indoor air conditioning environment becomes uneven. Therefore, the main purpose of this invention is to
An object of the present invention is to provide an air conditioning system that can improve the comfort of an indoor air conditioning environment.

[0005]

According to the present invention, a priority room is provided.
An air conditioning system for simultaneously air-conditioning a plurality of rooms including at least one candidate room that can be designated by means of room thermometer means provided in the plurality of rooms, and heating or cooling at least outside air to supply to each of the plurality of rooms Air conditioner, a plurality of VAV units provided in association with each of the plurality of rooms and individually controlling the amount of air supplied to each of the plurality of rooms, and priority switch means provided in the candidate room. Priority switch means priority to the last candidate room operated
And the chamber to control the VAV unit provided air charge to the priority chamber in connection with the priority chamber such that the maximum air charge, and the air conditioner in accordance with a signal from the room thermo means preferential chamber This is an air conditioning system that controls the air conditioning temperature of the air conditioner.

[0006]

[ Operation ] Specifying a priority room by operating the priority switch means
Then , the air supply amount to the priority room is set to the maximum air supply amount, and the air conditioning temperature of the air conditioner is controlled so that the temperature of the priority room becomes a predetermined constant temperature. On the other hand, the temperature of the rooms other than the priority room is controlled by controlling the air supply amount by the VAV unit.

In some cases, the temperature of the rooms other than the priority room may not be satisfied to some extent or the required outside air volume may not be secured. However, in the case of a house, it is difficult for a large number of people to enter all the rooms at one time. There is no particular problem. Further, when the priority switch means is not operated, each room is under normal VAV control, and the supply air temperature of the air conditioner is controlled to be constant.

[0008]

According to the present invention, sufficient outside air can be supplied to the priority room. Moreover, the unevenness of the air conditioning environment of the priority room can be eliminated. Therefore, the comfort of the indoor air-conditioning environment can be improved as a whole. The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

[0009]

FIG. 1 shows an air conditioning system 1 according to this embodiment.
0 is a plurality (five in this embodiment) of rooms 12a in the house
To 12e at the same time, and includes an air conditioner 16 controlled by the controller 14. The air conditioner 16 includes a casing 18. Casing 18
The partition wall 20 is formed in the inside of the inside, and the total heat exchanger 22 is provided in the partition wall 20. Thereby the casing 18
, A first chamber 24, a second chamber 26, a third chamber 28, and a fourth chamber 30 are formed. An opening 32 is formed in the partition wall 20, and the first chamber 24 and the second chamber 26 communicate with each other through the opening 32.

A return air port 34 is formed on the right side of the first chamber 24, and an air filter 36, a temperature sensor 38, a humidity sensor 40, and a return air fan 42 are provided inside the first chamber 24 from the upstream side. They are arranged in order. An air supply port 44 is formed on the right side surface of the second chamber 26, and an air supply fan 46, a cooling coil 48, and a heating coil 5 are provided inside the second chamber 26 from the upstream side.
0, a humidifier 52 and a temperature sensor 54 are arranged in this order. An outside air port 56 and an exhaust port 58 are formed on the left side surfaces of the third chamber 28 and the fourth chamber 30, respectively. An air filter 60 is provided inside the third chamber 28 near the inlet of the total heat exchanger 22. Be placed.

The cooling coil 4 is provided outside the casing 18.
8 and electric valves 62 and 64 for operating the heating coil 50, an electromagnetic valve 66 for operating the humidifier 52, inverters 68 and 70 for controlling the rotation speeds of the return air fan 42 and the air supply fan 46, and the like. The humidity sensor 40 and the temperature sensors 38 and 54 are connected to an AI (analog input) terminal 72 of the controller 14, and the inverters 68 and 70 and the electric valves 62 and 64 are connected to an AO (analog output) terminal 74. , electromagnetic valve 66 is D O (digital output)
Is connected to the terminal 7 8, inverters 68 and 70 are further connected to the D I (digital in-put) terminal 7 6.

On the other hand, each room 12a to 12e in the house has
An air supply port 80 and a return air port 82 are formed, and the air supply port 80 and the air supply port 44 of the air conditioner 16 are communicated via an air supply duct 84. Breath 34
Are communicated with each other through a corridor, a space above the ceiling, and the like (not shown). In addition, the air supply duct 84 includes each of the chambers 12a to 12e.
In connection with the V including the damper 86 and the wind speed sensor 88
An AV (variable air volume) unit 90 is provided, and a room thermo 92 provided in each of the rooms 12a to 12e is connected to the VAV unit 90. A room thermometer 92a for a priority room as shown in FIG. 2 is used for a candidate room that may be selected as a priority room, and a room thermo 92b for a general room as shown in FIG. 3 is used for other rooms. You. The priority room room thermo 92a is provided with a priority switch 100 for executing a priority operation in addition to the start switch 94, the temperature setting switch 96, the temperature display section 98, and the like. All the rooms 12a to 12e have a room thermostat 9 for the priority room.
2a may be provided so that any one of the rooms 12a to 12e can be selected as a priority room. When the room thermostat 92a for a priority room is provided in a plurality of rooms, the room in which the priority switch 100 was operated last becomes the priority room. Each VAV unit 90 is connected to an SI (serial interface) terminal 104 of the controller 14 through an operation panel 102.
Connected to.

In operation, for example, when the heating operation is selected by the operation panel 102, the electric valve 62 of the cooling coil 48 is closed and the electric valve 64 of the heating coil 50 is opened. Further, the electromagnetic valve 66 of the humidifier 52 is opened as required. And return air fan 42
And the air supply fan 46 is driven at a predetermined rotation speed. When the return air fan 42 and the supply air fan 46 are driven, the return air sent from the respective return air ports 84 of the chambers 12 a to 12 e is taken into the first chamber 24 of the air conditioner 16 through the return air port 34. . The return air taken into the first chamber 24 is dust-removed through the air filter 36, part of the air flows into the fourth chamber 30 through the total heat exchanger 22, and the rest flows into the second chamber 26 through the opening 32. I do. The return air flowing into the fourth chamber 30 is discharged outside through the exhaust port 58. In addition, outside air from the outside is taken into the third chamber 28 through the outside air port 56, and after dust is removed through the air filter 60, the air flows into the second chamber 26 through the total heat exchanger 22, and returns through the opening 32. Mixed with qi. The mixture of the outside air and the return air is heated through the heating coil 50, humidified as necessary through the humidifier 52, and then supplied from the air supply port 44 to the respective chambers 12 a to 12 e through the air supply duct 84.

When the priority room is not designated , that is, when the priority switch 100 of any of the room thermostats 92a for the priority room is not operated, the temperature of the air supplied from the air supply port 44 becomes a predetermined constant value. The electric valve 64 is adjusted, and the temperature of each chamber is controlled by adjusting the amount of air supplied to each chamber by the VAV unit 90. For example, when many people gather in the room 12a in which the room thermometer 92a for the priority room is provided, the heating load is reduced, so that the damper 86 is operated in the closing direction in the VAV unit 90 and is supplied to the room 12a. The charge is reduced.
Therefore, the indoor air-conditioning environment deteriorates due to the inability to secure the outside air required for ventilation. In such a case, the priority switch 100 of the room thermo 92a for the priority room is used.
Is operated, the room 12a is selected as a priority room. When the room 12a is designated as the priority room, the priority room 1
The damper 86 of the VAV unit 90 provided in association with 2a is fully opened, and the amount of air supplied to the priority chamber 12a is set to the maximum amount of air. Then, the electric valve 64 is opened and closed based on a signal from the priority room room thermo 92a of the priority room 12a, and the air conditioning temperature is controlled so that the room temperature of the priority room 12a becomes a predetermined constant value. At this time, in the rooms 12b to 12e other than the priority room 12a, each VA
The temperature is controlled by adjusting the air supply amount in the V unit 90.

Similarly, when the cooling operation is selected by the operation panel 94, the room designated as the priority room can be preferentially air-conditioned. According to this embodiment, sufficient air can be supplied to the priority room, so that the outside air necessary for ventilation of the priority room can be reliably secured, and the unevenness of the air conditioning environment of the priority room can be eliminated.

[Brief description of the drawings]

FIG. 1 is an illustrative view showing one embodiment of the present invention;

FIG. 2 is an illustrative view showing a room thermostat for a priority room used in the embodiment of FIG. 1;

FIG. 3 is an illustrative view showing a room thermo for a general room used in the embodiment of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Air conditioning system 12a-12e ... Room 14 ... Controller 16 ... Air conditioner 18 ... Casing 42 ... Return air fan 46 ... Supply air fan 48 ... Cooling coil 50 ... Heating coil 52 ... Humidifier 54 ... Temperature sensor 56 ... Outside air Mouth 84: Air supply duct 90: VAV unit 92: Room thermo 102: Operation panel

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Shuzo Akita 28 Hirade Industrial Park, Utsunomiya City, Tochigi Pref. 5-26475 (JP, A) JP-A-4-143543 (JP, A) JP-A-62-2102944 (JP, U) JP-A-5-32939 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F24F 11/04 F24F 11/02 102

Claims (1)

(57) [Claims] At least one of the rooms which can be designated as a priority room
An air conditioning system that simultaneously air-conditions a plurality of rooms including a candidate room , a room thermomeans provided in the plurality of rooms, an air conditioner that heats or cools at least outside air and supplies the air to each of the plurality of rooms, A plurality of VAV units provided in association with each of the plurality of chambers and individually controlling an air supply amount supplied to each of the plurality of chambers, and priority switch means provided in the candidate room, The candidate room where the priority switch means was last operated is
A priority room , controlling the VAV unit provided in connection with the priority room so that the amount of air supplied to the priority room becomes the maximum air supply amount, and a signal from the room thermo means of the priority room. An air conditioning system configured to control an air conditioning temperature of the air conditioner according to