JP2980221B2 - 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 appropriately switching between a ceiling blowing operation and a floor blowing operation for air conditioning.

[0002]

2. Description of the Related Art An example of this type of conventional air conditioning system is disclosed in Japanese Patent Application Laid-Open No. 3-168439. In this prior art, a plurality of ceiling outlets are provided on a ceiling of a room to be air-conditioned, and a plurality of floor outlets are provided on a floor. The ceiling blowing operation is performed during cooling, and the floor blowing operation is performed during heating.

[0003]

In the above-mentioned prior art,
Cooling air is supplied from the ceiling outlet during cooling, and warm air is supplied from the floor outlet during heating, so there is an advantage that air conditioning can be performed efficiently, but the amount of air supplied from each ceiling outlet or There has been a problem that the amount of air supplied from the floor outlet cannot be individually controlled, and the deviation of the indoor temperature distribution cannot be eliminated.

[0004] Therefore, a main object of the present invention is to provide an air conditioning system that can realize a better air-conditioning environment.

[0005]

SUMMARY OF THE INVENTION The first aspect of the present invention is the air conditioning system for conditioning the two sections, the ceiling blower opening provided in association with each of the two sections, floor outlet And a required amount of air flow calculating means for calculating the required amount of air in the two areas based on the temperature difference between the room temperature detected by the room thermometer and the set temperature, and heating or cooling at least the outside air and sending out from the air supply port. Air conditioner,
A wind speed sensor for measuring the amount of air supplied from the air supply port, an air supply amount adjusting means for adjusting the amount of air supply so as to satisfy the required air volume, and a first means for communicating the air supply port with each of the ceiling outlets. A duct, a second duct communicating between the air supply port and the floor outlet, and controlled based on a signal from a corresponding room thermo provided in connection with the ceiling outlet of one of the two areas. First VAV unit, two zones
A second VAV unit provided in connection with any one of the floor outlets and controlled based on a signal from the corresponding room thermometer, and whether the air supplied from the air supply port is passed through the first duct. Alternatively, the air conditioning system includes damper means for selecting whether to pass through the second duct.

A second aspect of the present invention is the air conditioning system for conditioning the two sections, the ceiling blower opening provided in association with each of the two sections, floor outlet and room thermo at least the outside air An air conditioner that heats or cools the air from the air supply port, a first duct communicating the air supply port with each of the ceiling outlets, a second duct communicating the air supply port with each of the floor outlets, One of the two areas
A first VAV unit provided in connection with one of the ceiling outlets and controlled based on a signal from a corresponding room thermometer, provided and associated with a floor outlet in one of two areas Second VAV unit and first VAV controlled based on a signal from room thermo
The air supply amount is adjusted by VAV request air volume calculation means for calculating a VAV request air volume based on a temperature difference between a room temperature and a set temperature detected by a room thermostat related to the unit and the second VAV unit, and the first VAV unit or the second VAV unit. Required air supply temperature calculating means for calculating a required air supply temperature based on a temperature difference between a room temperature and a set temperature detected by a room thermo provided in an area other than the area to be supplied, and air supply so as to satisfy the required air supply temperature Air supply temperature adjusting means for adjusting the temperature of the air supplied from the mouth, the VAV required air volume and the first V
Means for calculating a required air supply amount by adding a predetermined air supply amount to an area not related to the AV unit and the second VAV unit, a wind speed sensor for measuring an air supply amount sent from an air inlet, a required air supply amount Air supply amount adjusting means for adjusting the amount of air supplied from the air supply port so as to satisfy the condition, and selecting whether the air supplied from the air supply port is passed through the first duct or the second duct. It is an air conditioning system provided with a damper means.

[0007]

According to the first aspect of the invention, during cooling, the first duct is selected by operating the damper means, and the supply air cooled to the required temperature by the air conditioner is supplied from each ceiling outlet to each area to be air-conditioned. Supplied. The amount of air supplied from the air conditioner is adjusted by controlling the number of revolutions of the air supply fan so as to satisfy the required air volume of the two areas, and the air is supplied to one of the areas. The supplied air amount is adjusted by the first VAV unit. On the other hand, at the time of heating, the second duct is selected, and the supply air heated to the required temperature by the air conditioner is supplied from each floor outlet to each area to be air-conditioned. The amount of air supplied from the air conditioner is adjusted by controlling the number of revolutions of the air supply fan so as to satisfy the required air volume of the two areas, and the air is supplied to one of the areas. The supplied air amount is the second V
It is adjusted by the AV unit.

[0008] The required air volume of the entire two areas is obtained by summing the required air volume of each area obtained based on the temperature deviation between the room temperature detected by the room thermometer and the set temperature. In the second invention, during cooling, the first duct is selected by operating the damper means, and supply air cooled to a required temperature by the air conditioner is supplied from each ceiling outlet to each area to be air-conditioned. . The supply air temperature is
As air charge by the 1VAV unit satisfies the supply air temperature required in the area other than the area to be adjusted, is adjusted by the cooling coil or the like, also, any one
The amount of air supplied to the other area is regulated by the first VAV unit. On the other hand, at the time of heating, the second duct is selected, and the supply air heated to the required temperature by the air conditioner is supplied from each floor outlet to each area to be air-conditioned. Temperature of the air supply, as the air supply amount by the 2VAV unit satisfies the supply air temperature required in the area other than the area to be adjusted, is adjusted by the heating coil or the like, also have
The amount of air supplied to one or the other area is adjusted by the second VAV unit.

The required supply air temperature is obtained based on a temperature difference between the room temperature detected by the room thermometer and the set temperature.

[0010]

According to the present invention, a better air-conditioning environment can be realized. In addition, since it is not necessary to provide VAV units for all areas, equipment costs can be reduced. Further, according to the second aspect, a specific amount of air is supplied to a specific area, and the best air conditioning environment can be realized by securing the number of ventilations and the amount of outside air in the area.

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.

[0012]

FIG. 1 shows an air conditioning system 1 according to this embodiment.
0 is for air conditioning of the two sections 12a and 12b in the room 12, and includes an air conditioner 16 controlled by the controller 14. The air conditioner 16 includes a casing 18. A partition wall 20 is provided inside the casing 18.
Is formed, and a total heat exchanger 22 is provided on the partition wall 20. Thereby, the first chamber 2 is provided inside the casing 18.
4, a second chamber 26, a third chamber 28, and a fourth chamber 30 are formed. The partition wall 20 is provided with a damper 32 that opens and closes the first chamber 24 and the second chamber 26 so as to open and close.

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, humidifier 52, temperature sensor 54 and wind speed sensor 56
Are arranged in this order. And the third chamber 28 and the fourth
The outside air port 58 and the exhaust port 6 are provided on the left side of the chamber 30, respectively.
0 is formed, and inside the third chamber 28, a wind speed sensor 62
And an air filter 64.

The cooling coil 4 is provided outside the casing 18.
8 and electric valves 66 and 68 for operating the heating coil 50, an electromagnetic valve 70 for operating the humidifier 52, and inverters 72 and 74 for controlling the rotation speeds of the return air fan 42 and the air supply fan 46. Then, the humidity sensor 40, the temperature sensors 38 and 54, and the wind speed sensor 56
And 62 are connected to an AI (analog input) terminal 76 of the controller 14, and inverters 72 and 7
4 and the electric valves 66 and 68 and the damper 32 are AO
(Analog output) terminal 78 is connected, electromagnetic valve 70 is connected to DO (digital output) terminal 82, and inverters 72 and 74 are further connected to DI (digital input) terminal 80.

On the other hand, in the first section 12a of the chamber 12, three ceiling outlets 84a and three floor outlets 86a are respectively formed, and in the second section 12b, a ceiling outlet 84b and a floor outlet 86b are formed. You. And each ceiling outlet 8
4a and 84b communicate with the air supply port 44 and the return air port 34 of the air conditioner 16 via a first duct 88, and the floor outlets 86a and 86b communicate with the return air port 34 and the air supply port 4 respectively.
4 is communicated via the second duct 90. Also, the first
The air conditioner 16 is provided in the duct 88 and the second duct 90.
Dampers 92 and 94 are provided in connection with the return air port 34, and dampers 96 and 98 are provided in connection with the air supply port 44. The dampers 92, 94, 96 and 98 are connected to the DO terminal 82 of the controller 14.

In the first duct 88, a VAV (variable air volume) damper unit 104 including a damper 100 and a wind speed sensor 102 is provided in association with the ceiling outlet 84b of the second section 12b. Second
The room thermo 106b provided in the area 12b is connected. The VAV damper unit 104 includes the operation panel 10
8 is connected to an SI (serial interface) terminal 110 of the controller 14. In the second duct 90,
A VAV (variable air volume) fan unit 116 including a fan 112 and an inverter 114 is provided in association with the floor outlet 86b of the second section 12b. The VAV fan unit 116 is connected to the AO terminal 78 of the controller 14.

A room thermo 106a is provided in the first section 12a, and the room thermo 106a is connected to the AI terminal 76 of the controller 14. In operation, when the cooling operation is selected by the operation panel 108, the electric valve 68 of the heating coil 50 is closed, and the electric valve 66 of the cooling coil 48 is opened. Also,
Dampers 92 and 98 are closed and dampers 94 and 96 are open. Then, the return air fan 42 and the air supply fan 46 are driven at a predetermined rotation speed.

When the return air fan 42 and the supply air fan 46 are driven, the air (return air) in the chamber 12 is discharged from each floor outlet 86.
a and 86b are taken into the first chamber 24 of the air conditioner 16 through the second duct 90. The return air taken into the first chamber 24 is dust-removed through the air filter 36, a 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 damper 32. I do. The return air flowing into the fourth chamber 30 is discharged outside through the exhaust port 60. On the other hand, the outside air from the outside
8 and into the third chamber 28, where the air filter 6
After the dust is removed through the heat exchanger 4, the second heat is passed through the total heat exchanger 22.
The air flows into the chamber 26 and is mixed with the return air flowing through the damper 32. At this time, the opening degree of the damper 32 is controlled so that the outside air amount measured by the wind speed sensor 62 becomes the necessary outside air amount.

The mixture (air supply) of the outside air and the return air is sufficiently mixed in the air supply fan 46, then cooled to a constant temperature through the cooling coil 48, and passed through the first duct 88 to each of the ceiling outlets 84 a and 84 b. From the room 12 to be air-conditioned. The rotation speed of the air supply fan 46 is controlled by the inverter 74 and the like such that the air supply amount measured by the wind speed sensor 56 becomes equal to the required air volume of the entire chamber 12. Since the temperature deviation (room temperature-set temperature) and the required air volume have a certain relationship, for example, as shown in the graph of FIG. 2, the first zone is determined based on the temperature difference between the room temperature and the set temperature detected by the room thermo 106a. 12a and the second area 1
The required airflow of the entire room 12 can be obtained by obtaining the required airflow of 2b and summing them. Second
The amount of air supplied to the zone 12b is such that the air volume detected by the wind speed sensor 102 is equal to the required air volume in the second zone 12b.
Will be adjusted by

During the cooling operation, the operation of the VAV fan unit 116 is stopped. On the other hand, the operation panel 10
When the heating operation is selected by 8, the electric valve 66 of the cooling coil 48 is closed, the electric valve 68 of the heating coil 50 is opened, and the electromagnetic valve 70 of the humidifier 52 is opened as necessary. Also, dampers 92 and 98
Is opened, and the dampers 94 and 96 are closed. Further, the VAV damper unit 10 receives a command by digital communication through the SI terminal 110 of the controller 14.
The fourth damper 100 is fully opened. Then, the return air fan 42 and the air supply fan 46 are driven at a predetermined rotation speed.

When the return air fan 42 and the supply air fan 46 are driven, the air (return air) in the chamber 12 is discharged from each ceiling outlet 8.
4a and 84b are taken into the first chamber 24 of the air conditioner 10 through the first duct 88. A part of the return air taken into the first chamber 24 is discharged outside through the exhaust port 60, and the rest is mixed with the outside air in the second chamber 26. The mixture (air supply) of the outside air and the return air is sufficiently mixed in the air supply fan 46, heated to a constant temperature through the heating coil 50, humidified as necessary through the humidifier 70, and Is supplied from the floor outlets 86a and 86b into the room 12 to be air-conditioned.

The rotation speed of the air supply fan 46 is determined by the wind speed sensor 5.
The air supply amount measured by 6 is controlled by the inverter 74 and the like such that the air supply amount becomes equal to the required air flow amount of the entire room 12. The amount of air supplied to the second section 12b is adjusted by the VAV fan unit 116 so that the room temperature detected by the room thermo 106b becomes a predetermined constant temperature.

Information on the room thermo 106b is transmitted to the controller 14 by digital communication via the VAV damper unit 104 and the SI terminal 110 of the controller 14. According to this embodiment,
By operating the dampers 92 to 98, one of the ceiling blowing operation and the floor blowing operation can be selected, and the required air volume of the first section 12a and the second section 12b can be satisfied in any operating state. Therefore, a favorable air-conditioning environment can be realized.

In addition, only in connection with the second area 12b, VA
V damper unit 104 and VAV fan unit 1
Since 16 may be provided, equipment costs can be reduced. In the above-described embodiment, the amount of air supplied to the first area 12a and the second area 12b is adjusted. However, the cooling coil 48 is maintained while the amount of air supplied to the first area 12a is kept constant.
Alternatively, the first section 12a and the second section 12b can be individually air-conditioned by adjusting the supply air temperature using the heating coil 50. In this case, the required supply air temperature is obtained based on the temperature deviation between the room temperature detected by the room thermo 106a provided in the first section 12a and the set temperature, and the supply air temperature detected by the temperature sensor 54 is calculated as the required supply air temperature. The cooling coil 48 or the heating coil 50 is controlled to be equal to the air temperature. The air supply amount of the second chamber 12b is adjusted by the VAV damper unit 104 or the VAV fan unit 116. Further, the amount of air supplied from the air supply port 44 satisfies the total amount of air supplied to the first section 12a (constant) and the required amount of air in the second section 12b obtained based on the temperature deviation. Thus, it is adjusted by the air supply fan 46.

In the above-described embodiment, the case where the two sections 12a and 12b in the chamber 12 are individually air-conditioned is described. However, the present invention relates to the case where the two independent chambers are individually air-conditioned. Also applicable to In the above embodiment, the VAV damper unit 104 is provided in connection with the ceiling outlet 84b, and the VAV damper unit 104 is provided in connection with the floor outlet 86b.
Although the V fan unit 116 is provided, contrary to this embodiment, the VAV unit 116 is connected to the ceiling outlet 84b.
The fan unit 116 may be provided, and the VAV damper unit 104 may be provided in connection with the floor outlet 86b. Furthermore, the VAV damper unit 104 or the VAV damper unit 104 or VA is connected with both the ceiling outlet 84b and the floor outlet 86b.
Any of the V fan units 116 may be provided.

[Brief description of the drawings]

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

FIG. 2 is a graph showing a relationship between a temperature deviation and a required air volume.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Air conditioning system 12 ... Room 12a ... 1st area 12b ... 2nd area 14 ... Controller 16 ... Air conditioner 32, 92-98 ... Damper 42 ... Return air fan 46 ... Air supply fan 48 ... Cooling coil 50 ... Heating Coil 84a, 84b Ceiling outlet 86a, 86b Floor outlet 88 First duct 90 Second duct 104 VAV damper units 106a, 106b Room thermo 116 VAV fan unit

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoshio Fukushima 2-10-26 Fujimi, Chiyoda-ku, Tokyo Inside Maeda Construction Industries Co., Ltd. (72) Inventor Shuzo Akita 28 Kubota Train, Hirade Industrial Park, Utsunomiya City, Tochigi Prefecture (56) References JP-A-3-177740 (JP, A) JP-A-3-279726 (JP, A) JP-A-6-174262 (JP, A) (58) Fields surveyed ( Int.Cl. ⁶ , DB name) F24F 11/02

Claims (2)

(57) [Claims] 1. A air conditioning system for conditioning the two zones, the two ceiling blower opening provided in association with each of the zones, the floor outlet and room thermo, the room thermo is detected A required air volume calculating means for calculating a required air volume of the entire two areas based on a temperature deviation between the room temperature and the set temperature, an air conditioner that heats or cools at least outside air and sends it out from an air supply port, A wind speed sensor for measuring an amount of air supplied from an air port; an air supply amount adjusting means for adjusting the air supply amount so as to satisfy the required air amount; and a communication between the air supply port and each of the ceiling outlets. A first duct that communicates with the air supply port and the floor outlet.
Duct, said two one of the ceiling blower first 1VAV unit controlled based on a signal from the room thermo for and corresponding provided in association with the outlet of the zone, whereas one of the two sections A second VAV unit provided in connection with the floor outlet and controlled based on a signal from the corresponding room thermometer; and supplying air supplied from the air supply port to the first duct, or An air conditioning system, comprising: damper means for selecting whether to pass through the second duct. 2. An air conditioning system for air-conditioning two sections , comprising : a ceiling outlet, a floor outlet, and a room thermostat provided in association with each of the two sections; An air conditioner that cools and sends out from an air supply port; a first duct that communicates the air supply port with each of the ceiling outlets; a second duct that communicates the air supply port with each of the floor outlets
Duct, said two one of the ceiling blower first 1VAV unit controlled based on a signal from the room thermo for and corresponding provided in association with the outlet of the zone, whereas one of the two sections A second VAV unit provided in connection with the floor outlet and controlled based on a signal from the corresponding room thermometer; and a room temperature detected by the room thermometer associated with the first VAV unit and the second VAV unit. VA for calculating VAV required airflow based on temperature deviation from set temperature
V required air volume calculating means, based on a temperature difference between a room temperature detected by the room thermo and a set temperature detected by the room thermo provided in an area other than an area where the air supply is adjusted by the first VAV unit or the second VAV unit. Required air supply temperature calculating means for calculating an air temperature; air supply temperature adjusting means for adjusting the temperature of air supplied from the air supply port so as to satisfy the required air supply temperature; the VAV required air volume and the first VAV Means for calculating a required air supply amount by adding a predetermined air supply amount to a unit not related to the unit and the second VAV unit; a wind speed sensor for measuring an air supply amount sent from the air supply port; Air supply amount adjusting means for adjusting the amount of air supplied from the air supply port so as to satisfy the air amount, and supplying the air supplied from the air supply port to the first duct or Comprising a damper means for selecting whether passed to serial second duct, air conditioning system.