JP3169782B2 - Air conditioner - 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 conditioner,
In particular, the present invention relates to an air conditioner for air-conditioning a room provided with equipment that requires exhaust such as fire equipment and experimental equipment.

[0002]

2. Description of the Related Art In a conventional air conditioner 1 shown in FIG.
An air supply fan 3 that rotates air (outside air) heated or cooled to a predetermined temperature through an indoor coil 2 at a constant rotation speed
Thus, the air is supplied into the room 5 to be air-conditioned through the air supply duct 4.

[0003]

The required air volume in the room 5 varies depending on the usage of the fire equipment 6 such as a gas range. That is, when the fire equipment is used, the required air flow increases because the consumption of oxygen increases, and when the fire equipment is not used, the required air flow decreases because the consumption of oxygen decreases.

However, in the prior art, the rotation speed of the air supply fan 3, that is, the air supply amount to the room 5 to be air-conditioned is fixed regardless of the use condition of the heating equipment. When the fire equipment 6 is not used, it is contrary to energy saving when the fire equipment 6 is not used. On the other hand, when the supply amount is set to be small, the fire equipment 6 becomes oxygen deficient when used, or a predetermined indoor temperature cannot be secured. There was fear.

Therefore, a main object of the present invention is to provide an air conditioner that can save energy and realize a more comfortable air-conditioning environment.

[0006]

SUMMARY OF THE INVENTION The present invention requires exhaust air.
An air conditioner for air-conditioning a room provided with a plurality of fire facilities, wherein heated or cooled air is supplied to the room.
An air supply fan that blows air into the inside, an exhaust port provided in the room in relation to each of the fire facilities, an exhaust duct that communicates each of the exhaust ports with the outside, an exhaust duct that is provided in each of the exhaust ports, and A fire damper that blocks the flame and controls the amount of exhaust from each exhaust port individually, and is provided in connection with the exhaust duct and exhausts air from the room
That the exhaust fan, fire equipment changeover switch which is switched in accordance with the respective use conditions of and fire facilities provided in association with the respective gas to each of the fire equipment or
Supply means for supplying electricity, provided in connection with the supply means
Detecting means for detecting the total supply of gas or electricity,
And when the output of the detecting means falls below a predetermined value, the switching switch
Of the air supply and exhaust fans according to the switch status
And the opening of the fire damper, and the output of the detection
Value, the air supply fan
Fan and exhaust fan
An air conditioner including a control unit for increasing an opening degree of a damper .

[0007]

The opening of each of the fire prevention dampers provided in association with the corresponding exhaust port is adjusted according to the state of each changeover switch provided in connection with each of the plurality of facilities requiring exhaust, and all of them are provided. Of the air conditioner and the exhaust fan are controlled according to the state of the changeover switch. For example, if all the changeover switches are in the "OFF" state, all of the fire dampers associated with each facility are closed, and ventilation can be performed with a minimum required amount using an exhaust port provided independently of the facility. The air conditioner and the exhaust fan are operated at the minimum air volume.
On the other hand, when all the changeover switches are set to “large”, all of the fire dampers associated with each facility are opened, and the air conditioner and the exhaust fan are operated at the maximum air volume. Also, when the changeover switch is set to “small” or “medium”, the fire dampers associated with each facility are opened at an opening corresponding to the state of the corresponding changeover switch, and the state of all the changeover switches is changed. The air volume of the air conditioner and the exhaust fan is controlled accordingly.

Further, when each facility is a fire facility, when the supply amount of gas or electricity supplied to the fire facility becomes a predetermined value or more, regardless of the state of the changeover switch, the exhaust port corresponding to the fire facility is provided. All of the associated fire dampers are opened and the air volume of the air conditioner and the exhaust fan is increased.

[0009]

According to the present invention, since the opening degree of the fire prevention damper and the air flow rate of the air conditioner and the exhaust fan are controlled in accordance with the load of the equipment requiring exhaust, a comfortable operation corresponding to the load is achieved. An air-conditioning environment can be realized, and energy can be saved. In addition, when the supply amount of gas or electricity supplied to the fire equipment is equal to or more than a predetermined value, the opening degree of the fire prevention damper is increased and the air flow rates of the air conditioner and the exhaust fan are increased. Even if mistakes are made, the outside air volume necessary for ventilation can always be secured.

The above objects, 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.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An air conditioner 10 of this embodiment shown in FIG.
Is for air-conditioning a room 12 to be air-conditioned by an air conditioner 16 controlled by an air-conditioning controller 14. The air conditioner 16 includes an indoor unit 18 installed indoors and an outdoor unit 20 installed outdoors, and the indoor unit 18 includes a housing 22. Openings 24 and 26 are formed in the upper and lower side surfaces of the housing 22,
Is provided with an air supply fan 28 and an air filter 30 in association with the openings 24 and 26, respectively. Further, an indoor coil 32 is provided at a lower central portion of the housing 22, and a bypass fan 34 for returning the air passing through the indoor coil 32 to the inlet of the indoor coil 32 is provided above the indoor coil 32. Outside the housing 22, an inverter 36 and the like for controlling the rotation speed of the air supply fan 28 to adjust the amount of air to be blown are provided.

On the other hand, the outdoor unit 20 includes a housing 38. An opening 40 is formed on an upper surface of the housing 38, and an opening 42 is formed on a side surface of the housing 38. An outdoor coil 46 and a compressor 48 are provided inside the housing 38.
A four-way valve 50 is provided, and an exhaust fan 52 is provided in association with the opening 40. And the housing 3
An inverter 54 and the like for controlling the performance of the compressor 48 are provided outside the compressor 8. The indoor coil 32, the outdoor coil 46, the compressor 48, and the four-way valve 50 are connected to each other via a pipe 56 through which a refrigerant passes, thereby forming a refrigerant circuit.

The inverters 36 and 54 are connected to an AO (analog output) terminal 58 of the air conditioning controller 14, and the bypass fan 34, the four-way valve 50, and the exhaust fan 52 are connected to a DO (digital output) terminal 60. You. On the other hand, in the room 12 to be air-conditioned,
One of the air supply ports 62a, 62b and 62c and four exhaust ports 64a, 64b, 64c and 64d are formed, and each of the air supply ports 62a to 62c and the opening 24 of the indoor unit 18 (the outlet of the air conditioner 28). Each of the exhaust ports 64a to 64d is communicated via the air supply duct 66, and the exhaust port 68 opened to the outside is communicated via the exhaust duct 70. A temperature sensor 72 is provided near the inlet of the air supply duct 66, and a temperature sensor 72 is provided in the exhaust duct 70.
In connection with each of the exhaust ports 64a, 64b, 64c and 64d, a damper controller 74a, 74b, 74
Damper 76 whose opening is controlled by c and 74d
a, 76b, 76c and 76d are provided. Dampers 76a, 76b, and 76c corresponding to fire facilities 84a, 84b, and 84c to be described later function as fire prevention dampers. In addition, in connection with the exhaust port 68, the inverter 78
An exhaust fan 80 whose rotation speed is controlled by the exhaust fan is provided.

The interior of the room 12 has exhaust ports 64a, 64
b and 64c, the exhaust hood 82
a, 82b and 82c, fire equipment 84a, 84b and 84c which require exhaust such as a gas range, and changeover switches 86a, 86b and 86c are provided, and a gas supply for supplying gas to each of the fire equipment 84a to 84c. A gas flow meter 9 for detecting a gas flow rate is provided in a pipe 88.
0 is provided. Here, each of the changeover switches 86a to 86
c is, as shown in FIG.
The configuration is such that four states (“OFF”, “small”, “medium”, and “large”) can be switched according to the usage state (the magnitude of the thermal power, etc.) of 4c. In addition, room 12
The air conditioner 16 is turned on / off at a predetermined location,
A room switch 94 including a main switch 92 for selecting an operation mode and a temperature detector and a temperature setter (not shown) is provided.

The temperature sensor 72 and the gas flow meter 90
And a room thermo 94 are connected to an AI (analog input) terminal 96 of the controller 14 and an inverter 78
And the damper controllers 74a, 74b and 74c are connected to an AO (analog output) terminal 58, the changeover switches 86a, 86b and 86c and the main switch 92 are connected to a DI (digital input) terminal 98, and the damper controller 74d is connected. It is connected to a DO (digital output) terminal 60.

The number of air supply ports 62, exhaust ports 64, gas appliances 84, changeover switches 86, etc. may be increased or decreased as necessary. A device provided with an air temperature setting device may be used. In operation, when the air conditioner 16 is turned on by the main switch 92 and the heating operation mode is selected, the air supply fan 28, the bypass fan 34, the exhaust fan 52, and the exhaust fan 80 are driven, and the air conditioner 16 is operated. The refrigerant circuit is operated in a heating cycle. That is, the refrigerant circuit is operated as a heat pump. Then, in the indoor unit 18 of the air conditioner 16, after the air (outside air) from outside is taken into the housing 22 through the opening 26 and is dust-removed through the air filter 30,
Heated through the indoor coil 32. Then, the air that has passed through the indoor coil 32 is sucked by the air supply fan 28, and is supplied into the room 12 from the air supply ports 62 a to 62 c through the air supply duct 66 by the air supply fan 28. At this time, a part of the air that has passed through the indoor coil 32 is returned to the inlet of the indoor coil 32 by the bypass fan 34, and is further heated through the indoor coil 32. Air supply fan 28
Is controlled mainly based on the states of the changeover switches 86a to 86c.

In the outdoor unit 20, air (outside air) from the outside is taken into the housing 38 through the opening 42, heat-exchanged (cooled) through the outdoor coil 46, and then discharged from the opening 40 to the outside by the exhaust fan 52. You. The heat drawn from the outside air in the outdoor coil 46 is used to heat the outside air in the indoor coil 32. The capacity of the compressor 48 is controlled by the inverter 54 so that the temperature of the room 12 detected by the room thermo 94 becomes equal to the set temperature set by the room thermo 94.

On the other hand, in the room 12, the exhaust fan 8
By 0, the air in the room 12 is discharged outside. At this time, the air flow rate of the exhaust fan 80 is mainly determined by the changeover switch 86.
a is controlled based on the state of each of the exhaust ports 64a.
-64d is discharged from each damper controller 7
It is individually controlled by each of the dampers 76a to 76d controlled by 4a to 74d. Dampers 76a to 76c functioning as fire protection dampers are mainly changeover switches 86a to 86
It is controlled based on the state of c.

As described above, the air volumes of the air supply fan 28 and the exhaust fan 80 and the opening degrees of the fire prevention dampers 76a to 76c are controlled mainly based on the states of the changeover switches 86a to 86c. Is greater than or equal to a predetermined value, regardless of the state of each of the changeover switches 86a to 86c, the opening degree of each of the fire prevention dampers 76a to 76c is increased so as to secure an outside air amount corresponding to the gas usage amount, and the air supply fan 28 and the air volume of the exhaust fan 80 are increased. When a fire signal from a fire detection switch (not shown) or the like is input to the controller 14, all the dampers 7 regardless of the state of the changeover switches 86a to 86c.
6a to 76d are closed, the air conditioner 16 is stopped, and smoke and flame are shut off.

During cooling, the refrigerant circuit is operated in a reverse cycle during heating. That is, the refrigerant circuit is operated as a refrigerator. Hereinafter, the air conditioning controller 1 based on the states of the changeover switches 86a to 86c according to the flowchart of FIG.
The control operation of the air volume and the damper opening degree in No. 4 will be described. However, in this embodiment, the maximum air volume A of the air supply fan 28 is 3000 m ³ / hr, and the exhaust air volume B to be exhausted from the exhaust port 64d provided independently of the fire equipment is 600 m ³ / hr.
Is set to Also, the exhaust ports 64a, 64b and 64
displacements C ₁ , C ₂ and C to be exhausted from each of
₃ is “0 m ³ / hr” when the state of each of the change-over switches 86 a to 86 c is “OFF”, and “40 m ³ / hr” when the state is “small”.
0 m ³ / hr ”,“ medium ”is set to“ 600 m ³ / hr ”, and“ large ”is set to“ 800 m ³ / hr ”.

When the air volume control operation of the air conditioning controller 14 is started, it is first determined in step S1 whether or not the main switch 92 has been turned on. If it is determined that the main switch 92 has been turned on, the process proceeds to step S3, in which the air conditioner is started. 1
6, and the damper 76d is fully opened. On the other hand, if it is determined in step S1 that the main switch 92 is not turned on, the process waits until the main switch 92 is turned on in a state where the air conditioner 16 is stopped and the damper 76d is closed in step S5.

In the following step S7, the displacement C₁, C_Two
Or C_ThreeThe largest of C_MAXIs detected. And
For example, those of the changeover switches 86a, 86b and 86c
Whether each state is "OFF", "Medium" and "Large"
If the displacement C₁, C_TwoAnd C _ThreeEach is 0m^Three/ hr
 , 600m^Three/ hr and 800m^Three/ hr, so the maximum
Displacement C_MAXIs 800m^Three/ hr (= C_Three).

Then, in step S9, the respective openings C ₁ ′, C ₂ ′ and C ₃ ′ of the dampers 76a, 76b and 76c are obtained according to the equation (1). In the next step S11, the respective dampers 76a, 76 76b and 76c are damper controllers 74a, 74b and 74
The opening degree C ₁ ′, C ₂ ′ and C ₃ ′ are controlled by c.

[0024]

[Number 1] C _n '= a ^{_{(C n / C MAX) m}} × 100 [%] (1 ≦ m ≦ 2 n = 1,2,3) the following step S13, the supply air fan 28 according to the numerical formula 2 What percentage of the maximum air volume is operated is calculated, and the calculation result E is given to the inverter 36.

[0025]

E = {(B + C ₁ + C ₂ + C ₃ ) / A} × 10
0 [%] Therefore, in step S15, the air supply fan 28 is operated at the maximum air volume E (%). For example, the changeover switch 86a, the respective states of 86b and 86c is "OFF", if "medium" and "large", each exhaust amount C _1, C ₂ and C ₃ is 0m ³ / hr, 600m ³
/ hr and 800 m ³ / hr. Therefore, if the value of the order m in the equation (1) is set to “1”, the values of the openings C ₁ ′, C ₂ ′ and C ₃ ′ obtained in step S9 are respectively 0%, 75% and 100%, step S
The value (air volume) E obtained in 13 is 66.66 ...%
Becomes

It should be noted that the value of the order m in Equation 1 is 1 ≦ m ≦
The reason for setting arbitrarily within the range of 2 is that when the damper opening is close to 0%, the ratio of the air flow change to the opening change is small, and when the damper opening is close to 100%, the air flow for the opening change is small. The damper characteristic that the rate of change is large is taken into consideration. When the order m is “1.5”,
The relationship between the air volume and the opening can be represented by, for example, a graph as shown in FIG. 4, and the air volume can be more appropriately controlled according to the damper characteristics.

According to this embodiment, the fire facilities 84a to 84a-8
4c and the respective exhaust ports 64a associated with the fire facilities 84a to 84c in accordance with the use condition of the 4c.
Since the amount of exhaust from ~ 64c is controlled,
Energy saving can be achieved and a comfortable air-conditioning environment can be realized. In addition, since the gas usage is monitored by the gas flow meter 90 and the outside air amount corresponding to the gas usage is ensured irrespective of the state of the changeover switches 86a to 86c, an erroneous operation of the changeover switches 86a to 86c is prevented. Even if it does, problems such as oxygen deficiency do not occur.

In the above embodiment, the indoor coil 3
2, outdoor coil 46, compressor 48 and four-way valve 5
The case where the air conditioner 16 of the system of heating or cooling the outside air by operating the refrigerant circuit having 0 or the like as a heat pump or a refrigerator is shown, for example, as shown in FIG. An air conditioner 10 that heats or cools outside air through hot or cold water
2 may be adopted.

In the above-described embodiment (FIGS. 1 and 5),
Although a gas appliance is used as the heating equipment 84a to 84c, it may be replaced with an electric appliance. In this case, electric power is supplied in place of the gas, and a watt hour meter is provided instead of the gas flow meter 90. When the output of the watt hour meter becomes equal to or more than a predetermined value, the outside air amount according to the power usage amount is reduced. The opening degree of each of the fire prevention dampers 76a to 76c is increased so that the air supply fan 28 and the exhaust fan 80 can be secured.
Is increased.

[0030]

[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 changeover switch in the embodiment in FIG. 1;

FIG. 3 is a flowchart showing an air volume control operation in the embodiment of FIG. 1;

FIG. 4 is a graph showing air volume-opening characteristics of a damper.

FIG. 5 is an illustrative view showing a modified example of the air conditioner;

FIG. 6 is an illustrative view showing a conventional technique;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Air conditioning system 12 ... Room 14 ... Air conditioning controller 16, 102 ... Air conditioner 28 ... Air supply fan 32 ... Indoor coil 36, 54, 78 ... Inverter 64a-64d ... Exhaust port 74a-74d ... Damper controller 76a-76d ... Exhaust dampers 84a to 84c ... Fire facilities 86a to 86c ... Changeover switches 90 ... Gas flow meters

──────────────────────────────────────────────────続 き Continuing on the front page (72) Norio Kuzuoka, Kashima Construction Co., Ltd. 6-5-30 Akasaka, Minato-ku, Tokyo (72) Inventor Tadashi 6-5-30 Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Shuzo Akita 28 Hirade Industrial Park, Utsunomiya City, Tochigi Prefecture Inside Tochigi Plant of Kubota Train Co., Ltd. (72) Inventor Tomoaki Horio 2-6-6 Moto Asakusa, Taito-ku, Tokyo Tokyo Nissan Taito Building Inside Kubota Train Co., Ltd. (72) Inventor Ken Nakano 28, Hirade Industrial Park, Utsunomiya City, Tochigi Prefecture Inside Kubota Train Co., Ltd. Tochigi Plant (56) References JP-A-4-267826 (JP, A) (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F 11/04 F24F 13/02

Claims (1)

(57) [Claims] 1. An air conditioner for air-conditioning a room provided with a plurality of fire facilities requiring exhaust air, wherein air is supplied to blow heated or cooled air into the room.
A fan, an exhaust port provided in the room in association with each of the fire facilities, an exhaust duct communicating each of the exhaust ports with the outside, a flame provided in association with each of the exhaust ports, and fire damper for individually controlling the amount of exhaust from each of the exhaust ports as well as blocking, and the room within which is provided in connection with the exhaust duct
An exhaust fan that exhausts air, provided in association with each of the fire facilities, and
Fire equipment changeover switch which is switched in accordance with the respective use conditions, subjected to supply gas or electricity to each of the fire equipment
Supply means, provided in connection with said supply means and said gas or
Detecting means for detecting the total supply of electricity and the detected hand
When the output of the stage falls below a predetermined value, the state of the switch is changed.
The air volume of the air supply fan and the exhaust fan
And the opening degree of the fire prevention damper, and the output of the detection means is controlled.
When the force is equal to or greater than the predetermined value, the state of the changeover switch
Regardless, the air volume of the air supply fan and the exhaust fan
Increase the opening of the fire damper as it increases
An air conditioner comprising a control unit .