JPH0476328A - Air feeding and discharging system in building - Google Patents

Abstract

PURPOSE:To prevent an indoor area from becoming a negative pressure when an operation of an air discharging fan is started and further to prevent a cooling or heating effect from being reduced by a method wherein the same amount of fed air as that of the discharged air is carried out in cooperation with an air discharging duct and a range hood, and air fed into a building in cooperation with the air discharging operation is cooled or heated in compliance with a cooling or a heating effect. CONSTITUTION:As any of fan devices 5 starts to operate, surrounding air is fed through a system. The fed air absorbs waste heat at a full heat exchanger 3, is cooled or heated while passing through a cooling or heating coil device 4, reaches the fan device 5 during its operation. The air is blown into a room through this part to perform a cooling or a heating operation. In turn, as an air discharging duct fan 17 starts its operation, the surrounding air is sucked from an air conditioning duct 2 of an air conditioning system 1, the air passes through a full heat exchanger 3 and a branch duct 16 and further passes through an air supplying coil device 12 and the air is blown from an air supplying fan device 13 to a toilet and a bath room or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air supply/exhaust system that supplies air to kitchens, toilets, bathrooms, hallways, etc. in conjunction with exhaust air from these locations.

[Conventional technology] In ordinary houses and apartment complexes, exhaust air from kitchens, toilets, bathrooms, hallways, etc. is performed using range hood fans or exhaust fans attached to walls, and air is supplied naturally through windows, doors, or gaps in the building. In most cases, this is done through a supply air damper that opens and closes in conjunction with an exhaust fan.

[Issues with conventional technology] For this reason, the following problems arise.

a. When the exhaust fan starts operating, the pressure inside the room becomes negative, which may make it difficult to open or close the doors or windows, or the doors may close suddenly.

b. During the heating and cooling period, cold or warm outside air is introduced into the room, which reduces the heating and cooling effect and makes the room uncomfortable.

C9 When the room is being cooled or heated, the cold or warm air inside the room escapes, which is not desirable in terms of energy saving measures.

[Means for Solving the Problems] The present invention relates to an air supply/exhaust system in a building that can solve the problems described in a to C above, and its detailed configuration is as follows.

Air is introduced from outside the building via air conditioning ducts, the introduced air is cooled or warmed by a cooling/heating coil unit, and then blown into the room from a fan unit installed in each room, while the air inside each room is heated or cooled. It is configured to circulate through a coil unit or to give heat to the introduced air via a total heat exchanger and exhaust it to the outside of the building. Air supply fans are installed in kitchens, bathrooms, toilets, etc. equipped with exhaust duct fans. the supply air fan unit is connected to the total heat exchanger of the air conditioning system and the cooling/heating coil unit through a branch duct, and the supply air coil unit is installed within the branch duct; It is configured to communicate with the outside of the building through an air supply duct, and the air introduced from the air supply duct is cooled or warmed by an air supply coil unit and then supplied to the air supply fan unit, and the automatic controller has at least the following: It must have a circuit to control: a. When the exhaust duct fan starts operating, the supply air fan unit starts operating at the same time to control the air introduced from the air conditioning duct via the total heat exchanger. All or part of the air is blown into the room where the exhaust fan unit is used via the branch duct → supply air coil unit → supply air fan unit, b. The air conditioning system fan unit is in use and the supply air amount is insufficient. If so, replenish the air equivalent to this shortage via the air supply duct → air supply coil unit → air supply fan unit. When the air temperature is the air conditioning temperature, and the fan unit of the air conditioning system is not operating or is operating, or the temperature of the air absorbed by the total heat exchanger is above or below a preset temperature. The supply air coil unit is operated to cool or warm the supply air and then blown out from the supply air fan unit. d. When the exhaust duct fan installed in the kitchen starts operating, it is unconditionally passed through the supply air duct. A supply/exhaust system in a building that is characterized by introducing part or all of the supply air [Function] a. When the exhaust duct fan starts operating, the supply air fan unit starts operating at the same time and air conditioning is performed. The air introduced from the duct via the total heat exchanger is blown out to the exhaust fan unit or the room where it is used via the branch duct → supply air coil unit → supply air fan unit.

b. If the fan unit of the air conditioning system is in use and the amount of air supply is insufficient, replenish the amount of air corresponding to the shortage via the air supply duct → air supply coil unit → air supply fan unit.

The indoor or outdoor air temperature or air-conditioning temperature to which the exhaust duct fan is installed has started c0M rotation, and the fan unit of the air conditioning system is not operating, or is operating but heat is being absorbed by the total heat exchanger. When the temperature of the air is above or below a preset temperature, the air supply coil unit is operated to cool or warm the air supply and blow it out from the air supply fan unit.

d. When the exhaust duct fan installed in the kitchen starts operating, part or all of the air supply is unconditionally introduced via the air supply duct.

In addition, in the above operation (operation), it goes without saying that the exhaust air volume and the supply air volume are always controlled so as to be balanced.

Table 1 shows an example of control when air is supplied via a total heat exchanger alone and via an air supply duct.

Table 1 Margin below.

[Embodiment] The figure shows an embodiment of the present invention, and reference numeral 1 indicates an air conditioning system. This air conditioning system l includes an air conditioning duct 2 for introducing outside air, a total heat exchanger 3, an air conditioning coil unit 4. It consists of a fan unit 5, a filter 6, and an exhaust duct 7 in each room, and when any one of the fan units 5 starts operating, outside air is introduced through the system. This introduced air absorbs waste heat in the total heat exchanger 3, and is further cooled or warmed while passing through the air conditioning coil unit 4, reaching the operating fan unit 5, from which it is blown into the room, cooling or Perform heating. The cold or warm air once blown into the room returns as shown by the dotted line and reaches the air-conditioning coil unit 4 again through the filter 6, or is exhausted outside from the exhaust duct 7 via the total heat exchanger 3.

8 is an air supply system, and this air supply system 8 is an outside air introduction duct 9,
damper 10, filter 11, air supply coil unit 12,
It consists of an air supply fan unit 13, a branch duct 16 that branches between the total heat exchanger 3 and the cooling/heating coil unit 4 and communicates with the air supply coil unit, and a range hood air supply duct 14.

15 is a range hood, 17 is an exhaust duct fan, 18 is an exhaust duct, and 19 is a controller, which performs the following control.

When any of the exhaust duct fans 17 installed in the toilet, bathroom, etc. starts operating, the air conditioning duct 2 of the air conditioning system l
This air passes through the total heat exchanger 3, the branch duct 16, the air supply coil unit 12, and is blown out from the air supply fan unit 13 to the toilet, bathroom, etc. Exhaust air is exhausted from the exhaust duct fan 17 to the outside via the exhaust duct 18. Next, if a large number of exhaust duct fans 17 are used and the amount of air passing through the air conditioning system 1 is insufficient, the air is sent from the air supply duct 9 through the damper 10 and the filter 11 into the air supply coil unit 12. Introduce air equivalent to the shortage.

When the range foot 15 starts operating, it is basically the same as when the exhaust duct fan 17 starts operating, but
In the case of the range hood 15, the displacement is much larger than that of other exhaust duct fans 17, so this system is independent. In the figure, reference numeral 20 indicates a kitchen air supply fan unit provided in the kitchen when the range foot 15 does not have an air supply port.

Reference numeral 19 denotes a controller (control circuit), which performs the following controls in addition to the above-mentioned controls.

a. When any of the exhaust duct fans 17 starts operating, the air supply fan unit 13 starts operating.

b. When starting the operation of the air supply fan unit 13,
When the air conditioning system 1 is in operation, cold air or warm air cooled or warmed by the total heat exchanger 3 is introduced into the air supply fan unit 13 via the branch duct 16 and the air supply coil unit 12. However, if the amount of heat of the introduced air is insufficient, the air supply coil unit 12 is operated.

When the range hood 15 in the C8 kitchen starts operating, the air supply duct 9,
Outside air is introduced from two systems via the tamper 10, and the air supply coil unit 12 is operated during heating and cooling.

d. Even if the operation of the range foot 15 in the kitchen is stopped, if all the fan units 5 and the exhaust duct fan 17 are in operation, outside air is introduced from the two lines as in C above.

e. Adjust the opening degree of the damper lO in conjunction with the operating mode of the exhaust duct fan 17 to balance the air volume.

[Effects of the Present Invention] Since the present invention has the configuration and operation as described above, the present invention has the following effects.

a. Air supply equal to the amount of exhaust air is carried out in conjunction with the exhaust duct and range foot, so the indoor pressure does not become negative. Even if it were to happen, the negative pressure would be small.

As a result, opening and closing of doors and windows will not be hindered, and odors from other rooms will not enter.

b. The air introduced in conjunction with the exhaust air is cooled or warmed according to the heating and cooling effect, so there is no need to worry about damaging the heating and cooling effect.
It is energy efficient and does not cause discomfort due to cold air blowing in in winter or warm air in summer.

Since the duct of the C0 air conditioning system is basically used to supply air, the opening area of the air supply duct can be kept to a minimum and does not impair the beauty of the building.

d. Since the air supply and exhaust of the kitchen, toilet, bathroom, etc. can be individually controlled, it is possible to perform appropriate air supply and exhaust and air conditioning according to individual needs.

[Brief explanation of drawings]

The figure is a system diagram showing an embodiment of the present invention. l...Air conditioning system 2... Air conditioning duct 3... Total heat exchanger ４　・−・　Heating and cooling coil unit 5 ・−・ Fan unit 8... Air supply system 9.--Air supply duct 10-... Damper 11-... Filter Air supply coil unit air supply fan unit Range foot air supply duct range foot branch duct exhaust duct fan Exhaust duct controller Kitchen fan unit

Claims (1)

[Claims] Air is introduced from outside the building via an air conditioning duct, the introduced air is cooled or warmed by a cooling/heating coil unit, and then blown into the room from a fan unit installed in each room. A configuration in which indoor air is circulated through the cooling/heating coil unit or heat is given to the introduced air via a total heat exchanger and exhausted to the outside of the building; a kitchen and a bathroom equipped with an exhaust duct fan; Installing an air supply fan unit in a toilet, etc., communicating the air supply fan unit between the total heat exchanger of the air conditioning system and the cooling/heating coil unit through a branch duct, and installing the air supply coil unit within the branch duct; The air supply coil unit is configured to communicate with the outside of the building through an air supply duct, and the air introduced from the air supply duct is cooled or warmed by the air supply coil unit and then supplied to the air supply fan unit, and automatic control is provided. The equipment must have at least a circuit that performs the following controls: a. When the exhaust duct fan starts operating, the supply fan unit starts operating at the same time and the air is routed from the air conditioning duct via the total heat exchanger. All or part of the air introduced by the air is blown out through the branch duct → supply air coil unit → supply air fan unit into the room where the exhaust fan unit is being used. b. When the air conditioning system fan unit is in use. , If the supply air amount is insufficient, the air equivalent to this shortage is replenished via the supply air duct → supply air coil unit → supply air fan unit. c. The exhaust duct fan that has started operation is installed. The indoor temperature or outside temperature is the cooling/heating temperature, and the fan unit of the air conditioning system is not operating, or the air conditioning system fan unit is operating, but the temperature of the air absorbed by the total heat exchanger is the preset temperature. When the temperature is above or below, the supply air coil unit is operated to cool or warm the supply air and blown out from the supply air fan unit. d. If the exhaust duct fan installed in the kitchen starts operating, An air supply/exhaust system for a building, characterized in that part or all of the air supply is introduced via an air supply duct.