JPH0198841A - Air conditioning system - Google Patents

Abstract

PURPOSE:To enable an entire air conditioning to be performed by a method wherein at least one unit of a plurality of indoor units to be connected to an outdoor unit through a coolant pipe is applied as an indoor unit exclusively used for processing surrounding atmosphere having functions to ventilate, remove dust and recover heat. CONSTITUTION:Surrounding atmosphere is sucked from a suction port 21 into an indoor unit 4 for exclusively processing the surrounding atmosphere, dust is removed with a high performance filter 22 and then the surrounding atmosphere is flowed into a total heat exchanger 23. In turn, indoor air is sucked from an indoor air suction grill 6 into the indoor unit 4, its dust is removed by an intermediate performance filter 29, the air is flowed into a total heat exchanger unit 23, heat exchanged within it, and indoor air is discharged out of an outer wall 11 by a blower 24b. The surrounding atmosphere is cooled (heated) with an evaporator (condenser) through blower 24a, passes through a surrounding atmosphere blowing port 27, and is discharged to a primary side of the evaporator (condenser). In case of heating, the surrounding atmosphere is humidified by a humidifier 25. In turn, an indoor unit 2 may perform a dust removing operation with a filter 22 in simultaneous with a cooling or a heating operation. The surrounding atmosphere of which dust is removed, heat of the atmosphere is recovered, the atmosphere is heated and humidified and also discharged into an indoor area through a blowing port of the indoor unit 2 in simultaneous with the former operation and the indoor area is totally air conditioned.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an air conditioning system used for air conditioning such as cooling and heating of buildings.0 [Prior Art] Conventional direct expansion multi-air conditioning system The system connects multiple indoor units to one outdoor unit using refrigerant piping to perform heating and cooling.
The objectives of air conditioning are temperature, humidity, dust concentration, CO・o
Of O2 concentration and airflow control, only temperature and airflow were satisfied, and the air conditioning was far from meeting the regulatory values of the ``Act on Maintaining a Hygienic Environment in Buildings'', commonly known as the ``Building Plumbing Act.'' . In addition, regarding CO・0OZA control, it is necessary to introduce and dilute outside air, and supply and exhaust is carried out using ventilation fans, etc., but since warmed or cooled indoor air is exhausted, energy is consumed. The loss was also large, and in order to control humidity and dust concentration in the winter, it was necessary to install a humidifier and air purifier in each room in addition to the 1-room system. Tsut
b. With conventional direct expansion multi-air conditioning systems, it is difficult to clear the regulatory values of the Building Plumbing Act.
It was widely perceived as a system for small buildings that was not subject to the Building Control Act, or as a cheap air conditioning system that was only used for heating and cooling.

FIG. 3 is a diagram of a conventional direct expansion multi-air conditioning system. (1) is an outdoor unit that consists of a compressor, a four-way switching valve/condenser, a refrigerant control circuit (not shown), etc., and is installed in a building EK; (2) is an evaporator, a throttling device ( (not shown), etc., and is installed in the ceiling indoors, and is connected to the outdoor unit (1) through refrigerant piping (3). (7a
) is a ventilation fan that introduces outside air into the room, and (7b) is a ventilation fan (
Ventilation I that exhausts indoor air equivalent to the ventilation fan air volume in 7a)
I, (8) is a dust removal air purifier installed on the indoor floor;
(9) is a humidifying unit for humidifying the air in proportion to the amount of outside air introduced from the ventilation fan (ma) in winter.

Next, to describe the function, during cooling, the indoor unit is cooled by operating the outdoor unit (1) and indoor unit (2).
The ventilation fans ('?a) and (7b) provide ventilation, and the air purifier (8) removes dust from the room. During heating, the refrigerant circuit is switched to the heating cycle using a four-way valve, etc., and the indoor unit (2
) is used as the condensing side and the outdoor unit (1) is used as the evaporating side to heat the room. At this time, for total air conditioning, use the ventilation fan (7a)
, (7b), air purifier (8), humidification unit (9)
must also be driven at the same time. Also, the ventilation fan ("a)? (71)) and air purifier (8) are kept in operation during the interim period as well.

[Problem that the invention seeks to solve]

Conventional direct expansion multi-air conditioning systems can only perform cooling and heating as described above, but in order to achieve total air conditioning,
Requires a separate ventilation fan, air purifier, humidifier, etc.
Controlling each air conditioning functional component is complicated, system costs are high, and floor space is taken up.

There were problems with energy loss due to exhaust, room design, etc.

This invention was made in order to solve the problems listed in item L, and provides an air conditioning system that can be used in conjunction with an indoor unit for air conditioning to perform total air conditioning that performs ventilation, dust removal, heat recovery, and humidification. The purpose is to obtain.

[Means for solving problems]

In the air conditioning system according to the present invention, at least four of the plurality of indoor units connected to the outdoor unit and refrigerant piping are dedicated indoor units for outdoor air processing and have functions of ventilation, dust removal, heat recovery, and humidification. 0 [Operation] The air conditioning system of the present invention has the same outdoor unit as
The indoor unit for cooling/heating and dust removal is connected to the indoor unit dedicated to outdoor air processing, which is connected by the same refrigerant piping.Outside air intake, indoor exhaust,
Dust removal from outside air, heat recovery from indoor exhaust, or humidified outside air (when in room II), temperature, humidity, dust concentration inside the room,
Control co-co2 concentration and realize total air conditioning.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure (11 is the outdoor unit, (2) is the high-performance filter (
The indoor i, (31 is a refrigerant pipe, (4) is an indoor unit dedicated to outdoor air processing, and is configured as shown in Figure 2. A) is a high-performance filter for removing dust contained in outdoor air, ■ is a total heat exchanger unit, (24a) is a blower for sucking in outdoor air and discharging it indoors, (to) is an outdoor unit (1 )
The evaporator is connected to the evaporator by a refrigerant pipe (3) and has a throttling device (25a). During heating, the evaporator is used as a condenser by switching the refrigerant circuit using a four-way valve (not shown) or the like. (1) is a humidifier that humidifies the air that has passed through the condenser (e) during heating;
(Foundation) is an outdoor air outlet for discharging treated outdoor air indoors, and the intake path (A) is configured from the above. (2) is an indoor air intake port, the wire is a medium-performance filter that removes dust from indoor air, (2) is a total heat exchanger unit,
(24b) is a blower that sucks indoor air and releases it to the outdoors, and Zeng is an indoor air outlet and an exhaust path from IC1 or higher @)
The total heat exchanger unit 11 is provided between the intake passage (A) and the exhaust passage (A), and exchanges heat between the air flowing through the intake passage (A) and the exhaust passage (A).

f5) Id is a duct connected to the outdoor air outlet of the outdoor air processing indoor unit (4), and is connected to the indoor unit (2) through a branch duct) Oa). (6) The indoor unit (4
) is connected to the indoor air suction port of ) with a duct) (6a). (B) is the outside wall, and the indoor unit (4) dedicated to outdoor air processing is
The outdoor air inlet (goods) and indoor air outlet (to) are as follows:
dak) (loa) and (lob) K, this outer wall α
0@, which passes through 9 and communicates with the outside air, is the ceiling material.

Next, talking about the effect, the outside air comes from the outdoor air intake port.
) The air is sucked into the outdoor air processing indoor unit (4), removed by a high-performance filter (a), and then flows into the total heat exchanger. On the other hand, indoor air is sucked in from the indoor air suction grille (6), passes through the duct (6a), and is sucked into the outdoor air processing indoor unit (4) from the indoor air outlet window.

Then, dust is removed by medium-performance filter 4, and it flows into the total heat exchanger unit (to), where heat is exchanged between outdoor air and indoor air. 1), it passes through the duct (mob) and is released outside the outer wall (b). In addition, the outdoor air is cooled (heated during heating) by the blower (24a) in the evaporator (condenser in the case of heating), and then passed through the outdoor air outlet (5) and the duct (5) and (5a). Needless to say, the evaporator of the indoor unit (2) (during heating, the condensation ra) is released to the next side, and during heating, the humidified air is released from the humidifier (to). - Blade indoor unit In (2), at the same time as cooling or heating operation, the built-in high-performance filter also performs dust removal operation of the indoor air.The indoor unit (4) dedicated to outside air processing performs dust removal, heat recovery, cooling or heating, and humidification ( At the same time, the heated outside air (during heating) is also discharged into the room from the outlet of the indoor unit (2), providing total air conditioning of the room.

(Effects of the Invention) As described above, 1. According to the present invention, at least one of the plurality of indoor units connected to the outdoor unit with refrigerant piping is dedicated to outdoor air processing with ventilation, dust removal, and heat recovery functions. Since it is an indoor unit, total air conditioning is possible, and it is inexpensive and energy-saving.
This has the effect of providing an air conditioning system that is space-saving and has a good design.

[Brief explanation of the drawing]

Figure 1 is a diagram of a direct expansion multi-air conditioning system showing an embodiment of the present invention;
FIG. 3 is a diagram of a conventional direct expansion multi-air conditioning system. In the figure, (1) is an outdoor building, (2) is an indoor unit, (3) is a refrigerant pipe, (4) is an outdoor unit dedicated to outdoor air processing, (5) and (5a)
) is the communication duct with the indoor unit (2), (6) is the suction grill, (7a), ('Fb) are the ventilation fans, (8) is the air purifier, (9) is the humidifying unit, (10a), ( (lob) is the intake/exhaust duct, (a) is the high-performance filter, (to) is the total heat exchanger, (24a), (z4b) is the blower,
(c) is the evaporator 5 (condenser), (e) is the humidifier, α power is the outer wall, and (2) is the ceiling material. Note that the same reference numerals in the figures indicate the same or similar parts. Ta :jO; Alliance unit

Claims (1)

[Claims] An outdoor unit consisting of a compressor, condenser, etc., and multiple indoor units consisting of an evaporator throttling device, etc. are connected via refrigerant piping to form a refrigerant cycle, and air conditioning is performed in the room. An air conditioning system characterized in that at least one of the plurality of indoor units is configured as an outside air processing unit having ventilation, dustproofing, and heat recovery functions.