JPH04116329A - Air conditioner - Google Patents

Abstract

PURPOSE:To provide an air conditioner capable of energy saving operation by providing control means for controlling the amount of air of a fresh air suction fan following the maximum of CO2 concentration in each room to be air conditioned detected by a sensor. CONSTITUTION:Once an indoor machine switch 27 is turned on into a cooling mode, air in each room 13 enters a suction inlet 2a of an indoor room 13 enters a suction inlet 2a of an indoor machine 2 after passage through an air duct 21 and removed in its dust by a high performance filter 2b. Thereafter, it is cooled by a heat exchanger 2c and blown out from a blow-off outlet 2f by a fan 2d. At this time, a fresh air processing exclusive machine 3 is simultaneously operated, and fresh air introduced from a suction inlet 4 is removed in its dust through a high performance filter 23 and is cooled by a heat exchanger 26 after passage through a whole heat exchanger 5 and a fan 6a. Thereafter, it enters a processed fresh air intake port 2e from a blow- off outlet 8 and is distributed to an air amount matched to the capacity of an air flow regulator 12 after passage through an air duct 14, and is supplied to each room. Further, a CO2 concentration signal detected by a CO2 concentration signal 28 provided in each room to be air-conditioned is sent to a controller 17 and an inverter 19 for the fans 6a, 6b is controlled by arithmetic operation for control of the flow rate of the air and hence for energy saving operation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air conditioner used for air conditioning such as heating and cooling of hills.

[Conventional technology]

Figure 2 is a cross-sectional view, for example, of a conventional expansion air conditioning system that was not disclosed in Zebishi Electric's technical manico of outdoor air processing units and Al 3 Peno, and shows that one outdoor unit has multiple units. The indoor unit was connected with a dedicated outside air processing machine that had a built-in heat exchanger and was able to recover heat through refrigerant piping to perform heating and cooling, ventilation, dust removal, and heat recovery. It has an air volume commensurate with the floor space that can be air-conditioned by the outdoor unit, and is designed to supply a constant air volume indoors regardless of the number of indoor units in operation. For this reason, j
It is also a good idea to ventilate the room where the indoor unit is turned off by someone, and also to ventilate the room when heating, which goes against energy conservation.

In Figure 2, (1) is an outdoor unit consisting of a compressor, a heat exchanger on the non-use side, etc., and installed on the roof of a hill, etc.
2) is an indoor unit that is comprised of a user-side heat exchanger, a blower, a diaphragm, a high-performance filter (2b), etc., and is installed indoors in the ceiling. (3) is a dedicated outdoor air processing machine, as shown in Fig. 3, which includes an outdoor air intake + f4), a first filter ■, an outside air intake ITI blower (6a), a user side heat exchanger ■, and a humidifier ( 7) and an outdoor air outlet (8), an indoor air inlet (9), and a second filter (1).
0), is provided between the exhaust path B consisting of the indoor air blowing fan (6b) and the indoor air blowing t-1 (Il,), the intake path △ and the exhaust path 8, and performs heat exchange of the air passing through each. It consists of a total heat exchanger (5). Indoor unit (2)
The outside air processing dedicated machine (3) is connected to the outdoor unit (1) via a refrigerant pipe. (14), (14a,)
is the duct that connects the outdoor air processing unit (3) and each indoor unit (2) and its connecting parts, the building is the hill, and the vessel is the ceiling.

Next, the operation of the above-mentioned conventional device δ will be explained.

During cooling, the outside air processing machine (3) is operated in conjunction with the outdoor unit (1) and indoor unit (2) to cool, remove dust, and ventilate the inside of γ. During heating, the refrigerant circuit is switched to a heating cycle using a four-force valve or the like, 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. During this cooling or heating,
Regardless of the number of indoor units (2) in operation, the outdoor air processing unit (3) inherits the rated capacity operation and operates at full capacity until all indoor units (2) stop. Also, during cooling or heating, the outdoor air and indoor air are heated by a total heat exchanger (5).
During cooling, air that is cooler than the air temperature (in the evening) or air that is hotter than the outside temperature during heating is introduced into the indoor unit (2).

[Invention or problem to be solved]

The conventional direct expansion multi-air conditioning system is configured like the above-mentioned 6L, and there is a problem that ventilation and humidification are performed even in an unattended room that does not require air conditioning, resulting in energy loss. This invention was made to solve the above-mentioned problems, and it is possible to ventilate and humidify only the rooms that require air conditioning, and also to adjust the ventilation amount according to the CO2 concentration of each air-conditioned room. The purpose is to obtain an air conditioner that can perform more energy-saving operation by adjusting the air conditioner.

[Means to solve the problem]

The air conditioner according to the present invention includes an air volume controller that is provided in a duct that connects an indoor air outlet of an indoor unit and each air conditioned room, and that is provided corresponding to each air conditioned room, and that adjusts the air volume of the air conditioner. A control means is provided for detecting the ratio of the capacity of the used air volume controller to the capacity of the air volume controller and controlling the air volume of the outside air suction blower of the outside air processing dedicated machine according to this ratio,
A sensor for detecting the CO□ concentration in each air-conditioned room and a control means for controlling the air flow rate of the outside air intake blower according to the maximum value of CO, a degrees in each air-conditioned room detected by this sensor are provided. It is something that

[Effect]

In this invention, an air volume regulator is provided in the duct connecting the indoor unit and each air-conditioned room according to the size of each air-conditioned room, and the ratio of the used capacity to the total capacity of each air volume regulator is The air flow rate of the outside air suction blower in the outside air processing machine is controlled according to this ratio, and the blow rate of the outside air suction blower is Air volume is controlled.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. 1st
The figure shows the configuration of an air conditioner according to an embodiment of the present invention, in which (1) is an outdoor unit, (2) is an indoor air intake port (2a),
High performance filter (2b), heat exchanger (2C), blower (
2d), treated outside air intake ILI (2e) and blowout 0 (2
f), (3) is an indoor unit with outdoor air intake D (4)
, the high-performance filter draws indoor air into an air intake path consisting of a total heat exchanger (5), an outside air intake blower (6a), a heat exchanger ■, a humidifier (7), and an outdoor air blower D (8). D
(9), medium performance filter 00), total heat exchanger (5), indoor air exhaust blower (6b), and indoor air outlet (II
) consists of 1 [external air processing machine that connects air passage B, (
1 is indoor 1 (2) Air volume adjustment provided at which connection (14a) in each room (13) in the duct l-(14) that communicates between the air outlet (2f) and each room (air-conditioned room) (1C) 3
．． The switch installed in each room (13) to operate the (+5) LJ air volume controller 02) and set the room temperature.
16) is the controller for the indoor unit (2), (17) is the controller for the outdoor air processing machine (3), (+8) is the inverter for the indoor air fan (2d), and (19) is the outdoor air processing machine (3).
) blower (6a), (6b) inverter, (C)
QO is a control means composed of a controller (17) for the outside air processing machine (3) and an inverter (19) for the blowers (6a) and (6b) of the outside air processing machine (3), and QO is the connection of the duct (14). From the part (14a) to each room (the air outlet to the bone, and from the part (14a) to the indoor air inlet of the indoor unit (2)
2a) is the return air duct that communicates with be.

Next, I will explain one operation. When the switch for the indoor unit is turned on and the cooling mode is set, the air in each room (building) passes through the air intake port (2a,) of the indoor unit (2).
The air enters the air, is removed by a high-performance filter (2b), cooled by a heat exchanger (evaporator) (2c), and then blown out (2f) by a blower (2d).At this time, a dedicated outside air processing machine ( 3) is also operated at the same time, and the outside air taken in from the suction port 1 (4) is removed by a high-performance filter, passes through the total heat exchanger (5), the blower (6a), and is then transferred to the heat exchanger (evaporator).
It is cooled by The air volume is distributed to each room (la) according to the capacity of the air volume regulator (12) installed in each pair, and is supplied to each room (la).A part of the return air is sucked in from the duct (1) to the suction D (2a), (9)
, the medium-performance filter (10) is passed through, the total heat exchanger (5) is used to exchange heat, and the indoor air is blown out by the blower (6b).
l (11) and released to the outside. Also, during heating, by switching the four-way valve (not shown) of the outdoor unit (11), the heat exchanger (2c) of the indoor unit (2) and the outdoor air processing unit (3),
(2) acts as a condenser, and the outside air and indoor air humidified by the humidifier (7) are humidified by the heat exchanger (2c) of the indoor unit (2) and blown into the room. On the other hand, air conditioning poetry (
At the beginning of operation 11J, if some switches (19) of the air volume regulator (+3) are off, that is, if there are no people in some rooms (1 and 3), the Then, the controller (16) for the indoor unit (2) calculates the formula: total air volume controller capacity x indoor unit rated air volume fl), and uses the result to connect the indoor fan (2d). inverter (1
8) to control the air flow rate of the blower (2d) according to the result of equation (1), and at the same time send it to the controller (17) to control the air flow rate of the blower (2d) according to the result of equation (1). Calculate the capacity of the total airflow controller capacity x the rated airflow of the outside air processing machine (1), and also calculate the CO2e4 degree signal detected by the CO7 concentration sensor (support) installed in each air-conditioned room to the controller (
16) to the controller (17), and the controller (]?) or × α (2) (1, ji
! -Lα is the safety factor Jl - a value that takes into account equipment errors and other factors), and the controller (17) calculates the inverter (19) for the blower (6al (6b)) to control the inverter (19) for each blower ( 6a) and (6b) are controlled according to the result of equation (2).For this reason, each room (1
The amount of outside air intake can be controlled according to the usage status of the vehicle and the maximum value of CO26 degrees, making it possible to perform energy-saving operation and low-noise operation.

Although the above embodiments have been described with respect to a direct expansion air conditioning system, the same effect can be achieved also with a hydraulic system.

〔Effect of the invention〕

As described above, according to the present invention, an air volume regulator is provided in the duct connecting the indoor unit and each air-conditioned room, and a CO and 6 degree sensor is installed in each air-conditioned room, so that the usage of the air volume regulator is Since the amount of outside air intake is controlled according to the maximum CO3 concentration in each air-conditioned room, it is possible to provide just the right amount of air conditioning without having to air-condition unattended rooms, resulting in energy-saving operation. I can do what I want to do.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an air conditioner according to an embodiment of the present invention, FIG. 2 is a 4f7i diagram of a conventional air conditioner, and FIG. 3 is a front view of a conventional outside air processing machine. In these figures, (1) is the outdoor unit, (2) is the indoor unit, (2a) is the indoor air inlet, (2C) is the user side heat exchanger, (2d) is the blower, and (3) is the outside air treatment. Dedicated machine, (4
) is an outdoor air intake port, (5) is a total heat exchanger, (6a) is an outside air intake blower, (6b) is an indoor air exhaust blower,
(7) is a humidifier, (8) is an outdoor air outlet, (9) is an indoor air intake "-1, (11) is an indoor air outlet, (Ia
(14) is the duct, (16) and (17) are the controllers for the indoor unit and the outdoor air processing unit, respectively, (■) is the heat exchanger, (2) is the CO
□Concentration sensor (A) is the intake path, (B) is the exhaust path,
(C) is the cocitrol (17) for the outside air processing machine (3) and the blower for the outside air processing machine (3), (6a, ), (6b)
This is a control means composed of an inverter (19). In addition, the same reference numerals in the figures indicate the same or (4) and corresponding parts.

Claims (1)

[Claims] (1) An outdoor unit having a compressor and a non-use side heat exchanger,
An indoor unit that has an indoor air inlet, a user-side heat exchanger, and a blower communicates with each air-conditioned room, and an outdoor unit that communicates with an outdoor air inlet, an outside air intake blower, a user-side heat exchanger, a humidifier, and an indoor unit. An intake path consisting of an air outlet, an indoor air inlet communicating with each of the air-conditioned rooms, an indoor air exhaust blower, an exhaust path consisting of an indoor air outlet, and a total heat exchanger that exchanges heat between the intake path and the exhaust path. In an air conditioner in which a refrigeration cycle is formed by connecting a dedicated outside air processing machine with a detects an air volume controller installed corresponding to the air-conditioned room to adjust its air volume, and the ratio of the used air volume controller to the capacity of all air volume controllers;
A control means is provided to control the air flow rate of the outside air intake blower of the outside air processing dedicated machine in accordance with this ratio, and a sensor is provided to detect the CO_2 concentration in each of the air-conditioned rooms, and the highest concentration among them is provided. An air conditioner characterized by being provided with a control means for controlling the amount of air blown by an outside air suction blower according to the value.