JPH03225129A - Air conditioning device - Google Patents

Abstract

PURPOSE:To hold concentration of a perfume in a room at a specified value regardless of a fluctuation in a feed airflow of air conditioning air by a method wherein a feed amount of a perfume is controlled by means of the detecting value of at least one of a pressure in a feed duct and an air temperature in a room. CONSTITUTION:An airflow of air delivered with the aid of an air pump 40 is regulated by a mass flow controller 42 and guided to vegetable refined oil in a container 44 for bubbling. By the bubbling, phytoncide is dispersed and guided to an air conditioner through a feed pipe 45, and is fed in a room 10 togetherwith air conditioning air. A current responding to the detecting value of a pressure sensor 29 located in a feed duct 14 is outputted to a feed fan 18, and rotation thereof is controlled approximately proportionally in response to a current. Since when an airflow of feed air is increased, an air pressure in the room 10 is increased, by increasing an air bubbling amount, an amount of phytoncide fed in the room 10 is increased. When an airflow of feed air is low, an air bubbling amount is suppressed, and an amount of phytoncide fed to the room 10 is decreased.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air conditioner, and more particularly to an air conditioner that supplies fragrance such as phytoncide to a room along with air conditioning.

[Conventional technology]

In recent years, air conditioning equipment that maintains indoor comfort has become widespread, and air conditioning is now being installed not only in general buildings, department stores, and supermarkets, but also in some manufacturing plants. Air conditioning in manufacturing plants tends to focus on improving product quality rather than worker comfort, but in general buildings, the emphasis is on the comfort of occupants. Air conditioning equipment generally It is often controlled by factors such as humidity and airflow velocity, and the optimal environment when these factors are combined is already well known through years of experience and research.

However, in recent years, the diversification of values in general society has increased the momentum to pursue further improvements in the comfort of air conditioning. An air conditioner equipped with a fragrance supply device that supplies fragrance into a room together with conditioned air has also been proposed.

Conventionally, phytoncide supply devices (fragrance supply devices) that mix phytoncide into conditioned air mainly consist of an air pump that generates air, a mass flow controller that imbues the air, and a container that holds the plant essential oil that is the source of phytoncide. It has become. The phytoncide supply device uses a mass flow controller to flow the air sent out from the air pump! By adjusting and introducing the plant essential oil into the container and bubbling the plant essential oil, a high concentration of phytoncide is released into the atmosphere.

The phytoncide is then mixed with the conditioned air and supplied into the room via an air supply duct. At this time, the air flow rate adjusted by the mass flow controller is kept at a constant value regardless of the magnitude of the air supply amount.

[Problem to be solved by the invention]

However, the conventional phytoncide supply device
As shown in the figure, air bubbling is performed at a constant rate regardless of the size of the supply air volume, so variable air volume type air conditioners, which control the indoor temperature by varying the supply air volume, control the indoor phytoncide concentration. The disadvantage is that it cannot be kept constant.

The present invention was made in view of the above circumstances, and an object of the present invention is to provide an air conditioner that can maintain a constant fragrance concentration indoors.

[Means to solve the problem]

In order to achieve the above object, the present invention provides an air supply port installed indoors, an air supply duct connected to the air supply port, a pressure sensor that measures the pressure inside the air supply duct, and an indoor air supply port. a temperature sensor that measures temperature; an air volume adjustment device that controls the volume of conditioned air supplied into the room from the air supply port according to the detected value of the pressure sensor or the temperature sensor; a fragrance supply device that mixes fragrance into conditioned air;
In the air conditioner, the fragrance supply device determines the indoor fragrance concentration based on a detected value of at least one of the pressure in the air supply duct and the indoor temperature measured by the pressure sensor or the temperature sensor. It is characterized by controlling the amount of fragrance emitted so that it remains constant.

[Effect]

According to the present invention, the amount of fragrance released is controlled based on the detected value of at least one of the pressure in the air supply duct and the indoor temperature so that the indoor fragrance concentration is constant. Therefore, the amount of fragrance supplied to the conditioned air is controlled to an optimal value according to the air supply volume of the air conditioner, making it possible to maintain the indoor fragrance concentration constant. Thereby, even if the air flow rate of the conditioned air supplied indoors changes rapidly, the fragrance concentration in the room can be kept constant.

〔Example〕

Hereinafter, preferred embodiments of the air conditioner according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a system diagram of an air conditioner according to the present invention, which supplies phytoncide together with conditioned air indoors. The air conditioner shown in FIG. 1 that air-conditions a room 10 is air conditioner 1.
2, an air supply duct 14, a ventilation duct 16, an air supply fan 18, an exhaust fan 20, and a phytoncide supply device 22.
The main components are as follows. One end of the air supply duct 14 is connected to the air supply fan 18 of the air conditioner 12, and the other end is connected to the air supply fan 18 of the air conditioner 12.
It is connected to an air supply port 24.24 installed in the ceiling of 0. Further, on the path of the air supply duct 14, an air volume regulator 25 including a motor controller and a damper 25A is installed. The air volume regulator 25 is connected to a temperature sensor 27 installed in the room 10 via a signal cable 27A, and controls the amount of air supplied to the room 10 according to the detected temperature of the room 10. The temperature in the room 10 is controlled to be maintained at a set value.

In addition, a ventilation opening 26 is installed on the wall of the room 10,
One end of the ventilation duct 16 is connected to the ventilation port 26. An exhaust fan 20 is installed at the other end of the ventilation duct 16, and guides the air in the room 10 from the ventilation opening 26 to the ventilation duct 16, and further leads it to two sides: an exhaust duct) 16A and a ventilation duct) 16B. The exhaust duct) 16A is provided with a damper 28 like the supply air duct) 14, and the ventilation duct) 16B is connected to the mixing area 12A of the air conditioner 12. The mixing area 12A includes a ventilation duct) 16B and an outside air introduction duct 30.
In this mixing area 12A, the air conditioner 2 is connected to the ventilation duct) 16B and the outside air introduction duct 30, respectively.
The ventilation air introduced in step 2 is mixed with outside air.

The air conditioner 12 includes a filter 32, a cooler 34, and a heater 3.
After filter 32 removes impurities from the air, air conditioning is performed by exchanging heat with cooler 34 or heater 36. Furthermore, the air conditioning area 1 of the air conditioner 12
When the humidity of the conditioned air sent to 2B is lower than a predetermined value, the humidifier 38 supplies moisture to the conditioned air.

Furthermore, at this point, phytoncide is supplied from the phytoncide supply device 22 to the air-conditioned region 12B, and the phytoncide is mixed with the conditioned air.

The conditioned air mixed with phytoncide is supplied by the air supply fan 18
The air is supplied to the room 10 via the air supply duct 14 and the air supply ports 24,24.

Phytoncide is supplied as follows.

The phytoncide supply device 22 includes an air pump 40, a mass flow controller 42 that adjusts the flow rate of air, a phytoncide generation container 44, and the like. The phytoncide generation container 44 is filled with plant essential oil, and the air pump 4
The air sent out from the mass flow controller 42
By adjusting the flow rate and bubbling the oil into the plant essential oil in the container 44, highly concentrated phytoncide is released. Then, the diverged phytoncide is guided to the air conditioner via the phytoncide supply pipe 45 and supplied to the room 10 along with the conditioned air.

Next, control of phytoncide concentration in the air conditioner according to the present invention will be explained. Inside the air supply duct 14, there is a duct 1.
A pressure sensor 29 is installed to detect the pressure inside 4, and is connected to the inverter 31 via a signal cable 29A. The inverter 31 is connected to the air supply fan 18 via a signal cable 31A, and outputs a current (for example, 4 mA to 20 mA) according to the detected value of the pressure sensor 29 to the air supply fan 18. The rotation of the motor is controlled almost proportionally according to the current. Further, the supply air volume of the conditioned air supplied to the room 10 is controlled by the air volume regulator 2 based on the temperature of the room 10 as well as the control of the in-tweeter 31.
It is possible to reliably maintain the temperature in the t1 room 10, which is controlled by 5, at the set temperature.

Further, the current output to the air supply fan 18 is branched from the signal cable 31A, inputted to the converter 33 via the signal cable 33A, and the converter 33 converts the current into a voltage (for example, Ov to 5V). The converter 33 is connected to a mass flow controller 42, and the mass flow controller 42 controls the air pump 4 according to the converted voltage of the converter 33.
The amount of air supplied is adjusted by 0, and the amount of air and ring in the phytoncide generating container 44 is controlled. That is, the second
When the supply air volume increases as shown in the graph of the supply air volume, the air pressure in the room 10 increases and more air is exhausted. Therefore, in order to keep the phytoncide concentration in the room 10 constant, the amount of air bubbling is increased to increase the amount of phytoncide released, so that the amount of phytoncide supplied follows the increase in the amount of supplied air. Furthermore, when the amount of supplied air is small, the amount of air bubbling is suppressed to suppress the amount of phytoncide released, and the amount of phytoncide supplied to the room 10 is reduced. This makes it possible to keep the phytoncide concentration in the room 10 constant regardless of increases or decreases in the amount of supplied air.

In this way, the amount of phytoncide released from the air supply duct 1
Since the control is performed according to changes in the pressure inside the room 10, that is, the supply air volume, the phytoncide concentration in the room 10 can be kept constant even in the case of a variable air volume (VAV) type air conditioner.

In this embodiment, the bubbling amount of phytoncide is controlled based on the signal from the inverter 31, but the invention is not limited to this, and the air pump 40 may be controlled by manually inputting the detection signal from the pressure sensor 29 directly to the converter 33. You can also do this. Furthermore, the phytoncide supply device 22 may be controlled by the detection output of the temperature sensor 27. Furthermore, the fragrance is not limited to phytoncide, and other fragrances can also be supplied indoors.

〔Effect of the invention〕

As explained above, according to the air conditioner according to the present invention, in the variable air volume type air conditioner, the supply amount of fragrance is controlled by the detected value of at least one of the pressure in the air supply duct and the indoor temperature. ing. Thereby, the concentration of @ in the room can be kept constant regardless of fluctuations in the supply air volume of conditioned air.

[Brief explanation of drawings]

Fig. 1 is a system diagram of an air device according to the present invention that supplies phytoncide together with conditioned air indoors, and Fig. 2 shows the relationship between the air volume supplied into the room, the bubbling amount of the phytoncide supply device, and the indoor phytoncide concentration. FIG. 3 is an explanatory diagram showing the relationship between the conventional supply air volume, the bubbling amount of the phytoncide supply device, and the indoor phytoncide concentration. 10...Indoor, 12...Air conditioner, 14...Air supply duct, 22...Phytoncide supply device,
25...Air volume adjustment device, 27...Temperature sensor, 2
9...Pressure sensor.

Claims (1)

[Claims] An air supply port installed indoors, an air supply duct connected to the air supply port, a pressure sensor that measures the pressure inside the air supply duct, and a temperature sensor that measures the temperature inside the room. and an air volume adjustment device that controls the air volume of conditioned air supplied into the room from the air supply port according to the detected value of the pressure sensor or the temperature sensor;
An air conditioner comprising: a fragrance supply device that diffuses a fragrance into the air and supplies the fragrance to the conditioned air; An air conditioner that controls the amount of fragrance emitted so that the indoor fragrance concentration is constant based on at least one detected value of indoor air temperature and indoor air temperature.