JPH0723787B2 - Air conditioner - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an air conditioner, and more particularly to an air conditioner that supplies a fragrance such as phytoncide into a room together with air conditioning.

[Conventional technology]

2. Description of the Related Art In recent years, air-conditioning equipment that keeps indoors comfortable has become widespread, and air-conditioning has come to be performed not only in general buildings, department stores, supermarkets, etc. but also in some manufacturing plants. Air conditioning in manufacturing plants tends to focus on product quality improvement rather than worker comfort, but in general buildings the comfort of people in the room is emphasized. Air conditioners are generally controlled by factors such as temperature, humidity, and air velocity, and the optimal environment when these factors are combined is already well known through many years of experience and research.

However, the diversification of the sense of value of the general public in recent years has increased the motivation to pursue further comfort of air conditioning, and for example, in order to realize the refreshing atmosphere of the forest indoors, phytoncide etc. emitted from the forest An air conditioner equipped with a perfume supply device for supplying the perfume together with the conditioned air into the room has also been proposed.

Conventionally, a phytoncide supply device (perfume supply device) that mixes phytoncide with conditioned air is mainly an air pump that generates air, a mass flow controller that adjusts the flow rate of air, a container that holds plant essential oil that is a source of phytoncide, etc. It consists of The phytoncide supply device adjusts the flow rate of the air sent from the air pump by a mass flow controller, guides it to the plant essential oil in the container, and bubbles the plant essential oil (foaming) to diffuse a high concentration of phytoncide into the atmosphere. Then, this phytoncide is mixed with the conditioned air and supplied into the room through the air supply duct. At this time, the air flow rate adjusted by the mass flow controller is maintained at a constant value regardless of the magnitude of the supply air volume.

[Problems to be Solved by the Invention]

However, the conventional phytoncide supply device is
As shown in the figure, air bubbling is performed at a constant rate regardless of the size of the supply air volume.Therefore, in a variable air volume type air conditioner that controls the indoor temperature by varying the supply air volume, the indoor phytoncide concentration There is a drawback that cannot be kept constant.

The present invention has been made in view of such circumstances, and an object thereof is to provide an air conditioner capable of maintaining a constant fragrance concentration in a room.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention provides an air supply port installed in a room, an air supply duct connected to the air supply port, a pressure sensor for measuring a pressure in the air supply duct, and an indoor space. A temperature sensor for measuring the temperature, an air volume adjusting device for controlling the air volume of the conditioned air supplied to the room from the air supply port according to the detection value of the pressure sensor or the temperature sensor, and the perfume is diffused in the air. A fragrance supply device for mixing fragrance with conditioned air,
In the air conditioner provided with, the perfume supply device, based on at least one detection value of the pressure in the air supply duct and the room temperature measured by the pressure sensor or temperature sensor, the perfume concentration in the room The feature is that the amount of fragrance emitted is controlled to be constant.

[Action]

According to the present invention, the amount of perfume emitted is controlled so that the perfume concentration in the room becomes constant based on the detected value of at least one of the pressure in the air supply duct and the room air temperature. Therefore, the supply amount of the fragrance to the conditioned air is controlled to an optimum value according to the supply air volume of the air conditioner, and the fragrance concentration in the room can be kept constant. As a result, even if the supply air volume of the conditioned air supplied to the room changes rapidly, the fragrance concentration in the room can be kept constant.

〔Example〕

Hereinafter, preferred embodiments of an 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 that supplies phytoncide together with conditioned air into a room. The air conditioner shown in FIG. 1 for air conditioning the room 10 is an air conditioner 12
Centering on air supply duct 14, ventilation duct 16, air supply fan 18,
The main components are the exhaust fan 20, the phytoncide supply device 22, and the like. 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 ports 24, 24 installed on the ceiling of the room 10. Further, on the path of the air supply duct 14, a motor controller and an air flow rate adjuster 25 including a damper 25A are installed. The air flow controller 25 is
It is connected to the temperature sensor 27 installed in the room 10 via the signal cable 27A, and controls the supply air volume to the room 10 according to the detected temperature of the room 10 to keep the temperature of the room 10 at the set value. Control to lean.

A ventilation port 26 is installed on the wall of the room 10, and 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 to guide the air in the room 10 from the ventilation port 26 to the ventilation duct 16, and further to the exhaust duct 16A and the ventilation duct 16B. Exhaust duct 16A
A damper 28 is provided in the same manner as the air supply duct 14,
The ventilation duct 16B is connected to the mixing area 12A of the air conditioner 12. A ventilation duct 16B and an outside air introduction duct 30 are connected to the mixing area 12A, and in this mixing area 12A, the ventilation air introduced into the air conditioner 22 from the ventilation duct 16B and the outside air introduction duct 30 is mixed with the outside air. To do.

The air conditioner 12 is provided with a filter 32, a cooler 34, and a heater 36. After removing impurities in the air by the filter 32, heat is exchanged by the cooler 34 or the heater 36 to perform air conditioning. . Further, when the humidity of the conditioned air sent to the air conditioning area 12B of the air conditioner 12 is lower than a predetermined value, the humidifier 38 supplies water to the conditioned air. Also, at this point, the phytoncide is supplied from the phytoncide supply device 22 to the air conditioning area 12
Supply to B, Phytoncide mixes with conditioned air.

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

The supply of phytoncide is performed as follows. The phytoncide supply device 22 includes an air pump 40, a mass flow controller 42 for adjusting the flow rate of air, a phytoncide generation container 44, and the like. The phytoncide generation container 44 is filled with plant essential oil, the flow rate of the air sent from the air pump 40 is adjusted by the mass flow controller 42,
By bubbling the plant essential oil in the container 44 by bubbling, a high concentration of phytoncide is released. Then, this divergent phytoncide is guided to the air conditioner via the phytoncide supply pipe 45, and the indoor 10
Supply to.

Next, the control of the phytoncide concentration of the air conditioner according to the present invention will be described. A pressure sensor 29 that detects the pressure in the duct 14 is installed in the air supply duct 14, and is connected to the inverter 31 via a signal cable 29A.
The inverter 31 is connected to the air supply fan 18 via the signal cable 31A.
Is connected to, and outputs a current (for example, 4 mA to 20 mA) corresponding to the detection value of the pressure sensor 29 to the air supply fan 18,
The rotation of the air supply fan 18 is controlled almost proportionally according to the electric current. Further, since the supply air volume of the conditioned air supplied to the room 10 is controlled by the air volume adjuster 25 based on the temperature of the room 10 together with the control of the inverter 31, the room 10 can be reliably maintained at the set temperature. You can

Furthermore, the current output to the air supply fan 18 is the signal cable.
It is branched from 31A and input to the converter 33 via the signal cable 33A, and the converter 33 converts the current into a voltage (for example, 0V to 5V).
Convert to. The converter 33 is connected to the mass flow controller 42, and the mass flow controller 42 adjusts the amount of air supplied by the air pump 40 according to the conversion voltage of the converter 33, and controls the bubbling amount of the phytoncide generation container 44. That is, as shown in the graph of the supply air volume in FIG. 2, when the supply air volume increases, the atmospheric pressure in the room 10 increases,
More air will be exhausted. Therefore, in order to keep the phytoncide concentration in the room 10 constant, the air bubbling amount is increased to increase the divergence amount of the phytoncide, and the phytoncide supply amount follows the increase in the supply air volume. Further, when the amount of air supply is small, the amount of air bubbling is suppressed to suppress the amount of phytoncide divergence, and the amount of phytoncide supplied to the room 10 is reduced. This allows
It becomes possible to keep the phytoncide concentration in the room 10 constant regardless of the increase or decrease in the supply air volume.

In this way, the amount of phytoncide divergence
Since the control is performed according to the internal pressure, that is, the change in 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 the present embodiment, the bubbling amount of the phytoncide is controlled based on the signal of the inverter 31, but not limited to this, the detection signal of the pressure sensor 29 may be directly input to the converter 33 to control the air pump 40. You may Further, the detection output of the temperature sensor 27 causes the phytoncide supply device 22 to
May be controlled. Furthermore, the fragrance is not limited to Phytoncide, and other fragrances can be supplied indoors.

〔The invention's effect〕

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

[Brief description of drawings]

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

Claims (1)

[Claims] 1. An air supply port installed in a room, an air supply duct connected to the air supply port, a pressure sensor for measuring the pressure in the air supply duct, and a temperature sensor for measuring the room temperature. An air volume adjusting device for controlling the air volume of the conditioned air supplied to the room from the air supply port according to the detection value of the pressure sensor or the temperature sensor; and the fragrance is dispersed in the air to supply the fragrance to the conditioned air. In an air conditioner comprising a fragrance supply device, the fragrance supply device, based on at least one of the detected value of the pressure in the air supply duct and the room temperature measured by the pressure sensor or temperature sensor, An air conditioner characterized by controlling the amount of fragrance emitted so that the fragrance concentration in a room is constant.