JPH0539945A - Air conditioner - Google Patents

Abstract

PURPOSE:To keep an amount of circulating air within a natural evaporating humidifier constant, make a proper humidifying performance of a humidifying element and get an accommodation for a dew formation during a cooling operation. CONSTITUTION:A damper 11 for controlling an opening or a closing air flow at an air inlet 9 and an air discharging port 10 for a natural evaporating humidifier is provided. Opening or closing control for the damper is carried out in such a way as a blowing air temperature for a heat exchanger is detected in the case of cooperating with an operation of a humidifier so as to judge if a humidifying is required.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure in which a natural evaporative humidifier for preventing indoor air from drying is installed and air is introduced into and discharged from the humidifier in an air conditioner for cooling and heating.

[0002]

2. Description of the Related Art An example of a conventional air conditioner with a humidifier is shown in FIG.
Will be explained.

A natural evaporative humidifier for humidifying the air ventilated by a blower 6 for a humidifier by utilizing a humidifying element 5 having a capillary phenomenon is a heat exchanger of an air conditioner 1 comprising a blower 2, a heat exchanger 3 and the like. An inlet 9 and an outlet 10 for circulating air are provided and connected on the air downstream side of the container 3.

During heating, the air warmed by the heat exchanger 3 is
The air is blown into the humidifier 4 from the inlet 9 by the blower 6 with a built-in humidifier, humidified by the humidifying element portion, and returned to the inside of the air conditioner from the discharge 10 to humidify during the heating operation.

[0005]

The natural evaporative humidifier has the following problems.
If the amount of air passing through the humidifying element exceeds the humidifying capacity,
Since the humidifying element dries, the effect of cleaning the surface of the humidifying element by running water is lost, impurities and hardness components contained in water accumulate in the humidifying element, reducing the speed of sucking water and reducing the humidifying ability. The problem arises.

However, in the air conditioner, as shown in FIG. 5, on the air downstream side of the heat exchanger, the speed of the air blown from the blower is not uniform, so that the air is introduced 9 into the humidifier 9 and discharged 10. There is a problem in that the humidifying ability is lowered because the mounting position of is affected by the blown air velocity and the amount of circulating air into the humidifier becomes a predetermined amount or more.

Next, in the apparatus as shown in FIG. 4, when the cooling operation is performed, the air downstream of the heat exchanger is cold air, and even if the blower in the humidifier is stopped, the entire humidifier is cooled. Will be cooled. For this reason, it is necessary to prevent dew condensation on the entire humidifier and air introduction / exhaust device, and the heat insulating material is attached to the entire outer surface, which makes the price high.

The humidifier is originally used only during heating, and is a problem that occurs because the air introduction and discharge passages are open even during cooling when not in use. or,
The humidifying element also becomes dirty when exposed to air, which shortens the life of the humidifying element.

[0009]

SUMMARY OF THE INVENTION The present invention is directed to introducing air into a humidifier installed on the air downstream side of a heat exchanger of an air conditioner,
A damper that can be opened and closed is attached to the outlet so that the structure is not affected by the speed of the air blown from the blower of the air conditioner.

Further, the damper is electrically linked to the operation of the blower of the humidifier so that the damper is opened when the humidifier is used and closed when it is not used.

Alternatively, the temperature of the air passing through the heat exchanger is detected, and a temperature higher than a set temperature that requires humidification (for example, 35
Open the damper only when (° C).

[0012]

[Function] The air inlet / exhaust damper to the humidifier opens when humidifying operation is required, and at that time, the damper itself
Since it is not affected by the wind speed of the air blown from the blower of the air conditioner, the amount of air into the humidifier does not change depending on the mounting positions of the air inlet and outlet.

Further, since the damper is opened only when the blower of the humidifier is operating, the blowout temperature passing through the heat exchanger, or the preset temperature for heating operation, the damper is opened during the cooling operation. Close to prevent cold air from entering the humidifier.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS.

The air conditioner 1 including the blower 2 and the heat exchanger 3 performs cooling or heating operation. When the natural evaporative humidifier 4 that humidifies the air ventilated by the air blower 6 for humidifiers by using the humidifying element 5 having a capillary phenomenon as a humidifier for humidifying during heating,
On the air downstream side of the heat exchanger 3 of the air conditioner 1, introduction 9 and discharge 10 of circulating air to the humidifier 4 are provided and connected.

During heating, the air warmed by the heat exchanger is introduced into the inside of the humidifier 4 from the inlet 9 by the blower 6 with a built-in humidifier, is humidified by the humidifying element portion, and is again discharged by the outlet 10.
By returning to the inside of the air conditioner, humidification is performed during heating.

Here, the passing wind speed of the air that has passed through the heat exchanger largely differs depending on the position of the blower 2, but the dampers 11 provided at the inlet 9 and the outlet 10 block the dynamic pressure of the passing wind speed. Because it plays a role, the amount of circulating air in the humidifier is not affected by the dynamic pressure.
It is possible to set a constant air volume determined by the humidifier blower 6.

By mounting the damper 11 in this way, there is no restriction on the introduction position of air to the humidifier and the mounting position of the discharge port, and moreover, since the circulating air volume in the humidifier is constant, the humidifying element dries. It is possible to prevent the impurities and hardness components in the water from being accumulated in the humidifying element due to excessive heating, and prevent the deterioration of the humidifying ability.

Further, since the damper 11 is openable / closable, the damper is closed when cooling is not necessary during humidification to prevent cold air from entering the humidifier. As a result, it is possible to omit the heat insulating treatment that has been applied to the entire humidifier to prevent dew condensation, and it is possible to provide a low-cost humidifier.

On the other hand, by electrically interlocking the damper 11 with the operation of the blower of the humidifier as shown in FIG. 2, the damper can be easily opened when the humidifier is used and closed when it is not used.

Alternatively, as shown in FIG. 3, the temperature of the air passing through the heat exchanger is detected to discriminate the heating operation requiring humidification, and the damper 11 is energized when the temperature is higher than a set temperature (for example, 35 ° C. or higher). , Open.

With these, the air blown into the humidifier is
Since it is not performed when humidification is not necessary,
Contamination due to contact with air can be prevented, and the life of the humidifying element can be extended.

[0023]

EFFECTS OF THE INVENTION By installing an air flow opening / closing device at the air inlet / outlet of the humidifier, a constant amount of air is supplied to the humidifying element in the humidifier without being affected by the wind speed of the blower of the air conditioner. Can be sent. This prevents excess air in the humidifying element and prevents the element from drying. That is, it is possible to prevent the accumulation of impurities and hardness components in water in the humidifying element, and prevent the deterioration of the humidifying ability.

Further, during cooling without humidification, since the cool air is not sent into the humidifier, the entire humidifier is not cooled. In other words, it is not necessary to provide heat insulation for preventing dew condensation on the entire humidifier, and it is possible to provide a low-cost humidifier.

On the other hand, the air blown into the humidifier should be limited when humidification is required, that is, when the humidifier blower is operated, or when the temperature of the air blown through the heat exchanger is high and the heating operation is performed. As a result, the humidifying element is prevented from being unnecessarily exposed to the air and becoming dirty, and the humidifying element has a long life.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an air conditioner with a humidifier according to an embodiment of the present invention.

FIG. 2 is a diagram showing opening / closing control of air introduced into a humidifier according to an embodiment of the present invention.

FIG. 3 is a diagram of the same opening / closing control.

FIG. 4 is a configuration diagram showing a conventional air conditioner with a humidifier attached thereto.

FIG. 5 is a partial plan view of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Air conditioner, 2 ... Blower, 3 ... Heat exchanger, 4 ... Humidifier, 5 ... Humidification element, 6 ... Humidifier blower, 7 ... Water receiver, 8 ... Drain pan, 9 ... Air introduction device, 10 ... Air discharge device, 11 ... Opening / closing damper, 12 ... Blowout temperature detector.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Eijiro Kataoka 390 Muramatsu, Shimizu City, Shizuoka Prefecture, Hitachi Shimizu Plant (72) Inventor Mitsuo Seki 390 Muramatsu, Shimizu City, Shizuoka Hitachi Shimizu Engineering Co., Ltd. Within

Claims (3)

[Claims] 1. A humidifier-equipped air system in which a device for introducing air into and returning a natural evaporative humidifier having a blower is connected downstream of the heat exchanger of an air conditioner including a blower, a heat exchanger, etc. In the air conditioner, an air flow switch is attached to the inlet / outlet of the air introducing / returning device. 2. An air conditioner equipped with the opening / closing device for introducing air according to claim 1, which is interlocked with the operation of a blower for introducing air of a natural evaporation type humidifier. 3. An air conditioner equipped with the opening / closing device for introducing air according to claim 1, wherein the opening / closing device is opened only when the temperature of the heat-exchanged blown air is higher than a preset temperature.