JPH0351645A - Operation control method for moistening device - Google Patents

Abstract

PURPOSE:To enable automatic regulation of an indoor temperature by a method wherein intermittent drive of a motor capable of running forward and reversing a damper for regulating a ratio between an indoor and an outdoor air amount is controlled according to the running state of a pump for spray. CONSTITUTION:Operation and the stop of a water spray pump 8 serving as a moistening device are controlled by means of a sensor to detect humidity of indoor air. The position of a damper 13 is varied so that a ratio between an amount of intake air through an indoor air suction port 9 and that through an open air suction port 10 is controlled with the aid of a motor 14 capable of being running forward and reversed. The motor 14 is intermittently driven according to the running state of the pump 8. Namely, when humidity of indoor air is below a set value, running of the pump 8 is continued until it attains a set value, and with the damper 13 is moved in a direction in which the opening air is throttled, humidity of indoor air is increased. When indoor humidity is high, the pump 8 is stopped for a given time, and the damper 13 is moved in a direction in which the open air is introduced. This method enables automatic regulation of indoor humidity.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Field of Application> The present invention relates to a method for controlling the operation of a humidifier that humidifies air within a factory and performs simple cooling by introducing outside air.

[Prior art] In textile factories, etc., it is necessary to humidify the air inside the factory, and for this purpose, conventional humidifiers have a structure that sucks indoor air, humidifies it by passing it through a water spray chamber, and then blows it back into the room. It is used.

The temperature of the air inside a factory is usually higher than the outside air temperature due to heat generated by motors and the like, and it is not uncommon for the temperature inside the factory to rise to about 35 to 38°C, especially in the summer. Moreover, as mentioned above, the air inside the factory is humidified and the humidity reaches 70 to 80%, making the working environment of textile factories extremely poor in the summer. If the outside air is humidified and blown into the factory in such a case, even if the outside air is 32 degrees, the temperature will drop by about 4 degrees due to the latent heat of evaporation of the sprayed ice during humidification, so the air will not blow into the factory. The temperature of the air will be around 28 degrees, increasing the cooling effect.

However, if 100% outside air is introduced to increase the cooling effect, the capacity of the humidifier must be increased to humidify the dry outside air to the desired humidity, which increases equipment and operating costs.

Therefore, the humidifier is equipped with an indoor air intake port and an outside air intake port, as well as a damper that adjusts the ratio of the indoor air to the outside air that is inhaled. Is this a structure that increases humidity and draws in outside air when the air inside the factory is sufficiently humidified and the temperature is high? W machine is used.

<<Problems to be Solved by the Invention>> In the humidifier that enables simple cooling by introducing outside air as described above, the operation of the damper that adjusts the ratio of indoor air to outside air introduced has conventionally been performed manually. However, manually adjusting the damper is complicated, especially at the start of work when the humidity in the factory changes over time, and there are problems in that it is difficult to set the damper to the optimal position. In order to solve this difficulty, sensors measure the temperature and humidity inside the factory as well as the outside temperature and humidity, and from these detected values a microcomputer calculates the optimal opening degree of the damper, which controls the position of the damper. There are possible ways. However, such a method has the disadvantage that the equipment becomes very expensive, increasing the financial burden on the user.

Therefore, this invention focuses on the operation of a water spray pump for humidifying the air, and aims to provide a means for automatically controlling the ratio of indoor air and outside air introduced using this operation.

<<Means for Solving the Problems>> The operation control method of the present invention has a water spray chamber 5 for humidifying passing air inside the casing l, an indoor air intake port 9 that opens into the factory, and an indoor air intake port 9 that opens into the factory. an outside air intake port 10 that opens to;
This humidifier is used in a humidifier equipped with a damper 13 that controls the ratio of air taken in from the indoor air intake port 9 and the outside air intake port 10, and an air outlet 2 that sends humidified air into the factory.

The damper 13 usually has a structure that changes the opening degree of the air passages of the suction ports 9 and 10 by swinging or sliding motion, but it is not necessarily limited to such a structure.
Of course, the structure may include two or more dampers as necessary.

The damper l3 of the humidifier is powered by a motor 14 that can rotate in forward and reverse directions.
The damper drive motor 14 is driven intermittently in connection with the stoppage of the pump 8 for supplying spray water to the water spray chamber 5.

For example, when the water spray bomb 8 continues to operate for a predetermined period of time, the damper drive motor 14 is intermittently driven at each predetermined period to move the damper 13 in a direction that throttles the outside air. Further, when the water spray pump 8 continues to be stopped for a predetermined period of time, the damper drive motor 14 is intermittently driven in the opposite direction every predetermined period to move the damper 13 in a direction that throttles the indoor air.

The above-mentioned predetermined period can be set using a setting machine, and can be set to an appropriate value by taking into account the volume of the factory, the capacity of the humidifier, etc.

<<Operation>> The water spray pump 8 of the humidifier is controlled to stop operating based on the detected value of the humidity sensor that detects the humidity of the air in the factory. That is, when the air in the factory reaches the set humidity, the operation of the water spray pump 8 is stopped, and when the humidity of the air in the factory is lower than the set value, the water spray pump 8 is operated. Therefore, if the water spray pump 8 continues to operate for a predetermined period of time, it means that the air in the factory has not reached the set humidity. Circulation is increased and humidity is increased. On the other hand, if the water spray pump 8 is stopped for a predetermined period of time, it means that the humidity of the air in the factory is sufficiently high. It is possible to maintain the set humidity even if the humidity is introduced. In this case, the damper 13 moves in a direction to increase the amount of outside air, thereby increasing the cooling effect of introducing outside air. Since the damper 13 moves intermittently at predetermined intervals, hunting in the control system can be avoided.

"Example" The figure shows one embodiment of the invention.

In Fig. 1, which schematically shows the structure of a humidifier, 1 is a housing of the humidifier, 2 is a ventilation opening, 3 is a ventilation fan, 4 is an eliminator, 5 is a water spray chamber, and 6 is an upper part of the water spray chamber. 7 is the water pipe to the water spray nozzle, 8 is the water spray pump, 9 is the indoor air intake port, 1o is the outside air intake port, l
1 is a water tank formed at the bottom of the water spray chamber, 12 is a water tank II
I3 is a damper arranged between the indoor air intake port 9 and the outside air intake port 1o;
is the damper drive motor, 15 is the reducer, and 16 is the damper l3.
The moving shafts 17 and 18 are rim switches for detecting the swinging end of the damper 13. Damper drive motor 1
Reference numeral 4 uses a capacitor motor capable of forward and reverse rotation, which is connected to a damper drawing shaft 16 via a deceleration gear 15, and by rotating the damper drive motor 14 forward or reverse, the direction in which the damper 13 squeezes the outside air is determined. Or swing in a direction that restricts indoor air. Indoor air intake port 9 or outside air intake port 1
The air sucked in from 0 passes through a water spray chamber 5, is humidified, excess water droplets are removed by an eliminator 4, and is blown into the factory through an air outlet 2 by an air blower fan 3. The air outlet 2 is provided with a rectifying blade 19 for controlling the direction of air outflow.

Figure 2 shows an example of a control circuit for carrying out the method of the present invention, where HU is a relay controlled by a humidity sensor, TH is a relay controlled by a temperature sensor, and hu and th are the relays controlled by a humidity sensor. Contact point, P is the drive motor of water spray bomb 8, T1 and T2
is a timer, L1 and t are its contacts, M is a damper drive motor, and lsI and es2 are the contacts described above or similar. Timers T and T2 are usually called twin timers that have time-limited opening/closing contacts, and when the timers are energized, the contacts 1, , 1! repeats a timed operation and a timed return. The H side of the contact hu of the temperature sensor relay is a contact that comes into contact when the humidity is high, the L side is a contact that comes into contact when the humidity is low, and the L side is a normally closed contact.

Further, the H side of the contact th of the temperature sensor relay is a contact that comes into contact when the factory temperature is higher than a set temperature, the L side is a contact that comes into contact when it is lower, and the L side is a normally closed contact. When the inside of the factory reaches a temperature that requires cooling, the temperature sensor relay TH operates and switches the contact th to the H side.

In the above control circuit, the contact hu of the humidity sensor relay
is on the L side, that is, when the humidity in the factory is lower than the set humidity,
The motor P of the water spray pump is driven, and at the same time the timer T,
is energized. When timer TI is energized, its contact t1
repeats the timed operation and timed return as shown in Figure 3(a). In other words, after the bomb 8 starts operating, the contact point is removed m hours later? , is turned on for n1 hours, and the damper drive motor 14 moves the damper 13 by a certain angle (for example, 5 degrees > tS) in the direction of squeezing the outside air.Then, after waiting again for m, the water spray pump 8 continues to operate. If so, the timer contact 1 is closed again for the set time n1, and the damper l3 further swings in the direction of restricting the outside air.

On the other hand, when the contact of the humidity sensor relay HU is in contact with the H side, that is, when the humidity of the air in the factory is higher than the set humidity, the timer T2 is activated. The contact point t2 of the timer is as shown in FIG. 3(b).
The same standby and contact as in FIG. 3(a) are repeated, and the damper drive motor 14 is intermittently oscillated for a set time n■ every predetermined period m2 in the direction of squeezing the indoor air.

Further, when the damper l3 completely closes the outside air intake port 1o, the contact point es of the rimming switch 17
+ opens and the damper drive motor 14 no longer rotates even if the timer contact t1 contacts.

Furthermore, when the indoor air intake port 9 is completely closed,
Even if contact es2 of limit switch 18 opens and timer contact t2 contacts, damper drive motor 14 no longer rotates.

According to this kind of control, if the humidity of the air inside the factory does not reach the specified humidity even when operating with outside air completely closed, or when the humidity inside the factory does not reach the specified humidity even when operating with 100% outside air intake, Unless the humidity exceeds the humidity, the water spray pump 8 repeats operation for a predetermined period of time and stop for a predetermined period of time, and the humidifier is operated in a stable state with the damper opening corresponding to this. .

According to the invention described above, it is possible to obtain a humidifier that automatically sets the introduction ratio of indoor air and outdoor air to the optimum ratio, and with a simple structure and control, it is possible to obtain an optimal humidifier. You can get a humidifier that does both air conditioning and cooling. Not only does this eliminate the need for complicated manual damper operations, but
It is possible to maintain the most comfortable working environment in the factory without placing an excessive economic burden on users. In addition, the structure in which a single damper that moves 13 times is provided between the indoor air intake port and the outside air intake port as shown in the illustrated embodiment has a small number of parts and a simple structure, and the damper can be adjusted easily. It also has the characteristic of being simple.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Figure 1 is a cross-sectional view schematically showing a humidifier, Figure 2 is a diagram showing a damper control circuit, and Figure 3 is a diagram showing a damper control circuit. It is an operation diagram of a timer. In the diagram, 1: Housing 2: Ventilation port

Claims (3)

[Claims] (1) An indoor air intake port (9) that opens indoors, an outside air intake port (10) that opens outdoors, a damper (13) that adjusts the ratio of intake air from both intake ports (9, 10), and water spray. Comprising a chamber (5) and a ventilation port (2), the indoor air intake port (9)
And the air taken in from the outside air intake port (10) is transferred to the water spray chamber (
5) In the method for controlling the operation of a humidifier in which the humidified water is passed through the air outlet (2), a motor (14) capable of forward and reverse rotation is provided to drive the damper (13), and this motor is connected to the water spray chamber. (5) A method for controlling the operation of a humidifier, characterized in that the humidifier is driven intermittently in relation to the operating state of the pump (8) for spraying water on the humidifier. (2) Claim 1 characterized in that the damper drive motor (14) is driven in a direction to throttle the outside air for a set time on the condition that the pump (8) is continuously operating for a predetermined period of time. The operation control method of the humidifier described. (3) Claim characterized in that the damper drive motor (14) is driven in a direction to throttle the indoor air for a set time on the condition that the pump (8) continues to be stopped for a predetermined period of time. 2. The method for controlling the operation of a humidifier according to 1 or 2.