JPH09133378A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner in which a surrounding air feeding rate is changed in response to a state of air in a plating rooms (such as plating mist, corrosion mist, inflammable vapor, humidity and temperature or the like) and an electrical consumption can be reduced in the case that a concentration of mist is low. SOLUTION: This air conditioner 1 is constructed to have a suction port 3 for sucking indoor air near a plating chamber 20 and an air blowing-out port 4 for blowing out air after air conditioning. In this case, a main body of the air conditioner 1 is formed with a surrounding air feeding port 2 for sucking air out of the plating chamber to perform an air conditioning and for blowing the air through the surrounding air blowing-out port 4 into the plating chamber. The surrounding air feeding port 2 is provided with a surrounding air feeding adjustment damper 5 for use in adjusting the fed surrounding air and also provided with an indoor air feeding adjustment damper 6 for adjusting a suction of the indoor air. In addition, a sensing sensor 7 for sensing a concentration of mist is arranged in the plating chamber 20 and there is provided a control part for adjusting a degree of opening of each of both adjusting dampers 5 and 6 in response to a detected value obtained by the sensing sensor and selecting the most suitable surrounding air feeding rate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for conditioning the inside of a plating chamber, and more particularly to an outside air introduction type air conditioner that automatically adjusts the outside air introduction ratio according to the state of air in the plating chamber to save energy. Regarding

[0002]

2. Description of the Related Art When a general air conditioner is used in the air conditioning of a plating room, the outside air introduction ratio is only about 10%, and the plating solution mist concentration increases steadily. Therefore, when a high level of plating solution mist concentration is predicted, the outside air introduction rate is 10%.
A 0% all-fresh air conditioner is used. However, the all-fresh air type air conditioner has a drawback that the air-conditioning load becomes very large and the power consumption is large.

An object of the present invention is to change the outside air introduction ratio depending on the state of the air in the plating chamber (plating mist, corrosive mist, flammable vapor, humidity, temperature, etc.), and to reduce power consumption when the mist concentration is low. It is to provide an air conditioner.

[0004]

In order to achieve the above-mentioned object, the invention of claim 1 blows air after air conditioning into the plating chamber and a suction port for sucking indoor air in the plating chamber facing the plating chamber. In the air conditioner having a blowout port for, the outside of the plating chamber is sucked into the air conditioner body to be air-conditioned, and an outside air introduction port for blowing out from the blowout port into the plating chamber is formed and introduced into the outside air introduction port. An outside air introduction adjusting damper for adjusting the outside air is provided, an indoor air introducing adjustment damper for adjusting the intake of indoor air is provided at the suction port, and a detection sensor for detecting the plating chamber mist concentration is provided and obtained from the detection sensor. A control unit is provided which adjusts the opening degrees of both the adjustment dampers according to the detected value to select the optimum outside air introduction ratio.

According to a second aspect of the present invention, the detection sensor detects plating mist concentration, corrosive mist concentration, flammable vapor concentration, humidity and temperature, and the detection sensor has a predetermined value or more. When the mist or vapor concentration is detected, the control unit fully opens the outside air introduction adjusting damper, while when the sensor detects a value less than a predetermined value, the control unit introduces the outside air according to the detected value and the temperature and humidity. The openings of the dampers are adjusted so that the ratio becomes optimum.

According to a third aspect of the present invention, there is provided an air conditioner having a suction port for admitting indoor air in the plating chamber facing the plating chamber and an outlet for blowing air after air conditioning into the plating chamber. A detection sensor for detecting the mist concentration and a ventilation fan for exhausting the air in the plating chamber are provided in the plating chamber, and the ventilation fan is operated or stopped according to the detection value of the detection sensor to adjust the outside air introduction ratio. A control unit is provided by being connected to the detection sensor and the ventilation fan.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1, the air conditioner main body 1 has an outside air inlet 2 for sucking the outside air outside the plating chamber, air-conditioning it, and blowing it back to the inside of the plating chamber from the above-mentioned outlet, and the inside of the plating chamber 20. It has a blow-in port 3 for blowing air and a blow-out port 4 for blowing this out on the front surface. A heat exchanger 11 for cooling and heating and a fan 12 are provided inside the blowout port 4 along the blown air flow, and the rotation of the fan 12 causes the air to flow in from the outside air introduction port 2 or the blowout port 3 or both of them, and the heat exchanger. It is blown out from the blower outlet 4 via 11.

Inside the main body 1, an outside air introduction adjusting damper 5 is provided in the vicinity of the outside air introducing port 2, and an indoor air introducing adjustment damper 6 is provided in the vicinity of the blowing port 3, and the relationship is adjusted by the control unit 9. There is. The control unit 9 further includes an air condition in the plating chamber (plating mist, corrosive mist, flammable vapor,
A detection sensor 7 for detecting humidity, temperature, etc.) is connected. The detection value detected by the detection sensor 7 is input to the control unit 9, and the control unit outputs a control signal based on the detection value to adjust the opening degree of each damper.

That is, the opening of each of the dampers 5 and 6 is automatically adjusted by the control unit 9 in accordance with the detection value detected by the detection sensor 7. First, in the control unit 9,
Regarding the air condition, a predetermined value is set in the sense that it is a limit value that adversely affects the human body, mechanical equipment, etc., if these are detected at higher concentrations. When it is detected that the plating mist or the vapor concentration is equal to or higher than the predetermined value, the control unit 9 fully closes the indoor air introduction adjustment damper 6 regardless of the air conditioning load, and the outside air introduction adjustment damper 5 fully opens to introduce the outside air. Set the ratio to 100%. On the other hand, when the mist or vapor concentration less than the predetermined value is detected, the control unit 9 automatically adjusts the opening degree of both dampers 5 and 6 so that the outside air introduction ratio becomes optimum according to the detected value and the temperature and humidity. Adjust. In other words, in the all-fresh air type, the outside air introduction ratio is originally 100%, but when the difference between the outside temperature (humidity) and the room temperature (humidity) is large and the air conditioning load is large, the mist concentration in the plating chamber is higher than the specified value. Only when it is low, the outside air introduction adjusting damper 5 can be closed according to the detected mist concentration and the set temperature at that time to reduce the outside air introduction ratio.

Even when the outside air temperature (humidity) and the room temperature (humidity) are not so different and the air conditioning load is not so large, in the case of the all fresh air type, the mist or vapor concentration in the plating chamber is less than a predetermined value. When it is not necessary to fully open the outside air introduction adjustment damper, the control unit 9 adjusts the opening degree of both dampers 5 and 6 so that the outside air introduction ratio becomes optimum according to the mist or vapor concentration detection value and the temperature and humidity. However, the air conditioning load can be further reduced.

As described above, when the present invention is applied to an all-fresh air type air conditioner, the outside air introduction ratio can be flexibly adjusted over a wide range according to the state of the room air, which is particularly effective in terms of energy saving.

The adjustment of the outside air introduction adjustment damper 5 and the indoor air introduction adjustment damper 6 may be performed manually instead of automatically. That is, when the outside air introduction ratio can be determined in advance depending on the work situation or the state of the outside air, the damper opening may be set manually. Because it is not automatically adjusted,
There is an advantage that the equipment cost is reduced accordingly.

Another embodiment of the present invention is shown in FIG.

The air conditioner main body 21 has a suction port 23 for sucking the air in the plating chamber 20 on the front surface and a blowout port 2 for blowing the air.
4 A heat exchanger for cooling and heating and a fan (not shown) are provided inside the air outlet, and the indoor air is sucked through the air inlet 23 by the rotation of the fan, and the air outlet 2 is passed through the heat exchanger.
4 is blown into the plating chamber 20.

A detection sensor 27 for detecting the indoor air condition (plating mist, corrosive mist, flammable vapor, humidity, temperature, etc.) is provided in the plating chamber 20, and this detection sensor 27 is connected to the control unit 29. Connected, control unit 29
Is a ventilation fan 28 provided on the outer wall of the plating chamber 20.
Connected to. The detection value detected by the detection sensor 27 is input to the control unit 29, and the control unit outputs a control signal based on the detection value to control the start / stop of the ventilation fan 28.

First, a predetermined value is set in the control unit 29 according to the state of the room air, as in the case of one embodiment. When the detection sensor 27 detects that the plating mist or vapor concentration is equal to or higher than the predetermined value, the control unit 29 drives the ventilation fan 28 to discharge the indoor air to the outside, while the mist or the mist below the predetermined value. When the vapor concentration is detected, the control unit 29 stops driving the ventilation fan 28. The moving direction of the air in this embodiment is opposite to that in one embodiment. That is, in one embodiment, as shown in FIG. 1, outside air is introduced to reduce the concentration of plating mist or vapor in the plating chamber 20 and to diffuse these pollutants out of the room. In this mode, as shown in FIG. 2, the contaminated indoor air is discharged to purify the indoor environment.

As described above, the present invention can be applied to the case of an air conditioner that does not have an outside air introduction port, enhances the safety of work in the plating chamber, and reduces damage such as corrosion of equipment due to corrosive steam. It is also effective above.

[0019]

In summary, the air conditioner according to the present invention has the following excellent effects.

(1) The outside air introduction ratio can be changed according to the state of the air in the air-conditioned room, and the amount of power used can be suppressed to save energy. This is particularly effective in an all-fresh air type air conditioner. That is, when the air condition in the air-conditioned room is good, the outside air introduction ratio can be reduced, and conversely, when the air condition is bad, the conventional outside air introduction ratio (100%) can be maintained. In other words, when the air conditioning load is large due to the difference between the inside and outside temperatures, open and close both adjustment dampers only after considering the temperature and humidity conditions only when the mist / steam concentration is low and the outside air introduction ratio need not be 100%. The outside air introduction ratio can be reduced to the optimum value. Even if the air-conditioning load is small, if the outside air introduction ratio does not need to be 100%, the outside air introduction ratio can be further reduced.

(2) The working environment in the plating chamber can be improved as much as possible.

(3) Prevent corrosion of the device and others due to mist.

(4) Prevent explosion due to flammable vapor.

(5) Prevent discoloration and corrosion of plated products stored indoors.

[Brief description of the drawings]

FIG. 1 is a schematic side sectional view showing an embodiment of an air conditioner of the present invention.

FIG. 2 is a schematic side sectional view showing another embodiment of the air conditioner of the present invention.

[Explanation of symbols]

 1 Air Conditioner Main Body 2 Outside Air Intake Port 3,23 Plating Chamber Suction Port 4,24 Plating Room Air Outlet 5 Outside Air Introduction Adjusting Damper 6 Plating Room Air Introduction Adjusting Damper 7,27 Plating Room Air Condition Detection Sensor 9,29 Control Section 20 Plating room 21 Air-conditioner main unit that does not introduce outside air 28 Ventilation fan

Claims (3)

[Claims] 1. An air conditioner having a suction port for admitting indoor air in the plating chamber facing the plating chamber and an outlet for blowing air after air conditioning into the plating chamber, wherein the air conditioner main body is provided with plating. Forming an outside air introduction port for sucking outside air into the plating chamber from the outside air by sucking in the outside air, and providing an outside air introduction adjustment damper for adjusting the introduced outside air at the outside air introduction port and at the same time the inside air of the inside air to the suction port. An indoor air introduction adjustment damper that adjusts the suction is provided, and a detection sensor that detects the mist concentration is further provided in the plating chamber, and the opening of both adjustment dampers is adjusted according to the detection value obtained from the detection sensor. An air conditioner having a control unit for selecting the outside air introduction ratio of. 2. The detection sensor is a plating mist concentration,
When the corrosive mist concentration, the flammable vapor concentration are detected, the humidity and the temperature are further detected, and the detection sensor detects the mist or vapor concentration above a predetermined value, the control unit controls the outside air introduction adjustment damper. 2. When the sensor is fully opened, and when the sensor detects a value less than a predetermined value, the control unit adjusts the opening degree of each damper so that the outside air introduction ratio becomes optimum according to the detected value, temperature, and humidity. Air conditioner. 3. A mist concentration is detected in a plating chamber in an air conditioner having an inlet for admitting indoor air in the plating chamber facing the plating chamber and an outlet for blowing air after air conditioning into the plating chamber. Detection sensor and a ventilation fan that exhausts the air in the plating chamber in the plating chamber, and further activates or deactivates the ventilation fan according to the detection value of the detection sensor to detect the control unit that adjusts the outside air introduction ratio. An air conditioner provided by being connected to a sensor and the ventilation fan.