JP5425963B2 - Electrode steam humidifier - Google Patents

Description

  The present invention relates to an electrode type steam humidifier.

  An electrode-type steam humidifier applies a voltage between electrodes immersed in water in a water container to flow current, generates water by boiling water with Joule heat, and supplies the steam to an air supply such as an air conditioner. Used to spray and humidify. The amount of humidification (steam generation amount) is controlled by changing the current value by increasing or decreasing the surface area (immersion water level) of the electrode in contact with water by water supply and drainage.

JP-A-6-169993

  However, since the magnitude of the current value is affected by the conductivity of water, if the conductivity is too low, the required current value is not reached even if the immersion water level reaches the upper limit, resulting in insufficient humidification capacity. On the other hand, if the conductivity is too high, adhesion of the scale to the electrode increases, resulting in a short life. In order to prevent this, it was necessary to supply water with an appropriate conductivity. Although tap water is generally used for this water supply, there is a problem that the electrode-type steam humidifier cannot be used outside the tap water region having an appropriate conductivity because the conductivity varies greatly depending on the region. In addition, when the scale adheres and accumulates between the electrodes after a long period of use, there is a risk that current flows between the electrodes even if there is no water, resulting in smoke, fire, or failure.

  In order to solve the above problems, the present invention provides a plurality of electrodes in a water container and boiles the water with a current flowing between the electrodes through the water in the water container so that an amount corresponding to the current value is obtained. An electrode type steam humidifier for generating humidifying steam, a water supply mechanism for starting / stopping water supply of the water container by a command signal, a drainage mechanism for starting / stopping drainage of the water container by a command signal, A current value detector for detecting a current value flowing between the electrodes, a water level detector for detecting the full position of the water container, a set current value corresponding to a required humidification amount, and a detected current value of the current value detector. A humidification amount controller that controls the detection current value by increasing or decreasing the immersion water level of the electrode in the water container by sending a command signal to the water supply mechanism and the drainage mechanism, and a water level detector After detecting the full water position, By sending a signal, water supply is stopped and the amount of drainage up to the electrode soaking upper limit water level can be set freely. The most important feature is that it includes a conductivity control mechanism that controls the conductivity of the water by energizing and stopping the water supply for a predetermined time so that the water supply stop time can be changed.

According to the invention of claim 1,
(1) If steam generation is continued without supplying water in a water container containing water, the electrolyte (ion) concentration increases and the conductivity increases. By utilizing this, the water conductivity in the water container is first made higher than the appropriate value, so that the proper conductivity can be maintained even when water with low conductivity is supplied later. it can. That is, when the conductivity of the water supply is low, the conductivity control mechanism increases the conductivity by setting the water supply stop time in the energized state between the electrodes at the electrode immersion upper limit water level to increase the conductivity, and from the full water to the electrode immersion upper limit water level. By setting the drainage amount to be small and reducing the decrease in conductivity, it is possible to prevent the occurrence of insufficient humidification capacity, stabilize the humidification amount, and eliminate restrictions on the area where the electrode-type steam humidifier is used.
(2) If the conductivity of the water supply is too high, the conductivity control mechanism sets a short water supply stop time in the energized state between the electrodes at the electrode immersion upper limit water level to lower the conductivity, and from the full water to the electrode immersion upper limit water level By increasing the amount of drainage up to this point and increasing the decrease in conductivity, it is possible to make the conductivity appropriate and reduce the adhesion of scales to the electrodes, thereby extending the life.
(3) When the conductivity of the water supply is low automatically, the conductivity control mechanism increases the conductivity by increasing the water supply stop time in the energized state between the electrodes at the electrode immersion upper limit water level. By reducing the amount of drainage up to the upper limit water level and reducing the decrease in conductivity, it is possible to prevent the occurrence of insufficient humidification capacity, stabilize the humidification amount, and eliminate restrictions on the use area of the electrode-type steam humidifier.

According to the invention of claim 2 , even if a scale adheres between the electrodes, an abnormal signal can be output by the short-circuit prevention mechanism and the forced stop can be automatically performed, and safety and reliability are improved.

  FIG. 1 shows an embodiment of an electrode-type steam humidifier according to the present invention. This electrode-type steam humidifier includes a water container 1 for containing water for humidification, and a humidifier generated in the water container 1. A tubular humidifying nozzle 3 that discharges steam through the hose 2, a water supply mechanism 6 that starts and stops water supply by the command signal, and a drainage mechanism 7 that starts and stops draining the water container 1 by the command signal And a control means 4. A plurality of electrodes 5 are provided in the water container 1 at predetermined intervals, and the water is boiled by the current flowing between the electrodes 5 and 5 through the water in the water container 1, and the amount corresponding to the current value The humidifying steam is generated.

  The control means 4 includes a current value detector 8 for detecting the current value flowing between the electrodes 5, a water level detector 9 for detecting the full position of the water container 1, and a set current value and current value detection corresponding to the required humidification amount. Humidification which controls the detection current value by increasing / decreasing the immersion water level of the electrodes 5 and 5 in the water container 1 by sending a command signal to the water supply mechanism 6 and the drainage mechanism 7 by comparing with the detection current value of the vessel 8 Sending a command signal to the drainage mechanism 7 by stopping the water supply by sending a command signal to the water supply mechanism 6 after detecting the full water position of the volume controller 10 and the water level detector 9 and making it possible to change the amount of drainage up to the electrode immersion upper limit water level. Conductivity control for controlling the conductivity of the water by draining a predetermined amount of water and energizing the electrodes 5 and 5 at the upper electrode immersion water level after drainage, and stopping the water supply for a predetermined time so that the water supply stop time can be freely changed. Finger to mechanism 11 and drainage mechanism 7 When the current value between the electrodes 5 and 5 is detected by the current value detector 8 after all the water in the water container 1 has been discharged periodically by sending a signal, an abnormal signal is output to forcibly stop. And a short-circuit prevention mechanism 16.

  Setting of required humidification amount and current value corresponding to it, setting of drainage amount from full water to electrode immersion upper limit water level, setting of water supply stop time of energization state between electrodes 5 and 5 at electrode immersion upper limit water level, etc. are not shown Use the setter. The water supply mechanism 6 is provided with an electromagnetic valve 13 in a water supply pipe 12 that sends water to the water container 1, and opens and closes the electromagnetic valve 13 by a command signal to supply a predetermined amount of water. The drainage mechanism 7 is configured by providing a pump 15 in a drain pipe 14 that drains water from the water container 1, and drains a predetermined amount of water by operating and stopping the pump 15 according to a command signal.

  FIG. 2 shows an operation flow of the electrode type steam humidifier of the present invention. When the operation of the electrode type steam humidifier is started, a predetermined voltage is applied between the electrodes 5 and 5, and when the electrodes 5 and 5 are immersed in water by water supply by the water supply mechanism 6, a current flows between the electrodes 5 and 5. The current value is detected by the current value detector 8. As the surface area where water and the electrodes 5 and 5 are in contact with each other, that is, as the immersion water level of the electrodes 5 and 5 increases due to water supply, a larger current flows and the amount of generated steam increases. The humidification amount controller 10 compares the set current value corresponding to the required humidification amount with the detected current value, continues water supply until the detected current value reaches the set current value, and exceeds the required humidification amount (set current value). And stop water supply. At this time, if the upper limit current value is exceeded, a predetermined amount is drained and the current value is lowered, and the generated water level of the electrodes 5 and 5 decreases too much due to steam generation or drainage, and the steam generation amount decreases and falls below the lower limit current value. Resume water supply and repeat the above cycle.

  In this case, if the conductivity of the water supply is low, the detected current value does not exceed the set current value even if the immersion water level of the electrodes 5 and 5 reaches the upper limit (electrode immersion upper limit water level). Full water is detected, and the conductivity control mechanism 11 stops the application of voltage between the electrodes 5 and 5 to stop water supply. Then, when adjusting to the electrode immersion upper limit water level, the amount of drainage is manually changed and controlled so that the decrease in conductivity is reduced, and the electric conductivity is applied between the electrodes 5 and 5 at the electrode immersion upper limit water level after drainage. Therefore, the water supply stop time is manually changed and controlled so that the required water humidification amount (set current value) can be obtained.

  In addition to the control described above, when the current value between the electrodes 5 and 5 is detected after the short-circuit prevention mechanism 16 periodically discharges all the water in the water container 1 for discharging the scale in the water. Then, an abnormal signal is output to a display (not shown) to forcibly stop the voltage application of the electrode type steam humidifier and avoid trouble.

  Moreover, it is free to configure so that the conductivity control is automatically performed. In that case, the conductivity control mechanism 11 stops the water supply by sending a command signal to the water supply mechanism 6 after detecting the full water position of the water level detector 9 and sends a command signal to the drainage mechanism 7 to the electrode immersion upper limit water level by a predetermined amount. When draining, the current value detector 8 detects the current value, compares this detected current value with the set current value corresponding to the required humidification amount, and if the detected current value is low, the current value difference When the amount of drainage up to the electrode immersion upper limit water level is automatically reduced and changed as the amount increases, the electrode 5 and the electrode immersion upper limit water level after drainage is energized between the electrodes 5 and 5 and water supply is stopped for a predetermined time. As the amount of the current value difference increases, the water supply stop time is automatically set longer to change the conductivity of the water. There is a correlation between the amount of current value difference (electric conductivity value of water) and the amount of drainage up to the electrode immersion upper limit water level, and the amount of current value difference (electric conductivity value of water) and the water supply stop at the electrode immersion upper limit water level This is based on the fact that time has a correlation.

  In addition, this invention is not limited to the above-mentioned Example, A design change is freely possible in the range which does not deviate from the summary of this invention. For example, the number of electrodes 5 can be increased or decreased, the structure such as the position and shape can be changed, or the electromagnetic valve 13 and the pump 15 can be changed to other devices. Also, the operation flow of FIG. 2 can be freely changed or added, and the operation flow may be changed or added to the operation of draining the water container 1 by leaving a predetermined amount of water periodically in order to adjust the conductivity of the water.

It is explanatory drawing which shows the whole structure of the electrode type steam humidifier of this invention. It is an operation | movement flowchart of an electrode type steam humidifier.

DESCRIPTION OF SYMBOLS 1 Water container 5 Electrode 6 Water supply mechanism 7 Drainage mechanism 8 Current value detector 9 Water level detector 10 Humidification amount controller 11 Conductivity control mechanism 16 Short-circuit prevention mechanism

Claims (2)

A plurality of electrodes (5) are provided in the water container (1), and the water is boiled with a current flowing between the electrodes (5) through the water in the water container (1), and the current value is determined. An electrode-type steam humidifier for generating a quantity of humidifying steam, wherein a water supply mechanism (6) for starting and stopping water supply of the water container (1) by a command signal and a water supply mechanism (6) of the water container (1) by a command signal A drainage mechanism (7) for starting and stopping drainage, a current value detector (8) for detecting a current value flowing between the electrodes (5), and a water level detector for detecting the full water position of the water container (1) (9) is compared with the set current value corresponding to the required humidification amount and the detected current value of the current value detector (8), and a command signal is sent to the water supply mechanism (6) and the drainage mechanism (7). Thus, the detection current value is controlled by increasing or decreasing the immersion water level of the electrode (5) in the water container (1). The humidification amount controller (10) and the water level detector (9) detect the full water position and send a command signal to the water supply mechanism (6) to stop the water supply and change the drainage amount up to the electrode immersion upper limit water level. As a result, a predetermined amount of water is drained by sending a command signal to the drainage mechanism (7) and energized between the electrodes (5) at the electrode immersion upper limit water level after drainage, and the water supply stop time can be freely changed for a predetermined time. And a conductivity control mechanism (11) for controlling the conductivity of the water by stopping, and the conductivity control mechanism (11) stops water supply after detecting the full water position and supplies a predetermined amount to the electrode immersion upper limit water level. When draining, the current value detector (8) detects the current value, compares this detected current value with the set current value corresponding to the required humidification amount, and if the detected current value is low, the current is detected. The amount of value difference is The amount of drainage up to the electrode immersion upper limit water level is automatically reduced as it becomes shorter, and the current value is applied when the electrode (5) is energized at the electrode immersion upper limit water level after drainage and the water supply is stopped for a predetermined time. An electrode-type steam humidifier characterized by controlling the conductivity of the water by automatically extending the water supply stop time as the amount of difference increases . The current value between the electrodes (5) was detected by the current value detector (8) after all the water in the water container (1) was periodically discharged by sending a command signal to the drainage mechanism (7). The electrode-type steam humidifier according to claim 1 , further comprising a short-circuit prevention mechanism (16) for outputting an abnormal signal to forcibly stop the case .

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