JPH0624890Y2 - Dehumidifier control circuit device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a dehumidifier control circuit device.

<Prior Art> FIG. 2 is a single-line connection diagram showing a conventional example of a control circuit for an electronic dehumidifier of this type (hereinafter simply referred to as a dehumidifier). Reference numeral 20 denotes a dehumidifier, which is an inside of a closed switchboard (not shown). It is stored in. 1 is a commercial input power source which is supplied and controlled from this closed switchboard, 2 is a power supply unit, 3 is a dehumidifying unit, 10 is a control unit, and this control unit is a relative humidity detection unit (hereinafter referred to as RH detection unit)
4 and a relative humidity determination unit (hereinafter referred to as RH determination unit) 5. Reference numeral 6 denotes a control command unit, which is a relay contact controlled by the output of the control unit 10.

The input power source 1 is directly connected to the power source unit 2 and serves as a common power source for the dehumidifying unit 3 and the connecting unit 10. Then, it is transformed and rectified according to each purpose, and in the dehumidifying section 3, for example,
Dehumidification is performed by energizing the electronic cooling element using the Bertie effect. Further, the control unit 10 includes an RH detection unit 4 and an RH determination unit 5 that measure the relative humidity inside the closed switchboard, and a control command unit 6 is provided as an output of the RH determination unit 5 and detected. When the value of the relative humidity is equal to or exceeds the preset reference value, the relay contact of the control command unit 6 operates “closed”, and when the value is less than the reference value, it operates “open” to operate the fan 9 of the dehumidifying unit. , Are going to stop.

<Problems to be solved by the device> In such a dehumidifier control circuit, the conditions for operating and stopping the entire dehumidifier are determined by the control circuit on the external closed switchboard side, and the input power source 1 is connected. For example, the dehumidifying unit 3 is activated, and when the input power supply 1 is cut off, the dehumidifying operation is stopped. And
When the RH determination unit 5 determines that the relative humidity inside the device detected by the RH detection unit 4 of the control unit 10 is lower than a reference value, the dehumidification unit 3 is connected by a relay contact provided in the control command unit 6. The fan 9 is opened and closed to adjust the air flows 7 and 8 to adjust the dehumidification amount per unit time.

In this way, in the conventional control circuit, the fan stops when the relative humidity decreases, but the power supply to the dehumidifying part is continued,
The only way to stop the power supply to this dehumidification section is to open and close the input power source artificially, and although the relative humidity has already dropped sufficiently and the dehumidifier does not need to be operated, the dehumidification operation is performed. Inevitably, there is a possibility that operating costs will rise due to wasted power consumption, and there will be a decrease in reliability caused by human operation. Inevitably, large-sized ones had to be adopted to withstand driving, and the large weight and uneconomical factors also contributed to the high cost.

For this reason, it is possible to select a dehumidifier with a dehumidifying capacity that matches the size of the internal volume of the equipment where you want to install the dehumidifier from several levels, and also the dehumidifier itself has an automatic control function for running and stopping. Therefore, there has been a demand for an improvement that can be easily applied to small devices.

<Means for Solving Problems> The present invention solves the above-mentioned problems, and at the same time, aims to reduce the size and weight of the electronic dehumidifier. Separated into two, and each operates independently,
The circuit configuration is such that it can be stopped, and the control unit power supply is configured so that it is always operated by the connection of the input power supply.The power supply terminal of the dehumidifying unit is connected in series with the control command unit that is the output of the control unit. Insert it and start the operation of the dehumidifying part only when the command to this control command part is "closed", and stop the operation when it is "open", so that the dehumidifier itself has an automatic control function. In addition, the rating of the dehumidifying part is changed from the continuous rating to the time rating according to the dehumidifying volume to reduce the size and weight of the power supply part.

<Operation> With the above-described configuration, the value of the relative humidity detected by the RH detection unit of the control unit is compared with the reference value by the RH determination unit in the next stage, and the necessity of opening / closing operation is determined. If it is determined that the relative humidity exceeds the reference value, the dehumidifying unit is operated, and if the relative humidity is lower than the reference value, a command to stop the dehumidifying unit is output to the control command unit, and the automatic control function is provided.

In this way, by automatically controlling the operation and stop of the dehumidifying section based on the relative humidity, the operating time for one operation can be shortened from several hours to at most tens of hours. As a result, it is not necessary to consider excessive specifications due to continuous ratings for the power transformer for driving the electronic cooling element of the dehumidifying section and the rectifying element, and depending on the required dehumidifying volume, several rated volume ranks, for example, large capacity By providing a shape, medium capacity type, small size, etc., it becomes easier to select the optimum model for equipment with various internal volumes, and it is possible to reduce the structure of the dehumidifying part and reduce the weight as a whole. .

<Embodiment> The present invention will be described in detail below with reference to an embodiment shown in FIG.

FIG. 1 shows a control circuit of a dehumidifier 20 according to the present invention in a single-line connection diagram, where 1 is an input power source, and 2 is a power source section, which is separated into a dehumidifying section power source 2a and a control section power source 2b. Although they are arranged independently of each other, the dehumidifying part power supply 2a is designed to be small and lightweight because of the design based on the time rating.

Reference numeral 3 denotes a dehumidifying portion of the dehumidifier 20, which is composed of, for example, an electronic cooling element or the like (not shown) utilizing the Bertie effect, and a direct current is supplied to the electronic cooling element from the dehumidifying part power supply 2a. The fan 9 for circulating the airflow of the dehumidifying section 3 is connected to the input terminal B of the dehumidifying section power supply 2a.

The control unit power supply 2b is connected to the input terminal A, and the control unit 10
The control power is supplied to the electronic circuit parts such as the RH detection part 4 and the RH determination part 5. Reference numeral 6 denotes a control command unit which is an output from the control unit 10 and is interposed between the input terminals A and B.

At the same time when the input power supply 1 is connected to the power supply input terminal A of the dehumidifier 20, the control unit 10 is activated and the RH detection unit 4 starts measuring the relative humidity in the atmosphere around the dehumidifier. Then, the measured value is compared with a preset reference value in the RH determination unit 5 in the next stage to determine whether or not the dehumidifying unit 3 can be operated. Then, if it is determined that the relative humidity of the measured value is higher, the control command unit 6 which is the output of the RH determination unit 5 is set to "close" to start the operation of the dehumidifying unit, and the relative humidity of the measured value is higher. If it is low, the control command unit 6 remains “open” and the dehumidifying unit 3 is not operated.

However, the RH detection unit 4 of the control unit 10 continues the relative humidity measurement state as it is.

In this way, when the input power source 1 is energized, the relative humidity is constantly monitored and measured by the RH detection unit 4 even if the dehumidification unit 3 is not operating. If the relative humidity inside the equipment may rise above the reference value due to changes in the weather or the like, the dehumidifying portion 3 is immediately activated by the operation of the control command portion 6 to start the dehumidifying operation, and as a result, the relative humidity inside the equipment is increased. When a decrease in humidity is detected and the dehumidifying unit 3 is shut off again by the operation of the control command unit 6, the dehumidifying operation is stopped, and the normal operation mode is repeated.

<Effects> Separate power supply for dehumidifying unit and power supply for control unit, which have been common in the past, make it possible to design a small and lightweight unit independent of each other, and an automatic control design based on relative humidity as a reference value. From large-capacity types intended for closed switchboards to small dehumidifiers for small measuring instruments, time ratings are hierarchically set according to the dehumidifying volume, and commercialization of compact and lightweight products within the rated class is achieved. It became possible to design the control unit that uses the relative humidity as a reference value, which is common to the dehumidifying units of the class, to automatically control, and it was possible to improve reliability and reduce costs.

[Brief description of drawings]

FIG. 1 shows one embodiment of a dehumidifier control circuit according to the present invention in a single-line connection diagram, and FIG. 2 shows an example of a conventional dehumidifier control circuit in a single-line connection diagram. 1 ... Input power source, 2 ... Power supply section 3 ... Dehumidifying section, 4 ... RH detecting section, 5 ... RH determining section, 6 ... RH determining section, 7 ... High humidity air flow, 8 ... Dehumidifying air flow 9 ... Juan, 10 ... Control unit 20 ... Dehumidifier

Claims (1)

[Scope of utility model registration request] 1. A dehumidifying section power supply and a control section power supply which are independent of each other, and an input power source is directly connected to the control section power supply to be constantly input, and an input terminal of the dehumidifying section power supply. The control command section of the control section is connected in series to control the input, and the control section detects the relative humidity and the relative humidity detected by the RH detection section. An RH determination unit that determines whether or not the dehumidifying unit should be operated by comparing a percentage value with a preset reference value, and the control command unit that performs control operation based on the determination result from the RH determination unit A dehumidifier control circuit device characterized by the above.