JP3173228B2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dehumidification system using a solar cell power supply.

[0002]

2. Description of the Related Art Conventionally, an electric dehumidifier uses general commercial AC power as a power source, and has been used in a place where general commercial AC power can be supplied or in a place where an activated generator is present.

[0003]

However, dehumidifiers are often used to prevent dampness and mold in homes that have been absent or for a long period of time. In such a case, the dehumidifier is bothersome for running the dehumidifier. Commercial power was being supplied. In addition, even if a dehumidifier is installed, the power supply of the house is often stopped when the user is absent due to anxiety about safety, and the utility of the dehumidifier may not be available.

SUMMARY OF THE INVENTION In view of the above problems, the present invention makes it possible to use a dehumidifier without supplying general commercial power when it is absent, since the power source for only the dehumidifier is secured by a solar cell.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a solar cell, a plurality of dehumidifiers powered by the output of the solar cell, and a load connected in parallel with the dehumidifier. A device, a detecting means for detecting the output voltage of the solar cell, and a control means for comparing the voltage detected by the detecting means with a preset voltage and controlling the number of operating dehumidifiers based on the comparison result. Have. Correction 4:
The detailed description of the invention is amended as follows.

Also, a solar cell, a load device using the single-phase output of the solar cell as a power source, conversion means for converting the single-phase output of the solar cell into an AC power supply, and a power supply using the AC output of the conversion means. A plurality of dehumidifiers, detecting means for detecting the output voltage of the solar cell, and comparing the voltage detected by the detecting means with a preset voltage, and controlling the number of operating dehumidifiers based on the comparison result. Control means.

The solar cell, a storage battery connected in parallel with the solar cell, a diode connected between a positive terminal of the solar cell and a branch point to the storage battery + side, A relay connected between the storage battery and a conversion unit that converts a single-phase output of the solar cell into an AC power supply,
A plurality of dehumidifiers that use the AC output of the converter as a power source, a detector that detects the output voltage of the solar cell, and a result of comparing the voltage detected by the detector with a preset voltage. Control means for controlling the number of operating dehumidifiers, detecting means for detecting the terminal voltage of the storage battery, and comparing the voltage detected by the detecting means with a preset voltage, and relaying the relay based on the comparison result. It has a control device for controlling.

A solar cell, a storage battery connected in parallel with the solar cell, a converter for converting a single-phase output of the solar cell into an AC power supply, and a plurality of units using the AC output of the converter as a power supply. A dehumidifier, a branch point 1 connected to the + terminal of the solar cell, a branch point 2 connected to the + terminal of the conversion means, and a + terminal of the storage battery.
A branch point 3, a diode connected between the branch points 1 and 2, and a series connection between the branch point 1 and the branch point 3.
Connected diode and resistor and its branch point 3
And a diode connected between the branch point 2 and the detecting means for detecting the output voltage of the solar cell. The voltage detected by the detecting means is compared with a preset voltage. It has a control device for controlling the number of operating dehumidifiers.

Also, a solar cell, a storage battery connected in parallel with the solar cell, conversion means for converting the single-phase output of the solar cell into an AC power supply, and a plurality of units using the AC output of the conversion means as a power supply , A junction 1 connected to the + terminal of the solar cell, a junction 2 connected to the + terminal of the converter, and a junction 3 connected to the + terminal of the storage battery. A diode connected between the branch point 1 and the branch point 2; a diode and a resistor connected in series between the branch point 1 and the branch point 3; A diode and a relay connected in series between them, a detecting means for detecting the output voltage of the solar cell, and comparing the voltage detected by the detecting means with a preset voltage, and performing the dehumidification according to the comparison result. Dehumidifier operation by controlling the number of operating units And a control unit for conducting a predetermined time the relay when increasing the number.

[0010]

The operation of the above means is as follows.

According to the present invention, since the power supply of the dehumidifier is a DC output of a solar cell, a commercial power supply is unnecessary, and there is no need to supply a commercial power supply in the absence of the power supply. It saves money and improves safety because it stops even if you forget to turn off other appliances. Also,
A plurality of dehumidifiers are installed and the number of operating units is changed in accordance with the change in the output of the solar cell due to the change in the amount of sunlight, so the use efficiency of the solar cell is increased. Also, on the output side of the solar cell
Since a load device connected in parallel with the dehumidifier is provided,
The accuracy of detecting the output of the solar cell when the dehumidifier is not operating is improved.

Further, by adding a conversion means for converting the single-phase output of the solar cell into an AC power supply and using a 100 V AC power supply, a commercially available dehumidifier can be used.

Further, a storage battery connected in parallel with the solar cell is added to cover a sudden increase in load due to a starting current generated when the number of operating dehumidifiers is increased. In addition, the terminal voltage of the storage battery is detected, and charging from the solar cell is controlled to prevent overcharging and overdischarging.

Further, a circuit for charging the storage battery and a circuit for discharging are separately provided, a resistor is connected to the charging circuit to control a charging current, and a voltage setting value of the solar cell when the number of operating dehumidifiers is reduced is stored in the storage battery. To prevent overdischarge of the storage battery and eliminate the need for a storage battery voltage detection means and a relay drive unit to reduce costs.

Further, a relay is provided in a circuit for discharging from the storage battery so that the discharge is performed only when the number of operating dehumidifiers is increased, thereby enabling a storage battery with a small capacity to reduce the cost.

[0016]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention. In the figure, reference numeral 1 denotes a solar cell, and 2a to 2c
Is a dehumidifier that uses the output of the solar cell 1 as a power source.
Reference numeral 3 denotes an A / D converter for converting analog data of the output voltage of the solar cell 1 into digital data, and reference numeral 4 denotes a command for operating the dehumidifier by comparing data from the A / D converter 3 with previously stored data. Control C output to photocoupler 5
PU. The relays Rya to Ry of the relay block 6 are operated by the operation command from the control CPU 4 by the photocoupler 5.
The coil c is energized. The contacts of the relays Rya to Ryc are provided between the input ports of the dehumidifiers 2a to 2c and the output ports of the solar cell 1, respectively, and control the energization of the dehumidifier by the energization state of the relay coil. A DC fan motor 7 that circulates indoor air using the output of the solar cell 1 as a power supply is connected to the output side of the solar cell 1.
FIG. 2 is a flowchart of the present embodiment, and the operation of the present embodiment will be described with reference to FIG. First, CPU after start
Check the operation status from the operation command state in 4 and read the number of operating units. Then, determine whether the read number of operating units is one or more.
If O, that is, if no one is operating, go to branch b. In the branch b, the output voltage V1 of the solar cell 1 is read from the A / D converter 3. At this time, since the DC fan motor 7 is driven by the output of the solar cell 1, if the output of the solar cell 1 is sufficiently ensured, the output voltage of the solar cell 1 increases, and the voltage V1 just read in is set in advance. When the operating number increase determination voltage Vh is larger than the first number, the first unit is operated and the photocoupler 5
, The coil of the relay Rya is energized, the contact of the relay Rya is closed, and the dehumidifier 1 is operated. After the first unit operation start command, the operation waits for 2 seconds so as not to detect a drop in the output voltage of the solar cell 1 due to the starting current of the compressor, and then returns to step a and repeats the operation status check. At this time, if the voltage V1 is equal to or lower than Vh, the output voltage V1 of the upper solar cell 1 returns to the reading and V1
Repeat until> Vh. When the number of operating units is one or more, it is next determined whether there are two or more units. When the number of operating units is one, the process proceeds to branch c. In the branch c, the output voltage V1 of the solar cell 1 is read from the A / D converter 3, and when the currently read voltage V1 is higher than the preset voltage Vh, the second unit is operated and the coil of the relay Ryb is connected via the photocoupler 5. And the contact of the relay Ryb is closed to operate the dehumidifier 2. Wait for 2 seconds after the second vehicle operation start command, then a
Return to and repeat the operation status check. At this time, the voltage V1 is V
h or less, the operation is compared with a preset operation decrease judgment voltage VL, and when V1 <VL, the first unit that is currently operating is stopped to de-energize the coil of the relay Rya via the photocoupler 5 to stop. The energization to 1 is stopped. After the first unit stop command a
Return to and repeat the operation status check. At this time, the voltage V1 is V
In the case of L or more, the process returns to reading the output voltage V1 of the upper solar cell 1, and the operation of the branch c is repeated. If the number of operating vehicles is two or more, it is next determined whether or not two vehicles are operating, and if YES, that is, if two vehicles are operating, the procedure goes to branch d. At the branch d, the output voltage V1 of the solar cell 1 is read from the A / D converter 3, and when the currently read voltage V1 is higher than the preset voltage Vh, the third unit is operated and the relay Ryc is connected via the photocoupler 5.
To the coil of the relay, close the contact of the relay Ryc and dehumidifier 3
To drive. It waits for 2 seconds after the third vehicle operation start command, then returns to a and repeats from the operation status confirmation. At this time, the voltage V
When 1 is equal to or lower than Vh, the voltage is compared with a preset voltage VL and V
When 1 <VL, the power supply to the coil of the relay Ryb is stopped via the photocoupler 5 and the power supply to the dehumidifier 2 is stopped in order to stop the second unit currently operating. After the second vehicle stop command, the process returns to step a and repeats from the operation status confirmation. At this time, if the voltage V1 is equal to or higher than VL, the process returns to reading the output voltage V1 of the solar cell 1 above and repeats the operation of the branch d.

If it is determined that the number of operating vehicles is two, that is, if three vehicles are operating, the procedure goes to branch e. In the branch e, the output voltage V1 of the solar cell 1 is read from the A / D converter 3, and the voltage V1 just read is set to the preset voltage VL.
When V1 <VL, the power supply to the coil of the relay Ryc is stopped via the photocoupler 5 and the power supply to the dehumidifier 3 is stopped in order to stop the third vehicle currently operating. After the third vehicle stop command, the process returns to a and repeats from the operation status confirmation. At this time, the voltage V
When 1 is equal to or higher than VL, the process returns to reading the output voltage V1 of the upper solar cell 1 and repeats the operation of the branch d.

As described above, the number of operating dehumidifiers is controlled in accordance with the output of the solar cell, and the load of the DC fan motor is applied even when the dehumidifier is not operating. Can be stabilized with the output voltage of the solar cell. In this embodiment, a DC fan motor is used as the load device . However, similar effects can be obtained as long as the load device is driven in a relatively wide voltage range such as a resistor.

FIG. 3 is a block diagram of another embodiment of the present invention.
The DC output of the solar cell 1 is a voltage of 100 V and a frequency of 60 Hz.
An inverter 8 for converting into AC is installed between the solar cell 1 and the relay block, and the power of the dehumidifiers 2a to 2c is set to 100
V, 60 Hz commercial power supply. Dehumidifier 2a
By setting the power supply of the power supply to the same as the commercial power supply, a general commercially available dehumidifier can be used for the dehumidifiers 2a to 2c.

FIG. 4 is a block diagram of still another embodiment of the present invention. In order to prevent a decrease in the output voltage of the solar cell 1 due to a starting current when the compressor of the dehumidifier 2a, 2b or 2c starts, A storage battery 9 is added in parallel with the battery 1,
Further, a diode 10 for preventing backflow from the storage battery 9 is provided on the + terminal side of the solar cell 1, a relay Ryd for preventing overcharge and overdischarge is provided on the storage battery 9 + terminal side, and analog data of the terminal voltage of the storage battery 9 are digital data. The A / D converter 11 for converting to A / D is added. FIG. 5 is a flowchart of the present embodiment, in which the storage battery voltage V2 is detected, and the detected storage battery voltage V2 is controlled between a voltage Vth at which the storage battery 9 is overcharged and a voltage VtL at which the storage battery 9 is overdischarged. The operation of this embodiment will be described with reference to FIG.
2 is read, and the read voltage V2 is compared with the voltage VtL at which the storage battery 9 is overdischarged. If VtL> V2,
The coil of the relay Ryd is energized via the photocoupler 5 to charge the solar cell 1 and the contact of the relay Ryd is closed. If VtL ≦ V2, the storage battery 9 is compared with a voltage Vth at which the storage battery 9 is overcharged. If Vth <V2, power is supplied to the coil of the relay Ryd via the photocoupler 5 to stop charging from the solar cell 1. Stop the contact of the relay Ryd. If Vth ≦ V2, the process proceeds to the next with the state as it is. The operation thereafter is the same as in the case of the flowchart of FIG. In this manner, the storage battery voltage V2 is controlled between the voltage Vth at which the storage battery 9 is overcharged and the voltage VtL at which the storage battery 9 is overdischarged to prevent overcharge and overdischarge.

FIG. 6 is a block diagram of another embodiment of the present invention.
A circuit for charging the solar battery 1 to the storage battery 9 is provided between the + terminal of the solar battery 1 and the diode 12, and a diode 13 for preventing backflow and a resistor 14 for controlling the charge amount are added in series to the charging circuit. 8 is connected to the downstream side of the diode 12, a backflow prevention diode 15 is added to the discharge circuit, and the detection voltage VL of the solar cell when the number of operating dehumidifiers is reduced is changed to the rated voltage of the storage battery. It is set near. In this way, the charging current is controlled and the storage battery is prevented from being over-discharged, so that the means for detecting the voltage of the storage battery and the relay drive unit are not required, thereby reducing the cost.

FIG. 7 is a block diagram of another embodiment of the present invention.
A relay Ryd is added to the discharge circuit of the storage battery 9. FIG. 8 is a flowchart of the present embodiment, in which branches b, c,
In each of d, Vh <V1, and when adding the number of operating dehumidifiers, the relay Ryd energizing command is added before the operation increasing command, and the relay Ryd energizing stop instruction is added after waiting for 2 seconds. The operation of the present embodiment will be described with reference to FIG.
When the voltage V1 read from the converter 3 and the currently read voltage V1 is higher than a preset operation number increase determination voltage Vh, the first unit is determined to be the first-unit operation. The coil of the relay Ryd is energized to close the contact of the relay Ryd. Next, the coil of the relay Rya is energized through the photocoupler 5 to close the contact of the relay Rya, and the dehumidifier 1 is operated. After the first unit operation start command, it waits for 2 seconds to secure the start-up time of the compressor, then stops the power supply to the coil of the relay Ryd via the photocoupler 5, opens the contact of the relay Ryd, and discharges from the storage battery 9. To stop. Thereafter, the flow returns to step a and the operation is repeated from the confirmation of the operation status. A similar flow is entered in each of the branches c and d before and after the instruction to increase the number of operating vehicles. In this way, by conducting the discharge circuit only at the start of the operation of the dehumidifiers 2a to 2c, the discharge time can be reduced and a storage battery having a small capacity can be obtained, so that the cost can be reduced.

[0024]

As is apparent from the above embodiment, in the air conditioner of the present invention, since the power supply of the dehumidifier is the DC output of the solar cell, no commercial power supply is required, and there is no need to supply commercial power in the absence. Therefore, it is not necessary to make a power contract in the meantime, so that a basic charge can be saved, and even if other electric products are forgotten to be turned off, the operation is stopped, so that the safety is improved. In addition, since a plurality of dehumidifiers are installed and the number of operating units is changed in accordance with a change in the output of the solar cell due to a change in the amount of sunlight, the utilization efficiency of the solar cell is increased. Dehumidification on the output side of the solar cell
Since the load device connected in parallel with the dehumidifier is provided, the accuracy of detecting the output of the solar cell when the dehumidifier is not operating is improved.

Further, by adding a conversion means for converting the single-phase output of the solar cell into an AC power supply and using a 100 V AC power supply, a commercially available dehumidifier can be used.

Further, a storage battery connected in parallel with the solar cell is added to cover a sudden increase in load due to a starting current generated when the number of operating dehumidifiers is increased. In addition, the terminal voltage of the storage battery is detected, and charging from the solar cell is controlled to prevent overcharging and overdischarging.

Further, a circuit for charging the storage battery and a circuit for discharging are separately provided, a resistor is connected to the charging circuit to control a charging current, and a voltage setting value of the solar cell when the number of operating dehumidifiers is reduced is stored in the storage battery. The voltage is set near the rated voltage to prevent overdischarge of the storage battery, and the cost of the storage battery can be reduced by eliminating the need for a storage battery voltage detection unit and a relay drive unit.

Further, a relay is provided in a circuit for discharging from the storage battery so that the discharge is performed only when the number of operating dehumidifiers is increased, so that a storage battery with a small capacity can be used to reduce the cost.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an air conditioner of a first embodiment.

FIG. 2 is a flowchart showing the control.

FIG. 3 is a configuration diagram of a second embodiment of the present invention.

FIG. 4 is a configuration diagram of a third embodiment of the present invention.

FIG. 5 is a flowchart showing the control.

FIG. 6 is a configuration diagram of a fourth embodiment of the present invention.

FIG. 7 is a configuration diagram of a fifth embodiment of the present invention.

FIG. 8 is a flowchart showing the control.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Solar cell 2-1 2-2, 2-3 Dehumidifier 4 Control CPU 6 Relay block 7 DC fan motor 9 Storage battery

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-56-142339 (JP, A) JP-A-59-60139 (JP, A) Fully open 58-129513 (JP, U) Really open 37114 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F 11/02 F24F 11/02 102 F24F 3/14 H01L 31/04

Claims (5)

(57) [Claims] 1. A solar cell, a plurality of dehumidifiers powered by the output of the solar cell, and the solar cell in parallel with the dehumidifier.
Connected to the output side of the positive battery and at least the dehumidification
A load device that is operated when the air conditioner is not operating , a detecting unit that detects an output voltage of the solar cell, and the number of operating the dehumidifiers based on a comparison result of the voltage detected by the detecting unit and the comparison result. An air conditioner provided with control means for controlling the air conditioner. 2. A solar cell, a load device using the single-phase output of the solar cell as a power supply, a conversion unit for converting the single-phase output of the solar cell into an AC power supply, and a power supply using the AC output of the conversion unit. A plurality of dehumidifiers, detecting means for detecting the output voltage of the solar cell, and comparing the voltage detected by the detecting means with a preset voltage, and controlling the number of operating dehumidifiers based on the comparison result. An air conditioner provided with a control unit that performs the control. 3. A solar cell, a storage battery connected in parallel with the solar cell, a diode connected between a + terminal of the solar cell and a branch point to the storage battery + side, A relay connected between the storage battery, conversion means for converting a single-phase output of the solar cell into an AC power supply, a plurality of dehumidifiers powered by the AC output of the conversion means, and an output of the solar cell Detecting means for detecting the voltage, control means for comparing the voltage detected by the detecting means with a preset voltage and controlling the number of operating dehumidifiers based on the comparison result, and detecting terminal voltage of the storage battery An air conditioner comprising: a detection unit that performs the operation; and a control device that compares the voltage detected by the detection unit with a preset voltage and controls the relay based on a result of the comparison. 4. A solar cell, a storage battery connected in parallel with the solar cell, a converter for converting a single-phase output of the solar cell into an AC power supply, and a plurality of units using the AC output of the converter as a power supply. , A branch point 1 connected to the + terminal of the solar cell, a branch point 2 connected to the + terminal of the converter, and a + terminal of the storage battery.
Branch point 3, a diode connected between branch point 1 and branch point 2, and a series connection between branch point 1 and branch point 3.
A diode and a resistor which is a diode connected between the branch point 3 between the branching point 2, and a detecting means for detecting an output voltage of the solar cell, the detected voltage by said detecting means And a control device for controlling the number of operating dehumidifiers based on a result of the comparison with a preset voltage. 5. A solar cell, a storage battery connected in parallel with the solar cell, a converter for converting a single-phase output of the solar cell into an AC power supply, and a plurality of units using the AC output of the converter as a power supply. , A junction 1 connected to the + terminal of the solar cell, a junction 2 connected to the + terminal of the converter, and a junction 3 connected to the + terminal of the storage battery. A diode connected between the branch point 1 and the branch point 2; a diode and a resistor connected in series between the branch point 1 and the branch point 3; A diode and a relay connected in series between
Detecting means for detecting the output voltage of the solar cell, and comparing the voltage detected by the detecting means with a preset voltage, and controlling the number of operating dehumidifiers based on the comparison result to increase the number of operating dehumidifiers An air conditioner comprising a control device that conducts the relay for a predetermined time when the air conditioner is turned on.