JP2963820B2 - Dehumidifier for clothes dryer installed in multiple units - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for evacuating (exhausting) clothes provided with a plurality of clothes dryers (hereinafter referred to as "dryers").

[0002]

2. Description of the Related Art FIG. 2 and FIG. 3 show examples of dehumidification of a plurality of conventional dryers.

FIG. 2 shows a type in which a plurality of dryers 1a, 1b, and 1c each incorporate a dehumidifying fan, and exhaust the moisture to the outside via a common duct 2. 3a in the figure,
Reference numerals 3b and 3c denote a moisture drain duct, and reference numerals 4a, 4b and 4c denote dampers for preventing backflow.

FIG. 3 shows a type in which a plurality of dryers 1a, 1b and 1c are provided with moisture exhaust ducts 3a, 3b and 3c, and the moisture is individually exhausted to the outside via the respective ducts 3a, 3b and 3c. It is.

[0005]

However, the above-mentioned known example has the following disadvantages.

A. In the case of the common duct type shown in FIG. 2, since the moisture is exhausted by the push-in method, there is a concern that the exhaust moisture may flow back to another unused dryer due to the pressure loss in the common duct 2. Therefore, conventionally, the diameter of the common duct 2 itself is made as large as possible, and each dryer 1a,
Drainage ducts 3a, 3b connecting 1b, 1c and common duct 2
Dampers 4a, 4b, 4c for preventing backflow are attached to b, 3c. For this reason, the cost of equipment is high and the diameter of the common duct 2 is large, so that there is an aesthetic problem and a wall or beam through hole becomes large, so that there is a problem that reinforcement work must be performed separately. .

B. The individually dehumidifying duct 3a shown in FIG.
In the case of the type having 3b and 3c, construction becomes troublesome and holes for the number of exhaust ducts are required in the wall and the beam penetrating portion. For this reason, also in this example, the problem of the reinforcement work occurs.

It is an object of the present invention to provide a clothes dryer having a plurality of clothes dryers which does not have the above-mentioned disadvantages a and b.

[0009]

The construction of the moisture evacuator of the clothes dryer according to the present invention, which is installed in plural units, is as follows.

In a dehumidifying device for discharging moisture from a plurality of clothes dryers to the outside via one common duct, an intermediate fan whose rotation speed can be controlled is attached to the common duct, and clothes are more than the intermediate fan. Installing a filter on the dryer side, installing a differential pressure sensor that detects the differential pressure across the filter, installing a fan sensor that detects the air pressure or air volume of the intermediate fan, and installing multiple clothes dryers A current detection circuit for detecting the number of operating units is installed in the power supply circuit to reach, controlling the number of rotations of the intermediate fan according to the number of used clothes dryers detected by the current detection circuit, from the fan sensor Stop the intermediate fan and each clothes dryer based on the signal, and drive the alarm for filter cleaning or replacement based on the signal from the differential pressure sensor A control circuit is provided with it that, a plurality placed clothing dryer exhaust humidity apparatus characterized by.

[0011]

The moisture discharged from the clothes dryer is discharged outside from the common duct by the action of the intermediate fan.

The control circuit detects the number of clothes dryers used from the value of the current flowing through the control circuit, and drives the intermediate fan so that the amount of air flows matches the number of clothes dryers. There is no problem if the intermediate fan normally secures the air volume, but if the intermediate fan does not rotate normally due to a failure or the like, the air volume specified by the control circuit is not secured. At this time, a signal is transmitted from the fan sensor, and the control circuit stops the intermediate fan based on the signal. At the same time, stop the clothes dryer in use. At this time, an alarm may be issued at the same time.

Next, when the filter is clogged, the differential pressure across the filter increases, and this differential pressure is detected by a differential pressure sensor. When a signal is transmitted from the differential pressure sensor to the control circuit, the control circuit issues an alarm indicating that the filter is clogged. The alarm is given by blinking a lamp, sounding a buzzer, sound, or the like. Further, the fan sensor can also detect the occurrence of clogging on the top side of the common duct. The control circuit shuts down the intermediate fan and the clothes dryer or issues an alarm when this is detected.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS 1a, 1b and 1c are clothes dryers, 2 is a common duct, 2a is a common duct top, 5a, 5b and 5c are power outlets, 6 is a power line, 7 is a power source, 8a, 8b and 8
c is a hood, 9 is a filter, 10 is a differential pressure sensor for detecting clogging of the filter 9, 11 is an intermediate fan, 12 is a wind pressure sensor (switch), and 13 is a control circuit, and performs the following control.

The moisture discharged from the clothes dryers 1a, 1b, 1c is discharged from the common duct 2 to the outside by the action of the intermediate fan 11. The clothes dryers 1a, 1b, 1c
Inside is a small fan.

The control circuit 13 measures the value of the current flowing from the power supply 7 to each of the clothes dryers 1a, 1b, 1c via the control circuit 13, and from this value the clothes dryers 1a, 1b,
The number of used fans 1c is detected, and the intermediate fan 11 is driven so that the air volume becomes equal to the number of used fans. Intermediate fan 11
There is no problem in the case where the air volume is normally secured, but when the rotation is not normal due to a failure or the like, the air volume instructed by the control circuit 13 is not secured. At this time, wind pressure sensor 1
2, the control circuit 13 stops the intermediate fan 11 based on this signal. At the same time, the clothes dryers 1a, 1b, 1c in use are stopped. At this time, an alarm may be issued.

Next, when the filter 9 is clogged, the differential pressure across the filter 9 increases, and this differential pressure is detected by the differential pressure sensor 10. And
When a signal is transmitted from the differential pressure sensor 10 to the control circuit 13, the control circuit 13 issues an alarm indicating that the filter 9 is clogged. The alarm is given by blinking a lamp, sounding a buzzer, sound, or the like. Further, even when clogging occurs on the top 2a side of the common duct 2, the wind pressure sensor 12 detects the clogging by the wind pressure. When the control circuit 13 detects this, the intermediate fan 11 and the clothes dryers 1a, 1b,
1c is stopped or an alarm is issued.

When an air volume switch is provided as the air pressure sensor 12, several threshold air volumes are provided. If the air volume is not secured, the number of clothes dryers to be used is limited via the control circuit 13 or the like. Alternatively, a warning may be issued by sound, a buzzer, a lamp, or the like for the filter cleaning time or the failure of the intermediate fan 11. The filter may be of a type that automatically cleans when the cleaning time comes.

[0019]

The present invention is constituted as described above and has the following effects.

A. Since the air flow (rotation speed) of the intermediate fan is controlled in accordance with the number of clothes dryers used, the pressure in the common duct fluctuates according to the number of clothes dryers used, and other dehumidification flows back to the unused clothes dryer. Don't worry.

B. Efficient dehumidification is possible by controlling the intermediate fan. As a result, the diameter of the common duct can be reduced, and the workability is improved, and the aesthetic appearance and the strength of the building are not adversely affected.

C. By attaching the filter to the common duct, lint does not adhere to the intermediate fan to cause this failure, and clogging does not occur at the top.

D. When the intermediate fan fails or the common duct is clogged, the operation is stopped or an alarm is issued, so that the clothes dryer can be used with confidence.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a dehumidifying device according to the present invention.

FIG. 2 is an explanatory view of a conventional common duct system.

FIG. 3 is an explanatory diagram of a conventional individual dehumidification method.

[Explanation of symbols]

 1a, 1b, 1c Clothes dryer 9 Filter 10 Differential pressure sensor 11 Intermediate fan 12 Wind pressure sensor 13 Control circuit

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) D06F 58/10 D06F 58/28 F24F 7/08

Claims (2)

(57) [Claims] 1. A dehumidifying device for discharging moisture from a plurality of clothes dryers to the outside via a single common duct, wherein an intermediate fan capable of controlling the number of rotations is attached to the common duct, and the intermediate fan is provided with the intermediate fan. Also installed a filter on the clothes dryer side, installed a differential pressure sensor that detects the differential pressure across the filter, installed a fan sensor that detects the air pressure or air volume of the intermediate fan, and dried multiple clothes. A current detection circuit for detecting the number of operating units in a power supply circuit leading to the machine; controlling the number of rotations of the intermediate fan in accordance with the number of used clothes dryers detected by the current detection circuit; The intermediate fan and each clothes dryer are stopped based on the signal from the filter, and the alarm for filter cleaning or replacement is performed based on the signal from the differential pressure sensor. Providing the dynamic control circuit, discharge dehumidifier plurality Projectors clothing dryer according to claim. 2. The apparatus according to claim 1, wherein an alarm is issued based on a signal from a fan sensor.