JP2015000115A - Drying system in continuous washing facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drying system in a continuous washing facility which enables efficient drying by detecting the amount of residual water in washed articles.SOLUTION: A drying system in a continuous washing facility includes: first weight measuring means 11 for measuring the weight of articles to be washed; a continuous washing machine 13 for washing the articles to be washed; a dewaterer 14 for dewatering the washed articles; second weight measuring means 15 for measuring the weight of the washed articles dewatered; a dryer for drying the washed articles; and a control device 18 for obtaining measurement data from the first weight measuring means and the second weight measuring means. The control device calculates the total amount of heat required for drying the washed articles from the amount of residual water in the washed articles obtained by subtracting the measurement data of the first weight measuring means from the measurement data of the second weight measuring means, and sets a steam pressure, an airflow volume, a temperature, the number of revolutions, or a drying time when the dryer dries the washed articles.

Description

  The present invention starts from separation of objects to be washed, and in continuous washing facilities from washing in a continuous washing machine, dehydration, and drying in a dryer, prevents stagnation and delay of the washing objects in the drying process and saves energy. It is related with the system which can operate a dryer more efficiently.

  Conventionally, in a continuous laundry facility, items to be washed that are first separated by type and washed in a continuous washing machine are dehydrated by a dehydrator after being taken out of the continuous washing machine, and then preset according to the type of the item to be washed. It is sent to the drying process using the dried dryer. This continuous washing machine is to operate by setting the type and amount of the laundry to be put in advance, and the conditions in which the dryer is also set (air volume, vapor pressure, rotation speed, drying time, etc.) It is a system that operates continuously.

However, in the drying process of the object to be washed, for example, if the pressure (amount) of the steam used is low (small), the temperature is lowered and the object to be washed cannot be completely dried. Although the vapor pressure is set, this has a problem that wasteful vapor is consumed.
Therefore, continuous washing that can be properly and economically dried by measuring the weight of the object to be washed before putting it in the washing machine and setting the vapor pressure and the rotational speed of the dryer according to this weight. Equipment has been devised. (See Patent Document 1).

JP-A-2005-130918

  However, although the amount of residual water in the object to be washed varies greatly depending on the type and material of the item to be washed (material type, thickness, size, etc.) and the input amount, Since only the weight of the object to be washed before washing is measured, it was not always possible to set appropriate and economical drying conditions.

In addition, the items to be washed after washing and dehydration are dried by selecting a dryer that is vacant or immediately available from a plurality of dryers. When it is in operation, the washing process has been slowed so that the object to be washed does not stay.
However, increasing the air volume and vapor pressure to finish drying quickly consumes a lot of energy and also adds a high temperature exceeding 150 ° C to the item to be washed, which damages the fabric and shortens its life. There was a risk of it. In addition, it is not preferable to slow down the processing in the previous step so that the article to be washed does not stay, because the processing ability is lowered.
On the other hand, even if there is a margin in the operation of the dryer, the drying program for the dryer is generally constant, especially when the steam pressure is reduced or the steam pressure or air volume of the dryer is reduced to reduce energy consumption. It was never done.

  The present invention has been made in view of such circumstances, and can efficiently dry by detecting the residual moisture content or type and input amount of the washing object, and refer to the operating rate of the drying process. It is an object of the present invention to provide a drying system in a continuous laundry facility that is suitable for energy saving.

  As a result of diligent research in view of the above problems, the present inventor has made it possible to continuously wash the washing object under optimum conditions by calculating an appropriate drying condition according to the residual moisture content of the washing object. It came to devise the drying system in equipment.

That is, the present invention provides a continuous washing machine, a dehydrator, and a dryer, and in a drying system in a continuous laundry facility for continuously washing, dehydrating, and drying an object to be washed before being put into the continuous washing machine. A first weight measuring means for measuring the weight of the product, a continuous washing machine for washing the washing object whose weight is measured by the first weight measuring means, a dehydrator for dehydrating the washing object after washing, Second weight measuring means for measuring the weight of the dehydrated object to be washed, a dryer for drying the object to be washed whose weight is measured by the second weight measuring means, the first weight measuring means and the second weight measuring means. And a control device for acquiring measurement data from the weight measurement means, wherein the control device is a residue of the washing object obtained by subtracting the measurement data of the first weight measurement means from the measurement data of the second weight measurement means. Calculate the total amount of heat required to dry the item to be washed from the amount of water,燥機 is characterized by setting the steam pressure, air flow, temperature, rotational speed, or drying time for drying the object to be washed product.
As a result, it is possible to provide an energy-saving and suitable drying system in which the control device detects the residual moisture content of the object to be washed and can be efficiently dried by the dryer with an appropriate energy amount that is not excessive or insufficient.

Moreover, the drying system in the continuous washing facility of the present invention includes a first weight measuring means, a continuous washing machine, a dehydrator, and a second weight measuring means in a state where the objects to be washed are grouped for each predetermined weight. It is transported in the order of the dryer.
Thereby, the control device can accurately calculate the residual moisture content of the object to be cleaned, and can dry the object to be cleaned under a proper drying condition by the dryer.

Further, in the drying system in the continuous washing facility of the present invention, the control device detects the operation status of the entire plurality of dryers, and when there is a margin in the operation status, reduces the steam pressure, the air volume or the rotation speed of the dryer. Set the drying time longer than the standard time set in advance, and if there is no room in operation, set the drying time shorter than the standard time by increasing the steam pressure, air volume or rotation speed of the dryer. It is characterized by that.
As a result, the drying time of the dryer is appropriately set according to the operation status of the entire dryer in the continuous washing facility, and the smooth flow and energy saving measures are performed by preventing the staying and delay of the washing object. be able to.

In the drying system in the continuous laundry facility of the present invention, since the dryer has a large amount of residual moisture in the washing object at the beginning of drying, the inner cylinder rotation speed is increased so that hot air passes through the washing object in a large amount. In addition, as the drying progresses, the object to be washed gradually dries and becomes lighter while increasing its volume, so that it is possible to reduce the number of rotations step by step and perform proper drying in a short time. .
Thereby, a to-be-washed | cleaned material can be dried appropriately in a short time efficiently.

It is a system diagram of the drying system in the continuous laundry equipment of the present invention. It is a flowchart of the drying system in the continuous washing equipment of this invention.

  Hereinafter, the form for implementing the drying system in the continuous washing equipment of the present invention is explained in detail, referring to drawings. 1 and 2 are diagrams illustrating an embodiment of the present invention.

FIG. 1 shows a drying system in a continuous laundry facility according to the present invention.
The drying system in the continuous washing facility sorts the items to be washed into different types, puts them on the weighing conveyor, puts a specified amount of items into the bag for each type, and continuously washes the items to be washed for each bag. The present invention relates to a series of continuous washing facilities in which a laundry to be washed is dehydrated with a dehydrator, and the dehydrated laundry is dried with a dryer.

Based on the system diagram of FIG. 1, a drying system in a continuous laundry facility according to the present invention will be described.
First, the items to be washed are sorted by type. In addition to items such as towels, sheets, pillowcases, yukata, etc., for example, the same sheet is made of 100% cotton, blended (65% cotton, 35% polyester), blended (50% cotton, With 50% polyester), the bulk (volume) at the same weight is different, and the moisture content and the degree of drying are also different. Therefore, considering the washing efficiency and the drying efficiency, it is necessary to make a fine classification for each type of item to be washed. It has become a thing.

The first weight measuring means 11 measures a weight by storing a predetermined weight (for example, 50 kg) of objects to be washed and conveyed by conveyor for each type. The weight measurement data for each type is sent to the control device 19 described later.
Then, the object to be washed having a predetermined weight is dropped into the hopper by the bag loading means 12 and placed in a large bag-like bag. This bag is sent to a temporary standby place (not shown) provided with a conveyance path, and waits for the turn to the next process (continuous washing machine). In this temporary standby place, although bags for storing different types of items to be washed are mixed, the control device 18 for controlling the position of the conveyance path and the type of the items to be washed is a continuous washing machine for the items to be washed. 13 is controlled (order, time interval).

Then, the objects to be washed are conveyed to the continuous washing machine 13, taken out from the bag, and sequentially put into the continuous washing machine 13 in units of bags.
The dehydrator 14 puts the items to be washed in units of bags taken out from the continuous washing machine 13 after washing is completed, and dehydrates it.
Next, the second weight measuring means 15 measures the weight of the dewatered bag-by-bag washing object and sends the measurement data to the control device 18.

  The control device 18 selects a drier 17 that can be received from a plurality of driers, and causes the drier 17 to convey the article to be washed on the conveyor 16. The drier 17 dries the article to be washed on a bag basis. .

At this time, the control device 18 subtracts the measurement data (dry weight) of the first weight measurement means 11 from the measurement data (dry weight + water content) of the second weight measurement means 15, thereby washing each bag unit. Calculate the residual moisture content of the product.
And the control apparatus 18 calculates the total calorie | heat amount required for drying of a to-be-washed object from the data of the classification | category of the to-be-washed | cleaned object, dry weight, and a residual moisture content, from this, and optimal drying conditions ( Air volume, vapor pressure, inner cylinder rotation speed, drying time, etc.) are determined, and the data is sent to the dryer 17 for drying the object to be washed.
In this dryer, the condition (air volume, vapor pressure, inner cylinder rotation speed, drying time, etc.) for drying with an appropriate energy amount without excess or deficiency for each type of item to be washed and the amount of residual moisture is set in the control device 18 in advance. By setting the input, the optimum drying conditions can be obtained instantaneously from the data of the object to be washed.
Further, as one of the drying conditions, the optimum inner cylinder rotation speed of the dryer 17 can be set based on the weight data measured by the second weight measuring means 15.
Moreover, about drying time, it can set based on the weight data which the 2nd weight measurement means 15 measured, and the operating condition of the several dryer mentioned later.

As control of dryer selection in the control device 18, if there are empty ones among a plurality of dryers, the conveyor 16 is driven to dry the objects to be washed there, and there is no dryer available at that time. In such a case, the objects to be washed are transported in the order of the dryers with the earlier scheduled drying end time.
Further control of the dryer of the control device 18 is to detect the overall operation status of a plurality of dryers, and there is room in the operation status, and the drying time is set to a standard setting (the optimum drying condition). When it is determined that the length can be increased, the air flow of the dryer 17 is reduced and the steam amount is reduced to operate, thereby saving energy. On the other hand, if there is no room in the operation status of the entire dryer, the air volume or the rotational speed of the dryer 17 to be used is increased and the drying time is set to be shorter than the standard time, so that the stagnation / delay of the washing object is achieved. Can be prevented. However, if the drying temperature exceeds 160 ° C, the fabric may be damaged and the life may be shortened. Therefore, when there is a margin in the operation of the dryer, the drying temperature is set to 160 ° C or lower.

  In addition, in the dryer 17, since the residual moisture content of the washing object is large and heavy (bulk specific gravity is large) at the beginning of drying, the inner cylinder rotates so that hot air passes through the washing object in a large amount. If the number is increased, and the drying progresses, the object to be washed gradually dries and becomes lighter while increasing its bulk (the bulk specific gravity decreases). It is assumed that it has a function of performing proper drying while shortening.

FIG. 2 is a flowchart of the drying system in the continuous laundry facility of the present invention.
In the first step, first, the items to be washed before washing are sorted automatically or manually for each type of material (101).
In the second step, the separated objects to be washed are transported by a weighing conveyor, the weight is measured, and a predetermined amount is put into a bag (102). The measured weight data and type data of the item to be washed are sent to the control device 18.
A 3rd process conveys the to-be-washed object for every bag to the continuous washing machine 13, opens a bag, throws in to-be-washed object, and is washed (103).
In the fourth step, the items to be washed in one bag unit after washing are conveyed to the dehydrator 14 and dehydrated (104).
In the fifth step, the weight of the dehydrated one bag unit is measured (105), and a dryer 17 that can be received by the controller 18 is selected from a plurality of dryers, and the item to be washed is put in. The measurement data is sent to the control device 18.
In the sixth step, the control device 18 calculates the residual moisture amount by comparing with the weight before washing in the above two steps to obtain the total heat amount necessary for drying (106).
In the seventh step, the drying time (usually 20 to 30 minutes) in the dryer 17 is calculated from the total amount of heat necessary for drying calculated in the previous step (107).
In the eighth step, when the control device 18 determines that the entire drying process has a margin in consideration of the operation status of other dryers, the air volume and vapor pressure are appropriately reduced to lower the temperature, and the drying time (For example, the portion that can be dried in 20 minutes is extended to 30 minutes) (108).
For items to be washed, the level of temperature during drying greatly affects the fabric, and if drying efficiency is the top priority, it is desirable to process at a high temperature in a short time. In addition to consuming a lot of energy, raising the fabric could damage the fabric and shorten its life. Therefore, when there is a margin in the operation of the dryer or when considering that the washing object is not damaged, the drying temperature is required to be set to 160 ° C. or less, and the control device 18 does not have such a dryer. 17 is driven.

  In the ninth step, the moisture of the object to be washed evaporates and becomes lighter as the drying progresses, so that the inner cylinder rotational speed of the dryer 17 increases with the progress of time (109), and the predetermined time is reached. When it has passed, the process ends.

  As mentioned above, although the specific embodiment was shown and demonstrated about the drying system in the continuous washing facility of this invention, this invention is not limited to these. A person skilled in the art can make various changes and improvements to the configuration and function of the drying system in the continuous laundry facility in each of the above embodiments without departing from the scope of the present invention.

  The drying system in the continuous laundry facility of the present invention can be used in industries that manufacture continuous laundry facilities.

11: First weight measuring means 12: Bag throwing means 13: Continuous washing machine 14: Dehydrator 15: Second weight measuring means 16: Conveyor 17: Dryer 18: Control device

Claims (4)

In a drying system for a continuous washing machine equipped with a continuous washing machine, a dehydrator, and a dryer, and continuously washing, dehydrating and drying the washing object,
First weight measuring means for measuring the weight of an object to be washed before putting into the continuous washing machine, a continuous washing machine for washing the object to be washed whose weight is measured by the first weight measuring means, and washing is completed A dehydrator for dehydrating the washed object, a second weight measuring means for measuring the weight of the dehydrated washed object, and a dryer for drying the washed object measured by the second weight measuring means. A control device for obtaining measurement data from the first weight measuring means and the second weight measuring means,
The control device calculates the total amount of heat required to dry the washed object from the residual moisture content of the washed object obtained by subtracting the measured data of the first weight measuring means from the measured data of the second weight measuring means. A drying system in a continuous laundry facility that calculates and sets a steam pressure, an air volume, a temperature, a rotation speed, or a drying time when the dryer dries the article to be washed.   The object to be washed is conveyed in the order of a first weight measuring means, a continuous washing machine, a dehydrator, a second weight measuring means, and a dryer in a state of being grouped for each predetermined weight. The drying system in the continuous laundry facility according to claim 1.   The control device detects the operating status of the entire plurality of dryers, and if there is a margin in operating status, it reduces the steam pressure, air volume, or rotation speed of the dryer and sets the drying time to a preset standard time. 3. The drying time is set shorter than the standard time by increasing the steam pressure, the air volume, or the number of rotations of the dryer when the operating condition is not long enough. Drying system in a continuous laundry facility.   Since the dryer has a high residual moisture content at the beginning of drying, the inner cylinder rotation speed is increased so that hot air passes through the object to be cleaned. 4. The continuous drying according to any one of claims 1 to 3, wherein the drying is carried out in a short time by decreasing the rotational speed step by step because it is lightened while increasing its volume. Drying system in laundry facilities.