JP4154468B2 - Air conditioning equipment in a printing room with a rotary press for newspaper printing - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is relatively large machine in the building, in particular relates to air-conditioning systems if they are installed is rotary press for newspaper printing, and more particularly, to generate the sensible heat and latent heat of the multi-volume newspaper The present invention relates to energy-saving air conditioning equipment for printing rooms .
[0002]
[Prior art]
When a relatively large machine is installed in a building, the air conditioning equipment is large in order to process the heat generated by the machine. For example, in a newspaper printing room where a rotary press is installed, it is required that the surface temperature and humidity of the roll paper for newspaper printing be appropriate, but sensible heat and latent heat are generated along with the operation of the rotary press. Because the printing room itself has a high ceiling height and a relatively large floor area, its air conditioning equipment has to be large.
[0003]
In general, newspaper printing roll paper is set on a rotary press in a paper feed chamber, and printed around the various printing rolls of the rotary press in the printing chamber (upper floor of the paper feed chamber). , It becomes the shape seen in the market in the final process of the rotary press. The newspaper that has completed printing is conveyed by a conveyor (usually to the shipping preparation room on the upper floor of the printing room) after confirmation by the quality inspector, and is carried to the dealer by a truck. In the printing room, quality inspectors perform sampling inspections every hour, and are constantly monitored by a paper surface inspection machine, and newspapers with uneven printing are removed from time to time. In addition, a monitor who constantly monitors the details of the rotary press is stationed in the printing room while the rotary press is in operation.
[0004]
In order to perform printing satisfactorily, the temperature and humidity of the surface of the roll paper for newspaper printing are required to be appropriate for a long time. For this purpose, the paper supply chamber is kept at a constant temperature and humidity of, for example, a dry bulb temperature of 26 ° C. and a relative humidity of 65%. Temperature and humidity vary slightly depending on the quality of the roll paper, but do not change significantly. As described above, the printing room requires air conditioners for workers because quality inspectors, rotary presses and other people live in the printing room.
[0005]
The load on the rotary press at the Sakai Printing Factory was 572 kW (sensible heat 446.5 kw, latent heat 125.5 kW) per set of rotary press. Including other air conditioning loads, it was 648 kW per set of rotary press. In the printing factory, the printing room is maintained at a dry bulb temperature of 27 ° C. and a relative humidity of 53.0% for those who live in the printing room. The number of daily prints per set of rotary press in this printing factory is about 75,000 copies. It will print 27 million copies per set per year. The electricity usage fee per set of rotary press is 149500 kw. The electricity usage fee per newspaper is 0.0055kw. The number of newspapers issued in Japan is approximately 53.68 million (as of October 2001), which means that 295,240 kW / day of electricity is used.
[0006]
The maximum allowable temperature of a rotary press is the same as that of general electric machines, and an indoor temperature of 40 ° C is allowed. The peak of newspaper printing is AM2: 00 to AM4: 00. The temperature of outside air in Tokyo during this time is 33.4 ° C or lower. In addition, according to the humidity measurement results at the Sakai Printing Factory, no trouble occurs in newspaper printing when the relative temperature is 75% or less. When the relative humidity exceeds 75%, dew condensation occurs on each part of the rotary press, and the dew condensation water falls on the newspaper, causing uneven printing on the newspaper. The uneven printing of the newspaper is eliminated as a defective newspaper by a newspaper inspection machine. That is, when the air conditioning equipment in the printing room is intended for a rotary press, the temperature may be 40 ° C. or less and the relative humidity is 75% or less.
[0007]
In practice, however, the conventional printing room air conditioning equipment is maintained at 27 ° C. and 53% relative humidity to ensure room conditions. This is because the flow line during the work of the people living in the printing room is not clear, and in order to improve the working environment of the printing room, air conditioning equipment that does not make the entire room uncomfortable is installed. Because there were many. For this reason, the air conditioning equipment required excessive investment. However, the printing room has a high ceiling height because the rotary press is installed through 3 to 4 flows in the vertical direction. Since several sets of equipment are installed side by side, the floor area also increases, so even if the overall temperature and humidity are adjusted with a large ceiling and a relatively large space, the living space for workers on the floor near the rotary press The environment is never good, and people in the printing room have been forced to work in a poor working environment.
[0008]
As an emergency measure, a method of spot air-conditioning only for a part where the worker stays at a specific place in the printing room for a relatively long time was adopted. However, if the worker moves, the working environment is poor. I had to be.
[0009]
[Problems to be solved by the invention]
Therefore, an object of the present invention is to provide an air conditioner for a newspaper printing room , in which a rotary press is installed, and there is a limit to improving the work environment of the worker even when a large-scale air conditioning facility is in operation. It is to provide equipment that can be air-conditioned in a small and energy-saving manner by improving so that only the space in which it resides can be maintained in a favorable environment.
[0010]
[Means for Solving the Problems]
According to the present invention, the problem is solved by constructing an air conditioning system in which the surrounding environment moves with the movement of a person. That is, according to the present invention, in the printing chamber mounted is a rotary press for newspaper printing in a building to accommodate the high pressure of the conditioned air only example 4 to 6 mmHg from room pressure press room under the floor of the printing room A paper feeding chamber is provided, and the heat generated inside the printing chamber is treated by taking in outside air into the printing chamber and exhausting from the printing chamber so that the entire air conditioning of the printing chamber is performed by taking in and exhausting outside air. Of all the floors in the printing room, a residential floor part where workers are often parked or moved while the rotary press is in operation is a blower having an area of 1/100 or less of the total area of the printing room floor. Each outlet unit comprises a perforated floor plate attached to the opening of the floor, a ventilation portion communicating between the perforated floor plate and the paper feed chamber, and a ventilation portion. Installed motordan It consists of a chromatography, characterized by blowing the motor damper conditioned air of the opening operation to the sheet feeding chamber from those該吹outlet unit to the printing chamber when the worker in outlet unit perforated on floorboards rests To provide air conditioning equipment for the printing room. Here, the air outlet unit includes a perforated floor board printing seated via a piezoelectric switch, a ventilation section communicating between the perforated floor board and the sheet feeding chamber, and a motor damper installed in the ventilation section. The piezoelectric switch senses whether an operator is on or not on the perforated floor plate of the outlet unit, and the motor damper opens and closes by the on / off signal, and the conditioned air in the sheet feeding chamber is opened and closed. It is preferable to start and stop the operation of blowing air from the air outlet unit into the printing chamber. Depending on the case, the motor damper may be opened and closed by a remote control switch carried by the worker, or a switch for opening and closing the motor damper is installed near the blowout unit so that the worker can move in the place where the worker has moved. You may make it operate the stitch.
[0011]
An air filter can be further installed in the ventilation portion of the outlet unit . Room overall conditioning to handle the load of the rotary press printing chamber can be carried out by the exhaust and outside air intake, it is conditioned while moving together with the movement of the operator only ambient environment with a worker it can.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0013]
FIG. 1 is a schematic cross-sectional view schematically showing the configuration of the main part of an air-conditioning equipment according to the present invention when the machine equipment is a newspaper printing press. This printing factory is arranged from a lower floor to an upper floor. The paper feed chamber, the printing chamber, and the shipping work chamber are formed in this order. The rotary press includes a paper feeder 1 installed in a paper supply chamber and a group of printing rolls 2 installed in several stages in the vertical direction in the printing chamber. The printed matter that has been printed from the paper feeder 1 through each printing roll 2 and passed through the final printing roll 2f passes through a paper surface inspection device 3 and a quality inspector's check, and is then transferred to the upper floor shipping work room by the conveyor 4. Carried. FIG. 1 shows a set of rotary presses configured in this way, but in practice, several sets of rotary presses are usually provided next to each other (in the front and back direction of the paper).
[0014]
The printing room has a ceiling height corresponding to about three floors because the printing rolls 2 of the rotary press are installed in multiple stages in the vertical direction. In the printing room where the rotary press is in operation, air conditioning has been conventionally performed so that the temperature is about 27 ° C. and the relative humidity is about 53% because of the residence of workers. In order to maintain this temperature and humidity, a large-scale air conditioning system was required because a large amount of heat was generated in the printing room where several sets of rotary presses were operating and the printing space was relatively large.
[0015]
In the present invention, such large-scale printing room air-conditioning equipment is omitted, and instead of this, the load of the rotary press is handled by taking in and exhausting outside air. Only around workers moving with the movement of
[0016]
First, outside air is taken in and exhausted into the printing room in order to handle the load of the rotary press. Ventilation equipment for this purpose is housed in the ventilator rooms 5 and 6. Both the ventilator chambers 5 and 6 are provided with a blower 7 and a ventilator 8 capable of controlling the number of revolutions, and the outside air is driven from the outside air inlet through the eliminator 9 and the filter 10 through the air inlet 11 by driving the blower 7. Supplied into the printing chamber. Further, the air in the printing chamber is discharged from the exhaust system 12 by driving the exhaust fan 8. A motor damper 13 for closing the wind tunnel is installed in the duct on the outside air, and a temperature sensor and a humidity sensor are installed in the duct on the exhaust side. Used as a control device to maintain.
[0017]
With this outside air intake and exhaust treatment, the temperature and humidity conditions of the printing chamber are set to a room temperature of 40 ° C. or less and a room relative humidity of 75% or less for a rotary press. That is, the outside air intake amount by the blower 7 and the exhaust amount by the exhaust fan 8 are controlled so that the room temperature does not exceed 40 ° C. and the relative humidity does not exceed 75%. Under these temperature and humidity conditions, the outside air can be cooled throughout the year, and a large-scale air conditioner such as an air handling unit that has been conventionally used can be made unnecessary for a printing room.
[0018]
The people who live in the printing room (quality manager and press monitor) will be air-conditioned so that the comfortable space moves to the place where they move. In the present invention, an air outlet unit 15 for workers is adopted as a method for moving the comfortable work space.
[0019]
The air outlet unit 15 for workers is installed at the feet of people living in the printing room. One person lives in the printing room at about 55 m ² and repeats moving according to the work contents. When an operator gets on the air outlet unit 15 in the moved place, the piezoelectric switch of the unit 15 is changed depending on the weight of the worker. The unit 15 is turned on, and conditioned air is supplied from the unit 15 toward the worker. When the operator gets out of the unit 15, the piezoelectric switch of the unit 15 is turned off, and the supply of conditioned air from the unit 15 is stopped.
[0020]
FIG. 2 illustrates an example of the air outlet unit 15. An opening 17 of about 0.5 to ² m ² is provided on the floor 16 (slab) separating the printing chamber and the paper feeding chamber. A perforated floor board 18 is seated on 17 via a piezoelectric switch 19. Reference numeral 20 denotes a level adjusting table for the perforated floor board 18. The opening 17 provided in the floor 16 of the printing room communicates with the sheet feeding room. For this reason, if the sheet feeding room is at a higher pressure than the printing room, the opening 17 and the perforated floor plate 18 pass from the sheet feeding room to the printing room. Air flows in naturally. As a mechanism for starting and stopping this air flow, a box 22 having a motor damper 21 is attached to the opening 18. The opening / closing operation of the motor damper 21 is controlled by the on / off signal of the piezoelectric switch 19. In FIG. 2, reference numeral 24 denotes a motor for opening and closing the damper, and the operation of the motor 24 is controlled by an operation signal from a control panel (not shown). The operation signal is transmitted based on an on / off signal sent from the piezoelectric switch 19 to the control panel.
[0021]
That is, by providing each air outlet unit 15 with a piezoelectric switch 19 and a motor damper 21, when an operator 23 gets on the perforated floor plate 18 of the unit 15, the piezoelectric switch 19 enters and the motor damper 21. Is opened, the piezoelectric switch 19 is turned off and the motor damper 21 is closed, so that air is blown out from the high pressure side paper supply chamber around the worker 23 on the perforated floor board 18. become. At that time, by placing a filter 25 in the air passage of the unit 15, paper waste and ink mist generated during operation of the rotary press can be supplemented. Since the captured paper waste and ink mist are viscous, there is little risk of re-scattering by the air blown from the unit 15.
[0022]
By connecting the air outlet unit 15 configured in this way to the floor portion where workers are often parked or moved while the rotary press is in operation, the workers can move from the supply chamber to the workers. The movement of the air blowing toward is also moved. If the blown air is conditioned air whose temperature and humidity are adjusted, the conditioned air supplied from the air outlet unit 15 covers the worker and a comfortable working environment is formed around the worker. . This comfortable working environment moves with the movement of the worker.
[0023]
FIG. 3 is a plan view showing a connection mode of the air outlet unit 15 formed on the floor around the rotary press, and corresponds to a cross-sectional portion taken along the line XY in FIG. An air outlet unit 15 is connected to the front floor portion where the quality inspector lives facing the rotary roller 2 and the side floor portion where the rotary press monitor often moves to the side of the rotary roller 2. By connecting the air outlet units 15 to each other, a passage through which an operator lives or moves is formed on a part of the printing room floor.
[0024]
FIG. 4 shows the connection mode of the air outlet unit 15 when a plurality of sets of rotary presses are installed adjacent to each other. In the case of a plurality of sets, as in the case of FIG. On the floor around the turning machine, a passage through which an operator resides or moves is formed by a connecting body of the air outlet unit 15.
[0025]
FIG. 5 is a plan view of a printing room floor 26 on which five sets of rotary presses are installed, and a portion 27 shown by hatching is moved or moved on by an operator of the air outlet unit connecting member. Shows the passage. As can be seen in this figure, the passage portion 27 where the worker lives or moves is only a small part when viewed from the entire area of the printing room floor 26. Moreover, in the passage portion 27, there are several air outlet units on which the worker actually rides. The part of the unit on which the worker is riding is shown at 28. The area of the unit portion 28 on which the operator is riding is extremely small from the total area of the printing room floor 26, and is, for example, 1/200 or less of the total area, and in some cases 1/100 or less (in practice, 1/110). Degree). Only a very small part where this worker is living or moving is maintained in a comfortable environment. In a high ceiling space, the space maintained in this comfortable environment is very small. For example, it is necessary to supply air only to a space of 1/300 or less of the entire indoor space, or in some cases, 1/200 or less. Only a small amount of power is required to produce conditioned air.
[0026]
In the above-described embodiment, an example in which the piezoelectric switch 19 is operated by the weight of the worker in order to blow out the conditioned air only from the air outlet unit on which the worker is riding, but instead of the piezoelectric switch 19, An operator may carry a remote control switch and operate the switch at the location where the operator has moved to open and close the motor damper 21 at that location. In addition, a switch for opening and closing the motor damper 21 is installed in the vicinity of each air outlet unit 15, and when the switch is operated by an operator (for example, by stepping on the switch in a moved place) The local motor damper 21 may be opened and closed.
[0027]
In order to naturally blow out conditioned air only from an air outlet unit on which an operator is riding, in the present invention, the paper supply chamber below the printing chamber is used as a conditioned air supply chamber. In other words, a pressure difference is applied between the paper supply chamber and the printing chamber, and the air pressure outlet unit in which the worker rides conditioned air in the air supply chamber from the paper supply chamber using this differential pressure. After that, it is supplied around the workers. The paper feed chamber is generally unattended when the rotary press is in operation. Further, since the rotary press automatically feeds paper, there is no problem even if the room pressure is increased.
[0028]
Below, the equipment configuration in the case of using this paper supply chamber as a conditioned air supply chamber will be described in detail with reference to FIG.
[0029]
Air conditioning machine rooms 30a and 30b are provided for adjusting the pressure, temperature, and humidity of the air in the sheet feeding chamber. In FIG. 1, two air-conditioning machine rooms 30a and 30b are depicted on the left and right, but the facilities installed in both are substantially the same. However, the right air-conditioning machine room 30a is provided so as to supply and exhaust air not only to the paper supply room but also to the differential pressure adjustment room 31. The differential pressure adjusting chamber 31 is installed so as to surround the entrance / exit 32 to the sheet feeding chamber.
[0030]
In the air conditioning machine rooms 30a and 30b, an air handling unit 33 (referred to as an air conditioner 33) is installed as an air conditioner, and conditioned air produced by the air conditioner 33 is sent from the air supply port 34 to the paper feed chamber. The On the other hand, the air in the sheet feeding chamber is discharged out of the system from the exhaust port 35 by the exhaust fan 36, and a part thereof is returned to the air conditioner 33 as return air. In addition to this return air, outside air is taken into the air conditioner 33 by the fan 37. A motor damper 38 is interposed in the exhaust duct near the exhaust port 35. In addition, an air volume adjusting damper 39 is interposed in the outside air duct and the exhaust duct.
[0031]
The motor damper 38 and the air volume adjusting damper 39 are used to increase the chamber pressure in the sheet feeding chamber. At the time of starting the equipment, the air volume adjusting damper 39 adjusts the air supply air volume to be larger than the exhaust air volume to increase the chamber pressure of the paper feed chamber. When the pressure difference between the paper supply chamber and the printing chamber is continuously detected by the differential pressure detector 40 and the chamber pressure in the paper supply chamber becomes higher than the set value range, the motor damper 38 is opened in the opening direction, When it becomes low, it closes in the closing direction and maintains the chamber pressure in the sheet feeding chamber within the set range.
[0032]
A chamber pressure adjusting damper 41 is installed between the printing chamber and the sheet feeding chamber. The chamber pressure adjusting damper 41 functions to adjust a slight differential pressure between the two chambers, and also functions as a safety device in the event of some trouble in the chamber pressure control by the motor damper 38.
[0033]
When an abnormality occurs in the automatic paper feeder in the paper feed chamber, maintenance personnel enter the paper feed chamber, but the door of the doorway 32 interferes with opening and closing due to the indoor pressure. For this purpose, a pressure adjusting chamber 31 is provided between the entrance 32 and before entering the sheet feeding chamber. The differential pressure detector 42 detects the pressure difference between the pressure adjusting chamber 31 and the printing chamber so that the differential pressure falls within the set range, that is, the chamber pressure is lower than that of the paper feeding chamber but lower than that of the printing chamber. The amount of air supplied to the pressure adjusting chamber 31 and the amount of exhaust discharged from the pressure adjusting chamber 31 are controlled in the same manner as described above so that the pressure becomes high. A chamber pressure adjusting damper 43 is installed between the pressure adjusting chamber 31 and the sheet feeding chamber to enhance the safety in the event of any trouble in the fine differential pressure adjustment between the two chambers and the differential pressure control. Further, it is preferable to install a room pressure adjusting damper 44 between the pressure adjusting chamber 31 and the air conditioning machine room 30a.
[0034]
In this way, during operation of the rotary press, conditioned air is supplied from the air conditioner 33 to the sheet feeding chamber, and the pressure in the sheet feeding chamber by the conditioned air is a pressure higher by, for example, 4 to 6 mmHg than the printing chamber. As a result, the conditioned air is blown out around the workers in the printing chamber only from the air outlet unit 15 on which the operator gets. It can be moved with. A chamber pressure adjusting chamber is also provided at the entrance / exit of the worker to the paper supply chamber, such that the pressure is higher by 2 to 3 mmHg than the printing chamber and lower by 2 to 3 mmHg than the paper supply chamber, for example. , There is no hindrance to the entry / exit of the worker, and the pressure fluctuation of the sheet feeding chamber due to the entry / exit of the worker can be avoided.
[0035]
In a certain newspaper printing factory, the amount of electricity used for air conditioning equipment per newspaper is about 0.0053 kW. In Japan, about 53,680,000 copies / day are published in Japan (as of October 2001), so the amount of electricity used per day is about 259,240 kW nationwide. When the air-conditioning system of the present invention is applied, about 0.0026 kw of power can be consumed per newspaper, and the amount of electricity used per day is about 139,568 kw nationwide. Saving 155,672 kW of electricity per day. Moreover, since the scale of the air-conditioning equipment according to the present invention is small, the cost of the equipment is reduced by about 52% compared with the conventional one when it is calculated at the Sakai Shimbun Printing Factory where the conventional air-conditioning equipment is introduced. Can do.
[0036]
When the air-conditioning equipment of the present invention is applied to a newspaper printing factory, the equipment cost and the operating cost can be greatly reduced as described above. However, the same thing can be said because there are a small number of workers in a large area. Even when the present invention is applied to spaces and factories that often move around, such as hotel lobbies, atriums, indoor stadiums, steelworks, automobile assembly factories, and other factories, the cost of equipment for air conditioning can be reduced. The operating cost can be greatly reduced.
[0037]
【The invention's effect】
As described above, according to the present invention, in a large area and large space where a machine that generates sensible heat and latent heat, such as a rotary press, is present, according to the movement of the person living therein, Only the surrounding environment can be moved. For this reason, the air conditioning load on the resident is extremely small when viewed from the whole space, and the equipment cost and operating cost for air conditioning can be significantly reduced.
[Brief description of the drawings]
FIG. 1 is an equipment layout diagram when an air conditioning system according to the present invention is applied to a newspaper factory.
FIG. 2 is a schematic cross-sectional view showing an example of an air outlet unit according to the present invention.
FIG. 3 is a schematic plan view showing a mode in which an air outlet unit according to the present invention is connected to a floor.
FIG. 4 is a schematic plan view showing another aspect of connecting the air outlet unit according to the present invention to the floor.
FIG. 5 is a plan view showing an example in which a movement passage for a worker in a printing chamber is formed by the air outlet unit according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Paper feeder 2 Printing roll 3 Paper surface inspection device 4 Conveyors 5, 6 Ventilator room 7 Blower 8 Ventilator 9 Eliminator
10 Filter
11 Air inlet
12 Exhaust vent
13 Motor damper for closing wind tunnel
15 Air outlet unit
16 Floor 16 (Slab)
17 Floor opening
18 perforated floorboard
19 Piezoelectric switch
21 Motor damper
22 box
25 Filter
30 Air conditioning machine room
31 Differential pressure adjustment chamber
32 Entrance to the paper supply room
33 Air handling unit (air conditioner)
34 Air supply port
35 Exhaust port
36 Air exhaust
37 Juan
38 Motor damper
39 Air volume adjustment damper
40,42 Differential pressure detector
41,43,44 Chamber pressure adjustment damper

Claims (7)

In the printing chamber mounted is a rotary press for newspaper printing in a building, a paper feed chamber for accommodating the pressure conditioned air from the room pressure press room under the floor of the press room is provided, the entire room air-conditioning of the printing chamber to perform outside air intake and the exhaust, and configured to handle the load of the internally generated heat of the press room by the exhaust from the outside air intake and the press room to the press room, of the total floor of the press room, wheel The living floor part where workers are often parked or moved during the operation of the turning machine is composed of connecting units of the outlet unit having an area of 1/100 or less of the total area of the printing room floor. Consists of a perforated floor plate attached to the opening of the floor, a ventilation portion communicating between the perforated floor plate and the paper feeding chamber, and a motor damper installed in the ventilation portion. Perforated floorboard The motor damper opening operation to press room air conditioning equipment, characterized by blowing the conditioned air of the feeding chamber to the print room from those該吹outlet unit when the operator is riding on. The air outlet unit is composed of a perforated floor plate seated via a piezoelectric switch, a ventilation portion communicating between the perforated floor plate and the paper feeding chamber, and a motor damper installed in the ventilation portion. The piezoelectric switch senses whether or not an operator is on the perforated floor plate of the air outlet unit, and the motor damper opens and closes according to the on / off signal, and conditioned air in the paper supply chamber is discharged from the air outlet. The air conditioning equipment for a printing chamber according to claim 1, wherein the operation of blowing from the unit into the printing chamber is started and stopped. The air conditioner for a printing room according to claim 1, wherein the motor damper is opened and closed by a remote control switch carried by an operator. The air conditioning equipment for a printing chamber according to claim 1, wherein a switch for opening and closing the motor damper is installed in the vicinity of the blowout unit. The air conditioning equipment for a printing chamber according to any one of claims 1 to 4, wherein an air filter is further installed in the ventilation portion of the air outlet unit. 6. The worker enters or exits the paper supply chamber through a pressure control chamber, and the pressure control chamber and the paper supply chamber are adjusted to have a differential pressure through a chamber pressure adjustment damper . press room of the air conditioning installation according to. The press room paper feed chamber, printing room air conditioning according to any one of claims 1 to 6, paper feed chamber is controlled to the differential pressure range of the pressure by 4 to 6 mmHg from the printing room.

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