JPH0745547Y2 - Heating / pressurizing device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating / pressurizing device used for heating and pressurizing various objects to be heated.

[0002]

2. Description of the Related Art For example, in windows of buildings and windows of automobiles,
Laminated glass is used. This laminated glass is
A resin film is interposed between two glass plates, which are placed in a heater and heated under pressure, whereby both glass plates are joined and integrated with the resin film.

Conventionally, a heating device as shown in FIGS. 6 and 7 has been used for the heat treatment of an object to be heated such as laminated glass. This heating device has a relatively large pressure-resistant tank, for example, a diameter of 3
m has a tank 60 having a length of 5 m, a heating heat transfer tube 61 for flowing a heating medium such as steam, and a cooling heat transfer for flowing a cooling medium such as water inside the tank 60. A plurality of pairs of tubes 62 are provided, and a drip-proof plate 63 that covers these heat transfer tubes 61, 62 is provided. When a lid 60a is opened on the floor 64 to take in and out the object to be heated. A rail 65 for moving the truck is provided. The object to be heated placed on the truck is accommodated in the tank 60, and compressed air is supplied from the compressed air source 66 to increase the internal pressure of the tank, and at the same time, vapor The steam is supplied from the source 67 to the heating heat transfer tube 61 to heat the object to be heated, and when the heating is finished, the cooling water is supplied from the cooling water source 68 to the cooling heat transfer tube 62 while the internal pressure is reduced. Cool inside 60 and cool Tank 6 after the object to be heated ended
It is designed to be taken out from 0.

However, in the conventional heating device, since the heat transfer tubes 61 and 62 for heating and cooling are covered with the drip-proof plate 63, the drip-proof plate 63 transfers heat to the air in the tank 60. Heat transfer due to direct contact with the tubes is hindered, and the actual heat transfer area is the heat transfer tube 6 with fins.
The surface area of the drip-proof plate 63 is not the surface area of 1, 62, and the heat transfer efficiency is poor. Although a propeller fan 69 that causes convection of air is provided inside the tank 60, merely agitating the air in the tank 60 does not help the heat transfer efficiency.

Further, the control of temperature increase, pressure increase, heat retention, pressure retention, temperature decrease, pressure decrease, etc. in the tank is up to the on / off control of the control valve, so that it depends on the type of object to be heated. It was not possible to select or change the temperature or pressure pattern.

[0006]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The object of the present invention is to ensure good contact between the heat transfer tube and the air in the tank and to improve the heat transfer efficiency. It is to provide a heating / pressurizing device that can be controlled in an optimum pattern.

[0007]

In order to solve the above-mentioned problems, the present invention has a tank for accommodating and heating an object to be heated, and the tank is provided along the inner wall surface of the tank with the inner wall surface. An air passage plate for partitioning and forming an air passage is arranged, a heat transfer tube for flowing a heating medium or a cooling medium is arranged in the air passage, and the air in the tank is sucked into the air passage to transfer heat. It is characterized in that a fan that circulates along the tube and then blows out into the tank is provided, and that the air passage plate is provided with the air inlet and the air outlet.

The heat transfer tube is commonly used for flowing a heating medium and a cooling medium, and has a first port serving as an inlet of the heating medium and an outlet of the cooling medium at one end thereof, and the outlet of the heating medium at the other end. And a second port that also serves as an inlet of the cooling medium, and it is desirable to arrange the first port side in an inclined state so that the first port side is gradually higher than the second port side.

Further, in the tank, a temperature adjusting mechanism for adjusting the internal temperature of the tank by supplying a heating medium or a cooling medium to the heat transfer tube, and a pressure adjusting mechanism for adjusting the internal pressure of the tank by supplying / discharging compressed air. By connecting the mechanism and the control means for controlling the temperature adjusting mechanism and the pressure adjusting mechanism according to a predetermined program, the internal temperature and pressure can be controlled according to the type of the object to be heated.

[0010]

[Function] The object to be heated such as laminated glass is carried into the tank, the heating medium is supplied to the heat transfer tube while the pressure in the tank is increased, and the temperature of the air in the tank is raised to heat the object to be heated. To do. At this time, the propeller fan in the air passage rotates, sucks the air in the tank into the air passage from the suction port, forcibly flows between the heat transfer tubes along the air passage, and the heat is generated by contact with the heat transfer tube. Since the exchanged air is ejected from the air outlet at the lower end of the air duct into the inside of the tank, the heat transfer efficiency between the heat transfer tube and the air is high, and the entire tank quickly and uniformly has a uniform temperature distribution. Further, the internal temperature and pressure of the tank are adjusted by controlling the temperature adjusting mechanism and the pressure adjusting mechanism by the control means according to a predetermined program.

[0011]

Embodiments of the heating / pressurizing device according to the present invention will be described in detail below with reference to the drawings. In FIG.
Reference numeral 1 is a tank having a pressure resistant structure for accommodating an object to be heated such as laminated glass and heating under pressure, and 2 is a steam as a heating medium or a cooling water as a cooling medium is supplied to adjust the internal temperature of the tank. A temperature adjusting mechanism 3, a pressure adjusting mechanism for adjusting the internal pressure of the tank 1 by supplying and discharging compressed air, and 4 a control means for controlling the temperature adjusting mechanism and the pressure adjusting mechanism according to a predetermined program.

As is apparent from FIG. 2, the tank 1 has a lid portion 1a at the front end which can be opened and closed by a fluid pressure cylinder, and a rail for moving a carriage on the floor 8 inside the lid portion 1a. 9 is provided so that the object to be heated can be placed on and taken out of the trolley with the lid 1a opened. Further, inside the tank 1, an air passage plate 11 that partitions and forms an air passage 10 between the inner wall surface and the inner wall surface is disposed, and inside the air passage 10, the air passage plate 11 of the tank 1 is formed. A plurality of heat transfer tubes 12 extending in the length direction are arranged side by side, and the air in the tank 1 is sucked into the air passage 10 to flow downward between the heat transfer tubes 12 and then blown out again into the container. A propeller fan 13 is arranged so as to be located at the top of the tank 1, and the air passage plate 11 has an air suction port 14 at a position facing the propeller fan 13 at the top thereof.
However, there is an air outlet 15 between the floor 8 and the lower part of the wind passage plate 11.
Are formed respectively.

The heat transfer tube 12 is commonly used for heating and cooling by alternately flowing steam and cooling water. As is clear from FIG. 3, the heat transfer tube 12 has a left side surface and a right side surface of the tank 1. Upper tube group 12a disposed symmetrically with respect to each other, and located on each side above the center of the tank 1.
And a lower tube group 12b positioned below that. These upper and lower tube groups 12a, 12b
Are supported in communication with each other by a semi-annular header 17 on one end side in the axial direction of the tank 1, and on the other end side of the tank 1, the upper tube group 1 located on both left and right side surfaces.
2a and 12a are supported by the upper header 18 so as to communicate with each other, and lower tube groups 12b and 12b
They are supported by the lower header 19 in a mutually communicating state, and further, the intermediate position of each heat transfer tube 12 is supported by the annular support member 20, thereby forming a cage-shaped heat transfer tube assembly as a whole. There is.

The upper header 18 connecting the left and right upper tube groups 12a, 12a is provided with a first port 21 which also serves as an inlet for steam and an outlet for cooling water, and connects the lower tube groups 12b, 12b together. The lower header 19 has a second port 2 that serves as both an outlet for steam and an inlet for cooling water.
2 are provided, and the upper tube group 12a and the lower tube group 12b are arranged in an inclined state so that the end portion on the first port 21 side is higher than the end portion on the second port 22 side. That is, the upper tube group 12a is inclined so that the end on the upper header 18 side is higher than the end on the header 17 side, and the lower tube group 12b has the end on the lower header 19 side on the header 17 side. It is inclined to be lower than the part. Inclining the heat transfer tube 12 in this manner is extremely effective in preventing steam and water from being mixed.

The temperature control mechanism 2 includes a steam source 25 and a cooling water source 26. The steam source 25 is connected to the first port 21 via a steam control valve 27 whose opening can be adjusted, and the cooling water source is also connected. 26 is connected to the second port 22 via a cooling water control valve 28 whose opening can be adjusted, and further, the first port 2
1, a cooling water outlet 30 is connected via a cooling water outlet opening / closing valve 29 that is turned on / off, and two steam outlet opening / closing valves 31 of different capacities arranged in parallel are also connected to the second port 22. Vapor outlet 3 through the 32 and the trap 32a
3 is connected.

On the other hand, the pressure adjusting mechanism 3 includes a compressed air source 35 for increasing the pressure of the tank 1, and the compressed air source 35 is connected to the tank 1 via an inflow side air adjusting valve 36 whose opening can be adjusted. On the secondary side of the tank 1, an outflow side air control valve 37 for adjusting the opening degree for discharging the air in the tank 1 and an outflow side air opening / closing valve 38 for on / off operation are connected in parallel. Has been done. In addition, 39 is a silencer.

Further, the control means 4 controls the program setting device 45 for setting a predetermined control program, and the control valves 27, 28 and the open / close valves 29, 31, 32 on the basis of the control signal from the program setting device 45. A temperature indicating control alarm meter 46, a pressure indicating control alarm meter 47 for controlling the control valves 36, 37 and the on-off valve 38, and a temperature indicating control alarm meter 46 and a pressure indicating control alarm for detecting the temperature and pressure in the tank. Temperature transmitter 48 and pressure transmitter 4 for transmitting to total 47
It consists of 9.

In using the heating / pressurizing device having the above-mentioned structure, the lid 1a of the tank 1 is opened by the cylinder, and the object to be heated such as laminated glass is carried in by the trolley, and then the lid 1a is opened. Seal tightly. Then, the control unit 4 controls the temperature adjusting mechanism 2 and the pressure adjusting mechanism 3 according to a predetermined program, for example, as shown in FIGS. 4 and 5 and Tables 1 and 2 to heat / pressurize the object to be heated. Processing is performed.

That is, first, the initial blow / temperature raising step A by the temperature adjusting mechanism 2 and the pressure increasing step a by the pressure adjusting mechanism 3.
And are done. In the initial blowing / heating process A, the cooling water control valve 28 and the cooling water outflow opening / closing valve 29 are closed, the two steam outflow opening / closing valves 31, 32 are opened, and in this state, the steam adjustment valve 27 is gradually opened slightly. As a result, steam is supplied into the heat transfer tube 12, and the cooling water staying in the heat transfer tube 12 is discharged from the steam outlet 30. Further, the temperature in the tank 1 gradually rises due to the supply of steam. Thus, by performing the initial blow and discharging the cooling water in the heat transfer tube 12, the water hammer can be prevented.

On the other hand, in the pressurizing step a, with the outflow side air control valve 37 and the outflow side air opening / closing valve 38 closed,
The inflow side air control valve 36 is opened, compressed air is supplied into the tank 1, and the internal pressure of the tank 1 rises.

[0021]

[0022]

Then, in the temperature control mechanism 2, when the steam control valve 27 is opened to a predetermined opening, the large capacity steam outflow opening / closing valve 31 is closed and the small capacity steam outflow opening / closing valve 32 is opened. The temperature holding step B is performed while the above is being supplied. At this time, the temperature inside the tank is measured by the temperature sensor 4
The temperature is constantly detected by 8a, and when it is fluctuated, the temperature is adjusted by controlling the opening degree of the steam control valve 27 by the temperature indicating control alarm meter 46.

On the other hand, in the pressure adjusting mechanism 3, the pressure holding step b is performed by closing all the inflow side air adjusting valve 36, the outflow side air adjusting valve 37 and the outflow side air opening / closing valve 38. At this time, the internal pressure of the tank 1 is the pressure transmitter 49.
When the internal pressure fluctuates, the pressure is adjusted by controlling the opening degree of the inflow side air adjusting valve 36 by the pressure instruction adjusting alarm meter 47.

When the temperature and pressure holding step is performed for a certain period of time, in the temperature control mechanism 2, only the small-capacity vapor outflow on-off valve 32 is opened and the other valves 27 to 31 are all closed. The initial cooling / cooling process C ₁ is performed by discharging the steam in the heat transfer tube 12, and subsequently the steam outflow on-off valves 31 and 32 are closed and the cooling water outflow on-off valve 2 is closed.
9 is opened, the cooling water is supplied to the heat transfer tube 12 by controlling the opening degree of the cooling water control valve 28, and the latter-stage cooling / cooling process C ₂ by the cooling water is performed. Further, in the pressure adjusting mechanism 3, the pressure reducing step c in which the pressure inside the tank 1 is decreased is performed by controlling the opening degree of the outflow side air adjusting valve 37.

When the cooling / cooling steps C ₁ and C ₂ and the step-down step c are thus completed, the heating / pressurizing device waits for the standby steps D and d.
Then, the object to be heated is taken out by opening the lid 1a.

During each of the above steps, the propeller fan 13 on the top of the tank 1 is rotating, and the rotation causes the air in the tank 1 to be sucked into the air passage 10 from the suction port 14 and transmitted along the air passage 10. After the heat is exchanged by forcibly flowing between the heat tubes 12, the heat tubes 12 are blown into the inside of the tank 1 from the air outlet 15 at the lower end of the air passage 10. Therefore, the heat transfer efficiency between the heat transfer tube 12 and the air is high, and the entire tank 1 quickly and uniformly has a uniform temperature distribution.

The temperature adjusting mechanism 2 and the pressure adjusting mechanism 3 can be controlled independently, and are not always controlled at the above timing. In addition, the control program can be changed within the range permitted by the equipment for temperature control and the equipment for pressure control. Therefore, the program in the tank can be changed most efficiently according to the shape of the heated object. The temperature and pressure can be controlled.

[0029]

As described above, according to the present invention, the air passage plate is formed along the inner wall surface of the tank to define the air passage between the inner wall surface and the inner wall surface, and the fan is provided in the air passage. Therefore, the air in the tank is sucked into the air duct by the fan, forcedly circulates along the heat transfer tube, and then ejected into the container, so that heat exchange is caused by the contact between the heat transfer tube and the air in the tank. Can improve the heat transfer efficiency by
As a result, the temperature of the entire tank can be quickly and uniformly distributed.

Further, by controlling the temperature adjusting mechanism and the pressure adjusting mechanism by the control means according to a predetermined program, the internal temperature and pressure of the tank can be controlled to an optimum state according to the shape of the object to be heated and the like. .

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a heating / pressurizing device of the present invention.

FIG. 2 is a sectional view of a tank.

FIG. 3 is a perspective view of a heat transfer tube.

FIG. 4 is a diagram showing an operation pattern of a temperature adjusting mechanism.

FIG. 5 is a diagram showing an operation pattern of a pressure adjusting mechanism.

FIG. 6 is a configuration diagram of a conventional example.

FIG. 7 is a sectional view of a conventional tank.

[Explanation of symbols]

1 tank 2 temperature control mechanism 3
Pressure adjusting mechanism 4 Control means 10 Wind passage 11
Air passage board 12 Heat transfer tube 13 Fan 1
4 Suction port 15 Outlet port 21 1st port 2
2 second port

Claims (3)

[Scope of utility model registration request] 1. A wind passage plate is provided which has a tank for accommodating an object to be heated and heating the same under pressure, and which forms an air passage along the inner wall surface of the tank with the inner wall surface. A heat transfer tube for flowing a heating medium or a cooling medium is provided in the air passage, and the air in the tank is sucked into the air passage and circulated along the heat transfer tube and then jetted into the tank. A heating / pressurizing device, characterized in that a fan is provided, and the air passage plate is provided with an inlet and an outlet for the air. 2. A heat transfer tube is commonly used as a medium for flowing a heating medium and a cooling medium, and a first port serving as an inlet of the heating medium and an outlet of the cooling medium is provided at one end thereof, and the heating medium is provided at the other end thereof. The heating / heating device according to claim 1, further comprising a second port that also serves as an outlet and an inlet for the cooling medium, and is arranged in an inclined state so that the first port side is gradually higher than the second port side. Pressure device. 3. A temperature adjusting mechanism for adjusting the internal temperature of the tank by supplying a heating medium or a cooling medium to the heat transfer tube, a pressure adjusting mechanism for adjusting the internal pressure of the tank by supplying and discharging compressed air, and these. The heating / pressurizing device according to claim 1 or 2, further comprising: a control unit that controls the temperature adjusting mechanism and the pressure adjusting mechanism according to a predetermined program.