JP6721243B2 - Dryer - Google Patents

Description

The present invention relates to a dryer for drying linen products such as sheets, pillowcases, towels, etc., and washed laundry such as mops, mats, etc., and particularly to drying of high-temperature dry air while rotating the inner body into which the laundry has been put. The present invention relates to a rotary drum type dryer which is sprayed on and dried.

Patent Document 1 proposes a dryer and a drying method for drying linen products such as sheets, pillow covers, and towels, and washed laundry such as mops and mats. The dryer described in Patent Document 1 includes an outer body portion provided in a dryer housing, and an inner body (rotary drum) rotatably supported in the outer body portion and into which laundry is put. ing. In addition, a rotation drive mechanism that drives the inner body to rotate inside the outer body, and a dry air supply/exhaust system that supplies the dry air heated by taking in the outside air into the outer body and discharges the dry air inside the outer body to the outside. And a section.

Then, the laundry is put into the inner body, the dry air is supplied into the outer body while rotating the inner body in the outer body, and a mesh-shaped hole or a plurality of punches provided on the outer periphery of the inner body. Dry air is introduced into the interior through the holes and sprayed on the laundry to dry the laundry by removing moisture from the laundry. The dry air blown to the laundry in the rotating inner body is generated by heating the outside air by heat exchange between the taken-in outside air and the heater. The generated dry air is blown to the laundry in the inner body and then discharged to the outside by the discharge part, or a part of the outside air is heated by the heater and sent again to the inner body to wash the laundry. To be sprayed on.

JP, 2007-61410, A

However, if there is a gap between the axial ends of the inner body and the outer body, the dry air supplied into the outer body passes between the inner wall of the outer body and the side wall of the inner body. , It is discharged from the outer body without being sprayed onto the laundry in the inner body. Therefore, the drying air that does not contribute to the drying of the laundry is wastefully discharged, resulting in poor drying efficiency.

Also, if there is a gap between the axial ends of the inner body and the outer body, laundry may enter the lint, or lint, etc., may increase the rotational resistance of the inner body.

Therefore, the present invention provides a dryer that prevents the discharge of dry air from the axial end portions of the inner body and the outer body portion, prevents the material to be dried, lint, etc. from being caught, and improves the drying efficiency. With the goal.

One aspect of the present invention for solving the above-mentioned problems is a tubular outer barrel portion provided in a dryer casing, and a barrel into which an object to be dried is rotatably supported and is placed inside the outer barrel portion. Jo of the inner body, the outer dry air of the outer barrel and supplies a rotational drive mechanism for rotationally driving the the fuselage in the outer barrel, the drying air heated takes in outside air into the outer barrel a dryer and a drying air supply and discharge unit for discharging the, the axial end of the inner body, the outer the inner sealing mechanism is provided between the axial end of the barrel The axial end of the body has an inner body charging port into which the material to be dried is charged, and the outer body has an end wall in which an opening into which the material to be dried is charged is formed. The sealing mechanism includes an outer peripheral surface of an annular peripheral end wall provided in the entire area in the circumferential direction of the inner body from the opening edge portion of the inner body insertion port of the inner body toward the inner side, and an end wall of the outer body portion. An inner peripheral surface and a seal member sandwiched between the outer peripheral surface and the inner peripheral surface, and the inner peripheral surface of the end wall of the outer body portion has an outer body portion that is inside the seal member. Is provided with a peripheral wall extending toward the inside .

Further, in one aspect of the present invention, an annular member is attached to an axial end portion of the inner body in the entire circumferential direction, and an opening edge portion of the annular member on the end wall side and the end wall are provided. The sealing mechanism is formed by the peripheral wall projecting toward the inner side of the outer trunk portion and provided in the entire area in the circumferential direction, and the seal member sandwiched between the opening edge portion and the peripheral wall. Is characterized by.

Further, in one aspect of the present invention, the outer peripheral surface of the opening end of the peripheral end wall, the inner peripheral surface of the end wall, and the seal member sandwiched between the outer peripheral surface and the inner peripheral surface, It is characterized in that a sealing mechanism is formed .
Further, in one aspect of the present invention, an outer annular member is attached to an axial end portion of the inner body over the entire area in the circumferential direction, and the outer annular member is provided on the inner body insertion port side of the inner body, The end wall of the inner body charging port is formed by stacking two disc-shaped plate materials to form the peripheral end wall. An inner annular member is attached to an opening edge of the peripheral end wall, and an outer annular member and an end wall of the outer body part are formed. A space is sealed by the sealing mechanism, and the sealing mechanism is sandwiched between the outer peripheral surface of the inner annular member, the inner peripheral surface of the end wall, and the outer peripheral surface and the inner peripheral surface. It is characterized by being formed by and.

According to the present invention, since the seal mechanism is provided between the axial end portion of the inner body and the axial end portion of the outer body portion, the dry wind from the axial end portions of the inner body and the outer body portion Since the discharge can be prevented and the discharge of the dry air that does not contribute to the drying of the material to be dried can be reduced, the drying efficiency can be improved. Further, since the sealing mechanism is provided at the axial end portions of the inner body and the outer body portion, it is possible to prevent the material to be dried, the lint, etc. from being caught in the axial end portions of the inner body and the outer body portion. ..

It is a perspective view which shows the dryer which concerns on embodiment of this invention. It is a front view which shows the dryer which concerns on embodiment of this invention. It is a side view which shows the dryer which concerns on embodiment of this invention. FIG. 4 is a schematic cross-sectional view showing the dryer according to the embodiment of the present invention and taken along line IV-IV in FIG. 3. FIG. 5 is a schematic cross-sectional view showing the dryer according to the embodiment of the present invention, which is taken along line V-V in FIG. 2. FIG. 6 is a schematic cross-sectional view showing the dryer according to the embodiment of the present invention and taken along line VI-VI in FIG. 2. It is a schematic sectional drawing which shows the dryer which concerns on embodiment of this invention, and shows a part cut|disconnected along the VII-VII line of FIG. It is a schematic sectional drawing which shows the dryer which concerns on embodiment of this invention and which shows the other example of the seal structure shown in FIG. It is a schematic sectional drawing which shows the dryer which concerns on embodiment of this invention and which shows the other example of the seal structure shown in FIG. It is a side view which shows the dryer which concerns on embodiment of this invention, and shows a dry air supply/exhaust part. It is a perspective view which shows the structure which automatically cleans the heater of the dryer which concerns on embodiment of this invention. It is a top view which shows the drying air supply/exhaust part of the dryer which concerns on embodiment of this invention. It is a front view which shows the drying air supply/exhaust part of the dryer which concerns on embodiment of this invention. The discharge part in the dryer which concerns on embodiment of this invention is shown, (a) is a front view, (b) is a side view, (c) is a rear view. It is a block diagram which shows the control part in embodiment of the dryer which concerns on this invention, the detection means which inputs a detection result into this control part, and the apparatus controlled by the control part. It is a flow chart which shows operation of a flow regulating valve of a drier concerning an embodiment of the invention.

Hereinafter, embodiments of the dryer according to the present invention will be described in detail. The dryer according to the present invention is a so-called commercial dryer for drying linen products such as sheets, pillowcases, towels, and washed laundry such as mops and mats.
[Overall Structure of Dryer and Features of Embodiment]

As shown in FIG. 1 to FIG. 3, a dryer 1 according to the present embodiment is provided with a box-shaped dryer housing 2 and a drying air provided adjacent to one side of the dryer housing 2. It is composed of the housing 51 of the supply/discharge unit 6. As shown in FIG. 4, the dryer 1 includes an outer body portion 3 provided in a dryer housing 2 and an inner body portion 3 rotatably supported inside the outer body portion 3 into which a material to be dried 10 is loaded. The body 4, a rotary drive mechanism 5 for rotationally driving the inner body 4 in the outer body 3, a dry wind that is provided in the housing 51 and takes in outside air and is heated, and supplies the outer body 3 with the dried air. A dry air supply/exhaust portion 6 for discharging the dry air in the body portion 3 to the outside.

As shown in FIG. 4 and FIG. 5, in the dryer 1 of the present embodiment, the dry air supply/exhaust unit 6 takes in outside air and heats it to form dry air and supplies it to the inside of the inner body 4. An exhaust unit 53 that exhausts the exhausted dry air after drying the dried object 10 in the inner body 4 is integrally formed in the housing 51.

As shown in FIG. 5, in the dryer 1 of the present embodiment, the exhausted dry air discharged from the inside of the inner body 4 is heated by the heater 56 together with the outside air taken in from the outside air intake 54, and is supplied into the inside of the inside body 4 again. The exhaust heat circulation part 94 is formed between the supply part 52 and the discharge part 53 in the housing 51.

In addition, as shown in FIGS. 1, 3, 4, and 5, in the dryer 1 according to the present embodiment, the outside air intake 54 provided in the housing 51 by the supply unit 52 and the outside air intake 54 are provided. An intake damper 55 that adjusts the amount of air taken in and a heater 56 that heats the outside air taken in from the outside air intake 54 are formed. In the exhaust duct 67, the exhaust unit 53 exhausts the dry air in the inner body 4, the exhaust blower 68 that sucks the dry air in the inner body 4 and exhausts it in the exhaust duct 67, It is formed with an exhaust damper 69 (see FIG. 14) that adjusts the amount of discharged dry air to the outside.

In addition, the dryer 1 of the present embodiment has a control unit 12 that controls the drying operation by the dryer 1, and the control unit 12 controls the inside of the inner body 4 during the initial drying operation when the drying operation is started. The intake damper 55 is set to the fully open state in which the opening area of the outside air intake 54 is maximum until the humidity of the exhausted dry air discharged from the inside of the inner body 4 after being blown to the object to be dried 10 falls below the first set value. The exhaust damper 69 is fully opened so that the opening area of the exhaust duct 67 is maximized.

In the dryer 1 of the present embodiment, the seal mechanisms 35, 36 or the seal mechanisms 39, 40 are provided between the axial end of the inner body 4 and the axial end of the outer body 3. ing.
Hereinafter, details of the dryer 1 according to the embodiment will be described with reference to the drawings.
[Dryer case]

As shown in FIGS. 1 and 5, the dryer housing 2 is provided with a charging port 14 for charging the material to be dried 10 inside, on the front surface 13 side, and as shown in FIGS. A discharge port 15 for discharging the dried object is provided on the side. The loading port 14 is provided with a loading side opening/closing lid 16 that opens and closes the loading port 14 by moving up and down. The opening-side opening/closing lid 16 is provided with internal viewing windows 17 and 17 through which the inside of the dryer housing 2 can be viewed. Further, as shown in FIG. 6, the discharge port 15 is provided with a discharge side opening/closing lid 18 whose upper part is rotatably supported by the dryer housing 2 and which is rotated to open/close the discharge port 15. .. Further, the outer body portion 3 is integrally provided in the dryer housing 2 between the inlet 14 and the outlet 15.

As shown in FIGS. 4, 5, and 6, the outer body portion 3 has a tubular shape, and one end wall 19 in the axial direction is open toward the inlet 14 of the dryer housing 2, and The other end wall 20 opens toward the discharge port 15 of the dryer housing 2. Further, the side wall 21 along the circumferential direction of the outer body portion 3 is provided with a dry air outlet 22 on the lower side, and a dry air inlet 23 is provided on the housing 51 side in the dryer housing 2. .. The dry air exhaust port 22 is connected to one side of an exhaust duct 24 arranged at a lower portion of the outer body 3. The other side of the exhaust duct 24 is connected to a dry air supply/exhaust section 6 described later. Further, one side of the dry air supply duct 25 is connected to the dry air inlet 23. The other side of the dry air supply duct 25 is connected to a dry air supply/exhaust section 6 described later.

Further, one side of the dry air supply duct 25 is connected to the dry air inlet 23. The other side of the dry air supply duct 25 is connected to a dry air supply/exhaust section 6 described later. In addition, the dry air supply duct 25 is provided with a cooling port 11 that opens upward. The cooling port 11 is closed when the dryer 1 is operating, and is opened after the drying operation by the dryer 1 is completed. By opening the cooling port 11, the material to be dried is cooled (cool down).

Then, the dry air generated in the dry air supply/exhaust unit 6 is supplied into the outer trunk portion 3 through the dry air supply duct 25 and the dry air intake port 23, and from the outer trunk portion 3, the dry air exhaust port is supplied. The dry air after drying the material to be dried 10 through the exhaust duct 22 and the exhaust duct 24 is discharged to the dry air supply/exhaust unit 6 and exhausted or circulated. The dry air supplied into the outer body portion 3 is sent into the inner body 4 rotating in the outer body portion 3 and is blown onto the article to be dried 10 put in the inner body 4.

[Inner body 4]
As shown in FIG. 4, FIG. 5, and FIG. 6, the inner body 4 has a cylindrical shape, and one end face 26 in the axial direction has an inner body input port 27 that opens toward the input port 14 of the dryer housing 2. The other end surface 28 in the axial direction is formed with an inner barrel discharge port 29 that opens toward the discharge port 15 of the dryer housing 2. Further, a plurality of dry air passage holes 31 are provided over the entire surface of the side wall 30 along the circumferential direction of the inner body 4. The dry air supplied to the outer body portion 3 passes through the dry air passage holes 31, and the dry air is introduced into the inner body 4.

Further, inside the side wall 30 of the inner body 4, six projections 32 are provided at equal intervals in the circumferential direction. These protrusions 32 are long in the axial direction of the inner body 4, protrude from the inner surface of the side wall 30 toward the center of the inner body 4, and have their tips formed in an acute angle shape toward the center. When the inner body 4 rotates in the outer body portion 3, these protrusions 32 scrape the material to be dried 10 from the lower side of the inner body 4 to the upper side of the inner body 4 as shown in FIG. The article to be dried 10 is dropped from the lower side. At this time, the dry air that has passed through the dry air passage holes 31 is blown onto the article to be dried 10.

[Seal mechanism]
Further, as shown in FIG. 7, annular members 33, 34 are attached to both ends of the inner body 4 in the axial direction over the entire area in the circumferential direction. The annular member 33 is provided on the inner-body insertion port 27 side of the inner body 4, and the annular member 34 is provided on the inner-body discharge port 29 side. A seal mechanism 35 seals between the annular member 33 and the end wall 19 of the outer body portion 3, and a seal mechanism 36 seals between the annular member 34 and the end wall 20.

The seal mechanism 35 includes an opening edge portion 33a on the end wall 19 side of the annular member 33, a peripheral wall 19a that protrudes from the end wall 19 toward the inner side of the outer trunk portion 3 and is provided in the entire circumferential direction, and the opening edge portion. 33a and a seal member 35a provided between the peripheral wall 19a. The seal mechanism 36 includes an outer peripheral surface 34a of the annular member 34, an inner peripheral surface 20a of the end wall 20, and a seal member 36a provided between the outer peripheral surface 34a and the inner peripheral surface 20a.

By these sealing mechanisms 35 and 36, the dry air introduced into the inner body 4 is discharged from the axial ends of the inner body 4 and the outer body 3 without being blown to the article to be dried 10. Can be prevented.

Further, the seal mechanism at the axial ends of the inner body 4 and the outer body 3 may have the structure shown in FIG. In the structure shown in FIG. 8, annular members 37 and 38 are attached to both ends in the axial direction of the inner body 4 over the entire area in the circumferential direction. The annular member 37 is provided on the inner case loading port 27 side of the inner body 4, and the annular member 38 is provided on the inner case discharge port 29 side. A seal mechanism 39 seals between the annular member 37 and the end wall 19 of the outer body portion 3, and a seal mechanism 40 seals between the annular member 38 and the end wall 20.

The seal mechanism 39 is formed of an outer peripheral surface 41b of the open end 41a of the peripheral end wall 41, an inner peripheral surface 19b of the end wall 19, and a seal member 39a sandwiched between the outer peripheral surface 41b and the inner peripheral surface 19b. There is. The peripheral end wall 41 has a disc shape and is fixed to the annular member 37 so as to face the end wall 19 and configure an end wall of the inner case loading port 27 of the inner body 4. Further, the seal member 39 a is arranged on the axial center side of the inner body 4, that is, at a position close to the inner body insertion port 27.

Further, at a corner formed by the peripheral end wall 41 and the side wall 30 of the inner body 4, a corner embedding member 44 inclined from the sealing material 39a side of the peripheral end wall 41 toward the inner wall of the inner body 4 is provided. Further, from the inner peripheral surface 19b of the end wall 19, a peripheral wall 42 extending toward the inner case discharge port 29 side is provided inside the seal member 39a, and the peripheral wall 42 is the inner case inlet port 27 of the seal member 39a. It is provided so as to cover the side.

The sealing mechanism 40 includes an annular member 38, a peripheral end wall 43 that is fixed to the annular member 38 and faces the end wall 20, and serves as an end wall of the inner shell discharge port 29 of the inner body 4, and an inner peripheral surface 20 a of the end wall 20. , The annular member 38, the peripheral end wall 43, and the inner peripheral surface 20a, and a seal member 40a disposed inside.

Further, due to the sealing mechanisms 39 and 40, no gap is formed between the inner body 4 and the outer body 3 on the input side and the discharge side of the material to be dried 10. As a result, the dry air introduced into the inner body 4 does not flow out between the outer body 3 and the inner body 4, and the dry air introduced into the inner body 4 is entirely blown to the object to be dried. become. Furthermore, since there is no gap between the inner body 4 and the outer body 3 on the input side and the discharge side of the material to be dried, the material 10 to be dried in the inner body 4 does not get caught in the gap.

In addition, since the seal member 39a is located between the opening end 41a of the peripheral end wall 41 and the peripheral wall 19a of the end wall 19, the object to be dried 10 in the inner body 4 and the seal member 39a do not come into contact with each other, The seal member 39a is not damaged. Furthermore, the seal member 39a is provided on the axial center side of the inner body 4, and the corner embedding member 44 is provided, so that the material to be dried 10 is provided at the corner where the annular member 37 of the inner body 4 and the peripheral end wall 41 are continuous. It does not stay.

The axial sealing mechanism for the inner body 4 and the outer body 3 may have the structure shown in FIG. In the structure shown in FIG. 9, outer annular members 107 and 111 are attached to both ends of the inner body 4 in the axial direction over the entire area in the circumferential direction. The outer annular member 107 is provided on the inner case loading port 27 side of the inner body 4, and the outer annular member 111 is provided on the inner case discharging port 29 side. A seal mechanism 105 seals between the outer annular member 107 and the end wall 19 of the outer body portion 3, and a seal mechanism 106 seals between the outer annular member 111 and the end wall 20.

The seal mechanism 105 includes an outer peripheral surface 109a of the inner annular member 109, an inner peripheral surface 19b of the end wall 19, and a seal member 105a sandwiched between the outer peripheral surface 109a and the inner peripheral surface 19b. The peripheral end wall 108 is formed by stacking two disc-shaped plate materials, and constitutes an end wall of the inner case loading port 27. An inner annular member 109 is fixed inside the peripheral end wall 108 (on the axial center side of the inner body 4) so as to face the end wall 19. A concave groove 109b is formed on a surface of the inner annular member 109 facing the inner peripheral surface 19b, and the seal member 105a is inserted into the concave groove 109b. Further, the seal member 105a is arranged on the axial center side of the inner body 4, that is, at a position close to the inner body insertion port 27. A peripheral wall 110 extending from the inner peripheral surface 19b of the end wall 19 toward the inner shell discharge port 29 side is provided inside the seal member 39a. The peripheral wall 110 is provided so as to cover the seal member 105a and the inner annular member 109.

The seal mechanism 106 includes an outer peripheral surface 112a of the inner annular member 112 fixed to the outer annular member 111, an inner peripheral surface 20a of the end wall 20, and a seal member sandwiched between the outer peripheral surface 112a and the inner peripheral surface 20a. And 106a. The inner wall discharge port 29 side of the end wall 20 extends toward the inner wall insertion port 27 side to form a peripheral wall portion 20b. The peripheral wall portion 20b is provided so as to cover the seal member 106a and the inner annular member 112. The sealing mechanism 105 and the sealing mechanism 106 have the same functions and effects as the sealing mechanisms 39 and 40 shown in FIG. When the inner body 4 rotates in one direction with respect to the outer body 3 by the rotation drive mechanism 5, the sealing material 105a always slides on the inner peripheral surface 19b of the end wall 19. When the inner body 4 rotates in one direction with respect to the outer body 3 by the rotation driving mechanism 5, the sealing material 39a always slides on the inner surface of the peripheral end wall 41 and the inner surface of the end wall 19.

[Rotation drive mechanism]
As shown in FIGS. 4 and 5, the rotary drive mechanism 5 includes four drive rollers 50, 50, 50, 50 that rotatably support the inner body 4 in the outer body portion 3, and rotate the drive rollers. A motor 48 for driving, two rotating shafts 47, 47 for transmitting driving force to the driving rollers 50, 50, 50, 50, and a transmission belt 45 for transmitting rotational driving force of the motor 48 to the rotating shafts 47, 47. Is formed of. Two drive rollers 50, 50, 50, 50 are arranged on both sides of the lower portion of the inner body 4, and support the inner body 4 at the four corners on the lower side. The two drive rollers 50, 50 on the dry air supply/discharge section 6 side and the two drive rollers 50, 50 on the opposite side to the dry air supply/discharge section 6 are connected to a rotary shaft 47, respectively. The rotating shafts 47, 47 are connected to the transmission belts 45, 45.

As a result, the rotational driving force of the motor 48 is transmitted to the rotary shafts 47, 47 via the transmission belt 45, and the drive rollers 50, 50, 50, 50 are rotationally driven. The drive rollers 50, 50, 50, 50 are rotatably supported by the dryer casing 2 by bearings (not shown), and the rotation shafts 47, 47 are provided with pulleys (not shown) at one end side thereof. Transmission belts 45 are respectively wound around the pulley and the drive shaft of the motor 48. Further, the drive rollers 50, 50, 50, 50 are arranged outside the outer body portion 3, and a part of the outer periphery thereof penetrates the side wall 21 of the outer body portion 3 and projects into the inner body 4. The inner body 4 is placed on the portion.

Then, by rotating the rotation shafts 47, 47 by the rotational driving force of the motor 48, the drive rollers 50, 50, 50, 50 rotate, and the inner body 4 rotates in the outer body 3. The dry air generated by the dry air supply/exhaust unit 6 is introduced into the inner body 4 rotating in the outer body 3, and the material to be dried put into the inner body 4 is lifted up in the inner body 4. Then, the dry air from the dry air supply/exhaust unit 6 is blown.

[Dry air supply/exhaust section]
As shown in FIGS. 4 to 6, the dry air supply/exhaust unit 6 is integrally incorporated in a box-shaped casing 51 arranged on the side of the dryer casing 2 to take in outside air. A supply unit 52 that heats to form a dry air and supplies the dry air into the outer body 3, and a discharge unit 53 that discharges the dry air after drying the material to be dried in the inner body 4 from the inner body 4. Has been formed. The supply unit 52 is formed of an outside air intake 54, an intake damper 55 that adjusts the amount of air taken in from the outside air intake 54, and a heater 56 that heats the outside air taken in from the outside air intake 54.

As shown in FIGS. 4 to 6 and 10, the outside air intake 54 is formed in a rectangular shape on the upper side of the housing 51 and the side wall 57 of the front surface 13. An intake damper 55 is provided at the outside air intake 54. The intake damper 55 is composed of four rotary lids 58 (58a, 58b, 58c, 58d) and a drive mechanism 59 for rotating these rotary lids 58. The four rotary lids 58a, 58b, 58c, 58d are rectangular and are arranged at equal intervals between the upper and lower frames 60, 61 of the outside air intake 54. Further, the rotary lids 58a, 58b, 58c, 58d are rotatably supported by upper and lower frames 60, 61 at both ends in the longitudinal direction via supporting shafts 62 (see FIGS. 12 and 13). In a state where the four rotary lids 58a, 58b, 58c, 58d are rotated by approximately 90 degrees, the outside air intake 54 is fully opened by the four rotary lids 58a, 58b, 58c, 58d and is not rotated. Then, the four rotary lids 58a, 58b, 58c, and 58d cover the outside air intake port 54, and the outside air intake port 54 is fully closed.

Therefore, in a state where it is positioned in a direction intersecting with the outside air intake port 54, that is, in a rotated state, the outside air is introduced into the housing 51 from between the four rotation lids 58a, 58b, 58c, 58d. Every time the four rotary lids 58a, 58b, 58c, 58d are rotated, the space between the four rotary lids 58a, 58b, 58c, 58d becomes wider, and the flow rate of the outside air introduced into the housing 51 increases. .. The rotation angle of the rotation lids 58a, 58b, 58c, 58d is controlled by the drive mechanism 59.

As shown in FIGS. 12 and 13, the drive mechanism 59 is composed of a parallel link mechanism 63 arranged above the outside air intake 54 and an air cylinder 64 that drives the parallel link mechanism 63. The parallel link mechanism 63 includes levers 65, 65, 65, 65 having one ends fixed to support shafts 62, 62, 62, 62 rotatably supported by an upper frame 60, and these levers 65, 65. , 65, 65 are formed at the other end thereof with a drive link 66 rotatably connected. The drive link 66 is connected to the drive shaft 64a of the air cylinder 64.

When the drive shaft 64a of the air cylinder 64 is inside the cylinder, as shown in FIG. 12, the rotary lids 58a, 58b, 58c, 58d are in a state of intersecting the outside air intake 54, As the intake port 54 is fully opened and the drive shaft 64a projects from the inside of the cylinder, the drive link 66 slides to rotate each lever 65. As the levers 65 rotate, the rotary lids 58a, 58b, 58c, 58d gradually rotate, and the gap between the outside air intake ports 54 becomes smaller. When the drive shaft 64a is maximally projected from the inside of the cylinder, the rotary lids 58a, 58b, 58c, 58d are parallel to the heater 56, and the outside air intake 54 is fully closed. As a result, the amount of outside air taken in from the outside air intake port 54 can be controlled. The outside air taken in from the outside air intake port 54 is heated by passing through the heater 56.

The heater 56 is formed by arranging erotic fin tubes in multiple stages. The erotic fin tube is a tube in which fins are spirally wound around an outer circumference of a pipe, and high-temperature steam is caused to flow in the pipe to heat air passing between the spiral fins. The erotic fin tube is connected to a steam generator (not shown) and a steam supply pipe 98 (see FIG. 10). A flow rate adjusting valve 97 is provided in the middle of the steam supply pipe 98. The flow rate adjusting valve 97 is opened and closed by the control unit 12 to adjust the flow rate of steam flowing in the erotic fin tube.

Therefore, the outside air introduced from the outside air intake port 54 is heated by passing between the spiral fins of the erotic fin tubes arranged in multiple stages to generate dry air. For this reason, dust or the like contained in the outside air adheres to the spiral fin of the erotic fin tube, so that the automatic cleaning mechanism 100 for cleaning the heater 56 is provided.
[Automatic cleaning mechanism]

As shown in FIG. 11, the automatic cleaning mechanism 100 includes an injection nozzle 101 that injects a cleaning liquid to the heater 56, a cleaning liquid supply unit 102 that supplies the cleaning liquid to the injection nozzle 101, and a heater 56 that injects the heater 56 into the cleaning liquid. It is composed of a recovery unit 103 for recovering the cleaning liquid after cleaning, and a flow rate control valve 104 for controlling the flow rate of the cleaning liquid to the cleaning liquid supply unit 102. The injection nozzles 101 are arranged above the heater 56, and four casings 51 are provided in the casing 51 at equal intervals in the longitudinal direction of the heater 56. These injection nozzles 101 are attached to the tips of four supply pipes 102 a extending toward the upper part of the heater 56 from the cleaning liquid supply unit 102 so as to inject the cleaning liquid toward the heater 56. Further, the recovery unit 103 is provided on the lower side of the heater 56, and recovers the cleaning liquid sprayed on the upper side of the heater 56 and flowing to the lower side.

When tap water is used as the cleaning liquid, the jet pressure from the jet nozzle 101 can be adjusted by adjusting the flow rate of tap water with the flow rate adjusting valve 104 as described above. When another fluid is used as the cleaning liquid, a pressure pump for pumping the cleaning liquid to the cleaning liquid supply unit 102 may be used to apply pressure to the cleaning liquid and adjust the injection pressure from the injection nozzle 101.

Then, the cleaning liquid (tap water) whose flow rate is adjusted by the flow rate adjusting valve 104 is sprayed from the four injection nozzles 101, 101, 101, 101 onto the heater 56, that is, the spiral fin of the erotic fin heater. The dust and the like adhering to the fins and pipes are washed down and flow down, and are collected by the collection unit 103. Therefore, after the operation of the dryer 1 is stopped, the cleaning liquid can be directly sprayed from the spray nozzle 101 to the heater 56 for automatic cleaning.

This eliminates the need for removing the heater 56 from the housing 51, cleaning the heater 56, and reassembling the heater 56 in the housing 51. Further, when the heater 56 is cleaned, the angle of the spray nozzle 101 is changed and the cleaning liquid is sprayed onto the filter on the outside air intake side of the heater 56, so that the filter can be cleaned together with the heater 56. In addition, when the dry air discharged from the inner body 4 is circulated and used, even if dust such as lint from the material to be dried mixed in the dry air is attached to the heater 56, It can be easily cleaned and removed by the cleaning mechanism 100, and the supply unit 52 can generate clean dry air that does not contain dust and the like.

The generated dry air is supplied from the dry air inlet 23 of the outer body 3 into the outer body 3 through the dry air supply duct 25, introduced into the inner body 4, and then the dry air discharge port. It is discharged from 22 to the discharge part 53.

As shown in FIGS. 4 to 6 and 14, the discharge part 53 has a discharge part duct 67 which is connected to the exhaust duct 24 in the dryer casing 2 on one side and has an exhaust port 74 on the other side. An exhaust blower 68, which is provided in the middle of the exhaust duct 67, sucks dry air in the outer trunk 3 from the outer trunk 3 through the exhaust duct 24 and discharges it into the exhaust duct 67, and the exhaust duct 67. Formed with the exhaust damper 69 that is provided in the inside of the inner body 4 to discharge all the dry air (exhaust dry air) after being blown to the object to be dried 10 or to circulate a part of the exhaust dry air. Has been done.

As shown in FIG. 14, the exhaust duct 67 includes a connecting duct 70 that communicates with the exhaust duct 24, a blower casing 71 that houses the exhaust blower 68, and an exhaust/circulation duct 72 that extends upward from the blower casing 71. It is formed by and. The connecting duct 70 is in communication with the exhaust duct 24 on the lower side of the dryer casing 2 on the lower side of the casing 51. The blower casing 71 is provided on the lower side of the housing 51, and the blower fan 73 of the exhaust blower 68 is built therein.

An exhaust/circulation duct 72 extending upward from the blower casing 71 is provided adjacent to the supply unit 52 as shown in FIG. As shown in FIGS. 12, 14 (a ), (b ), and (c ), an exhaust port 74 is formed on the upper end side of the exhaust/circulation duct 72, and side walls 75 and 76 adjacent to the supply unit 52 are provided. The circulation ports 78 are provided at four locations along the vertical direction. These circulation ports 78 communicate with a circulation duct 79. The circulation duct 79 communicates with the outside air intake port 54, and among the four rotation lids 58 of the intake damper 55, a rotation lid 58a adjacent to the circulation duct 79 opens and closes the outside air intake port 54 side and the circulation port 78. It The open lid 54a closes the exhaust/circulation duct 72 when the outside air intake port 54 is fully opened (that is, the pivot lid 58 is located at a position where the opening area is maximized).

As shown in FIGS. 14A, 14B, and 14C, the exhaust damper 69 includes two opening/closing lids 80 and 81 rotatably supported by the side wall 77 and a rotation shaft of the opening/closing lid 80. A rotary drive lever 82 fixed to one end of the rotary cover 80a, an air cylinder 83 that rotates the rotary drive lever 82 about the rotary shaft 80a, and a rotary drive lever 82 fixed to the other end of the rotary shaft 80a of the opening/closing lid 80. Upper rotation lever 84, a lower rotation lever 85 fixed to the rotation shaft 81a of the opening/closing lid 81 on the same side as the other end of the rotation shaft 80a of the opening/closing lid 80, the upper rotation lever 84 and the lower rotation lever 84. It is formed of a connecting lever 86 that connects the moving lever 85.

When the drive shaft 83a of the air cylinder 83 projects into and out of the cylinder, the opening/closing lids 80, 81 rotate in the discharge duct 67 about the rotation shafts 80a, 81a to open and close the discharge duct 67. When the drive shaft 83a of the air cylinder 83 is projected, the opening/closing lids 80 and 81 are located on the side wall 77 side, and the exhaust duct 67 is fully opened. At this time, the rotary damper 58a of the intake damper 55 of the outside air intake 54 closes the circulation duct 79. When the drive shaft 83a is retracted into the cylinder, the opening/closing lids 80, 81 are separated from the side wall 77 to close the discharge duct 67 and become fully closed. At this time, the rotary damper 58a of the intake damper 55 of the outside air intake 54 opens the circulation duct 79. The dry air exhausted from the inside of the inner body 4 is blown into the exhaust duct 67 by the exhaust blower 68.

The exhaust blower 68 is formed of a blower fan 73 arranged in the blower duct 71 and a blower motor 87 that rotationally drives the blower fan 73. The blower motor 87 is provided so as to project outward from the blower duct 71, and rotationally drives the blower fan 73 in the blower duct 71. By rotating the blower fan 73, the blower fan 73 sucks the dry air blown onto the material to be dried from the inside of the outer body 3 through the exhaust duct 24 and the dry air outlet 22 of the outer body 3. Then, the dry air after being blown to the article to be dried 10 is blown into the exhaust duct 67. Further, by sucking the dry air after being blown onto the object to be dried 10 from inside the outer trunk portion 3 through the inside of the outer trunk portion 3, the outside air is sucked through the dry air inlet 23 and the dry air supply duct 25 from the outside air inlet 54 to the outside air. Is sucked.
[Exhaust heat circulation unit]

As shown in FIGS. 12 and 13, the exhaust heat circulation unit 94 includes circulation ports 78, 78, 78, 78 provided in the discharge unit duct 67, a circulation duct 79, a rotating lid 58 a, an opening/closing lid 80, It is composed of 81. The dry air blown by the exhaust blower 68 onto the material to be dried blown into the exhaust duct 67 is partly controlled by controlling the rotation angles of the exhaust damper 69 and the intake damper 55, that is, the opening and closing angles. Is sent into the circulation duct 79 through the circulation port 78, is heated again by the heater 56 from the outside air intake 54, and is circulated. In the circulation of the dry air, the control unit 12 sets the opening and closing angles of the exhaust damper 69 and the intake damper 55 according to the state at the time of the dry driving, so that the dry operation is performed under the preferable dry condition and with the high thermal efficiency. be able to.
[Control unit 12]

Further, the flow rate adjusting valve 97, the intake damper 55, the exhaust damper 69, the motor 48, and the blower motor 87 that adjust the flow rate of the high temperature steam supplied to the heater 56 are connected to the control unit 12 and set by the control unit 12. It is controlled according to the drying conditions and the drying procedure.

As shown in FIG. 15, the control unit 12 includes an input unit 88, an output unit 89, a first storage unit 90, a second storage unit 91, and a drying condition setting unit 92. A flow rate adjusting valve, an intake damper 55, an exhaust damper 69, a motor 48, and an exhaust blower 68 are connected to the output section 89, and an intake temperature sensor 93, an exhaust temperature sensor 95, and an exhaust humidity sensor 96 are connected to the input section 88. And are connected. As shown in FIG. 1, the intake air temperature sensor 93 is disposed inside the dryer casing 2 and above the axially intermediate portion of the outer body portion 3. The exhaust temperature sensor 95 is arranged outside the exhaust/circulation duct 72 as shown in FIG. The exhaust humidity sensor 96 is arranged outside the exhaust/circulation duct 72 as shown in FIG.

Then, the intake air temperature sensor 93 detects the temperature of the outside air introduced into the supply unit 52 from the outside air intake 54, and inputs the detection result to the control unit 12. The exhaust gas temperature sensor 95 detects the temperature of the exhausted dry air blown to the object to be dried 10 in the inner body 4 and discharged from the dry air outlet 22 of the outer body 3, and inputs the result to the control unit 12. To do. The exhaust humidity sensor 96 is arranged in the vicinity of the exhaust temperature sensor 95, detects the humidity of the discharged dry air, and inputs the result to the control unit 12.

The drying condition setting unit 92 of the control unit 12 controls the intake damper 55, the exhaust damper 69, the exhaust blower 68, the rotary motor 48 of the inner body 4, and at the same time controls the flow rate adjusting valve 97. The procedure will be described with reference to the flowchart of the flow rate adjusting valve 97 shown in FIG.

In step S3 of the flowchart of FIG. 16, after the flow rate adjustment valve 97 is fully opened, in step S4, the drying condition setting unit 92 of the control unit 12 determines that the exhaust temperature of the dry air discharged from the inside of the inner body 4 is the first. It is determined whether the temperature becomes higher than 1. If the temperature has not reached the first temperature, the drying condition setting unit 92 of the control unit 12 fully opens the flow rate adjusting valve 97 in step S3. When the exhaust temperature becomes higher than the first predetermined temperature in step S4, the drying condition setting unit 92 of the control unit 12 throttles the flow rate adjusting valve 97 from the fully opened state in step S5 to supply the amount of steam to the heater 56. To reduce. As a result, the temperature of the heater 56 begins to drop.

Next, the drying condition setting unit 92 of the control unit 12 determines in step S6 whether the temperature of the discharged dry air is lower than the second temperature lower than the first temperature. If the drying condition setting unit 92 of the control unit 12 determines that the temperature of the discharged dry air is not lower than the second temperature in step S6, that is, if it is higher than the second temperature, step S5 is executed and the flow rate adjusting valve 97 is executed. Is narrowed down. When the drying condition setting unit 92 of the control unit 12 determines that the exhaust temperature has become lower than the second temperature in step S6, the flow rate adjusting valve 97 is opened in step S7 to increase the amount of vapor supplied to the heater 56. , Raise the exhaust temperature.

Next, the drying condition setting unit 92 of the control unit 12 determines whether or not the operation of the dryer 1 is completed in step S8, that is, whether or not the operation of the dryer 1 is completed, and the drying is completed. If not, step S4 and subsequent steps are repeatedly executed. During the operation of the dryer 1, the drying condition setting unit 92 of the control unit 12 controls the amount of steam supplied to the heater 56 such that the temperature of the drying air discharged from the inner body 4 is the first temperature and the second temperature. The flow rate adjusting valve 97 is controlled to be opened and closed so as to be maintained between the above and Then, when the drying condition setting unit 92 of the control unit 12 which has finished the operation of the dryer 1 determines in step S8, the flow rate adjusting valve 97 is fully closed and the supply of steam to the heater 56 is stopped.

As described above, according to the present embodiment, the sealing mechanism 35, 36 or the sealing mechanism 39, 40, 105 is provided between the axial end of the inner body 4 and the axial end of the outer body 3. , 106, it is possible to prevent the discharge of the dry air from the axial ends of the inner body 4 and the outer body 3, and to prevent the dry air that does not contribute to the drying of the object to be dried 10. Since it can be reduced, the drying efficiency can be improved. Further, by providing the seal mechanisms 35, 36 or the seal mechanisms 39, 40, 105, 106 at the axial end portions of the inner body 4 and the outer body portion 3, the axial end portions of the inner body 4 and the outer body portion 3 are formed. Further, it is possible to prevent the material to be dried, the lint, and the like from being caught. Further, since the seal members 39a and 105a are provided on the axial center side of the inner body 4 and the corner embedding member 44 is provided, the material to be dried is provided at the corner where the annular member 37 of the inner body 4 and the peripheral end wall 41 are continuous. 10 does not stay.

While the embodiments of the invention have been disclosed, as described above, it will be apparent to those skilled in the art that changes may be made without departing from the scope of the invention. It is intended that all such modifications and equivalents be covered by the following claims.

The dryer according to the present invention is a commercial-use dryer for drying linen products such as sheets, pillowcases and towels, and mops, mats and other washed laundry, and a continuous washing machine for continuous washing. It can be used in a dryer for drying laundry.

1 Dryer 2 Dryer Case 3 Outer Body 4 Inner Body 5 Rotation Drive Mechanism 6 Dry Air Supply/Discharge Unit 35 36 Seal Mechanism 39 40 Seal Mechanism 105 106 Seal Mechanism

Claims (4)

A tubular outer body portion (3) provided in the dryer casing (2) ,
A tubular inner body (4) rotatably supported inside the outer body portion (3) and into which the material to be dried is put;
A rotary drive mechanism (5) for rotationally driving the inner body (4) in the outer body (3) ,
With said outer barrel (3) drying air supply and discharge unit for discharging outwardly the drying air supplies dry air heated takes in outside air into the outer barrel (3) in (6), the A dryer (1) ,
A sealing mechanism (35, 39, 105) is provided between the axial end of the inner body (4) and the axial end of the outer body (3) ,
An axial end portion of the inner body (4) has an inner body charging opening (27) into which the material to be dried is loaded, and the outer body (3) is loaded with the material to be dried. Having an end wall (19) in which an opening is formed,
The sealing mechanism (35, 39, 105) is provided in the entire area in the circumferential direction of the inner body (4) from the opening edge portion of the inner body insertion port (27) of the inner body (4) toward the inner side. The outer peripheral surface of the annular peripheral end wall (33), the inner peripheral surface of the end wall (19) of the outer body portion (3), and the seal member (35a) sandwiched between the outer peripheral surface and the inner peripheral surface. Formed,
On the inner peripheral surface of the end wall (19) of the outer body portion (3), a peripheral wall (19a, which is inside the seal member (35a) and extends toward the inside of the outer body portion (3)). 42, 110) are provided . Dryer (1) . An annular member (33) is attached to an axial end portion of the inner body (4) in the entire circumferential direction, and an opening edge portion (33a) on the end wall (19) side of the annular member (33) is formed. A peripheral wall (19a) that projects from the end wall (19) toward the inner side of the outer trunk portion (3) and is provided in the entire area in the circumferential direction; the opening edge portion (33a) and the peripheral wall (19a). The dryer (1) according to claim 1 , wherein the seal mechanism (35) is formed by the seal member (35a) sandwiched between the two . The outer peripheral surface (41b) of the opening end (41a) of the peripheral end wall (41), the inner peripheral surface (19b) of the end wall (19), the outer peripheral surface (41b) and the inner peripheral surface (19b). the sandwiched between the sealing member (39a) and de dryer of claim 1, wherein the sealing mechanism (39) is formed (1). An outer annular member (107) is attached to an axial end portion of the inner body (4) in the entire circumferential direction, and the outer annular member (107) is an inner body insertion port (27) of the inner body (4). The peripheral end wall (108) is formed by stacking two disk-shaped plate members on the end wall of the inner body charging opening (27), and the inner annular member (109) is formed at the opening edge of the peripheral end wall (108). ) Is mounted, and the space between the outer annular member (107) and the end wall (19) of the outer body portion (3) is sealed by the sealing mechanism (105),
The sealing mechanism (105) includes an outer peripheral surface (109a) of the inner annular member (109), an inner peripheral surface (19b) of the end wall (19), the outer peripheral surface (109a) and the inner peripheral surface (109a). The dryer (1) according to claim 1 , wherein the dryer (1) is formed by a seal member (105a) sandwiched between the dryer and the seal member (19b) .

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