JP2006149435A - Business drier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a business drier which has a high drying efficiency and is free from the biting of objects to be dried. <P>SOLUTION: The cylinder 210 of an inner drum 200 is provided with many holes 211, a ring-like front side mirror plate 220 is provided with many holes 222, and a rear side mirror plate 230 is provided with many holes 232 in an area 233 of a shape different from a circular shape centering a shaft 231, a rectangular shape for instance. The objects to be dried are fed into the inner drum 200, and heated air is blown into the inner drum 200 through many holes 222 from the front part of the inner drum 200 and through many holes 232 from the rear part of the inner drum 200. Since the end part at the front of the cylinder 210 is turned to the shape of being folded back to the inner side, the objects to be dried are prevented from being bitten in the gap of an outer drum 150 and the inner drum 200 by the rotation of the inner drum 200. Also, since the area provided with many holes 232 is not circular centering the axis of the inner drum 200, the heated air is applied to the objects to be dried variously accompanying the rotation of the inner drum 200 and the drying efficiency is improved. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a commercial dryer for drying towels, clothes and the like.

  Conventionally, a horizontal cylindrical inner cylinder made of a perforated plate is supported so as to be rotationally driven, the inner cylinder is covered with an outer cylinder with a gap between the inner cylinder except for the air inlet and the air outlet, and the air inlet is connected to the outer cylinder. A dryer in which an air outlet is provided, a heater is provided in an air passage that communicates the air inlet and the atmosphere side, and a moisture exhaust fan is provided in an air passage that communicates the air outlet and the atmosphere side is frequently used. Also, hot air is blown into the inner cylinder using the inlet side of the inner cylinder to be dried as an air inlet, and the exhaust exhausted from the inner cylinder to the outer cylinder side is exhausted from the air outlet of the outer cylinder to the outside through the air passage through the air passage. There are many things to do (see Patent Documents 1 to 3).

JP-A-8-240385 (0025-0029, FIG. 1) JP-A-8-240386 (0036,0037, FIG. 1) JP-A-9-206500 (0017, FIG. 1)

In the conventional dryer, if the inner cylinder is caused to generate an air flow from the clothing input side to the extraction side, the clothing etc. is pushed to the extraction side, and hot air that is not left for drying is removed from the perforated plate of the inner cylinder. There is a lot of air escaping to the outer trunk, which is not efficient. Also, heated air is supplied from the air inlet of the outer cylinder, supplied and exhausted through the perforated plate over the inside and outside of the inner cylinder, and then exhausted from the air outlet of the outer cylinder has high air resistance and is effective for drying. Heated air is exhausted without being used. Therefore, in order to solve these problems, hot air is blown directly into the inner cylinder from both end surfaces of the horizontal cylindrical inner cylinder that is open at both ends, and exhaust air is drawn from the lower side of the inner cylinder to the outer cylinder side with a moisture exhaust fan. A dryer that exhausts to the outside is known (see Patent Document 4).
JP 2004-105694 A

  In this dryer, although the drying efficiency is dramatically improved, there is a risk of clothing being caught in the gap between the open end of the rotating inner cylinder and the fixed outer cylinder. In addition, it is required to prevent biting.

(1) The commercial dryer according to the first aspect of the present invention has a substantially horizontal cylindrical shape with end plates provided at both ends, a perforation is provided on the peripheral surface of the cylinder, and the front end plate among the end plates at both ends is provided. Is provided with an opening for charging and discharging the material to be dried and a hole is provided around the opening, and the rear end plate has a shape different from a circular shape centering on the axial direction of the cylinder A perforation is provided in the inner cylinder that is driven to rotate about the axial direction of the cylinder, a motor that rotationally drives the inner cylinder, a heater that heats inflowing outside air, and air heated by the heater is passed through the inner cylinder. A fan that blows air to the outside and a first blow that is provided in front of the inner cylinder and blows heated air that is introduced into the inner cylinder by the fan toward the inside of the inner cylinder through a hole in the front end plate Provided behind the mouth and the inner trunk, A second inlet for blowing heated air introduced into the inner cylinder by a fan toward the inner side of the inner cylinder through a hole in the end plate, and a first inlet for guiding the heated air from the heater to the first inlet A side air passage, a second inlet side air passage that guides the heated air from the heater to the second blow-in port, and the heated air that has been introduced into the inner cylinder and has dried the material to be dried on the circumferential surface of the cylinder An outlet-side air passage that leads to the outside through an air outlet provided below the peripheral surface of the inner cylinder through the provided porosity is characterized.
(2) The commercial dryer according to the second aspect of the present invention has a substantially horizontal cylindrical shape with end plates provided at both ends, and a perforation is provided on the peripheral surface of the cylinder. Is provided with an opening for charging and discharging the material to be dried and a hole is provided around the opening, and the rear end plate has a shape different from a circular shape centering on the axial direction of the cylinder An inner cylinder that is provided with a hole in the inside and is driven to rotate about the axial direction of the cylinder, a motor that rotationally drives the inner cylinder, a heater that is provided above the inner cylinder and that heats the incoming outside air, and a heater A fan that blows the air heated by the outside through the inner cylinder and the front of the inner cylinder, and the heated air introduced to the inner cylinder by the fan through the perforation of the front end plate A first blow-in port that blows inward, When the inner cylinder is viewed from the axial direction, a second blowing port that is provided at the rear and blows heated air that is introduced into the inner cylinder by a fan toward the inside of the inner cylinder through the perforation of the rear end plate A first plane that is horizontal on the upper and lower sides of the outer side of the inner cylinder, a second plane that is parallel to the axis and is orthogonal to the first plane on the left and right sides of the outer side of the inner cylinder, and a cylinder of the inner cylinder, A first air passage that guides the heated air from the heater to one of the first blowing port and the second blowing port, and a first blowing port that feeds the heated air from the heater. And a second air passage that leads to one of the second blowing ports, and heated air that has been introduced into the inner cylinder and dried the object to be dried, passes through the perforations provided on the peripheral surface of the cylinder, Outlet air that leads to the outside through an air outlet provided below the circumference of the trunk Characterized in that it comprises a road.
(3) The invention according to claim 3 is the commercial dryer according to claim 1 or 2, wherein the second blow-in port is provided above the axis of the cylinder and facing the porosity of the rear end plate. The first blowing port is provided above the second blowing port so as to face the perforation of the front end plate.
(4) The commercial dryer according to the invention of claim 4 has a substantially horizontal cylindrical shape with end plates provided at both ends, a perforation is provided on the peripheral surface of the cylinder, and the front end plate among the end plates at both ends is provided. Is provided with an opening for charging and discharging the material to be dried, and a rear end plate is provided with a shaft-like member vertically and a perforation, and an inner cylinder supported and rotated by the shaft-like member. A motor that rotates the inner cylinder, a heater that is provided above the inner cylinder and that heats inflowing outside air, a fan that blows air heated by the heater to the outside through the inner cylinder, and an inner cylinder A first blowing port that is provided in the front and blows heated air introduced into the inner cylinder by a fan toward the inside of the inner cylinder, and provided in the rear of the inner cylinder, through the perforation of the rear end plate, The heated air introduced into the inner cylinder by the fan is directed to the inside of the inner cylinder. A second blow-in port that blows in, the first plane that is horizontal on the upper and lower sides of the outer side of the inner cylinder, as viewed from the axial direction, Utilizing a space surrounded by the second plane perpendicular to the first plane and the cylinder of the inner cylinder, the heated air from the heater is guided to either the first blowing port or the second blowing port. After the first air passage, the second air passage for guiding the heated air from the heater to one of the first blowing port and the second blowing port, and being introduced into the inner body to dry the object to be dried An outlet side air passage that guides the heated air to the outside through an air outlet provided below the peripheral surface of the inner trunk through a hole provided on the peripheral surface of the cylinder.

(1) In the commercial dryer according to the first and second aspects of the invention, the rear end plate is different from the circular shape about the axial direction of the cylinder with respect to the inner cylinder provided with end plates on both ends. A perforation was provided in a range exhibiting a shape, and heated air was blown toward the inside of the inner cylinder that was rotationally driven from the second blowing port through the perforation. Thereby, while being able to prevent a to-be-dried object from biting in the opening part of a rotating inner cylinder, the flow of the heating air blown into the inner cylinder through a hole changes according to the rotation phase of the inner cylinder. As a result, the manner in which the heated air strikes the object to be dried is changed, so that there is no uneven drying and the drying efficiency is improved.
(2) In the commercial dryer according to the invention of claim 2 and claim 4, when the inner cylinder is viewed from the axial direction, the first flat surface that is horizontal above and below the outer side of the inner cylinder, and the outer side of the inner cylinder An air passage that guides heated air from the heater is provided by using a space surrounded by a second plane that is parallel to the axis and perpendicular to the first plane and the cylinder of the inner cylinder. Configured. Thereby, since the space between the inner cylinder which exhibits a horizontal cylindrical shape and the housing | casing of a commercial dryer can be used effectively, a commercial dryer can be reduced in size.

--- First embodiment ---
A first embodiment of a commercial dryer according to the present invention will be described with reference to FIGS. 1-3 is a figure which shows the commercial-use dryer of 1st Embodiment, FIG. 1 is a front view, FIG. 2 is a side view, FIG. 3 is a rear view. A commercial dryer (hereinafter, simply referred to as a dryer) 1 is a device that dries an object to be dried such as towels and clothes put in a rotating horizontal cylindrical drum with air heated by steam as a heat source. is there. In the following description, the front and rear, right and left and up and down directions are defined as shown in the drawings, and the description will be made based on these directions.

  The dryer 1 includes a casing 100, a substantially horizontal cylindrical inner cylinder 200 disposed so that an axis thereof coincides with the front-rear direction of the casing 100, a driving device 300 that rotationally drives the inner cylinder 200, an air A steam heater 400, a blower 500 that blows heated air heated by the heater to the outside through the inner body 200, and a lint screen 600 that filters cotton dust generated from an object to be dried. Yes. On the front surface of the housing 1, a charging / discharging door 110 is provided for feeding the material to be dried into the inner body 200 and for taking out the material to be dried from the inner body 200.

  The casing 100 is a box-shaped strength member having a substantially rectangular parallelepiped shape, and each device constituting the dryer 1 is attached. In the following description, the front plate of the housing 100 is referred to as the front end plate 101, the rear plate is referred to as the rear end plate 102, the upper surface plate is referred to as the top plate 103, and the left and right side plates are referred to as the side plates 104 and 105. Call. The left / right end of the loading / unloading door 110 is rotatably supported by the front end plate 101 of the housing 100 by a hinge structure (not shown), and is rotated horizontally around the rotation center of the hinge structure. The circular opening on the front surface of the housing 100 is opened and closed. In addition, the circular opening part of the housing | casing 100 which the opening / closing door 110 opens and closes faces the opening part provided in the end plate of the front surface of the inner trunk | drum 200 mentioned later.

  In the vicinity of a handle (not shown) provided on the right side of the charging / discharging door 110, a start / stop switch 111 having a high operation frequency for instructing operation and stop of the dryer 1 is provided. In addition, a controller 120 that controls the operation content of the dryer 1 and the operation state and setting content of the dryer 1 are displayed on the upper front surface of the housing 100, and the operation of the dryer 1 and the operation content of the dryer 1 are displayed. An operation panel 130 to be set is provided. The operation panel 130 is also provided with a start / stop switch for instructing operation and stop of the dryer 1.

  Either the start / stop switch 111 provided on the charging / discharging door 110 or the start / stop switch on the operation panel 130 can instruct the operation and stop of the dryer 1, but the start / stop switch 111 provided on the charging / discharging door 110. Since the installation position is lower, it can be operated easily. The position of the charging / discharging door 110 is determined in consideration of the human physique so that the material to be dried can be easily input and discharged. For this reason, the arrangement position of the loading / unloading door 110 is also a position where the operator can easily open and close. By providing a start / stop switch 111 on the charging / discharging door 110, the switch operation becomes easy.

  A front door 140 that covers the lower front portion of the housing 100 from the front is provided at the lower front portion of the housing 100. By opening the front door 140, a lint screen 600 provided in the interior of the casing 100 described later can be attached and detached.

  FIG. 4 is a perspective view of the inner cylinder 200 as seen from the oblique front, FIG. 5 is a view of the inner cylinder 200 as seen from the oblique rear, and FIG. 6 is a cross-sectional view of the inner cylinder 200 as seen from the front. is there. The inner body 200 is a cylindrical member in which the front end plate 220 and the rear end plate 230 are provided on the front and rear end surfaces of the cylinder 210. On the peripheral surface of the cylinder 210, a hole 211 is provided within a predetermined range in the axial direction of the cylinder 210 sandwiched between two-dot chain lines a and b in FIGS. The range sandwiched between the two-dot chain lines a and b provided with the perforations 211 is located substantially directly above the opening portion of the lower part of the outer cylinder, which will be described later, which constitutes the air passage leading to the lint screen 600. The distance between the two-dot chain lines a and b is substantially equal to the depth in the front-rear direction of the opening at the lower part of the outer body and the depth in the front-rear direction of the upper part of the lint screen 600.

  On the inner peripheral surface of the cylinder 210, a plurality of (four in this embodiment) crosspieces 212 are erected in parallel with the axis of the cylinder 210. Ring-shaped inner cylinder seal plates 213 and 214 are erected on the outer peripheral surface of the inner cylinder 210. As will be described later in detail, the inner cylinder seal plates 213 and 214, together with the outer cylinder seal plate provided inside the housing 100, play a role like a so-called labyrinth seal, thereby preventing the leakage of heated air.

  As shown in FIG. 4, the front end plate 220 is a disk-like member having an opening 221 at the center, and is provided at the front end of the cylinder 210. The inner body 200 is in such a state that the front end of the cylinder 210 is folded inward by the ring-shaped front end plate 220. The front end plate 220 is provided with a hole 222 in a ring-shaped region sandwiched between two-dot chain lines c and d.

  As shown in FIG. 5, the rear end plate 230 is a disk-like member having a shaft 231 implanted in the center, and is provided at the rear end of the cylinder 210. The inner body 200 is in a state in which the rear end of the cylinder 210 is closed by the rear end plate 230. The rear end plate 230 is provided with perforations 232 in a substantially square region sandwiched between two-dot chain lines e. As will be described later, the shaft 231 is connected to the output shaft of the speed reducer of the drive device 300 installed on the back surface of the dryer 1. Although not shown, it is preferable that a reinforcing material or the like is appropriately provided on the inner body 200 in order to improve the bonding strength between the shaft 231 and the rear end plate 230 and the rigidity of the inner body 200.

  FIG. 7 is a diagram illustrating a cross section when the dryer 1 is viewed from the front, and FIG. 8 is a diagram illustrating a cross section when the dryer 1 is viewed from the side. The drive device 300 includes a drive motor 310 and a speed reducer 320, and is fixed to a pedestal 330 joined to a strength member of the housing 100 at the rear of the housing 100 (FIGS. 2, 3, and 3). 8). The output shaft of the speed reducer 320 is a hollow shaft, and supports and fixes the shaft 231 of the inserted inner trunk 200. The shaft 231 is also rotatably supported by a bearing (not shown) attached to the rear end plate 102. Therefore, the inner trunk 200 is pivotally supported with respect to the housing 100 via the speed reducer 320 and the pedestal 330. When the drive motor 310 is driven, the driving force of the drive motor 310 is transmitted to the speed reducer 320 by belt or chain transmission, and the output shaft of the speed reducer 320 is rotationally driven. As a result, the inner body 200 is rotationally driven.

  An outer body 150 coupled to be integral with the housing 100 is provided inside the housing 100. As shown in FIGS. 7 and 9, the outer cylinder 150 is a cylindrical member having a substantially octagonal cross section formed so as to surround the cylinder 210 of the inner cylinder 200 from the outside. For convenience of explanation, with respect to each of the side surfaces 151 to 158 of the substantially octagonal cylinder of the outer cylinder 150, starting from the upper surface 151, the A surface, These are referred to as the B surface, C surface, D surface, E surface, F surface, G surface, and H surface.

  In FIG. 9, only the outer body 150 is extracted and illustrated, and the A surface 151 is a part of the top plate 103 of the housing 100, and the C surface 153 is a part of the side plate 104 of the housing 100. The G surface 157 is a part of the side plate 105 of the housing 100. Outer cylinder seal plates 160 and 170 having circular openings 161 and 171 are erected on the inner peripheral surface of the outer cylinder 150. The front outer cylinder seal plate 160 is removed when the inner cylinder 200 is inserted into the outer cylinder 150, and is inserted from the front after the inner cylinder 200 is inserted to be fixed to the side surfaces 151 to 158 of the outer cylinder 150. .

  An opening (hereinafter referred to as an outer trunk outlet) 159 is provided in the E surface 155. As will be described later, the outer cylinder outlet 159 is a part of a passage of heated air that dries the object to be dried and passes from the inside to the outside of the inner cylinder 200 toward the lint screen 600. It is the part that goes from the inside to the outside. That is, the outer trunk outlet 159 is an air outlet provided below the circumferential surface of the inner trunk 200. As described above, the position of the outer trunk outlet 159 on the E surface 155 is substantially directly below the range sandwiched between the two-dot chain lines a and b in which the hole 211 of the cylinder 210 is provided. The depth in the front-rear direction of the outer trunk outlet 159 is substantially equal to the distance between the two-dot chain lines a and b.

  In the outer body 150, the rear end surfaces of the plate members constituting the A surface 151 to the H surface 158 are abutted against the rear end plate 102 of the housing 100, and the other surfaces 151, 153 except for the B surface 152 and the H surface 158. The front end face of the plate member constituting 157 is disposed in the casing 100 in a state where the front end face is abutted against the front end plate 101 of the casing 100. As shown in FIG. 10, the B surface 152 and the H surface 158 together with the top plate 103 and the side plates 104 and 105 extend in the front-rear direction of the dryer 1 and have a substantially triangular cross section (front / rear duct). 181 and 182 are formed. The front and rear ducts 181 and 182 are ducts for blowing heated air heated by a steam heater 400 described later from the rear to the front of the dryer 1.

  FIG. 11 is a perspective view showing the front and rear ducts 181 and 182 and the front and rear portions thereof in the vicinity of the upper portion of the casing 100 including the outer body 150. The rear end portions of the front and rear ducts 181 and 182 are connected to the heater duct 420, and the front end portions of the front and rear ducts 181 and 182 are blown in to blow heated air heated by the steam heater 400 from the front surface of the inner body 200 to the inside. It is connected to the front blowing parts 183 and 184 provided with the mouth. The front blowing parts 183 and 184 will be described in detail later.

  The steam heater 400 is a heat exchanger that heats the air sucked into the dryer 1 using supplied steam as a heat source, and is attached to a heater duct 420 attached to the rear end plate 102 of the dryer 1 (see FIG. 2, 3, 8). In the upper part of the rear end plate 102 to which the heater duct 420 is attached, substantially triangular openings 102a and 102b are provided for allowing the heater duct 420 and the front and rear ducts 181 and 182 to communicate with each other. The openings 102a and 102b correspond to the rear ends of the front and rear ducts 181 and 182. The rear end plate 102 is provided with a rear blowing port 102c which is a rectangular opening. This rear side blowing port 102 c constitutes a blowing passage for blowing heated air from the heater 400 together with the heater duct 420 from the rear side of the inner body 200 to the inside of the inner body 200. That is, the rear blowing port 102 c is provided at the rear of the inner cylinder 200, and directs heated air introduced into the inner cylinder 200 by the blower 500 through the perforations 232 of the rear end plate 230 toward the inner side of the inner cylinder 200. It is a blow-in mouth that blows in.

  The heater duct 420 blows air heated by the steam heater 400 from the front and rear of the inner cylinder 200 to the inside of the inner cylinder 200, and the flow of heated air toward the front of the inner cylinder 200, It is a duct that distributes to the flow of heated air from the rear toward the inside of the inner body 200. That is, the heater duct 420 includes openings 102 a and 102 b connected to the front and rear ducts 181 and 182, and a rear side inlet 102 c that blows air heated by the steam heater 400 from the rear of the inner cylinder 200 into the inner cylinder 200. It is a duct for distributing to. In addition, although not shown in the figure, inside the heater duct 420, the heated air that goes to the front of the inner cylinder 200 and the heated air that goes from the rear of the inner cylinder 200 to the inside of the inner cylinder 200 are distributed appropriately. An air passage is constituted by a partition plate or the like.

  An opening 421 for taking in the heated air from the steam heater 400 is provided on the rear surface of the heater duct 420. In the present embodiment, an exhaust duct, which will be described later, is provided on the rear left side of the dryer 1, and in order to prevent interference between the exhaust pipe disposed directly above the exhaust duct and the steam heater 400, steam is provided. The opening 421 is provided in a state offset to the right side so that the heater 400 can be arranged offset to the right side. Further, an opening 422a is provided on the upper surface 422 of the heater duct 420 for taking in cooling air after drying the object to be dried. As shown in FIGS. 2 and 3, a damper 460 that is opened and closed by an actuator is attached to the opening 422a.

  As shown in FIG. 2, the heater duct 420 is provided with an inlet temperature sensor 121 that measures the temperature of the heated air heated by the steam heater 400. Based on the temperature of the heated air detected by the inlet temperature sensor 121, the controller 120 appropriately adjusts a valve that controls the flow rate of steam to the steam heater 400 so that the temperature of the heated air set on the operation panel 130 is reached. . The temperature of the heated air measured by the inlet temperature sensor 121 is displayed on the display unit of the operation panel 130.

  The front blowing portions 183 and 184 are front end portions of the front and rear ducts 181 and 182, and are located at the center of the outer drum 150, that is, the inner drum 200 disposed inside the outer drum 150 after the dryer 1 is assembled. The duct is disposed so as to be substantially perpendicular to the B surface 152 and the H surface 158 toward the axis. 12 is a view showing a cross section taken along the XII-XII plane in FIG. 2 for the inner body 200 and the front blowing portions 183 and 184. FIG. In FIG. 12, the cross section of the front blowing parts 183 and 184 is shown. As shown in FIG. 12, the front blowing portions 183 and 184 are arranged in the state of approaching the front end plate 220 on the front surface of the front end plate 220 so as to overlap with the front end plate 220 of the inner trunk 200 when viewed from the front. Has been. Openings (front blowing ports) 183a and 184a are provided on the rear surface of the front blowing portions 183 and 184.

  The front blowing ports 183a and 184a allow heated air blown from the front and rear ducts 181 and 182 through the porous 222 provided in the front end plate 220 of the inner cylinder 200 from the front of the inner cylinder 200 to the inside of the inner cylinder 200. It is a blow-in opening for sending air toward. That is, the front blowing ports 183 a and 184 a are provided in front of the inner cylinder 200, and direct the heated air introduced into the inner cylinder 200 by the blower 500 through the perforations 222 of the front end plate 220 toward the inner side of the inner cylinder 200. The shape is determined so that the heated air is blown into a ring-shaped region sandwiched between the two-dot chain lines c and d of the front end plate 220 in which the porous 222 is provided. In the present embodiment, the front blowing ports 183 a and 184 a are formed by a part of two large and small arcs centering on the axis of the inner cylinder 200 and a part of two straight lines passing through the axis of the inner cylinder 200. It is an enclosed shape and is located inside a ring-shaped region sandwiched between two-dot chain lines c and d of the front end plate 220 when viewed from the front. Further, the positions of the front blowing ports 183a and 184a are arranged such that the centroid is above the centroid of the rear blowing port 102c and is away from the axis of the inner body 200.

  As shown in FIGS. 7, 8, and 13, a lint box 670 to which a lint screen 600 is attached is provided on the bottom surface of the outer cylinder 150, that is, below the outer cylinder outlet 159 provided on the E surface 155. The lint box 670 is a box-shaped member having openings on the front surface, the upper surface, and the back surface. The front surface of the lint box 670 is a part of the front door 140 of the housing 100. When the front door 140 is tightened, the front opening of the lint box 670 is sealed by the front door 140. The opening 672 on the upper surface of the lint box 670 is connected to an outer trunk outlet 159 provided on the E surface 155 of the outer trunk 150 as shown in FIG. An opening on the back surface of the lint box 670 is connected to an air inlet of a blower 500 described later. That is, the lint box 670 serves as a duct that connects the outer trunk outlet 159 and the air intake of the blower 500.

  As shown in FIGS. 2 and 8, an outlet temperature sensor 122 that measures the temperature of the heated air after drying the object to be dried 2 is provided in the vicinity of the opening 672 on the upper surface of the lint box 670. As will be described later, the controller 120 can determine the end point of the drying operation based on the temperature of the heated air after the object to be dried 2 detected by the outlet temperature sensor 122 is dried. The temperature of the heated air measured by the outlet temperature sensor 122 is displayed on the display unit of the operation panel 130.

  As shown in FIG. 13, the lint screen 600 is formed in a bag shape having one opening, and the opening-side end portion 601 is formed so that its diameter is larger than that of the cylindrical portion 602. It is. The lint screen 600 is fixed so as to be suspended from the central opening 621 of the drawer plate 620, and is attached to the lint box 670 together with the drawer plate 620 below the outer trunk outlet 159. The drawer plate 620 can be inserted into and removed from the lint box 670 in the front-rear direction, that is, in the direction perpendicular to the paper surface in FIG. The lint screen 600 and the drawer plate 620 can be detached from the lint box 670 by opening the front door 140.

  The lint screen 600 is a filter for filtering cotton dust and the like contained in the heated air after the object to be dried is dried by the inner cylinder 200, and the object to be blown out from the outer cylinder outlet 159 as indicated by an arrow 611. The heated air after drying the dried product flows from the inside of the cylindrical portion 602 of the lint screen 600 toward the outside.

  In the conventional lint screen 640 and drawer plate 650 shown on the right side of FIG. 13, the opening side end portion 641 of the lint screen 640 does not protrude so much outside the opening 651 of the drawer plate 650. Therefore, as indicated by an arrow 612, air that is not filtered by the lint screen 640 leaks outside the lint screen 640 along with cotton dust from the gap between the surface 653 where the lint screen 640 contacts the drawer plate 650 and the lint screen 640. Therefore, cotton dust comes out to the outside of the dryer 1.

  In order to solve this problem, in the lint screen 600 and the drawer plate 620 of the present embodiment, the opening side end 601 of the lint screen 600 is placed outside the opening 621 of the drawer plate 620 as shown on the left side of FIG. It is configured so as to overhang. Therefore, the distance x from the opening side end 601 of the lint screen 600 to the opening 621 of the drawer plate 620 is sufficiently secured. As a result, the air containing cotton dust cannot pass through the gap between the lint screen 600 and the surface 623 of the drawer plate 620 and is stopped in the vicinity of the opening end 601 as indicated by the arrow 613. This does not leak out of the lint screen 600.

  The blower 500 is provided at the lower back of the housing 100 so that the fan 501 is located behind the lint box 670 (FIGS. 2 and 8). As described above, the air inlet 503 of the blower is connected to the opening on the back surface of the lint box 670 (FIG. 8). When the fan 501 is rotationally driven by the motor 502, the air inside the lint box 670 to which the air inlet 503 is connected is sucked and exhausted. An exhaust port (not shown) of the blower 500 is connected to an exhaust duct 710 shown in FIGS.

  The exhaust duct 710 is a box-shaped duct provided on the lower left side of the back surface of the dryer 1, and an exhaust port 712 is provided on the upper surface. After installing the dryer 1, an exhaust pipe for discharging heated air after drying the object to be dried to the outside or the like is appropriately connected to the exhaust port 712.

--- About air flow ---
The flow of air in the dryer 1 configured as described above is as follows. First, the flow of air during drying will be described. The description will be made on the assumption that an object to be dried is put into the inner cylinder 200 and the inner cylinder 20 is rotationally driven. When the fan 501 of the blower 500 is rotationally driven, outside air is sucked from the rear surface of the steam heater 400 as indicated by an arrow 10 shown in FIGS. The sucked outside air is heated by the steam heater 400, and then is divided by the heater duct 420 into a flow toward the front and rear ducts 181 and 182 (arrows 21 and 22) and a flow toward the rear blowing port 102c (arrow 23). (FIG. 14).

  The heated air directed toward the front and rear ducts 181 and 182 flows through the front and rear ducts 181 and 182 from the rear to the front, and the flow direction is changed at the front blowing portions 183 and 184 as indicated by arrows 31 and 32. The air is blown from the front of the inner body 200 toward the inside of the inner body 200 through the holes 222 provided in the front end plate 220 of the inner body 200 from the front blowing ports 183a and 184a. The heated air blown into the inner cylinder 200 from the front blowing ports 183a and 184a is blown toward the diagonally lower rear of the inner cylinder 200 as shown in FIGS.

  The heated air toward the rear blowing port 102c is directed from the rear of the inner drum 200 toward the inner side of the inner drum 200 through the perforations 232 provided in the rear end plate 230 of the inner drum 200 from the rear blowing port 102c. Infused. As shown in FIGS. 8 and 14, the heated air blown into the inner cylinder 200 from the rear blowing port 102 c is blown toward an obliquely lower front side of the inner cylinder 200.

  As described above, the positions of the front blowing ports 183a and 184a are located above the centroid of the rear blowing port 102c. That is, the arrangement position of the front blowing ports 183a and 184a and the arrangement position of the rear blowing port 102c are different in the height direction. For this reason, as shown in FIGS. 8 and 15, the flow of heated air as shown by arrows 31 and 32 blown from the front blowing ports 183 a and 184 a causes the article to be dried 2 to move backward in the inner body 200. Acts as follows. The flow of heated air as shown by the arrow 23 blown from the rear blowing port 102c acts to move the material to be dried 2 forward in the inner body 200. Therefore, the to-be-dried object 2 moves in the front-rear direction inside the inner body 200, and the to-be-dried object 2 is replaced and stirred smoothly. Further, as shown in FIG. 8, the material to be dried 2 has an axial center perpendicular to the paper surface of FIG. 8 inside the inner cylinder 200 by the heated air blown from the front blow ports 183a and 184a and the rear blow port 102c. A rotational force is applied in the direction indicated by the arrow 3 around the center.

  The heated air blown into the inner cylinder 200 to heat the object to be dried 2 and deprived of moisture contained in the object to be dried 2 is a porous hole provided in the cylinder 210 of the inner cylinder 200 shown in FIGS. The air is blown out from the inner cylinder 200 to the outside of the inner cylinder 200, that is, inside the outer cylinder 150. As shown in FIGS. 7, 8 and 15, most of the heated air blown to the outside of the inner cylinder 200 is indicated by the arrow 41 from the porous 211 facing the outer cylinder outlet 159 at the lower part of the outer cylinder 150. It blows out downward.

  As shown in FIG. 15, the porous 211 provided in the cylinder 210 of the inner body 200 is sandwiched between two-dot chain lines a and b corresponding to positions substantially equal to the depth in the front-rear direction of the upper part of the lint screen 600. It is provided within a predetermined range. Accordingly, the heated air blown into the inner cylinder 200 is blown to the outside of the inner cylinder 200 from the perforations 211 positioned substantially immediately above the lint screen 600 as indicated by an arrow 41. Therefore, like the flow of heated air indicated by arrows 44 and 45, the inner surface near the front end portion and the rear end portion of the cylinder 210 is exposed to the outside of the inner body 200 without effectively acting on the object to be dried 2. There is no wasteful flow of heated air that would flow.

  As described above, inside the inner body 200, the flow of heated air as indicated by the arrows 31, 32 and 23 described above acts on the object to be dried 2 and the wasteful flow as indicated by the arrows 44 and 45 described above is generated. Therefore, drying efficiency can be improved because drying can be performed in a short time and drying unevenness is reduced.

  As described above, the hole 211 of the cylinder 210 is provided within a predetermined range sandwiched between two-dot chain lines a and b. That is, the porous 211 is provided behind the two-dot chain line a that is rearward from the front end plate 220 and is not provided in front of the two-dot chain line a. For this reason, the flow of heated air blown out from the perforations 211 to the outside of the inner body 200 acts to move the article to be dried 2 from the vicinity of the front end plate 220 to the rear. Therefore, the phenomenon that the material to be dried 2 does not protrude from the opening 221 of the front end plate 220 and is caught between the input / output door 110 and the outer body 150 can be prevented.

  The heated air blown to the outside of the outer cylinder 150 from the outer cylinder outlet 159 passes from the inside to the outside of the lint screen 600 via the opening 672 on the upper surface of the lint box 670 as shown in FIGS. As shown by the arrow 611, it blows and the cotton dust derived from the to-be-dried material contained in heated air is filtered. The heated air filtered by the lint screen 600 is sucked into the blower 500 from the air inlet 503 of the blower 500 connected to the lint box 670, as shown in FIG. In the blower 500, the suctioned heated air is boosted and discharged from the exhaust port of the blower 500. The heated air discharged from the blower 500 is discharged from the exhaust port 712 of the exhaust duct 710 to the outside as shown by an arrow 711 (FIG. 8).

  The heated air blown out from the front blowing ports 183a and 184a and the rear blowing port 102c is blown by the suction force of the blower 500 acting on the outer trunk outlet 159 via the lint box 670. Therefore, the atmospheric pressure in the vicinity of the outer trunk outlet 159 is lower than the atmospheric pressure in the vicinity of the front blowing ports 183a and 184a and the rear blowing port 102c. That is, a space 901 between the outer trunk outlet 159 and the cylinder 210 of the inner trunk 200 shown in FIG. 8 is a space 902 sandwiched between the front end plate 101 of the casing 100 and the front end plate 220 of the inner trunk 200, and The atmospheric pressure is lower than the space 903 sandwiched between the rear end plate 102 of the casing 100 and the rear end plate 230 of the inner trunk 200. In the dryer 1 of the present embodiment, in order to prevent the heated air from directly flowing from the spaces 902 and 903 into the space 901 without passing through the inside of the inner drum 200, The trunk seal plates 160 and 170 and the inner trunk seal plates 213 and 214 provided on the inner trunk 200 are disposed adjacent to each other. Since the sealing plate 160, 170, 213, and 214 act like a so-called labyrinth seal, the heated air can be prevented from flowing directly into the space 901 from the spaces 902 and 903.

  When the object to be dried is cooled, the damper 460 (FIGS. 2 and 3) is opened, and the outside air directly passes through the heater duct 420 as shown by the arrow 11 from the opening 422a provided in the upper surface 422 of the heater duct 420 as shown in FIG. Sucked into the inside. At this time, due to the pressure loss, the outside air that has passed through the steam heater 400 is hardly sucked. The outside air sucked into the heater duct 420 from the opening 422a becomes a flow (arrows 26 and 27) toward the front and rear ducts 181 and 182 and a flow (arrow 28) toward the rear air inlet 102c, as in the drying. Distributed. The air toward the front and rear ducts 181 and 182 and the air toward the rear blow-in port 102c are blown inside the dryer 1 in the same manner as in the above-described drying, and are discharged from the exhaust port 712 of the exhaust duct 710 to the outside of the machine. To be discharged.

  As is apparent from the above description, the air passage on the inlet side for introducing the heated air into the inner body 200 includes the steam heater 400, the heater duct 420, the openings 102a and 102b, the front and rear ducts 181 and 182, the front blowing portions 183 and 184, The front blowing ports 183a and 184a and the rear blowing ports 102c are configured. The air passage on the outlet side for discharging the heated air after drying the object to be dried out of the machine includes an outer trunk outlet 159, an opening 672, a lint box 670, an intake port 503, a fan 501, and an exhaust port of the blower 500 ( And an exhaust duct 710.

--- Flow of heated air from the rear of the inner body 200 ---
As described above, the heated air blown into the inner cylinder 200 from the rear of the inner cylinder 200 is blown from the rear blowing port 102c through the perforations 232 provided in the rear end plate 230 of the inner cylinder 200. The porous 232 is provided in a region 233 having a substantially square shape around the axis of the inner cylinder 200 that is rotationally driven, as indicated by a two-dot chain line e shown in FIG. As described above, since the region 233 provided with the perforations 232 is not circular with the axis of the inner cylinder 200 as the center, as shown in FIGS. 17 (a) to 17 (d), the position and range where the heated air is blown out. However, it changes with the rotation of the inner trunk 200. Therefore, the air volume and the blowing position of the heated air blown from the rear of the inner drum 200 into the inner drum 200 change as the inner drum 200 rotates.

  The heated air blown out from the rear blowing port 102c is blown into the inner body 200 from the entire region 233 provided with the perforations 232. In particular, as shown in FIGS. 18 (a) to (d), A large amount of air is blown from the hatched region 910 where the side blowing port 102c and the region 233 provided with the perforations 232 overlap. The shape of this region 910 changes in the order of FIGS. Therefore, the wind speed and blowing position of the heated air blown into the inner drum 200 from the rear of the inner drum 200, the area of the region where the heated air is mainly blown, and the like change as the inner drum 200 rotates. Thereby, how the heated air hits the object to be dried 2 varies in various ways.

  As a result of the inventors' experiment, as shown in FIG. 19 (a), if a hole 232 is provided outside the circle 234 in the range from the axis 231 to the top of the crosspiece 212, the drying efficiency may be reduced. I know it. That is, the porous 232 is preferably provided within the range of the circle 234. Therefore, as shown in FIG. 19B, it is not preferable that the region 233 where the porous 232 is provided protrudes outside the circle 234.

  In addition, in the case where the shape of the region where the porous 232 is provided is a circle centering on the shaft 231, there is no diversity in how the heated air hits the object to be dried 2 as described above. It is not preferable. In addition, the total area of the openings of all the porous 232 is desirably about 2/3 or less of the area of the region 233 where the porous 232 is provided. That is, it is desirable that the porous aperture ratio is approximately 66% or less. If the aperture ratio of the porous body exceeds 66%, the wind speed of the heated air blown into the inner body 200 is lowered, so that the drying efficiency is lowered.

--- Operation of dryer 1 ---
In the dryer 1 mentioned above, a to-be-dried object can be dried as follows. The material to be dried is thrown into the inner body 200 through the opening 221 by opening the charging / discharging door 110 while the dryer 1 is stopped. When the charging / discharging door 110 is closed and the start / stop switch 111 provided on the charging / discharging door 110 or the start / stop switch of the operation panel 130 is operated, the operation course set in advance on the operation panel 130 is used. Drying operation begins. The driving course will be described in detail later. First, the drive motor 310 is activated to rotationally drive the inner cylinder 200, and the motor 502 of the blower 500 is activated, and the heated air heated by the steam heater 400 is blown into the inner cylinder 200. . The steam heater 400 needs to be supplied with steam as a heat source. Further, during the drying operation, the damper 460 (FIGS. 2 and 3) is closed, and the opening 422a of the upper surface 422 of the heater duct 420 is closed.

  The drive motor 310 and the motor 502 are controlled by the controller 120. The controller 120 controls the movement of the inner body 200 by controlling the rotation speed, rotation direction, and energization time of the drive motor 310. Under the control of the controller 120, the inner body 200 rotates in various driving modes according to the type and amount of the object to be dried and the progress of drying, such as normal rotation and reverse rotation, repeated normal rotation and reverse rotation, and intermittent rotation. Driven. Further, the air flow rate of the blower 500 is changed as appropriate under the control of the controller 120. The temperature of the heated air blown into the inner cylinder 200 is controlled to be a predetermined temperature by controlling the flow rate of steam to the steam heater 400 by the controller 120.

  As shown in FIG. 7, the rotation of the inner body 200 repeats the movement of scraping up the article 2 to be dried by the crosspiece 212, releasing it inside the inner body 200, and dropping it. As described above, the object to be dried 2 that moves inside the inner body 200 is heated air that is blown from the front blowing ports 183a and 184a through the porous holes 222 and from the rear blowing port 102c through the porous holes 232 as described above. With the heated air blown in, the moisture is taken away and dried while a rotational force is applied in the direction indicated by the arrow 3 around the axis perpendicular to the paper surface of FIG.

  Further, as described above, the flow of the heated air blown from the rear blowing port 102c through the porous 232 changes depending on the rotation of the inner body 200, so that the heated air hits the object to be dried 2 in various ways. Change. Thereby, the drying efficiency of the to-be-dried object 2 improves, and drying time can be shortened. The heated air blown into the inner cylinder is blown out of the cylinder 210 from the hole 211 of the cylinder 210 as described above. In addition, since the air path from the steam heater 400 to the air blower 500 becomes a negative pressure by the suction flow by the air blower 500, heated air does not leak outside the machine.

  Whether the end point of the drying operation is determined based on the temperature of the heated air after drying the object to be dried 2 or the set drying time can be selected in advance. That is, it can be selected at the course selection stage before the start of operation. When the determination of the end point of the drying operation is set to be determined by the set drying time, when the drying time set by the timer of the controller 120 elapses, the drying operation ends and the cooling operation is performed. . When the end point of the drying operation is set to be determined by the temperature of the heated air after drying the object to be dried 2, the object to be dried 2 detected by the outlet temperature sensor 122 is dried. When the temperature of the heated air reaches a predetermined temperature, the drying operation ends and the cooling operation is performed.

  In the cooling operation, the damper 460 (FIGS. 2 and 3) is opened, and outside air is sucked from the opening 422 a on the upper surface 422 of the heater duct 420 and guided into the inner body 200. At this time, the inner body 200 is appropriately rotated. As described above, when the damper 460 is opened, the outside air that has passed through the steam heater 400 is hardly sucked, so that it is not necessary to stop supplying steam to the steam heater 400 during the cooling operation.

  As to the determination of the end point of the cooling operation, whether the determination is made based on the temperature of the air after the object to be dried 2 is cooled or the set cooling time is selected in advance, similarly to the determination of the end point of the drying operation. Is possible. When the determination of the end point of the cooling operation is set to be determined by the set cooling time, the cooling operation ends when the cooling time set by the timer of the controller 120 elapses. When the determination of the end point of the cooling operation is made based on the temperature of the air after cooling the object to be dried 2, the air after cooling the object to be dried 2 detected by the outlet temperature sensor 122 When the temperature reaches a predetermined temperature, the cooling operation ends.

  When the cooling operation is finished, the drive motor 310 is stopped, the rotational drive of the inner drum 200 is stopped, and the motor 502 of the blower 500 is stopped, so that the air flow flowing through the inner drum 200 is stopped. By opening the charging / discharging door 110, the dried object can be taken out.

The commercial dryer according to the first embodiment described above has the following effects.
(1) By providing the front end plate 220 on the inner body 200, the front end of the cylinder 210 is configured to be folded inward. This prevents the object to be dried from being caught in the gap between the outer body 150 and the inner body 200 due to the rotation of the inner body 200, so that the object to be dried can be dried without damaging it. The reliability of the machine can be improved. Further, since the object to be dried is not caught in the gap between the outer cylinder 150 and the inner cylinder 200, the object to be dried lasts long without being damaged. Thereby, in the linen supply industry etc., since the lifetime of linen is extended, it can greatly contribute to cost reduction.

(2) Since the region where the porous 232 is provided is not a circle centered on the axis of the inner cylinder 200, the region 910 where heated air is blown out changes as the inner cylinder 200 rotates. Therefore, since the air volume and the blowing position of the heated air blown into the inner drum 200 from the rear of the inner drum 200 change with the rotation of the inner drum 200, the manner in which the heated air hits the object to be dried 2 is various. The drying efficiency can be improved.

(3) The front and rear ducts 181 and 182 extending in the front-rear direction of the dryer 1 are provided in a region surrounded by the top plate 103, the side plates 104 and 105, and the cylinder 210 of the inner body 200. Thereby, since the heated air can be blown from the rear to the front of the dryer 1 by effectively using the space inside the housing 100, the commercial dryer can be downsized.

(4) The start / stop switch 111 is arranged in the vicinity of the handle of the loading / unloading door 110. Thereby, since the switch with high operation frequency is disposed at a position that is easy for the operator to operate, it is highly convenient and the switch can be operated reliably.

(5) The perforation 211 of the cylinder 210 is configured to be provided behind the two-dot chain line a shown in FIG. Accordingly, the object to be dried 2 is moved rearward from the vicinity of the front end plate 220 by the flow of heated air blown out of the inner body 200 from the perforation 211, so that the object to be dried 2 is opened in the opening 221 of the front end plate 220. It is possible to prevent the object to be dried from being damaged by preventing the phenomenon of being caught between the outer body 150 and the like without protruding from the body. Accordingly, as in the case described above, the reliability of the commercial dryer can be improved, and in the linen supply industry and the like, the life of the linen is extended, which can greatly contribute to cost reduction.

--- Second Embodiment ---
A second embodiment of the commercial dryer according to the present invention will be described with reference to FIGS. In the following description, the same components as those in the first embodiment are denoted by the same reference numerals, and different points will be mainly described. 20-22 is a figure which shows the commercial-use dryer of 2nd Embodiment, FIG. 20 is a front view, FIG. 21 is a side view, FIG. 23 is a rear view. The commercial dryer (hereinafter simply referred to as a dryer) 5 according to the second embodiment uses a gas as a heat source for heating the outside air, and thus the dryer 1 according to the first embodiment. Is different.

  In order to heat the outside air blown into the inner body 200, a heating device 450 shown in FIGS. 23 is a side view of the heating device 450 as viewed from the left side of the dryer 5, and FIG. 24 is a cross-sectional view taken along the line II-II in FIG. The heating device 450 is provided with gas burners 470 and 480 for heating air and ducts 920 and 930.

  Each of the gas burners 470 and 480 has a structure in which a plurality of main burners 471 each having a plurality of gas outlets (nozzles) arranged linearly are arranged in parallel at a predetermined interval. As will be described later, the outside air heated by the gas burners 470 and 480 is blown from the front to the rear inside the duct 920 provided with the gas burners 470 and 480. The gas burner 470 disposed on the downstream side with respect to the sucked outside air is located near the top plate 103 so that the main burner 471 located on the upstream side is above the main burner 471 located on the downstream side. Inclined with respect to 103.

  A gas burner 480 provided on the upstream side of the gas burner 470 with respect to the outside air to be sucked is a position above the gas burner 470 and, like the gas burner 470, a main burner 471 located on the upstream side is located on the downstream side. Inclined with respect to the top plate 103 so as to be higher than 471. With respect to the flow of the sucked outside air, the upstream gas burner 480 is installed at a position higher than the downstream gas burner 480 so that the supply of the outside air to the downstream gas burner 470 is not hindered. Secondary air can be taken in sufficiently. That is, as the arrows 472 and 482 shown in FIG. 23 indicate that the air sufficiently flows between the adjacent main burners 471, incomplete combustion can be prevented.

  The reason why the gas burners 470 and 480 are inclined with respect to the top plate 103 so that the main burner 471 located on the upstream side is above the main burner 471 located on the downstream side is also the same. In other words, the main burner 471 positioned on the upstream side does not interfere with the supply of secondary air to the main burner 471 positioned on the downstream side, so that the main burner 471 positioned on the upstream side is less than the main burner 471 positioned on the downstream side. Are also arranged on the top.

  In order to prevent incomplete combustion, it is preferable to increase the difference in height between the gas burners 470 and 480 and the inclination angle of the gas burners 470 and 480 themselves as the velocity of the air flowing through the duct 920 increases.

  The ignition device 481a for igniting the gas burners 470 and 480 is provided only in the upstream gas burner 480. In order to ignite the downstream gas burner 470 with the gas flame ignited on the upstream gas burner 480, the gas burner 480 has a main burner 471 on the downstream side of the gas burner 480 and a main burner 471 on the upstream side of the gas burner 470 as shown in FIG. The right side of the gas burner 480 is moved backward so as to approach.

  FIG. 25 is a perspective view showing the structure of the ducts 920 and 930 of the heating device 450. The duct 920 is a substantially rectangular parallelepiped duct having an opening 921 on the front surface and an opening 922 on the rear surface of the lower surface. As described above, the gas burners 470 and 480 are disposed inside the duct 920. Behind the gas burner 470, a flap 923 that regulates the flow rate of the outside air flowing through the duct 920 is fixedly provided inside the duct 920. The fixing position of the flap 923 can be adjusted by rotating the lower end side in the front-rear direction of the dryer 5 around the vicinity of the upper end as shown in FIG. A duct 930 described below is disposed in the vicinity of the opening 921 on the front surface. The opening 922 at the rear of the lower surface is connected to a heater duct 940 described later.

  The duct 930 is provided so as to cover the upper part and the front surface of the duct 920. The duct 930 has a front opening 931 and a rear opening 932, and is provided on the front surface of the duct 920, a substantially U-shaped rear intake duct portion 933 provided so as to cover an upper portion of the duct 920, And a front cover portion 934 having left and right side openings 934 and 935.

  The heater duct 940 flows air heated by the heating device 450 from the front and the rear of the inner cylinder 200 to the inside of the inner cylinder 200, the flow of heated air toward the front of the inner cylinder 200, It is a duct that distributes to the flow of heated air from the rear toward the inside of the inner body 200. In other words, the heater duct 940 has openings 102a and 102b connected to the front and rear ducts 181 and 182 and air blown into the inner body 200 from the rear side of the inner body 200 through the rear air inlet 102c. It is a duct for distributing to. In addition, although not shown in the figure, in the heater duct 940, the heating air that goes to the front of the inner cylinder 200 and the heating air that goes from the rear of the inner cylinder 200 to the inside of the inner cylinder 200 are distributed appropriately. An air passage is constituted by a partition plate or the like.

  The front surface of the heater duct 940 is attached to the rear end plate 102 of the dryer 1 in the same manner as the heater duct 420 of the first embodiment. An opening 941 for taking in heated air from the heating device 450 is provided behind the upper surface of the heater duct 940. The opening 941 is connected to the opening 922 at the rear of the lower surface of the duct 920. The heater duct 940 is provided with an exhaust duct, which will be described later, on the rear right side of the dryer 5, and is provided in an offset state on the right side to prevent interference between the exhaust duct and the heater duct 940.

  As shown in FIG. 21, the heater duct 940 is provided with an inlet temperature sensor 121 that measures the temperature of the heated air heated by the heating device 450. The controller 120 opens the valve for controlling the gas flow rate to the gas burners 470 and 480 so as to be the temperature of the heated air set by the operation panel 130 based on the temperature of the heated air detected by the inlet temperature sensor 121. To control. The temperature of the heated air measured by the inlet temperature sensor 121 is displayed on the display unit of the operation panel 130.

  As shown in FIG. 22, the exhaust port (not shown) of the blower 500 is connected to the exhaust duct 720. The exhaust duct 720 is a box-shaped duct arranged from the lower left side to the upper side of the back surface of the dryer 5 to the vicinity of the left side surface of the heater duct 940, and an exhaust port 730 is provided on the upper surface. A communication pipe 725 that connects the exhaust duct 720 and the heater duct 940 is provided between the exhaust duct 720 and the heater duct 940. After the dryer 5 is installed, the exhaust port 730 is appropriately connected to an exhaust pipe for discharging heated air after drying the object to be dried to the outside.

--- About air flow ---
The flow of air in the dryer 5 configured as described above is as follows. The air flow is the same at the time of drying and cooling, except that the gas burners 470 and 480 are different in whether or not the gas is burning. When the fan 501 of the blower 500 is rotationally driven, outside air is sucked from the openings 934 and 935 on the left and right side surfaces of the duct 930 and the opening 932 on the back surface into the opening 921 on the front surface of the duct 920. That is, as indicated by arrows 12, 13, and 14 in FIG. 25, the outside air is sucked from the left and right and the rear of the dryer 5 and flows backward in the duct 920. Note that the outside air sucked from the opening 932 flows on the outer upper surface of the duct 920, thereby lowering the temperature of the upper surface of the duct 920 heated by the gas burners 470 and 480, and sucked from the opening 932 to the opening 921. Preheat the outside air.

  The outside air sucked into the duct 920 is heated by the gas burners 470 and 480 and then blown out from the opening 922 at the rear of the lower surface as indicated by the arrow 15. As described above, since the opening 941 of the heater duct 940 is connected to the opening 922, the heated air (arrow 15) blown out from the opening 922 passes through the opening 941 of the heater duct 940 as shown in FIG. 940 flows into the interior of 940. Similar to the heater duct 420 of the first embodiment, in the heater duct 940, the flow of the heated air flows toward the front and rear ducts 181 and 182 (arrows 17 and 16) and the flow toward the rear blowing port 102c (arrow 23). And distributed.

  FIG. 27 is a diagram showing the flow of heated air in a cross section when the dryer 5 is viewed from the front, and FIG. 28 is a diagram showing the flow of heated air in the cross section when the dryer 5 is viewed from the side. is there. Since the flow of the heated air from the heater duct 940 to the exhaust duct 720 is the same as that in the first embodiment, detailed description thereof is omitted.

  The heated air (exhaust gas) discharged from the blower 500 flows upward in the exhaust duct 720 as indicated by an arrow 721. A part of the exhaust flows from the exhaust duct 720 via the communication pipe 725 to the heater duct 940 as indicated by an arrow 722 and is blown again into the inner body 200. The remaining exhaust is discharged from the exhaust port 730 to the outside of the machine.

  As is clear from the above description, the air passage on the inlet side for introducing the heated air into the inner body 200 has ducts 920 and 930, an opening 922, an opening 941, a heater duct 940, openings 102a and 102b, front and rear ducts 181, 182, The front blowing portions 183 and 184, the front blowing ports 183a and 184a, and the rear blowing port 102c are configured. The air passage on the outlet side for discharging the heated air after drying the object to be dried out of the machine includes an outer trunk outlet 159, an opening 672, a lint box 670, an intake port 503, a fan 501, and an exhaust port of the blower 500 ( And an exhaust duct 720.

--- Operation of dryer 5 ---
In the dryer 5 described above, the object to be dried can be dried as follows. The material to be dried is thrown into the inner body 200 through the opening 221 by opening the charging / discharging door 110 while the dryer 1 is stopped. When the charging / discharging door 110 is closed and the start / stop switch 111 provided on the charging / discharging door 110 or the start / stop switch of the operation panel 130 is operated, the operation course set in advance on the operation panel 130 is used. Drying operation begins. The driving course will be described in detail later. First, the drive motor 310 is activated, the inner body 200 is rotationally driven, and the motor 502 of the blower 500 is activated, so that outside air is discharged from the openings 934 and 935 on the left and right side surfaces of the duct 930 and the opening 932 on the back surface. Sucked. Thereafter, the gas burner 480 is ignited by the ignition device 481a. The gas burner 470 is ignited by the flame of the gas burner 480.

  Control of the drive motor 310 and the motor 502 is the same as in the first embodiment described above. The temperature of the heated air blown into the inner body 200 is controlled to be a predetermined temperature by controlling the gas flow rate to the gas burners 470 and 480 by the controller 120.

  As in the first embodiment, the drying time set by the timer of the controller 120 elapses, or the temperature of the heated air after drying the object 2 detected by the outlet temperature sensor 122 is a predetermined temperature. When reaching the value, the drying operation is terminated and the cooling operation is performed. In the cooling operation, the gas burners 470 and 480 are extinguished, but the air flow is the same as in the drying operation.

  When the cooling time set by the timer of the controller 120 elapses or the temperature of the heated air after drying the object to be dried 2 detected by the outlet temperature sensor 122 reaches a predetermined temperature, the drive motor 310 is stopped. Thus, the rotational drive of the inner cylinder 200 is stopped, the motor 502 of the blower 500 is stopped, and the air flow flowing through the inner cylinder 200 is stopped. By opening the charging / discharging door 110, the dried object can be taken out.

The commercial dryer according to the second embodiment described above has the following operational effects in addition to the operational effects of the commercial dryer according to the first embodiment.
(1) The gas burners 470 and 480 are used to heat the air, and are arranged so as to be inclined so that the main burner 471 located on the upstream side is higher than the main burner 471 located on the downstream side with respect to the sucked outside air. Configured. Accordingly, even if the gas burners 470 and 480 are disposed inside the narrow duct 920, air sufficiently flows between the adjacent main burners 471, so that incomplete combustion can be prevented and safety is achieved, and the heating device 450 That is, the dryer 5 can be reduced in size.
(2) The gas burner 480 provided on the upstream side with respect to the outside air to be sucked is configured to be disposed at a position above the gas burner 470 provided on the downstream side. As a result, even when a plurality of gas burners are provided for the outside air to be sucked in, secondary air is sufficiently supplied to the downstream gas burner 470, so that incomplete combustion can be prevented and safety is ensured. The size of the apparatus 450 in the direction in which the gas burners 470 and 480 are arranged, that is, the dryer 5 can be reduced in size.
(3) The duct 930 is disposed so as to cover the upper portion of the duct 920, and outside air is sucked from the opening 932 on the back surface to the opening 921 on the front surface of the duct 920. As a result, the outside air flows on the outer upper surface of the duct 920, thereby lowering the temperature of the upper surface of the duct 920 heated by the gas burners 470 and 480 and preheating the outside air sucked from the opening 932 to the opening 921. In addition, heat efficiency can be improved at the same time as heat shielding measures on the upper surface of the duct 920, which is advantageous in terms of safety and economy.

---- Modified example ---
(1) In the above description, the start / stop switch 111 is provided near the right handle of the loading / unloading door 110, but the present invention is not limited to this. The position may be any position near the input / output door 110 and easy for the operator to operate. For example, it may be provided on the front end plate 101 on the right side of the input / output door 110, and May be provided. In addition to the operation panel 130 provided above the front surfaces of the dryers 1 and 5, the operation switch provided in the vicinity of the input / output door 110 is not limited to the start / stop switch 111 described above.

  FIG. 29 is an enlarged view of the operation panel 130 of the dryers 1 and 5. The operation panel 130 includes a power switch 131 for turning on / off the power of the dryers 1, 5, a start / stop switch 132 for instructing operation and stop of the dryers 1, 5, and an operation course of the dryers 1, 5. And a course selection switch 133 for selecting the above. The dryers 1 and 5 can set a plurality of operation courses in which operation conditions such as a drying time, a cooling time, and a temperature of heated air are changed according to the type of the object to be dried. The objects to be dried by the dryers 1 and 5 are diverse, such as clothes called so-called personal items, towels, sheets, yukata, and the like. The driving courses are different for different types of objects to be dried. In addition, even if the towels are the same, whether they are face towels or bath towels, the driving course will differ, and even if the sheets are sheets, it is also operated depending on whether they are sheets for comforters or sheets for mattresses. The course is different.

  In this way, the driving course that varies depending on the object to be dried is set and stored in advance by operating the operation panel 130. For example, driving condition No. 1 is set and stored with driving conditions suitable for drying personal items, and driving course No. 2 is set and stored with driving conditions suitable for drying face towels. A plurality of driving courses are set and stored. In the above description, the driving course is selected by the course selection switch 133 provided on the operation panel 130.

  However, the present invention is not limited to the above-described embodiment. For example, as shown in FIGS. 30B and 30C, separately from the course selection switch 133 provided on the operation panel 130, The driving course may be selected by a switch provided in the vicinity of the charging / discharging door 110 or the charging / discharging door 110. FIG. 30A is a diagram showing the start / stop switch 111 in the dryers 1 and 5 of the above-described embodiment.

  FIG. 30B is a diagram showing an example in which a start / stop switch 111, a course selection switch 113, and a display section 114 of a selected course are provided on the loading / unloading door 110. A desired driving course can be called by operating the course selection switch 113 from the plurality of driving courses set in advance on the operation panel 130 until the desired driving course number is displayed on the display unit 114. . After the desired driving course is called by the course selection switch 113, that is, when the start / stop switch 111 is operated in a state where the number of the desired driving course is displayed on the display unit 114, drying on the desired driving course is performed. Operation starts.

  FIG. 30 (c) shows an example in which a start / stop switch 111, a course selection switch 115 assigned to each driving course, and an indicator lamp 116 for displaying the selected course are provided on the loading / unloading door 110. FIG. A desired driving course can be called by operating a course selection switch 115 to which a desired driving course is assigned from among a plurality of driving courses set in advance on the operation panel 130. When the course selection switch 115 is operated, the indicator lamp 116 corresponding to the operated course selection switch 115 is turned on. After the desired driving course is called by the course selection switch 115, that is, when the start / stop switch 111 is operated with the indicator light 116 corresponding to the operated course selection switch 115 turned on, the desired driving course is displayed. The drying operation is started. In addition, the forms of these switches 111, 113, and 115, the display unit 114, and the indicator lamp 116 are merely examples, and the present invention is not limited to these forms.

(2) In the above description, the shapes of the front blowing ports 183 a and 184 a are two linear arcs centered on the axis of the inner cylinder 200 and two straight lines passing through the axis of the inner cylinder 200. The shape of the rear blowing port 102c is a horizontally long rectangle, but the present invention is not limited to this. The front blowing ports 183a and 184a are provided on the front end plate 220 of the inner cylinder 200 while ensuring the air volume and the velocity of the heated air blown from the front and rear ducts 181 and 182 and blown into the inner cylinder 200 so that the drying efficiency is not lowered. The shape is not limited to the above-described shape as long as air can be blown from the front of the inner cylinder 200 toward the inner side of the inner cylinder 200 through the formed porous 222. Also, the shape of the rear blowing port 102c is formed on the rear end plate 230 of the inner cylinder 200 while ensuring the air volume and the velocity of the heated air blown from the heater duct 420 and blown into the inner cylinder 200 so that the drying efficiency does not decrease. The shape is not limited to the above-described shape as long as air can be blown from the rear of the inner cylinder 200 toward the inner side of the inner cylinder 200 through the provided porous 232.

(3) In the above description, the shape of the region 233 where the perforations 232 are provided is a substantially square shape centering on the axis of the inner cylinder 200 that is rotationally driven, like the two-dot chain line e shown in FIG. However, the present invention is not limited to this. For example, as shown in FIGS. 31 (a) to 31 (h), the axis of the inner cylinder 200 that is driven to rotate inside the circle 234 in the range from the axis 231 to the top of the crosspiece 212, that is, the axis As long as the shape is different from the circular shape centered at 231, the region 233 provided with the porous 232 can take various shapes. In the above description and FIGS. 31 (a) to 31 (h), the centroid of the region 233 coincides with the center of the shaft 231, but the centroid of the region 233 and the center of the shaft 231 are illustrated. May not match.

  For example, the region 233 may be a polygon other than a quadrangle such as a triangle as shown in FIG. 30A, and the axis 231 is centered about a polygon such as a triangle as shown in FIG. The shape may be such that the rotation phases are shifted and overlapped. Moreover, as shown to FIG.30 (c), (d), you may comprise the area | region 233 in each side of a polygon with a curve. The region 233 may be an ellipse as shown in FIG. 30 (e), and as shown in FIG. 30 (f), the ellipse has a shape that is overlapped with the rotational phase centered on the axis 231 shifted. May be.

  The region 233 is not limited to a square as shown in FIG. 30 (g), but may be a rectangle. As shown in FIG. 30 (f), the regions 233 are overlapped with the rotational phase centered on the axis 231 shifted. It may be a simple shape. The shape of these regions 233 is merely an example, and the shape of the heated air blown from the rear of the inner cylinder 200 into the inner cylinder 200 by the rotation of the inner cylinder 200 is varied. The shape of the region 233 according to the present invention is not limited to these forms.

(4) In the above description, the front blowing portions 183 and 184 are provided in the front and rear ducts 181 and 182, respectively, and heated air is supplied from the front of the inner body 200 to the inside of the inner body 200 through the two front blowing ports 183 a and 184 a. However, the present invention is not limited to this. For example, the front blowing parts 183 and 184 are connected in front of the inner body 200, and heated air is blown into the inner body 200 through the porous holes 222 from the front blowing port provided in the connected front blowing part. You may comprise. In addition, the front side blowing port provided in the front blowing part connected in front of the inner trunk | drum 200 may be one place, and may be two or more places.

(5) In the above description, as shown in FIG. 8 and FIG. 32A, the heated air is prevented from flowing directly from the spaces 902 and 903 into the space 901 without passing through the inner body 200. Therefore, the outer cylinder seal plates 160 and 170 provided inside the outer cylinder 150 and the inner cylinder seal plates 213 and 214 provided in the inner cylinder 200 are disposed adjacent to each other. It is not limited. For example, as shown in FIG. 32 (b), the inner cylinder 200 is not provided with the inner cylinder seal plates 213 and 214, and the heat-resistant felts 165 and 175 are attached to the outer cylinder seal plates 160 and 170, respectively. You may comprise so that 175 may be sealed by making it contact the surrounding surface of the cylinder 210 of the inner trunk | drum 200 with the elasticity.

(6) In the above description, the front and rear ducts 181 and 182 are formed by the B surface 152, the H surface 158, the top plate 103, and the side plates 104 and 105, but the present invention is not limited to this. . As shown in FIG. 33, it extends in the front-rear direction of the dryer 1 and is surrounded by the D surface 154, the side plate 104, and the surface that extends the E surface to the right, and has a substantially triangular cross-sectional shape. A duct 186 extending in the front-rear direction of the dryer 1 and surrounded by a duct 185, an F surface 156, a side plate 105, and a surface extending the left side of the E surface, and having a substantially triangular cross-section. These can also be used as front and rear ducts for blowing heated air from the back to the front of the dryer 1. That is, when the inner cylinder 200 is viewed from the axial direction, the upper and lower sides of the inner cylinder 200 are parallel to the horizontal plane, the left and right outer sides of the inner cylinder 200 are parallel to the axis of the inner cylinder 200, and By using a space surrounded by a plane perpendicular to the horizontal plane on the upper and lower sides of the drum 200 and the cylinder 210 of the inner drum 200, the heated air can be blown from the rear to the front of the dryer 1. .

  In order to blow the heated air from the rear of the dryers 1 and 5 to the front, any one of these four front and rear ducts may be used, and any two or three may be used. Alternatively, all four front and rear ducts may be used. In the dryers 1 and 5 according to the present embodiment, the inner body 200 has a shaft 231 provided on the rear end plate 230 by an output shaft of the speed reducer 320 and a bearing attached to the rear end plate 102. It is rotatably supported. Therefore, since there is no roller for supporting and rotating the inner cylinder 200 from the peripheral surface of the cylinder 210 at a location corresponding to the front and rear ducts 185 and 186, the ventilation resistance of the front and rear ducts 184 and 185 does not increase. Moreover, since the support and rotation drive structure of the inner cylinder 200 can be configured at low cost, the manufacturing cost of the dryer can be reduced.

(7) In the above description, the heated air is blown forward from the rear of the dryers 1 and 5 by the front and rear ducts 181 and 182, but the present invention is not limited to this. The heated air blown from the steam heater 400 and the heating device 450 in front of the dryers 1 and 5 may be blown from the front to the rear of the dryers 1 and 5 by the front and rear ducts 181 and 182.

(8) In the above description, the number of bars 212 provided on the inner body 200 is four. However, in the present invention, the number of bars is not limited to four. Further, the crosspieces 212 do not have to be arranged so that the angular phases around the shaft 231 are equal pitches, and may be arranged at various pitches. Furthermore, each crosspiece 212 can be configured to have a different height.

(9) In the above description, the outlet temperature sensor 122 is provided in the vicinity of the opening 672 on the upper surface of the lint box 670, but the present invention is not limited to this. The outlet temperature sensor 122 only needs to be able to measure the temperature of the heated air after heating the article 2 to be dried by the inner body 200. Therefore, the outlet temperature sensor 122 is attached from the opening 159 to the vicinity of the inlets of the exhaust ducts 710 and 720. Can be provided at any position between. In this range, even if the detected temperature is compared between the case where the outlet temperature sensor 122 is installed at the most upstream position and the case where the outlet temperature sensor 122 is installed at the most downstream position, the difference between the detected temperatures is small. there is no problem.

(10) In the above description, the valve for controlling the steam flow rate to the steam heater 400 is appropriately adjusted based on the temperature of the heated air detected by the inlet temperature sensor 121 so that the temperature of the heated air becomes a predetermined temperature. However, the present invention is not limited to this. For example, during the drying operation, the controller 120 controls the opening degree of the damper 460, thereby adjusting the amount of outside air taken in from the opening 422a, thereby controlling the temperature of the heated air blown into the inner body 200. It may be. In other words, not by controlling the flow rate of steam to the steam heater 400 but by controlling the amount of outside air that is not heated with respect to the heated air heated by the steam heater 400, heating that is blown into the inner cylinder 200. You may make it control the temperature of air.

(11) In the above description, the end point of the cooling operation is determined by either the temperature of the air after cooling the object to be dried 2 selected in advance or the set cooling time. However, the present invention is not limited to this. For example, the cooling operation is terminated when at least one of the temperature of the air after cooling the object to be dried 2 set as the condition for terminating the cooling operation or the set cooling time is satisfied. It can also be configured. Thereby, since cooling time can be shortened, it can drive | operate efficiently.
(12) You may combine each embodiment and modification which were mentioned above, respectively.

  In the above embodiments and modifications, for example, the motor is the drive motor 310, the heater is the steam heater 400 or the heating device 450, the first blowing port is the front blowing ports 183a and 184a, and the second blowing port is Each corresponds to the rear blowing port 102c. The first inlet-side air passage corresponds to the heater duct 420 or the heater duct 940, the openings 102 a and 102 b, the front and rear ducts 181 and 182, and the front blowing portions 183 and 184. The second inlet side air passage corresponds to the heater duct 420 or the heater duct 940. The outlet-side air passage corresponds to the outer trunk outlet 159, the opening 672, the lint box 670, the intake port 503, the fan 501, the exhaust port of the blower 500, and the exhaust duct 710 or the exhaust duct 720. The first air passage corresponds to the front and rear ducts 181, 182, 185 and 186, and the second air passage corresponds to the heater duct 420 or the heater duct 940. The above description is merely an example, and when interpreting the invention, there is no limitation or restriction on the correspondence between the items described in the above embodiment and the items described in the claims.

It is a front view of business-use dryer 1 of a 1st embodiment. It is a side view of the dryer 1 of FIG. It is a rear view of the dryer 1 of FIG. It is the perspective view which looked at the inner trunk 200 from diagonally forward. It is the perspective view which looked at the inner trunk | drum 200 from diagonally back. It is sectional drawing which looked at the inner trunk | drum 200 from the front. It is a figure which shows the cross section when the dryer 1 is seen from the front. It is a figure which shows the cross section when the dryer 1 is seen from the side. 3 is a perspective view showing an outer trunk 150. FIG. 2 is a perspective view showing an outer body 150 and front and rear ducts 181 and 182. FIG. FIG. 3 is a perspective view showing front and rear ducts 181 and 182 and front and rear portions thereof in the vicinity of the upper portion of the casing 100 including the outer body 150. It is a figure which shows the cross section of the XII-XII surface in FIG. 2 about the inner trunk | drum 200 and the front blowing parts 183,184. It is sectional drawing which shows the structure of the lint screen 600 and the vicinity of the lint box 670, and is the figure written together with the structure of the lint screen 640 of the conventional dryer, and the structure of the lint screen 600 of this Embodiment. It is a figure which shows the flow of the heating air blown into the inner trunk | drum 200 at the time of drying. It is a figure explaining the flow of the heating air inside the inner trunk | drum 200. FIG. It is a figure which shows the flow of the air blown into the inner trunk | drum 200 at the time of cooling. It is a figure which shows sequentially a mode that the area | region 233 where the porous 232 is provided in the rear end panel 230 rotates by the rotation of the inner trunk | drum 200 from (a) to (d). It is a figure which shows sequentially a mode that the area | region 910 of the shaded part where the rear side blowing port 102c and the area | region 233 in which the porous 232 was provided changes by rotation of the inner trunk | drum 200 changes from (a) to (d). It is a figure explaining the area | region where the porous 232 is provided, (a) is a figure which shows the range in which the porous 232 should be provided, (b) is a figure which shows the example which is not preferable. It is a front view of the business-use dryer 5 of 2nd Embodiment. It is a side view of the dryer 5 of FIG. It is a rear view of the dryer 5 of FIG. It is a side view of the heating apparatus 450. It is II-II sectional drawing of FIG. It is a perspective view which shows the structure of the ducts 920 and 930 of the heating apparatus 450. FIG. It is a figure which shows the flow of the heating air blown into the inner trunk | drum 200. It is a figure which shows the flow of the heating air in a cross section when the dryer 5 is seen from the front. It is a figure which shows the flow of the heating air in a cross section when the dryer 5 is seen from the side. 3 is an enlarged view of an operation panel 130 of the dryers 1 and 5. FIG. It is a figure which shows the example of a layout of the switch provided in the vicinity of the charging / discharging door 110, (a) is a figure which shows the start / stop switch 111 in the dryer 1,5 of 1st and 2nd embodiment. (B) is a figure which shows the example which added the course selection switch 113 and the display part 114, (c) is a figure which shows the example which added the course selection switch 115 and the indicator lamp 116. . It is a figure which shows the modification of the shape of the area | region 233 where the porous 232 is provided, and it illustrates to (a)-(h). It is a figure explaining the structure which prevents the leakage of heated air, (a) is a figure which shows the structure in the dryers 1 and 5 of 1st and 2nd embodiment, (b) is a modification. FIG. It is a figure which shows the front-and-back ducts 185 and 186.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,5 Commercial dryer (dryer) 2 To-be-dried object 100 Case 101 Front end plate 102 Rear end plate 102a, 102b Opening 102c Rear side inlet 103 Top plate 104, 105 Side plate 110 Loading / discharging door 111 Start / stop switch 120 controller 130 operation panel 140 front door 150 outer cylinder 151-158 side 159 outer cylinder outlet 181, 182, 185, 186 front and rear ducts 183, 184 front blowing part 183a, 184a front blowing part 200 inner trunk 210 cylinder 211, 222, 232 Perforated 212 Cross 220 Front end plate 230 Rear end plate 231 Shaft 300 Drive device 310 Drive motor 320 Reducer 400 Steam heater 420, 940 Heater duct 450 Heating device 470, 480 Gas burner 500 Blower 501 Fan 503 Inlet 6 00 lint screen 670 lint box 672 opening 710,720 exhaust duct 920,930 duct

Claims (4)

It has a substantially horizontal cylindrical shape with end plates provided at both ends, and the periphery of the cylinder is perforated. Of the end plates at both ends, the front end plate has openings for feeding and discharging the material to be dried. In addition, a hole is provided in a portion around the opening, and a rear end plate is provided with a hole in a range having a shape different from a circular shape around the axial direction of the cylinder, and the axial direction of the cylinder An inner cylinder that is driven to rotate around
A motor for rotationally driving the inner cylinder;
A heater for heating the incoming outside air;
A fan for blowing air heated by the heater to the outside through the inner body;
A first air inlet provided in front of the inner cylinder, for blowing heated air introduced into the inner cylinder by the fan through the perforation of the front end plate, toward the inner side of the inner cylinder;
A second air inlet provided behind the inner cylinder, through which the heated air introduced into the inner cylinder by the fan is blown toward the inner side of the inner cylinder through a hole in the rear end plate;
A first inlet-side air passage for guiding heated air from the heater to the first blowing port;
A second inlet-side air passage for guiding heated air from the heater to the second blowing port;
The heated air that has been introduced into the inner cylinder and has dried the material to be dried passes through the pores provided in the peripheral surface of the cylinder and passes through the air outlet provided below the peripheral surface of the inner cylinder. A commercial dryer comprising an outlet-side air passage leading to It has a substantially horizontal cylindrical shape with end plates provided at both ends, and the periphery of the cylinder is perforated. Of the end plates at both ends, the front end plate has openings for feeding and discharging the material to be dried. In addition, a hole is provided in a portion around the opening, and a rear end plate is provided with a hole in a range having a shape different from a circular shape around the axial direction of the cylinder, and the axial direction of the cylinder An inner cylinder that is driven to rotate around
A motor for rotationally driving the inner cylinder;
A heater that is provided above the inner cylinder and that heats inflowing outside air;
A fan for blowing air heated by the heater to the outside through the inner body;
A first air inlet provided in front of the inner cylinder, for blowing heated air introduced into the inner cylinder by the fan through the perforation of the front end plate, toward the inner side of the inner cylinder;
A second air inlet provided behind the inner cylinder, through which the heated air introduced into the inner cylinder by the fan is blown toward the inner side of the inner cylinder through a hole in the rear end plate;
When the inner cylinder is viewed from the axial direction, the first plane that is horizontal on the upper and lower sides outside the inner cylinder and the first plane that is parallel to the axis on the left and right sides outside the inner cylinder, respectively. The heated air from the heater is guided to either the first blowing port or the second blowing port using a space surrounded by a second plane orthogonal to the cylinder and the cylinder of the inner cylinder. A first air passage;
A second air passage that guides heated air from the heater to the other of the first blowing port and the second blowing port;
The heated air that has been introduced into the inner cylinder and has dried the material to be dried passes through the pores provided in the peripheral surface of the cylinder and passes through the air outlet provided below the peripheral surface of the inner cylinder. A commercial dryer comprising an outlet-side air passage leading to In the commercial dryer according to claim 1 or claim 2,
The second blowing port is provided above the axis of the cylinder and facing the perforation of the rear end plate,
The business dryer according to claim 1, wherein the first blowing port is provided above the second blowing port so as to face a perforation of the front end plate. It has a substantially horizontal cylindrical shape with end plates provided at both ends, and the periphery of the cylinder is perforated. Of the end plates at both ends, the front end plate has openings for feeding and discharging the material to be dried. A rear end plate is provided with a shaft member vertically and a perforation, and an inner cylinder supported and rotated by the shaft member;
A motor for rotationally driving the inner cylinder;
A heater that is provided above the inner cylinder and that heats inflowing outside air;
A fan for blowing air heated by the heater to the outside through the inner body;
A first air inlet provided in front of the inner cylinder and for blowing heated air introduced into the inner cylinder by the fan toward the inner side of the inner cylinder;
A second air inlet provided behind the inner cylinder, through which the heated air introduced into the inner cylinder by the fan is blown toward the inner side of the inner cylinder through a hole in the rear end plate;
When the inner cylinder is viewed from the axial direction, the first plane that is horizontal on the upper and lower sides outside the inner cylinder and the first plane that is parallel to the axis on the left and right sides outside the inner cylinder, respectively. The heated air from the heater is guided to either the first blowing port or the second blowing port using a space surrounded by a second plane orthogonal to the cylinder and the cylinder of the inner cylinder. A first air passage;
A second air passage that guides heated air from the heater to the other of the first blowing port and the second blowing port;
The heated air that has been introduced into the inner cylinder and has dried the material to be dried passes through the pores provided in the peripheral surface of the cylinder and passes through the air outlet provided below the peripheral surface of the inner cylinder. A commercial dryer comprising an outlet-side air passage leading to

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