JPH05277292A - Drier for clothes - Google Patents

Abstract

PURPOSE:To enable the temperature of the hot air from each opening of a support ring to be kept uniform in a clothes drier of such type as having hot air supply openings within a sideward range from the lower section of the support ring for supporting the forward end of a rotary drum to contain drying clothes. CONSTITUTION:An air feed duct 4 is constituted of a delivery chamber section 42 continuous to a support ring, an approximately sector type flat communication chamber 43 communicated with the whole of the section 42, and a rectangular parellelopiped combustion chamber 41 connected from the lower section of the camber 43 to the rear side. Also, the combustion section of a gas burner 31 is so positioned as to be faced to the side wall lower section of the chamber 41, and air intake openings are formed on the rear edge upper section of the chamber 41 and on the upper section of the chamber 41 between the combustion section and the chamber 43, or on the chamber 43 above the intermediate section thereof. The intake air from the openings is used to restrain the partial rise of combustion exhaust.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clothes dryer, and in particular, a rotary drum accommodates a material to be dried such as clothes, and hot air is blown into the rotary drum to dry it. The present invention relates to a clothes dryer of a type adapted to be discharged by a device.

[0002]

2. Description of the Related Art Conventionally, in the clothes dryer of the type described above, a rotary drum is rotatably supported by being fitted externally to an annular support ring provided on the front surface of a casing, and is attached to this support ring. The air heated in the heating chamber communicating with the air supply duct is supplied as hot air into the rotating drum by the suction action of the fan device communicating with the inside of the rotating drum.

The air supply duct is composed of a discharge chamber portion which is arcuate as a whole and opens toward the inside of the rotary drum, and a heating chamber which communicates with the discharge chamber portion. In addition, the discharge chamber is often set in the range from the lower end to the side of the annular support ring due to the heating efficiency of the material to be dried by hot air and the configuration of the device. In the clothes dryer of this type, when the heating device in the heating chamber is a gas burner, the temperature of the hot air supplied into the rotary drum through the opening of the discharge chamber becomes uneven.

The combustion chamber as a heating chamber for accommodating the gas burner and the discharge chamber portion must be arranged at a certain distance in order to prevent abnormal overheating of the rotating drum brother. Since the heated air is supplied into the rotary drum by the air suction action of the fan device, the rising tendency of the combustion exhaust of the gas burner appears as it is in the temperature distribution of the hot air discharged from the discharge chamber, The hot air from the upper part of the chamber has a higher temperature than the hot air from the lower part.

The present invention has been made in view of the above point, and is described as follows: "From a lower portion of a support ring which is fitted to a front end portion of a rotary drum which contains an object to be dried and which rotatably supports the rotary drum. An air supply port for supplying hot air is provided in the area of the side part, and an air supply duct having a discharge chamber part corresponding to the air supply port and a combustion chamber communicating with the air supply port is connected to the support ring and is rotated. In the clothes dryer configured to discharge the humid air in the rotary drum by the fan device that communicates with the inside of the drum and suck the hot air in the combustion chamber into the rotary drum. It is an object to make the temperature uniform so that the drying efficiency can be improved.

[0006]

[Technical Means] The technical means of the present invention for solving the above-mentioned problem is that "the air supply duct (4) has a discharge chamber part (42) and a downstream end is opened in the entire area of the discharge chamber part (42). The flat fan-shaped communication chamber (43) that is continuously provided at a right angle downward with respect to the hot air discharge direction from the part, and a rectangular parallelepiped combustion chamber (41) connected to the rear from the lower part of the communication chamber (43). ), The combustion part of the gas burner (31) faces the lower part of the side wall of the combustion chamber (41), and the combustion chamber is formed between the upper part of the rear end surface of the combustion chamber and the combustion part and the communication chamber. The air suction opening is formed in the upper part of (41) or in the upper region of the communication chamber (43).

[0007]

The above technical means operates as follows. Combustion chamber
Since the combustion part of the gas burner (31) faces the lower part of the side wall of (41), the combustion hot air sucked by the fan device tends to rise and tends to concentrate in the upper region of the discharge chamber part (42). However, the gas burner (31) is provided on the lower side wall of the combustion chamber (41).
Of the rear end surface of the combustion chamber, and between the upper part of the combustion chamber (41) or a region above the middle of the communication chamber (43) between the combustion part and the communication chamber. Since the opening for use is formed, the rising tendency of the hot air is alleviated by the air sucked from these parts, and the hot air whose rising is suppressed by this is diffused to the lower space side of the communication chamber (43). ..

[0008]

[Effect] The rising tendency of the hot air is alleviated, and the hot air whose rising is suppressed by this is diffused to the lower space side of the communication chamber (43), so that it passes through the opening of the discharge chamber part (42). The temperature of the hot air supplied from each part of the air supply port into the rotary drum is made uniform, and the drying efficiency is improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the construction of the whole dryer for carrying out the present invention will be described in detail with reference to FIGS. [Outline of Overall Structure] As shown in FIG. 1, the casing (1) has an open / close lid (13) for closing the central opening of the support ring (3) arranged at the center of the front surface in a single-opening type. The opening / closing lid
One side of (13) is pivotally supported by the front surface of the casing (1) so as to be rotatable back and forth, and a grip (19) is arranged on the opposite side of the pivot.

In the casing (1), as shown in FIGS. 3 to 3, a rotary drum (10), an intake fan (F), a motor (15) for rotating both of them, the rotary drum ( Ten)
Support ring (3) that fits in the front open part of the and supports the front part of the rotating drum (10), and the air supply port (30) of this support ring (3)
To house the gas burner (31) for supplying heated air through the air supply duct (4) and the intake fan (F), and to exhaust to the outside of the casing (1) via the exhaust duct (51). Built-in exhaust fan device (5).

As shown in FIG. 1, the rotary drum (10) has a shaft plate (16) projecting from the center of the rear surface thereof and a mounting plate (1).
It is supported by the bearing part (11a) provided in 8), the front end is rotatably fitted to the outer periphery of the support ring (3) fixed to the casing (1), and is supported by this support ring (3). It is rotatably housed in the casing (1) in this manner. Then, the outer peripheral portion of the rotating drum (10) and the motor
The output shaft of (15) and the belt are driven. This allows
The rotary drum (10) is rotated by the operation of the motor (15). The internal structure of the rotary drum (10) is the same as that of a known one, and as shown in FIG. 2, chevron portions (17) (17) (17) (17) )
There is a ridge, and the to-be-dried material (M) is rotated by the chevron portion (17). Further, even when the amount of the material to be dried (M) is small, it is lifted up by the rotation of the rotary drum (10) and then drops, and the above operation is repeated according to the rotation of the material to be dried (M).

Since the rotating drum (10) is driven to rotate by the motor (15), as shown in FIG.
The belt (19) wound around the body of (0) is transmitted to the output pulley (P) of the motor (15) in such a manner that tension is applied by the intermediary wheel. Also, as shown in the figure, the output pulley (P) is belt-transmitted with the pulley of the intake fan (F), and the rotary drum (10) and the intake fan (F) are driven by the common motor (15). Is driven to rotate by belt transmission.

[Hot Air Supply Structure] In this embodiment, as shown in FIG. 2, the air supply port (3) provided at the lower right portion of the support ring (3).
The heated air heated by the gas burner (31) from (0) is supplied into the rotary drum (10).
As shown in FIG. 6, it is composed of a pair of unit burners (31a) (31a) in which the flame hole portions are continuous in the longitudinal direction, and the unit burners (31a) (31a) are housed in a burner box (32) opened to the side. .. Then, a nozzle body equipped with this burner box (32) and having a nozzle corresponding to each of the unit burners, and a valve device.
(V) is connected with piping (G),
The valve device (V) and the hose end (33) which is a gas inlet to the valve device (V) are fixed to the auxiliary plate (34), and the hose end (33) projects to the outside of the auxiliary plate (34). . The auxiliary plate (34) is a right triangle plate, and the rear wall (1
It is set to a size that closes the triangular opening formed by the corner part of 1) and the rear end of the bottom plate and the rear end of the side plate of the casing (1), and its peripheral edge is detachable by screwing the casing (1) or It is attached and fixed to the rear wall (11).

As shown in FIG. 2, the gas burner (31) has an air supply duct (4) connected to the air supply port (30) of the support ring (3).
It is arranged in the combustion chamber (41) of
As shown in Figure 4, the front of the casing (1) and the support ring
(3) is composed of a fan-shaped discharge chamber portion (42) and a flat communication chamber (43) connecting the discharge chamber portion (42) and the combustion chamber (41). The combustion chamber (41) is extended rearward from the lower rear surface, and the combustion chamber (41) is fixed to the casing (1).

The rear surface of the discharge chamber portion (42) has a support ring (3).
3, the rear surface of the discharge chamber portion (42) is formed with openings (40) (40) in a certain range from both ends of the fan shape as shown in FIG. 3, and these openings (40) It is closed during (40). Then, on the surface where the rear surfaces of the discharge chamber portion (42) are in contact with each other and coincide with the openings (40) and (40), there are formed open areas (30a) and (30b) in which a large number of small through holes are formed. This opening area functions as the air supply port (30) described above.

Therefore, in this embodiment, the gas burner (31)
The air heated by the combustion chamber (41) to the communication chamber (43)
Through the openings (40) (40) and the opening areas (30a) (30b) into the rotary drum (10), and the material to be dried in the rotary drum (10)
(M) is heated by this hot air. In this drying step by heating, since the rotating drum (10) and the intake fan (F) are rotated by the motor (15), the material to be dried (M) is not only agitated but also moved by suction. Fan (F)
The combustion exhaust gas of the gas burner (31) and the heated air are forcibly supplied from the air supply port (30) through the air supply duct (4) into the rotary drum (10) by the suction force by the.

In order to make the temperature distribution of the hot air heated by the gas burner (31) uniform in the openings, various types of air suction holes and openings are formed at predetermined locations. The combustion chamber (41) is a box extending rearward from the rear surface of the communication chamber (43), and the cross section of the box has a vertically long rectangular corner (opening (40) (40)). The corner part located on the side) has an irregular pentagonal cross section with a certain range cut out, and the inclined surface (41a) of the part corresponding to the cut part is opened.
(40) Facing to the (40) side. When the burner box (32) is attached to the rectangular opening (41b) formed in the lower side wall of this inclined surface (41a), the flame hole of the gas burner (31) faces the combustion chamber (41) and faces horizontally. .. A large number of small holes are formed in the burner box (32) in order to sufficiently supply the secondary air for combustion. In addition, a first opening (61) is formed on the side wall of the end surface of the combustion chamber (41) located near the flame hole of the gas burner (31).
A second opening (62) is formed above the opening (41).
On the side wall between the b) and the communication chamber (43), there are a large number of first holes (63) and (63) near the lower part of the inclined surface (41a), and the wall surface facing this is as shown in FIG. A large number of second hole portions (64), (64) are arranged in each.

Further, the combustion chamber on the back side of the communication chamber (43)
A large number of third hole portions (65) (65) are formed between the discharge chamber portion (42) and the vicinity of the connection portion with the (41). By adopting the air suction method with the above configuration, the hot air due to the combustion of the gas burner (31) tends to rise due to the relationship with the air suction action of the fan device (5), and is concentrated on the upper opening (40) side. The hot air that tends to be cooled is air-cooled by the suction air from the second opening (62), the first hole portion (63), the second hole portion (64), and the third hole portion (65), and the hot air rises. The hot air that has been suppressed and has reached the communication chamber (43) is diffused to the lower opening (40) side. As a result,
The temperature distribution of the hot air supplied into the rotary drum (10) from the entire area of the air supply port (30) is made uniform.

The second opening (62) has a combustion chamber on its lower side.
A tongue piece (62a) that is inclined toward the inside of the (41) is formed. Therefore, the air sucked by the suction force of the fan device (5) does not directly act on the combustion flame of the gas burner (31), and the suction stability does not impair the combustion stability. A similar tongue piece (61a) is also formed in the first opening (61) on the side adjacent to the combustion portion of the gas burner. Therefore, the suction air from this opening is also supplied into the combustion chamber along the opposite side wall of the combustion section, and the suction air does not adversely affect the combustion flame. Further, the flow of the suctioned air suppresses the tendency of the combustion exhaust gas to flow to the upper side of the discharge chamber portion (42), thereby making the discharge temperature distribution of the hot air from the air supply port (30) more uniform. It

Further, in this embodiment, the rotary drum (10)
The rotation direction of the air supply port (30) is set clockwise when viewed from the front. Under this condition, the opening range of the air supply port (30) is, as shown in FIG. It is set in the range from the right of the center of (10) to just below), and the opening area (30
The opening range of each of a) and (30b) is set in an arcuate section having an included angle of about 35 degrees. Therefore, the included angle of the non-opening portion sandwiched between these sections is about 20 degrees.

When the material to be dried (M) is small, the material to be dried (M) reaches the apex of the locus of rotation of the chevron portion (17) by the rotation of the rotary drum (10), and then the downward movement is continued. However, even in the case of such movement of the material to be dried (M), hot air from the opening area (30a) is effectively supplied to this falling area. On the other hand, when the amount of the material to be dried (M) is large, the material to be dried (M) is circularly rotated while being in contact with the inner surface of the body of the rotary drum (10). When the dried matter (M) moves, it is once heated by hot air in the opening area (30b) and then reheated in the opening area (30a).

[Drying Completion Judging Device] In this embodiment, in order to judge the drying completion time, the clothes temperature sensor (S ₁ ) for detecting the clothes temperature in the rotary drum (10) and the exhaust duct (51) are used. It is equipped with an exhaust temperature sensor (S ₂ ) that detects the exhaust temperature of the, and an outside air temperature sensor (S ₃ ) that detects the outside air temperature.The clothing temperature sensor (S ₁ ) is attached to the support ring (3). On the inside (eg 3
It is arranged so as to be exposed and contact the object to be dried (M). Further, the exhaust temperature sensor (S ₂ ) is the exhaust duct (51)
The outside air temperature sensor (S ₃ ) installed on the exhaust stack of the
In the air suction path to the air supply duct (4) at a position distant from the (31), for example, as shown in FIG. 2, on a bracket provided near the first opening (61) on the inner wall of the casing (1). Fixed.

In order to determine the end of drying by using the output from each of the above-mentioned sensors, a microcomputer is used in this embodiment, which is configured to execute a program based on the flowchart shown in FIG. ing. In addition, the gas burner (31) outputs a heating power of 8 by a predetermined signal input.
It is possible to adjust in stages, and in this embodiment, the maximum thermal power is 8th thermal power to 4th weaker 4th level than this maximum thermal power.
The structure is such that the heat power is gradually weakened within the range up to the heat power. Then, every time the temperature inside the rotary drum (10) drops to a predetermined temperature after the start of drying, the heating power is set to the eighth to fourth heating power.
It is designed to gradually reduce the heat power. The third
The thermal power to the first thermal power are used when drying lingerie and the like.

With respect to the control in this case, the actual dry determination will be described below with reference to the flowchart. When the drying is started, the heating power of the gas burner (31) is set to the eighth heating power, and the drying process proceeds in this state. And
In step (71), the temperature detected by the clothing temperature sensor (S ₁ ) is the first
Whether the set temperature (74 ° C) or the temperature detected by the exhaust temperature sensor (S ₂ ) reaches the second set temperature (68 ° C) is monitored, and if the temperature has risen to the above temperature, the gas burner (31)
Firepower is weakened from 8th to 7th power.

[0025] Then, with this heat power, hot air is generated on the rotating drum (1
0) is fed into the clothing temperature sensor (S ₁ ) in step (72).
Whether the temperature detected by the 3rd set temperature (76 ℃) or the temperature detected by the exhaust temperature sensor (S ₂ ) becomes the 4th set temperature (73 ℃) is constantly monitored, and the clothing temperature sensor (S ₁ ) Or exhaust temperature sensor (S
_When any one of ₂ ) reaches the corresponding set temperature, the heat power of the gas burner (31) is weakened from the seventh heat power to the sixth heat power. Then, _{every time the} clothing temperature sensor (S ₁ ) reaches the third set temperature or the temperature detected by the exhaust temperature sensor (S ₂ ) reaches the fourth set temperature, the heating power of the gas burner (31) is weakened by one step.

Finally, when the heating power of the gas burner (31) is set to the fourth heating power, in step (73),
The reference value is set based on the output of the outside air temperature sensor (S ₃ ).
This reference value is obtained by dividing the outside air temperature range from below 0 ° C to above 20 ° C into 6 levels, and setting the reference value for each outside air temperature range as shown in the figure. Outside temperature range of the table and detected temperature of outside temperature sensor (S ₃ )
Compare with (T), select the corresponding reference value, and use it as the set reference value (T ₀ ).

Thereafter, in step (74), it is monitored whether or not a predetermined time has elapsed, and when the predetermined time has elapsed, in step (75), the temperature detected by the exhaust temperature sensor (S ₂ ) and the above When the temperature detected by the exhaust gas temperature sensor (S ₂ ) reaches the set reference value (T ₀ ) as a result of comparison with the set reference value (T ₀ ), it is determined that the drying is complete, and the combustion of the gas burner (31) is stopped. To be done. After that, the fan device (5) is stopped when a certain time has elapsed.

In the above embodiment, "outside temperature-reference value"
Table outside temperature range is from "20 ℃ or higher" to "0 ℃
Although the temperature range of "less than" is divided into 6 ranges at intervals of 5 ° C, this range can be set arbitrarily.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a sectional view taken along line XX.

[Figure 3] Exploded view of main parts

FIG. 4 is an exploded perspective view of the air supply duct (4).

FIG. 5 is a perspective view of the combustion chamber from another direction.

FIG. 6 is a perspective view of a gas burner (31) and a gas circuit section for the gas burner (31).

FIG. 7 is a flowchart of the drying end determination device.

[Explanation of symbols]

 (4) ・ ・ ・ Air supply duct (42) ・ ・ ・ Discharge chamber (43) ・ ・ ・ Communication chamber (41) ・ ・ ・ Combustion chamber (31) ・ ・ ・ Gas burner

[Procedure amendment]

[Submission date] May 15, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 7

[Correction method] Change

[Correction content]

[Figure 7]

Front page continuation (72) Inventor Yuji Goto, 2-26, Fukuzumi-cho, Nakagawa-ku, Nagoya City, Rinnai Co., Ltd. (72) Inventor, Yasushi Yamaoka 2-26, Fukuzumi-cho, Nakagawa-ku, Nagoya City, Rinnai Co., Ltd. (72) Invention Person Yoshimi Tsujimoto, Rinnai Co., Ltd. 2-26 Fukuzumi-cho, Nakagawa-ku, Nagoya-shi

Claims (1)

[Claims] 1. An air supply port for supplying hot air is provided in a range from a lower portion to a lateral portion of a support ring which is fitted to a front end portion of a rotary drum which accommodates an object to be dried and which rotatably supports the rotary drum. A moist air inside the rotary drum is provided by a fan device that is provided with a discharge chamber portion that matches the air supply port and a combustion chamber that communicates therewith and that is connected to the support ring and that communicates with the inside of the rotary drum. In the clothes dryer in which the hot air in the combustion chamber is sucked into the rotating drum, the air supply duct (4) has the discharge chamber section (42) and the downstream end is opened in the entire area. A substantially fan-shaped flat communication chamber (43) which is continuously provided at a right angle downward with respect to the hot air discharge direction from the discharge chamber section.
And a rectangular parallelepiped combustion chamber (41) connected to the rear from the lower part of the communication chamber (43), the combustion part of the gas burner (31) is exposed to the lower part of the side wall of the combustion chamber (41), Drying clothes in which an air suction opening is formed in the upper part of the rear end surface of the combustion chamber and between the combustion part and the communication chamber in the upper part of the combustion chamber (41) or in the upper part of the middle of the communication chamber (43). Machine.