JP2008104492A - Clothes dryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a clothes dryer capable of securing high safety by accurately sensing abnormal reduction in the quantity of air when the dispersion in the quantity of air passing through a drying chamber is large owing to the difference in the setting conditions. <P>SOLUTION: An adjustment plate 355 is attached on the outer side of an opening 132 provided at a partition wall 13 of a drying chamber in such a way as slidable in the vertical direction, so that the opening area of a communicating opening 357 for letting the inside/outside of the drying chamber communicate according to the position of the adjustment plate 355. An operation plate 353, movable around a horizontal shaft 352a of a hinge 352, is attached to the outer side of the communication opening 357. When a door of the drying chamber is closed and the inside of the drying chamber is negative pressure in the normal blowing operation, the operation plate 352 is turned by the differential pressure, and a switch 354 is operated accordingly. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a drum-type clothes dryer for drying washed clothes.

  In recent years, coin laundry stores equipped with coin-type washing machines and clothes dryers have been widely used in various places. These so-called coin-type clothes dryers are installed in a place where an unspecified number of people can go in and out unlike ordinary household clothes dryers. Higher safety is required.

  In such a clothes dryer, for example, as described in Patent Document 1, warm air heated by a heating source such as a gas burner is sent into a drying chamber in which a drum is installed, and then comes out of wet clothes housed in the drum. The structure which discharges | emits the air containing water vapor | steam outside the apparatus is taken. The air flow in the ventilation path including the drying chamber is generated by a fan that is rotationally driven at a predetermined rotational speed, and the air volume depends on the flow path resistance of the ventilation path. Therefore, if the lint filter installed in the ventilation path is clogged with a large amount of lint from the clothes, or if small clothes fall into the drying chamber and block part of the ventilation path, Increases and air volume decreases. In such a case, heat exchange at the heating source is not performed properly, and the temperature may rise too much, causing a safety problem or causing a failure of the device. In order to prevent this, it is desirable to detect that a certain amount of air flow is generated in the drying chamber.

  In the meantime, the applicant of the present application, in Japanese Patent Application No. 2006-65082 (filed on Mar. 10, 2006), is provided with an air volume detecting means for detecting the air volume passing through the drying chamber, and the air volume decreases when the door is opened. Thus, a clothes dryer has been proposed in which the opening / closing of the door is detected by utilizing the phenomenon that the drying chamber does not become negative pressure and the rotation of the drum is stopped when the door is opened. According to this, even when the door switch cannot accurately detect the open / closed state of the door due to a malfunction or mischief of the door switch, the operation can be reliably stopped when the door is open or half open. it can. The air volume detection means proposed here can also be used for the purpose of preventing overheating as described above.

  However, the flow path resistance of the ventilation path in the clothes dryer varies depending on the installation conditions of the clothes dryer. That is, in the installation conditions such as a long exhaust duct used when the clothes dryer is installed, a small cross-sectional area, a large number of bent portions, or a narrow gap between the intake port for sucking outside air and the wall surface, Originally the flow resistance of the ventilation path is large and the air volume is constantly small. Therefore, in a clothes dryer used under such conditions, in order to prevent overheating associated with a decrease in the air volume, it is necessary to set a lower threshold for detection by the air volume detecting means. However, in such a case, in a clothes dryer that is originally used under a condition where there is a large amount of air in the ventilation path, there is a risk that it will be overlooked even if the air volume is reduced due to clogging of the lint filter.

  A similar problem occurs when determining the open / closed state of the door according to the detection result of the air volume detection means, and the door is closed despite the door being half open depending on the installation conditions of the clothes dryer. May be erroneously detected to start driving, or conversely, although the door is closed, it may be erroneously detected that the door is open and the driving cannot be performed.

Japanese Patent Laid-Open No. 6-225995

  The present invention has been made to solve the above-described problem, and can accurately detect an abnormal decrease in air flow even when there is a large variation in air flow through the drying chamber due to differences in installation conditions and the like. Therefore, it is providing the clothes dryer which can ensure high safety | security.

In order to solve the above-described problems, a first invention is a drying chamber that is opened and closed by a door, a drum that is rotatably disposed in the drying chamber and contains clothes to be dried therein, and the drum is rotated. Rotation driving means for driving, air blowing means for supplying outside air into the drying chamber and exhausting moisture containing moisture from the drying chamber to the outside of the machine, and air supplied into the drying chamber by the blowing means In a clothes dryer comprising a heating means for heating, as an air volume detection means for detecting the air volume of the air flow passing through the drying chamber by the operation of the air blowing means,
A communication opening for communicating the inside and the outside of the drying chamber;
An open / close lid attached to open the communication opening when the drying chamber is at atmospheric pressure and to close the communication opening by the differential pressure when the drying chamber is negative pressure;
A detection unit for detecting an opening / closing operation of the opening / closing lid,
An adjustment mechanism for adjusting the opening area of the communication opening;
It is characterized by having.

  As an aspect of the clothes dryer according to the first aspect of the present invention, the adjustment mechanism is configured to move a mounting position of a shielding portion that shields a part of an opening formed in the wall surface of the drying chamber. Is preferred.

  By adjusting the opening area of the communication opening, it is possible to change the threshold value of the air volume (or air pressure) in the drying chamber when the opening / closing lid is closed. That is, when the opening area is increased, the force acting on the opening / closing lid portion is increased even when the differential pressure is the same, so that the communication opening portion is closed with a smaller air volume. The amount of airflow generated in the drying chamber when the air blower is operated depends on the installation conditions (exhaust duct length, cross-sectional area, etc.) and operating conditions (supply gas pressure and type of combustion gas used in the heating means) However, according to the clothes dryer according to the first invention, for example, the installation operator adjusts the opening area of the communication opening by using the adjusting mechanism, so that the normal operation as described above is performed. It is possible to adjust so that the air volume detecting means operates properly without the influence of the variation of the air volume at the time.

Further, as in the case of the first invention, the second invention made to solve the above-mentioned problems is a drying chamber that is opened and closed by a door, and is rotatably disposed in the drying chamber and accommodates clothes to be dried therein. A drum, rotation driving means for rotationally driving the drum, air blowing means for supplying outside air into the drying chamber and exhausting air containing moisture from the drying chamber to the outside of the machine, and the drying by the blowing means In a clothes dryer comprising a heating means for heating the air supplied to the room, as an air volume detection means for detecting the air volume of the air flow passing through the drying chamber by the operation of the air blowing means,
A communication opening for communicating the inside and the outside of the drying chamber;
Fixed to the wall of the drying chamber so that the communication opening is opened when the drying chamber is at atmospheric pressure, and the communication opening is closed by the differential pressure when the drying chamber is at a negative pressure. An opening / closing lid part that is attached to be pivotable about a supported spindle,
A detection unit for detecting an opening / closing operation of the opening / closing lid,
An adjustment mechanism for adjusting the mounting position of the spindle to the opening / closing lid, or the fixing position of the spindle with respect to the drying chamber wall surface;
It is characterized by having.

  When the mounting position of the spindle to the opening / closing lid and the fixing position of the spindle with respect to the drying chamber wall surface are changed, the distance between the fulcrum and the force point or the distance between the fulcrum and the action point changes in the lever principle. As a result, since the magnitude of the force applied to the opening / closing lid required to close the communication opening can be changed, the air volume detecting means eliminates the influence of the air volume variation during normal operation as in the first invention. Can be adjusted to work properly.

Further, as in the first and second inventions, the third invention, which is made to solve the above-mentioned problems, is a drying chamber that is opened and closed by a door, and a clothing that is rotatably disposed in the drying chamber and is to be dried. , A rotation driving means for rotationally driving the drum, a blowing means for supplying outside air into the drying chamber and for discharging air containing moisture from the drying chamber to the outside of the machine, and the blowing means In the clothes dryer comprising the heating means for heating the air supplied into the drying chamber, the air volume detecting means for detecting the air volume of the air flow passing through the drying chamber by the operation of the blowing means,
A communication opening for communicating the inside and the outside of the drying chamber;
Fixed to the wall of the drying chamber so that the communication opening is opened when the drying chamber is at atmospheric pressure, and the communication opening is closed by the differential pressure when the drying chamber is at a negative pressure. An opening / closing lid part that is attached to be pivotable about a supported spindle,
A detection unit for detecting an opening / closing operation of the opening / closing lid,
An adjustment mechanism for adjusting the weight of the opening / closing lid,
It is characterized by having.

  For example, if one or a plurality of weights of appropriate weights can be added to the opening / closing lid portion, the weight of the weights and the number of weights can be changed to change the opening / closing lid portion required for closing the communication opening portion. You can change the magnitude of the force. As a result, as in the first and second inventions, it is possible to adjust the air volume detecting means to operate appropriately without the influence of the variation in the air volume during normal operation.

  The clothes dryer according to the first to third inventions further includes a control unit that stops heating by the heating unit when the air volume detecting unit detects that the air volume has decreased during the drying operation. Is preferred. According to this configuration, for example, heating is stopped when the air flow suddenly decreases due to an increase in flow path resistance due to, for example, severe filter clogging during operation, thereby preventing an abnormal temperature rise of the heating means. And high safety can be ensured.

  In the clothes dryer according to the first to third inventions, when the air volume detecting means detects that the air volume has decreased after the start of driving the air blowing means, the rotation driving means is used to stop the rotation of the drum. It is preferable to further comprise control means for controlling.

  In this configuration, for example, when the door is in a half-open state and air can enter and exit from the gap between the doors, the drying chamber does not become negative even if the air blowing means operates. Then, since the decrease in the air volume is detected by the air volume detection means, the control means stops the rotation of the drum. Thereby, the rotation of the drum in the door open state is avoided, and high safety can be ensured.

  According to the clothes dryer which concerns on 1st thru | or 3rd invention, even when installation conditions, use conditions, etc. differ, the air volume of the drying chamber at the time of operating a ventilation means by simple adjustment work is sufficient. It is possible to adjust so as to absorb the variation and reliably detect whether there is a normal air volume. This makes it possible to reliably detect a decrease in the air volume.For example, if the lint filter is severely clogged during the drying operation or the ventilation path is blocked by clothing, the heating is stopped quickly and the heating is stopped. An abnormal temperature rise in the means and the drying chamber can be prevented. It is also possible to perform appropriate control for safety, such as reliably detecting that the door is open from the decrease in the air volume and stopping the drum rotation.

  An embodiment of a clothes dryer according to the present invention will be described with reference to the drawings. The clothes dryer according to the present embodiment is a two-stage clothes dryer in which clothes dryers having the same structure are stacked in two upper and lower stages in order to effectively use the installation space. Of course, the present invention can also be applied.

  FIG. 1 is a front plan view of the clothes dryer of this embodiment. In this clothes dryer, an upper clothes dryer 1 is arranged on a lower clothes dryer 2, and the housings 3 of both are integrated. Both clothes dryers 1 and 2 have large circular clothing input ports on the front surface of the housing 3, and each clothing input port can be opened and closed by a laterally opening type circular doors 4 and 5.

  Circuit boards equipped with control circuits and the like for independently controlling the operations of the upper and lower clothes dryers 1 and 2 are intensively disposed between the upper door 4 and the lower door 5. On the right edge, an operation panel is provided separately for upper and lower stages. The operation panel includes a start key 71 for instructing operation start (resumption of operation) as the operation unit 7, a time setting unit 72 for setting a drying operation time, and a temperature setting for setting an ultimate temperature during the drying operation. A unit 73 is provided, and a display unit 8 for displaying such set values and the remaining time during operation is arranged.

  The internal configuration of the upper garment dryer 1 and the lower garment dryer 2 is basically the same. FIG. 2 is a schematic longitudinal sectional view showing an internal configuration of a main part of the upper clothing dryer 1.

  A drying chamber 10 that is substantially sealed by a door 4 is formed inside the housing 3, and a drum 11 having a cylindrical surface and a large number of ventilation holes 11 a is formed in the drying chamber 10 in a substantially horizontal manner. The main shaft 12 is rotatably set. The main shaft 12 is supported by a bearing 14 fixed to the partition wall 13 on the back surface of the drying chamber 10, and a large-diameter main pulley 15 is attached to the rear end of the main shaft 12 protruding rearward of the partition wall 13. . A drum motor 16 is installed on the back of the drying chamber 10, and the rotational driving force of the drum motor 16 is transmitted to the main pulley 15 via the motor pulley 17 and the timing belt 18, whereby the drum 11 rotates at a relatively low speed. Driven.

  An intake passage 21 is formed between the intake wall 20 and the intake port 20 opened on the back surface of the housing 3 in the upper part of the partition wall 13 on the back surface of the drying chamber 10. Gas (city gas or LP gas) is burned in the intake passage 21. Is provided with a heating section 22 (corresponding to the heating means in the present invention) for heating air. Further, a drum inlet temperature sensor 23 for detecting the temperature of the hot air supplied into the drying chamber 10 is disposed between the heating unit 22 and the drying chamber 10 in the intake passage 21. The drying chamber 10 communicates with the ventilation chamber 26 through a vent 25 formed at the bottom thereof, and further communicates with an exhaust passage 28 connected to an exhaust port 29 opened at the back of the housing 3 through a lint filter 27. Yes. A fan 31 that is rotationally driven by a fan motor 30 as a blowing means in the present invention is provided in the exhaust passage 28, and when the fan 31 is activated, outside air is sucked from the intake port 20 and supplied into the drying chamber 10. The air that has passed through the drying chamber 10 is discharged from the exhaust port 29 to the outside through the ventilation chamber 26 and the exhaust passage 28. A drum outlet temperature sensor 32 for detecting the temperature of air (exhaust gas) discharged from the drying chamber 10 is disposed in the exhaust passage 28.

  If the heating unit 22 operates (gas combustion is performed) in a state where the air flow is generated, high-temperature air heated by the heating unit 22 is supplied into the drying chamber 10. As indicated by arrows in FIG. 2, the hot air passes through the drum 11 in the drying chamber 10, and heat exchange is performed between the wet clothing housed in the drum 11 and the hot air. And the clothes are dried. Moist air containing water vapor from the clothes passes into the ventilation chamber 26, and foreign matters such as lint from the clothes when passing through the lint filter 27 are removed and finally discharged from the exhaust port 29 to the outside of the machine. The

  In order to detect a decrease in the air volume of the airflow passing through the drying chamber 10 as described above, the partition wall 13 is provided with an air pressure detecting unit (corresponding to an air volume detecting means in the present invention) 35. In short, the wind pressure detection unit 35 has a communication opening 357 provided in the partition wall 13 that communicates the inside of the drying chamber 10 and the outside (however, inside the housing 3). Corresponding) It has a structure that is opened and closed by 353, and the operation of the operating plate 353 is detected by a microswitch (corresponding to a detecting section in the present invention) called a wind pressure switch 354.

  FIG. 3 is a block diagram of the control system of the clothes dryer 1 of the present embodiment. The control unit 40 placed at the center of control is configured with a CPU at the center, and an instruction signal corresponding to each operation from the start key 71, the time setting unit 72, and the temperature setting unit 73 provided in the operation unit 7 is displayed on the door. A door opening / closing detection signal is input from the door switch 33 that detects opening / closing of 4 (or 5), a temperature detection signal is input from the drum inlet temperature sensor 23 and the drum outlet temperature sensor 32, and an air volume detection signal is input from the wind pressure switch 354. Then, the control unit 40 sends a display control signal such as the remaining operation time to the display unit 8. The control unit 40 controls the rotation of the drum motor 16 via the drum motor drive unit 41, controls the rotation of the fan motor 30 via the fan motor drive unit 42, and further heats the heating unit 22 via the heating drive unit 43. The igniter 221 for igniting the gas burner is driven while controlling the opening degree of the gas valve 222 for supplying gas to the gas burner. The control unit 40 is common to the upper garment dryer 1 and the lower garment dryer 2, and the other components are provided separately for the upper and lower stages.

  Next, the structure and operation of the wind pressure detector 35, which is a feature of the clothes dryer of this embodiment, will be described in detail with reference to FIGS. 6 and 7 are a longitudinal sectional view (a) and a rear plan view (b) showing the detailed structure of the wind pressure detection unit 35. FIG.

  The partition wall 13 is formed with a recess 131 recessed toward the drying chamber 10, and a rectangular opening 132 having a height H1 and a width W is formed near the center of the recess 131. As a separate member of the recess 131, a flat rectangular adjustment plate 355 in which an opening 355a having a height H2 and a width W is formed in the vicinity of the center is formed by a partition wall 13 (recess 131) with two screws 356 on the left and right. Is attached. In order to insert the screw 356, the partition wall 13 has a vertically long screw hole 133. When the screw 356 is loosened, the adjustment plate 355 can be slid up and down along the screw hole 133. It has become.

  6 shows a state in which the adjustment plate 355 is raised most in the movable range, and FIG. 7 shows a state in which the adjustment plate 355 is lowered most. Thus, when the adjustment plate 355 is moved up and down, the opening 132 of the partition wall 13 The degree of overlap in the front-rear direction with the opening 355a of the adjustment plate 355 changes, and the overlapped portion becomes a communication opening 357 having a height H. The opening area H × W of the communication opening 357 is the minimum Amin in the state of FIG. 6, and is the maximum Amax in the state of FIG. Depending on the position of the adjustment plate 355, the opening area H × W of the communication opening 357 can be arbitrarily adjusted between Amin and Amax.

  A mounting bracket 351 is fixed on the recess 131 on the back side of the partition wall 13, and an operating plate 353 that can be swung about a horizontal shaft 352 a that is a support shaft is suspended at the lower end of the mounting bracket 351 via a hinge 352. It is installed. In a state where the suction force due to the differential pressure is not applied to the working plate 353, that is, in a state where the inside of the drying chamber 10 is almost at atmospheric pressure, the lower edge of the working plate 353 as shown in FIGS. 6 (a) and 7 (a). The end is stopped at a position slightly inclined rearward (rightward in the drawing) from below the vertical direction, whereby a gap is formed between the back surface of the adjustment plate 355 and the front surface of the operation plate 353, and the communication opening 357. Is substantially open. A wind pressure switch 354, which is a micro switch, is fixed to the upper end of the mounting bracket 351. In the state shown in FIGS. 6A and 7A, the upper end of the operation plate 353 is connected to the contact piece 354a of the wind pressure switch 354. The wind pressure switch 354 is not turned on and is in an off state.

  When the fan 31 operates and the air flow as described above is formed while the door 4 is completely closed, the inside of the drying chamber 10 is in a negative pressure state that is slightly lower than the atmospheric pressure. The larger the air volume, the lower the air pressure in the drying chamber 10. When the inside of the drying chamber 10 becomes negative pressure, the working plate 353 is sucked so as to close the communication opening 357 due to the differential pressure before and after the inside of the working plate 353 (inside and outside of the drying chamber 10) (indicated by a dotted line in FIG. 2). Status). Since the operation plate 353 swings about the horizontal axis 352a, when the operation plate 353 is sucked and closes the communication opening 357, the upper end of the operation plate 353 is retracted to push the contact piece 354a of the wind pressure switch 354, and the wind pressure switch 354 turns on.

  The wind pressure switch 354 is turned on when the door 4 is completely closed and normal drying operation can be performed. Otherwise, for example, the operation is started while the door 4 is half open, or some obstacle If the intake port 20 or the exhaust port 29 is blocked and a sufficient air volume cannot be generated, or the lint filter 27 is abnormally clogged and cannot generate a sufficient air volume. It is desirable to be in the off state. However, since the air volume in the drying chamber 10 during normal drying operation varies depending on the installation conditions and use conditions as described above, the operation is not performed unless the wind pressure switch 354 is switched on and off accordingly. In spite of being able to perform normally, the wind pressure switch 354 may remain off and may be erroneously detected as abnormal.

  Therefore, when installing the clothes dryer, the installation operator adjusts the opening area of the communication opening 357 by appropriately changing the position of the adjustment plate 355 according to the installation conditions and use conditions. When the adjustment plate 355 is lowered to increase the opening area of the communication opening 357, the suction force acting on the operation plate 353 is relatively increased even with the same air volume, so that the operation plate 353 can be opened with a smaller air volume. 357 is closed and the wind pressure switch 354 is turned on. On the contrary, if the adjustment plate 355 is raised to reduce the opening area of the communication opening 357, the suction force acting on the operation plate 353 is relatively reduced even with the same air flow, so that it operates only when a larger air flow occurs. The plate 353 closes the communication opening 357 and the wind pressure switch 354 is turned on. In this way, by simply shifting the adjustment plate 355 up and down, it is possible to realize an accurate operation of the wind pressure switch 354 corresponding to the variation in the air volume during normal operation.

  As described above, the adjustment plate 355 can be easily moved up and down simply by loosening the screw 356, so that it does not require much labor and time.

  In the above-described embodiment, the threshold of the air volume at which the wind pressure switch 354 is turned on / off can be changed by changing the position of the adjustment plate 355. However, the opening area of the communication opening 357 that communicates the inside and outside of the drying chamber 10 is set. Any adjustment mechanism may be used as long as it can be changed.

  Next, an example of the drying operation control using the detection signal of the wind pressure switch 354 will be described with reference to the flowcharts of FIGS. FIG. 4 is a control flowchart when the drying operation is performed, and FIG. 5 is a control flowchart during standby when the drying operation is not performed.

  When the drying operation is started in accordance with the user's operation of the start key 71, the control unit 40 first operates the fan motor 30 through the fan motor driving unit 42, and then the drum motor through the drum motor driving unit 41. 16 is operated (step S1). As a result, the fan 31 rotates, and the air sucked from the intake port 20 as described above is discharged to the outside of the apparatus again through the intake passage 21, the drying chamber 10, the ventilation chamber 24, and the exhaust passage 28. The drum 11 in which the clothes are stored rotates at a predetermined rotational speed. After the operation of the fan motor 30 and the drum motor 16, the control unit 40 determines whether or not the wind pressure switch 354 is turned on (step S2).

  As described above, when the door 4 is appropriately closed and the air volume is sufficiently secured, the inside of the drying chamber 10 becomes negative pressure and the wind pressure switch 354 is turned on. On the other hand, for example, when the door 4 is half-opened, outside air enters the drying chamber 10 through the gap, so that the interior of the drying chamber 10 does not become negative even if the fan 31 is operated. Accordingly, the wind pressure switch 354 remains off. Further, even when a sufficient air volume is not generated due to, for example, severe clogging of the lint filter 27, the wind pressure switch 354 remains off. Therefore, if it is determined in step S2 that the wind pressure switch 354 is turned on, it is determined that there is no problem, and after performing a cold air operation for a predetermined time (step S3), the gas valve 222 is opened and ignition is performed by the igniter 221 (step S3). S4). Thereby, the air supplied in the drying chamber 10 is heated, and a substantial drying operation is started.

  Thereafter, the control unit 40 determines whether or not a predetermined operation time has elapsed (step S5), and monitors whether or not the wind pressure switch 354 is on until the predetermined operation time has elapsed (step S6). If the operation time has passed without any problem (Yes in step S5), the gas valve 222 is closed to extinguish the fire, and the fan motor 30 and the drum motor 16 are stopped (step S7) to finish the drying operation. To do.

  On the other hand, when it is determined in steps S2 and S6 that the wind pressure switch 354 is off, first, if the gas valve 222 is open, the gas burner is extinguished to extinguish the gas burner (step S8). Whether or not (step S9). If the wind pressure switch 354 is continuously off for a predetermined time while performing cold air operation, both the drum motor 16 and the fan motor 30 are turned off to stop the operation (step S10), and a trouble error occurs. Is notified (step S11). As a notification of a trouble error, for example, a predetermined error is displayed and a buzzer is sounded for a specified time.

  According to the above control, heating by the gas burner is not performed when the air volume is abnormally low at the start of the drying operation or during the drying operation, and if the state continues, the operation is stopped and an error is notified, so that it is high. Safety can be ensured.

  Even in the standby state where the drying operation is not executed, the control unit 40 determines whether or not the wind pressure switch 354 is off (step S20). In this case, since the fan 31 is not operating and the wind pressure switch 354 is supposed to be turned off, if it is turned on, the operating plate 353 is stretched on the adjusting plate 355 by an adsorbing force such as water. It is possible that the wind pressure switch 354 is not turned off, the on / off switching setting (adjustment as described above) of the wind pressure switch 354 is not appropriate, or that the switch itself has a failure or disconnection. Therefore, when the wind pressure switch 354 is on for a predetermined time (Yes in step S21), it is recognized as abnormal and a trouble error is notified (step S22). Thereby, it is possible to recognize that the abnormal operation of the wind pressure switch 354 and the setting of the on / off air volume threshold value are not appropriate.

  Next, the configuration of the wind pressure detection unit 35 in a form different from the above embodiment will be described with reference to FIGS. 8 and 9 are longitudinal sectional views similar to FIG. 6A, and the same components are denoted by the same reference numerals and description thereof is omitted. In these configurations, the recess 131 is not provided in the partition wall 13, and the opening 132 formed in the partition wall 13 functions as a communication opening as it is. In the example of FIG. 8, the attachment position of the hinge 352 with respect to the operating plate 353 can be moved up and down, and when the hinge 352 is shifted upward as shown in FIG. 8B, the horizontal shaft 352a that is the support shaft is removed. The distance to the part which closes the opening part 132 in the action | operation board 353 becomes long. As a result, the force required for the operating plate 353 to close the opening 132 changes, and the same adjustment as in the above embodiment is possible.

  On the other hand, in the example of FIG. 9, an L-shaped member 358 for attaching a weight is attached to the operation plate 353, and as shown in FIG. 9B, a necessary number of flat plate-like weights are placed on the L-shaped member 358. By attaching the weight 359, the weight of the operation plate 353 can be changed. As a result, the ease of movement of the operating plate 353 with respect to the same differential pressure is changed, so that the threshold value of the air volume at which the wind pressure switch 354 is turned on / off can be changed.

  It should be noted that the above embodiment is merely an example, and it is obvious that any modification, correction, or addition as appropriate within the scope of the present invention is included in the scope of the claims of the present application.

The front plan view of the clothes dryer of one example of the present invention. The schematic longitudinal cross-sectional view which shows the internal structure of the principal part of an upper stage clothes dryer. The block block diagram of the control system of the clothes dryer of a present Example. The flowchart which shows an example of the control at the time of drying operation using the detection signal of a wind pressure switch. The flowchart which shows an example of the control in standby using the detection signal of a wind pressure switch. The longitudinal cross-sectional view (a) and back plan view (b) which show the detailed structure of the wind pressure detection part in the clothes dryer of a present Example. The longitudinal cross-sectional view (a) and back plan view (b) which show the detailed structure of the wind pressure detection part in the clothes dryer of a present Example. The longitudinal cross-sectional view which shows the detailed structure of the wind pressure detection part by another form. The longitudinal cross-sectional view which shows the detailed structure of the wind pressure detection part by another form.

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 ... Housing 4 ... Door 10 ... Drying chamber 11 ... Drum 11a ... Vent 12 ... Main shaft 13 ... Partition wall 131 ... Recess 132 ... Opening 133 ... Screw hole 14 ... Bearing 15 ... Main pulley 16 ... Drum motor 17 ... Motor pulley 18. Timing belt 20 ... Intake port 21 ... Intake passage 22 ... Heating unit 24 ... Ventilation chamber 25 ... Ventilation port 26 ... Ventilation chamber 27 ... Lint filter 28 ... Exhaust passage 29 ... Exhaust port 30 ... Fan motor 31 ... Fan 33 ... Door Switch 35 ... Wind pressure detector 351 ... Mounting bracket 352 ... Hinge 352a ... Horizontal shaft 353 ... Operating plate 354 ... Wind pressure switch (micro switch)
354a ... contact piece 355 ... adjustment plate 355a ... opening 356 ... screw 357 ... communication opening 358 ... L-shaped member 359 ... weight 40 ... control part 41 ... drum motor drive part 42 ... fan motor drive part 43 ... heating drive part

Claims (6)

A drying chamber that is opened and closed by a door, a drum that is rotatably disposed in the drying chamber and that stores clothes to be dried therein, a rotational drive unit that rotationally drives the drum, and external air is supplied into the drying chamber. In addition, a clothes dryer comprising: a blowing means for discharging air containing moisture from the drying chamber to the outside of the machine; and a heating means for heating the air supplied into the drying chamber by the blowing means. As an air volume detecting means for detecting the air volume of the air flow passing through the drying chamber by the operation of the air blowing means,
A communication opening for communicating the inside and the outside of the drying chamber;
An open / close lid attached to open the communication opening when the drying chamber is at atmospheric pressure and to close the communication opening by the differential pressure when the drying chamber is negative pressure;
A detection unit for detecting an opening / closing operation of the opening / closing lid,
An adjustment mechanism for adjusting the opening area of the communication opening;
A clothes dryer comprising:   The clothes dryer according to claim 1, wherein the adjustment mechanism moves a mounting position of a shielding portion that shields a part of an opening formed on a wall surface of the drying chamber. A drying chamber that is opened and closed by a door, a drum that is rotatably disposed in the drying chamber and that stores clothes to be dried therein, a rotational drive unit that rotationally drives the drum, and external air is supplied into the drying chamber. In addition, a clothes dryer comprising: a blowing means for discharging air containing moisture from the drying chamber to the outside of the machine; and a heating means for heating the air supplied into the drying chamber by the blowing means. As an air volume detecting means for detecting the air volume of the air flow passing through the drying chamber by the operation of the air blowing means,
A communication opening for communicating the inside and the outside of the drying chamber;
Fixed to the wall of the drying chamber so that the communication opening is opened when the drying chamber is at atmospheric pressure, and the communication opening is closed by the differential pressure when the drying chamber is at a negative pressure. An opening / closing lid part that is attached to be pivotable about a supported spindle,
A detection unit for detecting an opening / closing operation of the opening / closing lid,
An adjustment mechanism for adjusting the mounting position of the spindle to the opening / closing lid, or the fixing position of the spindle with respect to the drying chamber wall surface;
A clothes dryer comprising: A drying chamber that is opened and closed by a door, a drum that is rotatably disposed in the drying chamber and that stores clothes to be dried therein, a rotational drive unit that rotationally drives the drum, and external air is supplied into the drying chamber. In addition, a clothes dryer comprising: a blowing means for discharging air containing moisture from the drying chamber to the outside of the machine; and a heating means for heating the air supplied into the drying chamber by the blowing means. As an air volume detecting means for detecting the air volume of the air flow passing through the drying chamber by the operation of the air blowing means,
A communication opening for communicating the inside and the outside of the drying chamber;
Fixed to the wall of the drying chamber so that the communication opening is opened when the drying chamber is at atmospheric pressure, and the communication opening is closed by the differential pressure when the drying chamber is at a negative pressure. An opening / closing lid part that is attached to be pivotable about a supported spindle,
A detection unit for detecting an opening / closing operation of the opening / closing lid,
An adjustment mechanism for adjusting the weight of the opening / closing lid,
A clothes dryer comprising:   The clothes dryer according to any one of claims 1 to 4, further comprising a control unit that stops heating by the heating unit when the air volume detecting unit detects that the air volume has decreased during a drying operation. .   2. The apparatus according to claim 1, further comprising control means for controlling the rotation driving means so as to stop the rotation of the drum when the air volume detecting means detects that the air volume has decreased after the driving of the air blowing means. The clothes dryer in any one of -4.

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