JPH0425106Y2 - - Google Patents

Description

[Detailed explanation of the idea] (b) Industrial application fields The present invention relates to a dryer.

(b) Conventional technology Dirty sneakers and athletic shoes are often washed, but the sun is used exclusively to dry them. but,
In order to avoid this problem, a shoe dryer disclosed in Japanese Utility Model Application Laid-Open No. 55-8495 has been proposed. This shoe dryer uses an electric heater and a fan, and these electric elements are built into the machine frame. Therefore, if the electric heater is a single type, failure of the heater and fan can be detected during operation based on the heating and air blowing conditions. However, when there are multiple heaters, it is necessary to detect failures in individual heaters based on the degree of heating, but this is difficult, so in reality failures cannot be detected while the heaters are still operating, and in the end, the heating conditions are poor. When I felt it, I took it apart and investigated it.

(c) Problems to be solved by the invention The present invention enables easy detection of failures in each of a plurality of heaters without disassembling them.

(d) Means for solving the problem The present invention is a drying method in which drying air heated by a plurality of heaters is introduced by a fan into a drying chamber containing items to be dried such as clothes and shoes. At the machine,
A start switch for starting normal drying operation, a monitor switch for performing monitor operation, a counter for counting the number of operations of this monitor switch, and comparing the contents of this counter with at least two comparison values A and B. a first monitor operation control unit that operates the heater in a predetermined operation mode and also operates the fan based on a comparison output when the content of the counter matches one of the comparison values A; A second monitor operation control that operates the heater in an operation mode different from the first monitor operation and also operates the fan based on a comparison output when the content of the counter matches the other comparison value B. a normal operation control section that clears the contents of the counter based on the operation of the start switch regardless of the contents of the counter and causes the heater and the fan to operate normally; The apparatus is equipped with display means for displaying different displays during monitor operation and during normal operation.

The start switch is operated via an operation button on the operation section or closed by inserting a coin.

(e) Effect That is, when the number of operations of the monitor switch reaches the first predetermined number, the first monitor operation is executed,
When the next predetermined number of times is reached, the second monitor operation is executed.

This is because the operating modes of the heaters are different between the first monitor operation and the second monitor operation (for example, in the first monitor operation, all the heaters are driven, but in the second monitor operation, one of the heaters is driven). (does not drive), during 1st monitor operation and 2nd monitor operation
By individually detecting the degree of heating during the monitor operation and by comparing the degrees of heating, it is possible to know the failure of each of the plurality of heaters.

Moreover, these monitor operations are canceled when the start switch is operated, and normal drying operation immediately begins.

During the first monitor operation, the second monitor operation, and the normal operation, different displays are displayed on the display means, so that it is possible to identify which operation is currently being performed.

(F) Example To explain based on the drawings, 1 in Fig. 4
is a shoe dryer placed above the shoe washer 2, and is fixed to a stand 3 fixed to the washer 2. Reference numeral 4 denotes an operation box for the shoe washing machine, which has various operation knobs and control devices for shoe washing, and when integrated with the shoe dryer 1, various operation knobs and control devices for shoe drying. will be established.

The shoe dryer 1 includes a drying chamber 6 with a door 5 at the front opening, a fan 7 provided at the rear of the outside lower part of the drying chamber 6, and a fan 7 that blows outside air into the drying chamber 6, and a fan 7 that heats the outside air to turn it into drying air. 3 in the vertical direction consisting of PTC elements
It is equipped with heaters 8, 8, 9.
The front sides of shoes 8 and 9 are covered with a cover 10, and this cover 10 is provided with four cylindrical shoe holders 11 projecting forward. The outside air sucked by the fan 7 passes through the duct 12 to the heater 8,
8 and 9, where it is heated and the small holes 13 located around the holder of the cover 10 and the shoe holder 1 are heated.
Sent from 1... Then, the heated drying air (outside air) heats and dries the shoes S, such as sneakers, hung on the holders 11 from both the inside and outside, and is discharged to the outside from the exhaust port 14 of the drying chamber 6.

Here, the shoe dryer 1 is equipped with a microcomputer (hereinafter referred to as microcomputer) on the front of the machine or the operation box 4.
15, the control circuit diagram of which is shown in FIG. 16 is a start switch that starts normal operation when a predetermined coin is inserted, 17 is an instant return type monitor switch, 18 is a display means capable of two-digit digital display, and 19... are the above-mentioned fan 7 and each heater. 8, 8, 9
It is a driver for triax, etc. Further, FIG. 2 shows a block diagram for controlling various control sections constituted by the microcomputer 15 by the main control section 20 and a control program.

The operation of this embodiment will be explained with reference to the flowchart shown in FIG. Here, regardless of the operation of the monitor switch 17, when the start switch 16 is operated by inserting a coin, the normal drying operation is executed by the normal operation control section 21. In this normal operation, the three heaters 8, 8, 9 and the fan 7 are operated for about 30 to 45 minutes. Prior to this, the monitor switch counter 22, which counts the number of times the monitor switch 17 is operated, is operated.
Clear. Also, even if the monitor switch 17 is operated during this normal operation, the monitor is always monitored.
The clearing operation of the SW counter 22 is being executed. Note that during normal operation, the display means 18 displays the remaining time in minutes by the normal operation control section 21.

The first monitor operation control section 23 and the second monitor operation control section 24 of the microcomputer 15 are monitor SW.
The comparator 25 compares the contents of the counter 22 with "3" or "5" and is activated by the comparison output when they match. First, the counter content is “1”
Then, the display means 18 displays "00" to indicate that preparation for monitor operation is in progress, and when the monitor switch 17 is further operated or 5 seconds have elapsed, the counter content is set to "2" and the display disappears. Then, the monitor switch 17 is operated and the counter content becomes "3".
When this happens, the first monitor operation control section 23 starts the first monitor operation based on the comparison output. That is,
The heaters 8, 8, 9 and the fan 7 are operated, and "01" is displayed on the display means 18, and this is performed for 3 minutes. When this first monitor operation ends, the contents of the counter 22 are counted up to "4".

Next, when the monitor switch 17 is operated and the counter content becomes "5", the second
The monitor operation control unit 24 starts the second monitor operation. That is, the heaters 8, 8 and the fan 7 are operated, and "02" is displayed on the display means 18, and this is performed for 2 minutes. When this second monitor operation ends, the contents of the counter 22 are cleared.

In addition, each time of 5 seconds, 3 minutes, and 2 minutes is microcomputer 1.
It is counted down by the time signal of the timer 26 of 5.

During such first and second monitor operations, a failure of the fan 7 can be detected based on the presence or absence of operation of the fan 7, and a failure of the heaters 8, 8, and 9 can be detected based on the heating state of the first and second monitor operations. can. for example,
If the degree of heating in the first monitor operation and the second monitor operation are the same, it is determined that the heater 9 has failed, and if the degree of heating in the first monitor operation is poor and the degree of heating in the second monitor operation is worse, then the heaters It is obvious that one of the two is faulty. In this embodiment, three heaters are divided into groups of all and two, but if the number of heaters increases, similar failure detection can be performed by dividing them into several groups and monitoring them.

The degree of heating is determined by detecting the temperature inside the drying chamber 6 with an element, and is input into the microcomputer 15, where it is compared with the normal temperature of each monitor operation, and based on the comparison result, the display means 18 indicates whether there is a malfunction. It is also possible to specify individual heaters.

(g) Effects of the invention In the dryer configuration of the invention, even if there are multiple heaters, malfunctions in each heater can be easily detected by performing monitor operation.

[Brief explanation of the drawing]

FIG. 1 is a control circuit diagram of the device of the present invention, FIG. 2 is a block diagram of the control device (microcomputer), FIG. 3 is a flowchart, and FIG. 4 is a side sectional view. 1... Shoe dryer, 6... Drying room, 7... Fan, 8, 9... Heater, 15... Microcomputer, 16
...Start switch, 17...Monitor switch,
18...Display means, 21...Normal operation control section, 2
2...Monitor switch counter, 23...First monitor operation control section, 24...Second monitor operation control section, 25...Comparison section.

Claims (1)

[Scope of utility model registration request] Inside the drying room where items to be dried such as clothes and shoes are stored,
The device introduces drying air heated by a plurality of heaters using a fan, and includes a start switch for starting normal drying operation, a monitor switch for performing monitor operation, and this monitor switch. a counter that counts the number of operations, a comparison unit that compares the contents of this counter with at least two comparison values A and B, and a comparison section that compares the contents of the counter with at least two comparison values A and B; A first monitor operation control section that operates the heater in a predetermined operation mode and also operates the fan, and the content of the counter is a comparison value B of the other side.
a second monitor operation control section that operates the heater in an operation mode different from that in the first monitor operation based on a comparison output when the output matches the first monitor operation, and a second monitor operation control section that operates the fan, regardless of the contents of the counter. a normal operation control section that clears the contents of the counter based on the operation of the start switch and causes the heater and the fan to operate normally;
A dryer comprising display means for displaying different displays during a second monitor operation, a second monitor operation, and a normal operation.