JPS612898A - Clothing drying method and machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a clothes drying method and a clothes dryer, and more particularly to automatic operation and stopping of a clothes dryer that dries clothes with hot air in a rotating drum. The present invention relates to a clothes drying method and a clothes dryer that solve insufficient drying caused by blowing hot air when a small load is applied.

[Background of the invention]

When drying clothes, when the amount of clothes decreases, the amount of hot air blowing through increases and the amount of hot air hitting the clothes decreases, making drying difficult. Since the amount of hot air in the atrium is large, the relative humidity will be low, and it will be determined that the air is dry and will stop.

However, there was a problem that the product was not actually dry.

[Purpose of the invention]

The present invention solves the above-mentioned problems and uses a two-stage determination method to reliably determine a small load even if the type of fabric changes, thereby preventing undrying. The object of the present invention is to provide a method of drying clothes and a clothes dryer for carrying out the method.

[Summary of the invention]

The clothes drying method according to the present invention is a clothes drying method in which hot air flows through the clothes in a rotating drum to dry the clothes, and a change in humidity detected by a humidity detection means provided between the drum outlet air path is converted into an electrical resistance value. If the electrical resistance value exceeds the minimum resistance value among the electrical resistance values set corresponding to the desired degree of dryness of the clothing at a predetermined time after the start of operation, the amount of clothing is determined to be small, and the amount of clothing is determined to be small. If the minimum resistance value is not exceeded within the predetermined time, then measure the time from when the minimum resistance value is reached until the next set resistance value related to dryness is detected, and confirm that the time is within the set time. If so, the amount of clothing is determined to be small, and in both cases, the system continues to operate until the maximum resistance value among the electrical resistance values set above is detected.

Additional information is as follows.

In other words, by solving the above-mentioned problems, if the electrical resistance value exceeds the minimum value set for a given degree of dryness after a certain period of time from the start of operation, it will be judged as a small load, and the specific Even if the above minimum value is not exceeded after a certain period of time, the time from the subsequent detection of the minimum electrical resistance value to the next resistance value detection step is determined (evening 1), and if it is within the set time, it is determined that the amount is small, and the maximum resistance value is set. The system is designed to operate with detection 1 to solve the problem of insufficient drying.

Further, in the clothes dryer according to the present invention, in the clothes dryer that dries the clothes by flowing hot air through the clothes in the rotating drum, a humidity sensor is installed near the drum outlet to detect a change in humidity that indicates the degree of dryness of the clothes. A sensor is installed on the humidity detection circuit that converts the change in humidity into an electrical resistance value, and the electrical resistance value from this humidity detection circuit is compared with an electrical resistance value set corresponding to the arbitrary degree of dryness of the clothing. A comparison circuit compares both electrical resistance values at a predetermined time after the start of operation, and if the electrical resistance value converted by the humidity detection circuit exceeds the minimum resistance value set above, the amount of clothing is reduced to a small amount. If the minimum resistance value is not exceeded within the above-mentioned predetermined time, then measure the time from when the minimum resistance value is reached until the next set resistance value related to dryness is detected, and calculate that time. If the amount of clothing is within the set time, it is determined that the amount of clothing is small, and in both of these cases, the microcomputer operates in a manner that detects the maximum resistance value among the electrical resistance values set above. 3. [Embodiment of the Invention] An embodiment of the clothes drying method according to the present invention and an embodiment of a clothes dryer used for carrying out the same are combined. FIG. 1 is a partially opened longitudinal sectional view of a dehumidifying human dryer according to an embodiment of the present invention, which is used to carry out a method of drying clothes according to an embodiment of the invention. , Figure 2 shows that f! FIG. 4 is an explanatory diagram of the relationship between the electrical resistance value and the relative humidity measured by the humidity sensor.

In the figure, 1 is the outer frame, 2 is the drum related to the rotating drum, 3 is the heat source, 4 is the drum air outlet, 5 is the fan heat exchanger part, 6 is the duct, 7 is the double wing fan, 8 is the fan cable//g, 9 is felt, 10 is a humidity sensor related to humidity detection means, 11
is airtight felt, 12 is a partition board, 13 is a disc, 14
is the motor, 15 is the belt, 16 is the fan pulley, 17
18 is a fan belt, 18 is a duct, 19 is a back cover, 20 is a tram support part, and C can be operated from the outside.
The instruction control means, F is a filter.

The space between the drum air outlet 4 and the fan heat exchanger inlet 5 corresponds to the drum exit air path in the vicinity of the drum exit.

That is, what is shown in FIG. 1 includes a tram 2 rotatably supported within an outer frame 1, a heat source 3 associated with a heater for obtaining hot air, a belt 15 for driving the drum 2, and a motor 14. Then, a fan cage 8 housing a double-blade fan 7, which has an inlet opposite to the drum air outlet 4 related to the circulating air (solid arrow) outlet of the drum 2, is airtight with the drum 2 and the airtight felt 11. Keep it funky/
The partition of the fan cage 8 includes a partition plate 12 provided all around the inner periphery of the fan cage 7 8, and a disc 13 provided over the outer periphery of both wing fans 7 and having a felt 9 with low contact resistance affixed to the contact surface. , non-contact or contact,
It is airtightly partitioned into a circulation air path side and a cooling air path side, which will be described later.

The circulation side outlet of the fan cage 8 on the lower right side in FIG. 1 is connected to a duct 6 having a drainage port in the middle and a duct 18 to form a circulation air path.

The cooling air is still taken in through the air intake port provided in the center of the back cover 19 and exhausted from the top of the back cover 19 (dotted arrow), thereby forming a cooling air path. .

And, as mentioned earlier, the drum air outlet 4,
A humidity sensor 10 is installed between the air path between the fan heat exchanger inlet 5 and the inlet of the fan 7 and 8.

FIG. 2 is a block diagram of a control circuit using the humidity sensor 10 described above.

In addition, in FIG. 2, heater 3, humidity sensor 10, motor 1
The various components other than 4 form the instruction control means C mentioned earlier.

1. When the power switch is turned on, the -1 microcomputer is set to the initial state, and when the signal from the toe 1' switch is input to the microphone +1 computer via the photocoupler, it enters the drying mode setting waiting state. And, in the drying mode selection circuit, the drying chair I, which will be described later, is
・When the drying mode is selected, each electric resistance value set in advance corresponding to each drying mode and the humidity sensor 10 are selected.
The comparison circuit compares the electric resistance value from the humidity detection circuit that converts the humidity output from the humidity sensor 10 into an electric resistance value, and if the electric resistance value from the humidity sensor 10 is large, it is processed in the microcomputer and the next This allows the process to proceed.

Next, the automatic operation and stop mechanism will be explained with reference to FIG. are respectively R1°R2 and R3, for example, R1 is the electrical resistance value related to dryness with some moisture remaining, R2 is the electrical resistance value related to dryness with no moisture, and R3 is the electrical resistance value related to dryness with some moisture remaining. The respective electrical resistance values are set so that the electrical resistance value is related to the dryness of
R2 is called ``1 iron'', R2 is called ``1 standard'', and R3 is called ``careful'' drying.When the electrical resistance value of the set dryness is reached, the drying process is completed and stopped.

The initial process in Figure 3 means that even if the comparison circuit compares the electrical resistance value converted by the humidity detection circuit, the microcomputer does not issue the next instruction based on the comparison result with the set value. This is a step corresponding to time T1, and the humidity sensor detection step is a step corresponding to time T2 in which the electrical resistance value related to humidity is taken into the microcomputer and instruction control is performed.

Here, the explanation for drying a small amount of clothes is as follows.In the case of a small amount of clothes, hot air blows through, so the relative humidity is lower than when the load is large from the start of operation, and it is difficult to dry the clothes. Once you start, things change rapidly.

As the drying process nears the end, the curve becomes gentle as shown in A1 in Figure 3, making it difficult to dry. , which can provide sufficient dryness.

In other words, when drying a small load during drying, as shown in AI and A2 in Figure 3, the electrical resistance value changes rapidly from around the initial WTI due to the hot air blowing through.
When the "Standard" drying mode is selected, the dryness corresponding to the electrical resistance value and the dryness of the clothes in the drum 2 are:
They do not match, and the clothes in drum 2 are in an undried state.
Even with the "Standard" drying setting, "
It is something that needs to be thoroughly dried.

Therefore, in the present invention, in order to judge a small load, it is first checked whether there is a signal of the electrical resistance value R1 after the initial process Tl, and if there is, then
1, there is no signal of electrical resistance value R1, and sensor detection step T
2, and the time in the trench where the signal of the next set electric resistance value R2 is input is within the preset time t (minutes). In both cases, it is judged as a small load. Then, they were carefully dried until dry.

In addition, A3 in Fig. 3 shows the case where clothes of the rated capacity are dried, and this is the case where a predetermined degree of dryness can be obtained with a normal set electric resistance value. Figure 4 shows the relationship between the electrical resistance value measured by the humidity sensor and the relative humidity, and ψ1〉ψ
2〉ψ3, which is the electrical resistance value R1゜R2
, R3, respectively.

〔Effect of the invention〕

As described above, according to the present invention, even if a small load is applied and the type of fabric changes, the small load can be reliably judged using a two-stage determination method, and undrying can be prevented. This invention can be said to have excellent practical effects.

[Brief explanation of drawings]

The first method (method c) is a method for drying clothes according to an embodiment of the present invention.
') In fact, Fig. 2 is a partially opened vertical sectional view of a dehumidifying type clothes dryer according to an embodiment provided in 'r'6, and Fig. 2 is a block diagram of a control circuit using the humidity sensor. FIG. 3 is an explanatory diagram of the automatic operation stop mechanism, and No. 41'A is an explanatory diagram of the relationship between the electrical resistance value and the relative humidity determined by the humidity sensor. 1. Outer frame, 2. Drum, 3. Heat source, 4. Drum air outlet, 5. Fan heat exchanger population, 7. Double wing fan,
8.Fankaning, 10..Humidity sensor, 14.
・・Motor, 15・・Belt, 16・Fan fan. 17...Fan belt, 18...Event, 19...Back cover, 20...Drum support part, C...Indication/Immunization Control No. 3, Figure 4, Prisoner's work

Claims (1)

[Claims] 1. In a clothes drying method in which hot air flows through clothes in a rotating drum to dry them, a change in humidity detected by a humidity detection means provided near the drum outlet is converted into an electrical resistance value. , if the electrical resistance value exceeds the minimum resistance value among the electrical resistance values set corresponding to the desired degree of dryness of the clothing at a predetermined time after the start of operation, the amount of clothing is determined to be small, and If the minimum resistance value is not exceeded in time, then measure the time from when the minimum resistance value is reached until the next set resistance value related to dryness is detected, and if the time is within the set time, the clothing A method for drying clothes, characterized in that the amount is determined to be a small amount, and in both cases of these determinations, the operation is continued until the maximum resistance value among the electric resistance values set above is detected. 2. In the product described in claim 1, the electrical resistance values set corresponding to the dryness of "iron" drying, "standard" drying, and "careful" drying are
A method of drying clothes in which the minimum resistance value, the next set resistance value, and the maximum resistance value are set. 3. In a clothes dryer that dries clothes by flowing hot air through them in a rotating drum, a humidity sensor is installed near the drum outlet to detect changes in humidity that indicate the degree of dryness of the clothes, and the changes in humidity are measured using electrical resistance. A humidity detection circuit that converts the humidity into a humidity value, a comparison circuit that compares the electrical resistance value from this humidity detection circuit with an electrical resistance value set corresponding to the desired degree of dryness of the clothing, and a humidity detection circuit that If the electrical resistance value converted by the humidity detection circuit exceeds the minimum resistance value set above by comparing both electrical resistance values at a predetermined time, it is determined that the amount of clothing is small, and the minimum resistance value at the predetermined time is determined. If the resistance value does not exceed this value, measure the time from when the minimum resistance value is reached until the next set resistance value related to dryness is detected, and if that time is within the set time, the amount of clothing is determined to be small. In both of these judgments, the apparatus is characterized in that it is equipped with an instruction control means comprising a microcomputer that operates until the maximum resistance value among the electric resistance values set above is detected. Clothes dryer.