JP3036222B2 - Iron - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an iron capable of detecting a use condition of an iron, automatically setting a temperature of a base surface according to the use condition, and controlling a temperature suitable for the use condition. .

[0002]

2. Description of the Related Art A conventional iron has a base surface temperature of 1 with respect to a set temperature 15 set by a user as shown in FIG.
When the temperature 3 increases, the heater power 12 is turned off, and when the base surface temperature 13 decreases, the heater power 12 is turned on, and the average temperature 14 of the base surface temperature 13 is kept close to the set temperature 15.

[0003]

However, in the conventional iron, as shown in FIG.
Varies depending on the use condition of the iron. That is,
In the standby state A where the iron is not operated, the temperature rises sharply by the short-time supply of the heater power 12. Conversely, the temperature drop during the off time of the heater power is slow. For this reason, the average temperature 14 of the base surface is higher than the set temperature 15 and is biased in a standby state in which the iron is not operated. Further, during ironing B, the average temperature 15 of the base surface is lower than the set temperature and becomes a biased temperature. This is because the heat dissipated by the clothes being ironed causes the base to dissipate a large amount of heat, and the temperature of the base surface rises slowly even when the heater is turned on. This is because the decline is faster. As described above, in the conventional iron, the average temperature 14 of the base surface varies depending on the use state of the iron.

[0004] In recent years, there has been an increasing demand for obtaining a good finished state for ironing, and the existence of such fluctuations in the average temperature is a major problem.

An object of the present invention is to solve the above-mentioned conventional problems, and it is a first object of the present invention to provide an iron that always keeps the base surface temperature appropriately according to the use condition of the iron. It is a second object of the present invention to provide an iron that maintains the base surface temperature more appropriately.

[0006]

A first means of the present invention for achieving the first object is a heater for heating a base, a temperature detecting means for detecting a temperature of the base, and an output of the temperature detecting means. On / off control means for comparing the set temperature set by an external input to turn on / off the energization of the heater, and the on / off control means turns off the energization of the heater.
From the output of the temperature detecting means during the
When the gradient is detected and the heater is turned on,
In the off-period temperature gradient detection to suspend the detection of temperature gradient
Means, a correction value calculating means for calculating a correction value of the set temperature based on the temperature gradient, and a setting correction means for correcting the control temperature of the on / off control means with the correction value. .

[0007] A second means of the present invention for achieving the second object is, in addition to the constitution of the first means of the present invention, an off-period.
The temperature gradient detection means is based on the iron on / off operation cycle.
The temperature gradient during the off period every fixed period
And the correction value calculation means detects the
The detected temperature drop is detected as a temperature gradient, and this temperature drop is detected.
When the lower amount exceeds a certain value or more, the iron immediately outputs a correction signal to the setting correction means .

[0008]

The first means of the present invention utilizes the fact that the temperature gradient during turning off the power of the heater shows a value corresponding to the use state of the iron. This is to determine the state and to correct the set temperature appropriately.

The second means of the present invention provides, in addition to the operation of the first means of the present invention, a correction value calculated from a temperature gradient while the power supply to the heater is turned off within a next gradient detection period. The correction signal is output to prevent the temperature from dropping during use.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of an embodiment of the first means of the present invention will be described below with reference to FIGS. 1 is a base of an iron for ironing clothes, 2 is a heater for heating the base 1, 3 is a temperature detecting means for detecting the temperature of the base 1, and 4 is a setting input means for a user to set and input a base temperature. . Reference numeral 5 denotes on / off control means for controlling the temperature of the base 1, which compares the set temperature 10 set by the setting input means 4 with the base surface temperature 11 detected by the temperature detection means 3,
If the base surface temperature 11 is lower than the set temperature 10, the heater 2
Is turned on, and if the base surface temperature 11 is higher than the set temperature 10, the heater 2 is turned off. Reference numeral 6 denotes a gradient of the temperature drop from the output of the temperature detecting means 3 for 5 seconds while the output of the heater 2 is turned off by the on / off control means 5.
Off-period temperature gradient detection means (hereinafter referred to as temperature gradient)
) Of distribution sensing means, the setting correction means for correcting the control temperature of the on-off control means 5 8, a temperature gradient detecting means 9 6
Correction value calculating means for calculating an optimal correction value from the temperature gradient of the correction value calculating means 8 based on the correction value of the correction value calculating means 9.
Is for correcting the control temperature of the on / off control means 5.

The operation of the embodiment will be described below. The on / off control unit 5 compares the set temperature 10 set by the user in the setting input unit 4 with the base surface temperature 11 detected by the temperature detection unit 3, and uses the set temperature 10 as a boundary to control the heater 2. On / off control of energization is performed. At this time, if the base surface temperature 11 is in the standby state of ironing, the average temperature of the base surface becomes higher than the set temperature as shown in FIG. 6, and if the user is ironing, Temperature is lower than the set temperature. In this case, of course, the difference between the average temperature of the base 1 during the ironing and the set temperature 10 is related to the weight of the load. The inventor of the present invention has found that the heavy / light load causes the temperature of the base 1 to decrease while the on / off control means 5 is outputting the off state, that is, during a period in which the temperature of the base 1 decreases while the heater 2 is not energized. Is related to the amount of decrease within a certain period of time, in other words, the temperature gradient, from the experimental results shown in FIG. FIG. 2A shows a case where the load is light, and FIG.
FIG. 3C shows the case where the load is medium, and FIG. 3C shows the case where the load is heavy. That is, as shown in FIG. 3, the temperature gradient of the lowering base surface temperature over a certain period of time is proportional to the lightness / heavy load. That is, the heavier the load, the larger the temperature gradient value. The temperature gradient detecting means 6 reads the temperature gradient value at intervals of 5 seconds in this embodiment. The correction value calculating means 9 includes the temperature gradient detecting means 6.
, The set value of the setting input means 4 is corrected. As shown in FIG. 4, for example, when the load on the base 1 is small and the temperature gradient is 1, the correction value is 0, and when the load on the base 1 is large and the temperature gradient is 5, the correction value is 20, for example. , And this interval is set by a relation of a linear function. The setting correction means 8 receives the output of the correction value calculation means 9 and corrects the control temperature of the on / off control means 5.

In this way, for example, while the average temperature of the base surface is higher than the set temperature during the standby for ironing, the control temperature of the on / off control means 5 is corrected to be low in accordance with the state of the load. For this reason, the average temperature of the base 1 is controlled to be on / off at a temperature close to the set temperature. Also, while ironing, the average temperature of the base 1 is lower than the set temperature, but if the load becomes heavy,
The control temperature of the on / off control means 5 is corrected to be high. For this reason, the average temperature of the base 1 is controlled to be on / off at a temperature close to the set temperature.

As described above, according to the present embodiment, the temperature gradient of the base 1 is detected by the temperature gradient detecting means 6 to determine whether the load is heavy or light. The control temperature is automatically corrected. Therefore, in this embodiment, an iron that can always perform a good ironing operation is realized.

Next, an embodiment of the second means of the present invention will be described with reference to FIG. The same parts as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted. Only different points will be described. The correction value calculating means 7 includes the temperature detecting means 3
Receiving the information of the setting input means 4, the on / off detecting means 5, and the temperature gradient detecting means 6,
Is corrected.

The operation of this embodiment will be described below. Temperature gradient detecting means 6, as in the above embodiment, during the period when the heater 2 is the temperature of the base 1 is reduced in a non-energized state, Airo
At regular intervals with a cycle earlier than the on / off cycle of the
The amount by which the temperature of the base 1 falls within a certain time, in other words,
Temperature gradient is detected. This temperature gradient is proportional to the magnitude of the load on the base 1. The smaller the load, the smaller the temperature gradient, and the larger the load, the greater the temperature gradient. Correction value calculating means 7 receives a temperature gradient information of the temperature gradient detecting means 6, and a detection temperature information of the temperature detection means 3, the temperature
In this embodiment, the gradient value, that is, the temperature decrease amount reaches 3 or more.
When the can, the decrease amount detecting until the end of the period of a constant period
It acts so as to immediately turn on the power supply to the heater 2 without continuing.
That is, the correction value is calculated from the difference between the detected temperature of the temperature detecting means 3 and the set temperature of the setting input means 4. For example, if the set temperature is 190 degrees and the current temperature is 195 degrees,
The correction value is set to 5 from 195 to 190 = 5. The setting correction means 8 corrects the control temperature of the on / off control means 5 from the correction value. As a result, it is possible to immediately react to a rapid temperature drop of the base surface due to the use of ironing of a wet cloth or the use of steam, and the energization of the heater 2 can be started immediately.

As described above, according to the present embodiment, the apparatus comprises the temperature gradient detecting means 6, the setting correcting means 8, the setting input means 4 and the on / off control means 5, and the setting correcting means 8 based on the temperature gradient. By immediately determining a set correction value for turning on the power supply to the heater 2 and performing on / off power supply control of the heater 2 based on the result, it is possible to prevent a rapid decrease in the base surface temperature. Therefore, an iron that always supports good ironing work is realized.

[0017]

As described above, the first means of the present invention comprises a heater for heating the base, a temperature detecting means for detecting the temperature of the base, and a setting which is set by the output of the temperature detecting means and an external input. Turn on the heater power by comparing with the temperature.
And on-off control means for turning off control, the on-off system
Temperature gradient detecting means for detecting a temperature gradient at regular intervals from the output of the temperature detecting means while the power supply to the heater is turned off by the control means, and a correction for calculating a correction value of the set temperature based on the temperature gradient Value calculation means and this correction value
As an iron having a setting correction means for correcting the control temperature of the off control means, the setting of the control temperature of the base surface can be appropriately changed according to the use state, and a good ironing operation can always be performed.

According to a second means of the present invention, in addition to the configuration of the first means of the present invention, the correction value calculating means detects
When the temperature gradient, that is, the amount of temperature decrease exceeds a predetermined amount,
Can immediately calculate the correction amount and output a correction signal as an iron, which can immediately respond to a sudden temperature drop on the base surface due to the use of a wet cloth or steam and always good ironing work You can do it.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an iron according to an embodiment of a first means of the present invention.

FIG. 2 is a diagram showing an experimental example showing the relationship between the weight of the load and the temperature gradient of the base.

FIG. 3 is a diagram showing the relationship between the weight of the load and the temperature gradient of the base.

FIG. 4 is a characteristic diagram of a correction value included in the correction value calculation means.

FIG. 5 is a configuration diagram of an iron according to an embodiment of the second means of the present invention.

FIG. 6 is a diagram showing a temperature change of a base surface according to a use state of a conventional iron.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 2 Heater 3 Temperature detection means 5 ON / OFF control means 6 Temperature gradient detection means 7 Correction value calculation means 8 Setting correction means 9 Correction value calculation means

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) D06F 75/26

Claims (2)

(57) [Claims] 1. A heater for heating a base, a temperature detecting means for detecting a temperature of the base, and comparing the output of the temperature detecting means with a set temperature set by an external input to turn on / off the energization of the heater. On / off control means for controlling;
The on / off control means turns off the power supply to the heater.
During the period, the temperature gradient is detected from the output of the temperature detecting means.
During the period when the heater is turned on.
An off-period temperature gradient detecting means for suspending the detection of the degree gradient,
An iron having a correction value calculating means for calculating a correction value of the set temperature based on the temperature gradient, and a setting correction means for correcting the control temperature of the on / off control means with the correction value. 2. The off-period temperature gradient detecting means includes an iron
At a fixed cycle shorter than the ON / OFF operation cycle of
And a correction value calculating means for detecting the temperature gradient during the off period.
Is the temperature gradient detected by the fixed period
And this temperature drop exceeds a certain value or more.
And immediately outputting a correction signal to the setting correction means.
Iron described in.