JP3286985B2 - Heating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device such as an electric carpet and floor heating.

[0002]

2. Description of the Related Art Heretofore, this type of warming device, for example, an electric carpet, has been constructed as shown in FIGS. Hereinafter, the configuration will be described.

As shown in the figure, a heating means 1 is meanderingly arranged in a carpet body 2 together with a temperature detecting means 3 made of a polymer thermosensitive material, and is controlled by a controller 4. The controller 4 includes a control unit 5, a temperature setting unit 6, and a set temperature correction unit 7. The control unit 5 compares the temperature set by the temperature setting unit 6 with the temperature detected by the temperature detection unit 3, and controls the heating unit. 1 is controlled.
However, the heating means 1 includes the top cloth 8, the felt material 9 and the mat cloth 1
The temperature detecting means 3 detects the heat generated from the heating means 1 via the felt material 9. On the other hand, the user feels the heat generated from the heating means 1 via the felt material 9 and the outer cloth 8. Also, the felt material 9 is larger than the heating area of the heating means 1.
In addition, since the volume of the outer cloth 8 is very large, it takes a very long time to sufficiently warm the entire carpet body 2 at the start of energization of the carpet body 2. Therefore, as shown in FIG. 7, at the start of energization, the surface temperature of the carpet body 2 is much lower than the temperature detected by the temperature detecting means 3. Therefore, at the start of energization, the surface temperature is felt lower than the set temperature, and the user further increases the set temperature.

In order to solve this problem, in order to quickly raise the surface temperature to the set temperature, the temperature set in the temperature setting means 6 is corrected by the set temperature correction means 7 at the start of energization, as shown in FIG. In this way, a method of increasing the set temperature is adopted. After the correction of the set temperature, if the temperature detected by the temperature detecting means 3 reaches the corrected set temperature, the correction amount is set to 0, and the set temperature is returned to the temperature set in the temperature setting means for control. .

[0005]

In such a conventional heating device, when the set temperature is low, the surface temperature is equal to the set temperature, as shown by the characteristic A in FIG.
If the set temperature is high, the temperature of the carpet main body 2 may be too high, giving a feeling of discomfort. That is, due to the balance between the heat generation capacity of the heating means 1 and the heat radiation from the carpet main body 2, the temperature rise curve of the carpet main body 2 tends to be saturated as the temperature increases, as shown in FIG.
Therefore, when the set temperature is high, the time until the set temperature is reached is prolonged, and during that time, the difference between the temperature detected by the temperature detecting means 3 and the surface temperature of the carpet body 2 is reduced. Therefore, when the set temperature is corrected to be higher by the set temperature correction means 7 in order to make the set temperature follow the detected temperature increase when the set temperature is high, the surface temperature becomes lower than the user's temperature as shown by the characteristic B in FIG. There was a problem that the state in which the temperature became higher than the set temperature continued for a long time.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide an easy-to-use heating device capable of obtaining an optimum rising characteristic at any set temperature at the start of energization.

[0007]

In order to achieve the above object, the present invention provides a heating means, a temperature detecting means for detecting a temperature of the heating means, a temperature setting means for setting a temperature of the heating means, Control means for comparing the output from the temperature setting means with the output from the temperature detecting means to control the heating means, and increasing the temperature set by the temperature setting means at the start of energization of the heating means. And a set temperature discriminating means for discriminating the set temperature set by the temperature setting means, wherein the set amount is corrected to 0 after the output of the temperature detecting means reaches the corrected set temperature. When the set temperature set by the set temperature determining means is determined to be equal to or higher than a certain temperature, the correction amount by the set temperature correcting means is used when the set temperature is equal to or less than the certain temperature. Ri is the SUMMARY that so as to reduce.

[0008]

According to the present invention, the set temperature is determined by the set temperature determining means at the start of energization by the above-described problem solving means.
If the set temperature is lower than the fixed temperature, the set temperature correcting means corrects and controls the temperature set by the temperature setting means to be higher, thereby improving a delay in rising of the surface temperature. If the set temperature is higher than a certain temperature,
By making the correction amount of the set temperature by the set temperature correction means smaller than the correction amount when the set temperature is lower than the fixed temperature, it is possible to prevent the surface temperature from excessively rising. Therefore, an optimum start-up characteristic can be obtained at any set temperature at the start of energization.

[0009]

An embodiment of the present invention will be described below with reference to FIG. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIG. 1, the controller 10 comprises a control means 11, a temperature setting means 12, a set temperature correction means 13 and a set temperature discrimination means 14. The control means 11 controls the heating means 1 by comparing the temperature set by the temperature setting means 12 with the temperature detected by the temperature detection means 3 by the user to set the carpet body to a desired surface temperature. The set temperature correction means 13 corrects the set temperature in the temperature setting means 12 in order to improve the rise of the surface temperature at the start of energization of the carpet body. The set temperature determining means 14 determines the set temperature set by the temperature setting means 12.

The operation of the above configuration will be described with reference to FIGS. 2 and 3. First, if the set temperature is equal to or lower than a certain temperature (a temperature near the maximum setting), when the energization is started, FIG. In step 1, set temperature discriminating means 14
Is used to confirm how much the temperature has been set by the temperature setting means 12. At the start of energization, as described in the conventional example, due to the delay in temperature rise of the surface temperature of the carpet body,
The surface temperature of the carpet body is lower than the temperature detected by the temperature detecting means 3. Therefore, when the set temperature is low, even if the temperature detected by the temperature detecting means 3 reaches the set temperature, the surface temperature becomes lower than the set temperature. In order to improve this, if it is determined in step 1 that the set temperature is equal to or lower than the predetermined temperature, in step 2, the set temperature is corrected by the set temperature correction unit 13 by ΔT1. In step 3, the detected temperature detected by the temperature detecting means 3 is compared with a higher set temperature. If the detected temperature is lower than the set temperature, a heating instruction is issued to the heating means 1 in step 4 to continue heating. When the detected temperature becomes higher than the set temperature,
As shown by the characteristic A in FIG. 3, the detected temperature is higher than the set temperature initially set by the user, but the surface temperature is close to the set temperature set by the user. Therefore, in step 6, the correction amount is set to 0, the set temperature is returned to the set temperature set by the user, and in step 7, heating by the heating means 1 is prohibited. Thereafter, while successively comparing the set temperature with the temperature detecting means 3, the instruction and inhibition of heating by the heating means 1 are repeated to control the surface temperature of the carpet body.

Next, when the set temperature is equal to or higher than a predetermined temperature, the higher the set temperature, the more the temperature rise curve of the carpet body tends to be saturated. The time to reach the temperature is longer. Until the detected temperature reaches the set temperature, heating by the heating means 1 is continued. If the heating time is long, the heat is sufficiently transmitted to the entire carpet body, so that the temperature difference between the detected temperature detected by the temperature detecting means 3 and the surface temperature of the carpet body is eliminated. Therefore, when the set temperature is equal to or higher than a certain temperature, for example, the highest set temperature, if the correction is performed by ΔT1 in the same manner as in the case where the set temperature is equal to or lower than the above-described certain temperature, the surface temperature of the user becomes lower The state where the temperature becomes higher than the initially set temperature continues for a long time. In order to improve this, if it is determined in step 1 that the set temperature is equal to or higher than the predetermined temperature, in step 5, the set temperature is corrected by ΔT2. Here, ΔT2
Is smaller than the correction amount ΔT1 when the set temperature is equal to or lower than the fixed temperature. FIG. 3 shows an example in which ΔT2 is set to 0. In step 3, the detected temperature detected by the temperature detecting means 3 is compared with the set temperature corrected by ΔT2. If the detected temperature is lower than the corrected set temperature, in step 4 heating is instructed to the heating means 1 to continue heating. When the detected temperature is higher than the corrected set temperature, the set temperature correction amount is set to 0 in step 6,
In step 7, the heating by the heating means 1 is prohibited. Since then
While successively comparing the set temperature with the temperature detecting means 3, the instruction and the inhibition of the heating by the heating means 1 are repeated to control the surface temperature of the carpet body. In this case, as shown by the characteristic B in FIG. 3, there is no difference between the detected temperature and the surface temperature, and both are temperatures close to the set temperature set by the user.

[0013]

As is clear from the above embodiments, according to the present invention, the set temperature is corrected by the set temperature correcting means at the start of energization so that the set temperature is increased. The delay in temperature rise can be improved, and the set temperature is determined by the set temperature determining means. When the set temperature is higher than the fixed temperature, the correction is performed with a smaller correction amount than when the set temperature is lower than the fixed temperature. So
When the set temperature is high, it is possible to prevent the surface temperature from excessively rising due to excessive correction. That is, it is possible to obtain a comfortable heating effect that quickly reaches the temperature desired by the user without any trouble due to the level of the set temperature.

[Brief description of the drawings]

FIG. 1 is a block diagram of a heating device according to an embodiment of the present invention.

FIG. 2 is a control flowchart of the heating device.

FIG. 3 is a temperature characteristic diagram of the warming device.

FIG. 4 is a block diagram of a conventional warming device.

FIG. 5 is a top view of the warming device.

FIG. 6 is an enlarged sectional view of the warming device.

FIG. 7 is a temperature characteristic diagram of the heating device.

FIG. 8 is a temperature characteristic diagram when the rising characteristic of the warming device is corrected.

FIG. 9 is a temperature characteristic diagram of the heating device.

FIG. 10 is a diagram showing a temperature rise characteristic of the heating device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heating means 3 Temperature detecting means 11 Control means 12 Temperature setting means 13 Set temperature correcting means 14 Set temperature discriminating means

Continuation of the front page (72) Inventor Tokio Kawai 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-64-78309 (JP, A) JP-A-58-184616 (JP, A) JP-A-58-129514 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G05D 23/00-23/32

Claims (1)

(57) [Claims] 1. A heating means, a temperature detecting means for detecting a temperature of the heating means, a temperature setting means for setting a temperature of the heating means, an output from the temperature setting means and an output from the temperature detecting means. And a control means for controlling the heating means, and correcting the set temperature set by the temperature setting means to a higher temperature side at the start of energization of the heating means, so that the output of the temperature detecting means is corrected. A set temperature correction unit that sets a correction amount to 0 after the set temperature is reached; and a set temperature determination unit that determines a set temperature set by the temperature setting unit. When the set temperature is determined to be equal to or higher than a certain temperature, the amount of correction by the set temperature correction means is made smaller than when the set temperature is equal to or lower than the certain temperature.