JP2003336854A - Temperature controller for electric carpet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem of a conventional temperature controller for an electric carpet wherein a heat insulating material such as a cushion is locally mounted on the electric carpet, and the temperature of the part with the heat insulating material locally mounted thereon is abnormally raised to deteriorate a heater, shorten the life, and if things come to the worst, cause the disconnection of the heater. <P>SOLUTION: This temperature controller for the electric carpet is characterized in having a timer measuring the energization time to the heater, and a temperature set change determination means changing over the set temperature of the heater 7 to a new set temperature lower than the set temperature after the energization time measured by the timer 2 passes a prescribed time. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature control device for an electric carpet.

[0002]

2. Description of the Related Art FIG. 10 is a plan view showing the structure of an electric carpet. FIG. 11 is an explanatory diagram showing the configuration of the one-wire heater of the electric carpet shown in FIG.

Generally, an electric carpet has a carpet body 50 and a carpet body 50 as shown in FIG.
It is provided with a one-wire type heater 51 arranged in a meandering inside, and a temperature control device 52 for controlling energization of the one-line type heater 51 according to a set temperature.

As shown in FIG. 11, the one-wire heater 51 includes a winding core 53, a heater 54 wound around the winding surface of the winding core 53, and a circumferential surface of the winding core 53 from above the heater 54. An inner coating 55 that covers the inner coating 55, a detection wire 56 wound around the peripheral surface of the inner coating 55, and an outer coating 57 that covers the peripheral surface of the inner coating 55 from above the detection wire 56.

The conventional temperature control device 52 performs the following temperature control.

The detection wire 56 housed in the one-wire type heater 51 has a characteristic that its resistance increases when heated by the heater 54. Therefore, when the heater 54 is energized, a weak current is also applied to the detection line 56 at the same time, and the voltage across the detection line 56 is measured. Then, the heater 54 is on / off controlled so that the measured voltage across the detection line 56 does not exceed the upper and lower limit values according to the set temperature.

Specifically, when the voltage across the detection line 56 reaches the upper limit value, it is determined that the ambient temperature of the heater 54 has exceeded the upper limit value of the set heating temperature, and the temperature control device 52 is controlled. Power supply to the heater 54 is stopped by the heater driving means. Then, in this state, the detection line 56
The voltage across both ends of the heater 54 is measured while continuing to energize the heater. When the voltage across the heater reaches the lower limit value, it is determined that the ambient temperature of the heater 54 is below the lower limit value of the set heating temperature, and the heater 54 is energized. To resume.

With the above control method, the heating temperature of the electric carpet is kept constant at the set temperature by controlling the energization of the heater 54.

[0009]

However, in the conventional temperature control device for an electric carpet, when a heat insulating material such as a cushion is locally placed on the electric carpet, the heat insulating material is locally placed. The temperature of the portion abnormally rises, which causes deterioration of the one-wire type heater 51 and shortens the life thereof.
There was a problem of causing the disconnection of.

More specifically, when a heat insulating material such as a cushion is locally placed on the electric carpet, the resistance of the detection line 56 in the placed portion becomes relatively higher than the resistance in other regions. However, the total resistance of the detection line 56 is averaged with the resistance of the region where the temperature is not kept. Therefore, the both-end voltage detected by the detection line 56 for measuring the temperature is an averaged voltage of the heat-retaining portion and the non-heat-retaining portion, and it is impossible to determine that the heat is locally retained.

Further, as the room temperature becomes lower, the detection line 5
Since the voltage between both ends detected by 6 for measuring the temperature is close to the voltage at the time of low temperature, the temperature was kept more locally, and the temperature of the kept warm portion was raised.

For this reason, when the energization time is long, the room temperature is low, and in both of the above cases, the temperature of the heat retaining portion sharply rises, causing deterioration of the one-wire heater 51 and shortening its life. Not only that, but in the worst case, the one-wire heater 51 may be broken.

In view of the above problems, it is an object of the present invention to provide a temperature control device for an electric carpet capable of preventing deterioration of a one-wire heater.

[0014]

In order to achieve the above object, a temperature control device for an electric carpet according to a first aspect of the present invention is a drive means for energizing a heater to drive the heater, and a heater for the heater. Temperature detecting means for detecting a temperature, temperature setting means for setting a set temperature of the heater, and so that the temperature of the heater becomes the set temperature based on the output of the temperature detecting means and the output of the temperature setting means. In an electric carpet temperature control device comprising a control means for controlling the driving means, a measuring means for measuring an energization time to the heater, and an energization time measured by the measuring means after a predetermined time has passed, Temperature setting changing means for shifting the set temperature of the heater to a new set temperature lower than the set temperature is provided.

A temperature control device for an electric carpet according to a second aspect of the present invention is the temperature control device for an electric carpet according to the first aspect, further comprising room temperature detecting means for detecting a room temperature, and the output of the room temperature detecting means. And a determination means for determining whether or not the set temperature is to be changed to a new set temperature based on the outputs of the temperature setting means and the temperature setting means.

Further, the temperature control device for an electric carpet according to a third aspect of the present invention is the temperature control device for an electric carpet according to the second aspect, wherein the temperature setting changing means includes the output of the room temperature detecting means and the temperature. It is characterized in that the amount of transition from the set temperature to a new set temperature is set based on the output from the setting means.

In addition, the temperature control device for an electric carpet according to a fourth aspect of the present invention is the temperature control device for an electric carpet according to the third aspect, wherein the energizing time measured by the measuring means has passed a predetermined time. After that, the determination unit determines whether or not to shift the set temperature to a new set temperature based on the output of the room temperature detection unit and the output of the temperature setting unit, and The temperature setting changing means sets the amount of transition from the set temperature to a new set temperature based on the outputs of the room temperature detecting means and the temperature setting means.

According to the above structure, the temperature control device for an electric carpet according to the first aspect of the present invention comprises a measuring means for measuring the energization time to the heater and an energization time measured by the measuring means for a predetermined time. After the lapse of time, the temperature setting changing means for shifting the set temperature of the heater to a new set temperature lower than the set temperature is provided, so that a heat insulating material such as a cushion is locally placed on the electric carpet. Also, the temperature of the heat insulating portion of the electric carpet on which the heat insulating material is placed can be lowered by lowering the temperature of the heater after the energization time has passed a predetermined time, and the heat insulating portion is prevented from being overheated to a high temperature. can do.

The temperature control device for an electric carpet according to a second aspect of the present invention is the temperature control device for an electric carpet according to the first aspect, further comprising room temperature detecting means for detecting a room temperature, and an output of the room temperature detecting means. And a determination means for determining whether or not to shift the preset temperature to a new preset temperature on the basis of the outputs of the temperature setting means, the temperature of the electric carpet is kept from the relationship between the room temperature and the preset temperature. If it is determined that the part where the material is placed is overheated to a high temperature, the temperature is changed to a new set temperature, and if it is determined that the part where the heat insulation material of the electric carpet is placed is not heated to a high temperature, the temperature is changed. The set temperature set by the setting means can be maintained.

Further, the temperature control device for an electric carpet according to a third aspect of the present invention is the temperature control device for an electric carpet according to the second aspect, wherein the temperature setting changing means includes the output of the room temperature detecting means and the temperature. Since the amount of transition from the set temperature to the new set temperature is set on the basis of the output from the setting means, the transition is performed when the heater is energized frequently due to the relationship between the room temperature and the set temperature. The amount can be increased and the transfer amount can be reduced when the heater is not energized frequently.

In addition, the electric carpe of the fourth invention of the present invention
The temperature control device for the electric
In the temperature control device, the temperature measured by the measuring means is measured.
After the specified time has passed, the judgment hand
The output of the room temperature detection means and the output of the temperature setting means.
Based on the force, move the set temperature to a new set temperature
Whether or not the temperature setting change means is
The output of the room temperature detection means and the output of the temperature setting means
Based on the amount of transition from the set temperature to the new set temperature
Since the configuration is configured, the time will be
Even if the room temperature changes each time
Judgment whether to shift the set temperature to a new set temperature and
Look again at the amount of transition from the set temperature to the new set temperature.
It can be fixed.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a control block diagram of a temperature control device for an electric carpet according to an embodiment of the present invention.

As shown in FIG. 1, a temperature control device for an electric carpet according to an embodiment of the present invention includes temperature setting means 1 for setting a set temperature of a heater 7 based on a set temperature input by a user, A timer 2 which is a measuring means for measuring the energization time by measuring the time from the start of energization to the heater 7.
A room temperature detecting means 3 for detecting the room temperature in the room where the electric carpet is installed; a driving means 6 for turning on and off the heater 7; and a voltage across the detection line 56 (see FIG. 11) to measure the voltage. Temperature detecting means 8 for measuring the temperature of the heater 7,
Based on the output of the temperature detection means 8 and the output of the temperature setting means 1, the temperature of the heater 7 is set to the temperature setting means 8
And a control means 5 for controlling the driving means 6 so that the temperature is set to the preset temperature, and the room temperature detecting means is provided to the control means 6 after the energization time measured by the timer 2 has passed a predetermined time. It is determined whether to shift the set temperature to a new set temperature on the basis of the output of No. 3 and the output of the temperature setting means 1, and the set temperature of the heater 7 is set to be higher than the set temperature based on the determination result. The temperature setting change determination means 4 for shifting to a new low set temperature is provided.

The temperature control device for an electric carpet according to the first embodiment of the present invention will be described below.

FIG. 2 is a diagram showing the relationship between the energization time of the heater and the surface temperature of the heater of the temperature control device for the electric carpet according to the present embodiment, and FIG. 3 is the temperature of the electric carpet according to the present embodiment. It is a control flowchart of a control apparatus.

In the temperature control device for an electric carpet according to the present embodiment, the temperature setting change determining means 4 sets the temperature in the temperature setting means 1 after the energization time to the heater 7 has passed a predetermined time. Regardless of the initial set temperature, the control means 5 controls the energization by shifting to a new set temperature that is lower than the initial set temperature. After the energization of the heater 7 is started, the energization time t0 is reached. Controls at a set temperature according to the state of the temperature setting means 1 (for example, temperature adjustment position), and after the energization time t0, shifts to a new temperature setting regardless of the state of the temperature setting means 1 (for example, temperature adjustment position). , Control energization.

As a result, even if a heat insulating material such as a cushion is locally placed on the electric carpet, the heat insulating material of the electric carpet is placed by lowering the temperature of the heater after the energization time has passed a predetermined time. The temperature of the heat retaining portion can be lowered, and the heat retaining portion can be prevented from being overheated to a high temperature. Therefore, it is possible to prevent the heater from deteriorating due to being overheated to a high temperature and shortening its life or breaking the wire.

Next, a temperature control device for an electric carpet according to a second embodiment of the present invention will be described.

FIG. 4 is a diagram showing the relationship between the energization time of the heater and the surface temperature of the heater of the temperature control device for the electric carpet according to the present embodiment, and FIG. 5 is the temperature of the electric carpet according to the present embodiment. It is a control flowchart of a control apparatus.

In the temperature control device for an electric carpet according to the present embodiment, the temperature setting change determining means 4 sets the temperature in the temperature setting means 1 after the energization time to the heater 7 has passed a predetermined time. The initial setting temperature is changed to one of a plurality of new setting temperatures lower than the initial setting temperature, the energization control is performed by the control means 5, and a new setting having a lower temperature is set after a predetermined time. The temperature is shifted to control the energization of the control means 5. For example, after the energization of the heater 7 is started, the control is performed at the set temperature according to the state of the temperature setting means (for example, the temperature adjustment position) until the energization time t0. After the energization time t0, irrespective of the state of the temperature setting means 1 (for example, the temperature adjustment position), one of a plurality of new set temperatures is switched on and energized, and after a predetermined time t1, another new set temperature One of And line, to control power.

As a result, it is possible to prevent the heater from being deteriorated due to being overheated to a high temperature and shortening its life or breaking the wire, and also to let the user feel that the temperature has changed to a new set temperature. Can be prevented. Also, by providing more stages, the user's feeling can be surely prevented.

Next, a temperature control device for an electric carpet according to a third embodiment of the present invention will be described.

FIG. 6 is a diagram showing the relationship between the energization time of the heater and the surface temperature of the heater of the temperature control device for the electric carpet according to the present embodiment, and FIG. 7 is the temperature of the electric carpet according to the present embodiment. It is a control flowchart of a control apparatus. FIG. 8 is a diagram showing the relationship between the heater energization time and the heater surface temperature and room temperature of the temperature control device for an electric carpet according to the present embodiment.

As shown in FIG. 1, the temperature control device according to the present embodiment has a driving means 7 for turning on / off the electricity to the heater 7.
And the temperature detection means 8 for measuring the voltage across the detection line to measure the temperature of the heater 7, the timer 2 for measuring the time from the start of energization of the heater 7, and the room temperature where the electric carpet is used. The room temperature detecting means 3 and the temperature setting means 1 for setting the heating temperature of the electric carpet and instructing the setting to the control means 5 (for example, having temperature adjustment), the energizing time, the room temperature and the temperature setting means 1. And a control means 6 having a temperature setting change determination means 5 for determining whether to shift the initial set temperature to a new set temperature equal to or lower than the initial set temperature according to the state and shifting the temperature based on the determination result. After the start of energization of the heater 7, control is performed at an initial set temperature according to the state of the temperature setting means (for example, temperature adjustment position) until the energization time t0, and after the energization time t0 (for example, 3 hours), a fixed time Carried state of temperature setting means 1 (initial setting temperature) the sampling of the room temperature data from room detector 3 to 10 minutes) for each.

Then, assuming that the content of the preset temperature set in advance is, for example, FIG. 9, the temperature adjustment position is "5".
Then, the set temperature is "5" regardless of the room temperature from the start of energization to t0, and after the energization time t0, the set time is t1.
Sampling is performed every time, and the set temperature is "3" even if the room temperature is in the range of T01 to T12 (room temperature zone T1) even at the temperature adjustment position of "5". Also, the room temperature is T12.
Below (room temperature zone T2), the set temperature range is "1",
If the room temperature is equal to or higher than T01 (room temperature zone T2), the set temperature becomes "5" and the heater 7 is controlled. The T01 and T12 are set to 5 ° C. and 15 ° C., for example.

When the temperature adjustment position is changed within t1, the temperature adjustment position and the room temperature data are read at the next sampling, and the set temperature of the condition of FIG. 9 is set each time.

As a result, it is possible to prevent the heater from being deteriorated due to being overheated to a high temperature and having its life shortened or broken.

Further, when it is determined from the relationship between the room temperature and the set temperature that the portion of the electric carpet on which the heat insulating material is placed is overheated to a high temperature, the temperature is changed to a new set temperature and the heat insulating material of the electric carpet is set. When it is determined that the portion where is placed is not overheated to a high temperature, the set temperature set by the temperature setting means can be maintained, and a new set temperature can be set as necessary.

Further, from the relationship between the room temperature and the set temperature, when the heater is energized frequently (at low temperature of room temperature), the transfer amount is increased, and when the heater is not energized frequently ( When the temperature is high (room temperature), the transfer amount can be reduced and an appropriate transfer amount can be set.

In addition, even if the room temperature changes every time after the elapse of the predetermined time, it is judged whether the set temperature is to be changed to a new set temperature or not. It is possible to review again the amount of transition to a preset temperature.

In the second and third embodiments,
The relationship between the room temperature and the set temperature is determined by the temperature setting change determination means by determining whether to shift the set temperature to a new set temperature based on the output of the room temperature detection means and the output of the temperature setting means. Therefore, if it is determined that the portion of the electric carpet on which the heat insulating material is placed is overheated to a high temperature, the temperature is changed to a new set temperature, and the portion of the electric carpet on which the heat insulating material is placed must not be overheated to a high temperature. When the determination is made, the set temperature set by the temperature setting means can be maintained, and a new set temperature can be set as necessary.

[0043]

As described above, according to the temperature control device for the electric carpet of the first aspect of the present invention, the measuring means for measuring the energization time to the heater and the energization measured by the measuring means. After a predetermined time has passed, the temperature setting changing means for shifting the set temperature of the heater to a new set temperature lower than the set temperature is provided, so that the heat insulating material such as a cushion is locally provided on the electric carpet. Even when placed, the temperature of the heat insulating portion on which the heat insulating material of the electric carpet is placed can be lowered by lowering the temperature of the heater after the energization time has passed a predetermined time, and the heat insulating portion is overheated to a high temperature. Can be prevented. Therefore, it is possible to prevent the heater from deteriorating due to being overheated to a high temperature and shortening its life or breaking the wire.

According to the temperature control device for an electric carpet of the second invention of the present invention, in the temperature control device for an electric carpet of the first invention, room temperature detecting means for detecting room temperature is provided, and the room temperature detecting means is provided. And a determination means for determining whether or not to shift the set temperature to a new set temperature based on the output of the temperature setting means and the output of the temperature setting means. When it is determined that the part where the heat insulating material is placed is overheated to a high temperature, the temperature is changed to a new set temperature, and when it is determined that the part where the heat insulating material is placed on the electric carpet is not overheated to a high temperature. Can maintain the set temperature set by the temperature setting means. Therefore, it is possible to shift to a new set temperature as needed.

Further, according to the temperature control device for the electric carpet of the third invention of the present invention, in the temperature control device for the electric carpet of the second invention, the temperature setting changing means outputs the output of the room temperature detecting means. Since the amount of transition from the set temperature to the new set temperature is set based on the output from the temperature setting means, when the heater is energized frequently due to the relationship between the room temperature and the set temperature. Can increase the transfer amount, and can decrease the transfer amount when the heater is not energized frequently. Therefore, an appropriate transfer amount can be set.

In addition, according to the temperature control device for the electric carpet of the fourth invention of the present invention, in the temperature control device for the electric carpet of the third invention, the energization time measured by the measuring means is a predetermined time. After elapse of time, the determination means determines whether to shift the set temperature to a new set temperature based on the output of the room temperature detection means and the output of the temperature setting means, Moreover, since the temperature setting changing means is configured to set the transition amount from the set temperature to a new set temperature based on the output of the room temperature detecting means and the output of the temperature setting means, after a predetermined time has elapsed Even if the room temperature changes with the lapse of time, it is necessary to re-evaluate whether or not the set temperature is changed to a new set temperature and the amount of change from the set temperature to the new set temperature. But Kill.

[Brief description of drawings]

FIG. 1 is a control block diagram of a temperature control device for an electric carpet according to an embodiment of the present invention.

FIG. 2 is a diagram showing the relationship between the heater energization time and the heater surface temperature of the temperature control device for an electric carpet according to the first embodiment of the present invention.

FIG. 3 is a control flowchart of a temperature control device for an electric carpet according to the first embodiment of the present invention.

FIG. 4 is a diagram showing a relationship between a heater energization time and a heater surface temperature of a temperature control device for an electric carpet according to a second embodiment of the present invention.

FIG. 5 is a control flowchart of a temperature control device for an electric carpet according to a second embodiment of the present invention.

FIG. 6 is a diagram showing a relationship between a heater energization time and a heater surface temperature of a temperature control device for an electric carpet according to a third embodiment of the present invention.

FIG. 7 is a control flowchart of a temperature control device for an electric carpet according to a third embodiment of the present invention.

FIG. 8 is a diagram showing a relationship between a heater energization time and a heater surface temperature and room temperature of a temperature control device for an electric carpet according to a third embodiment of the present invention.

FIG. 9 is a diagram showing a relationship between room temperature and a new set temperature.

FIG. 10 is a plan view showing a configuration of an electric carpet.

11 is an explanatory diagram showing a configuration of a one-wire heater of the electric carpet shown in FIG.

[Explanation of symbols]

1 Temperature setting means 2 timer 3 Room temperature detection means 4 Temperature setting change judgment means 5 Control means 6 Drive means 7 heater 8 Temperature detection means

Claims (4)

[Claims] 1. A driving means for energizing a heater to drive the heater, a temperature detecting means for detecting a temperature of the heater, and a temperature setting means for setting a set temperature of the heater.
A temperature control device for an electric carpet, comprising: a control means for controlling the driving means so that the temperature of the heater becomes the set temperature based on the output of the temperature detecting means and the output of the temperature setting means. Measuring means for measuring energization time to the heater, and temperature setting changing means for shifting the set temperature of the heater to a new set temperature lower than the set temperature after the energized time measured by the measuring means has passed a predetermined time. And a temperature control device for an electric carpet. 2. A room temperature detecting means for detecting a room temperature is provided, and it is judged whether or not the set temperature is shifted to a new set temperature based on an output of the room temperature detecting means and an output of the temperature setting means. The temperature control device for an electric carpet according to claim 1, further comprising: 3. The temperature setting change means sets a transition amount from the set temperature to a new set temperature based on an output of the room temperature detecting means and an output of the temperature setting means. The temperature control device for an electric carpet according to claim 2. 4. The determination unit sets the setting based on the output of the room temperature detection unit and the output of the temperature setting unit at regular time intervals after a lapse of a predetermined time of the energization time measured by the measuring unit. It is determined whether or not to shift the temperature to a new set temperature, and the temperature setting change means changes the set temperature from the set temperature to a new set temperature based on the outputs of the room temperature detection means and the temperature setting means. The temperature control device for an electric carpet according to claim 3, wherein the amount of transition to (4) is set.