JPH113U - Temperature control device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a temperature control device capable of reducing power consumption and giving a user a comfortable sensation. SOLUTION: Over a first period immediately after the start of power supply by a power supply means, a first control means for controlling a heating value of a heating element to set a temperature detected by a temperature detection means to a set temperature by a temperature setting means. And controlling the amount of heat generated by the heating element so as to lower the detected temperature controlled by the first control means within a range in which a temperature change is not felt, over a second period immediately after the first period. Second control means.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a temperature control device, and more particularly, to a temperature control device that continuously changes the amount of heat generated by a heating element to adjust the temperature accompanying the heat generation.

[0002]

[Prior art]

 Conventionally, an electric carpet has been used as one method of floor heating.

[0003] An electric carpet has an electric heater incorporated in a carpet placed on the floor, and heat from the heater can be directly heated by conduction and radiation. The structure of the electric carpet is a heating section in which the heater is incorporated in the carpet, and a structure of the heater. And a temperature control unit for performing temperature control.

Meanwhile, as a method of controlling the amount of heat generated by the electric carpet, a phase control method and a method in which power consumption is kept constant to control whether or not power is supplied to a heater (hereinafter, referred to as ON / OFF control). There is. More specifically, the ON / OFF control method stops (turns off) power to the heater based on a detection signal for detecting the temperature of the heater while the detection signal level exceeds a certain temperature level. After that, when the detection signal level falls below the certain temperature level, the electric carpet surface temperature is kept constant by a repetitive ON / OFF control such that power supply to the heater is started (ON). .

On the other hand, in the phase control method, the amount of heat generated by the heater is variably adjusted by continuously changing the energization period of the heater based on a control signal of the phase control circuit, thereby keeping the surface temperature of the electric carpet constant. To hold. Therefore, the phase control method has a feature that the surface temperature of the carpet can be stably maintained without causing temperature unevenness, as compared with the ON / OFF control method.

Hereinafter, an electric carpet in which a heating value of a heater is adjusted by the phase control method will be described in detail with reference to the drawings.

FIG. 4 is a schematic diagram showing a functional configuration of an electric carpet temperature control device in which the amount of heat generated is controlled by a conventional phase control method.

[0008] In the figure, a temperature control device for a kiln carpet is supplied from a commercial power supply 1 for supplying AC power, a power switch 2, and the commercial power supply 1 when the power switch 2 is turned on. It includes a transformer 3 for transforming (in this case, stepping down) an AC voltage, and a rectifier network 4 for receiving an AC voltage supplied through the transformer 3, rectifying the whole wave, converting the DC voltage into a DC voltage, and outputting the DC voltage. Further, the temperature control device includes a gate voltage application circuit 5, a microcomputer 6, a temperature adjustment volume 7, a triac (bidirectional three-pole thyristor) 8, a heater 9 serving as a heating wire, and a heat-sensing device for detecting the amount of heat generated by the heater 9. Unit 10, including a reactor L1 and capacitors C1 to C3.

The microcomputer 6 has a built-in CPU (abbreviated central processing unit) 61 and a memory 62 and automatically controls the temperature of the temperature control device. More specifically, temperature control is performed by a phase control method using a circuit configuration including a microcomputer 6, a gate voltage application circuit 5, a temperature adjustment volume 7, a triac 8, a heater 9, and a heat sensitive portion 10. That is, when the heater 9 generates heat, the heat sensing section 10 senses the heat and gives the microcomputer 6 a heat sensing resistance value Rv corresponding to the level of the heat sensing. In response, the microcomputer 6 sets the phase, that is, the control angle, for triggering the triac 8 based on the thermal resistance value Rv and the desired set temperature of the electric carpet set by the temperature adjustment volume 7. decide. The control angle determined in this way is supplied from the microcomputer 6 to the next gate voltage application circuit 5 as a control signal S1. In response, the gate voltage application circuit 5 oscillates a gate trigger pulse GP for triggering the triac 8 at the phase determined based on the control signal S1, and provides the triac 8 with the gate trigger pulse GP.

[0010] The triac 8 is turned on in response to the trigger pulse GP given. Since the heater 9 is energized and generates heat in accordance with the conduction period of the triac 8, the surface temperature of the carpet changes according to the amount of heat generated. At the same time, the amount of heat generated by the heater 9 is sensed by the heat sensing unit 10, and the heat sensing resistance value Rv is given to the microcomputer 6 again. Accordingly, the microcomputer 6 continuously performs a kind of feedback control such as outputting the control signal S1 in the same manner as described above.

In the phase control method configured as described above, the microcomputer 6 determines a phase at which the triac 8 is triggered, that is, a control angle, and the gate voltage application circuit 5 triggers the triac 8 at that phase. Pulse (having a gate voltage level sufficient for the triac 8 to conduct) is oscillated. That is, the conduction period of the triac 8 is controlled by changing the phase (oscillation cycle) of the trigger pulse GP, and the energization period (heat generation amount) of the heater 9 is variably controlled to stabilize the surface temperature of the carpet. Let me. If the applied voltage is high and the current rise rate di / dt is large, the triac 8 will burn out. Therefore, it is necessary to suppress the rise of the current so that the di / dt does not increase. Reactor L1 is provided in series. In addition, a drastic dv / dt (sometimes due to a phase shift between current and voltage) may occur in the triac 8, and in order to keep this value within the rated value of the triac 8, the triac 8 8, a capacitor C1 is provided in parallel.

Next, the operation of the conventional temperature control device based on the electric carpet phase control method will be described in detail with reference to FIGS. FIG. 5 is a schematic processing flowchart showing a control operation of the temperature control device shown in FIG. This processing flow is stored in advance in the memory 62 of the microcomputer 6 as a program, and is repeatedly executed at regular intervals during the power-on period under the control of the CPU 61. Note that the CPU 61 starts executing this processing in response to the power switch 2 being turned “ON”.

First, a power switch 2 of the electric carpet is set to an “ON” state by a user. At the same time, the temperature adjustment volume 7 is operated to set a desired surface temperature.

Now, in response to the power switch 2 being turned “ON”, the supply of AC power from the commercial power supply 1 is started. Thereafter, the supplied AC power is supplied from the primary side to the secondary side of the transformer 3 and is transformed (stepped down) to a voltage level required for the electric carbet. The AC power thus transformed is full-wave rectified in the next rectifier network 4 and output as a DC voltage, and energization to the gate voltage application circuit 5 and the microcomputer 6 connected to the next and subsequent stages is started. .

The microcomputer 6 has a power consumption amount uniquely determined by a relationship between a surface area of the electric carpet (one tatami mat, two tatami mats, three tatami mats, etc.) and a set temperature given from the temperature control volume 7. Is stored in the memory 62 in advance. In this case, it is assumed that the surface area of the electric cab is fixed.

First, the microcomputer 6 sends to the gate voltage application circuit 5 a control signal S1 in response to power consumption determined according to a default value of the surface temperature of the electric carpet (= interpretation when omitted; for example, 38 ° C.). give. In other words, the CPU 61 of the microcomputer 6 applies the gate signal to the control signal S1 so as to output a trigger pulse GP for determining the conduction period of the triac 8 in step S10 (abbreviated to S10 in the figure) of FIG. Output to the circuit 5.

Therefore, the triac 8 is bidirectionally energized from the commercial power supply 1 in response to the “ON” state of the power switch 2 and is set to a conductive (ON) state by the trigger pulse GP. Therefore, the conduction (ON) state of the triac 8 is set in synchronization with the AC frequency of the commercial power supply 1. As described above, the heater 9 is continuously energized and generates heat due to the repetition of the conduction (on) period of the triac 8 at every fixed cycle. In parallel, the CPU 61 shifts to the processing of the next step S20.

In step S 20, the CPU 61 reads the temperature T 1 set to a desired value by operating the temperature adjustment volume 7 and temporarily stores it in the memory 62. Subsequently, in step S30, the CPU 61 reads the heat-sensitive resistance value Rv from the heat-sensitive portion 10 that senses the heat generated by the heater 9 into the internal buffer. In response, the CPU 61 obtains a surface temperature detection temperature T2 uniquely determined according to the thermal resistance value Rv.

More specifically, since the surface temperature corresponding to the heat-sensitive resistance value Rv is stored in advance in the memory 62 as data, the CPU 61 reads the corresponding surface temperature from the memory 62 based on the obtained heat-sensitive resistance value Rv. The temperature can be searched and read. The surface temperature read in this way is temporarily stored in the memory 62 as the detected temperature T2.

As described above, the desired set temperature T1 of the electric carpet and the detected temperature T2, which is the actual actual surface temperature of the electric carpet, are obtained. In response to this, the CPU 61 shifts to the determination processing in the next step S40.

In step S40, it is determined whether the detected temperature T2 is equal to the set temperature T1. In other words, it is determined whether or not the surface temperature of the electric carpet has reached the set temperature T1 and is stable. If it is determined that (detection temperature T2 = set temperature T1) holds as a result of this determination. Then, the process proceeds to the process of step S50 described later. However, when it is determined that (the detected temperature T2 ≠ the set temperature T1), the process proceeds to step S41, and a new control signal S1 is set.

More specifically, the detected temperature T2 corresponding to the surface temperature of the electric carpet is determined by the amount of heat generated by the heater, and the amount of heat generated by the heater 9 is determined by the conduction period of the triac 8, that is, the oscillation of the trigger pulse GP. Determined by the cycle. Therefore, if (detected temperature T2> set temperature T1), the CPU 61 generates and outputs a control signal S1 for shortening the conduction period of the triac 8, so as to lower the detected temperature T2 to the set temperature T1. Conversely, if (detection temperature T2 <set temperature T1), a control signal for extending the conduction period of the triac 8 so as to increase the amount of heat generated by the heater 9 and raise the detected temperature T2 to the set temperature T1. Generate and output S1.

After that, the process returns to the above-described step S1O, and the same processing is performed based on the new control signal S1 set in the step S41. If it is determined that the process returns to the above-described step S40 (detected temperature T2 = set temperature T1), the process proceeds to step S50. In step S50, in response to the result of the determination in step S40, the surface temperature of the electric carpet reaches the set temperature T1 and is in a stable state, so that the electric carpet is operated to maintain the current surface temperature. That is, the signal level of the control signal S1 is set and output so as to maintain the current surface temperature.

Thereafter, in step S60, it is determined whether or not the power switch 2 is set to the “OFF” state. When the power switch 2 is turned "OFF", the supply of power to the microcomputer 6 itself stops, so that a series of processing by the CPU 61 is forcibly terminated. If the power switch 2 is not "OFF" and continues to be in the "ON" state, the process returns to step S10 again, and the subsequent processing is repeated in the same manner.

As described above, since the heat generation amount (powering period) of the heater 9 controlled by the phase control method of the temperature control device is continuously variably adjusted, the surface temperature of the electric carpet becomes uneven. A steep rise and fall in temperature) is suppressed, and a comfortable sensation can be given to the user.

[0026]

[Problems to be Solved by the Invention] As described above, the electric carpet whose temperature is controlled by the phase control method has a feature that the carpet surface temperature can be maintained substantially constant over a power-on period (use state). I have. However, there is a problem in that the human being on the electric carpet feels warmer and feels more uncomfortable even at the same temperature when the user warms up to a certain extent. Further, in the above-described temperature control by the phase control method, there is a problem that it is difficult to reduce power consumption because the control is continuous.

[0027] Therefore, an object of the present invention is to provide a temperature control device that can reduce the amount of power consumption and can provide a user with a comfortable sensation.

[0028]

[Means for Solving the Problems]

 A temperature control device according to the present invention is a temperature control device for controlling a temperature associated with heat generation of a heating element, comprising a power supply means and a temperature setting means for setting a temperature associated with heat generation of the heating element to a desired temperature. Temperature detecting means for detecting a temperature associated with heat generation of the heating element; and a temperature detected by the temperature detecting means for a first period immediately after the power supply by the power supply means is started. First control means for controlling the amount of heat generated by the heating element in order to set the temperature to be equal to, and detecting the detected temperature controlled by the first control means for a second period immediately after the first period. And a second control means for controlling the amount of heat generated by the heating element so that the change is low within a range where the change is not felt.

Since the temperature control device according to the present invention is configured as described above, the temperature control by the second control means during the second period changes the temperature accompanying the heat generation by a predetermined temperature to thereby reduce the heat generation. The amount, that is, the power consumption of the heating element can be reduced.

[0030]

[Embodiment of the invention]

 Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic diagram showing a functional configuration of an electric carpet temperature control device capable of controlling an amount of heat generated by a phase control method according to an embodiment of the present invention and achieving an energy saving effect.

The temperature control device according to the embodiment of the present invention shown in FIG. 1 is compared with the conventional temperature control device shown in FIG. The point is that a switch (hereinafter, abbreviated as an energy saving switch) 11 for energy saving for the purpose of reducing power consumption is added. The other functional configuration and the operation of each circuit shown in FIG. 1 are the same as the conventional functional configuration and operation shown in FIG.

In FIG. 1, a temperature control device includes a microcomputer 6 including a commercial power supply 1, a power switch 2, a transformer 3, a rectifier circuit 4, a gate voltage application circuit 5, a CPU 61 and a memory 62, The microcomputer 6 includes a volume 7, a triac 8, a heater 9, a heat sensitive part 10, a reactor L1, and capacitors C1 to C3, and newly sends a control signal S2 to the microcomputer 6 according to the "ON" or "OFF" state of the switch. Including the energy saving switch 11 to give.

Here, an outline of the power consumption reduction method of the temperature control device shown in FIG. 1 will be described with reference to FIGS. 1 and 2. FIG. 2 is a diagram for explaining the transition of the surface temperature due to the power consumption reduction effect of the temperature control device shown in FIG. 1, in which the vertical axis represents temperature and the horizontal axis represents time. In the drawing, the solid line indicates the state where the energy saving switch 11 is “ON”, and the dotted line indicates the state where the energy saving switch 11 is not provided or the state where the energy saving switch 11 is “OFF”.

As shown in FIG. 2, the temperature control device shown in FIG. 1 controls the heater 9 to start generating heat in response to the power being turned on by the power switch 2, and sets a period after the power is turned on. At t1, the surface temperature (detection temperature T2) of the electric carpet is raised and stably maintained up to the set temperature T1 set by the temperature adjustment volume 7.

[0035] By the way, as described above, and as the human experience has been warm for a long time even in the same temperature, from to come slowly feeling the heat Me, period t ₂ after a certain period of time t ₁ garden The amount of heat generated by the heater 9 is continuously controlled so as to lower the surface temperature by 1 to 2 ° C. The decrease of the surface temperature by 1 to 2 ° C. is started by the microcomputer 6 in response to the control signal S2 given from the energy saving switch 11. Further, since the period t ₂ to lower the temperature is set sufficiently longer than the period t _1, it can be implemented without experience this temperature drops to people in on the carpet.

As described above, since the surface temperature is controlled to be lower by 1 to 2 ° C. than the set temperature T 1, it is possible to reduce the power consumption of the electric carpet and save energy, and Since the temperature drop of 1 to 2 ° C. is gradually performed over a long period of time, a person on the carpet does not feel physically uncomfortable.

The details of the method of performing the temperature control will be described below. FIG. 3 is a schematic processing flowchart of a control operation including an operation of reducing the power consumption of the temperature control device shown in FIG. This processing flow is stored in advance in the memory 62 of the microcomputer 6 as a program, and is repeatedly executed at a constant period over the power-on period under the control of the CPU 61. Note that the CPU 61 starts executing this processing in response to the power switch 2 being turned “ON”, but when the power switch 2 is turned “OFF”, the series of processes is forcibly terminated.

First, the power switch 2 of the electric carbet is set to the “ON” state by the user in the same manner as in the prior art, and the temperature adjustment volume 7 is operated in parallel to set the desired surface temperature. . The AC voltage supplied from the applied power source 1 in response to the power switch 2 being turned “ON” is converted into a DC voltage of a predetermined level via the transformer 3 and the rectifier network 4 to obtain a micro-computer signal. Then, the current is supplied to the gate voltage application circuit 5 to start energization.

Now, the CPU 61 of the microcomputer 6 executes the processing of steps S 10 to S 41 in the same manner as in the prior art, so that the detected temperature T 2 of the electric carpet, which is detected via the heat sensitive part 10, is currently desired. The temperature is raised to the set temperature T1. When (detected temperature T2 = set temperature T1) is established in step S40 in this way, and it is determined that the detected temperature T2 has been stabilized, the process proceeds to the next step S42. In step S42, whether or not the energy saving switch 11 is in the "ON" state is determined based on the signal level of the switching signal S2. For example, if the energy saving switch 11 is set to the "ON" state, the switching signal S2 is set to the signal level "HIGH". Conversely, if the energy saving switch 11 is set to the "OFF" state, the switching signal S2 is set. Is set to the signal level “LOW” and given to the CPU 61.

Therefore, if the signal level of the switching signal S2 is "HIGH", the process branches to step S43 and later, which will be described later. If the signal level is "LOW", the process branches to step S50. In the process of step S50, a control signal S1 for maintaining the current detected temperature T2 of the carpet stably is output in the same manner as in the related art, and the amount of heat generated by the heater 9 is adjusted via the triac 8 accordingly. You. Thereafter, in step S60, it is determined whether the power switch 2 is in the "OFF" state. That is, when the power switch 2 is set to the "OFF" state, the power supply to the microcomputer 6 is stopped, and a series of processing is forcibly terminated accordingly. The process returns to S45 (described later).

Now, in step S42, when the energy saving switch 11 is in the “ON” state and the switching signal S2 is given to the CPU 61 as the signal level “HIGH”, the processing proceeds to step S43 and thereafter. Branch to In the processing after step S43, processing is performed so as to reduce the power consumption by the temperature control as shown in FIG.

First, in step S 43, the elapsed time of the period t ₁ is measured by a counter function built in the CPU 61. At the same time, the control signal S1 is output to stably maintain the current surface temperature, that is, the steep temperature T2 at the set temperature T1. Next, when the elapsed time of the period t ₁ is measured, the CPU 61 measures the elapsed time of the period t ₂ (t ₂ > t ₁ ) in the next step S44 in the same manner as described above. Shaving is performed so as to lower the detection temperature T2 by 1 to 2 ° C. In other words, the control signal S1 shortens the conduction period of the triac 8 so that the calorific value of the heater 9 decreases the average of the surface temperature of the carpet at a rate of (1 to 2 ° C./t ₂ ). Is set and output.

The rate of this temperature decrease is determined by the fact that the surface of the carpet (one tatami mat, two tatami mats, three tatami mats, etc.) is fixed and the length of the heater 9 is fixed. The amount, ie, the shortening rate of the conduction period of the triac 8, can be determined. The shortening ratio of the conduction period can be adjusted by variably setting the oscillation cycle of the trigger pulse GP based on the control signal S1.

Thereafter, when the period t ₂ elapses and the surface temperature decreases by 1 to 2 ° C., the process proceeds to step S45. In step S45, it is determined whether or not a new temperature T1 has been set by the user operating the temperature adjustment volume 7. This determination process is performed by a comparison process with the previous set temperature T1 stored in the memory 62. As a result of this comparison, if it is determined that a new temperature T1 has been set, the processing from step S10 is repeated again through the processing in step S41 described above. On the other hand, if the new temperature T1 has not been set, the processing from step S50 described above is executed until the power switch 2 is turned "OFF".

As described above, in the electric carpet provided with the temperature control device, the power consumption can be reduced by about 25 W by reducing the temperature by 1.5 to 2 ° C. Also, as an alternative to the manual operation of the energy saving switch 11 shown in FIG. 1, the presence of a person on the carpet is detected by a pressure-sensitive conductive rubber sensor or a piezoelectric sensor, and the detection result is received. The energy saving switch 11 may be automatically set to the "ON" state (this may be performed by a program processing to set the energy saving switch 11 to the "ON" state with a certain delay after the sensor detection).

Further, the temperature control including the above-described energy saving function is not specified by the phase control method.

[0047]

[Effect of the invention]

 As described above, according to the present invention, it is possible to reduce the power consumption by lowering the temperature of the controlled object, which is stable at the desired temperature, by a predetermined temperature without experiencing it. Therefore, there is an effect that energy can be saved.

[Submission date] July 9, 1998

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

[0008] Temperature control system for electric carpet numeral is supplied from the commercial power supply 1 by the AC power supply commercial power source 1 for supplying a power supply switch 2, the power switch 2 is turned "ON" state It includes a transformer 3 for transforming (in this case, stepping down) an AC voltage, and a rectifier network 4 for receiving an AC voltage supplied through the transformer 3, rectifying the whole wave, converting the DC voltage into a DC voltage, and outputting the DC voltage. Further, the temperature control device includes a gate voltage application circuit 5, a microcomputer 6, a temperature adjustment volume 7, a triac (bidirectional three-pole thyristor) 8, a heater 9 serving as a heating wire, and a heat-sensing device for detecting the amount of heat generated by the heater 9. Unit 10, including a reactor L1 and capacitors C1 to C3.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0024

[Correction method] Change

[Correction contents]

[0024] Thereafter, in step S60, whether the power switch 2 is set to "OFF" state is determined. Because when the power switch 2 is "OFF" the power supply to the micro computer 6 itself is stopped, the series of processing by the CPU61 is terminated in forced. If the power switch 2 is not "OFF" and continues to be in the "ON" state, the process returns to step S10 again and the subsequent processing is repeated in the same manner.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0028

[Correction method] Change

[Correction contents]

[0028]

[Means for Solving the Problems]

The temperature control device according to the present invention is a temperature control device for controlling a temperature associated with the heat generation of the heating element , wherein the temperature control apparatus controls the temperature of the heating element for a predetermined period immediately after the start of power supply by the power supply unit to the heating element. Control means for controlling the power supply of the heater to control the temperature accompanying the heat generation of the heating element to a predetermined set temperature; and changing the set temperature set by the first control means to a temperature after the predetermined period has elapsed. constructed and a second control means for controlling the heating value of the heating element by controlling the power supply to the heating element in order to vary less in a range that does not experience.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0029

[Correction method] Change

[Correction contents]

[0029] Since the temperature control device according to the present invention is constructed as described above, alters lower the first control hand cassette setting temperature set by a range which does not feel the temperature change after the predetermined period of time Thus, the amount of heat generated, that is, the amount of power consumed by the heat generating element can be reduced.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0041

[Correction method] Change

[Correction contents]

[0041] Now, I return to the process of step S42 described above is in the energy saving switch 11 is "ON" state, the switching signal S2 is given to the CPU61 as the signal level "HIGH" depending, processing step S43 and subsequent Branch to In the processing after step S43, processing is performed so as to reduce the power consumption by the temperature control as shown in FIG.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0042

[Correction method] Change

[Correction contents]

First, in step S 43, the elapsed time of the period t ₁ is measured by a counter function built in the CPU 61. Parallel current surface temperature by outputting a control signal S1, i.e. stabilized maintain the detection temperature T2 at a set temperature T1. Next, when the elapsed time of the period t ₁ is measured, the CPU 61 measures the elapsed time of the period t ₂ (t ₂ > t ₁ ) in the next step S44 in the same manner as described above. to control such that the detected temperature T2 lower 1 to 2 ° C.. In other words, the control signal S1 shortens the conduction period of the triac 8 so that the calorific value of the heater 9 decreases the average of the surface temperature of the carpet at a rate of (1 to 2 ° C./t ₂ ). Is set and output.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0047

[Correction method] Change

[Correction contents]

[0047]

[Effect of the invention]

As described above, according to the present invention, it is possible to reduce the power consumption by lowering the temperature of the controlled object, which is stable at the desired temperature, by a predetermined temperature without experiencing it. Therefore, there is an effect that energy saving can be achieved.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a functional configuration of a temperature control device of an electric carpet, which can control a heat generation amount by a phase control method according to an embodiment of the present invention and save energy.

FIG. 2 is a diagram for explaining a state of surface temperature shift due to a power consumption reduction effect of the temperature control device shown in FIG. 1;

FIG. 3 is a schematic processing flowchart of a control operation including an operation of reducing the power consumption of the temperature control device shown in FIG. 1;

FIG. 4 is a schematic diagram showing a functional configuration of a temperature control device for an electric carpet that controls a heat generation amount by a conventional phase control method.

FIG. 5 is a schematic processing flowchart showing a control operation of the temperature control device shown in FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Commercial power supply 2 Power switch 3 Transformer 4 Rectifier network 5 Gate voltage application circuit 6 Microcomputer 7 Temperature control volume 8 Triac 9 Heater 10 Heat sensitive part T1 Set temperature T2 Detected temperature S1 Control signal S2 Switching signal GP Trigger pulse Rv Heat sensitive resistance

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[Procedure amendment]

[Submission date] July 9, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims for utility model registration

[Correction method] Change

[Correction contents]

[Utility model registration claims]

Claims (1)

[Utility model registration claims] 1. A temperature control device for controlling a temperature associated with heat generation of a heating element, comprising: a power supply means; a temperature setting means for setting a temperature associated with the heat generation of the heating element to a desired temperature; Temperature detecting means for detecting a temperature associated with heat generation of
A first control unit for controlling a heating value of the heating element in order to set a temperature detected by the temperature detection unit to a temperature set by the temperature setting unit over a first period immediately after the power supply by the power supply unit is started. And controlling the amount of heat generated by the heating element so as to lower the detected temperature controlled by the first control means within a range in which a temperature change is not felt, over a second period immediately after the first period. A temperature control device comprising: a second control unit.