JPH05313758A - Temperature controller - Google Patents

Abstract

PURPOSE:To provide the temperature controller which is not affected by characteristics of used electric parts and controls the temperature of a heat generating load in the temperature control level, which is determined by a temperature set level and a room temperature level, with a high precision. CONSTITUTION:A control circuit part 14 stores a table for determination of the temperature control level in an incorporated memory. The control circuit part 14 reads out the temperature control level written in the table in accordance with a set temperature and a settled room temperature. Relay contacts 18A and 18B are opened/closed based on this temperature control level to control the power supply to heat generating loads 11A and 11B so that the detection temperature of temperature detecting parts 21A and 21B coincides with the temperature control level.

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 used for heating electric heating panels and the like.

[0002]

2. Description of the Related Art Conventionally, a temperature control device used for a heating electric heating panel or the like has a setting means for setting a temperature by an operation amount such as a slide volume, and the temperature control level of a heating load changes according to a room temperature level to control the temperature. There was something to do.

[0003]

In the conventional example in which the temperature is set by the operation amount such as the slide volume as described above,
Due to the temperature characteristics of the temperature detector attached to the heating load and the sliding characteristics of the slide volume, it is difficult to control the temperature of the heating load according to the expected room temperature level in all temperature setting areas.

The present invention has been made in view of the above problems, and the object of the invention of claim 1 is not affected by the characteristics of the electric parts to be used, and can be set at a temperature setting level and a room temperature level. An object of the present invention is to provide a temperature control device capable of accurately controlling the temperature of a heat generation load at a fixed temperature control level. An object of the invention of claim 2 is to provide a temperature control device capable of switching the temperature control level depending on the difference in the usage condition of the heat generation load and the like.

[0005]

In order to achieve the above object, the invention of claim 1 turns on / off the energization of a room temperature detector for detecting an indoor temperature, a heating load and a switchgear for opening / closing the heating load. Output section, a temperature detecting section for detecting the temperature of the heat generating load, setting means for setting the temperature, a table of temperature control levels for determining the temperature of the heat generating load by the temperature setting level and the room temperature level, and setting by the setting means. The control unit controls the output unit so that the temperature of the heat generation load is brought to the temperature control level read from the table based on the temperature setting level thus detected and the room temperature level detected by the room temperature detecting unit.

According to a second aspect of the present invention, in the first aspect of the present invention, the table is provided for changing the temperature control level determined by the temperature setting level and the room temperature level by operating a changeover switch.

[0007]

According to the present invention, since the temperature control level is determined by the table, the characteristic of the means for setting the temperature does not affect the determination of the temperature control level, and therefore the temperature control of the heating load is performed. Can be performed accurately. Further, if a table for changing the temperature control level determined by the temperature setting level and the room temperature level by operating the changeover switch is provided, the temperature control level can be determined by selecting the table according to the usage condition of the heat generation load. It becomes possible to perform appropriate temperature control according to the usage conditions of the heat load.

[0008]

EXAMPLES The present invention will be described below with reference to examples. In this embodiment, as shown in FIGS. 3A to 3C, the apparatus main body 1 is embedded in the embedded hole of the wall W or the switch box by using the mounting frame 2. On the front, a liquid crystal display 4 and a key switch K ₁ for operation
, And the display light emitting diodes LED _{1 to} LED _{4 and the} like are arranged, and each display can be visually recognized on the front surface of the apparatus main body 1,
Further, a front panel 3 provided with a transparent window and an operating portion is attached so that key switches can be operated. Further, as shown in FIG. 4, a plate frame 7 mounted around the front panel 3
As shown in FIG. 4, a room temperature detecting section including a temperature detecting element such as a thermistor is provided on the side of the apparatus main body 1 facing the space surrounded by the side edge of the front panel 3 and the frame piece of the mounting frame 2. An accommodating portion 1a for accommodating 5 is formed to be bulged, and a communication port 6 communicating with the inside of the accommodating portion 1a is provided on the outer surface of the accommodating portion 1a. Flows into the storage portion 1a and touches the room temperature detection portion 5.

As shown in FIG. 5, the room temperature detector 5 is attached to the printed circuit board 8 so as to float on the printed circuit board 8 via a lead wire in order to reduce the influence of heat conduction from the printed circuit board 8. The storage portion 1a facing the inside of the main body 1
The storage unit 1a is accommodated in the storage unit 1a through the opening, and the opening of the storage unit 1a is closed by the heat insulating material 26 to avoid the influence of the temperature in the apparatus main body 1. Further, the printed circuit board 8 has a heat insulating material 2 with respect to the device body 1 in order to prevent the printed circuit board 8 from being affected by convective heat in the device body 1 when there is a gap between the printed circuit board 8 and the device body 1.
It is fixed through 6.

In addition to the printed circuit board 8, two printed circuit boards 9 and 10 are housed in the apparatus body 1. The printed circuit board 8 has a key switch K ₁ ... Device 4, LED for display LED ₁
-LED ₄ and circuit parts such as a control unit are mounted, printed circuit board 9 is provided with power supply circuit parts, and printed circuit board 10 is provided.
The circuit components of the output section system are mounted on the respective. The printed circuit board 10 is detachably connected to the printed circuit board 9 by a connecting wire (not shown) and a connector (not shown) so that the output section can be easily replaced.

On the back surface of the apparatus main body 1, for connecting terminals for connecting an AC power supply AC, terminals for connecting a load such as a heating load to be controlled, and a room temperature detecting section 22 to be described later provided outside the apparatus. The connection terminal of and the connection terminal for tele control are provided by the quick connection terminal. The entire circuit of the present embodiment is configured as shown in FIG. 1, and the illustrated embodiment of the device directly controls the energization of the heat generating loads 11A and 11B of the two electric heating panels. By operating the area switching key K ₈ provided, the heating area by the heat generating loads 11A and 11B is changed to the heat generating load 11
The areas A and 11B, the heating load 11A area, and the heating load 11B area can be cyclically switched in this order.

In the circuit of the power supply system mounted on the printed circuit board 9, the primary side is connected to the AC power supply AC when the power switch SW is turned on, and a step-down transformer Tr for stepping down the AC power supply voltage to a predetermined voltage and this step-down transformer Tr. The rectifier circuit DB that rectifies the voltage that is stepped down by, the power supply circuit 13 that is the relay power supply for the relay drive circuits 12A and 12B by rectifying and smoothing this rectified voltage, and the output voltage of this power supply circuit 13 is further stepped down. After smoothing to obtain a constant DC voltage,
A power supply circuit 1 that supplies power to a control circuit unit 14 and the like described later.
5 and a backup power supply circuit 16 that charges the backup power supply with the output from the rectifier circuit DB.

As shown in FIG. 2, the power supply circuit 13 is composed of a rectifying / smoothing circuit including a diode D ₁ and a capacitor C ₁ , and includes a relay exciting coil Ry and a driving transistor Q in the relay drive circuits 12A and 12B. An output voltage is applied to the series circuit so that the exciting current of the exciting coil Ry flows when the driving transistor Q is turned on.

The power supply circuit 15 is composed of a step-down resistor R ₁ , a capacitor C ₂ , and a zener diode ZD _1. The output voltage of the power supply circuit 13 is stepped down to the zener voltage of the zener diode ZD ₁ , and the obtained DC voltage is supplied to the power supply. Is supplied to the control circuit section 14 via the switching diode D ₂ . Further, the backup power supply circuit 16
Is a large-capacity capacitor C for a backup power supply via the diode D ₃ and the step-down resistor R ₂ to the rectified output of the rectifier circuit DB.
₃ is charged, the voltage of the large-capacity capacitor C ₃ for backup power supply is stepped down to the Zener voltage of the Zener diode ZD ₁ , and the stepped down voltage is supplied to the control circuit unit 14 via the switching diode D ₄ as the backup power supply. And the switching diode D
Reference numeral ₄ constitutes a diode OR together with the switching diode D ₂ . Here, the reason why the power source for charging the large-capacity capacitor C ₃ for backup power source is independent is that when the large-capacity capacitor C ₃ for backup power source is temporarily charged by the output of the power supply circuit 15, it is charged to a predetermined voltage. This is because it takes a considerable amount of time to delay the rise of the power supply voltage of the control circuit unit 14 considerably.

The temperature fuse TF inserted between the step-down transformer Tr and the power switch SW is blown when the temperature inside the apparatus body 1 rises above a predetermined temperature due to some influence, so that the power source of the entire apparatus is shut off. belongs to. The reset circuit 17 is for starting the control circuit unit 14 when the power supply voltage supplied to the control circuit unit 14 including a CPU or the like reaches a normal operating voltage, and the reset switch SW ₁ is for the control circuit unit 14 Is for resetting and restarting the control circuit unit 14 when it runs away due to some influence, and is mounted on the back side of the front panel 3.
The front panel 3 is removed for operation.

The relay drive circuits 12A and 12B receive a signal from the output port of the control circuit section 14 to turn on / off the corresponding relays, and the relay contact 18 of each relay.
A / 18B is turned on / off, and this relay contact 18A, 1
The energization of the heating loads 11A and 11B is directly controlled by turning on / off 8B. The control circuit unit 14 controls the energization of the heating load under the control conditions of room temperature and set temperature,
The control circuit unit 14 is provided with a plurality of types of control programs so as to handle a plurality of types of heat generation loads, and a 2-bit select switch (not shown) of the model selection circuit 19 corresponds to a heat generation load to be controlled. A control program can be selected.

In other words, the temperature control level is determined by adopting the set temperature and the room temperature as the control conditions, and the heat generation load 11 composed of the heat generation panel as shown in FIG.
When using A and 11B, temperature detecting elements 21A and 2
A control program for controlling the detected temperature of 1B is selectively set, and in the case of a heating load such as an indoor air conditioner / heater described later, the temperature detecting element is not used and the room temperature is controlled to reach the temperature control level. Select and set the control program to be used. When the temperature detecting elements 21A and 21B are used, the temperature detecting element 2 is added to the signal that can be input to the control circuit unit 14.
The detection signals of 1A and 21B are transmitted to the floor temperature sensor circuits 30A and 30
It is designed to be converted by B.

Regarding the room temperature, the temperature detection signal of the room temperature detection unit 22 outside the apparatus connected to the connection terminal 20 or the built-in room temperature detection unit 5 is taken into the control circuit unit 14 via the room temperature detection unit switching circuit 23. It has become. Switching of the room temperature detection switching circuit 23 is performed by the key switch matrix 25.
This is done by operating the switching key K ₉ connected to. Since the temperature detected by the room temperature detector 5 is affected by the internal temperature of the apparatus body 1, the control circuit unit 14 sets the detected temperature value to the temperature inside the apparatus body 1 when using the room temperature detector 5. Therefore, the internal temperature detection unit 24 including a temperature detection element such as a thermistor for detecting the internal temperature is provided inside the main body 1 of the apparatus.

The internal temperature detecting section 24 is a relay drive circuit 12 which constitutes an output section in the apparatus body 1 which generates a large amount of heat.
In the vicinity of A and 12B, for example, as shown in FIG. 6, the lower surface of the printed circuit board 9 adjacent to the printed circuit board 10 of the output section is mounted and arranged so as to be covered with a material 27 having a large heat capacity. The reason for disposing the internal temperature detecting section 24 in the vicinity of the output section so as to cover it with the material 27 having a large heat capacity is as follows.

That is, the relay contacts 18A, 18 of the output section
This is because the temperature change according to the magnitude of the load current flowing through B can be detected with high sensitivity, and the responsiveness to the on / off of the output part is slightly damped, and the detected temperature is averaged. The correction of the temperature detected by the room temperature detection unit 5 performed by the control circuit unit 14 is based on the following equation. RT = RT ₁ −X [(RT ₂ −Y) − (RT ₁ −X)] × α where RT is the temperature that the apparatus determines as room temperature, and R
T ₁ is the temperature detected by the room temperature detector 5, X is the temperature rise from the actual room temperature in the temperature detected by the room temperature detector 5 under no load (the temperature rise caused by the functioning of the device), and RT ₂ is The temperature detected by the internal temperature detection unit 24, Y is the temperature increase from the actual internal temperature in the detection temperature of the internal temperature detection unit 24 when there is no load (the specific temperature increase for the device to function), and α is the correction coefficient. Are shown respectively. RT ₂ -Y is the temperature rise in the temperature detected by the internal temperature detector 24 due to the load current, RT ₁
-X means the amount of temperature rise in the temperature detected by the room temperature detector 5 due to the load current.

Then, the control circuit section 24 corrects the temperature detected by the room temperature detecting section 5 based on the temperature detected by the internal temperature detecting section 24 by the above equation to correct the detected temperature of the room temperature detecting section 5 and the temperature inside the apparatus main body 1. The precise room temperature, which eliminates the influence of, is used as one of the control conditions. Of course, when the room temperature detection unit 22 outside the device is used, the internal temperature is not corrected.

The means for setting the room temperature or the heating temperature of the floor is composed of a temperature setting down key K ₅ and a temperature setting up key K ₆ connected to the key switch matrix 26. These keys K ₅ , K ₆ By operating the button, the lighting of the scale of the temperature setting scale display section 4A of the liquid crystal display 4 shown in FIG. 8 is raised or lowered, and the set temperature data can be given to the control circuit section 14. The control circuit unit 14 determines the temperature control level based on the set temperature data and the room temperature, and based on the temperature control level, the heating load 11A,
While feeding back the temperature detected by the temperature detecting elements 21A, 21B of 11B, the relay drive circuits 12A, 1
The relay contacts 18A and 18B of the relay are turned on / off through 2B to control the energization of the heat generating loads 11A and 11B so that the temperatures of the heat generating loads 11A and 11B are stabilized at the temperature control level.

Here, the control circuit unit 14 stores a table for determining the temperature control level in the built-in memory, and the control circuit unit 14 stores the temperature written in the table based on the set temperature and the determined room temperature. The control level is read, and the heating load 11 is read based on the temperature control level.
The energization of A and 11B is controlled. The table can be selected by the power adjustment selection circuit 28. In other words, according to the 2-bit signal of the power adjustment select switches K ₁₀ and K ₁₁ provided corresponding to the power adjustment select circuit 28, for example, "1""1" is standard, and "1""0" is standard. If the power-up is “0” or “1”, a table having a temperature control range corresponding to each power mode of power-down can be selected. As shown in FIG. 7, the power adjustment select switches K ₁₀ and K ₁₁ are provided with an operating portion on the front surface of the apparatus main body 1 which is located on the back side of the front surface panel 3, and like the reset switch SW ₁ , the front surface panel 3 is opened. Remove and operate.

The standard table selected here is constructed as shown in Table 1, and the tables corresponding to power-down and power-up are constructed as shown in Tables 2 and 3, respectively. The left vertical column in each table shows the 10-step scale for temperature setting, and the upper horizontal column shows the room temperature level. The temperature setting can be set from 1 to 10 levels, and the room temperature is A or higher. It is divided into 7 stages from to G or less.
Then, the control circuit unit 14 determines the temperature in the column where the set level of the set temperature and the confirmed room temperature level intersect as the temperature control level. The room temperature level is A>B>
There is a relation of C>D>E>F> G, and the room temperature is higher as it approaches the level of A, and the room temperature is lower as it approaches the level of G.
"← A" indicates that the level is A or higher, and "G →" indicates that the level is G or lower.

[0025]

[Table 1]

[0026]

[Table 2]

[0027]

[Table 3]

In addition to the above temperature setting scale display section 4A, the liquid crystal display 4 includes a room temperature display section 4B for displaying room temperature as shown in FIG. 8, a timer set time zone display section 4C for a timer function described later, and a timer operation. A time name display section 4F is provided to indicate whether the display section 4D, the time display section 4E, or the time display section 4E displays the current time or the timer time. The room temperature display unit 4B displays the detected temperature of the room temperature detection unit 5 incorporated in the control circuit unit 14 and the room temperature detected by the above correction or the room temperature detection unit 22 outside the apparatus, and the time display unit 4E displays the detected temperature. The display is controlled by the clock function and the timer function of the control circuit unit 14 that counts and measures the clock clock output from the clock clock oscillation circuit 29, and displays the current time and the timer time.

The current time and the timer time can be set by operating the set / confirmation key K ₄ , the hour key K ₂ , and the minute key K ₃ , and the cancel key K ₁ can be used to cancel. There is. The timer function is to turn on / off the heater at the desired time, and set / confirm key K
_4, the time key K _2, partial key K ₃ enter the three pairs by operating in a predetermined procedure, can set the time of switching, for example, first "ON" time when setting the timer operation display section 4
The letters "1" and "ON" light up at D. When setting the first "off" time, the timer operation display section 4D
The letters "1" and "OFF" will light up. After that, when setting the second "ON" time, the characters "2" and "ON" are set, and when setting the second "OFF" time, it is "2" and "
The character "OFF" lights up, and when the third "ON" time is set, the character "3" and "ON" is displayed when the third "OFF" time is set. The character “” lights up. When this timer time is set, the time name display section 4F indicates that the time display section 4E displays the timer time. Of course, when the timer time setting is completed, the display of the time name display section 4F changes to the current time, and the display of the time display section 4E also changes to the current time. Then, the contents of the set timer time are displayed on an hourly basis in the timer set time zone display portion 4C. The set timer time can be confirmed by operating the set / confirm key K ₄ , and the set content can be canceled by operating the cancel key K ₁ .

Switching between the timer operation by the timer function and the manual operation can be performed by operating the operation key K ₇ , and the control circuit unit 14 operates the operation key K ₇ to control the states of manual operation, timer operation and operation stop. The section 14 sequentially switches and sets. However, when the timer time is not set,
Operation stop and manual operation are set alternately. The manual operation state is displayed by the light emitting diode LED ₁ provided in the LED matrix circuit 35 under the control of the control circuit unit 14, and the timer operation state is displayed by the light emitting diode LED ₂ provided in the LED matrix circuit 35.

In the LED matrix circuit 35, in addition to the above-mentioned light emitting diodes LED ₁ and LED ₂ , light emitting diodes LED ₃ and LED ₄ for area display are connected. When the heating area is switched by operating the area switching key K ₈ , Under the control of the control circuit unit 14, the light emitting diodes LED ₃ and LED ₄ corresponding to the heat generating loads 11A and 11B used according to the switching of the heating area are turned on.

In addition to the above-mentioned manual operation and timer operation, the apparatus of this embodiment is capable of performing telecontrol using a telephone line. Therefore, a signal is exchanged between the telephone 31 outside the apparatus and the control circuit section 14. A telecon switch unit 32 for performing the operation, an interface unit 33,
And a teleconverter input / output circuit 34. The method of utilizing this telecontrol is as follows. That is, when a predetermined signal is given from the telephone 31 to the teleconverter switch unit 32 in the operation stop state, the teleconverter switch unit 32 outputs a pulse signal for a predetermined time as an operation control signal to the interface unit 33 and the teleconverter input / output circuit 34. It can be given to the control circuit section 14 via the control circuit 14 and set to the operating state. At this time, a signal indicating that the operating state has been entered from the control circuit section 14 is given to the teleconverter switch section 32 via the teleconverter input / output circuit 34 and the interface unit 33, and the teleconverter switch section 32 causes the telephone 3
It notifies 1 that the predetermined operating state has been entered.

Next, when a predetermined signal is applied from the telephone 31 to the teleconverter switch section 32 in the operating state, the teleconverter switch section 32 uses a pulse signal for a predetermined time as an operation control signal and the interface unit 33 and the teleconverter input / output circuit. It can be given to the control circuit unit 14 via the control unit 34 and can be set to the operation stop state. At this time, the control circuit unit 1
A signal indicating that the vehicle has entered the operating state from 4 is given to the teleconverter switch section 32 via the teleconverter input / output circuit 34 and the interface unit 33, and the teleconverter switch section 32 enters a predetermined operation stop state for the telephone 31. Notify you of that.

During the timer operation, the operation stop state can be set by the telecontrol operation, and when the operation state is set again by the telecontrol operation in this operation stop state, the operation mode is switched from the timer operation to the manual operation mode. In FIG. 1, reference numeral 36 is a main clock oscillation circuit that creates a reference clock for the control circuit unit 14, 37 is a buzzer drive circuit, and under the control of the control circuit unit 14, the key switches K ₁ to so that the cause Hatsuna the buzzer sound at the time of operation of the K _9.

In the apparatus of this embodiment, when the control circuit section 14 controls the energization of the heat generating loads 11A and 11B under the control conditions of the set temperature and the room temperature, the control circuit section 14 is controlled by the internal temperature detecting section 24. The detected temperature of the room temperature detection unit 5 is corrected by the above-described formula based on the detected temperature of 1, and the corrected room temperature is used as a control condition to generate the heat load 1.
The temperature control levels of 1A and 11B can be controlled accurately.

During operation, the internal temperature detector 2
When the detected temperature of No. 4 reaches a preset temperature, the control circuit unit 14 judges that the output unit is abnormally heated due to overload or incomplete load connection, and the relay drive circuit 12
Relay contacts 18A, 18 of each relay through A, 12B
B is turned off, and the power supply to the heat generating loads 11A and 11B is turned off. This off state is maintained until the control circuit unit 14 is reset, which enhances safety.

As a countermeasure against the runaway of the control circuit section 14, the apparatus of this embodiment is provided with a runaway monitoring processing circuit 38. The runaway monitoring processing circuit 38 receives the alternating waveform output from the control circuit section 14. , Even though this alternating waveform is in operation, it is determined that the control circuit unit 14 has gone out of control when it cannot enter from the control circuit unit 14, and the relay contact 1 of each relay is passed through each relay drive circuit 12A, 12B.
8A and 18B are forcibly turned off, and heat generation loads 11A and 1
The power to 1B is turned off.

As a measure against power failure, the apparatus of this embodiment is provided with a power supply voltage monitor circuit 39. This power supply voltage monitor circuit 39 inputs and monitors the output voltage of the rectifier circuit DB. A power failure detection signal is given to the control circuit unit 14 when it is lost. When the power failure detection signal is input, the control circuit section 14 extends the time during which the power of the backup power supply circuit 16 can back up the memory and the like in the control circuit section 14 through the relay drive circuits 12A and 12B. 1
While turning off 8A and 18B, the liquid crystal display 4,
Each light emitting diode LED _{1 to} L of the LED matrix 35
Turn off ED ₄ to reduce power consumption.

By the way, in the embodiment circuit shown in FIG. 1, the two heating loads 11A and 11B are connected to the relay contacts 18A and 18B.
B is connected to the AC power supply AC via each of them, and each heating load 11
The energization of A and 11B is controlled by cutting into one side, but as shown in FIG. 9, both ends of a heating load 11 such as one electric heating panel are connected to an AC power source AC through relay contacts 18A and 18B, respectively. However, it can also be used so as to control energization by double-cutting.

In FIG. 9, reference numeral 21 is a temperature detecting element of the heating element 11, and 40 is a circuit of the entire temperature control device. When controlling a large-capacity heat load, the heat load is not directly controlled by using the relay contacts 18A and 18B, but via the open / close contacts 42A and 42B of the large-capacity switchgear 41 as shown in FIG. AC power supply AC
And the drive unit 4 of the switching contacts 42A, 42B.
3 is connected to the AC power supply AC via the relay contacts 18A and 18B, and the drive unit 43 is controlled by the relay contacts 18A and 18B, so that the energization of the heating load 11 is controlled by the opening / closing contacts 42A and 42B. Is also good. In this case, the internal temperature of the apparatus body 1 is increased by the load current to the drive unit 43.

[0041]

According to the first aspect of the present invention, the room temperature detecting section for detecting the indoor temperature, the heating section and the output section for turning on / off the energization of the switching device for opening / closing the heating load, and the temperature for detecting the temperature of the heating load. Detection section, setting means for setting the temperature, temperature control level table that determines the temperature of the heating load by the temperature setting level and the room temperature level, the temperature setting level set by the setting means and the room temperature detected by the room temperature detecting section The temperature control level can be determined by the table because the control means for controlling the output unit so that the temperature of the heating load is brought to the temperature control level read from the table based on the level and the temperature setting level can be determined. There is an effect that the temperature control of the heating load can be accurately performed without the characteristics of the performing means affecting the determination of the temperature control level.

The invention according to claim 2 is provided with the table for changing the temperature control level determined by the temperature setting level and the room temperature level by operating the changeover switch. Therefore, the table according to the usage condition of the heat generation load is provided. Since the temperature control level can be selected and determined, there is an effect that it is possible to perform appropriate temperature control according to usage conditions.

[Brief description of drawings]

FIG. 1 is a circuit configuration diagram of an embodiment of the present invention.

FIG. 2 is a specific circuit diagram of the above power supply system.

FIG. 3A is a front view of the same decorative plate removed. (B) is sectional drawing in the state attached to the wall same as the above. (C) is a side view of the same decorative plate removed.

FIG. 4 is a partially cutaway perspective view of an essential part of the above.

FIG. 5 is a cross-sectional view of a main part of the above.

FIG. 6 is a cross-sectional view showing a mounted state of the internal temperature detection unit of the above.

FIG. 7 is a partially cutaway front view of the above.

FIG. 8 is a front view of the above liquid crystal display.

[Fig. 9] Fig. 9 is a configuration example diagram of another heating system of the above.

FIG. 10 is a diagram showing a configuration example of another heating system of the above.

[Explanation of symbols]

 11A, 11B heating load 14 control circuit section 18A, 18B relay contact 21A, 21B temperature detection section

Claims (2)

[Claims] 1. A room temperature detecting section for detecting an indoor temperature, an output section for turning on / off a heat load and a switch for opening / closing the heat load, and a temperature detecting section for detecting a temperature of the heat load.
Based on the setting means for setting the temperature, a table of temperature control levels for determining the temperature of the heating load by the temperature setting level and the room temperature level, and the temperature setting level set by the setting means and the room temperature level detected by the room temperature detecting unit. And a control means for controlling the output unit so that the temperature of the heat generation load is brought to the temperature control level read from the table. 2. The table according to claim 1, further comprising a table for changing the temperature control level determined by a temperature setting level and a room temperature level by operating a changeover switch.
The temperature control device described.