JPH025254Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to an air conditioner such as a heating device or a cooling device that can perform room temperature control operation according to a set temperature, and can perform weak or strong operation regardless of the room temperature condition.

[Technical background of the invention and its problems] Conventionally, for example, an operating volume for setting the room temperature is provided, and a continuous weak setting position is provided on the lowest temperature setting side of the operating volume, a continuous strong setting position is provided on the highest temperature setting side, and A room temperature detection element is installed to detect the room temperature, and when the temperature detected by the room temperature detection element becomes higher than the allowable range of temperature set by the operation volume, the operation is stopped, and then the temperature exceeds the allowable range of temperature set by the operation volume. In a heating system that restarts operation when the temperature detected by the room temperature detection element becomes low, if the operation volume, which is at a predetermined setting position, is operated to set the continuous low position during combustion operation, the temperature detected by the room temperature detection element will drop. A phenomenon occurs in which the temperature becomes higher than the allowable range of the set temperature, and the combustion operation is therefore stopped.As a result, the operation volume must be set to the continuous low setting position to restart the combustion operation, and the operation is interrupted. In addition to being troublesome, there was also the annoyance of having to wait a certain amount of time before starting the reburning operation due to post-purge operation (venting gas and cooling the combustion chamber).

[Purpose of the invention] This invention was made in order to solve such problems, and even if the detected temperature of the room temperature detection element exceeds the allowable range of the temperature set by the operation volume when the operation volume is operated, It is an object of the present invention to provide an air conditioner that has excellent operability and does not stop its operation.

[Summary of the invention] This invention provides an operating volume for setting the room temperature, a continuous weak setting position on the lowest temperature setting side of the operating volume, and a continuous strong setting position on the highest temperature setting side, and a room temperature control for detecting the room temperature. A detection element is installed, and the operation is stopped when the temperature detected by the room temperature detection element becomes higher than the permissible temperature range set by the operation volume, and then the room temperature detection element detects a temperature higher than the permissible temperature range set by the operation volume. In an air conditioner that resumes operation when the temperature at which the temperature is lowered drops, there is provided a means for detecting a change in the set temperature of an operation volume, and a timer that counts a predetermined time when a change in the set temperature is detected by the means. and a means for prohibiting a comparison between the temperature set by the operation volume and the temperature detected by the room temperature detection element when the timer counts the time.

Therefore, even if the operating volume is moved to the continuous low setting position and the temperature detected by the room temperature detection element is temporarily higher than the allowable temperature range set by the operating volume, both temperatures at that time will be This does not stop the operation since comparisons of are prohibited. After the operation volume is moved to the continuous low setting position, continuous low operation will be performed regardless of the temperature state.

[Embodiments of the invention] Hereinafter, embodiments of this invention will be described with reference to the drawings. In this embodiment, the present invention is applied to a kerosene stove.

As shown in FIG. 1, a first electromagnetic pump 4 supplies petroleum into the combustion chamber through a commercial AC power supply 1, an operating switch 2, and a normally open contact 31 of a first relay 3 in series. A igniter 5 for igniting the oil and a fan motor 6 for supplying air into the combustion chamber are connected to the combustion chamber. A second electromagnetic pump 8 is connected in parallel to the first electromagnetic pump 4 through a normally open contact 71 of a second relay 7 for sending oil into the combustion chamber in the same manner as the first electromagnetic pump. On the other hand, a microprocessor 9, an operating volume 10 for temperature setting, and a thermistor 11 as a room temperature detection element are provided, the operating volume 10 is connected to a +V power source via a resistor 14, and the thermistor 11 is connected to a +V power source via a resistor 15. are connected via. The output from the connection point between the operation volume 10 and the resistor 14 is input to the microprocessor 9 via the A/D converter 16, and the output from the connection point between the thermistor 11 and the resistor 15 is input to the A/D converter. The signal is inputted to the microprocessor 9 via the microprocessor 17. The microprocessor 9 takes in continuous strong information, continuous weak information, and set temperature information from the A/D converter 16, and converts it to the A/D converter 1.
7 to perform predetermined program control, the first relay 3 is controlled via the inverter 18, the second relay 7 is controlled via the inverter 19, and the inverter 20
The light emitting diode 21 is controlled via the light emitting diode 21.

The operation volume 10 is incorporated into a temperature setting operation section shown in FIG.
0 resistance value changes, thereby e.g.
I try to set the temperature up to 30℃. Further, the operation knob 22 of this temperature setting operation section has a continuous weak setting position P ₁ provided on the lowest temperature setting side and a continuous strong setting position P ₂ provided on the highest temperature setting side.
When the microprocessor 9 moves to the continuous weak setting position _P1 , the microprocessor 9 reads the continuous weak setting based on the resistance value, and when it moves to the continuous strong setting position _P2 , the microprocessor 9 reads the continuous weak setting. The microprocessor 9 reads the continuous strong setting based on the resistance value. The light emitting diode 21 is attached to the operation knob 22.

As shown in FIG. 3, the microprocessor 9 turns off the first relay 3 to turn off combustion when the temperature _TTH detected by the thermistor 11 exceeds T _VR + α°C with respect to the set temperature T _VR of the operation volume 10. The operation is stopped, and then when the detected temperature T _TH falls below T _VR −β° C., the first relay 3 is turned on again to restart the combustion operation. That is,
For the set temperature T _VR , T _VR +α°C to T _VR −β°C shows an allowable range.

Specifically, the microprocessor 9 performs program control as shown in FIG. First, the temperature T _TH of the room temperature detected by the thermistor 11 is read from the A/D converter 17 . Next, the temperature T _VR set by the operation volume 10 is read from the A/D converter 16 . Then, it compares the set temperature T _VR ' read last time with the set temperature T _VR read this time, and if they match, it is determined that the operation volume 10 has not been operated, and if the two do not match, determines that the operation volume 10 has been operated. If the operation volume 10 is not operated, the operation volume 10 is then set to the continuous high setting position.
P ₂ (T _VR > Tmax) or continuous weak setting position P ₁
(T _VR < Tmin), and if it is at the continuous strength setting position P ₂ , set the strength flag HL to "H", turn on the second relay 7, and turn on the first and second electromagnetic pumps. Both 4 and 8 are controlled to operate. If the continuous weak setting position _P1 is reached, the strong/weak flag HL is set to "L", the second relay 7 is turned off, and only the first electromagnetic pump 4 is controlled to operate. Furthermore, if neither the continuous strong setting position P ₂ nor the continuous weak setting position P ₁ is set, then it is checked whether the detected temperature T _TH is greater than the previously read set temperature T _VR ′ plus α. do. If it is large, the first relay 3 is turned off to extinguish the fire, and the off flag OF is set to "H". If it is smaller, then it is checked whether the detected temperature _TTH is smaller than the temperature obtained by -β from the previously read set temperature _TVR '. If it is smaller, the first relay 3 is turned on to start the combustion operation, and the off flag OF is set to "L".
Also, if the detected temperature T _TH is T _VR ′-β≦T _TH ≦T _VR ′+α, then the off flag OF is “H” or “L”
Depending on the temperature, turn off the first relay 3,
On control.

On the other hand, in the operation judgment of the operation volume 10 described above, if it is determined that the operation volume 10 has been operated, the set temperature T _VR read this time is
At _the same time, it is checked whether the detected temperature T _TH is greater than the set temperature T _VR ' + α. If it is smaller, then it is checked whether the operating volume 10 is at the continuous strong setting position P ₂ (T _VR >Tmax) or the continuous weak setting position P ₁ (T _VR <Tmin). If it is larger, a time Ts is set in a built-in timer, and the light emitting diode 21 is turned on until the timer counts the time Ts. When the time Ts has elapsed, the light emitting diode 21 is turned off and a check is made to see whether the operation volume 10 is at the continuous strong setting position (T _VR >Tmax) or at the continuous weak setting position (T _VR <Tmin). In this check, if the operation volume 10 is at the continuous high setting position _P2 , the strength flag HL is set to "H" and the second relay 7 is turned on, and both the first and second electromagnetic pumps 4 and 8 are turned on. Control to operate. If the continuous weak setting position _P1 is reached, the strong/weak flag HL is set to "L", the second relay 7 is turned off, and only the first electromagnetic pump 4 is controlled to operate. Furthermore, if neither the continuous strong setting position nor the continuous weak setting position is set, the next detected temperature setting temperature T _TH will be the set temperature.
Check if T is greater than _VR . If it is larger, the strength flag HL is set to "L", the second relay 7 is turned off, and only the first electromagnetic pump 4 is controlled to operate. If it is smaller, then it is checked whether the detected temperature T _TH is smaller than the set temperature T _VR minus β. If it is smaller, the strength flag HL is set to "H", the second relay 7 is turned on, and the second electromagnetic pump 8 is turned on.
also control to operate. Also, the detected temperature T _TH
If T _VR −β≦T _TH ≦T _VR , the second relay 7 is controlled to be turned on or off depending on whether the strength flag HL is “H” or “L”.

In the embodiment of the present invention having such a configuration, when the operating knob 22 is set in the range of 12°C to 30°C, the microprocessor 9 receives the setting from the A/D converter 16 according to the setting of the operating volume 10. temperature
T Read _VR information. However, in this case, the room temperature T _TH detected by the thermistor 11 is T _VR +
When the temperature exceeds α℃, the first relay 3 is turned off to stop the combustion operation, and then the detected temperature T _TH becomes T _VR −β
When the temperature drops below .degree. C., the first relay 3 is turned on again to restart the combustion operation. In this way, the room temperature is maintained constant at approximately _TTH . If, for example, the operating knob 22 is moved to the continuous low setting position _P1 while performing such automatic room temperature adjustment control, the temperature detected by the thermistor 11 will temporarily change.
T _TH exceeds T _VR + α°C. For example, if the operating knob 22 is set to 24℃ and the room temperature is balanced, the temperature detected by the thermistor 11 will also be approximately
It is at 24℃. If the operation knob 22 is moved to the continuous low setting position _P1 in this state, the temperature setting position of 23° C. to 12° C. will be passed along the way. However, the temperature detected by the thermistor 11 remains unchanged at approximately 24°C. Therefore, the temperature T _TH detected by the thermistor 11 is T _VR
A situation in which the temperature exceeds +α℃ occurs.

However, in this embodiment, when moving the operating knob 22 to the continuous low setting position _P1 , the light emitting diode 21 is turned on for Ts seconds to notify the change of the set temperature, and during that time the temperature detected by the thermistor 11 is Since the comparison between T _TH and the set temperature T _VR by the operation volume 10 is prohibited, a state where the combustion operation is stopped does not occur. Then, immediately after Ts seconds have elapsed, the set temperature T _VR
is the minimum set temperature Tmin with operation volume 10
If it is, the second relay 7 is turned off, the second electromagnetic pump 8 is stopped, and a continuous weak combustion operation is performed.

In this way, even if the operating knob 22 is moved to a lower temperature to set the continuous weak combustion, there is no risk of extinguishing the fire, and the operation can be performed without the trouble of restarting the combustion operation. You can improve your sexuality. Moreover, since the light emitting diode 21 can know that such a movement of the operating knob 22 has been performed, even if another person moves the operating knob 22.
Even if P1 is set to the continuous weak setting position _P1 , it is easy to know that such an operation has been performed.

In addition, although the above-mentioned embodiment described the application of this invention to a kerosene stove, it is not necessarily limited to this, and can be applied to other heating devices, and can also be applied to cooling devices. Further, in the embodiment described above, a light emitting diode is used to notify the continuous movement of the operating knob to the weak position, but other light emitting elements may be used, or the notification may be provided by a sound such as a buzzer.

"Effects of the invention" As detailed above, according to this invention, even if the temperature detected by the room temperature detection element exceeds the allowable range of the temperature set by the operation volume when the operation volume is operated, the operation is stopped. Therefore, it is possible to provide an air conditioner with excellent operability without being affected by the air conditioner.

[Brief explanation of drawings]

The figures show an embodiment of this invention; Fig. 1 is a circuit diagram of the main part, Fig. 2 is a diagram showing the configuration of the setting operation section, Fig. 3 is a graph showing the allowable range of the set temperature,
FIG. 4 is a flowchart showing combustion control by the microprocessor. 1... Commercial AC power supply, 3... First relay, 4
...First electromagnetic pump, 7...Second relay, 8
... second electromagnetic pump, 9 ... microprocessor, 10 ... operation volume, 11 ... thermistor.

Claims (1)

[Scope of utility model registration request] An operating volume for setting the room temperature is provided, and a continuous weak setting position is provided on the lowest temperature setting side of the operating volume, and a continuous strong setting position is provided on the highest temperature setting side of the operating volume, and a room temperature detection element is provided for detecting the room temperature. The operation is stopped when the temperature detected by the room temperature detection element becomes higher than the permissible temperature range set by the operating volume, and the operation is stopped when the temperature detected by the room temperature detection element becomes lower than the permissible temperature range set by the operation volume. In the air conditioner, which resumes operation when An air conditioner comprising: means for prohibiting a comparison between the temperature set by the operation volume and the temperature detected by the room temperature detection element when counting the time.