JP3463722B2 - Oil heater control device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a controller for an oil heater that effectively heats a room.

[0002]

2. Description of the Related Art In fan heaters and intake / exhaust type heaters, the temperature in the room must match the preset temperature.
Some have a combustion amount varying means for controlling the calorific value of the burner. When the actual room temperature is very low compared to the room temperature set by the operator, when the burner is ignited, the burner burns at a maximum calorific value higher than the normal maximum calorific value for a few minutes immediately after ignition, so that There is one that can get a rise.

On the other hand, with respect to the maximum heat generation amount of the burner, there is one having a mechanism for selecting the size of the room to be heated, and this mechanism has a maximum heat generation amount of 3200 Kcal when set for an 8 tatami mat with the same burner. It is a mechanism that is limited to 2300 Kcal when set for 6 tatami mats.
There are many combinations of such a mechanism and a mechanism that temporarily burns at the maximum calorific value at the time of ignition, etc., and in the advertisement etc., you can choose the room to be heated, or you can quickly warm the room at the time of ignition. It is a heater that is said to be possible.

[0004]

A heater having such a feature does not allow the maximum heat generation amount displayed for heating a room to correspond to the maximum heat generation amount of the burner to be used, so that the burner actually has a margin. When a certain amount of heat is displayed, the size of the heater frame is determined assuming the room to be used, and the maximum amount of heat displayed on the heater is determined to be lower than the maximum amount of heat generated by the burner. There are many.

As described above, since there is a margin in the calorific value of the burner, it is possible to burn at a maximum calorific value equal to or higher than the maximum calorific value displayed in advance even immediately after ignition. And if you use the heat shield effectively to make the structure that heat does not stay inside the frame, or if you can effectively dissipate the heat generated by the burner and use it for indoor heating, the maximum heat generation immediately after ignition of the heater will be achieved. It is also possible to display the maximum calorific value of the burner so that the maximum calorific value of the burner can be used at any time.

It is considered that it is a conscientious design using advanced technology to improve the frame structure and the like so that the maximum heat generation amount of the burner and the maximum heat generation amount of the heater match. Actually, the mechanism that can reduce the calorific value of the display and burn 3-5 minutes at the maximum calorific value immediately after ignition impresses the operator with an image of new function, and displays it on the maximum calorific value of the burner and the heater. There was a case where the heater that tried to match the maximum heat generation amount received the inferior heater that lacked the function.

[0007]

SUMMARY OF THE INVENTION The present invention is a controller for an oil heater that uses a burner that burns at the maximum calorific value to enable combustion with a temporary but maximum calorific value equal to or higher than the maximum calorific value. Therefore, the burner 2 and the combustion chamber 3 connected to the burner 2 are provided in the frame 1, and the operation switch 4
Is provided with an ignition means 5 for igniting the fuel supplied to the burner 2 according to the signal of 1. , Temperature detecting means 7 for detecting temperature
Is provided, and the maximum heat generation in which the heat generation amount of the burner 2 is displayed on the heater by the signals of the temperature setting means 6 and the temperature detection means 7.
In the oil heater having the combustion amount varying means 8 for controlling the amount of heat and the actual maximum calorific value of the burner to match , the calorific value of the burner 2 ignited by the signal of the operation switch 4
The temperature at which the burner is suitable for combustion with the maximum calorific value above the maximum combustion value
During a predetermined time until the distribution of the combustion limiting means 9 for controlling the following predetermined heating value less than the maximum amount of heat generated, by combustion limiting means 9 after combustion restriction release of combustion quantity changing means 8
Hayadan combustion means operative during selected the Oite maximum heating value
10 is provided and the fast warm combustion means 10 maintains the maximum heat generation amount of the maximum heat generation amount or more for a predetermined time , and the burner enables stable combustion regardless of the maximum heat generation amount of the maximum heat generation amount or more. It is a thing.

Further, if the fast-warming combustion means 10 is in an inoperative state when the difference signal between the temperature setting means 6 and the temperature detection means 7 is small, the room temperature for exchanging heat with the wall of the combustion chamber 3 is high. The temperature of the combustion chamber 3 wall rises quickly, preventing the temperature of the combustion chamber 3 wall from becoming an abnormally high temperature.

The fast-warming combustion means 10 is provided on the frame body 1 .
When the detected temperature signal of the second temperature detecting means 7a is a specific temperature
In if work dynamic state, for example, by the second temperature detecting means 7a for detecting the temperature of the vaporization section of the burner 2 detects a stable specific temperature, the burner 2 is able to initiate combustion of the highest heating value It is possible.

[0010]

The present invention has a generalized function of quickly warming the room at the time of ignition, the maximum heat value displayed on the heater and the burner 2
This is the first realization of the function to quickly warm the room by removing the condition immediately after ignition in a heater in which the actual maximum calorific value of is almost matched. When the burner 2 is ignited, the combustion limiting means 9 functions to burn the burner 2 while maintaining a combustion amount smaller than the calorific value capable of burning immediately after ignition, and thereafter, after the combustion limiting means 9 becomes inoperative. The combustion with the highest calorific value is made possible by the rapid heating combustion means 10 for a predetermined time. Then, before the temperature of the vaporization section of the burner 2 gradually decreases during combustion and causes poor combustion, the fast warm combustion means 10 stops its operation and returns to the normal maximum calorific value.

While the combustion limiting means 9 is operating,
The burner 2 including the vaporization section has a temperature distribution suitable for combustion with the highest calorific value, and the combustion with the highest calorific value can be realized by the fast-warming combustion means 10 without causing abnormal combustion due to poor vaporization. For example, immediately after the ignition operation. Even if the maximum calorific value is not reached, the burner 2 can release more heat energy into the room than when the normal maximum combustion amount is continued.

Further, when the fast-warming combustion means 10 is operating, it is necessary to efficiently dissipate heat from the combustion chamber 3 and the like, and when the difference signal between the temperature setting means 6 and the temperature detection means 7 is small, the fast-warming means By disabling the combustion means 10, it is possible to prevent in advance the trouble that the temperature of the wall of the combustion chamber 3 becomes abnormally high due to poor heat radiation.

Further, in order for the fast-warm combustion means 10 to operate, the temperature of each part needs to be a temperature at which the maximum amount of fuel is vaporized and burned, and the second temperature detection means in the frame body 1 is required. 7a is provided, and the second temperature detecting means 7a detects a stable specific temperature, so that the burner 2 realizes the combustion of the maximum calorific value without abnormal combustion even if the fast warming combustion means 10 operates. I can do it now.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the embodiments shown in the drawings. 1 is a frame of a heater, 2 is a burner provided in the frame 1,
Reference numeral 3 is a combustion chamber connected to the upper portion of the burner 2, 11 is an air passage communicating from the back portion to the front portion of the frame body 1, and the combustion chamber 3 is arranged in the air passage 11.

Reference numeral 12 denotes a convection fan provided at the back of the frame body 1 looking into the air flow path 11, reference numeral 13 denotes a hot air outlet provided at the front portion of the frame body 1 looking into the air flow path 11, and the combustion chamber 3 is The indoor air, which is located in the air flow passage 11 and passes through the air flow passage 11 by the convection fan 12, is heated when passing through the vicinity of the wall of the combustion chamber 3 and becomes hot air and is blown out from the hot air outlet 13. There is. The heater of the embodiment shown in the drawing is an open type, the combustion chamber 3 opens into the hot air flow passage 11, and the combustion exhaust gas is exhausted from the air flow passage 11 through the warm air outlet 13 into the room.

Reference numeral 4 is an operation switch provided on the operation portion of the frame 1, 14 is a combustion fan for supplying combustion air to the burner 2, 15 is a fuel pump for supplying fuel to the burner 2, and 5 is burner 2. The ignition means 5 is for igniting the supplied fuel, and the ignition means 5 also serves as a preheating heater for the vaporization part of the burner 2. When the ignition means 5 is operated by operating the operation switch 4, the preheating of the burner 2 is performed. After completion of preheating, the fuel sent to the burner 2 is ignited, and the combustion is continued by the combustion air supplied to the burner 2.

Reference numeral 6 is a temperature setting means for setting a desired room temperature provided in the operation part of the heater, 7 is a temperature detecting means for detecting the temperature of the indoor air, and 16 is temperature data of the temperature setting means 6 and the temperature detecting means 7. Is a comparison means for comparing, and outputs a difference signal of both temperature data. Reference numeral 8 is a combustion amount varying means for controlling the heat generation amount of the burner 2 by the difference signal between the temperature setting means 6 and the temperature detecting means 7 inputted from the comparing means 16, and the combustion amount varying means 8 is provided with a combustion fan 14 and By controlling the fuel pump 15, the calorific value of the burner 2 is controlled so that the room temperature matches the temperature set by the temperature setting means 6.

Reference numeral 9 is a combustion limiting means for preventing the burner 2 which has started ignition / combustion by operating the operation switch 4 from performing the maximum combustion amount by the combustion amount varying means 8, and 17 is counted by the start signal of the operation switch 4. The timer 17 is a timer that starts, and the timer 17 regulates the operation of the combustion limiting means 9. The combustion limiting means 9 starts the timer 17 after ignition.
The burner 2 has a function of maintaining a combustion amount less than the maximum combustion amount and continuing combustion for a predetermined time period defined by.

The burner 2 continues combustion with a combustion amount smaller than the maximum combustion amount even if the maximum combustion amount is selected, for example, for 5 minutes after ignition, during which the vaporization section of the burner 2 is fed back by the combustion heat feedback or the like. It is intended to obtain a stable high temperature as a whole. At this time, even if the burner 2 is combustible, if the combustion is continued at the maximum combustion amount, most of the amount of heat fed back is used for vaporizing the fuel, and the entire burner 2 cannot be brought to a stable temperature in a short time.

When the combustion amount varying means 8 selects the maximum calorific value that can be selected by removing the restriction of the combustion amount by the combustion restricting means 9, the maximum calorific value 10 is larger than this maximum calorific value. This is a fast-warming combustion means for instructing the burner 2 of the amount, and the fast-warming combustion means 10 is equipped with a variable timing circuit, and the burner 2 is operated during a predetermined time including zero defined by the conditions of various input signals. Maintains the highest calorific value. Then, for the combustion with the highest calorific value, thermal energy is used to vaporize the fuel, the temperature of the vaporization part of the burner 2 is lowered, and a predetermined time elapses before abnormal combustion occurs due to poor vaporization or the like. 2 is to return to the operation with the maximum heat generation amount.

A rapid heating combustion means 10 having a function of quickly heating the room by increasing the amount of heat generated by the burner 2 of the heater.
Takes in the difference signal between the temperature setting means 6 and the temperature detecting means 7 from the comparing means 10 to determine the operating condition of the variable timing circuit. That is, when the temperature difference between the temperature setting means 6 and the temperature detecting means 7 becomes small, the internal variable timing circuit stops the function of the fast warm combustion means 10, so the combustion amount changing means 8 selects the maximum heat generation amount. Even the combustion amount varying means 8
Does not select the maximum calorific value, and the burner 2 burns at the maximum calorific value.

If the fast-warm combustion means 10 is operated when the room temperature is close to the set temperature, the ability to cool the walls of the combustion chamber 3 with indoor air is insufficient, and the temperature of the combustion chamber 3 wall rises to an abnormally high temperature. There is a possibility that the trouble may occur, and even though it is a predetermined time, when the fast-warming combustion means 10 is activated, the room temperature rises suddenly and becomes higher than the room temperature set by the temperature setting means 6. However, there is a problem that the room temperature does not easily approach the set temperature, but in the present invention, such troubles could be prevented in advance because the fast-warming combustion means does not operate.

Reference numeral 7a denotes a second temperature detecting means provided in the frame body 1. The temperature signal detected by the second temperature detecting means 7a is connected to the input of the fast warming combustion means 10 and the fast warming combustion means 10 is connected.
It is a signal for determining the operating condition of the variable timing circuit incorporated in the above, and when the second temperature detecting means 7a detects the specific temperature, the fast warm combustion means 10 is in the operating state.

For example, the second temperature detecting means 7a is attached at a position where the temperature of the vaporizing portion of the burner 2 in the frame 1 can be detected,
The variable timing circuit extends the predetermined time until the second temperature detecting means 7a detects a stable specific temperature, and then the burner 2 can start the combustion of the maximum calorific value. Therefore, when the second temperature detecting means 7a detects a specific temperature, the temperature of the burner 2 is stable, and it is confirmed that the maximum combustion is possible, and the fast-warming combustion means 10 operates. As a result, abnormal combustion no longer occurs.

Further, when the high limit switch is attached to a position where the temperature outside the air flow path 11 in the frame 1 can be detected, the high limit switch may be caused to function as the second temperature detecting means 7a. Also, the temperature detecting means 7 provided at a position for detecting the room temperature may be caused to function as the second temperature detecting means 7a, and in this case, the fast warm combustion is performed until the second temperature detecting means 7a detects the specific temperature. Since the means 10 is set to the operating state, if the temperature of the frame 1 approaches the high limit temperature or the room temperature becomes high,
The fast warm combustion means 10 cannot operate and the combustion amount of the burner 2 decreases, so that the safety of the heater can be maintained.

[0026]

As described above, when the maximum heat generation amount displayed on the heater and the actual maximum heat generation amount of the burner 2 are made to substantially coincide with each other, when the function of quickly warming the room at the time of ignition is operated, the burner 2 Immediately after ignition, combustion will occur with a maximum calorific value or more, and feedback of heat from the burner 2 may be insufficient, causing abnormal combustion due to poor vaporization,
After all, it was thought that such a heater could not have this feature.

This invention realizes the function of quickly heating the room by recognizing that the function of quickly heating the room is a necessary function and removing the conventional condition immediately after ignition. The burner 2 continues to generate a calorific value smaller than the calorific value that can be burned immediately after ignition, and after a few minutes, it is possible to burn more than the maximum calorific value of the burner 2 during normal combustion. In view of this, the total calorific value can be substantially made larger than that when the maximum calorific value is continued.

Further, the conventional function of quickly warming the room at the time of ignition can be realized by setting a lower combustion amount than the maximum combustion amount determined by the size of the burner 2 as the maximum heat generation amount of the heater. However, even if the operator accepted this function, the energy balance between the burner 2 and the maximum calorific value of combustion was obviously negative. This invention uses 2500 burners of 2300 Kcal for 2500
For the burner that measured the increase in maximum calorific value for Kcal,
Furthermore, it is a practical invention that proposes a structure that is effective when adding a function to quickly warm the room.

Further, the function of quickly warming the room burns more than the maximum calorific value of the burner 2, so if it functions when the room temperature is close to the set temperature, the room temperature rises too much and the desired room temperature cannot be followed. There is. Also, in order to enable combustion above the maximum calorific value of the burner 2, the burner 2
There is a risk that the temperature of the wall of the combustion chamber 3 will rise abnormally due to the need to radiate heat from the inside to the interior of the room, and in this invention, when the difference signal between the temperature setting means 6 and the temperature detecting means 7 is small, Since the quick-warming combustion means 10 is in an inoperative state and does not function, such a trouble can be prevented.

Further, when the burner 2 burns at a maximum combustion amount or more, the temperature of the burner 2 including the vaporization section needs to be a temperature at which the supplied fuel vaporizes, even if it is temporarily vaporized. Second temperature detecting means 7a for detecting the temperature of the section
Is provided, the fast-warm combustion means 10 is activated when the detected temperature signal of the second temperature detection means 7a reaches a specific temperature. Therefore, the fast-warm combustion means 10 is always automatically operated after a lapse of a predetermined time from ignition. Since the quick warm combustion means 10 is activated after confirming that combustion is possible, the combustion failure does not occur.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a sectional view of an oil heater showing an embodiment of the present invention.

[Explanation of symbols]

1 frame 2 burners 3 Combustion chamber 4 operation switch 5 Ignition means 6 Temperature setting means 7 Temperature detection means 7a Second temperature detecting means 8 Combustion amount variable means 9 Combustion limiting means 10-speed warm burning means

Claims (3)

(57) [Claims] 1. A frame 2 is provided with a burner 2 and a combustion chamber 3 to which the burner 2 is connected, and ignition means 5 for igniting the fuel supplied to the burner 2 in response to a signal from an operation switch 4 is provided. The indoor air is heated by the wall of the combustion chamber 3 to heat the room, and the temperature setting means 6 for setting the temperature of the room to be heated and the temperature detecting means 7 for detecting the temperature are provided. The maximum calorific value displayed on the heater by the signal from the means 7
Actual in maximum heat and oil heater having a combustion amount changing means 8 for controlling to match the burner calorific value of the burner 2 which is ignited by the signal driving the switch 4 from the ignition maximum combustion amount or more of the highest heat generation Suitable for quantity combustion
That the temperature distribution to become up to a predetermined time from the combustion limiting means 9 for controlling the following predetermined heating value smaller than the maximum heating value, the maximum heat generated by the combustion limiting means 9 after the combustion limit release of combustion quantity changing means 8 Fast warm-up that operates when the amount is selected
It provided a baked means 10, the velocity warm combustion means 10 control the oil heater, characterized and Turkey maintain the highest heating value greater than or equal to the maximum heating value predetermined time. 2. The control device for an oil heater according to claim 1, wherein the rapid warming combustion means 10 is in an inoperative state when the difference signal between the temperature setting means 6 and the temperature detection means 7 is small. 3. The fast warm combustion means 10 is provided on the frame body 1 .
When the detected temperature signal of the second temperature detecting means 7a is a specific temperature
Control device for oil heaters of the work dynamic state claim 1 or claim 2, wherein the.