JPH0646114B2 - Combustion heating system - Google Patents

Description

TECHNICAL FIELD The present invention relates to a combustion type heating device for heating a room by burning a fuel such as gas or kerosene.

[Prior Art] When installing this type of heating device, the heating device is selected and installed in consideration of the size of the room to be used and the rated combustion amount.

However, in the case where the room is completely cold in winter or the like, even if the room is heated with the rated combustion amount, the room temperature rises slowly and it takes time to warm the room.

Therefore, there is a demand for a combustion type heating device that can make the amount of combustion in the burner larger than the rated amount of combustion only within a predetermined period of time at the beginning of ignition to heat the room more rapidly than in conventional combustion type heating devices. There is.

[Problems to be Solved by the Invention] However, depending on the user, the environment of use, etc., there may be cases where the increase in blowing noise and combustion noise due to rapid heating is avoided, or there is no need for rapid heating.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a combustion-type heating device capable of canceling rapid heating in a room in accordance with a user's preference or a user's usage environment. is there.

[Means for Solving the Problems] In order to achieve the above object, the present invention is a combustion system including a burner that burns fuel, and a combustion amount control device that controls the combustion amount of fuel in the burner. In the heating device, the combustion amount control device includes an operation switch operated by a user, and display means for displaying the setting state of the operation switch to the user, and the setting state of the operation switch is set to rapid heating. And, when the room temperature is lower than the predetermined temperature for a predetermined time in the initial stage of ignition, the technical means is to increase the combustion amount in the burner above the rated combustion amount.

[Operation and Effect of the Invention] With the present invention having the above-described configuration, the combustion amount control device works to make the combustion amount in the burner larger than the rated combustion amount for a predetermined time in the initial period of ignition depending on the setting state of the operation switch. To do.

As a result, the room can be rapidly heated according to the user's preference and the user's usage environment.

Further, since the setting state of the operation switch is displayed to the user by the display means, the user can confirm the setting state at the time of starting.

[Embodiment] Next, a combustion type heating apparatus of the present invention will be described based on an embodiment shown in the drawings.

FIG. 1 shows a schematic configuration diagram of a gas combustion type hot air heating device to which the present invention is applied.

The gas combustion type hot air heating apparatus of the present embodiment is an indoor open type (generally called a gas fan heater) that burns air sucked from the room and blows the combustion gas again into the room.

This gas combustion type hot air heating system introduces indoor air,
A combustion air circulation path 10 for combusting the introduced air and blowing the combustion gas again into the room, a gas supply path 20 for supplying gas into the combustion air circulation path 10, a combustion air circulation path 10 and a gas supply path. A combustion amount control device 30 for controlling the combustion amount of gas by controlling 20.

The combustion air circulation path 10 is an indoor air suction port 12 provided with an air filter 11 for introducing air from the room, and sucks air from the indoor air suction port 12 so that air and combustion in the combustion air circulation path 10 are performed. Blower 13 for flowing gas, gas mixing chamber 14 for mixing air and gas, gas burner 15 for burning gas above this gas mixing chamber 14, combustion gas burned by this gas burner 15 and chamber It is composed of a mixing chamber 16 for mixing with air, and a hot air outlet 17 for blowing out the air heated in the mixing chamber 16 as warm air.

The gas supply passage 20 is the gas mixing chamber 14 of the combustion air circulation passage 10.
A gas ejection nozzle 21 for ejecting gas into the inside, a gas supply pipe 22 for guiding the gas to the gas ejection nozzle 21, and this gas supply pipe
A main valve 23 provided on the upstream side of 22 and opened / closed by energization / de-energization, a safety valve 24 provided on the downstream side of the main valve 23 and opened / closed by energization control similarly to the main valve 23, and this safety valve 24 And a governor valve 25 that is provided downstream of the
A proportional control valve 26 provided downstream of the proportional control valve 26 whose opening degree is variable according to the energization amount, and a constant amount of gas flowing out from the upstream of the proportional control valve 26 to the gas ejection nozzle 21 regardless of whether the proportional control valve 26 is opened or closed. First gas bypass 2 having flow rate adjusting screw 27a
7, a second gas bypass 28 that bypasses the gas from the upstream of the proportional control valve 26 to the gas ejection nozzle 21, and a second gas bypass 28 that is provided in the second gas bypass 28 and is opened and closed by energization control. Consisting of quick heating valve 29,
When the proportional control valve 26 is fully opened, the combustion amount of gas in the gas burner 15 becomes the rated combustion amount, the proportional control valve 26 is fully opened, and the rapid heating valve 29 is opened, so that the gas burner 15 is opened. The combustion amount of the gas is set to be larger than the rated combustion amount by, for example, ten and several percent.

The combustion amount control device 30 is operated by the user, the operation switch 31 for setting the start and stop of the gas combustion type hot air heating device, the room temperature setting means 32 set by the user,
Signals from the room temperature detecting means 33 for detecting the temperature inside the room, the thermocouple 34 for detecting the combustion state of the flame above the gas burner 15, the quick heating setting switch 35 which is the operation switch of the present invention set by the user, and the like. The display means 36 for displaying the setting state of the quick heating setting switch 35, the display of the rapid heating operation, the mode display, the combustion monitor display, etc. by lighting a lamp or a light emitting diode, and the spark on the combustion surface of the gas burner 15. Ignition electrode 37, blower 13, main valve 23, safety valve 24, proportional control valve
26, the rapid heating valve 29, etc. are energized and controlled.

It should be noted that the combustion amount control device 30 of the present embodiment is an electronic control circuit using a microcomputer, and is related to the setting state of the operation switch 31 in a state where an outlet (not shown) of the device is inserted into a commercial power source. Instead, it is energized.

Further, the quick heating setting switch 35 is a non-lock type push switch, a touch switch, or other automatic resetting type switch, and when operated by the user, the setting state is controlled regardless of the setting state of the operation switch 31. Device 30
Is stored in. As a result, the operation switch 31
When the switch is turned off and the operation is restarted, the operation is restarted according to the setting state of the rapid heating setting switch 35 set to the pre-opening.

Further, the setting of the rapid heating setting switch 35 can be freely changed before the ignition detection, and can be changed only once after the ignition detection and within the set time during which the rapid heating can be performed. This is so that after the operation switch 31 is turned on, the quick heating setting switch 35 can be changed when it is not in the desired state. How many times can the change be made only once? However, this is to eliminate the problem that the combustion state becomes unstable immediately after the start of combustion if the change is made.

Next, the control part of the main part by the combustion amount control device 30 according to the present invention will be described based on the flowchart of FIG.

When the operation switch 31 is turned on and the heating operation is started, it is determined in step S1 whether or not the output voltage of the thermocouple 34 has increased to an output value (for example, 12 mV or higher) at which flame is detected. If the result is NO, step S1 is repeated. If the result is YES, it is determined in step S2 whether or not the setting state of the quick heating setting switch 35 is set to quick heating.

If the result of this determination is YES, in step S3, the room temperature detecting means is determined from the set temperature set by the room temperature setting means 32.
The detected room temperature of 33 is subtracted, and it is judged whether or not the difference is, for example, 5 ° C. or more. If the determination result is YES, it is determined that the room to be heated is cold, and in step S4, it is determined whether or not it is within a predetermined time (for example, 15 minutes) after the start of the heating operation. If the determination result is YES, in step S5, the proportional control valve 26 is fully opened, the rapid heating valve 29 is opened, and the blower 13 is operated by Maxim to perform rapid heating. Then, in step S6, the number of times the setting of the quick heating setting switch 35 is changed is 1
Judge whether it is within the number of times. This judgment result is YE
If S, the process proceeds to step S2, and if NO, the process proceeds to step S3.

The judgment result of step S2 and the judgment result of step S3 are
In the case of NO, in step S7, normal heating operation without rapid heating is performed. Next, in step S8, it is determined whether it is within a predetermined time (for example, 15 minutes) after the heating operation is started. If the determination result is YES, it is determined in step S9 whether or not the number of times the setting of the quick heating setting switch 35 is changed is less than one. If this determination result is YES, the process proceeds to step S2, and if NO, the process proceeds to step S7.

The judgment result of step S4 and the judgment result of step S8 are
In the case of NO, in step S10, normal heating operation without rapid heating is performed.

As shown in the above embodiment, depending on the setting state of the quick heating setting switch 35, a predetermined time (15
Within a minute), the user can select rapid heating that makes the combustion amount in the burner larger than the rated combustion amount and cancellation of this rapid heating. Depending on the environment and the like, it is possible to selectively use rapid heating that rapidly heats the room with a combustion amount larger than the rated combustion amount.

Further, since the user can confirm the set state by the display means 36 at the start of the operation, and the quick heating can be changed at the initial stage of ignition, the operation switch is provided.
When the quick heating setting switch 35 is not in the state desired by the user when 31 is turned on, the desired state can be changed.

A bypass that bypasses the proportional control valve and a valve that opens and closes this bypass were used as means for increasing the burner combustion amount above the rated combustion amount. You may perform by other means, such as.

The operation switch may be provided with a variable volume or the like so that the quick heating capacity can be varied.

An example of using a computer for the combustion amount control device was shown,
It may be configured by an analog electric circuit using a transistor, an operational amplifier, or the like.

Further, in this embodiment, the air sucked from the room is burned,
An indoor open-type combustion heating device that blows combustion gas back into the room has been shown as an example, but an FF-type combustion heating device that causes heat exchange between the combustion gas and indoor air, and discharges the combustion gas to the outside, and a refrigeration cycle It may be applied to a built-in combustion type heating device.

Furthermore, although an example in which gas is used as the fuel is shown, it may be applied to a heating device that burns another fuel such as kerosene.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a gas combustion type warm air heating device, and FIG. 2 is a flow chart showing a main part of the present invention programmed in a combustion amount control device. In the figure, 15 …… gas burner, 30 …… combustion amount control device, 35 ……
Rapid heating setting switch (operation switch), 36 ... Display means

Claims (1)

[Claims] 1. A combustion type heating device comprising a burner for burning fuel and a combustion amount control device for controlling the combustion amount of fuel in the burner, wherein the combustion amount control device is operated by a user. An operating switch for displaying the setting state of the operating switch to the user, and the setting state of the operating switch is set to rapid heating, and the room temperature is lower than a predetermined temperature for a predetermined period of initial ignition. In addition, the combustion type heating device is characterized in that the combustion amount in the burner is made larger than the rated combustion amount.