JPH01102247A - Combustion type space heater - Google Patents

Abstract

PURPOSE:To quickly heat a room by increasing the combustion rate greater than the rated capacity if the room temperature is lower than the set temperature at the beginning of ignition. CONSTITUTION:If, upon turning on the operation switch 31, the room temperature as detected by a room temperature sensing means 33 is lower by more than 5 deg.C at the beginning of ignition than the temperature set by a room temperature setting means 32, a proportional control valve 26 is fully opened by the action of a combustion rate control device 30 for a certain time interval in the initial stage of ignition, and, at the same time, a blower 13 is operated at its maximum speed to perform a quick heating while the combustion rate of gas by a gas burner 15 is made greater than the rated combustion rate by ten % or more. As a result, the room can be quickly heated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a combustion type heating device that heats a room by burning 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 in which it will be used and the rated combustion 1.

[Problems to be solved by the invention] However, when the room is extremely cold during the winter, even if the room is heated with the rated combustion amount, the room temperature rises slowly and it takes time for the room to warm up. It had the following problems.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a combustion amount control device that can rapidly warm up a room when the room is cold at the initial stage of ignition.

Means for Solving Problem E] In order to achieve the above object, the present invention provides a burner for burning fuel, a room temperature setting means set by the user, and a room temperature checking means for detecting the indoor temperature. and a combustion amount control device that controls the combustion amount in the burner so that the room temperature is maintained at the set temperature set in the room temperature setting means, the combustion amount control device comprising: If, at the initial stage of ignition, the room temperature detected by the room temperature detection means is lower than the predetermined temperature than the set temperature set by the room temperature setting means, the rated combustion is performed in the burner for a predetermined period of time at the beginning of ignition. The technical means is to make it larger than the quantity.

[Operations and Effects of the Invention] The present invention having the above-mentioned configuration provides that when the room temperature detected by the room temperature detection means is lower than the set temperature set by the room temperature setting means and the predetermined humidity is lower than the set temperature set by the room temperature setting means at the initial stage of ignition, the combustion amount control device The combustion amount in the burner is made larger than the rated combustion amount for a predetermined period of time at the initial stage of ignition.

As a result, when the room is cold at the beginning of ignition, the room is heated with a combustion amount greater than the rated combustion amount, making it possible to heat the room more rapidly than with conventional combustion amount control devices. .

[Example] Next, a combustion amount control device of the present invention will be described based on an example shown in the drawings.

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

The gas combustion hot air heating device of this embodiment is an indoor open type (generally called a gas fan heater) that burns air sucked in from the room and blows out the combustion gas indoors again.

This gas combustion hot air heating device introduces indoor air,
A combustion air circulation path 10 that burns the introduced air and blows combustion gas back into the room; a gas supply path 20 that supplies gas into the combustion air circulation path 10; and the combustion air circulation path 10 and the gas supply path. 20 and a combustion amount control device 30 that controls the combustion amount of gas.

The above-mentioned combustion air circulation path 10 includes an indoor air intake port 12 equipped with an air filter 11 that introduces air from inside the room, and an indoor air intake port 12 that sucks air from the indoor air intake port 12, and the air inside the combustion air circulation path 10 and combustion air. Blower 13 for gas flow
, a gas mixing chamber 14 that mixes air and gas, and a gas burner 1 that burns gas above this gas mixing chamber 14.
5, a mixing chamber 16 that mixes the combustion gas combusted by the gas burner 15 and indoor air, and a hot air outlet 17 that blows out the air heated in the mixing chamber 16 as hot air.

The gas introduction path 20 includes a gas jetting nozzle 21 that jets gas into the gas mixing chamber 14 of the combustion air circulation path 10, a gas supply pipe 22 that guides the gas to the gas jetting nozzle 21, and an upstream side of this gas supply pipe 22. A main valve 23 provided on the side and opened and closed by energization and non-rutting, a safety valve 24 provided downstream of this main valve 23 and opened and closed by energization control like the main pulp 23, and a safety valve 24 downstream of this safety valve 24. A governor valve 25 that is provided in A first gas bypass 27 has a flow rate adjustment screw 27a that allows a certain amount of gas to flow out from upstream of the proportional control valve 26 to the gas ejection nozzle 21 without any problem. It consists of a second gas bypass 28 that bypasses gas to the jet nozzle 21, and a rapid heating valve 29 that is provided on this second gas bypass 28 and is opened and closed by energization control, and when the proportional control valve 26 is fully opened. Then, the amount of gas burned 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 amount of gas burned in the gas burner 15 becomes the rated combustion amount. For example, it is set to be larger than the amount by more than ten percent.

The combustion amount control device 30 is operated by a user,
An operation switch 31 that sets the start and stop of the gas combustion hot air heating device, a room temperature setting means (for example, a temperature control volume) 32 that is set by the user, a room temperature detection means (for example, a thermistor) 33 that detects the indoor temperature, An ignition electrode 35 that manually receives a signal from a thermocouple 34 or the like that detects the combustion state of the flame above the gas burner 15 and causes sparks to fly on the combustion surface of the gas burner 15, the blower 13, the main valve 23, the safety valve 24, and proportional control. It controls the energization of the valve 26, the rapid heating valve 29, and the like. In addition,
The combustion amount control device 30 of this embodiment is an electronic control circuit using a microcomputer, and is energized regardless of the setting state of the operation switch 31 when the device is plugged into a commercial power source (not shown). It is something that receives.

Next, the main control portion by the combustion amount control device 30 according to the present invention will be explained based on the flowchart of FIG. 2.

When the operation switch 31 is turned on and heating operation is started, in step S1, the room temperature detected by the room temperature detection means 33 is subtracted from the set temperature set by the room temperature setting means 32, and the difference is calculated as a predetermined temperature (for example, 5 ℃) or higher. If the determination result is NO, normal heating operation without rapid heating is performed in step S2. Further, if the determination result in step S1 is YES, it is determined that the room to be heated is cold, and step S1 is determined.
3, within a predetermined time after the start of heating operation (for example, 1
(within 5 minutes). If this judgment result is No, proceed to step S2, and if the judgment result is YES.
For example, in step S4, the proportional control valve 26 is fully opened, the rapid heating valve 29 is opened, and the air blower is turned on.
113 with Magisim to perform rapid heating, and then return to step S1.

As shown in the above embodiment, at the initial stage of ignition, the room temperature setting means 3
If the room temperature detected by the room temperature detection means 33 is 5°C or more lower than the set concentration set by the combustion amount control unit N30.
Due to the function of the room temperature setting means 32 for a predetermined time at the initial stage of ignition
The combustion amount of gas in the gas burner 15 is increased by more than ten percent than the rated combustion amount until the difference between the set temperature set in and the room temperature detected by the room temperature detection means 33 becomes smaller than 5°C.

As a result, when the room is cold at the initial stage of ignition, the room is heated with a combustion value larger than the rated combustion amount, making it possible to heat the room more rapidly compared to conventional combustion amount control devices. can.

In addition, as a means to increase the combustion amount of the burner larger than the rated combustion amount, we used a bypass that bypasses the proportional control valve and a valve that opens and closes this bypass. This may be done by other means such as.

Although we have shown an example of using a computer as a combustion amount control device,
An analog electric circuit using transistors, operational amplifiers, etc. may be used.

In addition, in this example, air sucked from indoors is combusted,
Although we have shown as an example an indoor open-type combustion heating device that blows combustion gas back into the room, there are also FF-type combustion heating devices that exchange heat between the combustion gas and indoor air and release the combustion gas outdoors.
It may also be applied to a combustion amount control device incorporating a refrigeration cycle.

Further, although an example is shown in which gas is used as the fuel n, the present invention may also be applied to a heating device that burns other fuels such as kerosene.

[Brief explanation of the drawing]

Figure 1 shows gas combustion hot air 81! FIG. 2 is a 70-day diagram showing the essential parts of the present invention programmed into the combustion amount control device. In the diagram 15... Burner 30... Combustion amount control device
32...Room temperature setting means 33...Room temperature detection means procedural amendment dated November 24, 1988 2. Title of the invention Combustion amount control device 3. Relationship to the case of the person making the amendment Patent applicant address Nagoya City 2-26 Fukusumi-cho, Nakayo-ku Name
Rinnai Corporation Representative Susumu Naito 4, Agent 465 Phone: 052-704-15516,
Detailed explanation of the invention column 7 of the specification subject to amendment, content of amendment 1) Amend "indoor open type" on page 4, line 8 of the detailed description of the invention column to "indoor open type" . 2) "Indoor open type" on page 9, line 7 in the Detailed Description of the Invention column is corrected to "indoor open type."

Claims (1)

[Scope of Claims] A burner for burning fuel, a room temperature setting means set by the user, and a room temperature detection means for detecting the temperature in the room, and the room temperature reaches the set temperature set in the room temperature setting means. and a combustion amount control device that controls the combustion amount in the burner so that the amount of combustion in the burner is maintained, the combustion amount control device: A combustion type heating device characterized in that when the room temperature detected by the room temperature detection means is lower than a predetermined temperature, the combustion amount in the burner is made larger than the rated combustion amount for a predetermined time at the initial stage of ignition.