KR200493212Y1 - Photoelectric tube using optical devices with different amplification and combustion control system including the photoelectric tube - Google Patents

Abstract

The present invention relates to a photoelectric tube applied to a boiler and a heater and configured to detect and determine a combustion state using optical elements having different amplification degrees, and a combustion control system including the same. An embodiment of the present invention is a case, a cap embedded in the case and formed at one end of the cap, an prevention film coupled to the locking portion, an optical sensor coupled to the cap and including a plurality of optical elements having different amplification degrees, the optical A photoelectric tube including a junction formed at one end of a sensor, a wire connected to the junction, and a connection terminal connected to the wire is provided.

Description

Photoelectric tubes using optical devices with different degrees of amplification, and combustion control system including the same.

The present invention relates to a photoelectric tube using optical devices having different degrees of amplification and a combustion control system including the same.The present invention relates to a phototube applied to a boiler and configured to detect and determine a combustion state using optical devices having different degrees of amplification, and It relates to a combustion control system.

A boiler operated for heating or hot water supply has a combustor and an optical sensor installed in the combustor to detect combustion flames. That is, the optical sensor is applied to a boiler that burns in a combustor by supplying fuel such as gas or other heavy oil, and is used to detect whether the initial ignition and combustion of the boiler are normally performed. In addition, the optical sensor can sense information such as combustion and overheating occurring in the combustor, and through this, it is possible to prevent explosion or fire in the boiler that may occur due to unburned boiler.

Such an optical sensor is also called a photoelectric tube, and the photoelectric tube has a structure in which a film such as sodium, potassium, and cesium is attached to the inner surface of a glass tube filled with vacuum or low pressure gas to form a cathode and an anode is placed in the center of the tube . Is formed. In addition, when light is emitted to the cathode inside the phototube, photoelectrons are radiated according to the size of the light, and the phototube is designed so that changes in light can be converted into electric current.

Conventional phototubes use a CDS (Cadmium sulfide) sensor whose resistance value changes according to the intensity of light. However, the CDS sensor has a problem that is formed of cadmium sulfide, which is a harmful material.

The present invention has been devised to solve the above problems, and the technical problem to be achieved by the present invention is to provide a photoelectric tube capable of determining a combustion state using optical elements applicable to a boiler and having different amplification degrees.

In addition, another technical problem to be achieved by the present invention is to provide a combustion control system capable of controlling a combustion state of a boiler using the above-described photoelectric tube.

The technical task to be achieved by the present invention is not limited to the technical task mentioned above, and other technical tasks not mentioned can be clearly understood by those of ordinary skill in the technical field to which the present invention belongs from the following description. There will be.

In order to solve the above technical problem, an embodiment of the present invention is a photoelectric tube applicable to a boiler, a case, a cap embedded in the case and formed at one end, and an prevention film coupled to the locking part, and coupled to the cap and each other It provides a photoelectric tube including an optical sensor including a plurality of optical devices having different degrees of amplification, a junction formed at one end of the optical sensor, a wire connected to the junction, and a connection terminal connected to the wire.

In this embodiment, it may further include a filler formed in the case so as to surround the junction and made of epoxy or urethane.

In this embodiment, the case is formed of a cylindrical body portion and a head portion, and the diameter of the body portion may be larger than the diameter of the head portion.

In this embodiment, the optical sensor includes a first optical device and a second optical device having different amplification degrees, and when an optical device having a low amplification degree among the first and second optical devices is in a conduction state, it is determined as normal combustion. If, among the first optical device and the second optical device, an optical device having a high amplification degree is in a conducting state and an optical device having a low amplification degree is in a non-conducting state, it may be determined as unstable combustion.

In this embodiment, the first optical device and the second optical device may be formed of a photo transistor or a photodiode, respectively.

In this embodiment, the case may be formed of plastic or rubber, the cap may be formed of metal, and the prevention film may be formed of glass.

In addition, in order to solve the above technical problem, another embodiment of the present invention is a combustion control system applicable to a boiler, the photoelectric tube according to any one of claims 1 to 6, and controlling the gas flowing into the boiler. When the gas valve for, an exhaust fan that provides wind to the boiler, and the photoelectric tube determines the combustion state of the boiler as unstable combustion, the gas valve is controlled to control the amount of gas introduced into the boiler, and the exhaust fan is controlled. It provides a combustion control system including a control unit for determining that the photoelectric tube is stable combustion by adjusting the amount of air flowing into the boiler.

According to the present invention, phototubes can be formed using optical devices having different amplification degrees, and these phototubes determine a state in which an optical device with a low amplification degree conducts as normal combustion, and an element with a high amplification degree is in a conducting state and amplification degree If the low element does not conduct, it can be determined as an unstable combustion state.

In addition, according to the present invention, when it is determined that the combustion state is unstable using the above-described photoelectric tube, the combustion state can be controlled by adjusting the amount of gas, the number of rotations of the exhaust fan and/or the blowing fan.

The effects of the present invention are not limited to the above effects, and it should be understood to include all effects that can be deduced from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a diagram showing detailed configurations of a photoelectric tube according to an embodiment of the present invention.
2 is a diagram schematically showing the configuration of an optical sensor according to an embodiment of the present invention.
3 is a diagram illustrating optical elements constituting an optical sensor according to an embodiment of the present invention.
4 is a diagram showing a detailed configuration of a connection terminal according to an embodiment of the present invention.
5 is a block diagram showing the configuration of a combustion control system according to another embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. However, the present invention may be implemented in a number of different forms, and therefore is not limited to the embodiments described herein. In addition, the accompanying drawings are for easy understanding of the embodiments disclosed in the present specification, and the technical idea disclosed in the present specification is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present invention It should be understood to include water, equivalents or substitutes. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and the size, shape, and shape of each component shown in the drawings may be variously modified, and the same/similar parts for the entire specification The same/similar reference numerals are attached.

Suffixes for components used in the following description are given or used interchangeably in consideration of only the ease of writing the specification, and do not themselves have distinct meanings or roles. In addition, in describing the embodiments disclosed in the present specification, when it is determined that a detailed description of related known technologies may obscure the subject matter of the embodiments disclosed in the present specification, the detailed description thereof has been omitted.

Throughout the specification, when a part is said to be "connected (connected, contacted, or coupled)" with another part, it is not only "directly connected (connected, contacted, or bonded)", but also another member in the middle. It also includes the case of being "indirectly connected (connected, contacted or bonded)" between them. In addition, when a part is said to "include (equipment or prepare)" a certain component, it does not exclude other components, unless specifically stated to the contrary, but may further "include (equip or prepare)" other components. Means you can.

The terms used in this specification are used only to describe specific embodiments, and are not intended to limit the present invention. The expression in the singular includes a plurality of expressions unless the context clearly indicates otherwise, and components implemented in a distributed manner may be implemented in a combined form unless there is a specific limitation. In this specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance.

In addition, terms including ordinal numbers such as first and second used herein may be used to describe various elements, but the elements should not be limited by the terms. These terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

1 is a diagram showing detailed configurations of a photoelectric tube according to an embodiment of the present invention.

In the present specification, the photoelectric tube 100 is described as applicable to a boiler, but the photoelectric tube 100 is applied to all devices requiring flame detection, combustion status detection and determination, such as a heater, in addition to a boiler, and thus detects the flame of the corresponding device, detects the combustion state, and Can be used for judgment.

Referring to FIG. 1, the photoelectric tube 100 includes a case 110, a cap 120 that is embedded in the case 110 and has a locking portion 121 formed at one end thereof, and an anti-film 130 coupled to the locking portion 121, The optical sensor 140 coupled to the cap 120, a junction 170 formed at one end of the optical sensor 140, a wire 150 connected to the junction 170, and a connection terminal connected to the wire 150 ( 160).

In addition, the photoelectric tube 100 may further include a filler 113 formed inside the case 110 to surround the junction 170 and made of epoxy or urethane. By filling the inside of the case 110 with the filler, the optical sensor 140 and the junction 170 may be more firmly fixed.

Specifically, the case 110 may include a cylindrical head portion 112 similar to the cylindrical body portion 111. Here, the diameter of the main body 111 and the diameter of the head 112 may be different, for example, the case 110 may be formed so that the diameter of the main body 111 is larger than the diameter of the head 112 have.

In this way, by differentiating the diameter of the body part 111 and the diameter of the head part 112, the cap 120 can be formed to be in close contact with the inside of the head part 112.

In addition, the case 110 may be formed of a material such as plastic or rubber, and the cap 120 may be formed of a metal, but is not limited thereto. In addition, the case 110 and the cap 120 It can be formed of a material.

The prevention film 130 may be formed of glass, and by seating the prevention film 130 on the locking part 121, foreign substances, soot, etc. that may occur inside the photoelectric tube when the photoelectric tube 100 is used for a long time may be blocked. In addition, if the prevention film 130 is implemented in the form of a thin glass layer so that it can be coupled to the locking part 121, the above-described foreign matter, soot, etc. can be easily cleaned or removed, and the photoelectric tube 100 is broken or the sensitivity is changed. Etc. can be prevented.

Next, the wire 150 may include a first wire 151 and a second wire 152 formed in the same or different lengths, may further include a common wire 153, having elasticity It can be formed of a material. In addition, the connection terminal 160 may include a first terminal 161, a second terminal 162, and a third terminal 163 having the same or different sizes and shapes. The first terminal 161, the second terminal 162, and the third terminal 163 may have a + terminal, a-terminal, and a common terminal of the device, respectively.

FIG. 2 is a diagram schematically showing the configuration of an optical sensor according to an embodiment of the present invention, and FIG. 3 is a view illustrating optical elements constituting the optical sensor according to an embodiment of the present invention, 4 is a diagram showing a detailed configuration of a connection terminal according to an embodiment of the present invention.

The optical sensor 140 may include a plurality of optical devices having different amplification degrees. Here, the amplification degree means the ratio between the output and the input , and the optical device may mean an optical device in the form of an amplifier. The optical sensor 140 detects and/or determines a combustion state, and may be referred to as a combustion sensor.

2 and 3, the optical sensor 140 may include a first optical element 141 and a second optical element 142 having different amplification degrees, but is not necessarily composed of two optical elements. The sensor 140 may be formed in the form of two or more multistages so that each stage may include a plurality of optical devices having a plurality of different amplification degrees.

In addition, a common ground GND may be formed between the first optical device 141 and the second optical device 142.

In addition, the first optical device 141 and the second optical device 142 may be formed of a photo transistor or a photodiode, respectively. That is, as shown in FIG. 3, each of the first optical device 141 and the second optical device 142 may be configured to include a collector and an emitter.

In addition, the optical sensor 140 includes a first substrate (not shown) on which the first optical device 141 is formed, a second substrate (not shown) on which the second optical device 142 is formed, and a first substrate A first support (not shown) coupled to the first substrate and supporting the first optical element 141, and a second support coupled to the second substrate and supporting the second substrate and the second optical element 142 ( Not shown) may be included. Each of the substrates and the support may be formed in various shapes such as a cylindrical shape or a polygonal shape, and may be combined with other components to form the optical sensor 140 of a specific shape. for example. The optical sensor 140 may be formed in the shape as shown in FIG. 2.

An example is a case where the optical sensor 140 including the first optical element 141 and the second optical element 142, which are two optical elements having different amplification degrees, is applied to a boiler. Here, when an optical element having a low amplification degree among the first optical element 141 and the second optical element 142 is in a conductive state, the optical sensor 140 determines that the boiler is in a normal combustion state, and the first optical element 141 ) And the second optical device 142, if an optical device having a high amplification degree is in a conducting state and an optical device having a low amplification degree is in a non-conducting state, the optical sensor 140 may determine that the boiler is in an unstable combustion state.

In other words, when the amplification degree of the second optical element 142 is lower than the amplification degree of the first optical element 141, the optical sensor 140 indicates a state in which the second optical element 142 with a low amplification degree is conducting. 140) is judged as the normal combustion of the applied boiler. If the first optical element 141 having a higher amplification degree than the second optical element 142 is in a conducting state and the second optical element 142 is not in a conducting state, the optical sensor 140 determines that the boiler is unstable combustion.

Referring to FIG. 4 showing a detailed configuration of the connection terminal 160, the first terminal 161 and the second terminal 162 may have the same size and shape, or may be formed differently. For example, the first terminal 161 and the second terminal 162 may be formed in a symmetrical shape as shown in FIG. 4. In FIG. 4, the first terminal 161 and the second terminal 162 are shown in a circular shape, but the shapes of the first terminal 161 and the second terminal 162 are not limited thereto.

5 is a block diagram showing the configuration of a combustion control system according to another embodiment of the present invention.

Since the optical sensor 502 shown in FIG. 5 is the same component as the photoelectric tube 100 described with reference to FIGS. 1 to 4 above, a description thereof will be replaced with the description of the photoelectric tube 100 described above and will be omitted below. do

The combustion control system 500 may be applied to a heating device requiring combustion such as the boiler 501 and/or a heater to determine and control the combustion state of the corresponding device.

Referring to FIG. 5, the combustion control system 500 includes an optical sensor 502 for detecting and determining a combustion state of the boiler 501, a gas valve 507 for controlling gas flowing into the boiler 501, and a boiler. When the exhaust fan 506 that provides wind to 501, and the optical sensor 502 determines the combustion state of the boiler 501 as unstable combustion, the gas valve 507 is controlled to flow into the boiler 501. It includes a control unit 505 that controls the amount of gas and controls the exhaust fan 506 to control the amount of air flowing into the boiler 501 so that the optical sensor 502 determines the combustion state of the boiler 501 as stable combustion.

In addition, the combustion control system 500 includes a temperature sensor 503 for sensing the temperature of the boiler 501, a water level sensor 504 for sensing the water level of the boiler 501, and a water level controller 509 for adjusting the water level. It may be implemented in a form that further includes components applied to the boiler 501, such as the pump 508.

In this way, the combustion control system 500 may control the combustion state of the boiler so that the combustion state is optimal according to the type of gas such as LPG and LNG and changes in the condition of the boiler.

The description of the present invention described above is for illustration purposes only, and those of ordinary skill in the technical field to which the present invention belongs can understand that it is possible to easily transform it into other specific forms without changing the technical idea or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting. The scope of the present invention is indicated by the claims to be described later, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

100: photoelectric tube 110: case
111: main body 112: head
113: filler 120: cap
121: locking portion 130: prevention film
140: optical sensor
141: first optical element 142: second optical element
143: Common (GND)
150: wire
151: first wire 152: second wire
153: common (GND) wire
160: connection terminal
161: first terminal 162: second terminal
163: 3rd terminal

Claims (7)

In the photoelectric tube applicable to the boiler,
A case made of plastic or rubber, a cap formed of metal, embedded in the case, a cap having a locking part at one end, a prevention film formed of glass, a first optical element coupled to the cap and having different amplification degrees, and a second An optical sensor including an optical element, a junction formed at one end of the optical sensor, a wire connected to the junction, and a connection terminal connected to the wire,
The second optical device has a lower amplification degree than that of the first optical device, and becomes conductive in normal combustion combustion and non-conductive in incomplete combustion,
The photoelectric tube, wherein the first optical device has a lower amplification degree than that of the first optical device and is in a conductive state in incomplete combustion.
The method of claim 1,
A photoelectric tube, characterized in that it further comprises a filler formed in the case to surround the junction and made of epoxy or urethane.
The method of claim 1,
The case is formed of a cylindrical body portion and a head portion, wherein the diameter of the body portion is a photoelectric tube, characterized in that larger than the diameter of the head portion.
delete The method of claim 1,
The photoelectric tube, characterized in that the first optical device and the second optical device are each composed of a photo transistor or a photodiode.
delete As a combustion control system applicable to a boiler,
The photoelectric tube according to any one of claims 1 to 3 and 5;
A gas valve for controlling gas flowing into the boiler;
An exhaust fan providing wind to the boiler; And
When the second optical element is in a conducting state, it is determined as normal combustion, when the second optical element is in a non-conducting state and the first optical element is in a conducting state, it is determined as incomplete combustion, and when the combustion state of the boiler is determined as unstable combustion, the gas And a control unit for controlling the amount of gas flowing into the boiler by controlling a valve and controlling the exhaust fan to control the amount of air flowing into the boiler so that the photoelectric tube determines stable combustion.

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