Manual air control device for gas burner

Abstract

The present disclosure relates to a manual air control device for a gas burner including a handle; a handle drive shaft connected to the handle; a first moving block and a second moving block coupled to the handle drive shaft at positions spaced apart from each other; a first horizontal frame connecting the first moving block and an upper door; and a second horizontal frame connecting the second moving block and a lower door. According to the operation of the handle, the first and second moving blocks move toward or away from each other, thereby adjusting an air passage channel formed between the upper door and the lower door.

Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application claims the benefit under 35 U.S.C. §119(a) of Korean Patent Application No. 10-2025-0013611, filed on February 4, 2025, the entire disclosure of which is incorporated herein by reference for all purposes.BACKGROUND1. Field

[0002] The present disclosure relates to a device for manually controlling air supplied to a gas burner.2. Description of Related Art

[0003] FIG. 1 is a diagram illustrating the configuration of a conventional gas burner.

[0004] Referring to FIG. 1, a gas burner 10 includes a gas chamber 20 connected to a branch pipe branched from a gas manifold. A burner unit 40 having a nozzle is configured to be connected to another side of the gas chamber 20 via a gas supply pipe 30, allowing the gas burner 10 to be operated by a device manipulated by an operator.

[0005] The gas burner 10 removes moisture from air by means of the burner unit 40 formed on one side within the gas chamber 20. For example, gas supplied through the gas supply pipe 30 is ignited by the burner unit 40 located inside the gas chamber 20. During this process, air is drawn into the rear side of the burner unit 40 to enable smooth ignition. That is, during ignition through the burner unit 40, it is important to introduce secondary air from outside to facilitate complete combustion of the gas burner 10.

[0006] As described above, although air is essential for gas combustion in the gas burner, there are cases in which the amount of air drawn in is insufficient relative to the amount of gas supplied to the nozzle. In such cases, the combustion efficiency of the gas is reduced, resulting not only in lower heating performance but also in the generation of harmful gases due to incomplete combustion. Therefore, it is necessary to ensure that an appropriate amount of air is supplied to the burner unit 40.

[0007] As related prior art, Korean Patent No. 10-1272848 has been disclosed.SUMMARY

[0008] An object of the present disclosure is to provide a manual air control device that allows adjustment of the air flow rate while the gas burner is in operation.

[0009] Another object of the present disclosure is to provide a manual air control device capable of easily adjusting the air flow rate by simultaneously controlling vertically arranged doors through a single handle operation.

[0010] Another object of the present disclosure is to provide a manual air control device that enables easy confirmation of the degree of door opening.

[0011] The technical problems of the present disclosure are not limited to those described above, and other technical problems not specifically mentioned will be clearly understood by those skilled in the art from the following description.

[0012] In one general aspect, a manual air control device for a gas burner is installed in a gas chamber, and the manual air control device includes: a handle; a handle drive shaft connected to the handle; a first moving block and a second moving block coupled to the handle drive shaft and spaced apart from each other; a first horizontal frame connecting the first moving block to an upper door; and a second horizontal frame connecting the second moving block to a lower door. The upper door and the lower door are moved in response to operation of the handle to adjust an air passage channel formed between the upper door and the lower door.

[0013] At opposite sides of the first moving block and the second moving block, respectively, fixed dampers may be mounted on the handle drive shaft with a spacing therebetween. The fixed dampers may be configured to limit movement of the first moving block and the second moving block that move in response to operation of the handle.

[0014] The fixed dampers may include first fixed dampers and second fixed dampers. The first fixed dampers may include a fixed bracket 1-1 and a fixed bracket 1-2, spaced apart from each other and mounted at opposite sides of the first moving block. The second fixed dampers may include a fixed bracket 2-1 and a fixed bracket 2-2, spaced apart from each other and mounted at opposite sides of the second moving block.

[0015] Another end of the handle drive shaft may be supported by a support unit provided on an inner surface of the gas chamber. The support unit is equipped with a rotatable bearing.

[0016] Guide grooves of a predetermined length may be formed in the upper door and the lower door. The guide grooves may guide movement of the upper door and the lower door in a state in which a fixing pin provided on a fixed panel is inserted into the guide grooves.

[0017] The manual air control device for a gas burner of claim 1 may further include a display unit configured to indicate a state of an air passage channel between the upper door and the lower door in response to operation of the handle.

[0018] The first moving block and the second moving block may move simultaneously in directions approaching or distancing from each other in response to operation of the handle.

[0019] According to the present disclosure, the operator can monitor the air flow rate while the gas burner is in operation and, if adjustment is required, can conveniently adjust the air flow rate from outside via a simple handle operation, thereby enabling complete combustion of the gas burner.

[0020] According to the present disclosure, the movement of the upper and lower doors, which define the air passage channel, can be controlled through a single handle operation.

[0021] According to the present disclosure, the movement range of the upper and lower doors can be limited by a fixed damper mounted on the handle drive shaft, thereby preventing the doors from opening beyond the necessary range.BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG. 1 is a diagram showing the configuration of a conventional gas burner.

[0023] FIG. 2 is a diagram illustrating the configuration of a gas burner according to an embodiment of the present disclosure.

[0024] FIG. 3 is a diagram specifically illustrating a manual air control device provided in a gas chamber.

[0025] FIG. 4 is a diagram for explaining the movement of an upper door and a lower door.DETAILED DESCRIPTION

[0026] The present disclosure is subject to various modifications and may have a number of different embodiments. Specific embodiments are illustrated in the drawings and will be described in detail below. However, this is not intended to limit the present disclosure to the particular embodiments, and it is to be understood that all modifications, equivalents, and substitutions falling within the spirit and scope of the present disclosure are encompassed. In describing the present disclosure, detailed descriptions of well-known technologies may be omitted when it is determined that such descriptions could obscure the essence of the present disclosure.

[0027] Terms such as “first,”“second,” and the like may be used to describe various components, but such components should not be construed as being limited by these terms. These terms are used solely to distinguish one component from another.

[0028] The terminology used in the present disclosure is intended solely to describe particular embodiments and is not intended to limit the scope of the invention. Unless clearly stated otherwise in the context, the singular forms also include the plural forms. In the present application, terms such as “comprise”“include” and “have” are intended to indicate the presence of stated features, numbers, steps, operations, elements, components, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof.

[0029] Spatially relative terms, such as “below,”“beneath,”“lower,”“above,” and “upper,” may be used to describe relationships between components or elements as illustrated in the drawings. These terms are intended to facilitate the description of spatial relationships between elements and are not intended to be limiting. It should be understood that such terms may include orientations different from those shown in the drawings when a device is in use or in operation. For example, if an element shown in the drawings is flipped, an element described as “below” or “beneath” another element may instead be “above” that element. Accordingly, the term “below,” as used herein, may encompass both upward and downward directions. Elements may be oriented differently in actual implementation, and spatially relative terms should be interpreted accordingly.

[0030] Expressions such as “unit,”“part,” or other terms indicating portions used in the present disclosure may refer to a device that performs a specific function, software that performs the function, or a combination of such device and software. However, such expressions are not intended to be limited solely to the functions expressly stated. These descriptions are provided to facilitate a more comprehensive understanding of the present disclosure, and it will be apparent to those skilled in the art that various modifications and alterations may be made based on the disclosed content.

[0031] Accordingly, the spirit of the present disclosure should not be construed as being limited to the described embodiments, and it is to be understood that all equivalents and equivalent modifications that fall within the scope of the following claims are also encompassed within the scope of the present disclosure.

[0032] Hereinafter, the present disclosure will be described in further detail based on the embodiments illustrated in the drawings.

[0033] The present disclosure may provide a configuration in which a manual air control device assembly (101, FIG. 2), configured to manually open and close upper and lower doors to control air supply, is additionally mounted on an existing gas burner. Alternatively, the present disclosure may provide a gas burner in which the manual air control device is integrally installed.

[0034] FIG. 2 is a perspective view illustrating a gas burner according to an embodiment of the present disclosure.

[0035] Referring to FIG. 2, a gas burner 100 according to an embodiment of the present disclosure includes a gas chamber 20 connected to a branch pipe branched from a gas manifold. A burner unit 40 having a nozzle is connected to another side of the gas chamber 20 via a gas supply pipe 30. The burner unit 40 is operated by a device manipulated by the operator and may be installed inside the gas chamber 20. The gas burner 100 further includes upper and lower doors 160 and 170 (see FIG. 3) mounted on one side of the gas chamber 20 to move in the vertical direction, thereby supplying and regulating air to the burner unit 40. The upper and lower doors 160 and 170 are vertically moved by a manual air control device described below, so that the height of an air passage can be adjusted.

[0036] According to the present embodiment, the gas burner 100 includes a manual air control device assembly 101 configured to move the upper and lower doors. The manual air control device assembly 101 allows the operator to easily set the air flow rate by adjusting the opening degree of the upper and lower doors 160 and 170—i.e., the size of an air passage channel A—while the gas burner 100 is in operation. The manual air control device assembly 101 may include components configured to vertically move the upper and lower doors 160 and 170 simultaneously in upward and downward directions, respectively, in response to handle operation.

[0037] The manual air control device assembly 101 will now be described with reference to FIG. 3. FIG. 3 is a detailed view illustrating the manual air control device assembly 101 provided in the gas chamber 20

[0038] Referring to FIGS. 2 and 3, the manual air control device assembly 101 includes an upper door 160 and a lower door 170 mounted to a fixed panel of the gas chamber 20 As the upper door 160 and the lower door 170 move, they adjust an air passage channel A formed through an opening in the fixed panel. An air flow rate is regulated according to the size of the air passage channel defined by this opening.

[0039] The manual air control device assembly 101 may include a handle 110, a handle drive shaft 120, a first moving block 130-1 and a second moving block 130-2, first fixed dampers 140-1 and 140-2, second fixed dampers 150-1 and 150-2, a first horizontal frame 150-3, and a second horizontal frame 150-4.

[0040] The handle 110 is mounted on an outer surface of the gas chamber 20 so that it can be easily manipulated by the operator. According to an embodiment, a single handle 110 may be mounted on an upper surface or a side surface of the gas chamber 20. The upper door 160 and the lower door 170 can be moved simultaneously in upward and downward directions by operating only the handle 110.

[0041] The handle drive shaft 120 has one end connected to the handle 110, and the other end is supported by a support unit 111 provided on an inner surface of the gas chamber 20. The support unit 111 includes a rotatable bearing, allowing the handle drive shaft 120 to rotate in response to operation of the handle 110. The handle drive shaft 120 may be formed with a first screw thread and a second screw thread in opposite directions with respect to a central region thereof. Depending on the rotational direction of the handle 110, the handle drive shaft 120 rotates in a forward direction (first direction) or a reverse direction (second direction), causing the first moving block 130-1 and the second moving block 130-2 mounted on the handle drive shaft 120 to move toward or away from each other. This configuration allows the upper door 160 and the lower door 170 to be moved simultaneously using the single handle.

[0042] The first moving block 130-1 and the second moving block 130-2 may be mounted on the handle drive shaft 120 and are configured to move along the handle drive shaft 120 in response to operation of the handle 110. For example, when the handle 110 is rotated in a forward direction (first direction), the first moving block 130-1 and the second moving block 130-2 move toward each other. When the handle 110 is rotated in a reverse direction (second direction), the first moving block 130-1 and the second moving block 130-2 move away from each other. Accordingly, when the handle 110 is rotated in the forward direction, the upper door 160 and the lower door 170 move closer together, narrowing the air passage channel. Conversely, when the handle 110 is rotated in the reverse direction, the upper door 160 and the lower door 170 move farther apart, widening the air passage channel.

[0043] The first fixed dampers 140-1 and 140-2 and the second fixed dampers 150-1 and 150-2 may be fixedly fitted onto the handle drive shaft 120. The first and second fixed dampers may serve to limit the range of movement of the first moving block 130-1 and the second moving block 130-2, respectively. Specifically, the first and second fixed dampers may each include a pair of fixed brackets: namely, the first fixed damper 140-1 may include a fixed bracket 1-1; the first fixed damper 140-2 may include a fixed bracket 1-2; the second fixed damper 150-1 may include a fixed bracket 2-1; and the second fixed damper 150-2 may include a fixed bracket 2-2. The fixed bracket 1-1 (140-1) and the fixed bracket 1-2 (140-2) are spaced apart from each other and fixedly fitted to the handle drive shaft 120, thereby allowing the first moving block 130-1 to move only within a predetermined range. Similarly, the fixed bracket 2-1 (150-1) and the fixed bracket 2-2 (150-2) are spaced apart from each other and fixedly fitted to the handle drive shaft 120, thereby allowing the second moving block 130-2 to move only within a predetermined range. The respective movement ranges of the first and second moving blocks correspond to the movement ranges of the upper door 160 and the lower door 170, and accordingly, the degree of opening of the air passage channel can be adjusted.

[0044] The first horizontal frame 150-3 connects the first moving block 130-1 to the upper door 160 and enables the upper door 160 to move upward and downward in response to the movement of the first moving block 130-1.

[0045] The second horizontal frame 150-4 connects the second moving block 130-2 to the lower door 170 and enables the lower door 170 to move upward and downward in response to the movement of the second moving block 130-2.

[0046] FIG. 4 is a diagram for illustrating the movement of the upper door and the lower door.

[0047] According to the present embodiment, an upper door 160 and a lower door 170 are mounted on a fixed panel and are configured to be movable in the vertical direction in response to operation of a handle 110.

[0048] As shown in FIG. 4, the upper door 160 and the lower door 170 are formed with guide grooves 180. Each guide groove 180 extends a predetermined length in the vertical direction of the upper door 160 and the lower door 170, and for stable movement, two guide grooves are formed on each door.

[0049] A fixing pin 190 formed on the fixed panel is inserted into each guide groove 180. The fixing pin 190 is secured to the fixed panel, and accordingly, when the handle 110 is operated, the guide grooves 180 of the upper door 160 and the lower door 170 move upward and downward along the fixing pin 190. If the upper door 160 and the lower door 170 are not provided with the guide grooves 180, the doors would have to be moved solely by the movement of a first horizontal frame 150-3 and a second horizontal frame 150-4, which may result in unstable movement.

[0050] According to an embodiment of the present disclosure, a display unit (not shown) indicating the operation state of the handle may be included. The display unit may serve as an indicator showing the degree of opening of the air passage channel in response to the handle operation. The display unit may be provided in various forms, such as numbers, scales, dials, or indicators. Through the information shown on the display unit, the operator can recognize the rotational position of the handle and accordingly determine the degree to which the upper door 160 and the lower door 170 are opened or closed. This allows for easy adjustment of the air flow rate.

[0051] According to this configuration, the operator may determine whether to adjust the air flow rate while checking the combustion state of the gas burner 110 through an inspection port. Based on that determination, if the air flow needs to be increased or decreased, the operator manipulates the handle 110 to simultaneously move the upper door 160 and the lower door 170. As the upper door 160 and the lower door 170 move, the air passage channel is adjusted, thereby regulating the air flow rate. This air flow adjustment can be performed while the gas burner100 is in operation.

[0052] As described above, the present disclosure enables the upper door and the lower door, which form the air passage channel, to move simultaneously in the vertical direction by simply operating the handle. Accordingly, the operator can easily adjust the air flow rate while the gas burner is operating.

[0053] While this disclosure includes specific examples, it will be apparent after an understanding of the disclosure of this application that various changes in form and details may be made in these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein are to be considered in a descriptive sense only, and not for purposes of limitation. Descriptions of features or aspects in each example are to be considered as being applicable to similar features or aspects in other examples. Suitable results may be achieved if the described techniques are performed in a different order, and / or if components in a described system, architecture, device, or circuit are combined in a different manner, and / or replaced or supplemented by other components or their equivalents. Therefore, the scope of the disclosure is defined not by the detailed description, but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents are to be construed as being included in the disclosure.

Examples

Embodiment Construction

[0026] The present disclosure is subject to various modifications and may have a number of different embodiments. Specific embodiments are illustrated in the drawings and will be described in detail below. However, this is not intended to limit the present disclosure to the particular embodiments, and it is to be understood that all modifications, equivalents, and substitutions falling within the spirit and scope of the present disclosure are encompassed. In describing the present disclosure, detailed descriptions of well-known technologies may be omitted when it is determined that such descriptions could obscure the essence of the present disclosure.

[0027] Terms such as “first,”“second,” and the like may be used to describe various components, but such components should not be construed as being limited by these terms. These terms are used solely to distinguish one component from another.

[0028] The terminology used in the present disclosure is intended solely to describe particular...

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application claims the benefit under 35 U.S.C. §119(a) of Korean Patent Application No. 10-2025-0013611, filed on February 4, 2025, the entire disclosure of which is incorporated herein by reference for all purposes.BACKGROUND1. Field

[0002] The present disclosure relates to a device for manually controlling air supplied to a gas burner.2. Description of Related Art

[0003] FIG. 1 is a diagram illustrating the configuration of a conventional gas burner.

[0004] Referring to FIG. 1, a gas burner 10 includes a gas chamber 20 connected to a branch pipe branched from a gas manifold. A burner unit 40 having a nozzle is configured to be connected to another side of the gas chamber 20 via a gas supply pipe 30, allowing the gas burner 10 to be operated by a device manipulated by an operator.

[0005] The gas burner 10 removes moisture from air by means of the burner unit 40 formed on one side within the gas chamber 20. For example, gas supplied through the gas supply pipe 30 is ignited by the burner unit 40 located inside the gas chamber 20. During this process, air is drawn into the rear side of the burner unit 40 to enable smooth ignition. That is, during ignition through the burner unit 40, it is important to introduce secondary air from outside to facilitate complete combustion of the gas burner 10.

[0006] As described above, although air is essential for gas combustion in the gas burner, there are cases in which the amount of air drawn in is insufficient relative to the amount of gas supplied to the nozzle. In such cases, the combustion efficiency of the gas is reduced, resulting not only in lower heating performance but also in the generation of harmful gases due to incomplete combustion. Therefore, it is necessary to ensure that an appropriate amount of air is supplied to the burner unit 40.

[0007] As related prior art, Korean Patent No. 10-1272848 has been disclosed.SUMMARY

[0008] An object of the present disclosure is to provide a manual air control device that allows adjustment of the air flow rate while the gas burner is in operation.

[0009] Another object of the present disclosure is to provide a manual air control device capable of easily adjusting the air flow rate by simultaneously controlling vertically arranged doors through a single handle operation.

[0010] Another object of the present disclosure is to provide a manual air control device that enables easy confirmation of the degree of door opening.

[0011] The technical problems of the present disclosure are not limited to those described above, and other technical problems not specifically mentioned will be clearly understood by those skilled in the art from the following description.

[0012] In one general aspect, a manual air control device for a gas burner is installed in a gas chamber, and the manual air control device includes: a handle; a handle drive shaft connected to the handle; a first moving block and a second moving block coupled to the handle drive shaft and spaced apart from each other; a first horizontal frame connecting the first moving block to an upper door; and a second horizontal frame connecting the second moving block to a lower door. The upper door and the lower door are moved in response to operation of the handle to adjust an air passage channel formed between the upper door and the lower door.

[0013] At opposite sides of the first moving block and the second moving block, respectively, fixed dampers may be mounted on the handle drive shaft with a spacing therebetween. The fixed dampers may be configured to limit movement of the first moving block and the second moving block that move in response to operation of the handle.

[0014] The fixed dampers may include first fixed dampers and second fixed dampers. The first fixed dampers may include a fixed bracket 1-1 and a fixed bracket 1-2, spaced apart from each other and mounted at opposite sides of the first moving block. The second fixed dampers may include a fixed bracket 2-1 and a fixed bracket 2-2, spaced apart from each other and mounted at opposite sides of the second moving block.

[0015] Another end of the handle drive shaft may be supported by a support unit provided on an inner surface of the gas chamber. The support unit is equipped with a rotatable bearing.

[0016] Guide grooves of a predetermined length may be formed in the upper door and the lower door. The guide grooves may guide movement of the upper door and the lower door in a state in which a fixing pin provided on a fixed panel is inserted into the guide grooves.

[0017] The manual air control device for a gas burner of claim 1 may further include a display unit configured to indicate a state of an air passage channel between the upper door and the lower door in response to operation of the handle.

[0018] The first moving block and the second moving block may move simultaneously in directions approaching or distancing from each other in response to operation of the handle.

[0019] According to the present disclosure, the operator can monitor the air flow rate while the gas burner is in operation and, if adjustment is required, can conveniently adjust the air flow rate from outside via a simple handle operation, thereby enabling complete combustion of the gas burner.

[0020] According to the present disclosure, the movement of the upper and lower doors, which define the air passage channel, can be controlled through a single handle operation.

[0021] According to the present disclosure, the movement range of the upper and lower doors can be limited by a fixed damper mounted on the handle drive shaft, thereby preventing the doors from opening beyond the necessary range.BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG. 1 is a diagram showing the configuration of a conventional gas burner.

[0023] FIG. 2 is a diagram illustrating the configuration of a gas burner according to an embodiment of the present disclosure.

[0024] FIG. 3 is a diagram specifically illustrating a manual air control device provided in a gas chamber.

[0025] FIG. 4 is a diagram for explaining the movement of an upper door and a lower door.DETAILED DESCRIPTION

[0026] The present disclosure is subject to various modifications and may have a number of different embodiments. Specific embodiments are illustrated in the drawings and will be described in detail below. However, this is not intended to limit the present disclosure to the particular embodiments, and it is to be understood that all modifications, equivalents, and substitutions falling within the spirit and scope of the present disclosure are encompassed. In describing the present disclosure, detailed descriptions of well-known technologies may be omitted when it is determined that such descriptions could obscure the essence of the present disclosure.

[0027] Terms such as “first,”“second,” and the like may be used to describe various components, but such components should not be construed as being limited by these terms. These terms are used solely to distinguish one component from another.

[0028] The terminology used in the present disclosure is intended solely to describe particular embodiments and is not intended to limit the scope of the invention. Unless clearly stated otherwise in the context, the singular forms also include the plural forms. In the present application, terms such as “comprise”“include” and “have” are intended to indicate the presence of stated features, numbers, steps, operations, elements, components, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof.

[0029] Spatially relative terms, such as “below,”“beneath,”“lower,”“above,” and “upper,” may be used to describe relationships between components or elements as illustrated in the drawings. These terms are intended to facilitate the description of spatial relationships between elements and are not intended to be limiting. It should be understood that such terms may include orientations different from those shown in the drawings when a device is in use or in operation. For example, if an element shown in the drawings is flipped, an element described as “below” or “beneath” another element may instead be “above” that element. Accordingly, the term “below,” as used herein, may encompass both upward and downward directions. Elements may be oriented differently in actual implementation, and spatially relative terms should be interpreted accordingly.

[0030] Expressions such as “unit,”“part,” or other terms indicating portions used in the present disclosure may refer to a device that performs a specific function, software that performs the function, or a combination of such device and software. However, such expressions are not intended to be limited solely to the functions expressly stated. These descriptions are provided to facilitate a more comprehensive understanding of the present disclosure, and it will be apparent to those skilled in the art that various modifications and alterations may be made based on the disclosed content.

[0031] Accordingly, the spirit of the present disclosure should not be construed as being limited to the described embodiments, and it is to be understood that all equivalents and equivalent modifications that fall within the scope of the following claims are also encompassed within the scope of the present disclosure.

[0032] Hereinafter, the present disclosure will be described in further detail based on the embodiments illustrated in the drawings.

[0033] The present disclosure may provide a configuration in which a manual air control device assembly (101, FIG. 2), configured to manually open and close upper and lower doors to control air supply, is additionally mounted on an existing gas burner. Alternatively, the present disclosure may provide a gas burner in which the manual air control device is integrally installed.

[0034] FIG. 2 is a perspective view illustrating a gas burner according to an embodiment of the present disclosure.

[0035] Referring to FIG. 2, a gas burner 100 according to an embodiment of the present disclosure includes a gas chamber 20 connected to a branch pipe branched from a gas manifold. A burner unit 40 having a nozzle is connected to another side of the gas chamber 20 via a gas supply pipe 30. The burner unit 40 is operated by a device manipulated by the operator and may be installed inside the gas chamber 20. The gas burner 100 further includes upper and lower doors 160 and 170 (see FIG. 3) mounted on one side of the gas chamber 20 to move in the vertical direction, thereby supplying and regulating air to the burner unit 40. The upper and lower doors 160 and 170 are vertically moved by a manual air control device described below, so that the height of an air passage can be adjusted.

[0036] According to the present embodiment, the gas burner 100 includes a manual air control device assembly 101 configured to move the upper and lower doors. The manual air control device assembly 101 allows the operator to easily set the air flow rate by adjusting the opening degree of the upper and lower doors 160 and 170—i.e., the size of an air passage channel A—while the gas burner 100 is in operation. The manual air control device assembly 101 may include components configured to vertically move the upper and lower doors 160 and 170 simultaneously in upward and downward directions, respectively, in response to handle operation.

[0037] The manual air control device assembly 101 will now be described with reference to FIG. 3. FIG. 3 is a detailed view illustrating the manual air control device assembly 101 provided in the gas chamber 20

[0038] Referring to FIGS. 2 and 3, the manual air control device assembly 101 includes an upper door 160 and a lower door 170 mounted to a fixed panel of the gas chamber 20 As the upper door 160 and the lower door 170 move, they adjust an air passage channel A formed through an opening in the fixed panel. An air flow rate is regulated according to the size of the air passage channel defined by this opening.

[0039] The manual air control device assembly 101 may include a handle 110, a handle drive shaft 120, a first moving block 130-1 and a second moving block 130-2, first fixed dampers 140-1 and 140-2, second fixed dampers 150-1 and 150-2, a first horizontal frame 150-3, and a second horizontal frame 150-4.

[0040] The handle 110 is mounted on an outer surface of the gas chamber 20 so that it can be easily manipulated by the operator. According to an embodiment, a single handle 110 may be mounted on an upper surface or a side surface of the gas chamber 20. The upper door 160 and the lower door 170 can be moved simultaneously in upward and downward directions by operating only the handle 110.

[0041] The handle drive shaft 120 has one end connected to the handle 110, and the other end is supported by a support unit 111 provided on an inner surface of the gas chamber 20. The support unit 111 includes a rotatable bearing, allowing the handle drive shaft 120 to rotate in response to operation of the handle 110. The handle drive shaft 120 may be formed with a first screw thread and a second screw thread in opposite directions with respect to a central region thereof. Depending on the rotational direction of the handle 110, the handle drive shaft 120 rotates in a forward direction (first direction) or a reverse direction (second direction), causing the first moving block 130-1 and the second moving block 130-2 mounted on the handle drive shaft 120 to move toward or away from each other. This configuration allows the upper door 160 and the lower door 170 to be moved simultaneously using the single handle.

[0042] The first moving block 130-1 and the second moving block 130-2 may be mounted on the handle drive shaft 120 and are configured to move along the handle drive shaft 120 in response to operation of the handle 110. For example, when the handle 110 is rotated in a forward direction (first direction), the first moving block 130-1 and the second moving block 130-2 move toward each other. When the handle 110 is rotated in a reverse direction (second direction), the first moving block 130-1 and the second moving block 130-2 move away from each other. Accordingly, when the handle 110 is rotated in the forward direction, the upper door 160 and the lower door 170 move closer together, narrowing the air passage channel. Conversely, when the handle 110 is rotated in the reverse direction, the upper door 160 and the lower door 170 move farther apart, widening the air passage channel.

[0043] The first fixed dampers 140-1 and 140-2 and the second fixed dampers 150-1 and 150-2 may be fixedly fitted onto the handle drive shaft 120. The first and second fixed dampers may serve to limit the range of movement of the first moving block 130-1 and the second moving block 130-2, respectively. Specifically, the first and second fixed dampers may each include a pair of fixed brackets: namely, the first fixed damper 140-1 may include a fixed bracket 1-1; the first fixed damper 140-2 may include a fixed bracket 1-2; the second fixed damper 150-1 may include a fixed bracket 2-1; and the second fixed damper 150-2 may include a fixed bracket 2-2. The fixed bracket 1-1 (140-1) and the fixed bracket 1-2 (140-2) are spaced apart from each other and fixedly fitted to the handle drive shaft 120, thereby allowing the first moving block 130-1 to move only within a predetermined range. Similarly, the fixed bracket 2-1 (150-1) and the fixed bracket 2-2 (150-2) are spaced apart from each other and fixedly fitted to the handle drive shaft 120, thereby allowing the second moving block 130-2 to move only within a predetermined range. The respective movement ranges of the first and second moving blocks correspond to the movement ranges of the upper door 160 and the lower door 170, and accordingly, the degree of opening of the air passage channel can be adjusted.

[0044] The first horizontal frame 150-3 connects the first moving block 130-1 to the upper door 160 and enables the upper door 160 to move upward and downward in response to the movement of the first moving block 130-1.

[0045] The second horizontal frame 150-4 connects the second moving block 130-2 to the lower door 170 and enables the lower door 170 to move upward and downward in response to the movement of the second moving block 130-2.

[0046] FIG. 4 is a diagram for illustrating the movement of the upper door and the lower door.

[0047] According to the present embodiment, an upper door 160 and a lower door 170 are mounted on a fixed panel and are configured to be movable in the vertical direction in response to operation of a handle 110.

[0048] As shown in FIG. 4, the upper door 160 and the lower door 170 are formed with guide grooves 180. Each guide groove 180 extends a predetermined length in the vertical direction of the upper door 160 and the lower door 170, and for stable movement, two guide grooves are formed on each door.

[0049] A fixing pin 190 formed on the fixed panel is inserted into each guide groove 180. The fixing pin 190 is secured to the fixed panel, and accordingly, when the handle 110 is operated, the guide grooves 180 of the upper door 160 and the lower door 170 move upward and downward along the fixing pin 190. If the upper door 160 and the lower door 170 are not provided with the guide grooves 180, the doors would have to be moved solely by the movement of a first horizontal frame 150-3 and a second horizontal frame 150-4, which may result in unstable movement.

[0050] According to an embodiment of the present disclosure, a display unit (not shown) indicating the operation state of the handle may be included. The display unit may serve as an indicator showing the degree of opening of the air passage channel in response to the handle operation. The display unit may be provided in various forms, such as numbers, scales, dials, or indicators. Through the information shown on the display unit, the operator can recognize the rotational position of the handle and accordingly determine the degree to which the upper door 160 and the lower door 170 are opened or closed. This allows for easy adjustment of the air flow rate.

[0051] According to this configuration, the operator may determine whether to adjust the air flow rate while checking the combustion state of the gas burner 110 through an inspection port. Based on that determination, if the air flow needs to be increased or decreased, the operator manipulates the handle 110 to simultaneously move the upper door 160 and the lower door 170. As the upper door 160 and the lower door 170 move, the air passage channel is adjusted, thereby regulating the air flow rate. This air flow adjustment can be performed while the gas burner100 is in operation.

[0052] As described above, the present disclosure enables the upper door and the lower door, which form the air passage channel, to move simultaneously in the vertical direction by simply operating the handle. Accordingly, the operator can easily adjust the air flow rate while the gas burner is operating.

[0053] While this disclosure includes specific examples, it will be apparent after an understanding of the disclosure of this application that various changes in form and details may be made in these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein are to be considered in a descriptive sense only, and not for purposes of limitation. Descriptions of features or aspects in each example are to be considered as being applicable to similar features or aspects in other examples. Suitable results may be achieved if the described techniques are performed in a different order, and / or if components in a described system, architecture, device, or circuit are combined in a different manner, and / or replaced or supplemented by other components or their equivalents. Therefore, the scope of the disclosure is defined not by the detailed description, but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents are to be construed as being included in the disclosure.

Examples

Embodiment Construction

[0026] The present disclosure is subject to various modifications and may have a number of different embodiments. Specific embodiments are illustrated in the drawings and will be described in detail below. However, this is not intended to limit the present disclosure to the particular embodiments, and it is to be understood that all modifications, equivalents, and substitutions falling within the spirit and scope of the present disclosure are encompassed. In describing the present disclosure, detailed descriptions of well-known technologies may be omitted when it is determined that such descriptions could obscure the essence of the present disclosure.

[0027] Terms such as “first,”“second,” and the like may be used to describe various components, but such components should not be construed as being limited by these terms. These terms are used solely to distinguish one component from another.

[0028] The terminology used in the present disclosure is intended solely to describe particular...

Claims

1. A manual air control device for a gas burner, the device being installed in a gas chamber, the device comprising:a handle;a handle drive shaft connected to the handle;a first moving block and a second moving block coupled to the handle drive shaft and spaced apart from each other;a first horizontal frame connecting the first moving block to an upper door; anda second horizontal frame connecting the second moving block to a lower door,wherein the upper door and the lower door are moved in response to operation of the handle to adjust an air passage channel formed between the upper door and the lower door.

2. The manual air control device for a gas burner of claim 1,wherein fixed dampers are spaced apart from each other and mounted on the handle drive shaft at opposite sides of the first moving block and the second moving block, respectively,the fixed dampers being configured to limit movement of the first moving block and the second moving block that move in response to operation of the handle.

3. The manual air control device for a gas burner of claim 2,wherein the fixed dampers comprise first fixed dampers and second fixed dampers,the first fixed dampers comprising a fixed bracket 1-1 and a fixed bracket 1-2, spaced apart from each other and mounted at opposite sides of the first moving block, andthe second fixed dampers comprising a fixed bracket 2-1 and a fixed bracket 2-2, spaced apart from each other and mounted at opposite sides of the second moving block.

4. The manual air control device for a gas burner of claim 1, wherein an other end of the handle drive shaft is supported by a support unit provided on an inner surface of the gas chamber, the support unit being equipped with a rotatable bearing.

5. The manual air control device for a gas burner of claim 1,wherein guide grooves of a predetermined length are formed in the upper door and the lower door,the guide grooves guiding movement of the upper door and the lower door in a state in which a fixing pin provided on a fixed panel is inserted into the guide grooves.

6. The manual air control device for a gas burner of claim 1, further comprising:a display unit configured to indicate a state of an air passage channel between the upper door and the lower door in response to operation of the handle.

7. The manual air control device for a gas burner of claim 1,wherein the first moving block and the second moving block move simultaneously in directions approaching or distancing from each other in response to operation of the handle.

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