JP3760138B2 - Air conditioner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air conditioner that adjusts the amount of primary air supplied to a mixing tube in which fuel gas supplied to a burner and primary air are mixed.
[0002]
[Prior art]
Conventionally, as shown in FIG. 5, a substantially bottomed cylindrical lid x attached to the opening end of the mixing tube z and a substantially circular damper y pivotably attached to the end wall of the lid x are provided. Air conditioning devices are known.
[0003]
The end wall of the lid x is communicating hole x ₀ where nozzles v for gas supplied to the central portion penetrates is provided, a pair of vent holes x ₁ sector is provided symmetrically about the communication hole x ₀ . The damper y hole y ₀ is provided nozzles v penetrates at the center thereof, vent x ₁ and a pair of opening y ₁ of same shape are provided symmetrically about the hole y _0. The damper y is provided with a scale y ₂ for adjusting the air amount outside the opening y ₁ and a knob y ₃ protruding in the outer diameter direction.
[0004]
Fuel gas ejected from the nozzle v is supplied to the burner (not shown) on which are mixed in the mixing tube z with the primary air sucked through the ventilation holes x ₁ of the lid x by ejector effect, it is ignited It burns.
[0005]
Since the amount of primary air required for the combustion differs depending on the type of gas, the amount of primary air required for combustion is such that the area of the vent hole x ₁ can correspond to any type of gas. Matched to the most gas. In addition, the damper y is rotated with respect to the lid x by the knob y ₃ so that the operator adjusts the scale y ₂ according to the type of gas before shipping as a burner product, so that the vent x ₁ The opening is adjusted.
[0006]
[Problems to be solved by the invention]
However, since the operation of adjusting the scale y _{2 of the} damper y according to the type of gas is performed by an operator, the opening degree of the vent hole x ₁ may deviate from an optimum value. If the primary air is excessive, the flame of the burner will be lifted. On the other hand, if the primary air is too low, the burner flame may be yellow, resulting in poor combustion.
[0007]
In addition, when the amount of primary air required is small compared to other types of gas and the opening degree of the vent hole x ₁ needs to be adjusted to be smaller, the opening degree of the vent hole x ₁ associated with the rotation of the damper y Fluctuation of the primary air amount with respect to increases. In this case, inconveniences such as a flame lift and yellow are more likely to occur due to misalignment of the scale y ₂ by the hand of the worker.
[0008]
Then, this invention makes it a solution subject to provide the air conditioner which can adjust the primary air quantity supplied to the mixing pipe | tube for the favorable combustion of a burner, suppressing dispersion | variation.
[0009]
[Means for Solving the Problems]
In order to solve the above problems, an air conditioning apparatus according to the present invention has an end wall in which a communication hole to which a fuel gas supply nozzle is connected and a first vent hole around the communication hole are formed. A lid attached to the opening end of the mixing tube and an opening corresponding to the first vent hole are formed and rotated in contact with the end wall of the lid body to rotate the opening relative to the first vent hole. by adjusting the degree of overlap, and a damper for adjusting the opening of the first vent hole, second vent hole for constantly communicating with said mixing tube and the outside is formed in the lid body, said damper The second vent hole is provided to be rotatable around the communication hole of the lid, and the second vent hole is provided outside the first vent hole as viewed from the communication hole .
[0010]
According to the present invention, it is ensured that a certain amount of primary air is supplied to the mixing pipe and the burner by the second vent hole. The damper is rotated with respect to the lid, and the degree of overlap between the opening of the damper and the first ventilation hole of the lid is adjusted, so that the opening degree of the first ventilation hole is adjusted. Accordingly, when the opening degree of the lid is adjusted only by the opening degree of the first vent hole, the fluctuation of the primary air supply amount to the mixing pipe through the first and second vent holes with respect to the rotation of the damper is controlled (FIG. 5)). In particular, it is possible to suppress variations in the primary air amount when the opening degree of the first vent hole is adjusted within a small range. In addition, the cost for forming the second ventilation hole in the lid can be reduced.
[0011]
Therefore, according to the present invention, the amount of primary air supplied to the mixing pipe for good combustion of the burner can be adjusted while suppressing variations.
[0013]
In addition, the diameter of the damper can be reduced compared to the opposite case because the second ventilation hole is formed outside the first ventilation hole when viewed from the communication hole in the end wall of the lid. Therefore, when the damper is manufactured by punching the opening portion from the plate material, the area of the plate material before punching is suppressed to be small. For this reason, it is possible to reduce the manufacturing cost of the damper, and hence the manufacturing cost of the air conditioner.
[0014]
Furthermore, in the present invention, the lid body has a side wall extending from the peripheral edge of the end wall along the side wall of the mixing tube, and the side wall partially overlaps with the side wall of the mixing tube so that the open end of the mixing tube And the second vent hole is provided in a portion of the side wall of the lid that does not overlap the side wall of the mixing tube.
[0015]
According to the present invention, unlike the case where the second ventilation hole is formed in the end wall of the lid, it is not necessary to change the shape of the end wall of the lid from the existing one. Therefore, it is not necessary to change the shape of the opening end of the mixing tube, and the manufacturing cost of the entire burner using the air conditioner can be reduced.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of an air conditioner of the present invention will be described with reference to the drawings. 1 and 2 are explanatory diagrams of the configuration of the air conditioner according to the present embodiment, FIG. 3 is a functional diagram of the air conditioner according to the present embodiment, and FIG. 4 is the configuration of the air conditioner according to another embodiment. It is explanatory drawing.
[0017]
The air conditioning apparatus shown in FIGS. 1 and 2 includes a substantially bottomed elliptical cylindrical lid body 100 and a generally disc-shaped damper 200 attached to a mixing tube 50 having a substantially elliptical opening end.
[0018]
The lid 100 has a substantially elliptical end wall 110 and a cylindrical side wall 120 extending from the periphery of the end wall 110 along the side wall of the mixing tube 50. A communication hole 112 is formed at the center of the end wall 110, and fan-shaped first air holes 114 having a substantially central right angle of curvature are formed around the communication hole 112, and the first air holes are viewed from the communication hole 112. A second ventilation hole 116 is formed in a pair on the outside of 114. The area of the second vent hole 116 is an area “s ₀ ” corresponding to a constant primary air amount. The area of the first vent hole 114 is an area “s ₁ −s ₀ that can supply a sufficient amount of primary air for the gas having the largest amount of primary air necessary for combustion among a plurality of types of gases when fully opened. It is said that.
[0019]
The damper 200 is formed with a hole 202 at the center thereof, and a pair of openings 204 having the same shape as the first vent hole 114 of the lid 100 is formed across the hole 202, and the primary air amount is adjusted outside the opening 204. A scale 206 is provided for this purpose. Further, the damper 200 is provided with a knob 208 that protrudes from the outer periphery of the damper 200 in the outer diameter direction. As shown in FIG. It has been.
[0020]
As shown in FIG. 2, the lid body 100 is attached to the open end of the mixing tube 50 by having its side wall 120 fitted into the side wall of the mixing tube 50 from the outside. Further, the damper 200 is attached to the lid body 100 in a state where the damper 200 can rotate while contacting the end wall 110 by fitting the cylindrical body 210 with the inner peripheral portion of the communication hole 112 of the lid body 100 from the outside. It is done. Further, the fuel gas supply nozzle 150 is provided so as to pass through the communication hole 112 of the lid 100 and the hole 202 of the damper 200 so that the tip protrudes into the mixing tube 50.
[0021]
The function of the air conditioner shown in FIGS. 1 and 2 will be described with reference to FIG.
[0022]
When the rotation angle θ of the damper 200 is 0 and the first ventilation hole 114 is fully closed, the opening area s of the lid 100 is the opening area s ₀ of the second ventilation hole 116.
[0023]
And the damper 200 is rotated with respect to the cover body 100 using the knob 208 so that the scale 206 may be matched with the kind of gas used. Accordingly, the opening degree of the first vent hole 114 gradually increases, the opening area s of the lid body 100 gradually increases from s ₀ as shown by the solid line.
[0024]
According to the air conditioner of the present embodiment, it is ensured that a certain amount of primary air corresponding to the opening area s ₀ is supplied to the mixing pipe 50 and the burner (not shown) by the second vent hole 116. (See FIG. 3). Moreover, the damper 200 is rotated with respect to the lid body 100, and the opening area s of the lid body 100 is adjusted by adjusting the opening degree of the first vent hole 114 (see the solid line in FIG. 3).
[0025]
Therefore, the variation in the amount of primary air supplied to the mixing pipe 50 through the first vent hole 114 and the second vent hole 116 with respect to the rotation of the damper 200 is determined only by the opening degree of the first vent hole 114. This can be suppressed as compared with the case where the area s is adjusted (see dotted lines in FIGS. 5 and 3). In particular, it is possible to suppress variations in the primary air amount when the primary air amount is adjusted in a range where the opening degree of the first vent hole 114 is small. In addition, the cost for forming the second ventilation hole 116 in the lid 100 can be reduced.
[0026]
Therefore, according to the present invention, the amount of primary air supplied to the mixing pipe 50 for good combustion of the burner can be adjusted while suppressing variations.
[0027]
Further, in the lid body 100, the diameter of the damper 200 can be reduced compared to the opposite case because the first ventilation hole 114 is formed at a position closer to the communication hole 112 than the second ventilation hole 116. it can. Therefore, when the damper 200 is manufactured by punching a portion such as the opening 204 from the plate material, the area of the plate material before punching is suppressed to be small. For this reason, the manufacturing cost of the damper 200, and hence the manufacturing cost of the air conditioner can be reduced.
[0028]
Further, the second vent hole 116 is provided in the end wall 110 of the lid 100, and the end wall 110 has a substantially oval shape in which only the portion where the second vent hole 116 is provided projects outward as viewed from the communication hole 112. Yes. Since the end wall 110 of the lid 100 protrudes outward only at the portion where the second vent hole 116 is formed, the end wall 110 is prevented from becoming unnecessarily large. Therefore, it is possible to save the space for attaching the lid 100 to the opening end of the mixing tube 50.
[0029]
As an air conditioner according to another embodiment of the present invention, the end wall 110 of the lid 100 may be substantially circular as shown in FIG. A pair of second through holes 116 may be formed outside 114.
[0030]
Further, only a part of the side wall 120 of the lid 100 is superposed on the side wall of the mixing tube 50 and attached to the opening end of the mixing tube 50, and the second ventilation hole 122 is formed in the lid 100 as shown in FIG. The side wall 120 may be provided in a portion that does not overlap the side wall of the mixing tube 50. In this case, unlike the case where the second ventilation hole 122 is formed in the end wall 110 of the lid 100 (see FIG. 1), it is not necessary to change the shape of the end wall 110 of the lid 100 from the existing one. Therefore, it is not necessary to change the shape of the opening end of the mixing pipe 50, and the manufacturing cost of the entire burner using the air conditioner can be reduced.
[0031]
Further, although not shown, the second ventilation hole 16 may be formed in the end wall 11 of the lid 10 at a position closer to the first ventilation hole 14 when viewed from the communication hole 12.
[0032]
The burner employing the air conditioning apparatus of the present invention may be applied to various appliances such as various cooking appliances. When employed in cooking utensils or the like, juice spilled from the pan when cooking ingredients may flow to the position of the air conditioner. However, since both the primary air hole 114 and the second vent hole 116 (122) are opened in the horizontal direction, they are blocked by foreign matters such as juice as compared with the case where they are opened in the vertical direction. Can be reduced.
[0033]
In this embodiment, the lid 100 is attached to the opening end of the mixing tube 50 by fitting the side wall 120 to the side wall of the mixing tube 50 from the outside. However, as another embodiment, the lid 100 is attached to the side wall 120. May be omitted, and only the end wall 110 may be formed and attached to the mixing tube 50 by welding, caulking, or screwing.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating the configuration of an air conditioner according to the present embodiment. FIG. 2 is a diagram illustrating the configuration of the air conditioner according to the present embodiment. FIG. 3 is a diagram illustrating the function of the air conditioner according to the present embodiment. FIG. 5 is a diagram illustrating the structure of an air conditioner according to an embodiment of the present invention. FIG. 5 is a diagram illustrating the structure of a conventional air conditioner.
50 ... Mixing tube, 100 ... Lid, 112 ... Communication hole, 114 ... First through hole, 116 ... Second through hole, 200 ... Damper, 202 ... hole, 204 ... Opening

Claims (2)

An air conditioner that adjusts a supply amount of primary air to a mixing pipe in which fuel gas and primary air supplied to a burner are mixed,
A lid body having an end wall formed with a communication hole to which a nozzle for fuel gas supply is connected and a first vent hole around the communication hole, and attached to the open end of the mixing pipe; An opening corresponding to one vent hole is formed, and the opening degree of the first vent hole is adjusted by rotating in contact with the end wall of the lid and adjusting the degree of overlap of the opening with the first vent hole. And a damper to adjust the
A second vent hole is formed in the lid for continually communicating the mixing tube with the outside;
The damper is rotatably provided around the communication hole of the lid,
The second air hole is provided outside the first air hole as viewed from the communication hole .   The lid body has a side wall extending from the peripheral edge of the end wall along the side wall of the mixing pipe, and the side wall is partially overlapped with the side wall of the mixing pipe and attached to the open end of the mixing pipe, The air conditioner according to claim 1, wherein a vent hole is provided in a portion of the side wall of the lid that does not overlap the side wall of the mixing tube.

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