• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    PURPOSE: A mixing unit is provided to obtain regular pre-mixed gas sufficiently mixed with first air for combustion and fuel gas. CONSTITUTION: A mixing unit consists of plural combustive first air blowing holes(28) in parallel and plural fuel gas blowing holes(14) in parallel. The fuel gas blowing hole is contacted with the negative pressure section of a non-opening portion(29) between the combustive first air blowing holes. The non-opening portion contains a fuel gas diffusing device and the fuel gas diffusing device is in a slant state to make fuel gas collide with the non-opening portion. The diffusing device as a slant member is slant with the non-opening portion. Thus, the non-opening portion is in 10 to 60 degrees when the combustive first air and the fuel gas are orthogonal with each other.
    公开号:KR20010029967A
    申请号:KR1020000041316
    申请日:2000-07-19
    公开日:2001-04-16
    发明作者:다나카아키오；소부에츠토무
    申请人:강성모；린나이코리아 주식회사；나이토 스스무；린나이가부시기가이샤；
    IPC主号:
    专利说明:

    Mixing unit {Air and fuel gas combination unit}
    The present invention mixes the fuel gas and the primary air for combustion in order to supply the premixed gas obtained by mixing the fuel gas and the primary air for combustion in a predetermined ratio to the burner unit for the entire primary combustion. It is about a sub unit.
    Conventionally, all primary combustion of the premixed gas to a burner is provided with a mixing unit unit which mixes the primary gas for combustion, which is forcibly sent by the fuel gas and the blowing fan, to a premixed gas in advance at a predetermined ratio. All primary combustion combustion devices have been known. As the first primary combustion type combustion device, for example, a condensation type hot water supply device having the configuration shown in FIG. 6 can be considered.
    The hot water supply device shown in FIG. 6 includes a combustion device 2 provided in the upper portion of the housing 1, a combustion chamber 3 connected to the lower side of the combustion device 2, and a combustion device provided in the combustion chamber 3 ( It consists of a heat exchanger 4 which is heated by 2). The heat exchanger (4) distributes the water supplied by the water supply pipe (6) into the water supply pipe (5), heats the secondary heat exchanger (4b), and the main heat exchanger (4a). 7) Supply to kitchen, bathroom, etc.
    The combustion apparatus 2 shown in FIG. 6 includes three mixing unit units 11a (center) and 11b (left and right) continuous in parallel and combustion plates 12a and 12b formed on the bottom surfaces of the mixing unit units 11a and 11b. It is provided with the combustion part 13 which consists of a combustor, Comprising: All the combustion which burns all the combustion plates 12a and 12b, and the partial combustion which burns a part are switchable. The mixing unit units 11a and 11b are formed in a box shape and are provided with a fuel gas inlet 14 on the rear surface and primary air introduction holes 15a and 15b for combustion on the ceiling surface.
    In the combustion part 13, the mixing part unit 11a arrange | positioned at the center and the mixing part units 11b and 11b arrange | positioned at both sides are accommodated in the combustion air supply chamber 17 connected to the upper side of the combustion chamber 3, The primary air for combustion is supplied by the blower fan 18 connected to the side of the combustion air supply chamber 17. The combustion primary air is sent from the combustion air supply chamber 17 into the mixing unit units 11b and 11b via the combustion primary air introduction holes 15a and 15b. Further, a gas pipe 21 is disposed on the back side of the combustion air supply chamber 17 and is connected to the fuel gas inlet 14 of the mixing unit units 11b and 11b via a manifold (manifold) 22.
    Next, the structure of the mixing part unit 11a, 11b is demonstrated with reference to FIG. 7 which expands and shows the principal part cross section of FIG. Moreover, as shown in FIG. 6, the mixing part unit 11a and 11b differ only in the length of the width direction, and the structure of a X-ray line cross section is the same. So, in FIG. 7, the mixing part unit 11b is demonstrated as an example.
    The mixing section unit 11b has a primary air inlet 15b for combustion on the ceiling surface opposite to the combustion plate 12b forming the combustion section 13, and the fuel is provided on the rear surface adjacent to the ceiling. The gas inlet 14 is provided. The fuel gas inlet 14 and the combustion primary air introduction hole 15b are blocked by a plate-shaped shielding member 34 that shields the combustion primary air introduction hole 15b. 34, a plurality of slit-shaped combustion primary air intakes 28 are formed at intervals.
    At this time, a configuration in which a plurality of fuel gas intakes are formed at a position facing the combustion primary air intake 28 at intervals so as to directly collide with the combustion primary air and the fuel gas can be considered. However, there is a problem that the flow of the combustion primary air introduced at the combustion primary air intake 28 and the flow of the fuel gas introduced from the fuel gas intake are both laminar and therefore difficult to mix with each other. Therefore, as shown in FIG. 3, the fuel gas inlet 14 has a plurality of space | intervals in the position which faces the mute part 29 between the combustion primary air inlets 28 and 28 formed in plurality at intervals. It is formed.
    According to the above configuration, the combustion plate of the blind portion 29 is formed by the combustion primary air ejected from the combustion primary air intake 28 to the fuel gas intake 14 at the shielding member 34. A negative pressure region is formed on the side of 12b). As a result, a part of the combustion primary air ejected from the combustion primary air intake 28 is drawn into the negative pressure region to form a vortex of the air flow, and is introduced from the fuel gas intake 14. Fuel gas is also attracted to the negative pressure region. As a result, the flow of the primary air for combustion and the flow of fuel gas together form a turbulent flow, so that they are mixed well with each other to form a premixed gas.
    In addition, on the side of the combustion plate 12b in the premixing unit 11b, a mixing plate which is attracted to the negative pressure region and mixed and guided by the flow of the primary air for combustion, further uniformly mixes the premixed gas ( 30) is formed. Then, the premixed gas mixed by the mixing plate 30 is ejected from the slit-shaped through hole 32 provided in the center of the mixing plate 30 so that a plurality of small holes 33 are uniformly distributed throughout. It is supplied to the combustion plate 12b through the distribution plate 31. As shown in FIG.
    However, in the mixing unit units 11a and 11b, when the flow rate of the fuel gas ejected from the fuel gas inlet 14 is relatively large, the fuel gas penetrates through the negative pressure region formed in the blind portion 29. There is a case where it is not sufficiently mixed with the primary air for combustion. For this reason, in the inner part on the opposite side to the fuel gas inlet 14 in the mixing unit units 11a and 11b, a mixed gas having a relatively low excess air ratio, that is, a gas-rich mixed gas is used for the combustion plates 12a and 12b. ) Is a bad condition to be supplied.
    It is an object of the present invention to provide a mixing unit unit capable of solving such a bad state and supplying a burner a uniform mixed gas in which primary combustion air and fuel gas are sufficiently mixed.
    1 is an explanatory cross-sectional view of a hot water supply apparatus using the mixing unit of the present invention.
    FIG. 2 is a II-II cross-sectional view showing the main part of FIG.
    3 is a plan view of the shielding member shown in FIG.
    4 is a plan view of the mixing plate shown in FIG.
    5 is a plan view of the distribution plate shown in FIG.
    6 is an explanatory cross-sectional view of a hot water supply apparatus using a conventional mixing unit.
    FIG. 7 is a VIII-VIII cross-sectional view showing the main part of FIG.
    (Explanation of symbols for main parts of drawing)
    11a, 11b-Mixing unit 14-Fuel gas inlet
    28-Primary air inlet for combustion 29-Mute parts (diffusion means)
    The mixing unit unit of the present invention for achieving the above object is spaced so as to supply the pre-mixed gas in which the primary air for combustion and fuel gas are mixed in a predetermined ratio in advance to the burner unit to perform all primary combustion. The combustion primary air is introduced at an angle that intersects the flow of the plurality of combustion primary air inlets formed in parallel and the primary air for combustion introduced from the combustion primary air intake. And a plurality of fuel gas inlets formed in parallel with a negative pressure area formed between the primary air inlets for each combustion by a gap therebetween, and being introduced from the primary air inlet for combustion. In the mixing unit unit for mixing the primary air and the fuel gas introduced from the fuel gas inlet, it is introduced from the fuel gas inlet to the rim between each combustion primary air inlet. Characterized by comprising a diffusion means for diffusing exit gas.
    According to the mixing unit of the present invention, a negative pressure region is formed in the mud between the combustion primary air inlets by the combustion primary air blown out from the plurality of combustion primary air inlets formed in parallel, A part of the combustion primary air is rolled into the negative pressure region to form a vortex of air flow. At this time, the fuel gas inlet is formed so as to introduce the fuel gas at an angle intersecting the flow of the primary air for combustion, and to face the negative pressure region formed in the muted portion. Thus, the fuel gas introduced from the fuel gas inlet is drawn into the negative pressure region and mixed with the combustion primary air to form a premixed gas. Further, in the mixing unit of the present invention, since the fuel gas is diffused by the diffusion means provided in the mud portion, the flow rate of the fuel gas is reduced and is easily attracted to the negative pressure region. Are mixed.
    In the present invention, the diffusion means is characterized in that the inclined member provided inclined to collide with the fuel gas introduced from the fuel gas intake portion in the rim between each combustion primary air intake.
    The inclined member is inclined as described above so that the collided gas flow can be easily diffused around it, and the gas flow is guided along the inclination so that the fuel gas and the primary air for combustion are easily mixed. The direction of the gas flow can be changed to be. As a result, it is possible to promote mixing of the fuel gas introduced from the fuel gas intake port with the combustion primary air introduced from the combustion primary air intake port.
    The inclined member may be attached by attaching a separate member to the mud portions between each combustion primary air inlet, and the fuel gas introduced from the fuel gas inlet may collide with the separate member. It is preferable to reduce the number of parts and man-hours (unit used when expressing the amount of work performed by one worker by time) by forming the inclined as described above, so that manufacturing is facilitated.
    Further, in the mixing unit of the present invention, when the flow of the combustion primary air introduced from the combustion primary air intake and the flow of the fuel gas introduced from the fuel gas intake cross, the inclined member is It is characterized by inclining in the range of 10 to 60 degrees with respect to the gas flow introduced from the fuel gas inlet.
    When the flow of the primary air for combustion and the flow of fuel gas cross each other, the inclined member is inclined in the range of 10 to 60 ° with respect to the fuel gas flow introduced from the fuel gas inlet, so that the fuel gas is The fuel gas may be guided so that the fuel gas is diffused when it collides with the diffusion means, and the direction of the flow of the fuel gas may be changed by guiding the fuel gas so that the fuel gas and the combustion primary air are easily mixed. If the inclination angle of the diffusion means with respect to the fuel gas flow is less than 10 °, the collision angle of the fuel gas flow with respect to the diffusion means is lowered, so that the gas flow cannot be sufficiently spread. In addition, when the inclination angle exceeds 60 °, the negative pressure region becomes difficult to be formed, and the direction of the flow of the fuel gas guided by the diffusion means becomes inappropriate, so that the fuel gas does not sufficiently spread inside the mixing unit. Therefore, the mixing with the combustion primary air may be insufficient.
    Embodiment of the Invention
    Next, embodiment of this invention is described in detail, referring an accompanying drawing. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an explanatory cross-sectional view of a hot water supply apparatus using a mixing unit of the present invention, Fig. 2 is a cross-sectional view taken along line II-II showing an enlarged main part of Fig. 1, and Fig. 3 is a plan view of the shield plate shown in Fig. 2. 4 is a plan view of the mixing plate shown in FIG. 2, and FIG. 5 is a plan view of the distribution plate shown in FIG. 2.
    The hot water supply apparatus shown in FIG. 1 is a condensation type combustion apparatus 2 provided in the upper part of the housing 1, the combustion chamber 3 connected to the lower side of the combustion apparatus 2, and is provided in the combustion chamber 3, and It consists of a heat exchanger 4 which is heated by the combustion device 2.
    The heat exchanger (4) has a water supply pipe (5) formed in a plural rows in a horizontal direction and a plurality of stages in a vertical direction, and the sensible heat of the combustion exhaust is close to the combustion device (2) above the combustion chamber (3). Main heat exchanger (4a) that mainly absorbs the water flowing in the water pipe (5), and the latent heat of the combustion exhaust is mainly absorbed from the combustion device (2) below the combustion chamber (3) It consists of a sub heat exchanger 4b which heats the water circulated in 5). The water pipe 5 is connected to the water supply pipe 6 on the side of the sub-heat exchanger 4b, and is connected to the hot water supply pipe 7 on the side of the main heat exchanger 4a. In addition, a plurality of fins 8a and 8b are attached to portions of the water pipe 5 constituting the main heat exchanger 4a and the sub-heat exchanger 4b to absorb the sensible and latent heat.
    The heat exchanger 4 distributes the water supplied by the water supply pipe 6 into the water supply pipe 5, heats the secondary heat exchanger 4b and the main heat exchanger 4a, and heats the hot water obtained by the heating. It is supposed to supply to kitchen, bathroom from 7). In such a heat exchanger (4), even the latent heat of combustion exhaust is absorbed, so that the water circulated in the water pipe (5) can be efficiently heated.
    In addition, since the combustion exhaust is absorbed by the latent heat, water vapor contained therein condenses to generate a drain. Thus, a drain removing means 9 is formed in the lower portion of the combustion chamber 3. Moreover, the exhaust port (not shown) which discharges the said combustion exhaust is formed in the back side of the combustion chamber 3.
    The combustion device 2 comprises a combustion section comprising three mixing section units 11a (center), 11b (left and right) connected in parallel and combustion plates 12a, 12b formed on the bottom surfaces of the mixing section units 11a, 11b. (13), it is possible to switch between the total combustion which burns all the combustion plates 12a and 12b, and the partial combustion which burns a part. The mixing unit units 11a and 11b are formed in a box shape and are provided with a fuel gas inlet 14 on the rear surface and primary air introduction holes 15a and 15b for combustion on the ceiling surface.
    The mixing unit units 11a and 11b have the same height as the direction connecting the combustion plates 12a and 12b and the combustion primary air introduction holes 15a and 15b and the depths corresponding to the front and rear directions in the drawing, and the fuel gas is blown. Except for the different widths of the inlets 14, the same shape is achieved, and the same or different types are provided with the surfaces on which the fuel gas inlet 14 is formed in the same direction. It is configured to selectively connect a plurality of mixing unit units (11a, 11b) of the. In addition, four fuel gas inlets 14 are formed in the mixing unit unit 11a, and six fuel gas intakes 14 are formed in the mixing unit unit 11b.
    In the combustion section 13, the mixing section unit 11a disposed at the center and the mixing section units 11b and 11b disposed at both sides thereof are connected by a connecting member 16 attached to the ceiling surface of the mixing section units 11a and 11b. It is connected and accommodated in the combustion air supply chamber 17 connected to the upper side of the combustion chamber 3. A blower fan 18 is connected to the side of the combustion air supply chamber 17, and the primary air for combustion is sent into the mixing unit units 11a and 11b through the combustion air supply chamber 17.
    Thus, when the blower fan 18 is connected to the side of the combustion air supply chamber 17, the primary air inlet hole 15b for combustion of the two mixing part units 11b arrange | positioned at both sides of the mixing part unit 11a. If the size is the same, the amount of air introduced from the near side and the far side from the blower fan 18 is different so that an appropriate amount of primary air for combustion cannot be supplied to the fuel gas introduced from the fuel gas inlet 14. . Therefore, a method of changing the size of the combustion primary air introduction holes 15 of the two mixing unit units 11b in the positional relationship to the blower fan 18 can be considered. However, if the size of the combustion primary air introduction hole 15b is changed, two kinds of mixing unit units 11b are required. If two kinds of mixing unit units 11b are misplaced, they are introduced from the fuel gas inlet 14. It is not possible to supply an adequate amount of primary air for combustion for fuel gas.
    Therefore, in the present embodiment, the combustion primary air introduction holes 15b of the two mixing unit units 11b have the same size, and the connecting member 16 has the primary air introduction holes 15a for the combustion of the mixing unit unit 11a. ) And air supply amount adjustment holes 19b and 19c communicating with the primary air inlet hole 15b for combustion of the mixing unit 11b. Then, the air supply amount adjusting hole 19b on the side close to the blower fan 18 is made larger than the air supply amount adjusting hole 19c on the side away from the blower fan 18. The ratio with the air-conditioner is made equal. As a result, an appropriate amount of combustion primary air can be supplied to the mixing unit unit 11b regardless of the positional relationship with the blower fan 18 without increasing the type of the mixing unit unit 11b. There is no mistake in the placement.
    In addition, in this embodiment, the air supply amount adjustment hole 19a with respect to the mixing part unit 11a is set so that the ratio of the fuel gas and combustion primary air in the mixing part unit 11a may be the same as that of the mixing part unit 11b.
    In addition, when the blower fan 18 is connected to the side of the combustion air supply chamber 17, combustion primary air is introduced into the mixing unit units 11a and 11b from the air supply adjustment holes 19a, 119b and 19c. In this case, it is guided into the obliquely inclined sides of the mixing unit units 11a and 11b toward the far side from the side close to the blower fan 18, making it difficult to mix with the fuel gas. Therefore, in this embodiment, the air supply chamber for combustion is provided with the burring 20 formed so that it may protrude inside the mixing part unit 11a, 11b around each air supply quantity adjustment hole 19a, 19b, 19c. The primary air for combustion introduced from 17 is directed to the central portion of the mixing section units 11a and 11b.
    Moreover, the gas pipe 21 is arrange | positioned at the back side of the combustion air supply chamber 17, and is connected to the fuel gas inlet 14 of the mixing part unit 11b, 11b via the manifold 22. As shown in FIG. In the manifold 22, electromagnetic valves 23a, 23b, and 23c are formed corresponding to the mixing unit units 11b, 11a and 11b, and the fuel gas for each mixing unit unit 11a and 11b is opened and closed. It is possible to alternatively control the supply or abolition of.
    Next, the structure of the mixing part unit 11a, 11b is demonstrated with reference to FIG. As shown in FIG. 1, the mixing part units 11a and 11b differ only in the width direction length, and the structure of the II-II cross section is the same. 2, the mixing part unit 11b is demonstrated as an example.
    In the mixing unit 11b, a combustion plate 12b made of ceramic or the like having a plurality of flame holes 24 penetrating back and forth is attached to the bottom surface to form a combustion unit 13. A fuel gas inlet 14 and a combustion primary air introduction hole 15b are provided at positions opposite to 12b. The combustion primary air introduction hole 15b first mixes the combustion primary air and the fuel gas at one end of the mixing unit unit 11b, and then mixes better at the central portion of the mixing unit unit 11b. It is formed in the part biased on the fuel gas intake port 14 side of the ceiling surface.
    The manifold 22 which communicates with the gas pipe 21 is formed in the back surface of the wall surface 17a which opposes the fuel gas intake 14 of the combustion air supply chamber 17 as mentioned above. The manifold 22 has a gas supply part 25 which penetrates the wall surface 17a of the combustion air supply chamber 17, and the nozzle 26 as a fuel gas inlet 14 is provided in the front end of the gas supply part 25. As shown in FIG. Is attached.
    The fuel gas inlet 14 and the primary air inlet 15b for combustion are blocked by a shielding member 27 for shielding the primary air inlet 15b for combustion. As shown in Fig. 3A, a plurality of slit-shaped combustion primary air intakes 28 are formed at intervals. At this time, the fuel gas inlet 14 is formed in plural with a space at a position facing the mute portions 29 between the plurality of primary air inlets 28 and 28 for combustion. Here, the mud recess 29 is formed inclined at an angle θ with respect to the direction of the fuel gas flow introduced from the nozzle 26. The inclination angle [theta] with respect to the direction of the fuel gas flow of the mute portions 29 can be appropriately selected in the range of 10 to 60 degrees, and is set to 14 degrees, for example.
    Further, the primary air inlet 28 for combustion formed in the shielding member 27 may be further divided as shown in FIG. 3 (b) of the slit shape shown in FIG. 3 (a). As shown to c), you may make it form many small holes.
    In addition, the mixing plate 30 and the distribution plate on the combustion plate 12b side of the mixing unit unit 11b in order to more uniformly mix the premixed gas mixed in the mixing unit unit 11b and supply the same to the combustion plate 12b. (31) is formed.
    The mixing plate 30 has a flat plate shape, as shown in FIG. 4 which is a plan view seen from the combustion plate 12b side, and has a slit-shaped passage hole 32 through which fuel gas and combustion primary air pass. The premixed gas mixed in the mixing unit unit 11b collides with the mixing plate 30 to be more sufficiently mixed, and is guided to the distribution plate 31 side from the passage hole 32. Further, as shown in FIG. 5, which is a plan view seen from the combustion plate 12b side, the distribution plate 31 is provided with a plurality of small holes 33 uniformly distributed throughout the plate shape, and the mixing plate 30. The premixed gas sufficiently mixed by the gas is uniformly distributed by the small holes and is led to the combustion plate 12b.
    Next, the effect | action of the mixing part unit 11a, 11b shown in FIG. 1 and FIG. 2 is demonstrated.
    In the hot water supply device shown in FIG. 1, when a hot water stopper (not shown) provided in a kitchen or a bathroom is opened, water supply starts from the water supply pipe 6 to the water supply pipe 5 and the hot water supply pipe 7. (Not shown), the combustion operation of the combustion device 2 is started. When the combustion operation is started, the primary air for combustion is sent from the blower fan 18 to the combustion air supply chamber 17. The primary air for combustion is air supply amount adjusting holes 19a, 19b, and 19c, and combustion. It is introduced into the mixing unit units 11a and 11b through the primary air introduction holes 15a and 15b. At the same time, a round gas valve (not shown) provided in the gas pipe 21 is opened, and the fuel gas is sent from the gas pipe 21 to the manifold 22 so that the fuel gas is picked up by the gas supply part 25 and the fuel gas. It is introduced into the mixing unit units 11a and 11b through the nozzle 26 of the inlet 14.
    When the primary air for combustion is introduced into the mixing unit units 11a and 11b from the primary air inlet 28 for combustion, the air pressure is lower than that of the other portions on the combustion plates 12a and 12b of the mud joint 29. A low negative pressure region is formed, and a part of the primary air for combustion is attracted to the negative pressure region to vortex to form turbulent flow. At this time, the fuel gas is introduced into the mixing unit units (11a, 11b) at an angle orthogonal to the combustion primary air from the nozzle (26) and collides with the muted portion (29) formed as inclined as described above and surrounding the surroundings. Diffuses, the flow rate is reduced. As a result, the fuel gas is easily attracted to the negative pressure region, and is mixed with the combustion primary air by the turbulence.
    In addition, the fuel gas is guided to the mute portion 29 so that the direction of the flow is changed and directed to the central portion of the mixing unit units 11a and 11b, so that the fuel gas and the primary air for combustion are better mixed.
    Here, when the inclination angle of the mute portion 29 is less than 10 °, the negative pressure region is easily formed by the combustion primary air introduced from the combustion primary air intake 28, whereas the nozzle 26 The collision angle with respect to the mud part 29 of the fuel gas introduce | transduced from this becomes low, and the fuel gas becomes difficult to diffuse. In addition, when the inclination angle of the chamfer portion 29 exceeds 60 °, the fuel gas introduced from the nozzle 26 easily diffuses, but the negative pressure region becomes difficult to form. In addition, the direction of the flow of the fuel gas guided by the mute portion 29 becomes inappropriate, and the fuel gas is difficult to diffuse into the mixing unit units 11a and 11b, so that the mixing with the primary air for combustion is insufficient. Become.
    Therefore, the angle of inclination of the mute portion 29 is 10 to obtain the effects of mixing the fuel gas and the primary air for combustion by the negative pressure region, and the effect of the collision and diffusion of the fuel gas flow, 10 It is set in the range of ˜60 °, preferably about 14 °.
    As a result, it is possible to obtain a premixed gas in which fuel gas and primary air for combustion are sufficiently mixed in the mixing unit units 11a and 11b.
    The premixed gas in which the fuel gas and the primary air for combustion are mixed as described above is then impinged on the mixing plate 30 and more sufficiently mixed in the space on the shield member 27 side from the mixing plate 30, It is led from the through hole 32 formed in the mixing plate 30 to the distribution plate 31 side. In the distribution plate 31, since the small holes 33 are formed uniformly therein, the premixed gas sufficiently mixed by the mixing plate 30 is uniformly distributed by the small holes 33. It is supplied to the combustion plate 12a, 12b side, and is blown off from the flame hole 24 to the combustion chamber 3 side. Then, it is ignited by an ignition plug (not shown) formed on the combustion chamber 3 side of the combustion plates 12a and 12b, and preliminarily burned.
    Here, the combustion device 2 controls the supply or close of the fuel gas from the manifold 22 to the mixing unit units 11a, 11b by the solenoid valves 23a, 23b, 23c to control the combustion plate 12a, All combustion and partial combustion of 12b) are made convertible. As a result, the water supplied from the water supply pipe 9 is heated by the amount of heat corresponding to the pre-combustion or partial combustion in the main heat exchanger 4a and the sub-heat exchanger 4b between the water supply pipes 5 and the hot water. It becomes and taps from the hot water supply pipe (7).
    Subsequently, all primary combustion is performed by the combustion apparatus 2 using the mixing part units 11a and 11b of this embodiment, and the combustion apparatus 2 using the conventional mixing part units 11a and 11b shown to FIG. 6 and FIG. Table 1 shows the results of comparing the carbon monoxide (CO) concentrations in the combustion exhaust when the test is carried out. The combustion condition is 38000 kcal / hr of input, excess air ratio λ = 1.28. The measured carbon monoxide concentration is represented in the case of lambda = 1.0.
    CO concentration (ppm) This embodiment1 2 7 Example1 4 0
    In the combustion device 2, the concentration of carbon monoxide in the combustion exhaust increases as the premixed gas increases in part. As shown in Table 1, in the present embodiment, the carbon monoxide concentration decreases by 13 ppm compared with the conventional example. have. This corresponds to a decrease of about 9% when the conventional example is 100%. Therefore, according to the present embodiment, it is clear that the fuel gas and the primary air for combustion are mixed well as compared with the conventional example, so that a premixed gas having a uniform excess air ratio as set can be obtained.
    In addition, in this embodiment, the mute part 29 of the shielding member 27 is inclined against the fuel gas flow, but the mute part 29 may be separately attached to the mute part 29 inclined against the fuel gas flow.
    In addition, in this embodiment, the example of the combustion apparatus 2 provided with the some mixing part unit 11a, 11b so that the total combustion and partial combustion of the combustion plate 12a, 12b can be changed is demonstrated. The mixing unit unit of the invention may be used in the singular.
    According to the present embodiment, it is clear that the fuel gas and the primary air for combustion are mixed well as compared with the above-described conventional example to obtain a premixed gas having a uniform excess air ratio as set.
    权利要求:
    Claims (4)
    [1" claim-type="Currently amended] A plurality of combustion primary air inlets formed in parallel at intervals so as to supply premixed gas in which the combustion primary air and fuel gas are mixed at a predetermined ratio in advance to all the primary combustion furnaces; The fuel gas is introduced at an angle intersecting the flow of the primary air for combustion introduced from the primary air inlet for combustion, and the mute between each primary air inlet for combustion is introduced by the primary air for combustion. Combustion primary air introduced from the combustion primary air intake and fuel introduced from the fuel gas intake are provided with a plurality of fuel gas intakes formed in parallel at intervals facing the negative pressure region formed in the pregnant part. As a mixing unit unit for mixing gas,
    And a diffusing means for diffusing the fuel gas introduced from the fuel gas inlet to the rim between each combustion primary air inlet.
    [2" claim-type="Currently amended] The method according to claim 1,
    Mixing unit unit characterized in that the inclined member provided inclined so as to impinge the fuel gas guided from the fuel gas inlet to the mud between the combustion primary air inlet for each combustion.
    [3" claim-type="Currently amended] The method according to claim 2,
    And the inclined member is formed by inclining a mud portion between each combustion primary air inlet so that fuel gas delivered from the fuel gas inlet collides with each other.
    [4" claim-type="Currently amended] The method according to claim 2 or 3,
    When the flow of combustion primary air introduced from the combustion primary air intake and the flow of fuel gas introduced from the fuel gas intake are orthogonal, the inclined member is a gas flow introduced from the fuel gas intake. Mixing unit unit characterized in that the inclination in the range of 10 to 60 ° with respect to.
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    同族专利:
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    JP3429460B2|2003-07-22|
    CN1153923C|2004-06-16|
    JP2001090913A|2001-04-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1999-09-20|Priority to JP264719
    1999-09-20|Priority to JP26471999A
    2000-07-19|Application filed by 강성모, 린나이코리아 주식회사, 나이토 스스무, 린나이가부시기가이샤
    2001-04-16|Publication of KR20010029967A
    2002-09-18|Application granted
    2002-09-18|Publication of KR100353432B1
    优先权:
    申请号 | 申请日 | 专利标题
    JP264719|1999-09-20|
    JP26471999A|JP3429460B2|1999-09-20|1999-09-20|Mixing unit|
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