Combustor gas inlet front pipe, gas distribution device and gas water heater

Abstract

The utility model relates to the technical field of gas water heaters, in particular to a burner gas inlet front pipe, a gas distribution device and a gas water heater, and the burner gas inlet front pipe comprises a front pipe body with an inner cavity and at least one flow guide part; the flow guide piece is arranged in the inner cavity and divides the inner cavity into at least two distribution inner cavities; the front pipe body is provided with at least two fluid inlets, and the two fluid inlets are communicated with the two distribution inner cavities in a one-to-one correspondence mode. The flow guide part is provided with a flow guide section, and the flow guide section inclines towards one side of the fluid inlet; according to the combustor, the flow guide section on the flow guide part is obliquely arranged towards one side of the fluid inlet, so that the uniformity of the fluid entering the distribution inner cavity can be improved, and the combustion effect and the use stability of the combustor can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of fluid heaters, and in particular to a burner air intake front pipe, a gas distribution device and a gas water heater. Background Art

[0002] Most of the burners currently on the market (generally using 5 and 10 two-chamber sections) have a large load drop between adjacent sections. When the customer adjusts the required water temperature and the burner switches gears, there is a risk that the actual water temperature will exceed the set water temperature by more than 5°C. The conventional means is to rely on program control after a large number of experiments to compensate for this. The combustion of the commonly used atmospheric burners is inseparable from the injection effect of the airflow. Whether the injection of the airflow is uniform to a great extent affects the stability and effect of the combustion, and whether the composition of the flue gas meets the requirements. At present, most front pipes do not use relevant means to control the uniformity of the airflow.

[0003] The existing methods of relying on programs to compensate for the over-temperature of the burner when cutting gears are highly unreliable. Most of them still have the phenomenon of over-temperature when cutting the segment temperature. In addition, relying on programs to compensate requires a lot of testing, and the individual differences are large. The writing of programs requires a lot of time and labor costs. The two-chamber segmentation has a small number of segments, the firepower coverage is poor, and the load difference between adjacent segments is large; the front pipe does not use airflow uniformity control, and the combustion effect and stability of the burner are not reliable enough.

[0004] Therefore, it is necessary to provide an improved burner air intake front pipe to solve at least one of the above-mentioned problems in the prior art. Utility Model Content

[0005] In order to solve the problems existing in the above-mentioned prior art, the present application provides a burner air intake front pipe, comprising a front pipe body having an inner cavity and at least one flow guide; the flow guide is placed in the inner cavity to divide the inner cavity into at least two distribution inner cavities; at least two fluid inlets are arranged on the front pipe body, and the two fluid inlets are connected to the two distribution inner cavities in a one-to-one correspondence; the flow guide has a flow guide section, and the flow guide section is inclined toward one side of the fluid inlet.

[0006] Furthermore, a blocking structure is provided on the flow guide, and the blocking structure can be used to change the flow direction of the fluid entering the distribution cavity.

[0007] Furthermore, the burner air intake front pipe also includes a guide column, and the guide column is fixedly arranged in the distribution cavity.

[0008] Furthermore, the burner air intake front pipe also includes a rectifying plate and a partition, wherein the rectifying plate is arranged on a side of the inner cavity close to the fluid inlet, and the partition is arranged between the two fluid inlets, one end of the partition is connected to the rectifying plate, and the other end of the partition is connected to the inner cavity, thereby forming a fluid buffer space between the rectifying plate and the fluid inlet; a connecting port is arranged on the rectifying plate, and the connecting port is used to connect the buffer space with the distribution inner cavity.

[0009] Furthermore, a plurality of nozzles are arranged at intervals at the bottom of the front tube body, the nozzles are communicated with the inner cavity, and the nozzles are used to be connected to an external nozzle, so that the fluid can be sprayed out through the nozzle.

[0010] Furthermore, the burner air intake front pipe also includes a cover plate; the cover plate is detachably fixedly connected to the front pipe body.

[0011] Furthermore, the burner air intake front pipe also includes a sealing member; the sealing member is arranged between the cover plate and the front pipe body.

[0012] The present application also provides a gas distribution device, comprising a proportional valve and the burner air intake front pipe as described above; the proportional valve is cooperatively connected with the fluid inlet to control the fluid entering the distribution cavity of the burner air intake front pipe.

[0013] Furthermore, the gas distribution device also includes an electromagnetic control valve, wherein the front tube body is provided with a connecting hole which cooperates with the electromagnetic control valve; the electromagnetic control valve is used to control the air intake of one of the distribution cavities.

[0014] The present application also provides a gas water heater, comprising a burner and the gas distribution device as described above, wherein the burner is connected to the nozzle.

[0015] The burner air intake front pipe provided by the present application has at least the following technical effects:

[0016] The burner air intake front pipe in the present application includes the front pipe body having an inner cavity and at least one guide member; the guide member is placed in the inner cavity to partition the inner cavity to form at least two distribution inner cavities; at least two fluid inlets are arranged on the front pipe body, and the two fluid inlets are connected to the two distribution inner cavities in a one-to-one correspondence; the guide member has a guide section, and the guide section is inclined toward one side of the fluid inlet; the present application can improve the uniformity of the fluid entering the distribution inner cavity by inclining the guide section on the guide member toward one side of the fluid inlet, thereby improving the combustion effect and use stability of the burner. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions and advantages of the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 : An exploded view of a gas distribution device provided by an embodiment of the utility model;

[0019] Figure 2 : A schematic diagram of the structure of the burner air intake front pipe provided by an embodiment of the utility model;

[0020] Figure 3 : A schematic structural diagram of a burner air intake front pipe from another perspective provided by an embodiment of the utility model;

[0021] Figure 4 : A schematic structural diagram of a burner air intake front pipe from another perspective provided by an embodiment of the utility model;

[0022] In the figure: 1-front tube body, 2-guide member, 11-distribution inner cavity, 12-fluid inlet, 21-guide section, 22-partition section, 23-blocking structure, 3-guide column, 4-rectifier plate, 5-partition plate, 6-buffer space, 41-connecting port, 13-nozzle, 14-nozzle, 7-cover plate, 8-seal, 9-proportional valve, 10-electromagnetic control valve, 111-first distribution inner cavity, 112-second distribution inner cavity, 113-third distribution inner cavity, 121-first fluid inlet, 122-second fluid inlet, 411-first connecting port, 412-second connecting port, 15-connecting hole, 413-third connecting port, 91-first valve port, 92-second valve port, 61-first buffer space, 62-second buffer space. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, device, product or equipment that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0025] The following describes the embodiments with reference to the accompanying drawings, which do not limit the contents of the utility model described in the claims.

[0026] Please refer to Figure 1-4 The embodiment of the present disclosure provides a burner air intake front pipe, including a front pipe body 1 with an inner cavity and at least one guide member 2; the guide member 2 is placed in the inner cavity to separate the inner cavity into at least two distribution inner cavities 11; at least two fluid inlets 12 are arranged on the front pipe body 1, and the two fluid inlets 12 are connected to the two distribution inner cavities 11 in a one-to-one correspondence; the guide member 2 has a guide section 21, and the guide section 21 is inclined toward one side of the fluid inlet 12.

[0027] Specifically, Figure 1 As shown, in this embodiment, two guide members 2 can be provided to form three distribution cavities 11 with unequal inner cavity spaces, wherein the cavity space of the middle distribution cavity 11 is the smallest, and the distribution cavity 11 on the left is larger than the distribution cavity 11 on the right.

[0028] Furthermore, the three distribution cavities 11 may include a first distribution cavity 111, a second distribution cavity 112 and a third distribution cavity 113, and the fluid inlets 12 are respectively a first fluid inlet 121 and a second fluid inlet 122, the first fluid inlet 121 is connected to the first distribution cavity 111, and the second fluid inlet 122 is connected to the second distribution cavity 112.

[0029] Specifically, the guide member 2 includes a connected guide section 21 and a barrier section 22. The guide section 21 is connected to the inner wall of one side of the inner cavity and is inclined toward the side of the fluid inlet 12; the barrier section 22 is connected to the inner wall of the other side of the inner cavity, and the barrier section 22 can be arranged perpendicular to the inner wall.

[0030] In some embodiments, a blocking structure 23 is provided on the flow guide 2 , and the blocking structure 23 can be used to change the flow direction of the fluid entering the distribution cavity 11 .

[0031] Specifically, the size of the blocking structure 23 may be limited according to the specific structure, and is not limited in this embodiment.

[0032] Specifically, the blocking structure 23 can be arranged at the connection between the guide section 21 and the barrier section 22 , and the blocking structure 23 is arranged parallel to the inner wall of the inner cavity or perpendicular to the flow direction of the fluid at the fluid inlet 12 .

[0033] In this embodiment, the blocking structure 23 can block the inflow direction of the fluid entering the distribution cavity 11 through the fluid inlet 12, thereby adjusting the uniformity of the fluid entering the distribution cavity 11 and improving the uniformity of the fluid.

[0034] In some embodiments, a guide column 3 is further included, and the guide column 3 is fixedly disposed in the distribution cavity 11 .

[0035] Specifically, the guide column 3 can be arranged in the first distribution cavity 111, the second distribution cavity 112 and the third distribution cavity 113, and the specific number of arrangements can be determined according to specific usage conditions.

[0036] In other embodiments, the guide column 3 may be disposed at the connecting portion between the guide section 21 and the blocking section 22 of the guide member 2 .

[0037] In the embodiment of the present application, by providing the guide column 3 in the distribution inner cavity 11, the uniformity of the fluid entering the distribution inner cavity 11 can be adjusted, thereby improving the uniformity of the fluid.

[0038] In some embodiments, a rectifier plate 4 and a partition plate 5 are further included. The rectifier plate 4 is arranged on a side of the inner cavity close to the fluid inlet 12, and the partition plate 5 is arranged between the two fluid inlets 12. One end of the partition plate 5 is connected to the rectifier plate 4, and the other end of the partition plate 5 is connected to the inner cavity, thereby forming a fluid buffer space 6 between the rectifier plate 4 and the fluid inlet 12; a connecting port 41 is provided on the rectifier plate 4, and the connecting port 41 is used to connect the buffer space 6 with the distribution inner cavity 11.

[0039] Specifically, the rectifying plate 4 is arranged on one side of the inner cavity close to the fluid inlet 12, and a buffer space 6 is formed between the rectifying plate 4 and the inner wall of the inner cavity. The buffer space 6 can be divided by the partition 5 to form a first buffer space 61 and a second buffer space 62. The first buffer space 61 is connected to the first fluid inlet 121, and the second buffer space 62 is connected to the second fluid inlet 122.

[0040] Specifically, the communication port 41 includes a first communication port 411 and a second communication port 412 . The first communication port 411 is used to connect the first buffer space 61 with the first distribution cavity 111 , and the second communication port 412 is used to connect the second buffer space 62 with the second distribution cavity 112 .

[0041] In the embodiment of the present application, the rectifier plate 4 is arranged on the side close to the fluid inlet 12, and a buffer space 6 is formed between the rectifier plate 4 and the inner wall of the inner cavity. The buffer space 6 can be partitioned by the partition plate 5 to form a first buffer space 61 and a second buffer space 62, and the first buffer space 61 is connected to the first fluid inlet 121, and the second buffer space 62 is connected to the second fluid inlet 122, so that the fluid entering the distribution cavity 11 can be rectified, thereby preventing the fluid from directly entering the distribution cavity 11 through the fluid inlet 12, causing uneven distribution of the fluid in the distribution cavity 11, resulting in the combustion flame being high and low when the burner is working, resulting in poor combustion effect.

[0042] In some embodiments, a plurality of nozzles 13 are disposed at intervals at the bottom of the front tube body 1 . The nozzles 13 are connected to the inner cavity. The nozzles 13 are used to connect to an external nozzle 14 , so that the fluid can be sprayed out through the nozzle 14 .

[0043] Specifically, Figure 3 As shown, four nozzles 13 may be provided in the first distribution cavity 111, and the fluid in the first distribution cavity 111 can be sprayed out through the four nozzles 13; two nozzles 13 may be provided in the second distribution cavity 112, and the fluid in the second distribution cavity 112 can be sprayed out through the two nozzles 13; seven nozzles 13 may be provided in the third distribution cavity 113, and the fluid in the third distribution cavity 113 can be sprayed out through the seven nozzles 13.

[0044] In this embodiment, the first distribution cavity 111 is arranged between the second distribution cavity 112 and the third distribution cavity 113. By setting the distribution cavity 11 to a three-cavity segmented method of seven, two, and four, the gear can be switched more quickly by igniting the middle first distribution cavity 111 and transferring the fire to both sides.

[0045] Furthermore, by arranging different numbers of nozzles 13 in different distribution cavities 11 , the gear position of the fluid spraying amount can be adjusted.

[0046] In some embodiments, a cover plate 7 is further included; the cover plate 7 is detachably fixedly connected to the front tube body 1 .

[0047] Specifically, the cover plate 7 can be fixedly connected to the front tube body 1 by means of bolts, and then snapped onto the distribution inner cavity 11 .

[0048] In some embodiments, a sealing member 8 is further included; the sealing member 8 is disposed between the cover plate 7 and the front tube body 1 .

[0049] In the embodiment of the present application, by arranging the sealing member 8 between the cover plate 7 and the front tube body 1, the sealing performance of the mating connection between the cover plate 7 and the front tube body 1 can be improved, thereby avoiding the potential safety hazard caused by fluid leakage.

[0050] The embodiment of the present application also discloses a gas distribution device, including a proportional valve 9 and the above-mentioned burner air intake front pipe; the proportional valve 9 is connected with the fluid inlet 12 to control the fluid entering the distribution cavity 11 of the burner air intake front pipe.

[0051] Specifically, the proportional valve 9 includes a first valve port 91 and a second valve port 92 . The first valve port 91 is connected to the first fluid inlet 121 , and the second valve port 92 is connected to the second fluid inlet 122 .

[0052] Specifically, the control device is communicated with the proportional valve 9, and can control the fluid entry into the first distribution cavity 111, the second distribution cavity 112 and / or the third distribution cavity 113 by controlling the on / off status of the first valve port 91 and / or the second valve port 92 of the proportional valve 9.

[0053] In some embodiments, an electromagnetic control valve 10 is further included. The electromagnetic control valve 10 and the front tube body 1 are provided with a connecting hole 15 that cooperates with the electromagnetic control valve 10; the electromagnetic control valve 10 is used to control the air intake of one of the distribution cavities 11.

[0054] Specifically, the control device is communicated with the electromagnetic control valve 10, and the control device controls the power on and off of the electromagnetic control valve 10. When the electromagnetic control valve 10 is in the power-on state, the valve opens to allow air to pass through. When the electromagnetic control valve 10 is in the power-off state, the valve closes to block air from passing through.

[0055] Specifically, a linkage opening and closing member is provided on the electromagnetic control valve 10, and a third connecting port 413 is provided on the rectifier plate 4. The linkage opening and closing member is used to cooperate with the third connecting port 413 in opening and closing. When the electromagnetic control valve 10 is in a powered-on state, the linkage opening and closing member and the third connecting port 413 are in an open state, so that air can pass through the third connecting port 413 and then into the third distribution cavity 113; when the electromagnetic control valve 10 is in a powered-off state, the linkage opening and closing member is buckled at the third connecting port 413, so as to prevent air from passing through the third connecting port 413 and then into the third distribution cavity.

[0056] In the embodiment of the present application, by providing the electromagnetic control valve 10, the mixing degree of air and fluid can be improved, thereby improving the completeness of fluid combustion.

[0057] In the embodiment of the present application, a proportional valve 9 and an electromagnetic control valve 10 are provided on the burner air intake front pipe, thereby enabling adjustment of multiple gas distribution gears of the gas distribution device.

[0058] In this embodiment, the adjustment of five gas distribution gears can be achieved. Specifically, the adjustment of the first gear of the gas is to control the first valve port 91 of the proportional valve 9 to be in an open state, the second valve port 92 to be in a closed state, and the electromagnetic control valve 10 to be in a power-off state. The fluid enters the first distribution cavity 111 after passing through the first valve port 91 and the first fluid inlet 121, and is then ejected through the two nozzles 13 in the first distribution cavity 111.

[0059] Furthermore, the second gear of the gas is adjusted to control the first valve port 91 of the proportional valve 9 to be in a closed state, the second valve port 92 to be in an open state, and the solenoid control valve 10 to be in a power-off state. The fluid enters the second distribution cavity 112 through the second valve port 92 and the second fluid inlet 122, and is then sprayed out through the four nozzles 13 in the second distribution cavity 112.

[0060] Furthermore, the third gear of the gas is adjusted to control the first valve port 91 of the proportional valve 9 to be in an open state, the second valve port 92 to be in an open state, and the solenoid control valve 10 to be in a power-off state. The fluid enters the second distribution cavity 112 through the second valve port 92 and the second fluid inlet 122, and is then sprayed out through the four nozzles 13 in the second distribution cavity 112.

[0061] Furthermore, the fourth gear of the gas is adjusted to control the first valve port 91 of the proportional valve 9 to be in an open state, the second valve port 92 to be in a closed state, and the electromagnetic control valve 10 to be in an energized state. The fluid enters the first distribution cavity 111 through the first valve port 91 and the first fluid inlet 121, and the fluid also enters the third distribution cavity 113 through the electromagnetic control valve 10 and the connecting hole 15, and is then ejected through a total of nine nozzles 13 in the first distribution cavity 111 and the third distribution cavity 113.

[0062] Furthermore, the fifth gear of the gas is adjusted to control the first valve port 91 of the proportional valve 9 to be in an open state, the second valve port 92 to be in an open state, and the electromagnetic control valve 10 to be in an energized state. The fluid enters the first distribution cavity 111 through the first valve port 91 and the first fluid inlet 121, and enters the second distribution cavity 112 through the second valve port 92 and the second fluid inlet 122. The fluid also enters the third distribution cavity 113 through the electromagnetic control valve 10 and the connecting hole 15, and is then ejected through thirteen nozzles 13 in the first distribution cavity 111, the second distribution cavity 112 and the third distribution cavity 113.

[0063] In the embodiment of the present application, by setting the switching adjustment of five gears, the breadth of combustion coverage can be improved, and the difference in combustion firepower adjusted between different gears is small, making the adjustment accuracy more accurate.

[0064] The embodiment of the present application further discloses a gas distribution device, including a burner and the above-mentioned gas distribution device, wherein the burner is connected to the nozzle 14 .

[0065] Specifically, it also includes an ignition device, through which the gas sprayed from the nozzle 14 is ignited, and then the burner can be heated.

[0066] In an embodiment of the present application, a gas distribution device is added to the burner, and then the gear of the gas distribution device is adjusted to adjust the heating gear of the burner, and the range of burner temperature adjustment is improved. The temperature difference of the burner between different gears is small, so that the adjustment accuracy is more accurate.

[0067] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0068] It should be noted that all the features recorded in this application (including technical features recorded in different embodiments) can be combined arbitrarily under reasonable circumstances, and new technical solutions formed by the combination are all within the protection scope of this application.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A burner air intake front pipe, characterized in that: It comprises a front tube body (1) having an inner cavity and at least one flow guide (2); The flow guide (2) is placed in the inner cavity to partition the inner cavity into at least two distribution inner cavities (11); at least two fluid inlets (12) are provided on the front tube body (1), and the two fluid inlets (12) are connected to the two distribution inner cavities (11) in a one-to-one correspondence; The flow guide member (2) comprises a flow guide section (21), and the flow guide section (21) is arranged obliquely towards one side of the fluid inlet (12).

2. The burner air intake front pipe according to claim 1, characterized in that: The flow guide (2) is provided with a blocking structure (23), and the blocking structure (23) can be used to change the flow direction of the fluid entering the distribution cavity (11).

3. The burner air intake front pipe according to claim 1, characterized in that: It also comprises a flow guiding column (3), wherein the flow guiding column (3) is fixedly arranged in the distribution inner cavity (11).

4. The burner air intake front pipe according to claim 1, characterized in that: It also comprises a rectifying plate (4) and a partition (5), wherein the rectifying plate (4) is arranged on a side of the inner cavity close to the fluid inlet, and the partition (5) is arranged between the two fluid inlets (12), one end of the partition (5) is connected to the rectifying plate (4), and the other end of the partition (5) is connected to the inner cavity, thereby forming a fluid buffer space (6) between the rectifying plate (4) and the fluid inlet (12); The rectifying plate (4) is provided with a communication port (41), and the communication port (41) is used to connect the buffer space (6) with the distribution inner cavity (11).

5. The burner air intake front pipe according to claim 1, characterized in that: A plurality of nozzles (13) are arranged at intervals at the bottom of the front tube body (1); the nozzles (13) are connected to the inner cavity and are used to be connected to an external nozzle (14), so that fluid can be sprayed out through the nozzle (14).

6. The burner air intake front pipe according to claim 1, characterized in that: It also comprises a cover plate (7); the cover plate (7) is detachably fixedly connected to the front tube body (1).

7. The burner air intake front pipe according to claim 6, characterized in that: It also comprises a sealing member (8); the sealing member (8) is arranged between the cover plate (7) and the front tube body (1).

8. A gas distribution device, characterized in that: A burner air inlet front pipe comprising a proportional valve (9) and any one of claims 1 to 7; The proportional valve (9) is cooperatively connected with the fluid inlet (12) and is used to control the fluid to enter the distribution cavity (11) of the burner air intake front pipe.

9. The gas distribution device according to claim 8, characterized in that: It also comprises an electromagnetic control valve (10), wherein the electromagnetic control valve (10) and the front tube body (1) are provided with a connecting hole (15) which is matched and connected with the electromagnetic control valve (10); the electromagnetic control valve (10) is used to control the air intake of one of the distribution cavities (11).

10. A gas water heater, characterized in that: It comprises a burner and the gas distribution device according to claim 9, wherein the burner is connected to the nozzle (14).

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