Gas-collecting hood and gas water heater comprising same

Abstract

The utility model provides a gas-collecting hood and a gas water heater including the same, the gas-collecting hood comprises a shell, the shell is provided with a gas inlet, the gas inlet is provided with a rectifying plate and an adjusting plate which are arranged in an overlapped mode, the orthographic projection of the adjusting plate on the rectifying plate is located on the inner side of the rectifying plate, and the rectifying plate is provided with a gas outlet. A first through hole is formed in the rectifying plate, a second through hole is formed in the adjusting plate, and a first air inlet channel is formed in the overlapped part of the first through hole and the second through hole; the adjusting plate is configured to move relative to the rectifying plate so as to adjust the opening degree of the first air inlet channel. According to the gas-collecting hood, the adjusting plate is moved to an area where the flow passing through the air inlet is too high according to the load requirement, the opening degree of the first air inlet channel is reduced through relative movement between the adjusting plate and the rectifying plate so as to reduce the flow passing through the area where the flow passing through the air inlet is too high, the uniformity of the flow passing through the air inlet is improved, and the service life of the gas-collecting hood is prolonged. And the combustion stability of the gas water heater is further improved.

Description

Technical Field

[0001] The utility model relates to a gas collecting hood and a gas water heater comprising the same. Background Art

[0002] Domestic gas water heaters are commonly used hot water supply equipment in daily life. They have the advantages of fast hot water output, constant water temperature, less scale, small footprint, and no water volume control, and are deeply favored by consumers. Figure 1 As shown, since the air outlet 2' of the air collecting hood is offset, the gas passing through the left half of the air inlet 1' of the air collecting hood can directly flow to the upper air outlet 2' and flow out from the air outlet 2', and the gas passing through the right half of the air inlet 1' of the air collecting hood is blocked during the upward flow, and the airflow needs to turn left to flow to the air outlet 2', which makes the gas easily accumulate in the right half of the air inlet 1', so that the flow rate through the left half of the air inlet 1' of the air collecting hood is higher than the flow rate through the right half of the air inlet 1' of the air collecting hood, which leads to uneven wind pressure at the air inlet, and then leads to poor combustion stability and insufficient combustion of gas. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defect of uneven flow rate on the air inlet surface of the air collecting hood in the prior art, and to provide an air collecting hood and a gas water heater comprising the same.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] The utility model provides an air collecting hood, the air collecting hood comprises a shell, an air inlet is arranged on the shell, a rectifier plate and an adjustment plate arranged in a superimposed manner are arranged at the air inlet, the orthographic projection of the adjustment plate on the rectifier plate is located on the inner side of the rectifier plate, a first through hole is arranged on the rectifier plate, a second through hole is arranged on the adjustment plate, and the overlapping part of the first through hole and the second through hole forms a first air inlet channel;

[0006] The adjustment plate is configured to be movable relative to the rectifying plate to adjust the opening of the first air inlet passage.

[0007] In the present solution, the above-mentioned structural form is adopted, and the adjustment plate is moved to the area where the flow through the air inlet is too high according to the load demand. The overlapping part between the first through hole and the second through hole is adjusted through the relative movement between the adjustment plate and the rectifier plate, and the opening of the first air inlet channel is reduced to reduce the flow through the area where the flow is too high, thereby improving the uniformity of the flow through the air inlet, thereby improving the combustion stability of the gas water heater and making the gas water heater burn more fully.

[0008] Preferably, the air collecting hood includes a driving assembly, which includes a lead screw and a driving member. The lead screw extends along a first direction, and the adjustment plate is provided with a sliding portion that cooperates with the lead screw thread. The driving member is used to drive the lead screw to rotate to drive the sliding portion to move along the first direction.

[0009] In this solution, the above-mentioned structural form is adopted, and the driving member drives the screw to rotate to realize the movement of the adjustment plate relative to the rectifier plate along the first direction. The structure is simple and the rationality of the spatial layout is improved; and the driving member can reduce manpower and facilitate operation.

[0010] Preferably, the adjustment plate comprises an adjustment plate body and the sliding portion, and the sliding portion is connected to a side edge of the adjustment plate body.

[0011] In this solution, the above-mentioned structural form is adopted, and the sliding part is located on the side of the adjusting plate body, which does not occupy the upper and lower spaces of the adjusting plate body, and is conducive to improving the rationality of the space.

[0012] Preferably, along the first direction, the sliding portion is located in the middle of the adjustment plate body.

[0013] In this solution, the above-mentioned structural form is adopted. When the lead screw drives the sliding part to move, since the sliding part is located in the middle of the adjustment plate body, the adjustment plate is evenly stressed, which facilitates the lead screw to pull the adjustment plate to move.

[0014] Preferably, the inner peripheral wall of the sliding portion is provided with a thread matching with the lead screw, and the sliding portion is sleeved on the outer peripheral side of the lead screw.

[0015] In this solution, the above-mentioned structural form is adopted, and the lead screw is installed on the inner peripheral side of the sliding part to prevent the lead screw from detaching from the sliding part when the driving member drives the lead screw to rotate relative to the sliding part, thereby achieving high reliability.

[0016] Preferably, the housing is provided with extension plates at both ends along the first direction, and both ends of the lead screw are respectively passed through the extension plates.

[0017] In this solution, the above-mentioned structural form is adopted, and the two ends of the screw are respectively placed on the extension plates, which greatly improves the stability of the screw during rotation.

[0018] Preferably, two opposite sides of the shell are provided with slots extending along the first direction, and two ends of the adjustment plate extend out of the slots respectively.

[0019] In this solution, the above-mentioned structural form is adopted, and the adjustment plate is arranged in the slot to prevent the adjustment plate from being separated from the housing during movement. In addition, the slot is provided to provide a guide for the movement of the adjustment plate.

[0020] Preferably, the number of the driving assemblies is two, and the two driving assemblies are respectively located on both sides of the adjustment plate.

[0021] In this solution, the above-mentioned structural form is adopted, and two driving components jointly drive the adjustment plate to move, thereby reducing the possibility of blockage of the adjustment plate during movement, and also avoiding the situation where one set of driving components cannot drive the adjustment plate to move due to failure.

[0022] Preferably, the shell includes a first side surface and a second side surface, the plane where the first side surface is located is perpendicular to the plane where the second side surface is located, and the plane where the first side surface is located is located in the middle of the second side surface;

[0023] The air inlet is formed on the first side surface, and the air outlet connected to the air inlet is formed on the second side surface. The axial direction of the air outlet is parallel to the first direction.

[0024] The utility model also provides a gas water heater, which comprises the gas collecting hood as described above.

[0025] The positive and progressive effects of the utility model are:

[0026] The air collecting hood in the utility model moves the adjustment plate to the area where the flow through the air inlet is too high according to the load demand, and adjusts the overlapping part between the first through hole and the second through hole through the relative movement between the adjustment plate and the rectifier plate, and reduces the opening of the first air inlet channel to reduce the flow through the area where the flow is too high, thereby improving the uniformity of the flow through the air inlet, thereby improving the combustion stability of the gas water heater and making the gas water heater burn more fully. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the gas collecting hood in the prior art.

[0028] Figure 2 The figure is a schematic structural diagram of the gas collecting hood of a preferred embodiment of the utility model.

[0029] Figure 3 This is a schematic structural diagram of the gas collecting hood from another angle of a preferred embodiment of the utility model.

[0030] Figure 4 It is a partial cross-sectional view of the gas collecting hood of a preferred embodiment of the utility model.

[0031] Figure 5 It is a schematic diagram of the partial structure of the gas collecting hood of a preferred embodiment of the utility model.

[0032] Figure 6 This is a schematic structural diagram of an adjustment plate according to a preferred embodiment of the utility model.

[0033] Description of reference numerals:

[0034] Shell 1

[0035] Air Inlet 11

[0036] Extended plate 12

[0037] Slot 13

[0038] First side 14

[0039] Second side 15

[0040] Air outlet 151

[0041] Main body 16

[0042] The third through hole 161

[0043] Cover body 17

[0044] Fourth through hole 171

[0045] First connecting plate 172

[0046] Second connecting plate 173

[0047] Rectifier 2

[0048] First through hole 21

[0049] Adjustment plate 3

[0050] The second through hole 31

[0051] Adjustment plate body 32

[0052] Sliding portion 33

[0053] First air inlet channel 4

[0054] Second air inlet channel 5

[0055] Drive assembly 6

[0056] Screw 61

[0057] Driving member 62 DETAILED DESCRIPTION

[0058] The present invention will be described more clearly and completely below by way of embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the following embodiments.

[0059] Please combine Figures 2 to 6For understanding, an embodiment of the utility model provides an air collecting hood, which includes a shell 1, an air inlet 11 is provided on the shell 1, and a rectifier plate 2 and an adjustment plate 3 are arranged in a superimposed manner at the air inlet 11, and the orthographic projection of the adjustment plate 3 on the rectifier plate 2 is located on the inner side of the rectifier plate 2, a first through hole 21 is provided on the rectifier plate 2, and a second through hole 31 is provided on the adjustment plate 3, and the overlapping part of the first through hole 21 and the second through hole 31 forms a first air inlet channel 4, wherein the first through hole 21 and the adjustment plate 3 are configured to be movable relative to the rectifier plate 2 to adjust the opening of the first air inlet channel 4. The combustion area is arranged opposite to the air inlet 11. The adjustment plate 3 is moved to the area where the flow through the air inlet 11 is too high according to the load demand. The overlapping part between the first through hole 21 and the second through hole 31 is adjusted through the relative movement between the adjustment plate 3 and the rectifier plate 2, and the opening of the first air inlet channel 4 is reduced to reduce the flow through the area where the flow is too high, thereby improving the uniformity of the flow through the air inlet 11, thereby improving the stability of the combustion of the gas water heater and making the gas water heater burn more fully.

[0060] In addition, the first through hole 21 provided in the portion of the rectifying plate 2 that does not overlap with the regulating plate 3 serves as the second air inlet channel 5 (see Figure 3 ).

[0061] In this embodiment, if Figure 2 and Figure 3 As shown, the air collecting hood includes a driving assembly 6, which includes a lead screw 61 and a driving member 62. The lead screw 61 extends along a first direction, and a sliding portion 33 threadedly matched with the lead screw 61 is provided on the adjustment plate 3. The driving member 62 is used to drive the lead screw 61 to rotate so as to drive the sliding portion 33 to move along the first direction. Figure 2 It is understood that the length direction of the housing 1 is set to the first direction. The driving member 62 drives the lead screw 61 to rotate, driving the sliding portion 33 threadedly connected to the lead screw 61 to move along the first direction, so as to realize the movement of the adjustment plate 3 along the first direction. The lead screw 61 is driven to rotate by the driving member 62 to realize the movement of the adjustment plate 3 relative to the rectifier plate 2 along the first direction. The structure is simple and the rationality of the spatial layout is improved; and the driving by the driving member 62 can reduce manpower and facilitate operation. Among them, the driving member 62 is preferably a stepping motor. Of course, in other examples, as an alternative means, the driving member 62 can output the movement along the first direction through other linear motion mechanisms, such as linear motion mechanisms based on cylinders, hydraulic cylinders, electric cylinders or cam mechanisms.

[0062] In other embodiments, the driving assembly 6 includes a telescopic mechanism, and the sliding portion 33 is driven to move along the first direction through the telescopic movement of the telescopic mechanism.

[0063] In this embodiment, if Figure 3 , 4As shown in FIG. 6 , the adjustment plate 3 includes an adjustment plate body 32 and a sliding portion 33, and the sliding portion 33 is connected to the side of the adjustment plate body 32. The sliding portion 33 is located at the side of the adjustment plate body 32, does not occupy the upper and lower space of the adjustment plate body 32, and is conducive to improving space rationality.

[0064] In this embodiment, if Figure 6 As shown, along the first direction, the sliding part 33 is located in the middle of the adjusting plate body 32. When the lead screw 61 drives the sliding part 33 to move, since the sliding part 33 is located in the middle of the adjusting plate body 32, the adjusting plate 3 is evenly stressed, which facilitates the lead screw 61 to pull the adjusting plate 3 to move.

[0065] In this embodiment, if Figure 4 As shown, the inner peripheral wall of the sliding part 33 is provided with a thread matching with the lead screw 61, and the sliding part 33 is sleeved on the outer peripheral side of the lead screw 61. The lead screw 61 is installed on the inner peripheral side of the sliding part 33 to prevent the lead screw 61 from being separated from the sliding part 33 during the process of the driving member 62 driving the lead screw 61 to rotate relative to the sliding part 33, and the reliability is high.

[0066] In this embodiment, if Figure 2 As shown, the housing 1 is provided with extension plates 12 at both ends along the first direction, and the two ends of the lead screw 61 are respectively arranged through the extension plates 12. The two ends of the lead screw 61 are respectively placed on the extension plates 12, which greatly improves the stability of the lead screw 61 during the rotation process. Specifically, through holes are opened on the two extension plates 12, the first end of the lead screw 61 passes through one of the through holes, and the other end of the lead screw 61 passes through the other through hole to install the driving member 62.

[0067] In this embodiment, if Figure 5 As shown, two opposite sides of the housing 1 are provided with slots 13 extending in a first direction, and two ends of the adjustment plate 3 extend out of the slots 13 respectively. The adjustment plate 3 is placed in the slots 13 to prevent the adjustment plate 3 from being separated from the housing 1 during the movement. In addition, by providing the slots 13, a guide is provided for the movement of the adjustment plate 3. Specifically, the sliding portion 33 of the adjustment plate 3 extends out of the slots 13 to be threadedly connected with the lead screw 61.

[0068] Specifically, the outer peripheral side of the rectifying plate 2 is connected to the inner peripheral side of the air inlet 11. The slot 13 is located on the side wall of the housing 1 below the rectifying plate 2, and the regulating plate 3 is overlapped and arranged below the rectifying plate 2.

[0069] In this embodiment, there are two drive assemblies 6, and the two drive assemblies 6 are respectively located on both sides of the adjustment plate 3. The two drive assemblies 6 jointly drive the adjustment plate 3 to move, thereby reducing the possibility of blockage of the adjustment plate 3 during the movement process, and also avoiding the situation where one set of drive assemblies 6 cannot drive the adjustment plate 3 to move due to a malfunction.

[0070] In this embodiment, if Figure 2 and Figure 5 As shown, the shell 1 includes a first side surface 14 and a second side surface 15, the plane where the first side surface 14 is located is perpendicular to the plane where the second side surface 15 is located, and the plane where the first side surface 14 is located is located in the middle of the second side surface 15; an air inlet 11 is opened on the first side surface 14, and an air outlet 151 connected to the air inlet 11 is opened on the second side surface 15, and the axial direction of the air outlet 151 is parallel to the first direction.

[0071] Specifically, the cross section of the housing 1 is "L"-shaped, and includes an "L"-shaped main body 16 and a cover body 17. The cover body 17 covers the main body 16. The cover body 17 includes a first connecting plate 172 and a second connecting plate 173 connected to each other. The first connecting plate 172 and the second connecting plate 173 are arranged at a 90-degree angle. The lower end surface of the main body 16 is set as the first side surface 14. Along the first direction, the plane where the second side surface 15 is located is located in the middle of the first side surface 14. A third through hole 161 is opened on a surface of the main body 16 that is perpendicular to the first side surface 14, and a fourth through hole 171 is opened on the second connecting plate 173 and is arranged opposite to the third through hole 161. The overlapping part of the third through hole 161 and the fourth through hole 171 serves as the air outlet 151. The rectifier plate 2 is mounted on the lower end surface of the main body 16 . Slots 13 are formed on both sides of the main body 16 below the rectifier plate 2 . Both ends of the adjustment plate 3 extend out of the slots 13 to be mounted on the main body 16 .

[0072] When implementing it, please combine Figure 2 and Figure 3 It is understood that since the gas passing through the left half of the air inlet 11 of the air hood can flow directly to the third through hole 161 above, and the gas passing through the right half of the air inlet 11 of the air hood is blocked by the first connecting plate 172 during the upward flow, the airflow needs to turn left to flow to the third through hole 161, so that the gas is easily accumulated in the right half of the air inlet 11, so that the flow through the left half of the air inlet 11 is relatively large, and therefore, the left half of the air inlet 11 is used as an area with excessive flow. The driving member 62 drives the lead screw 61 to rotate, so that the adjustment plate 3 moves along the first direction, so that the adjustment plate 3 moves to the area with excessive flow, and adjusts the overlapped part between the first through hole 21 and the second through hole 31 to reduce the opening of the first air inlet channel 4, thereby reducing the flow through the area with excessive flow, so that the flow through the entire air inlet 11 becomes uniform.

[0073] The embodiment of the utility model further provides a gas water heater, which includes the gas collecting hood as described in the above embodiment.

[0074] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A gas collecting hood, characterized in that: The air collecting hood comprises a shell, an air inlet is provided on the shell, a rectifier plate and an adjustment plate are arranged in a stacked manner at the air inlet, the orthographic projection of the adjustment plate on the rectifier plate is located on the inner side of the rectifier plate, a first through hole is provided on the rectifier plate, a second through hole is provided on the adjustment plate, and the overlapping part of the first through hole and the second through hole forms a first air inlet channel; The adjustment plate is configured to be movable relative to the rectifying plate to adjust the opening of the first air inlet passage.

2. The gas collecting hood according to claim 1, characterized in that: The air collecting hood includes a driving assembly, which includes a lead screw and a driving member. The lead screw extends along a first direction, and a sliding portion that cooperates with the lead screw thread is provided on the adjustment plate. The driving member is used to drive the lead screw to rotate to drive the sliding portion to move along the first direction.

3. The gas collecting hood according to claim 2, characterized in that: The adjusting plate comprises an adjusting plate body and the sliding part, and the sliding part is connected to the side of the adjusting plate body.

4. The gas collecting hood according to claim 3, characterized in that: Along the first direction, the sliding portion is located in the middle of the adjustment plate body.

5. The gas collecting hood according to claim 2, characterized in that: The inner peripheral wall of the sliding part is provided with a thread matched with the lead screw, and the sliding part is sleeved on the outer peripheral side of the lead screw.

6. The gas collecting hood according to claim 2, characterized in that: The housing is provided with extension plates at both ends along the first direction, and both ends of the lead screw are respectively passed through the extension plates.

7. The gas collecting hood according to claim 2, characterized in that: Two opposite sides of the shell are provided with slots extending along the first direction, and two ends of the adjustment plate extend out of the slots respectively.

8. The gas collecting hood according to claim 2, characterized in that: The number of the driving components is two, and the two driving components are respectively located on both sides of the adjustment plate.

9. The gas collecting hood according to claim 2, characterized in that: The shell includes a first side surface and a second side surface, the plane where the first side surface is located is perpendicular to the plane where the second side surface is located, and the plane where the first side surface is located is located in the middle of the second side surface; The air inlet is formed on the first side surface, and the air outlet connected to the air inlet is formed on the second side surface. The axial direction of the air outlet is parallel to the first direction.

10. A gas water heater, characterized in that: The gas water heater comprises the gas collecting hood as described in any one of claims 1-9.

Images