Self-adaptive gas-collecting hood and water heater comprising same

Abstract

The utility model provides a self-adaptive gas-collecting hood and a water heater comprising the same, the self-adaptive gas-collecting hood comprises a hood body, at least two cavities are arranged in the hood body, a turning plate is arranged between every two adjacent cavities, and when the airflow pressure in one cavity is smaller than that in the other cavity, the turning plate is turned over, and the turning plate is turned over when the airflow pressure in the other cavity is smaller than that in the other cavity. The turning plate rotates towards the cavity with small airflow pressure and is communicated with the two adjacent cavities; and the reset part is arranged on the turning plate, and when the airflow pressure between the two adjacent cavities is the same, the turning plate rotates through the reset part and closes the communication position of the two adjacent cavities. By arranging the rotatable turning plate, when the flow speed of flue gas in one cavity is too high, the other cavity is communicated with the cavity, flue gas accumulation in the other cavity is reduced, the flow speed of the flue gas is increased, overheating caused by local flue gas accumulation is prevented, and then the service life of the cover body area corresponding to the cavity is correspondingly prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of self-adapting gas hoods and water heater comprising it. BACKGROUND

[0002] Gas hood is one of very important parts in water heater, and has great influence on improving flue gas emission efficiency and heat exchange module life. The conventional gas hood is formed by integrated stamping at present, and the inside is hollow state, without using mechanism to adaptively adjust flue gas, there are problems of too fast flue gas emission in middle area, and slow emission in both sides area. Long-time flue gas retention can make the life of both sides fins not reach expectation. UTILITY MODEL CONTENT

[0003] The utility model solves the technical problem to overcome the defect of flue gas retention in existing gas hood and short service life, and provides a kind of self-adapting gas hood and water heater comprising it.

[0004] The utility model solves the above technical problem by the following technical scheme:

[0005] A kind of self-adapting gas hood, the self-adapting gas hood includes:

[0006] Cover body, at least two cavities are provided in the cover body, and adjacent two cavities are provided with flap, when the air flow pressure in one of the cavities is less than the air flow pressure in another cavity, the flap rotates towards the cavity with smaller air flow pressure and connects adjacent two cavities.

[0007] Reset part, the reset part is arranged on the flap, when the air flow pressure between adjacent two cavities is the same, the flap rotates and closes the connecting place of adjacent two cavities by the reset part.

[0008] In the scheme, the cover body is divided into at least two cavities, so that each cavity can contain flue gas, and by arranging rotatable flap, when the flue gas flow rate in one cavity is too fast, another cavity is connected therewith, to reduce flue gas accumulation in another cavity, improve flue gas flow rate, prevent overheating when local flue gas accumulates, and thus the service life of the cover body region corresponding to the cavity is improved. In addition, by arranging reset part, the flap can rotate and reset automatically, and close the connecting place between adjacent two cavities. Compared with the way of manually resetting the flap, it is more automated and can be used repeatedly.

[0009] Preferably, three cavities are arranged in the cover body, one of which is arranged in the middle region of the cover body and communicates with the outlet of the cover body, and the other two cavities are arranged in the two side edge regions of the cover body and communicate with the outlet of the cover body through the rotation of the flap.

[0010] In the present scheme, through the above arrangement, when the water heater is only combusted in a certain region, if the flue gas is discharged into the cavity in the middle region of the cover body, the flap does not need to be rotated, and if the flue gas is discharged into the cavity in the edge region, the corresponding flap is rotated, and the flue gas is guided to flow directly to the outlet of the gas collector through the flap, thereby avoiding the problem of flue gas escaping, and improving the discharge speed of the flue gas compared with the accumulation of flue gas in the cover body.

[0011] Preferably, the reset part is arranged in the lower half region of the flap, and the reset part is integrally formed with the flap.

[0012] In the present scheme, through the above arrangement, the automatic reset of the flap is realized.

[0013] Preferably, the size of the lower half region of the flap with the reset part along the width direction or the thickness direction of the flap is greater than the size of the upper half region of the flap.

[0014] In the present scheme, through the above arrangement, the automatic reset of the flap is realized, and compared with the reset mode of the spring or the driving mechanism, the manufacturing cost is lower, and the use cost is also low.

[0015] Preferably, a rotating shaft is arranged between the two adjacent cavities, the rotating shaft is arranged in the middle region of the flap, and the flap is rotated and opened or closed through the rotating shaft to open or close the cavities in the two side edge regions of the cover body.

[0016] In the present scheme, through the above arrangement, the size of the flap extending into the cavity in the middle region when the flap is rotated is limited, so as to prevent the flap from closing the cavity in the middle region when the flap is rotated, to ensure that the flap rotates in the shape of "8", to form an air suction contraction pipe effect for discharging flue gas in the cavity in the middle region, and to increase the air inlet area of the cavity in the middle region, to more efficiently utilize the high-speed region of flue gas discharge, and to have an ejecting effect on the flue gas in the two side cavities, to improve the flue gas discharge speed in the two side cavities.

[0017] Preferably, a limiting part is further arranged on the flap, the limiting part is arranged in the lower half region of the flap, and the angle of the flap with the limiting part rotating towards the cavity in the middle region is 0-90°.

[0018] In the present scheme, through the above arrangement, the situation that the flap is reversed and cannot be reset when the flap is rotated is avoided.

[0019] Preferably, the cover body is provided with a through hole corresponding to the rotating shaft, the rotating shaft extends out of the cover body from the through hole, and an end of the rotating shaft is screwed with a bolt assembly, the size of the bolt assembly is greater than the size of the through hole.

[0020] In the scheme, the rotating shaft is convenient to install and dismount, and the rotating shaft is limited in the cover body to prevent the rotating shaft from moving and causing the flap to fall off.

[0021] Preferably, the self-adaptive gas collecting cover further comprises a top cylinder, which is arranged above the cover body and communicates with the cover body.

[0022] In the scheme, the flue gas flowing out of the cover body is effectively discharged into the flue through the top cylinder.

[0023] Preferably, at least one reverse stopping plate is arranged in the top cylinder, the reverse stopping plate is arranged perpendicular to the height direction of the top cylinder, when the air flow pressure flowing into the top cylinder from the cover body is greater than the air flow pressure outside the top cylinder, the reverse stopping plate rotates away from the cover body and communicates the cover body with the top cylinder.

[0024] In the scheme, the above arrangement prevents sundries from entering the cover body through the top cylinder.

[0025] A water heater comprises the self-adaptive gas collecting cover.

[0026] In the scheme, the water heater comprises the self-adaptive gas collecting cover, so that the flue gas flow rate is faster when the water heater is burning, the service life of the gas collecting cover is prevented from being affected by flue gas accumulation, the flue gas collecting cover is adaptively adjusted, the flue gas discharging efficiency of the gas collecting cover is greatly improved, and the situation that flue gas is discharged slowly due to the flue gas accumulation in the cover body is prevented.

[0027] The positive progress effect of the utility model lies in that: the cover body is divided into at least two cavities, so that each cavity can contain flue gas, meanwhile, the flaps are arranged to be rotatable, so that when the flue gas flow rate in one cavity is too fast, the other cavity is communicated with the one cavity, the flue gas accumulation in the other cavity is reduced, the flue gas flow rate is improved, the overheating caused by the local flue gas accumulation is prevented, and the service life of the cover body region corresponding to the cavity is correspondingly improved. In addition, the reset part is arranged, so that the flaps can rotate and reset automatically, and the communication between the adjacent two cavities is closed. Compared with the manual reset mode of the flaps, the degree of automation is higher, and the flaps can be repeatedly used. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a perspective view of the self-adaptive gas collecting cover of a preferred embodiment of the utility model.

[0029] Figure 2 It is the state diagram of the turning of the turning plate of a preferred embodiment of the utility model.

[0030] Figure 3 It is the perspective view of the turning plate of a preferred embodiment of the utility model.

[0031] Figure 4 It is the position relation diagram of the limiting part and the pivot of a preferred embodiment of the utility model.

[0032] Figure 5 It is the state diagram of the turning of the reverse stopping plate of a preferred embodiment of the utility model.

[0033] Figure 6 It is the turning diagram of the turning plate of a preferred embodiment of the utility model.

[0034] Mark explanation:

[0035] Cover body 1

[0036] Cavity 11

[0037] Turning plate 2

[0038] Reset part 3

[0039] Pivot 4

[0040] Limiting part 5

[0041] Bolt assembly 6

[0042] Top cylinder 7

[0043] Reverse stopping plate 8 Specific implementation

[0044] The following preferred embodiment is taken, and the utility model is more clearly and completely explained in combination with the drawings.

[0045] The embodiment provides a self-adaptive gas collecting cover, and the specific structure is as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 And Figure 6 , the self-adaptive gas collecting cover comprises:

[0046] Cover body 1, at least two cavities 11 are arranged in the cover body 1, the turning plate 2 is arranged between the adjacent two cavities 11, when the airflow pressure in one cavity 11 is less than the airflow pressure in another cavity 11, the turning plate 2 rotates towards the cavity 11 with less airflow pressure and connects the adjacent two cavities 11;

[0047] The reset part 3 is arranged on the flap 2, and when the airflow pressure between the two adjacent cavities 11 is the same, the flap 2 rotates and closes the communication between the two adjacent cavities 11 through the reset part 3.

[0048] Specifically, at least two cavities 11 are arranged in the cover body 1 along the width direction, the two cavities 11 are arranged side by side, and a rotatable flap 2 is arranged between the two adjacent cavities 11. The flap 2 is a planar plate. In this embodiment, the cavity 11 is a rectangular cavity, and the flap 2 is a rectangular plate. However, the shape is not limited. It can be understood that the flap 2 is used to close the communication between the two adjacent cavities 11 when the airflow pressure is the same. One of the cavities 11 is in communication with the outlet of the cover body 1, and the other cavity 11 is in communication with the outlet of the cover body 1 when the flap 2 rotates. By dividing the cover body 1 into at least two cavities 11, each cavity 11 can contain flue gas. When the flue gas in the cavity 11 directly connected to the outlet of the cover body 1 flows and the airflow pressure is less than that of the flue gas in the other cavity 11, the flap 2 rotates towards the cavity 11 with smaller airflow pressure, so that when the flue gas in one of the cavities 11 flows too fast, the other cavity 11 is connected to it, reducing the accumulation of flue gas in the other cavity 11, and correspondingly improving the flue gas flow rate in the other cavity 11, preventing overheating when the flue gas in the self-adaptive gas collecting cover accumulates locally, thereby improving the service life of the cover body 1 corresponding to the cavity 11.

[0049] In addition, by arranging the reset part 3, the flap 2 can rotate and reset automatically, closing the communication between the two adjacent cavities 11. Compared with the manual reset mode of the flap 2, it has higher automation and can be used repeatedly.

[0050] In this embodiment, three cavities 11 are arranged in the cover body 1. One of the cavities 11 is located in the middle region of the cover body 1 and is in communication with the outlet of the cover body 1. The other two cavities 11 are arranged in the edge regions of the cover body 1, and are in communication with the outlet of the cover body 1 when the flap 2 rotates.

[0051] Specifically, the three cavities 11 are arranged side by side along the width direction of the cover 1, and adjacent two cavities 11 are communicated by the rotation of the flap 2, so as to divide the cover 1 into three separate cavities 11. When the flue gas discharge speed in the cavities 11 of the two side edge regions is relatively slow to form flue gas retention, the airflow pressure drives the rotation of the flap 2, and the flap 2 is turned over to enable the cavities 11 of the two side edge regions to communicate with the cavity 11 of the middle region. At this time, the turned-over flap 2 of the two side edge regions is in the shape of "8", and the cavity 11 of the middle region forms an air suction contraction pipe structure, that is, the size of the air inlet region of the cavity 11 in the middle region is increased, and the air inlet amount is correspondingly increased, so as to more efficiently utilize the high-speed region of flue gas discharge to discharge the flue gas. At the same time, the rotating state of the flap 2 has an ejecting effect on the flue gas discharge in the cavities 11 of the two side edge regions, so as to improve the flue gas discharge speed in the cavities 11 of the two side edge regions.

[0052] In addition, it should be noted that when the water heater is only used in a certain region, at this time, due to the fact that the cover 1 is divided into three cavities 11, the flue gas generated by combustion will flow into the corresponding cavity 11, that is, in a certain cavity 11. If the flue gas discharge is concentrated in the cavity in the middle region of the cover 1, the flap 2 does not need to be rotated, and if the flue gas is concentrated in the cavity 11 of the edge region, the corresponding flap 2 is rotated, and the flue gas is guided by the flap 2 to directly flow to the outlet of the gas collector, thereby avoiding the problem that the flue gas escapes to other cavities 11 of the edge region. Compared with the accumulation of flue gas in the cover 1, the flue gas discharge speed is improved. Moreover, the service life of the cover 1 can also be correspondingly improved.

[0053] In the embodiment, the reset part 3 is arranged in the lower half region of the flap 2, and the reset part 3 is integrally formed with the flap 2.

[0054] Specifically, in the initial state, along the height direction of the cover 1, the flap 2 is parallel to the height direction of the cover 1, and only when there is a pressure difference in the airflow pressure, the flap 2 will rotate correspondingly. Along the height direction of the cover 1, half of the size of the flap 2 is the upper half region, and the other half of the size of the flap 2 is the lower half region. By arranging the reset part 3 in the lower half region of the flap 2, when the flap 2 rotates and is in the shape of "8", the flap 2 can be rotated under the condition that the pressure difference of the airflow pressure is small, so as to prevent the flap 2 from rotating under the condition that the reset part 3 is arranged in the upper half region of the flap 2 and the flue gas has accumulated in the cavity 11 for a period of time, thereby affecting the service life of the cover 1. It can be understood that the reset part 3 is integrally formed with the flap 2, which can reduce the space occupation in the cavity 11, thereby avoiding increasing the resistance when the flue gas flows, and improving the flue gas discharge efficiency.

[0055] In the embodiment, the size of the lower half region of the flap 2 with the reset part 3 along the width direction or the thickness direction of the flap 2 is greater than the size of the upper half region of the flap 2.

[0056] Specifically, the flap 2 is a rectangular plate, wherein the width direction size of the upper half region of the flap 2 is smaller than that of the lower half region, that is, the upper half region of the flap 2 is narrower than the lower half region, and the size of the upper half region and the lower half region of the flap 2 in other directions remains unchanged. It can be understood that the gravity of the lower half region with larger size is greater than that of the upper half region with smaller size, so as to drive the flap 2 to rotate automatically by gravity and realize automatic reset of the flap 2. The reset part 3 is arranged at the edge of the lower half region of the flap 2 away from the upper half region, so as to ensure the reset effect.

[0057] In other embodiments, the size of the upper half region and the lower half region of the flap 2 in the height and width directions remains unchanged, and the thickness size of the lower half region is greater than that of the upper half region in the thickness direction, that is, the upper half region of the flap 2 is thinner than the lower half region. In this case, the gravity of the lower half region is also greater than that of the upper half region, thereby realizing automatic reset of the flap 2. Of course, the width direction and thickness direction size of the lower half region of the flap 2 can be greater than those of the upper half region, so that the reset of the flap 2 is more timely. It should be noted that compared with the way of resetting the flap 2 by setting a spring or a driving mechanism, the above structure makes the reset part 3 have lower manufacturing cost and use cost. Moreover, it does not occupy the space in the cavity 11, avoiding resistance to the flow of flue gas.

[0058] In the present embodiment, a rotating shaft 4 is arranged between two adjacent cavities 11. The rotating shaft 4 is arranged in the middle region of the flap 2, and the flap 2 rotates and opens or closes the cavities 11 located at the two side edge regions of the cover body 1 through the rotating shaft 4.

[0059] Specifically, the rotating shaft 4 is a rod member and is arranged in the middle region of the flap 2. The rotating shaft 4 is rotationally connected to the cover body 1, so that the flap 2 rotates in the shape of "8" through the rotating shaft 4. It can be understood that compared with the way of arranging the rotating shaft 4 at the end of the flap 2, arranging the rotating shaft 4 in the middle region of the flap 2 can limit the size of the flap 2 extending into the cavity 11 in the middle region when the flap 2 rotates, that is, the flap 2 will not extend into the cavity 11 in the middle region completely, so as to prevent the size of the flap 2 extending into the cavity 11 in the middle region from being too large when the flap 2 rotates, thereby ensuring that the cavity 11 in the middle region forms a suction contraction pipe when the flap 2 rotates, and increasing the air inlet area of the cavity 11 in the middle region, so as to make more efficient use of the high-speed region of flue gas discharge, and at the same time, have an ejecting effect on the flue gas in the cavities 11 in the two side edge regions, thereby improving the flue gas discharge speed in the cavities 11 in the two side edge regions.

[0060] In the embodiment, the flap 2 is further provided with a limiting portion 5, which is located in the lower half region of the flap 2. When the flap 2 rotates, the angle of the cavity 11 in the middle region is 0-90°.

[0061] Specifically, the limiting portion 5 is a protruding structure provided in the lower half region of the flap 2 along the width direction of the flap 2, that is, the limiting portion 5 is integrally formed with the flap 2 along the width direction of the flap 2 and has a size larger than the upper half region of the flap 2, and the limiting portion 5 is close to the rotating shaft 4. That is, by providing the limiting portion 5, the rotating angle of the flap 2 is limited, so as to avoid the situation that the flap 2 is reversed when it rotates and cannot be reset. At the same time, the rotating angle of the flap 2 is limited, so as to avoid that when the flap 2 rotates from zero to more than 90°, the size of the air inlet region of the cavity 11 in the middle region is reduced, and the resistance to the flow of flue gas is prevented from being increased.

[0062] It can be understood that when the reset portion 3 is provided along the width direction of the flap 2, since the reset portion 3 is away from the upper half region of the flap 2, and the limiting portion 5 is close to the upper half region of the flap 2, and both have a size larger than the size of the upper half region of the flap 2 along the width direction of the flap 2, from the height direction of the flap 2, the upper half region of the flap 2, the limiting portion 5 and the reset portion 3 are arranged in sequence, and from the width direction of the flap 2, the limiting portion 5 and the reset portion 3 are integrally formed, forming a rectangular structure with a size larger than the upper half region of the flap 2.

[0063] In the embodiment, the cover 1 is provided with a through hole corresponding to the rotating shaft 4, the rotating shaft 4 extends out of the cover 1 from the through hole, and the end of the rotating shaft 4 is screwed with a bolt assembly 6, and the size of the bolt assembly 6 is larger than the size of the through hole.

[0064] Specifically, the bolt assembly 6 is a screw in the prior art, which cooperates with the threaded hole, and the size of the screw nut is larger than the size of the through hole, so as to limit the rotating shaft 4 after being installed in the cover 1. Compared with other connection structures, the screw can facilitate the installation and disassembly of the rotating shaft 4, prevent the rotating shaft 4 from moving and causing the flap 2 to fall off, and is easier to obtain and has lower use cost.

[0065] In the embodiment, the self-adaptive gas collecting cover further comprises a top cylinder 7, which is arranged above the cover 1 and communicates with the cover 1. The top cylinder 7 is a cylindrical structure in the prior art, which can be integrally formed with the cover 1 and effectively discharges the flue gas flowing out of the cover 1 into the flue.

[0066] In the embodiment, at least one reverse stopping plate 8 is arranged in the top cylinder 7, which is arranged perpendicular to the height direction of the top cylinder 7. When the air flow pressure flowing into the top cylinder 7 from the cover 1 is greater than the air flow pressure outside the top cylinder 7, the reverse stopping plate 8 rotates away from the cover 1 and communicates the cover 1 with the top cylinder 7.

[0067] Specifically, the check plate 8 is hinged with the top cylinder 7, the check plate 8 is a sector plate and can open or close the top cylinder 7 by setting a fixed shaft at the straight end of the sector plate and rotating around the fixed shaft, this embodiment takes the check plate 8 as an example, when the airflow pressure in the top cylinder 7 is greater than the airflow pressure outside the top cylinder 7, the check plate 8 rotates away from the cover body 1 and connects the cover body 1 and the top cylinder 7, it can be understood that the check plate 8 rotates unidirectionally to close the top cylinder 7 when the airflow pressure inside and outside the top cylinder 7 is the same, so as to prevent sundries from entering the cover body 1 through the top cylinder 7.

[0068] In other embodiments, the check plate 8 can also be provided with two, both of the check plate 8 are sector plates and the straight end of the sector plate is close to the axis of the top cylinder 7, so as to increase the flow in the top cylinder 7 when the smoke is discharged by increasing the number of check plate 8, thereby ensuring the smoke exhaust efficiency of the self-adaptive fume hood.

[0069] This embodiment also provides a water heater, which comprises the self-adaptive fume hood.

[0070] Specifically, the water heater comprises the self-adaptive fume hood, so that the flue gas flow rate is faster when the water heater is burning, and the service life of the fume hood is prevented from being affected by the accumulation of flue gas, the flap 2 of the fume hood is adaptively adjusted and can be automatically reset, the smoke exhaust efficiency of the fume hood is greatly improved, and the situation that flue gas is filled in the cover body 1 and is discharged slowly is prevented.

[0071] Although the specific embodiments of the utility model are described above, those skilled in the art should understand that this is only an example, the protection scope of the utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the utility model, but these changes and modifications all fall within the protection scope of the utility model.

Claims

1. An adaptive hood, characterized in that, The adaptive air collecting hood comprises: a cover body, at least two cavities are arranged in the cover body, a flap is arranged between two adjacent cavities, when the air flow pressure in one of the cavities is less than that in the other cavity, the flap rotates towards the cavity with less air flow pressure and connects the two adjacent cavities; a reset part is arranged on the flap, when the air flow pressure between the two adjacent cavities is the same, the flap rotates through the reset part and closes the connection between the two adjacent cavities.

2. The self-adapting hood of claim 1, wherein, Three cavities are arranged in the cover body, one of the cavities is arranged in the middle region of the cover body and is connected with the outlet of the cover body, the other two cavities are arranged in the two side edge regions of the cover body and are connected with the outlet of the cover body through the rotation of the flap.

3. The self-adapting hood of claim 2, wherein, The reset part is arranged in the lower half region of the flap and is integrally formed with the flap.

4. The self-adapting hood of claim 3, wherein, The size of the lower half region of the flap with the reset part along the width direction or the thickness direction of the flap is greater than that of the upper half region of the flap.

5. The self-adapting hood of claim 4, wherein, An axis is arranged between the two adjacent cavities, the axis is arranged in the middle region of the flap, and the flap rotates through the axis and opens or closes the cavities arranged in the two side edge regions of the cover body.

6. The self-adapting hood of claim 5, wherein, A limiting part is further arranged on the flap, the limiting part is arranged in the lower half region of the flap, and when the flap rotates, the angle of the flap rotating towards the cavity in the middle region is 0-90°.

7. The self-adapting hood of claim 5, wherein, A through hole is arranged in the cover body corresponding to the axis, the axis extends out of the cover body from the through hole, and a bolt assembly is screwed on the end of the axis, the size of the bolt assembly is greater than that of the through hole.

8. The self-adapting hood of claim 1, wherein, The adaptive air collecting hood further comprises a top cylinder, the top cylinder is arranged above the cover body and is connected with the cover body.

9. The self-adapting hood of claim 8, wherein, At least one reverse stopping plate is arranged in the top cylinder, the reverse stopping plate is arranged perpendicular to the height direction of the top cylinder, when the air flow pressure flowing into the top cylinder is greater than that outside the top cylinder, the reverse stopping plate rotates away from the cover body and connects the cover body and the top cylinder.

10. A water heater, characterized by The water heater comprises the adaptive air collecting hood according to any one of claims 1-9.

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