CN210485715U - Venturi device and gas equipment - Google Patents
Venturi device and gas equipment Download PDFInfo
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- CN210485715U CN210485715U CN201920987549.2U CN201920987549U CN210485715U CN 210485715 U CN210485715 U CN 210485715U CN 201920987549 U CN201920987549 U CN 201920987549U CN 210485715 U CN210485715 U CN 210485715U
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Abstract
The utility model discloses a venturi device and gas equipment, venturi device, include: a body defining a gas flow passage having an air inlet and a gas burner, air and gas being mixed within the gas flow passage; the flow limiting plate is arranged in the gas flow channel and defines an air port communicated with the air inlet; and the ball valve is slidably arranged on the inner wall surface of the gas flow passage and used for adjusting the flow area of the air port. According to the utility model discloses venturi device is through the current-limiting plate that has the wind gap in the gas flow way setting to through ball valve control wind gap aperture size, thereby obtain the air-fuel ratio of preferred, air-fuel ratio control range is big, and the commonality is strong, can be adapted to the demand of different load models.
Description
Technical Field
The utility model relates to a water heater technical field, more specifically relates to a venturi device and gas equipment.
Background
The venturi device in the related art cannot effectively adjust the mixing amount of gas and air, has a small combustion adjustment ratio, and cannot meet gas equipment with different load requirements.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of above-mentioned technical problem to a certain extent at least.
Therefore, the utility model provides a venturi device, this venturi device's air-fuel ratio is good, the commonality is strong.
The utility model discloses still provide a gas equipment with above-mentioned venturi device, this gas equipment combustion efficiency is high.
According to the utility model discloses venturi device, include: a body defining a gas flow passage having an air inlet and a gas burner, air and gas being mixed within the gas flow passage; the flow limiting plate is arranged in the gas flow channel and defines an air port communicated with the air inlet; and the ball valve is slidably arranged on the inner wall surface of the gas flow passage and used for adjusting the flow area of the air port.
According to the utility model discloses venturi device is through the current-limiting plate that has the wind gap in the gas flow way setting to through ball valve control wind gap aperture size, thereby obtain the air-fuel ratio of preferred, air-fuel ratio control range is big, and the commonality is strong, can be adapted to the demand of different load models.
According to the utility model discloses a some embodiments, the wind gap includes at least one normally closed wind gap and at least one normally open wind gap, the ball valve is used for adjusting normally closed wind gap aperture size.
In an optional embodiment, a slide way for the ball valve to slide is arranged on the inner wall of the gas flow passage, the sliding stroke of the ball valve is positively correlated with the wind pressure of the air inlet, and the ball valve seals the normally closed air port at a low point.
In a further optional embodiment, the slide is an arc-shaped slide extending along the circumferential direction of the inner wall of the airflow channel, and two ends of the arc-shaped slide are respectively provided with a first limiting rib and a second limiting rib.
In an optional example, the slideway is a semi-arc slideway, and one half of the semi-arc slideway is a lowest point.
According to some embodiments of the utility model, the gas nozzle include with the normally open gas nozzle that the normally open wind gap corresponds, and with the normally closed gas nozzle that the normally closed wind gap corresponds.
In an optional embodiment, the normally closed air opening and the normally closed gas nozzle have positive correlation in opening degree.
In a further optional embodiment, the ball valve synchronously adjusts the opening sizes of the normally closed air opening and the normally closed gas nozzle.
In an alternative example, the air inlet is located at one axial end of the body, and the gas nozzle is formed on an inner wall of the gas flow passage and located downstream of the restrictor plate.
According to some embodiments of the utility model, the venturi device is including the unchanged larynx section and the flaring section of the constriction section, cross section that connect in order, the gas nozzle with the ball valve is all located the larynx section.
In an optional embodiment, the opening of the normally closed tuyere is smaller than the opening of the normally open tuyere.
According to the utility model discloses gas equipment includes the venturi device of above-mentioned embodiment, because according to the utility model discloses the air-fuel ratio control range of venturi device is big, can be applicable to the gas equipment of different load demands, consequently, according to the utility model discloses gas equipment's air-fuel ratio is good.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view of an angle configuration of a premixing device in accordance with some embodiments of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is a schematic view of another angle of a premixing device in accordance with some embodiments of the present invention;
FIG. 5 is a cross-sectional view taken along line C-C of FIG. 4;
FIG. 6 is a perspective view of a premixing device in accordance with some embodiments of the present invention;
FIG. 7 is a schematic view of another angle of a premixing device in accordance with some embodiments of the present invention.
Reference numerals:
a venturi device 100;
a body 10; an air inlet 11; a gas nozzle 12; a normally closed gas nozzle 121; a normally open gas nozzle 122; a gas flow channel 13; a slideway 14; a flared section 15; a throat section 16; a throat section 17;
a restrictor plate 20; a tuyere 21; a normally closed tuyere 211; a normally open tuyere 212;
a ball valve 30;
a first limit rib 41; a second limiting rib 42;
a housing 50;
a gas channel 60.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
Describing the venturi device 100 according to the embodiment of the present invention with reference to fig. 1-7, the venturi device 100 can pre-mix the gas of different media, so as to obtain a uniformly mixed gas mixture, for example, when the gas is combusted in the combustion chamber of the gas appliance, the gas and the air can enter the venturi device 100 in advance for pre-mixing, and the mixed gas of the air and the gas (air-fuel gas for short) enters the combustion chamber for fully and effectively combusting. The gas-fired device herein includes, but is not limited to, a forced draft gas-fired device and a forced drum gas-fired device.
In addition, the gas mixer further comprises a housing 50, the venturi device 100 is embedded in the housing 50, a gas channel is formed by the outer wall surface of the venturi device 100 and the housing 50, and the gas channel is communicated with the gas nozzle 12.
It will be appreciated that the combustion efficiency of the gas-fired device is critical to the air-fuel ratio, and therefore, the present invention is directed to a novel venturi apparatus 100, which venturi apparatus 100 can effectively regulate the amount of gas and air that participate in the mixing.
Referring to fig. 1-7, the venturi apparatus 100 includes: a body 10, a restrictor plate 20, and a ball valve 30. The body 10 defines a gas flow passage 13 having an air inlet 11 and a gas burner 12, the air and gas being mixed in the gas flow passage 13.
A restrictor plate 20 is disposed within the gas flow channel 13 and defines a tuyere 21 communicating with the air inlet 11. The ball valve 30 is slidably provided on an inner wall surface of the gas flow path 13 to adjust a flow area of the tuyere 21. In the case that the intake air amount of the air inlet 11 is fixed, the amount of air involved in mixing can be adjusted by adjusting the opening size of the tuyere 21 through the ball valve 30. The more the area of the tuyere 21 is shielded by the ball valve 30, the smaller the opening degree of the tuyere 21 is, and at this time, the larger the amount of air participating in mixing is; the smaller the area of the tuyere 21 shielded by the ball valve 30 is, the larger the opening degree of the tuyere 21 is, and at this time, the larger the amount of air involved in mixing.
That is, the amount of air entering the venturi device 100 for mixing is adjustable, and of course, in order to obtain a better air-fuel ratio, the amount of air taken into the mixed air can be adjusted, for example, a gas valve can be arranged on a connecting pipe between a municipal gas pipeline and a gas device, and the air inlet pressure and the air inlet amount of the air can be adjusted through the gas valve.
It should be noted that, herein, the air inlet 11 of the venturi device 100 is connected to the air outlet of the fan, and the air inlet pressure of the venturi device 100 is the same as the air outlet pressure of the fan. In other words, the amount of air involved in mixing is adjusted depending on the output wind pressure of the fan, so that the sliding stroke of the ball valve 30 can be correlated with the relevant parameters of the fan, and the mixing amount of gas and air can be more accurately controlled, thereby obtaining a better air-fuel ratio.
In addition, the mixing amount of the gas and the air can be controlled in various ways, for example, two valves can be arranged on the body 10 to control the opening degrees of the gas nozzle 12 and the tuyere 21 respectively, and for example, only one valve is arranged on the body 10 to synchronously control the opening degrees of the gas nozzle 12 and the tuyere 21.
From this, according to the utility model discloses venturi device 100 is through setting up the current-limiting plate 20 that has wind gap 21 in gas flow channel 13 to through ball valve 30 control wind gap 21 aperture size, thereby obtain the air-fuel ratio of preferred, air-fuel ratio control range is big, and the commonality is strong, can be adapted to the demand of different load models.
In some embodiments of the present invention, as shown in fig. 1, the tuyere 21 includes at least one normally closed tuyere 211 and at least one normally open tuyere 212, and the ball valve 30 is used for adjusting the opening of the normally closed tuyere 211. That is, the restrictor plate 20 may define one or more normally closed ports 211 and one or more normally open ports 212. Under any working condition, the normally open air port 212 is communicated with the air inlet 11, so that the minimum air inflow of the venturi device 100 is ensured, the opening degree of the normally closed air port 211 is adjusted through the ball valve 30 according to the load requirements, and thus, under different load requirements, enough air and gas inflow is ensured, and a better air-fuel ratio is obtained.
In an alternative embodiment, as shown in fig. 2, fig. 3, fig. 4 to fig. 7, the inner wall of the gas flow passage 13 is provided with a slide 14 for sliding the ball valve 30, the ball valve 30 closes the normally closed air port 211 at a low point, and the sliding stroke of the ball valve 30 is positively correlated to the air pressure of the air inlet 11. That is to say, the ball valve 30 is located at the low position and completely coincides with the normally closed air opening 211, at this time, the ball valve 30 is closely attached to the normally closed air opening 211, the normally closed air opening 211 does not blow out air, and under the condition that the air pressure is large enough, the ball valve 30 can slide from the low point to the high point, so as to gradually open the normally closed air opening 211. When the wind pressure is reduced, the ball valve 30 returns to the lowest position of the slideway 14 under the action of the gravity of the ball valve. Therefore, the sliding path of the ball valve 30 from the low point to the high point can be controlled through the wind pressure, and the ball valve 30 is reset from the high point to the low point by means of the gravity of the ball valve, so that the ball valve 30 is guaranteed to effectively adjust the air inflow participating in mixing.
In an optional embodiment, the slide way 14 is an arc-shaped slide way 14 extending along the circumferential direction of the inner wall of the airflow channel, and a first limiting rib 41 and a second limiting rib 42 are respectively disposed at two ends of the arc-shaped slide way 14. Namely, the sliding track of the ball valve 30 is limited by the first limiting rib 41 and the second limiting rib 42, so that the influence of the ball valve 30 on the air output of the normally open air port 212 is avoided, and the air input of the air participating in mixing is better adjusted.
Further optionally, the slideway 14 is a semi-circular slideway 14, one half of the semi-circular slideway 14 being the lowest point. That is to say, the stroke that the ball valve 30 can slide according to the clockwise is equal with the stroke that can slide according to the anticlockwise, like this, can make the ball valve 30 adapt to the wind pressure of different wind directions, improves the reliability and the sensitivity of ball valve 30.
In other embodiments of the present invention, the gas nozzle 12 includes a normally open gas nozzle 122 corresponding to the normally open port 212, and a normally closed gas nozzle 121 corresponding to the normally closed port 211. That is, the gas nozzles 12 are also classified into two types, one type being normally open and the other type being normally closed (i.e., selectively open), wherein the normally closed gas nozzle 121 and the normally closed air port 211 are opened or closed in synchronization, so that the supply amount of the gas amount and the air amount can be increased or decreased in synchronization, ensuring that the venturi device 100 obtains a preferable air-fuel ratio.
Wherein, the normally closed air opening 211 is positively correlated with the opening of the normally closed gas nozzle 121. I.e., the intake amounts of air and gas are positively correlated, so that a better air-fuel ratio can be obtained.
In a preferred embodiment, the ball valve 30 synchronously adjusts and adjusts the opening of the normally closed air inlet 211 and the normally closed gas nozzle 121. That is, when the ball valve 30 is located at the low point, a part of the spherical surface of the ball valve 30 is closely attached to the normally closed air inlet 211, and another part of the spherical surface of the ball valve 30 is closely attached to the normally closed gas inlet. The ball valve 30 can simultaneously open or close the normally closed air port 211 and the normally closed gas nozzle 121, thereby simultaneously increasing or decreasing the air and gas intake amounts.
In one embodiment, the air inlet 11 is located at one axial end of the body 10, and the gas nozzle 12 is formed on the inner wall of the gas flow passage 13 and located downstream of the restrictor plate 20. That is, the air in the gas flow passage 13 flows in the axial direction thereof, and the gas is injected into the gas flow passage 13 from the circumferential direction to be mixed with the air, thereby achieving premixing downstream of the gas flow passage 13.
In other embodiments of the present invention, the venturi device 100 includes a throat section 16 and a flare section 17 connected in sequence, the throat section 16 having a constant cross section, the gas nozzle 12 and the ball valve 30 are all located in the throat section 16. The utility model discloses discovery among the people's research experiment, the air current removes the process from throat section 15 to throat section 16, and the wind speed can promote suddenly, and it is obvious to form the negative pressure, how to inhale this throat section 16 with gas and air, makes its intensive mixing.
According to the utility model discloses gas equipment includes the venturi device 100 of above-mentioned embodiment, because according to the utility model discloses the air-fuel ratio control range of venturi device is big, can be applicable to the gas equipment of different load demands, consequently, according to the utility model discloses gas equipment's air-fuel ratio is good.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.
Claims (12)
1. A venturi device, comprising:
a body defining a gas flow passage having an air inlet and a gas burner, air and gas being mixed within the gas flow passage;
the flow limiting plate is arranged in the gas flow channel and defines an air port communicated with the air inlet;
and the ball valve is slidably arranged on the inner wall surface of the gas flow passage and used for adjusting the flow area of the air port.
2. The venturi device of claim 1, wherein the air ports comprise at least one normally closed air port and at least one normally open air port, and the ball valve is used for adjusting the opening size of the normally closed air port.
3. The venturi device according to claim 2, wherein the inner wall of the gas channel is provided with a slide for the ball valve to slide, the sliding stroke of the ball valve is positively correlated to the wind pressure of the air inlet, and the ball valve closes the normally closed air port at a low point.
4. The venturi device according to claim 3, wherein the slide is an arc-shaped slide extending along a circumferential direction of the inner wall of the gas flow passage, and a first limiting rib and a second limiting rib are respectively disposed at two ends of the arc-shaped slide.
5. The venturi device of claim 4, wherein the slideway is a semi-circular slideway, one-half of which is the lowest point.
6. The venturi device of any one of claims 2-5, wherein the gas nozzle comprises a normally open gas nozzle corresponding to the normally open port, and a normally closed gas nozzle corresponding to the normally closed port.
7. The venturi device of claim 6, wherein the opening of the normally closed air port and the normally closed gas nozzle are positively correlated.
8. The venturi device of claim 6, wherein the ball valve synchronously adjusts the opening of the normally closed tuyere and the normally closed gas nozzle.
9. The venturi device of claim 8, wherein the air inlet is located at an axial end of the body, and the gas burner is formed in an inner wall of the gas flow passage downstream of the restrictor plate.
10. The venturi device of any one of claims 1-5 or 7-9, wherein the venturi device comprises a throat section, a constant cross-section throat section and a flared section connected in series, the gas nozzle and the ball valve being disposed in the throat section.
11. The venturi device of any one of claims 2-5 or 7-9, wherein the opening of the normally closed tuyere is smaller than the opening of the normally open tuyere.
12. A gas-fired appliance, comprising:
the venturi device of any one of claims 1-11;
the shell is arranged on the outer side of the body, and a gas channel communicated with the gas nozzle is limited by the shell and the body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920987549.2U CN210485715U (en) | 2019-06-25 | 2019-06-25 | Venturi device and gas equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920987549.2U CN210485715U (en) | 2019-06-25 | 2019-06-25 | Venturi device and gas equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210485715U true CN210485715U (en) | 2020-05-08 |
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ID=70514997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920987549.2U Active CN210485715U (en) | 2019-06-25 | 2019-06-25 | Venturi device and gas equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210485715U (en) |
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2019
- 2019-06-25 CN CN201920987549.2U patent/CN210485715U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230307 Address after: 241000 west side of 3 / F, No.5 office building, new energy and new materials gathering area, Fuzhou Road, Jiangbei District, Wuhu City, Anhui Province Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd. Address before: 241009 Wan Chun East Road, East District, Wuhu economic and Technological Development Zone, Anhui Patentee before: WUHU MIDEA KITCHEN AND BATH APPLIANCES MFG. Co.,Ltd. |
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| TR01 | Transfer of patent right |