CN113374912A - Method and device for adjusting ratio of air blast and fuel gas of commercial stove - Google Patents
Method and device for adjusting ratio of air blast and fuel gas of commercial stove Download PDFInfo
- Publication number
- CN113374912A CN113374912A CN202110643913.5A CN202110643913A CN113374912A CN 113374912 A CN113374912 A CN 113374912A CN 202110643913 A CN202110643913 A CN 202110643913A CN 113374912 A CN113374912 A CN 113374912A
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- China
- Prior art keywords
- blower
- gas
- controller
- operating part
- valve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/005—Electrical or magnetic means for measuring fluid parameters
Abstract
The invention discloses a method and a device for adjusting the proportion of blast and gas of a commercial stove. The method comprises the steps that the gas flow passing through the gas valve is adjusted by moving the position of the operation portion of the gas valve, meanwhile, the moving position of the operation portion is converted into an electric signal and is acquired by the controller, and the controller outputs an adjusting signal to the blower and adjusts the blowing flow output by the blower. The device comprises a gas valve, a blower, a controller and an operation part position signal acquisition structure; the gas valve comprises a valve body and an operating part, and the operating part position signal acquiring structure is matched with the operating part; the operation part position signal acquisition structure and the air blower are electrically connected with the controller. The method and the device for adjusting the ratio of the blast air to the fuel gas of the commercial stove are convenient to adjust, energy-saving and environment-friendly, and the blower can adopt a common alternating current blower, so that the cost is low.
Description
Technical Field
The invention relates to the field of commercial stoves, in particular to a method and a device for adjusting the proportion of blast and gas of a commercial stove.
Background
In commercial stoves, the main fire is generated by feeding air and gas into the burner to be mixed and then ignited by the ignition of the flame. The combustion efficiency and the heat value are related to the reasonable mixing of the fuel gas and the air, and the firepower is related to the amount of the mixed fuel gas. However, the current commercial furnaces have the following problems: 1) when the firepower of the stove is adjusted, a gas valve and a blower are respectively operated, and gas and air mixed gas with proper proportion is difficult to obtain in a short time; 2) although can adopt the fixed mode of air-blower air output, the gas output quantity when the gas valve is less, and the firepower is required less, and the air-blower air output quantity at this moment is still great, not only can blow away the gas, can take away a large amount of heats moreover, leads to the heat to conduct to the pot body well on, causes the energy extravagant, also has very big noise simultaneously, influences operational environment.
Disclosure of Invention
The invention aims to provide a method and a device for adjusting the proportion of blast and gas of a commercial stove, which are convenient to adjust, energy-saving and environment-friendly.
In order to achieve the above object, the present invention provides a method for adjusting the ratio of blast and gas of a commercial stove, comprising the following steps: the gas flow passing through the gas valve is adjusted by moving the position of the operation part of the gas valve, meanwhile, the moving position of the operation part is converted into an electric signal and is acquired by the controller, and the controller outputs an adjusting signal to the air blower and adjusts the air blowing flow output by the air blower.
As a further improvement of the invention, the controller adjusts the rotation speed of the blower by adjusting the voltage of the blower, thereby adjusting the blowing flow rate of the blower.
As a further improvement of the present invention, the flow rate of the gas introduced into the burner is regulated by the amplitude of the movement of the operating portion with respect to the home position, while the amplitude of the movement of the operating portion with respect to the home position is converted into an electric signal and acquired by the controller.
As a further improvement of the present invention, the controller acquires the moving amplitude of the operating part relative to the start position in a multi-point or continuous manner; the magnitude of the movement of the operating portion relative to the home position is in direct proportion to the flow rate of gas through the gas valve, and the magnitude of the movement of the operating portion relative to the home position is in direct proportion to the flow rate of blast air output by the blower.
As a further improvement of the present invention, the operation portion is rotated to change the movement position.
In order to achieve the above object, the present invention further provides a commercial stove blower and gas ratio adjusting device, comprising a gas valve, a blower, a controller and an operation part position signal acquiring structure; the gas valve comprises a valve body and an operating part, and the operating part position signal acquiring structure is matched with the operating part; the operation part position signal acquisition structure and the air blower are electrically connected with the controller.
As a further improvement of the invention, the gas valve is a ball valve; the operating part is a rotating handle, and the rotating handle is connected with a valve core of the gas valve.
As a further improvement of the present invention, the operating portion position signal acquiring structure is a multi-point signal acquiring structure or a continuous signal acquiring structure.
As a further improvement of the present invention, the operation portion position signal acquiring structure is an electromagnetic induction type sensing structure, which includes a plurality of sensing elements and a position reference member; the plurality of sensing elements are arranged on the valve body of the gas valve and are sequentially arranged along the moving position of the operation part; the position reference member is arranged on the operation part; each sensing element is electrically connected with the controller.
As a further improvement of the present invention, the blower is electrically connected to a blower voltage adjusting circuit, and the controller is electrically connected to the blower through the blower voltage adjusting circuit.
Advantageous effects
Compared with the prior art, the method and the device for adjusting the proportion of the blast air and the fuel gas of the commercial stove have the advantages that:
1. when the gas flow of the gas valve is adjusted through the operation part, the controller obtains the moving position of the operation part through the operation part position signal acquisition structure and adjusts the blowing flow of the blower, so that the gas and air flow ratio is ensured in a better range, the optimal air/gas mixing state is achieved, and the noise of the blower is reduced when only a fire is started. This mode is convenient operation not only, is favorable to letting the gas fully burn, increases the thermal efficiency, replaces the mode of mechanical structure linkage through automatically controlled mode simultaneously, can avoid mechanical loss to lead to adjusting inaccurately, avoids commercial stove service environment's oil smoke to adhere to and leads to the transmission inaccuracy, short service life scheduling problem on mechanical structure, has also reduced equipment cost. In addition, when the opening degree of the gas valve is smaller, the blowing flow of the air blower is smaller at the moment, the gas in the furnace end is not easy to blow away, and meanwhile, the problem that the heat loss is larger due to the fact that the heat of the furnace end is taken away by the larger blowing flow is avoided, the purposes of energy saving and environment protection are achieved, and 20% -30% of energy can be saved when the gas valve is used.
2. The controller adjusts the rotating speed of the air blower by adjusting the voltage, so that the air blowing flow of the air blower is adjusted, the control is simple, an additional mechanical structure is not required to be added, the cost is low, and the air blower is not easy to damage. And is suitable for common alternating current fans, and the cost of the fans is low.
3. The gas flow and the blast flow of the gas valve are in direct proportional relation with the moving amplitude of the operating part relative to the initial position, and the gas valve is convenient for a person to judge the gas and blast sizes more intuitively during adjustment.
The invention will become more apparent from the following description when taken in conjunction with the accompanying drawings, which illustrate embodiments of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the structure of a commercial stove blower and gas proportioning device;
FIG. 2 is a schematic diagram of the circuit control of the commercial stove blower and gas proportioning device;
FIG. 3 is a schematic diagram of a gas valve and continuous signal acquisition architecture.
Detailed Description
Embodiments of the present invention will now be described with reference to the accompanying drawings.
Examples
Detailed description of the inventionas shown in fig. 1 to 2, a commercial oven air blowing and gas proportion adjusting apparatus includes a gas valve 1, an air blower 2, a controller 3, and an operation portion position signal acquiring structure. The gas valve 1 includes a valve body and an operating portion 11, and an operating portion position signal acquiring structure is fitted to the operating portion 11. The operation portion position signal acquiring structure and the blower 2 are electrically connected to the controller 3.
In this embodiment, the gas valve 1 is a ball valve. The operating part 11 is a rotating handle, and the rotating handle is connected with a valve core of the gas valve 1.
The operation portion position signal acquisition structure is a multipoint signal acquisition structure or a continuous signal acquisition structure. In the present embodiment, the operation portion position signal acquiring structure is a multi-point signal acquiring structure, and specifically, the operation portion position signal acquiring structure is an electromagnetic induction type sensing structure 4 including a plurality of sensing elements 42 and a position reference member 41. The sensing element 42 may be a hall element, and the position reference member 41 is a magnet. Several sensing elements 42 are provided on the valve body of the gas valve 1 and are arranged in sequence along the moving position of the operating portion 11. The position reference member 41 is provided on the operation portion 11. Each sensing element 42 is electrically connected to the controller 3. In this embodiment, a plurality of sensing elements 42 are provided on the valve body of the gas valve 1 and are arranged in sequence around the rotational axis of the rotating handle. The more the inductive element 42 is set, the more the adjustable gears are, the more the blower 2 can select the blast flow rate gears, the more the stages of proportional mixing of gas and air can be realized, and the more precise adjustment can be realized. A closed box body is arranged on a valve body of the gas valve 1, and each Hall element is specifically arranged in the box body.
The blower 2 is electrically connected with a blower voltage adjusting circuit 5, and the controller 3 is electrically connected with the blower 2 through the blower voltage adjusting circuit 5. In addition to the voltage regulation, a blower current regulation circuit may be optionally used to regulate the rotation speed of the blower 2 by current regulation, thereby regulating the blowing flow rate of the blower 2.
When in use, the method for adjusting the blast air and the fuel gas proportion of the commercial stove comprises the following steps: the gas flow passing through the gas valve 1 is adjusted by moving the position of the operating part 11 of the gas valve 1, meanwhile, the moving position of the operating part 11 is converted into an electric signal and is acquired by the controller 3, and the controller 3 outputs an adjusting signal to the blower 2 to adjust the blowing flow output by the blower 2. In this embodiment, since the operation portion 11 is a rotary handle, the operation portion 11 changes its moving position by rotating.
Since the controller 3 is electrically connected to the blower 2 through the blower voltage adjusting circuit 5, the controller 3 adjusts the rotation speed of the blower 2 by adjusting the voltage of the blower 2, thereby adjusting the blowing flow rate of the blower 2.
When the operation portion 11 is located at the home position, the gas valve 1 is in a closed state. The flow rate of the gas entering the burner is regulated by the amplitude of the movement of the operating portion 11 with respect to the home position, while the amplitude of the movement of the operating portion 11 with respect to the home position is converted into an electrical signal and acquired by the controller 3.
The magnitude of the movement of the operation portion 11 with respect to the home position is in direct proportion to the gas flow rate through the gas valve 1, and the magnitude of the movement of the operation portion 11 with respect to the home position is in direct proportion to the blowing flow rate output by the blower 2, i.e., the greater the magnitude of the movement of the operation portion 11 with respect to the home position, the greater the opening degree of the gas valve 1, the greater the gas flow rate, and the greater the blowing flow rate of the blower 2.
The method does not limit the moving path of the operating part 11 on the gas valve 1, except for the scheme that the operating part 11 is a rotating handle in the above embodiment, the operating part 11 can also be linearly moved, the valve body of the gas valve 1 is a valve which is linearly moved at the moment, when the position of the operating part 11 is changed along a straight line, the position information can be converted into an electric signal through the matched position reference piece 41 and the plurality of sensing elements 42 and is acquired by the controller 3, and the controller 3 outputs an adjusting signal to the blower 2 to adjust the blowing flow output by the blower 2.
Further, when the gas flow rate of the gas valve 1 is adjusted by the operating portion 11, it is not limited to only adjusting the movement amplitude of the operating portion 11 with respect to the initial position, and other manners may be adopted, such as the operating portion 11 being in gear position 1 at a distance forward with respect to the initial position, the operating portion 11 being in gear position 2 at a distance backward with respect to the initial position, and the positions of both the gear positions 1 and 2 being the same as the distance from the initial position, but it may be set such that the gas flow rate through the gas valve 1 when the operating portion 11 is in gear position 1 is smaller than the gas flow rate through the gas valve 1 when the operating portion 11 is in gear position 2.
In the above embodiment, the controller 3 acquires the moving width of the operating portion 11 with respect to the home position in a multi-point manner. The controller 3 may acquire the movement width of the operating unit 11 with respect to the home position continuously, that is, continuously acquire the position signal as the operating unit 11 moves. As shown in fig. 3, taking the gas valve 1 as a ball valve and the operation portion 11 as a rotary handle as an example, the operation portion position signal acquisition structure is a continuous signal acquisition structure, and includes a slide rheostat main body 61 and a slide sheet 62, the slide rheostat main body 61 is disposed on the valve body of the gas valve 1 and the center line thereof is arranged around the rotation axis of the rotary handle, the slide sheet 62 is fixed on the rotary handle, and one end of the slide rheostat main body 61 and the slide sheet 62 are both electrically connected to the controller 3. As the rotary handle rotates continuously, the effective resistance of the sliding rheostat body 61 changes continuously, the output current also changes continuously, and the controller 3 can also continuously obtain an electric signal of the movement amplitude of the rotary handle. When the rotary handle is located at the home position, the resistance of the sliding rheostat body 61 is minimized. As the rotary handle is gradually displaced from the initial position, the gas flow rate is gradually increased, the resistance of the slide rheostat main body 61 is also gradually increased, and the current signal is also gradually changed.
In addition to the above-described embodiments, the controller 3 may also adjust the rotation speed of the blower 2 by means of an inverter.
The present invention has been described in connection with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, and is intended to cover various modifications, equivalent combinations, which are made in accordance with the spirit of the present invention.
Claims (10)
1. A method for adjusting the ratio of blast air to gas of a commercial stove, comprising the steps of: the gas flow passing through the gas valve (1) is adjusted by moving the position of the operating part (11) of the gas valve (1), meanwhile, the moving position of the operating part (11) is converted into an electric signal and is acquired by the controller (3), and the controller (3) outputs an adjusting signal to the blower (2) to adjust the blowing flow output by the blower (2).
2. A commercial stove air and gas ratio regulation method as claimed in claim 1, characterized in that the controller (3) regulates the speed of the blower (2) by regulating the voltage of the blower (2) to regulate the air flow of the blower (2).
3. A commercial stove blowing and gas ratio regulating method according to claim 1, characterized in that the gas flow into the burner is regulated by the amplitude of the movement of the operating part (11) with respect to the starting position, while the amplitude of the movement of the operating part (11) with respect to the starting position is converted into an electrical signal and picked up by the controller (3).
4. A commercial stove blowing and gas ratio regulation method according to claim 3, characterized in that the controller (3) acquires the movement amplitude of the operating part (11) relative to the starting position in a multi-point or continuous manner; the magnitude of the movement amplitude of the operation part (11) relative to the initial position is in direct proportion to the gas flow rate passing through the gas valve (1), and the magnitude of the movement amplitude of the operation part (11) relative to the initial position is in direct proportion to the blowing flow rate output by the blower (2).
5. A commercial stove blowing and gas ratio regulation method as claimed in claim 1 or 2 or 3 or 4, characterized in that the operating part (11) effects the change of the displacement position by rotation.
6. The commercial stove blowing and gas ratio adjusting device is characterized by comprising a gas valve (1), a blower (2), a controller (3) and an operation part position signal acquiring structure; the gas valve (1) comprises a valve body and an operating part (11), and the operating part position signal acquiring structure is matched with the operating part (11); the operation part position signal acquisition structure and the blower (2) are electrically connected with the controller (3).
7. A commercial stove blowing and gas proportioning device according to claim 6 wherein the gas valve (1) is a ball valve; the operating part (11) is a rotating handle, and the rotating handle is connected with a valve core of the gas valve (1).
8. The commercial stove air and fuel ratio adjusting apparatus of claim 7, wherein the operating portion position signal obtaining structure is a multi-point signal obtaining structure or a continuous signal obtaining structure.
9. A commercial stove air and gas proportioning device according to claim 6 or 7 wherein the operating portion position signal obtaining structure is an electromagnetic induction type sensing structure (4) comprising several sensing elements (42) and position references (41); the sensing elements (42) are arranged on the valve body of the gas valve (1) and are sequentially arranged along the moving position of the operating part (11); the position reference member (41) is provided on the operation portion (11); each sensing element (42) is electrically connected with the controller (3).
10. A commercial stove blower and gas proportioning device according to claim 6, characterized in that the blower (2) is electrically connected to a blower voltage adjusting circuit (5), and the controller (3) is electrically connected to the blower (2) through the blower voltage adjusting circuit (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110643913.5A CN113374912A (en) | 2021-06-09 | 2021-06-09 | Method and device for adjusting ratio of air blast and fuel gas of commercial stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110643913.5A CN113374912A (en) | 2021-06-09 | 2021-06-09 | Method and device for adjusting ratio of air blast and fuel gas of commercial stove |
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| Publication Number | Publication Date |
|---|---|
| CN113374912A true CN113374912A (en) | 2021-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110643913.5A Pending CN113374912A (en) | 2021-06-09 | 2021-06-09 | Method and device for adjusting ratio of air blast and fuel gas of commercial stove |
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Citations (16)
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| DE19601517A1 (en) * | 1996-01-17 | 1997-07-24 | Stiebel Eltron Gmbh & Co Kg | Regulator for gas heater with burner and gas valve |
| EP0863367A1 (en) * | 1997-03-05 | 1998-09-09 | Electrowatt Technology Innovation AG | Control device for a gas burner |
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| CN208487645U (en) * | 2018-04-24 | 2019-02-12 | 广州市东霸节能科技有限公司 | A kind of manual current limit adjusting mechanism of air hose air door |
| CN210372269U (en) * | 2019-07-26 | 2020-04-21 | 广州市东霸节能科技有限公司 | Gear display gas valve device |
| EP3680553A1 (en) * | 2019-01-10 | 2020-07-15 | Vaillant GmbH | Method for regulating the combustion air ratio of a burner of a heater |
-
2021
- 2021-06-09 CN CN202110643913.5A patent/CN113374912A/en active Pending
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| DE19601517A1 (en) * | 1996-01-17 | 1997-07-24 | Stiebel Eltron Gmbh & Co Kg | Regulator for gas heater with burner and gas valve |
| EP0863367A1 (en) * | 1997-03-05 | 1998-09-09 | Electrowatt Technology Innovation AG | Control device for a gas burner |
| US6019593A (en) * | 1998-10-28 | 2000-02-01 | Glasstech, Inc. | Integrated gas burner assembly |
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