CN216407798U - A gas valve capable of controlling air volume and a commercial gas stove - Google Patents

Abstract

The utility model discloses a gas valve capable of controlling air volume and a commercial gas stove, belonging to the technical field of valves, and comprising a valve casing, wherein a first valve rod is connected on the valve casing, and the gas valve is characterized in that: the air quantity control valve is characterized in that a pointer is fixed on the first valve rod, a position sensor for detecting the position of the pointer is arranged on the valve shell, the position sensor is connected with a controller, the controller calculates an air quantity value according to a signal of the position sensor and a set air-air ratio set value, and the controller outputs an air quantity control signal according to the air quantity value. The pointer is fixed on the first valve rod of the gas valve, so that the pointer rotates along with the first valve rod, the position sensor transmits a position signal of the pointer to the controller, the controller calculates an air outlet quantity value according to the signal of the position sensor and a set air-air ratio set value, an external execution mechanism is driven through a mode of outputting an air quantity control signal, the air quantity of the fan is controlled, and therefore a better air quantity-gas ratio is automatically realized, gas can be fully combusted, heat loss can be reduced, and energy is saved better.

Description

A gas valve capable of controlling air volume and a commercial gas stove

technical field

The utility model belongs to the technical field of valves, in particular to a gas valve capable of controlling air volume and a commercial gas stove.

Background technique

In my country, where Chinese food is the mainstay, hotels, canteens and central kitchens are equipped with commercial gas stoves for cooking Chinese food. The working conditions of the existing commercial gas stove are roughly as follows: air and gas enter the combustion chamber through the air inlet pipe and the air inlet pipe respectively, and after ignition, a burning flame is formed, and the flame passes through the ignition hole to heat the cooker placed on the furnace. This requires supplying both air and gas.

The air and gas required by the existing commercial gas stoves are basically supplied independently, and the chefs adjust the supply of the two according to their experience, so as to control the mixing ratio of the two, which not only improves the experience requirements of the chefs, but also makes it difficult to meet the air requirements. The best mix ratio with gas. Generally, a more stable matching method with a large amount of air is adopted. Although this method can improve the combustion efficiency of the gas, the discharge of excess air will also increase the loss of heat. Insufficient air supply will affect the full combustion of gas, which not only results in waste of fuel energy, but also increases the gas cost of users.

Therefore, the commercial gas stove production industry needs to develop a gas valve that can control the air supply volume in linkage.

SUMMARY OF THE INVENTION

The technical problem to be solved by the utility model is to provide a gas valve and a commercial gas stove capable of controlling the air volume, which can give a control signal of the air supply volume according to the opening degree of the gas valve.

In order to solve the above-mentioned technical problems, the technical scheme of the present utility model is to design a gas valve capable of controlling the air volume, which includes a valve casing, and a first valve rod is connected to the valve casing, which is characterized in that: the first valve rod is fixed on the first valve rod. There is a pointer, there is a position sensor on the valve shell to detect the position of the pointer, the position sensor is connected to the controller, the controller calculates the air volume value according to the signal of the position sensor and the set value of the air-to-air ratio, and the controller outputs the air volume control according to the air volume value. Signal.

Further, a magnet is fixed on the pointer, the position sensor is a Hall sensor for sensing the magnetic field signal of the magnet, and the Hall sensor transmits the sensing signal to the controller.

Further, an instrument panel is provided on the controller, and the instrument panel can display the position of the pointer.

Further, the valve housing is provided with a first valve stem installation cylinder, and the first valve rod is fitted in the first valve rod installation cylinder.

Further, a valve cavity is opened in the valve shell, a first valve core is installed in the valve cavity, the first valve stem is connected to the first valve core, and the first valve core is provided with an air outlet and an inlet that communicates with the air outlet. Air holes, the cross-sectional area of the air inlet holes is smaller than that of the air outlet holes.

Further, the cross section of the air outlet is circular, the cross section of the air inlet is strip, and the cross section of the air inlet is a part of the cross section of the air outlet.

Further, a second valve core located behind the first valve core is also installed in the valve cavity, and an airflow adjustment hole and a rated flow hole are opened in the second valve core, and the rated flow hole and the airflow adjustment hole are arranged in a cross shape, The cross-sectional area of the rated flow orifice is smaller than that of the airflow adjustment orifice.

Further, the valve housing is provided with a second valve stem installation cylinder, a second valve rod is fitted in the second valve rod installation cylinder, and the second valve rod is connected to the second valve core.

The utility model also provides a commercial gas stove, which includes a gas valve, and is characterized in that: the gas valve is the above-mentioned gas valve capable of controlling the air volume.

Compared with the prior art, the beneficial effects of the present utility model are:

1. Since the pointer is fixed on the first valve rod, the pointer rotates with the first valve rod, the position sensor transmits the position signal of the pointer to the controller, and the controller calculates according to the signal of the position sensor and the set air-air ratio setting value The output air volume value, through the output air volume control signal, drives the external actuator to control the air supply volume of the fan, so as to automatically achieve the best air volume and gas ratio, which can not only make the gas fully burn, but also reduce the heat loss, better energy saving.

2. Since the position sensor is a Hall sensor and a magnet is fixed on the pointer, the contactless connection between the pointer and the position sensor can be realized, which is easier to realize.

3. As there is a dashboard on the controller, the dashboard can display the position of the pointer, which is convenient for the chef to intuitively understand the size of the gas opening.

4. Since the valve shell is provided with the first valve stem installation cylinder, the fitting contact area of the first valve stem can be increased, which is beneficial to improve the sealing performance and avoid the leakage of gas from the first valve stem.

5. Since the first valve core is provided with an air outlet and an air inlet connected to the air outlet, the cross-sectional area of the air inlet is smaller than that of the air outlet, on the one hand, the recent flow rate can be reduced, which is conducive to the precise adjustment of gas; on the other hand The intake air is buffered in the larger outlet holes, which is beneficial to reduce the exhaust noise.

6. Since the second valve core is provided with an airflow adjustment hole and a rated flow hole, the rated flow hole and the airflow adjustment hole are arranged in a cross shape, and the cross-sectional area of the rated flow hole is smaller than the airflow adjustment hole, which can realize the micro-adjustment of gas. And make the airflow adjustment hole and the rated flow hole alternately on and off, that is, when the airflow adjustment hole is closed, the rated flow hole is opened, and the supply of the rated gas flow can still be achieved.

7. The utility model can automatically output a control signal for controlling the air volume according to the opening degree of the gas, so that the supply volume of the gas is related to the air supply volume, and energy saving is realized through a better gas volume ratio, which is convenient for popularization in this field. application.

Description of drawings

Fig. 1 is the three-dimensional structure diagram of the present utility model;

Fig. 2 is A-direction view in Fig. 1;

Fig. 3 is B-B sectional view in Fig. 2;

Fig. 4 is C-C sectional view in Fig. 3;

Figure 5 is an electrical schematic diagram of the present invention.

Markings in the figure: 1, valve shell; 2, air inlet; 3, air outlet; 4, first valve stem installation cylinder; 5, first valve stem; 6, instrument panel; 7, controller; 8, magnet; 9. The second valve stem installation cylinder; 10, the second valve stem; 11, the pointer; 12, the Hall sensor; 13, the first valve core; 14, the air inlet; 15, the air volume control signal; 16, the second valve Core; 17. Airflow adjustment hole; 18. Rated flow hole; 19. Air outlet hole; 20. Valve cavity.

Detailed ways

The present utility model will be described in further detail below with reference to the accompanying drawings and specific embodiments.

Referring to the flow direction of the gas in the valve housing 1, the present invention defines the end where the gas enters as the front end, and the other end where the gas leaves is defined as the rear end; the plane perpendicular to the gas flow direction is defined as the cross section.

As shown in FIG. 1 and FIG. 2 , the valve housing 1 is provided with a first valve stem installation cylinder 4 in the present invention, the first valve rod installation cylinder 4 is equipped with a first valve rod 5 , and the valve housing 1 is provided with a valve The valve housing 1 is provided with an air inlet 2 and an air outlet 3 that communicate with the valve chamber 20. As shown in FIG. 3, a first valve core 13 is installed in the valve chamber 20 on the side close to the air inlet 2. A valve rod 5 is connected to the first valve core 13. As shown in FIG. 4, the first valve core 13 is provided with an air outlet hole 19 and an air inlet hole 14 communicating with the air outlet hole 19, and the cross section of the air outlet hole 19 is designed as a circle The cross section of the air intake hole 14 is designed as a strip shape, and the cross section of the air intake hole 14 is a part of the cross section of the air outlet hole 19, so that the cross-sectional area of the air intake hole 14 is smaller than that of the air outlet hole 19, which can reduce the amount of air intake. The flow rate is conducive to the precise adjustment of the gas, and at the same time, the intake air is buffered in the larger air outlet hole 19, which is beneficial to reduce the exhaust noise. A pointer 11 is fixed on the first valve stem 5, a magnet 8 is installed on the pointer 11, and a Hall sensor 12 for sensing the magnetic field signal of the magnet 8 is also provided. As shown in FIG. 5, the Hall sensor 12 transmits the sensing signal to the control Device 7, the controller 7 calculates the air volume value according to the induction signal of the Hall sensor 12 and the set value of the air-air ratio, and the controller 7 outputs the air volume control signal 15 according to the air volume value, so as to complete the gas supply volume and the air supply volume. Joint control can automatically achieve the best air volume and gas ratio, which can not only make the gas fully burn, but also reduce the heat loss and save energy better.

In order to facilitate the micro-adjustment of gas, the present invention also installs a second valve core 16 located behind the first valve core 13 in the valve cavity 20 , so that the second valve core 16 is arranged close to the gas outlet 3 side. The second valve core 16 is provided with an airflow adjustment hole 17 and a rated flow hole 18 . The rated flow hole 18 and the airflow adjustment hole 17 are arranged in a cross shape. A second valve stem 10 is connected to the second valve core 16 , the valve housing 1 is provided with a second valve stem mounting barrel 9 , and the second valve stem 10 is fitted in the second valve stem mounting barrel 9 .

In order to facilitate the intuitive understanding of the supply of gas, the present invention is further provided with an instrument panel 6 on the controller 7 , and the instrument panel 6 can display the position of the pointer 11 . In order to make the structure more compact, the Hall sensor 12 is provided in the controller 7 .

The utility model also applies the above-mentioned gas valve capable of controlling the air volume to the gas stove to form a new type of commercial gas stove.

In use, the air inlet 2 is connected to the gas supply source, and the air outlet 3 is connected to the combustion chamber through a gas pipe. Twist the first valve stem 5 so that both the air inlet hole 14 and the air outlet hole 19 of the first valve core 13 are connected to the valve cavity 20 , that is, the first valve core 13 is opened, and the first valve core 13 can be adjusted through the first valve stem 5 . The opening degree of the valve core 13. When the first valve stem 5 rotates, it also drives the pointer 11 to rotate, thereby changing the position of the magnet 8, the magnetic field intensity sensed by the Hall sensor 12 changes, and the controller 7 determines the gas flow according to the induction signal of the Hall sensor 12, Then calculate the air supply volume value according to the set optimal air-to-air ratio, and output the signal in the form of a control signal.

In the above process, according to the working state of the gas stove, the second valve stem 10 can be twisted to realize the micro-adjustment of the gas, and the airflow adjustment hole 17 can also be closed, and the rated flow hole 18 can be opened to supply the minimum gas volume and maintain Keep the fire on and avoid frequent re-firing.

In addition to the inductive position sensor composed of the above-mentioned magnet 8 and the Hall sensor 12, a position sensor composed of a sliding resistance sheet can also be used, which can also output electrical signals of different intensities as the position of the pointer 11 changes. The sensor requires the pointer 11 to be in contact with the sliding resistance sheet, and it is convenient to install without an inductive position sensor.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to change or remodel to equivalent changes. Equivalent Example. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solutions of the present invention still belong to the protection scope of the technical solutions of the present invention.

Claims (9)

1. The utility model provides a can control gas valve of amount of wind, includes the valve casing, is connected with first valve rod, its characterized in that on the valve casing: the air quantity control valve is characterized in that a pointer is fixed on the first valve rod, a position sensor for detecting the position of the pointer is arranged on the valve shell, the position sensor is connected with a controller, the controller calculates an air quantity value according to a signal of the position sensor and a set air-air ratio set value, and the controller outputs an air quantity control signal according to the air quantity value.

2. A gas valve capable of controlling an amount of air according to claim 1, wherein: the pointer is fixed with a magnet, the position sensor is a Hall sensor for sensing a magnetic field signal of the magnet, and the Hall sensor transmits the sensing signal to the controller.

3. A gas valve capable of controlling an amount of air according to claim 2, wherein: and the controller is provided with an instrument panel which can display the position of the pointer.

4. A gas valve capable of controlling an amount of air according to claim 1, wherein: be equipped with a valve rod installation section of thick bamboo on the valve casing, a valve rod is assembled in a valve rod installation section of thick bamboo.

5. A gas valve capable of controlling the amount of air according to any one of claims 1 to 4, wherein: the valve comprises a valve shell, a valve cavity is arranged in the valve shell, a first valve core is arranged in the valve cavity, a first valve rod is connected to the first valve core, an air outlet and an air inlet communicated with the air outlet are arranged in the first valve core, and the cross section area of the air inlet is smaller than that of the air outlet.

6. A gas valve capable of controlling an amount of air according to claim 5, wherein: the cross section of the air outlet is circular, the cross section of the air inlet is strip-shaped, and the cross section of the air inlet is one part of the cross section of the air outlet.

7. A gas valve capable of controlling an amount of air according to claim 5, wherein: the valve cavity is also provided with a second valve core positioned behind the first valve core, the second valve core is internally provided with an air flow adjusting hole and a rated flow hole, the rated flow hole and the air flow adjusting hole are arranged in a crossed manner, and the cross section area of the rated flow hole is smaller than that of the air flow adjusting hole.

8. A gas valve capable of controlling an amount of air according to claim 7, wherein: and a second valve rod mounting cylinder is arranged on the valve shell, a second valve rod is assembled in the second valve rod mounting cylinder, and the second valve rod is connected to the second valve core.

9. A commercial gas-cooker, includes the gas valve, its characterized in that: the gas valve is the gas valve capable of controlling air volume according to any one of claims 1 to 8.

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