CN201016399Y - Gas flow control valve with automatic return - Google Patents

Abstract

The utility model relates to a gas flow control valve with automatic return, which is arranged on a valve body for controlling the gas flow to control the gas output of gas combustion, and comprises a magnet body, a lead screw screwed with the magnet body, and an elastic component which is arranged on the lead screw in a penetrating way and provides the magnet body and the elastic force of the lead screw, wherein the magnet body and the lead screw are screwed together in a screwing way of a specific guide rail to form the flow control valve with automatic return function; therefore, the control of the flow control valve is utilized to adjust the gas outlet quantity of the combustion gas, so that the guide screw can automatically return to the closed position no matter the guide screw is positioned at any opening position.

Description

Gas flow control valve with automatic return

technical field

The utility model relates to a gas flow control valve with automatic recovery, especially a stepping motor solenoid valve with automatic recovery formed by the screwing of a specific guide rail and elastic components, regardless of where the lead screw of the flow control valve is located. The open position will automatically return to the closed position, and the output volume of the gas combustion gas can be precisely adjusted to ensure the safety of the intake volume.

Background technique

General water heaters can be divided into electric water heaters and water heaters heated by fuel gas. Among them, the water heater heated by fuel gas uses the heat energy generated during the combustion of fuel gas to increase the temperature of hot water. Therefore, the control and structure of the air intake mode determine the heating process and heating efficiency of hot water. After the traditional water heater heats the cold water, the user adjusts the hot and cold water source to achieve the suitable hot water temperature. Currently, many water heater designs on the market provide a constant temperature control function to keep the hot water temperature constant.

Existing thermostats for water heaters mainly use the temperature control circuit to control the gas flow by directly controlling the valve on and off of the differential pressure disc.

However, the prior art is more complicated in overall structural design, and its manufacturing cost is also higher; in addition, because in the existing water heater constant temperature device, its differential pressure plate utilizes elastic force to generate relative pressure, therefore, when When the frequency of use is too much, the time of use is too long, the variability of water flow is too large, or the pressure of combustion gas is too high, the elastic fatigue of the spring will occur, so that its elastic capacity will deteriorate, which will lead to failure, air intake The disadvantage of inaccurate measurement.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies and defects of the prior art, and propose a gas flow control valve with automatic recovery, which is installed on the valve body controlling the gas flow to control the gas output of the gas combustion gas. In the control valve, the specific threading method of the magnet and the lead screw, combined with the elastic force of the elastic component, forms a gas flow control valve with automatic recovery function. Screwed together with the elastic force of the elastic component to automatically return to the closed position, ensuring that the intake of combustion gas is closed at any time, achieving the effect of energy saving control and ensuring the safety of the gas output.

Another purpose of the present utility model is that the gas flow control valve is a stepping motor solenoid valve, by means of the control of the stepping motor solenoid valve, the gas combustion gas output volume can be adjusted actively and accurately.

In order to achieve the above purpose, the utility model provides a gas flow control valve with automatic recovery, which is a stepping motor type solenoid valve, installed on the valve body that controls the gas flow, and opposite to the flow channel chamber in the valve body Move to control the gas output of the gas. It is characterized in that the gas flow control valve includes: a magnet, which is a hollow magnetic body, and a first guide rail with a specific lead angle is formed in the magnet; a lead screw, whose Penetrated in the magnet body, the lead screw has a second guide rail with a specific lead angle, and the lead screw moves relative to the magnet body by using the mutual screwing of the first guide rail and the second guide rail to form an automatic A stepping motor solenoid valve with recovery function; and an elastic component, which is passed through the lead screw, and provides an elastic recovery force when the lead screw and the magnet body are screwed and moved.

The beneficial technical effect of the utility model is that when the gas flow control valve controls the gas output on the valve body, regardless of the open position of the lead screw rod of the solenoid valve, it can pass the screwing action between the specific guide rails, and at the same time match The elastic force formed by the elastic component automatically returns to the closed position to ensure that the gas outlet of the combustion gas is in the closed state, so as not to cause gas leakage and achieve energy saving.

Furthermore, the solenoid valve of the stepping motor can also be used to actively and precisely control the output of the combustion gas, providing the user with the option to adjust the flow of the gas.

In order to further understand the technology, means and effects that the utility model adopts to achieve the predetermined purpose, please refer to the following detailed description and accompanying drawings of the utility model, and believe that the purpose, features and characteristics of the utility model can be obtained from this For an in-depth and specific understanding, the attached drawings are only for reference and illustration, and are not intended to limit the present invention.

Description of drawings

Fig. 1A is a structural schematic diagram of the gas flow control valve with automatic recovery of the utility model;

Fig. 1B is a schematic diagram of the lead screw and the gas regulating valve in the closed position in Fig. 1A;

Fig. 2 is a schematic diagram of the gas flow control valve with automatic recovery of the present invention applied to the valve body device and in the open position.

Fig. 3 is a schematic diagram of the solenoid valve and the flow control valve in the closed position in Fig. 2 of the present utility model.

Explanation of symbols in the figure

1 valve body

10a Runner chamber 11a Outlet gate

10 intake gate 11 channel

12 Partition wall 13 First chamber

14 Second chamber 15 First opening

16 Second opening 17 Outlet chamber

18 Installation Department

2 solenoid valve group

20 Solenoid valve 21 Fixed seat

22 Solenoid coil group 23 On-off valve

24 Valve Plug 25 Fixed Assembly

26 Elastic components

3 flow control valve

30 magnet body 300 first guide rail

31 Lead screw 310 Second guide rail

32 Sleeve 33 Upper support

34, 34' magnet fixing piece 35 lower support piece

36 Air regulating valve plug 37 Elastic component

38, 38' bearing

Detailed ways

In order to further understand the features and technical content of the utility model, please refer to the following detailed description and accompanying drawings of the utility model.

Please refer to FIG. 1A to FIG. 1B , which are schematic diagrams of the gas flow control valve 3 with automatic recovery of the present invention. The gas flow control valve 3 is a stepping motor solenoid valve installed on the valve body 1 for controlling the gas flow to control the output of the gas combustion gas.

The gas flow control valve 3 includes: a magnet body 30, a lead screw rod 31, a sleeve 32, an upper support member 33, two magnet fixing members 34, 34′, a lower support member 35, a gas regulating valve plug 36 and Elastic component 37. Wherein the magnet 30 is a hollow magnetic body, the lead screw 31 is installed in the magnet 30, the lead screw 31 can reciprocate up and down relative to the magnet 30, the sleeve 32 is arranged on the valve body 1, The upper support member 33 is arranged at the bottom of the casing 32, the magnet fixing member 34 is installed on the upper support member 33, and another magnet fixing member 34′ cooperates with the magnet fixing member 34 to fix the magnet body 30, The lower support member 35 is used to fix the magnet fixing member 34′, and the gas regulating valve plug 36 is inserted at one end of the lead screw 31, and the gas regulating valve plug 36 is used as the gas outlet gate 11a corresponding to the flow channel chamber 10a. Relatively move up and down to adjust the combustion gas output of the flow channel chamber, the elastic component 37 is passed through the lead screw 31 and is located between the lower support 35 and the gas regulating valve plug 36, providing the lead screw 31 With the magnet body 30 an elastic force.

Wherein the flow control valve 3 is characterized in that: the inside of the magnet 30 has a first guide rail 300, the first guide rail 300 has a specific lead angle, the lead screw 31 also has a second guide rail 310, the second The guide rail 310 also has a specific lead angle, and the first guide rail 300 and the second guide rail 310 are screwed together, so that the lead screw 31 can move up and down relative to the magnet 30, and with the help of a specific lead angle The design can automatically return, so that the flow control valve 3 forms a stepping motor solenoid valve with automatic return function.

As a result, the lead screw 31 can move up and down relative to the gas outlet gate 11a of the flow channel chamber 10a, and be located in different opening or closing positions, so that the gas combustion gas circulating in the valve body 1 can be used by a stepping motor. The control of the type solenoid valve can selectively adjust the output of the gas combustion gas. At the same time, no matter whether the lead screw 31 is in any open position, it can automatically return to the closed position by virtue of the elastic force of the elastic component 37. , to close the air outlet gate 11a to ensure that the combustion gas is closed to achieve a safety effect.

In the gas flow control valve 3, the magnet body 30 is fixedly sleeved between the upper and lower magnet holders 34, 34', and the upper and lower support members 33, 35 fix the upper and lower magnets respectively. Fixing parts 34, 34', the upper and lower magnet fixing parts 34, 34' respectively have a guide rail (not shown) screwed together with the first guide rail 310, the lead screw 31 passes through the magnet fixing parts 34, 34 ' and screwed together with the magnet body 30 and the guide rail, the elastic component 37 is located between the lower support member 35 and the air regulating valve plug 36, so as to provide the guide screw rod 31 and the magnet body 30 with the elastic force of the elastic component 37 Spiral's reply.

In addition, a bearing 38 is arranged between the upper support member 33 and the magnet fixing member 34, and another bearing 38 ′ is arranged between the lower support member 35 and the other magnet fixing member 34 ′, so that when the magnet body 30 rotates , the lead screw 31 can be rotated more smoothly to move up and down. Wherein the upper support member 33 is an upper bearing support seat, and the lower support member 35 is a support seat for accommodating the elastic assembly 37. The elastic assembly 37 can be a compression spring or a tension spring, etc. Force components, the two bearings 38, 38' are rolling components such as a ball bearing or a thrust bearing.

Please refer to Fig. 2 to Fig. 3, it is the embodiment that the gas flow control valve with automatic return of the present invention is actually installed in a valve switch device, however, the present utility model is not limited to this valve switch device, any used Any devices, structures and other similar flow control valves for controlling gas flow all belong to the scope of the utility model.

In this embodiment, the valve switching device includes: a valve body 1, a solenoid valve group 2 disposed on the valve body 1 and a flow control valve 3 disposed on the valve body 1, wherein the solenoid valve group 2 has several electromagnetic valves 20, and the number of the electromagnetic valves 20 in the figure is two.

The valve body 1 has an inlet gate 10, a passage 11 connected to the inlet gate 10, and several partition walls 12 respectively arranged on the passage 11. The passage 11 is blocked by the partition walls 12 to form several A first chamber 13, a second chamber 14 and an air outlet chamber 17, each partition wall 12 offers a first opening 15 in each first chamber 13, and a first opening 15 in the second chamber 14. Two openings 16 , each of the first chamber 13 , the second chamber 14 and the air outlet chamber 17 can communicate with each other through the first opening 15 and the second opening 16 . Thus, the gas can pass through the inlet gate 10 to pass through the first opening 15 and the second opening 16 to flow through the first chamber 13 , the second chamber 14 and the gas outlet chamber 17 .

In the present utility model, each electromagnetic valve 20 of the electromagnetic valve group 2 is separately arranged on the valve body 1, each electromagnetic valve 20 corresponds to each first chamber 13, and can be opposite to each first opening 15 For closing and opening action, the flow control valve 3 is a stepping motor solenoid valve, the flow control solenoid valve 3 corresponds to the second chamber 14, and can reciprocate up and down relative to the second opening 16 to achieve Close open action. Wherein the flow control valve 3 has a magnet body 30 and a lead screw 31 matching the magnet body 30; the magnet body 30 is a hollow magnetic body used as an electric roller, and a first A guide rail 300, the lead screw rod 31 has a second guide rail 310 with a predetermined length, the guide screw rod 31 is movably penetrated in the magnet body 30, so that the lead screw rod 31 can reciprocate up and down relative to the magnet body 30 , and through the screwing of the first guide rail 300 and the second guide screw rail 310, the flow control valve 3 has an automatic recovery function.

Therefore, the flow control valve 3 can reciprocate up and down relative to the second opening 16 to form several open positions and a closed position to adjust and control the intake air volume of the combustion gas. A chamber 13, a second chamber 14 and an air outlet chamber 17, each electromagnetic valve 20 controls the intake volume of each first chamber 13, the flow control valve 3 controls the intake volume of the second chamber 14, and The intake air flow from the second chamber 14 to the outlet chamber 17; when the flow control valve 3 is in several different open positions, the intake air volume of the combustion gas is different, and in the closed position, the combustion gas The air intake volume can be blocked by the flow control valve 3 so that it cannot flow through, wherein no matter the lead screw 31 of the flow control valve 3 is in any open position, it can automatically return to the closed position by using an elastic force.

The electromagnetic valve group 2 has a fixed valve seat 21 for fixing the electromagnetic valve 20, the fixed valve seat 21 is arranged on the valve body 1, and each first electromagnetic valve 20 is fixed on the fixed valve seat 21, so as to Corresponding to the first chamber 13 respectively; wherein each electromagnetic valve 20 has an electromagnetic coil group 22 located on the fixed valve seat 21, an electromagnetic coil group 22 located in the electromagnetic coil group 22 and opposite to the first opening 15 A switch valve 23 that moves up and down, a valve plug 24 that is arranged on the switch valve 23 to open and close the first opening 15, a set of fixed components 25 that are set on the switch valve 23, and a set that is located on the switch valve 23 And the elastic component 26 located between the fixing component 25 and the valve plug 24, so that the switching valve 23 can reciprocate up and down relative to the first opening 15 in the first chamber 13 through the electromagnetic action of the electromagnetic coil group 22 Move to control the intake air volume in each first chamber 13 respectively. In addition, the valve body 1 is provided with several mounting portions 18 , and each of the first solenoid valve 20 and the second solenoid valve 3 can correspond to each mounting portion 18 .

Based on the above, the gas flow control valve with automatic recovery of the utility model has the following advantages:

1. Compared with the existing technology that uses the pressure difference generated by the elastic force to control the intake air volume, the utility model uses a stepping motor solenoid valve to adjust and control to achieve accurate air intake volume and reduce the failure rate.

2. Using the specific lead angle guide rail design of the lead screw and magnet body, the lead screw and magnet body have an automatic recovery function to control the gas combustion gas output, and it can automatically recover regardless of the open position of the lead screw rod When it reaches the closed position, it can be automatically closed, which can save the gas and air intake and ensure the safety of the gas output.

3. Not only is the overall structural design relatively simple, but also the assembly of components is relatively easy and fast, which can reduce its manufacturing cost.

The above is only a detailed description and drawings of one of the best specific embodiments of the present utility model, but the features of the present utility model are not limited thereto, and are not intended to limit the utility model and the entire scope of the utility model The claims shall prevail, and all embodiments that conform to the spirit of the claims of the utility model and other similar changes shall be included in the category of the utility model, and any person skilled in the art can easily think of All changes and modifications can be included within the scope of the claims.

Claims (5)

1. one kind has the gas flow control valve that automatically replies, and it is a stepper motor formula solenoid valve, is installed on the valve body of control gas flow, and the runner room in this valve body moves, gas output with control gas is characterized in that this gas flow control valve comprises:

One magnet body is a hollow magnetic, and formation one has first guide rail of specific angle of lead in this magnet body;

One driving screw, it is arranged in this magnet body, and this driving screw has second guide rail of a specific angle of lead, utilizes screwing togather mutually of this first guide rail and this second guide rail, this driving screw is moved relative to this magnet body, form a stepper motor formula solenoid valve with the function of automatically replying; And

One elastic component, it is arranged on this driving screw, provides an elastic-restoring force at this driving screw and magnet body when mobile in screwing togather.

2. as claimed in claim 1 have a gas flow control valve that automatically replies, it is characterized in that, also have a sleeve pipe that is arranged on this valve body, a upper supporting piece, that is arranged at this sleeve bottom is assemblied in the magnet fixed block of this upper supporting piece, the lower support element, that another this magnet fixed block of arranging in pairs or groups is fixed this magnet fixed block with the magnet fixed block, of fixing this magnet body is arranged in this driving screw one end to adjust the regulating the qi flowing in the channels valve plug of this runner room.

3. as claimed in claim 2 have a gas flow control valve that automatically replies, it is characterized in that, this magnet body is sheathed on this magnet fixed block, and this lower support element is fixed this magnet fixed block, this driving screw is arranged in the magnet fixed block and with this magnet body and screws togather, and this elastic component is positioned between this lower support element and regulating the qi flowing in the channels valve plug.

4. as claimed in claim 2 have a gas flow control valve that automatically replies, and it is characterized in that between this upper supporting piece and this magnet fixed block bearing is set, this lower support element and this magnet fixed block are provided with another bearing.

5. as claimed in claim 2 have a gas flow control valve that automatically replies, and it is characterized in that this elastic component is a pressure spring or extension spring, and this two bearing all is respectively a ball bearing or thrust bearing.

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