CN2608795Y - Improved thermocouple type electromagnetic valve - Google Patents

Abstract

The utility model discloses an improved generation thermocouple formula solenoid valve device, its characterized in that: at least three terminals which can be electrically connected and a first conductive coil and a second conductive coil are arranged on a terminal board of the electromagnetic valve, and the two conductive coils are respectively wound on two protruding ends of the fixed magnetic conduction piece. One end of the first conductive coil is connected with a terminal for connecting the thermocouple, and the other end of the first conductive coil is connected with the shell. Two ends of the second conductive coil are respectively connected with the other two terminals, the two terminals are connected with different control circuits, and command current is input to the second conductive coil through a preset control circuit, so that the electromagnetic valve acts in a preset mode.

Description

Improved Thermocouple Solenoid Valve

technical field

The utility model relates to an electromagnetic valve for controlling gas appliances, more specifically, relates to a thermocouple type electromagnetic valve with improved structure.

Background technique

As shown in FIG. 1 , a traditional thermocouple solenoid valve 100 is installed at one end of a gas switch of a gas furnace, and it consists of a conductive joint 101 and a valve group 102 . The joint 101 is composed of a housing 103 , a terminal board 104 and a fixed magnetic conductor 105 ; The valve group 102 is arranged at one end of the joint 101 corresponding to the fixed magnetic guide 105, and a movable magnetic guide 106 is arranged inside it, and the movable magnetic guide 106 corresponds to a pressure rod 107 of the gas switch, and the pressure rod 107 is controlled by the pressure of the gas switch. Drive and push the movable magnetic guide 106, and then make the gas valve port of the gas switch be accurately opened or closed. In addition, a conductive coil 108 is wound around the end of the fixed magnetic member 105. One end of the conductive coil 108 is connected to a terminal of the terminal board 104 and electrically connected to a thermocouple 109, and the other end is connected to the housing 103 (ground).

When the user operates the gas stove, he first presses the knob of the gas switch, drives the pressure rod 107 to push the movable magnetic member 106, and then opens the gas valve port, so that the gas can flow to the burner through the gas switch, and then turn the knob. Drive the igniter to ignite the gas to ignite the burner. After that, the user must continue to press the knob for a period of time, so that the thermocouple 109 is heated to a certain high temperature to generate a potential difference. The potential difference can generate a current to excite the conductive coil 108, and then make the The fixed magnetic guide 105 continuously absorbs the movable magnetic guide 106, so that the gas valve port can be continuously opened and the burner can continue to burn.

If the user turns the knob back to the original position or the fire is accidentally extinguished and the combustion stops, the thermocouple 109 will gradually cool down and cause the conductive coil 108 to demagnetize, and the movable magnetic member 106 can be pushed back to the original position by the spring force and closed Gas valve port to prevent gas from continuing to flow out.

Because the thermocouple 109 is heated and generates a current to excite the solenoid valve 100, it usually takes a few seconds. The user often fails to make the fixed magnetic member 105 have enough magnetic force to absorb the movement because the user does not press the knob long enough or accidentally releases it. The magnetically conductive part 106, so that the user must repeatedly activate the gas switch, and only after the heating procedure of the thermocouple 109 is completed, can the fire be ignited smoothly. Such a design is obviously not very practical.

In order to solve the aforementioned shortcomings, as shown in Figure 2, some people in the industry have designed another type of thermocouple solenoid valve 110. The difference between it and the aforementioned solenoid valve 100 is that a conductive coil is additionally provided on the fixed magnetic guide 111. 112 , one end of the conductive coil 112 is connected to a terminal 114 added on the terminal board 113 , and the other end is connected to the casing 115 (grounded). The two terminals 114 and 116 on the terminal board 113 can be respectively connected to an IC igniter or other electronic control device 117 and a thermocouple 118 .

Solenoid valve 110 of this structure is in addition to the safety effect of controlling whether gas can flow out of the gas switch for combustion according to traditional thermocouple solenoid valve 100, because it has added another conductive coil 112 connected with IC igniter or other electronic control devices, So that the solenoid valve 110 of this structure can promote the excitation or demagnetization of the conductive coil 112 through an IC igniter or other electronic control devices, and affect the action of the original conductive coil to prompt the solenoid valve 110 to produce such as rapid excitation, continuous combustion, automatic flameout or super Warm flameout and other effects.

However, since the conductive coil 112 has only one electrical connection terminal for setting the switch control circuit, to control the conductive coil 112 to be controlled by "forward current" or "reverse current", a current-guiding control circuit must be added, so that It is bound to increase the component cost. Furthermore, based on the requirement of excellence, there is still room for improvement in the flexibility of the combustion control action.

Contents of the invention

In view of the above reasons, the purpose of this utility model is to provide a thermocouple solenoid valve device with improved structure, which can greatly increase the flexibility and function of the gas stove in controlling the combustion action through a small change in its structure.

In order to achieve the above object, the utility model adopts the following design scheme: an improved thermocouple solenoid valve, which is composed of a solenoid valve and a thermocouple; the solenoid valve is composed of a joint and a valve group; the joint has a housing, A terminal board and a fixed magnetic guide; the terminal board is arranged at one end of the housing, and the fixed magnetic guide is arranged at the other end of the housing; the valve group is arranged at the corresponding fixed magnetic guide in the joint one end; characterized in that:

Two protruding ends are provided on the fixed magnetic conducting part, and a first conductive coil and a second conductive coil are respectively wound on the two protruding ends; one end of the first conductive coil is electrically connected with a thermocouple; the second The two ends of the conductive coil can be connected to different control circuits, so that a predetermined control circuit can input command current to the second conductive coil, and then the solenoid valve can be operated in a predetermined manner.

The terminal board is provided with at least three terminals for electrical connection; one end of the first conductive coil is connected to one terminal; two ends of the second conductive coil are respectively connected to the other two terminals, so that the two Terminals are available for connection to different control circuits.

The second conductive coil is wound on the root of one protruding end of the fixed magnetic conducting member, and the first conductive coil is wound on the end of the protruding end and the other protruding end.

The first conductive coil is not in contact with the second conductive coil.

The other end of the first conductive coil is connected to the housing for grounding.

A sleeve is arranged on the terminal board, and each terminal is located in the sleeve.

Another terminal is additionally provided on the terminal board, and one end of the first conductive coil is connected to the terminal for grounding.

The two terminals electrically connected to the second conductive coil are respectively connected to a first control circuit and a second control circuit, the first control circuit is a strong suction IC igniter, and the second control circuit is a strong discharge IC igniter. IC igniter.

The two terminals electrically connected to the second conductive coil are respectively connected to a first control circuit and a second control circuit, the first control circuit is a strong suction IC igniter, and the second control circuit is a timing control circuit device.

Because the thermocouple type solenoid valve device provided by the utility model utilizes the three terminals provided on the terminal board, and connects one end of the first conductive coil and two ends of the second conductive coil to the three terminals respectively, the solenoid valve can be Connected with the thermocouple and the second control circuit, currents with different polarities can be input from different ends of the second conductive coil, increasing the flexibility and function of the gas stove in controlling the combustion action.

Description of drawings

Fig. 1 is a structural schematic diagram of a conventional thermocouple solenoid valve

Fig. 2 is the structural representation of another kind of conventional thermocouple type electromagnetic valve

Fig. 3 is the structural representation of preferred embodiment of the utility model

Fig. 4 is the control circuit diagram of the preferred embodiment of the utility model

Fig. 5 is the structural representation of another preferred embodiment of the utility model

Detailed ways

Firstly, as shown in FIG. 3 and FIG. 4 , the solenoid valve 10 of the preferred embodiment of the present invention is composed of a joint 12 and a valve group 14 . The connector 12 includes a metal shell 22 , a metal terminal board 24 and a fixed magnetic conductor 26 . The metal terminal plate 24 is arranged at one end of the casing 22 , and the fixed magnetic guide 26 is arranged at the other end of the casing 22 . One end of the fixed magnetic guide 26 is connected to the terminal board 24 , and the other end is provided with two protruding ends 28 , 30 . The valve group 14 is arranged at the end of the joint 12, and a movable magnetic conducting part 32 corresponding to the fixed magnetic conducting part 26 is arranged inside it, and the distance between the two is within the range of the magnetic force. One end of the movable magnetic guide 32 corresponding to the gas switch 31 is provided with a valve plug 33 . The structures of the aforementioned components are the same as those of conventional solenoid valves, and will not be repeated here. The difference between the solenoid valve 10 disclosed in the utility model and the conventional solenoid valve is:

A sleeve 31 is disposed on the terminal board 24 . Three conductive terminals 34 , 36 , 38 are provided on the terminal board 24 inside the sleeve 31 . Also disposed within the joint 12 is a first conductive coil 40 and a second conductive coil 42 . The first conductive coil 40 is wound on the protruding end 28 and the outer end of the other protruding end 30 ; one end thereof is connected to the terminal 34 , and the other end is welded to the housing 22 for grounding. The second conductive coil 42 is wound around the root of the protruding end 30 , and its two ends are respectively connected to the other two terminals 36 , 38 . The first conductive coil 40 is not in contact with the second conductive coil 42 .

The solenoid valve 10 is arranged at one end of the gas switch 50 , and the solenoid valve 10 is provided with a valve plug 33 corresponding to a pressure rod 52 inside the gas switch 50 . The terminal 34 of the utility model can be electrically connected with a thermocouple 54, and the terminals 36 and 38 can be electrically connected with a first control circuit 56 and a second control circuit 58 respectively. The first control circuit 56 can adopt control circuits such as known strong suction IC igniters, and these strong suction IC igniters can provide the function of immediately supplying power and powering off after a set time, while the second control circuit 58 can adopt conventional Known strong discharge IC igniter or timing controller and other control circuits. The first control circuit 56 is not electrically connected with a micro switch arranged beside the knob of the gas switch 50 .

When the user twists the knob of the gas switch 50, the micro switch can be touched at the same time to make the first control circuit 56 act, and then the first control circuit 56 can output a "forward current" to the second conductive coil 42 , so that the second conductive coil 42 excites the fixed magnetic conductor 26 and absorbs the movable magnetic conductor 32, so that the gas valve of the gas switch 50 is opened, and the burner is ignited. When the burner burns for a period of time and the thermocouple 54 is heated to generate a potential difference, the current generated by the potential difference excites the first conductive coil 40 . When the burner burns for about several seconds (not yet reaching the time for the automatic power-off of the first control device 56), the second control circuit 58 can output a "reverse current" to offset the output of the second conductive coil 42 by the first control circuit 56 " Forward current” excitation state, so that the second conductive coil 42 is no longer excited, and the excitation of the fixed magnetic conductive member 26 is replaced by the first conductive coil 40 driven by the thermocouple 54 without power consumption, so that the fixed conductive The magnetic part 26 continues to excite and absorb the movable magnetic conducting part 32 to make the stove fire continue to burn.

If the second control circuit 58 is used as a timing controller, when the first control circuit 56 outputs "forward current" to prompt the second conductive coil 42 to be excited for a period of time and automatically cut off the power, the fixed magnetic conductive part 26 is still under the condition of being controlled. The first conductive coil 40 is excited so that the fire continues to burn, and when the second control circuit 58 reaches the set time, it can output a "reverse current" to the second conductive coil 42, thereby offsetting the first conductive coil The forward magnetic force of 40 demagnetizes the fixed magnetic guide 26, and the fixed magnetic guide 26 no longer absorbs the movable magnetic guide 32, impels the gas valve of the gas switch 50 to close and extinguish the fire.

The two ends of the second conductive coil 42 have no polarity distinction, and the first control circuit 56 and the second control circuit 58 can also be connected to the terminals 38 and 36 respectively, so that the aforementioned control effects can also be achieved.

As can be seen from the above, the utility model is provided with three terminals 34, 36, 38 on the terminal board 24, and the two ends of the second conductive coil 42 are connected to the terminals 36, 38 respectively, so that the first conductive coil 40 is connected to the terminal 34 The way of being connected, makes this electromagnetic valve 10 connect with thermocouple 54 and two control circuits 56, 58, increases the flexibility and the function on the control combustion action of gas stove.

As shown in FIG. 5 , a terminal 60 can also be added on the terminal board 24 , and the terminal 60 is connected to a ground terminal welded between the first conductive coil 40 and the casing 22 . When assembling the gas stove, another ground wire (not shown in the figure) can be used to connect the terminal 60 and the shell of the gas stove.

In summary, the thermocouple solenoid valve device provided by the utility model utilizes three terminals provided on the terminal board, and one end of the first conductive coil and two ends of the second conductive coil are connected to the three terminals respectively. , the solenoid valve can be connected with the thermocouple and the second control circuit, and currents with different polarities can be input from different ends of the second conductive coil, so as to increase the flexibility and function of the gas stove in controlling the combustion action.

Claims (9)

1, a kind of modified model thermojunction type solenoid valve, it is made of solenoid valve and thermocouple; This solenoid valve is made of joint and valve group; Described joint has fixedly magnetic conductive part of a housing, terminal board and; Terminal board is located at an end of housing, and fixedly magnetic conductive part is located at the other end of housing; Described valve group be located at described joint in the corresponding end of fixedly magnetic conductive part; It is characterized in that:

Described fixedly magnetic conductive part is provided with two projection ends, is wound with first conductive coil and second conductive coil respectively on described two projection ends; One end and the thermocouple of first conductive coil are electrically connected; Two ends of second conductive coil can supply to connect different control circuits, and make expectant control circuit input instruction current to the second conductive coil, and then this solenoid valve is moved in a predefined manner.

2, modified model thermojunction type solenoid valve according to claim 1 is characterized in that: described terminal board is provided with three terminals that the gas of can powering at least connects; One end of described first conductive coil is connected with a terminal; The two ends of described second conductive coil link to each other with two other terminal respectively, make this two-terminal can supply to connect different control circuits.

3, modified model thermojunction type solenoid valve according to claim 2, it is characterized in that: described second conductive coil is wrapped in a projection end root of described fixedly magnetic conductive part, and described first conductive coil is wrapped on the end and another projection end of described projection end.

4, modified model thermojunction type solenoid valve according to claim 3, it is characterized in that: described first conductive coil does not contact with second conductive coil.

5, modified model thermojunction type solenoid valve according to claim 2, it is characterized in that: the other end of described first conductive coil links to each other with described housing, as earthy.

6, modified model thermojunction type solenoid valve according to claim 2, it is characterized in that: described terminal board is provided with a sleeve, and described each terminal is positioned at described sleeve.

7, according to claim 2 or 6 described modified model thermojunction type solenoid valves, it is characterized in that: also have additional another terminal on the described terminal board, an end of described first conductive coil links to each other with this terminal, as earthy.

8, modified model thermojunction type solenoid valve according to claim 2, it is characterized in that: described two terminals that are electrically connected with second conductive coil link to each other with a second control circuit with a first control circuit respectively, described first control circuit is the strong IC of suction igniter, and described second control circuit is a forced-ventilated IC igniter.

9, modified model thermojunction type solenoid valve according to claim 2, it is characterized in that: link to each other with a second control circuit with a first control circuit respectively with two terminals that described second conductive coil is electrically connected, described first control circuit is the strong IC of suction igniter, and described second control circuit is a timing controller.

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