Gas controller test circuit and tester

Abstract

The utility model discloses a fuel gas controller test circuit and tester, comprising a first test circuit and a second test circuit, the first test circuit and the second test circuit are respectively connected with a fuel gas controller, and the first test circuit is connected with an external power supply; the first test circuit comprises a main power switch, a power output port, a working switch, a time relay, a counter, a double-group relay and a switching mode switch; when the first contact of the switching mode switch is closed, the double-group relay does not work and is communicated with the power supply output port through the working switch; according to the fuel gas controller test circuit and the tester, the mode switching switch is used for switching a test mode and an aging mode, the test circuit integrates quality test and aging functions, detection personnel do not need to switch back and forth among a plurality of test systems, and the test efficiency is improved. And the detection efficiency is obviously improved.

Description

Technical Field

[0001] This utility model belongs to the field of gas valve technology, specifically relating to a gas controller test circuit and tester. Background Technology

[0002] In the field of gas stoves and related safety controls, the combustion controller, as a core safety component, directly affects user safety through its stability and reliability. With the continuous expansion of the gas stove market and increasing consumer demands for product safety, efficiently and accurately testing the performance of flameout protection controllers has become a crucial challenge for both manufacturers and service providers. Traditionally, combustion controller testing has relied heavily on stationary testing equipment. While these devices are comprehensive in function, they are bulky, complex to operate, and difficult to adapt to the needs of field repairs. For production lines, stationary testing equipment limits flexibility and efficiency; for service providers, carrying cumbersome testing equipment during field repairs not only increases costs but also reduces repair efficiency.

[0003] With the continuous advancement of technology, the types and specifications of combustion controllers are increasing, and traditional testing methods can no longer meet the needs of rapid and diverse testing. Therefore, developing a small, portable, easy-to-operate, and quickly connected flameout protection controller testing instrument is of great significance for improving production efficiency, reducing maintenance costs, and ensuring user safety. Utility Model Content

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] In a first aspect, a gas controller test circuit includes a first test circuit and a second test circuit, wherein the first test circuit and the second test circuit are respectively connected to the gas controller, and the first test circuit is connected to an external power source.

[0006] The first test circuit includes a main power switch, a power output port, a working switch, a time relay, a counter, two sets of relays, and a mode switching switch; the main power switch is connected to an external power source and controls the connection to and from the external power source; the power output port is connected to the power line of the gas meter controller, and the working switch controls the connection to and from the power output port.

[0007] The output terminal of the main power switch is connected to a time relay, a counter, two sets of relays, and a mode switching switch. The mode switching switch has a first contact and a second contact. At any given time, only one contact is in a connected state. When the first contact of the mode switching switch is closed, the two sets of relays are not working and are connected to the power output port through the working switch. When the second contact of the mode switching switch is closed, the time relay, the counter, and the two sets of relays are connected.

[0008] The second test circuit includes an ignition line port, a flame detection line port, a ground line port, a water level line port, a flame switch, and a water level switch; the flame switch is connected in series with the flame detection line port, the water level switch is connected in series with the water level line port, and the ignition line port, flame detection line port, ground line port, and water level line port are connected in parallel.

[0009] As a further embodiment of this utility model: the flame switch is connected in parallel with two simulated flame circuits, each simulated flame circuit including a connected resistor and a diode, and the resistance values ​​of the two simulated flame circuits are different.

[0010] As a further embodiment of this utility model: the water level switch is connected in parallel with two resistors of different resistance values.

[0011] As a further embodiment of this utility model: the first test circuit includes a fuse and a power indicator light, the input terminal of the main power switch is provided with a fuse, and the output terminal of the main power switch is provided with a power indicator light.

[0012] As a further embodiment of this utility model, it also includes a fan module, which includes a fan port and a fan indicator light. The fan indicator light and the fan port are electrically connected, and the fan port is connected to the pin of the gas meter controller.

[0013] As a further embodiment of this utility model, it also includes a wind pressure switch module and an over-temperature switch module. The wind pressure switch module includes a wind pressure switch and a wind pressure port, and the over-temperature switch module includes an over-temperature switch and an over-temperature port. The wind pressure switch and the wind pressure port are connected, and the over-temperature switch and the over-temperature port are connected. The wind pressure port and the over-temperature port are respectively connected to different pins of the gas meter controller.

[0014] As a further embodiment of this utility model, it also includes a voltmeter module, which includes a ignition valve voltmeter, a first solenoid valve, an ignition valve port, a main gas valve voltmeter, a second solenoid valve, and a main gas valve port. The ignition valve voltmeter, the first solenoid valve, and the ignition valve port are electrically connected, and the main gas valve voltmeter, the second solenoid valve, and the main gas valve port are electrically connected. The ignition valve port and the main gas valve port are respectively connected to different pins of the gas meter controller.

[0015] As a further embodiment of this utility model, it also includes a display module, which includes a display connector and a display screen, and the display screen is connected to the combustion controller through the display connector.

[0016] In a second aspect, a tester includes a housing, components, wires, and a gas controller test circuit as described in any one of the above, wherein the components and the wires are connected according to the gas controller test circuit, the components are embedded in the surface of the housing, and the wires are placed inside the housing.

[0017] As a further embodiment of this utility model: the components include spring-loaded quick-connect terminals and double-row connectors; the main power switch is connected to the external power source using spring-loaded quick-connect terminals; the fan port uses spring-loaded quick-connect terminals; and the ignition wire port, flame detection wire port, ground wire port, and water level wire port use double-row connectors.

[0018] The beneficial effects of this utility model are:

[0019] A gas controller test circuit and tester are disclosed. A mode switch is used to switch between test mode and aging mode. Test mode tests the quality of the gas controller and verifies the continuity of various signals. Aging mode involves the gas controller continuously cycling through the on / off contacts of two sets of relays to age its components and performance. This test circuit provides various input signals to the gas controller and receives its output signals. This integrated test circuit combines quality testing and aging functions, eliminating the need for testing personnel to switch between multiple test systems and reducing repetitive wiring. A single, streamlined test procedure allows for the acquisition of gas controller quality parameters and aging data, significantly improving testing efficiency and enabling faster market entry for gas controllers or quick repair of defective controllers. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a gas controller test circuit. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of a gas controller test circuit. Figure 2 ;

[0022] Figure 3 This is a circuit diagram of the first test circuit of a gas controller test circuit;

[0023] Figure 4 This is a circuit diagram of the second test circuit of a gas controller test circuit;

[0024] Figure 5 This is a circuit diagram of a fan module for a gas controller test circuit;

[0025] Figure 6 This is a circuit diagram of a wind pressure switch module for a gas controller test circuit;

[0026] Figure 7 This is a circuit diagram of an over-temperature switch module for a gas controller test circuit;

[0027] Figure 8 This is a circuit diagram of a voltmeter module in a gas controller test circuit.

[0028] Figure 9 This is a circuit diagram of a voltmeter module in a gas controller test circuit.

[0029] Figure 10 This is a circuit diagram of a display module for a gas controller test circuit;

[0030] Figure 11 This is a schematic diagram of the structure of a testing instrument.

[0031] The diagram shows: 1-Display screen, 2-Timer, 3-Counter, 4-Fuse, 5-Main power switch, 6-Mode switch, 7-Power output port, 8-Fan input port, 9-Fan port, Over-temperature port, Ignition valve port, Main gas valve port, 10-Working switch, 11-Ignition wire port, Ignition wire port, Flame detection wire port, Ground wire port, Water level wire port, 12-Fan indicator light, 13-Power indicator light, 14-Main gas valve voltmeter, 15-Ignition valve voltmeter, 16-Air pressure switch, Over-temperature switch, Water level switch, Flame switch. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. It should be understood that this application is not limited to the exemplary embodiments disclosed herein. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0033] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0034] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] The combustion controller is a circuit board with multiple pins and power lines. The power lines are connected to a 220V power supply, and the pins are connected to the ignition wire, ground wire, water level wire, fan wire, ignition valve wire, gas valve wire, temperature control wire, water level wire, air pressure wire, etc.

[0037] Example 1

[0038] A gas controller test circuit is provided, which includes two modules: quality detection and aging detection, for testing the quality of the combustion controller and aging the components and performance of the combustion controller.

[0039] like Figure 1 , 3 As shown in Figure 4, the system includes a first test circuit and a second test circuit. The first test circuit and the second test circuit are respectively connected to the gas controller. The first test circuit is connected to an external power supply AC. The first test circuit includes a main power switch SB1, a power output port KM1, a working switch SB2, a time relay KT, a counter C, a dual-group relay K, and a mode switching switch SA1. The main power switch SB1 is connected to the external power supply AC and controls the connection and disconnection of the external power supply AC. The power output port KM1 is connected to the power line of the gas controller, and the working switch SB1 controls the connection and disconnection of the power output port KM1.

[0040] The output terminal of the main power switch is connected to the time relay KT, the counter C, the dual-group relay K, and the mode switching switch SA1. The mode switching switch SA1 has a first contact QA1 and a second contact QA2. At any given time, only one contact is in the connected state. When the first contact QA1 of the mode switching switch SA1 is closed, the dual-group relay K does not work and is connected to the ports KM1 and KS1 through the working switch SB2 to provide test power. When the second contact QA2 of the mode switching switch SA1 is closed, the time relay KT, the counter C, and the dual-group relay K are connected.

[0041] The second test circuit includes an ignition line port J1, a flame detection line port J2, a ground line port J3, a water level line port J4, a flame switch SA2, and a water level switch SA3. The flame switch SA2 is connected in series with the flame detection line port J2, the water level switch SA3 is connected in series with the water level line port J4, and the ignition line port J1, the flame detection line port J2, the ground line port J3, and the water level line port J4 are connected in parallel.

[0042] Specifically, the mode switching switch SA1 is used to switch between test mode and aging mode. Test mode tests the quality of the gas controller and verifies the continuity of each signal. Aging mode involves continuously cycling the gas controller's operation by setting the on / off contact time of the dual relays K, thus aging the components and performance of the gas controller. The specific working principle is as follows:

[0043] When the QA2 contact is closed, it is in aging mode, that is, the two sets of relays K are working and energized, the normally open contacts of the two sets of relays K are closed, and the normally closed contacts are open. The voltage of ports KM1 and KS1 is the power supply N. The output is controlled by the time relay KT to work in a cycle of on and off.

[0044] When the QA2 contact is disconnected, it is in test mode, meaning the dual relay K is not working, the normally open contact of the dual relay K is open, and the normally closed contact is closed. The voltage of ports KM1 and KS1, i.e. the power supply N, is provided by the normally closed contact of the dual relay K. Through the working switch SB2, it connects ports KM1 and KS1 to provide test power AC.

[0045] This test circuit provides various input signals to the combustion controller and receives its output signals. Integrating quality testing and aging functions, this circuit eliminates the need for testing personnel to switch between multiple testing systems, reducing repetitive wiring work. A single, streamlined testing process allows for the acquisition of combustion controller quality parameters and aging data, significantly improving testing efficiency and enabling faster market entry for combustion controllers or quick repair of defective ones.

[0046] The specific testing methods are as follows:

[0047] S1: Connect the ignition wire port J1, flame detection wire port J2, ground wire port J3, and water level wire port J4 to the combustion controller. Connect the power output port KM1 to the power supply of the gas meter controller. Connect the first test circuit to AC220V power supply.

[0048] S2: Close the main power switch SB1;

[0049] S3: If quality inspection is selected, the first contact QA1 of the mode switching switch SA1 will close;

[0050] S31: Close the working switch SB2 to establish a connection between the combustion controller and the test circuit;

[0051] S32: After connection, if the test circuit is abnormal, the circuit will alarm; switch flame switch SA2, and when flame switch SA2 is in the no-flame state, the circuit will alarm; switch water level switch SA3, and when water level switch SA3 is in the no-water state, the circuit will alarm.

[0052] S4: If aging detection is selected, the second contact QA2 of the mode switching switch SA1 will close;

[0053] S41: Close the working switch SB2 to connect the combustion controller and the test circuit. The cyclic ignition combustion controller reads the test time and number of ignitions on the counter C and the time relay KT.

[0054] Among them, counter C is a trigger counter. By connecting the output of counter C to the flip-flop, the state of the flip-flop is changed by the change of the value of counter C, thereby controlling the opening and closing of the test circuit.

[0055] In this embodiment, as Figure 4 As shown, flame switch SA2 is connected in parallel with a simulated flame circuit. There are two simulated flame circuits connected in parallel with flame switch SA2. Each simulated flame circuit includes connected resistors R1 and R2 and diodes D1 and D2. The resistance values ​​of the two simulated flame circuits R1 and R2 are different. Water level switch SA3 is connected in parallel with two resistors R3 and R4 with different resistance values.

[0056] Specifically, regarding detection accuracy, the working state of the combustion controller under different flame and water level conditions is simulated by setting resistors with different resistance values. Switches are provided to toggle between flame and no flame, or between water and no water. When the no-water or no-flame switch is activated, the test circuit alarms.

[0057] In this embodiment, as Figure 1 As shown, the first test circuit includes a fuse FU and a power indicator light HL1. The input terminal of the main power switch SB1 is equipped with a fuse FU, and the output terminal of the main power switch SB1 is equipped with a power indicator light HL1.

[0058] Specifically, the fuse FU protects electrical equipment and test circuits. When the main power switch SB1 is closed, the power indicator light HL1 illuminates, serving as an operational reminder.

[0059] In this embodiment, as Figure 2 and 5 As shown, it also includes a fan module, which includes a fan port KM2 and a fan indicator light HL2. The fan indicator light HL2 and the fan port KM2 are electrically connected, and the fan port KM2 is connected to the pin of the gas meter controller.

[0060] Specifically, this test circuit also checks whether the signal transmission of the combustion controller and the fan is qualified. The fan indicator light HL2 indicates the operating status of the simulated fan. When the gas controller is turned on, it sends a fan operating signal, and the fan indicator light HL2 illuminates.

[0061] In this embodiment, as Figure 2 , 6 As shown in Figure 7, it also includes a wind pressure switch module and an over-temperature switch module. The wind pressure switch module includes a wind pressure switch SA4 and a wind pressure port KM3. The over-temperature switch module includes an over-temperature switch SA5 and an over-temperature port KM4. The wind pressure switch SA4 and the wind pressure port KM3 are connected. The over-temperature switch SA5 and the over-temperature port KM4 are connected. The wind pressure port KM3 and the over-temperature port KM4 are respectively connected to different pins of the gas meter controller.

[0062] Specifically, this test circuit also checks whether the combustion controller and the transmission of over-temperature or air pressure signals are qualified. A switch setting simulates the closed and open working states of the air pressure switch. Separate switch buttons are provided to toggle between normal and fault states to test whether the circuit is working properly.

[0063] In this embodiment, as Figure 2 , 8 As shown in Figure 9, it also includes a voltmeter module, which includes a ignition valve voltmeter V1, a first solenoid valve YV1, an ignition valve port KM5, a main gas valve voltmeter V2, a second solenoid valve YV2, and a main gas valve port KM6. The ignition valve voltmeter V1, the first solenoid valve YV1, and the ignition valve port KM5 are electrically connected, and the main gas valve voltmeter V2, the second solenoid valve YV2, and the main gas valve port KM6 are electrically connected. The ignition valve port KM5 and the main gas valve port KM6 are respectively connected to different pins of the gas meter controller.

[0064] Specifically, this test circuit also checks whether the signal transmission between the combustion controller and the ignition valve or the gas valve is qualified. The combustion controller is connected to the ignition valve and the gas valve via a solenoid valve, and its operating status is detected by the corresponding voltmeter.

[0065] In this embodiment, as Figure 10As shown, it also includes a display module, which includes a display connector KS2 and a display screen, and the display screen is connected to the combustion controller through the display connector KS2.

[0066] Specifically, the display screen is connected to the combustion controller via the display connector KS2, and the display module displays the quality test time, fan start status, fault status, etc.

[0067] Example 2

[0068] A tester includes a housing, components, wires, and a gas controller test circuit of any one of the above. The components and wires are connected according to the gas controller test circuit. The components are embedded on the surface of the housing, and the wires are placed inside the housing.

[0069] Since a gas controller test circuit has the aforementioned beneficial effects, a tester that includes the gas controller test circuit also has the corresponding effects, which will not be elaborated here.

[0070] The components include spring-loaded quick-connect terminals and double-row connectors. The main power switch and the power output port 7 of the external power supply are connected by spring-loaded quick-connect terminals. The fan port 9 is connected by spring-loaded quick-connect terminals. The ignition wire port, flame detection wire port, ground wire port and water level wire port 11 are connected by double-row connectors.

[0071] Specifically, such as Figure 11 As shown, the surface structure of the tester housing, the power cord connection, and the fan connection use spring-loaded quick-connect terminals. When the wire is inserted into the spring-loaded quick-connect terminal, the spring is compressed, and the pressing tab clamps the wire. This applies pressure to the wire, ensuring good electrical contact. The ignition wire, flame detection wire, and ground wire use double-row connectors for quick plugging and unplugging.

[0072] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0073] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A gas controller test circuit, characterized in that, It includes a first test circuit and a second test circuit, which are respectively connected to the gas controller. The first test circuit is connected to an external power source. The first test circuit includes a main power switch, a power output port, a working switch, a time relay, a counter, two sets of relays, and a mode switching switch; the main power switch is connected to an external power source and controls the connection to and from the external power source; the power output port is connected to the power line of the gas meter controller, and the working switch controls the connection to and from the power output port. The output terminal of the main power switch is connected to a time relay, a counter, two sets of relays, and a mode switching switch. The mode switching switch has a first contact and a second contact. At any given time, only one contact is in a connected state. When the first contact of the mode switching switch is closed, the two sets of relays are not working and are connected to the power output port through the working switch. When the second contact of the mode switching switch is closed, the time relay, the counter, and the two sets of relays are connected. The second test circuit includes an ignition line port, a flame detection line port, a ground line port, a water level line port, a flame switch, and a water level switch; the flame switch is connected in series with the flame detection line port, the water level switch is connected in series with the water level line port, and the ignition line port, flame detection line port, ground line port, and water level line port are connected in parallel.

2. The gas controller test circuit according to claim 1, characterized in that, The flame switch is connected in parallel to two simulated flame circuits, each of which includes a connected resistor and a diode, and the two simulated flame circuits have different resistance values.

3. The gas controller test circuit according to claim 1, characterized in that, The water level switch is connected in parallel with two resistors of different resistance values.

4. The gas controller test circuit according to claim 1, characterized in that, The first test circuit includes a fuse and a power indicator light. The input terminal of the main power switch is equipped with a fuse, and the output terminal of the main power switch is equipped with a power indicator light.

5. The gas controller test circuit according to any one of claims 1-4, characterized in that, It also includes a fan module, which includes a fan port and a fan indicator light. The fan indicator light and the fan port are electrically connected, and the fan port is connected to the pin of the gas meter controller.

6. The gas controller test circuit according to any one of claims 1-4, characterized in that, It also includes a wind pressure switch module and an over-temperature switch module. The wind pressure switch module includes a wind pressure switch and a wind pressure port. The over-temperature switch module includes an over-temperature switch and an over-temperature port. The wind pressure switch and the wind pressure port are connected. The over-temperature switch and the over-temperature port are connected. The wind pressure port and the over-temperature port are respectively connected to different pins of the gas meter controller.

7. The gas controller test circuit according to any one of claims 1-4, characterized in that, It also includes a voltmeter module, which includes a ignition valve voltmeter, a first solenoid valve, an ignition valve port, a main gas valve voltmeter, a second solenoid valve, and a main gas valve port. The ignition valve voltmeter, the first solenoid valve, and the ignition valve port are electrically connected. The main gas valve voltmeter, the second solenoid valve, and the main gas valve port are also electrically connected. The ignition valve port and the main gas valve port are respectively connected to different pins of the gas meter controller.

8. The gas controller test circuit according to any one of claims 1-4, characterized in that, It also includes a display module, which includes a display connector and a display screen, the display screen being connected to the combustion controller via the display connector.

9. A testing instrument, characterized in that, The device includes a housing, components, wires, and a gas controller test circuit as described in any one of claims 1-8. The components and wires are connected according to the gas controller test circuit. The components are embedded in the surface of the housing, and the wires are placed inside the housing.

10. A testing instrument, characterized in that, The device includes a housing, components, wires, and a gas controller test circuit as described in any one of claims 5-8. The components and wires are connected according to the gas controller test circuit. The components are embedded on the surface of the housing, and the wires are placed inside the housing. The components include spring-loaded quick-connect terminals and double-row connectors. The main power switch is connected to the external power source using spring-loaded quick-connect terminals. The fan port uses spring-loaded quick-connect terminals. The ignition wire port, flame detection wire port, ground wire port, and water level wire port use double-row connectors.

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