Gas appliance with flame failure protection

Abstract

The application discloses a gas appliance with a flameout protection function and belongs to the gas appliance field. The gas appliance with the flameout protection function comprises a burner head assembly and an electromagnetic valve. One end of the electromagnetic valve is connected with an external gas pipeline, and the other end is connected with the burner head assembly. The burner head assembly comprises annularly arranged first injection holes and second injection holes. The first injection holes are located inside the second injection holes. The interval between two adjacent first injection holes is greater than the interval between two adjacent second injection holes. A thermocouple sensing needle is fixedly installed on the burner head assembly. The thermocouple sensing needle is located above the second injection holes. The thermocouple sensing needle is coupled with the electromagnetic valve. The thermocouple sensing needle is installed above the more dense second injection holes. Even if the thermocouple sensing needle is offset during the transportation of the gas appliance, the thermocouple sensing needle can generate a thermoelectric effect when the gas appliance is ignited, so that the electromagnetic valve can be opened and ignition can be smoothly performed.

Description

Technical Field

[0001] This application relates to the field of gas appliances, and more specifically, to a gas appliance with flameout protection function. Background Technology

[0002] Existing flameout protection devices for gas appliances mainly consist of a solenoid valve and a thermocouple. When igniting, pressing the solenoid valve button allows gas to flow into the burner head. Once the burner head is filled with gas, the ignited gas is ejected from a small hole at the top of the burner head and burns the thermocouple's sensing needle. The sensing needle generates a thermoelectric effect, keeping the electromagnet valve inside the solenoid valve open. When the flame at the burner head is accidentally blown out by wind or extinguished by boiling water, the flame no longer burns the thermocouple's sensing needle and no longer generates a thermoelectric effect. The electromagnet at the solenoid valve loses its magnetism because the coil is not energized and cannot attract the iron core valve to remain open. The valve then returns to the closed state under the action of the spring force.

[0003] In existing gas appliances, thermocouples are typically located on the inner ring of the burner head. The inner ring has a limited number of burner holes, and ignition can only occur when the thermocouple is aligned with a specific burner hole. If the thermocouple is misaligned during installation or shifted during transportation or use, ignition may fail. Figure 1 As shown.

[0004] A search revealed that Chinese patent CN217763551U discloses a dual-ring anti-dry-burning combustion system. This device employs a Y-shaped design for the nozzle seat's ignition channel, allowing a circular protrusion to be positioned at the center of the nozzle seat. This protrusion enables the temperature control probe to be installed at the center of the protrusion, and through connection to a control system, the burner achieves anti-dry-burning functionality. However, this device also suffers from similar problems. To address the issue of thermocouple installation location preventing successful ignition of gas appliances, we propose a gas appliance with flameout protection. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] The purpose of this application is to provide a gas appliance with flameout protection function to solve the problems mentioned in the background art.

[0007] 2. Technical Solution

[0008] This application is achieved through the following technical solution:

[0009] A gas appliance with flameout protection function includes a burner assembly and a solenoid valve. One end of the solenoid valve is connected to an external gas pipeline, and the other end is connected to the burner assembly. The burner assembly includes a first injection hole and a second injection hole arranged in a ring. The first injection hole is located inside the second injection hole, and the distance between two adjacent first injection holes is greater than the distance between two adjacent second injection holes. A thermocouple sensing needle is fixedly installed on the burner assembly. The thermocouple sensing needle is located above the second injection hole and is coupled to the solenoid valve.

[0010] As an optional solution to the technical solution in this application, the furnace head assembly includes an ejector tube, and the thermocouple induction needle is fixedly mounted on the ejector tube by a ring clamp.

[0011] As an optional solution to the technical solution in this application, a fixing member is fixedly connected to the burner assembly, the fixing member is integrally formed with the burner assembly, and the thermocouple sensing needle is fixedly installed on the fixing member.

[0012] As an optional solution to the technical solution of this application, the fixing member has a mounting hole in the middle, and the thermocouple sensing needle is fixedly installed in the mounting hole.

[0013] As an optional solution to the technical solution in this application, a connecting plate is welded onto the furnace head assembly, and the thermocouple induction needle is fixedly installed on the connecting plate.

[0014] As an optional solution to the technical solution of this application, the burner assembly includes a first gas outlet ring and a second gas outlet ring, the first gas outlet ring is located inside the second gas outlet ring, the first injection hole and the second injection hole are both opened on the first gas outlet ring, and the thermocouple sensing needle is fixedly installed between the first gas outlet ring and the second gas outlet ring.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the beneficial effects of this application are:

[0017] 1) By installing the thermocouple sensing needle above the more densely packed second injection holes, even if the thermocouple sensing needle is displaced during the transportation of the gas appliance, the thermocouple sensing needle can still generate a thermoelectric effect when the gas appliance is ignited, so that the solenoid valve can be opened and ignition can be carried out smoothly.

[0018] 2) This application uses ring clamps, fasteners or connecting plates to install thermocouple induction needles onto the burner assembly, avoiding the need to drill holes in the burner assembly as required by traditional installation methods. This effectively simplifies the installation process and increases the safety of gas appliances. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the overall structure of a gas appliance in the prior art;

[0020] Figure 2 A top view of the thermocouple induction needle mounting structure of a gas appliance with flameout protection function;

[0021] Figure 3 A bottom view of the thermocouple induction needle mounting structure of a gas appliance with flameout protection function;

[0022] Figure 4 A top view of the thermocouple induction needle mounting structure of a gas appliance with flameout protection function;

[0023] Figure 5 A bottom view of the thermocouple induction needle mounting structure of a gas appliance with flameout protection function;

[0024] In the figure: 1. Burner head assembly; 101. First injection hole; 102. Second injection hole; 103. Injector tube; 104. First exhaust ring; 105. Second exhaust ring; 2. Thermocouple induction needle; 3. Solenoid valve; 4. Fixture; 401. Mounting hole; 5. Connecting plate. Detailed Implementation

[0025] The technical solution of this application will now be clearly and completely described in conjunction with the accompanying drawings.

[0026] Please see Figure 2 This application provides a technical solution:

[0027] A gas appliance with flameout protection function includes a burner assembly 1 and a solenoid valve 3. One end of the solenoid valve 3 is connected to an external gas pipeline, and the other end is connected to the burner assembly 1. The burner assembly 1 includes a first injection hole 101 and a second injection hole 102 arranged in a ring. The first injection hole 101 is located inside the second injection hole 102. The distance between two adjacent first injection holes 101 is greater than the distance between two adjacent second injection holes 102. A thermocouple sensing needle 2 is fixedly installed on the burner assembly 1. The thermocouple sensing needle 2 is located above the second injection hole 102 and is coupled to the solenoid valve 3.

[0028] By installing the thermocouple sensing needle 2 at the more densely packed second injection holes 102, the adverse effects of the thermocouple sensing needle 2 positional deviation on the successful ignition of the gas appliance can be reduced, increasing the probability of successful ignition of the gas appliance on the first attempt. When the gas appliance is abnormally extinguished, the temperature of the thermocouple sensing needle 2 decreases, and the thermocouple sensing needle 2 feeds back the signal of the temperature decrease to the solenoid valve 3. The solenoid valve 3 closes, preventing the gas in the external gas pipeline from entering the burner assembly 1, thereby avoiding gas leakage.

[0029] Preferably, the burner assembly 1 includes a first exhaust ring 104 and a second exhaust ring 105. The first exhaust ring 104 is located inside the second exhaust ring 105. The first injection hole 101 and the second injection hole 102 are both opened on the first exhaust ring 104. Thermocouple sensing needle 2 is fixedly installed between the first exhaust ring 104 and the second exhaust ring 105.

[0030] To avoid damage to the burner assembly 1 and ensure the safety of the gas appliance, the thermocouple sensing needle 2 can be installed in the following manner:

[0031] Installation method 1: The furnace head assembly 1 includes an ejector tube 103, and the thermocouple sensing needle 2 is fixedly installed on the ejector tube 103 by a ring clamp.

[0032] Installation Method Two: A fixing component 4 is fixedly connected to the burner head assembly 1. The fixing component 4 is integrally formed with the burner head assembly 1, and the thermocouple sensing needle 2 is fixedly installed on the fixing component 4. Preferably, the fixing component 4 has a mounting hole 401 in the middle, and the thermocouple sensing needle 2 is fixedly installed in the mounting hole 401. Figure 2 and Figure 3 As shown.

[0033] Installation Method 3: A connecting plate 5 is welded onto the burner head assembly 1, and the thermocouple induction needle 2 is fixedly installed on the connecting plate 5. Figure 4 and Figure 5 As shown.

Claims

1. A gas appliance with flameout protection function, characterized in that: The device includes a burner assembly (1) and a solenoid valve (3). One end of the solenoid valve (3) is connected to an external gas pipeline, and the other end is connected to the burner assembly (1). The burner assembly (1) includes a first injection hole (101) and a second injection hole (102) arranged in a ring. The first injection hole (101) is located inside the second injection hole (102). The distance between two adjacent first injection holes (101) is greater than the distance between two adjacent second injection holes (102). A thermocouple sensing needle (2) is fixedly installed on the burner assembly (1). The thermocouple sensing needle (2) is located above the second injection hole (102). The thermocouple sensing needle (2) is coupled to the solenoid valve (3).

2. A gas appliance with flameout protection function according to claim 1, characterized in that: The furnace head assembly (1) includes an ejector tube (103), and the thermocouple sensing needle (2) is fixedly installed on the ejector tube (103) by a ring clamp.

3. A gas appliance with flameout protection function according to claim 1, characterized in that: A fixing member (4) is fixedly connected to the burner assembly (1). The fixing member (4) is integrally formed with the burner assembly (1). The thermocouple sensing needle (2) is fixedly installed on the fixing member (4).

4. A gas appliance with flameout protection function according to claim 3, characterized in that: The fixing member (4) has a mounting hole (401) in the middle, and the thermocouple sensing needle (2) is fixedly installed in the mounting hole (401).

5. A gas appliance with flameout protection function according to claim 2, characterized in that: A connecting plate (5) is welded onto the burner assembly (1), and the thermocouple induction needle (2) is fixedly installed on the connecting plate (5).

6. A gas appliance with flameout protection function according to claim 1, characterized in that: The burner assembly (1) includes a first exhaust ring (104) and a second exhaust ring (105). The first exhaust ring (104) is located inside the second exhaust ring (105). The first injection hole (101) and the second injection hole (102) are both opened on the first exhaust ring (104). The thermocouple sensing needle (2) is fixedly installed between the first exhaust ring (104) and the second exhaust ring (105).

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