CN-224216176-U - Connection structure of solenoid valve and thermocouple

Abstract

The embodiment of the utility model discloses a connection structure of an electromagnetic valve and a thermocouple, which comprises the thermocouple and the electromagnetic valve. The thermocouple comprises a heat sensitive probe and a plug connector, wherein the heat sensitive probe is connected with the plug connector through a wire, a protective sleeve is arranged on the plug connector, a valve body of the electromagnetic valve comprises a guide sleeve and a contact pin, the contact pin is in plug fit with the plug connector, the protective sleeve is axially divided into a first section, a second section and a third section in sequence, the first section wraps a part of the wire, the second section wraps a connecting part of the plug connector and the wire, and the third section is provided with an opening for being plugged with the guide sleeve and wrapping the guide sleeve. The utility model provides a connecting structure of an electromagnetic valve and a thermocouple, which is used for improving the sealing performance, oxidation resistance and overall reliability of the connecting part under complex working conditions and prolonging the service life of the device.

Inventors

• XIANG WEIFENG
• GE HUAJUN

Assignees

• 宁波宝林安全科技有限公司

Dates

Publication Date

20260508

Application Date

20250617

Claims (10)

1. 1. A connection structure of an electromagnetic valve and a thermocouple comprises the thermocouple and the electromagnetic valve, and is characterized in that, The thermocouple comprises a thermosensitive probe and a plug connector, wherein the thermosensitive probe is connected with the plug connector through a wire, and a protective sleeve is arranged on the plug connector; The electromagnetic valve body comprises a guide sleeve and a contact pin, the contact pin is in plug-in fit with the plug connector, Wherein the protective sleeve is axially and sequentially divided into a first section, a second section and a third section, The first section wraps a part of the wire, the second section wraps a connecting part of the plug connector and the wire, and the third section is provided with an opening for plugging with the guide sleeve and wrapping the guide sleeve.
2. 2. The connection structure of the electromagnetic valve and the thermocouple of claim 1, wherein the protective sleeve is made of hard rubber or soft rubber.
3. 3. The connection structure of a solenoid valve and a thermocouple as set forth in claim 1, wherein the protective sleeve comprises a rigid skeleton and a flexible coating layer coated on the surface of the skeleton.
4. 4. The connecting structure of the electromagnetic valve and the thermocouple according to claim 1, wherein a chamfer is arranged at the opening of the third section of the protective sleeve and used for guiding the guide sleeve to be inserted.
5. 5. The connection structure of a solenoid valve and a thermocouple as set forth in claim 4, wherein the inner wall of the third section of the protective sleeve is inwardly protruded to form a plurality of rings of reduced diameter portions for enhancing locking engagement with the guide sleeve.
6. 6. The connection structure of a solenoid valve and a thermocouple as set forth in claim 1, wherein said heat sensitive probe is connected to a ground wire.
7. 7. The connection structure of a solenoid valve and a thermocouple as set forth in claim 1, wherein the solenoid valve comprises a valve housing, a valve seat, a valve shaft and a support, the valve shaft is elastically mounted at the head of the valve housing, the valve seat is fixedly mounted at the tail of the valve housing, the support is fixedly mounted on the valve seat, and the guide sleeve is arranged at the tail of the valve seat.
8. 8. The connection structure of a solenoid valve and a thermocouple as set forth in claim 7, wherein the valve shaft is connected with a movable iron core, the valve seat is provided with a stationary iron core, and the stationary iron core and the movable iron core are both located in the valve housing.
9. 9. The connection structure of a solenoid valve and a thermocouple as set forth in claim 8, wherein said valve shaft is externally provided with a spring having a spring tendency to maintain the movable core in a disconnected state from the stationary core.
10. 10. A connection structure of a solenoid valve and a thermocouple as set forth in any one of claims 1 to 9, wherein the radii of the first, second and third sections of the protective sleeve increase in order in the axial direction.

Description

Connection structure of solenoid valve and thermocouple Technical Field The utility model relates to the technical field of gas appliances, in particular to a connecting structure of an electromagnetic valve and a thermocouple. Background In a burner device, in order to realize a safety cut-off function after flame extinction, a thermocouple and an electromagnetic valve are generally used for controlling in a cooperative manner. The thermoelectric couple is installed in the heating area of the burner flame, and when the flame burns, the thermoelectric power drives the electromagnetic valve to be in open state, once the flame is extinguished, the thermoelectric power decays rapidly, the electromagnetic valve is automatically closed immediately, thus cutting off the air source and playing a role of safety protection. In the combustion use process, the internal environment of the stove is always in a high-temperature or cold-heat alternating state, especially the position of the thermocouple and the electromagnetic valve can be influenced by continuous heat radiation or heat conduction during long-time operation. Because the high-temperature environment is severe, the thermocouple plug connector part is easy to oxidize, and the conductivity and the structural stability of the thermocouple plug connector part are further affected. In the existing structure, the thermocouple and the electromagnetic valve are usually in electric connection through plug-in fit, the plug-in part is exposed in the external environment, an effective protection structure is lacked, corrosion of complex working conditions such as high temperature, lampblack and the like is difficult to resist, and therefore the service life and reliability of the connection structure are reduced. Disclosure of Invention Aiming at the problems that in the prior art, a kitchen range is easy to be in complex environments such as high temperature, oil smoke and the like in the combustion use process, so that the connection part of a thermocouple and an electromagnetic valve is exposed, and a connector is easy to oxidize and the like, the utility model aims to provide a connection structure of the electromagnetic valve and the thermocouple, so that the sealing property and the oxidation resistance of the connection part under complex working conditions are improved, and the service life of the device is prolonged. The technical scheme adopted by the utility model is that a connecting structure of an electromagnetic valve and a thermocouple is provided, and the connecting structure comprises the thermocouple and the electromagnetic valve. The thermocouple comprises a heat sensitive probe and a plug connector, wherein the heat sensitive probe is connected with the plug connector through a wire, a protective sleeve is arranged on the plug connector, a valve body of the electromagnetic valve comprises a guide sleeve and a contact pin, the contact pin is in plug fit with the plug connector, the protective sleeve is axially divided into a first section, a second section and a third section in sequence, the first section wraps a part of the wire, the second section wraps a connecting part of the plug connector and the wire, and the third section is provided with an opening for being plugged with the guide sleeve and wrapping the guide sleeve. Compared with the prior art, the utility model carries out partition cladding on the connection area between the thermocouple and the electromagnetic valve by arranging the sectional protective sleeve, the first section protects the lead from being pulled or damaged by the outside, the second section enhances the stability and oxidation resistance of the connection part between the plug connector and the lead, the third section forms an effective barrier by plugging and sealing with the guide sleeve of the electromagnetic valve, and heat, oil smoke, water vapor and the like are prevented from invading the connection area, thereby obviously improving the reliability and durability of the integral structure under the high-temperature complex environment, and further effectively solving the technical problems of unstable connection, easy oxidation failure and the like in the background technology. According to one embodiment of the present utility model, the protective sleeve is made of hard rubber or soft rubber. The soft rubber material has good flexibility and shock resistance, can effectively buffer vibration and impact between the thermocouple and the electromagnetic valve, is suitable for a scene with severe change of the running environment, and has higher structural strength and deformation resistance, thereby being suitable for structural application needing support and fixation. According to one embodiment of the utility model, the protective sleeve comprises a hard framework and a flexible coating layer coated on the surface of the framework. The structure combines the high strength and high supporting performance of