JP7137700B2 - gas stove safety device and gas stove - Google Patents

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application takes priority from a Chinese application entitled "Gas Stove Safety Device" with application number CN201910260625.4 filed with the Chinese Patent Office on April 2, 2019. , the entire contents of which are incorporated into this application by reference.
TECHNICAL FIELD The present disclosure relates to the field of gas stove technology, and more particularly to safety devices for gas stoves and gas stoves.

Gas stoves are kitchen appliances that burn gaseous fuels such as liquefied petroleum gas, coal gas, and natural gas for heating, and are often used in daily life and restaurants. Safety issues are often caused by user error or carelessness when in use. For example, if you forget to turn off the flame on the gas stove, the pot will be boiled dry, and eventually a fire will occur, which may threaten the safety of the user's life and property.

Therefore, there is a need for a gas stove safety device that effectively prevents empty heating.

The present disclosure has been made in view of the above circumstances, and an object thereof is to provide a safety device for a gas stove that effectively prevents empty heating during use.
A gas stove safety device according to an embodiment of the present disclosure includes a support component, an outer sleeve, and a temperature sensor assembly,
The support component includes a support component body and a circumferential protrusion connected to the upper end of the support component body,
The outer sleeve includes an outer sleeve main body and a reduced diameter portion that are connected to each other, a sleeve shoulder portion is formed between the outer sleeve main body and the reduced diameter portion, and the circumferential protrusion is formed in the outer sleeve main body. and an elastic part is connected between the circumferential protrusion and the upper end of the outer sleeve body, and the sleeve shoulder prevents the circumferential protrusion from falling off from the outer sleeve body. , the reduced diameter portion is extrapolated to the outside of the support component body,
the temperature sensor assembly is installed in the outer sleeve body and connected with the outer sleeve body, and is capable of measuring the temperature of the bottom of the pot;
A guide structure is provided between the diameter-reduced portion and the support component main body, the outer sleeve is reciprocally movable with respect to the support component along the axial direction of the support component, and the elastic component is configured to: It is supported between the circumferential protrusion and the upper end of the outer sleeve body.

Preferably, the guide structure includes a guide groove and a guide protrusion that are engaged with each other, and when the guide groove is provided on the inner surface of the reduced diameter portion, the guide protrusion is provided on the outer surface of the supporting part main body. is provided, and when the guide groove is provided on the outer surface of the support component main body, the guide protrusion is provided on the inner surface of the reduced diameter portion, and the guide groove and the guide protrusion are both the above It extends along the axial direction of the support component.

Preferably, the guide groove or the guide protrusion in the support component body is configured to extend to the circumferential protrusion,
Alternatively, the guide groove or the guide protrusion in the support component body is configured to extend with a gap from the circumferential protrusion.

Preferably, the cross-sectional shapes of the guide grooves and the guide protrusions are triangular, rectangular or semicircular,
Two guide protrusions are provided, the two guide protrusions are provided symmetrically, and the guide grooves are provided one-to-one with the guide protrusions.

Preferably, the gas stove safety device further comprises a fire cover, the fire cover comprising a fire cover main body and a fire cover reduced-diameter portion, and between the fire cover main body and the fire cover reduced-diameter portion Fire protection cover shoulder is connected to
The fire cover main body is fitted over the outer sleeve body and spaced apart from the outer sleeve body, the fire cover reduced-diameter portion is fitted over the reduced-diameter portion, and heat is dissipated to the fire cover shoulder. a through hole is provided, the fire cover shoulder is fixedly connected to the sleeve shoulder;
the temperature sensor assembly comprises a temperature sensing column, the temperature sensing column is installed on the upper end of the outer sleeve body, the top end of the fire cover is positioned below the upper surface of the temperature sensing column;
The fire cover is made of an antioxidant material.

Preferably, the gas stove safety device further comprises an inner sleeve, the inner sleeve is installed inside the outer sleeve, the upper end of the inner sleeve is fixedly connected with the upper end of the outer sleeve, and the lower end of the inner sleeve is is insertable into the support component body, and the elastic component is fitted over the inner sleeve,
The support component further comprises an extension tube and an engaging portion, the upper end of the extension tube being connected to the lower end of the support component body,
The support component further comprises an engaging portion, and the engaging portion is provided on the outer surface of the extension tube.

Preferably, the temperature sensor assembly further comprises a thermistor, a cable and a connector, the connector is arranged to be electrically connected with the switch of the gas stove, and the temperature sensing column is installed on the upper end of the outer sleeve. , the upper end of the inner sleeve is connected to the outer sleeve through the temperature-sensitive column;
The inner sleeve is an insulating inner sleeve.

Preferably, the thermistor is installed in the inner sleeve, the thermistor is in contact with the temperature-sensitive column, the thermistor is electrically connected to one end of the cable, and the other end of the cable protrudes from the support component body, It is electrically connected with the connector.

Preferably, the support component is a stepped support tube comprising a support tube body and an expansion tube that are connected, and the tube wall of the expansion tube extends circumferentially with respect to the tube wall of the support tube body. The circumferential projection is connected between the expansion tube and the support tube body, the expansion tube and the circumferential projection are installed in the outer sleeve body, and the support tube body projects outwardly. The lower end can protrude from the diameter-reduced portion,
A lower end of the elastic component is inserted into the expansion tube and contacts the circumferential protrusion.

Preferably, a glass fiber silica gel cover is fitted over the outer surface of said cable.

Preferably, the circumferential protrusion of the gas stove safety device is provided with one or more, and is installed to extend outside the circumferential edge of the supporting part body, and one circumferential protrusion is provided. when provided, said circumferential ridges extend continuously along the circumferential edge of the upper end of said support part body, and when a plurality of circumferential ridges are provided, said circumferential ridges are equally spaced apart. is connected to the circumferential edge of the upper end of the supporting part body.

Preferably, the outer diameter of the supporting part main body is set smaller than the inner diameter of the diameter-reduced portion, and the outer diameter of the circumferential projection is smaller than the inner diameter of the outer sleeve main body and larger than the inner diameter of the diameter-reduced portion. be provided.

Preferably, the elastic part has one end in contact with the temperature-sensing column and the other end in contact with the inner wall of the circumferential protrusion, and the elastic part has the outer sleeve downwardly with respect to the support part. Displaceably arranged to be compressed by an external force in a second state.

Preferably, the temperature sensing column includes a base column, and an inner ring and an outer ring concentrically provided on the base column, the inner sleeve being fitted around the inner ring of the temperature sensing column and A sleeve is fitted over the outer ring of the temperature sensitive column.

Preferably, one end of the elastic part abutting against the temperature sensitive column is installed between an inner ring and an outer ring of the temperature sensitive column.

Preferably, said elastic component is a spring.

An object of the present disclosure is, for example, to provide a gas stove that utilizes the above gas stove safety device. When the gas stove is used, the safety device of the gas stove effectively realizes the function of preventing empty heating, thereby improving the safety of the gas stove.

The gas stove safety device according to the embodiment of the present application has a simple configuration, can be easily processed, and can realize a dry-heating prevention function of the gas stove, thereby improving the safety of the gas stove. In addition, the overall structure is well-balanced, rational, easy to manufacture and install, and reduces production costs. It contributes to the smoothness of the relative sliding between the supporting part and the outer sleeve, and furthermore, noise can be reduced and the service life can be extended, thus improving the quality and market competitiveness of the safety device for the gas stove.

In order to make the above objects, features and advantages of the present application easier to understand, a detailed description is given below with reference to preferred embodiments and drawings.

In order to more clearly describe the specific embodiments or technical solutions of the prior art in the present disclosure, the drawings required for the specific embodiments or technical solutions of the prior art will be briefly described below. Of course, the described drawings merely depict some embodiments of the disclosure. Those skilled in the art can derive other drawings based on these drawings without using their inventive ability.

1 is a structural schematic diagram of a first state of a safety device for a gas stove according to an embodiment of the present disclosure; FIG. FIG. 4 is a structural schematic diagram of the second state of the safety device for the gas stove according to the embodiment of the present disclosure; FIG. 4 is another configuration schematic diagram of the first state of the safety device for the gas stove according to the embodiment of the present disclosure; FIG. 3 is a structural schematic diagram of the outer sleeve of the safety device for the gas stove according to the embodiment of the present disclosure; FIG. 2 is a structural schematic diagram of a supporting part of a safety device for a gas stove according to an embodiment of the present disclosure; FIG. 4 is a structural schematic diagram of the inner sleeve of the safety device for the gas stove according to the embodiment of the present disclosure; FIG. 2 is a structural schematic diagram of a fire protection cover of a safety device for a gas stove according to an embodiment of the present disclosure; FIG. 2 is a structural schematic diagram of a temperature sensor assembly of a safety device for a gas stove according to an embodiment of the present disclosure;

The technical solution of the present disclosure will be clearly and completely described below with reference to the drawings. Of course, the described embodiments are only some, but not all embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without using their inventive ability also fall within the protection scope of the present disclosure.

In the description of this disclosure, the direction or The positional relationship is based on the drawings and is only for convenience and simplification of the present disclosure. It is to be understood that it is not intended to limit the present disclosure as it is not intended to be manipulated or implied. It is also to be understood that terms such as "first", "second", "third" are for descriptive purposes only and do not express or imply any relative importance.

In describing this disclosure, terms such as “attachment,” “coupling,” “connection,” etc. should be interpreted broadly, unless explicitly defined and limited. For example, it may be a fixed connection, a removable connection, or an integral connection. Then, it may be a mechanical connection or an electrical connection. Moreover, they may be directly connected, or indirectly connected via an intermediate, or the insides of the two elements may be communicated with each other. A person skilled in the art can understand the specific meaning of the above terms in this disclosure depending on the specific situation.

As shown in FIGS. 1-8, this embodiment provides a safety device for a gas stove. FIG. 1 is a structural schematic diagram of the first state of the safety device for the gas stove according to the present embodiment, and specifically shows the positional relationship between the parts in the unused state. FIG. 2 is a structural schematic diagram of the second state of the safety device for the gas stove according to the present embodiment, specifically showing the positional relationship between the parts in the state of use. FIG. 3 is another configuration schematic diagram of the first state of the safety device for the gas stove according to the present embodiment. Specifically, only the temperature sensing column and the thermistor of the temperature sensor assembly are shown in order to more clearly show the features of the configuration. , omitting other parts in the temperature sensor assembly. FIG. 4 is a structural schematic diagram of the outer sleeve of the safety device for the gas stove according to the present embodiment. FIG. 5 is a structural schematic diagram of a supporting part of the safety device for the gas stove according to the present embodiment. FIG. 6 is a structural schematic diagram of the inner sleeve of the safety device for the gas stove according to the present embodiment. FIG. 7 is a schematic diagram of the configuration of the fire protection cover of the safety device for the gas stove according to the present embodiment. FIG. 8 is a structural schematic diagram of the temperature sensor assembly of the safety device for the gas stove according to the present embodiment. 1 to 3 are cross-sectional views, and hatching is omitted in order to show the configuration more clearly.

The gas stove safety device according to the present embodiment can prevent empty heating by the gas stove.

As shown in FIGS. 1 to 8, the gas stove safety device has a support part 1 . The support part 1 includes a support part body 10 and a circumferential protrusion 11 connected to the upper end of the support part body 10 . Preferably, one or a plurality of circumferential protrusions 11 are provided. When one circumferential ridge 11 is provided, it extends continuously along the circumferential edge of the upper end of the support part body 10 and the circumferential edge of the support part body 10 configured to protrude from the As shown in FIG. 5, it is preferable to be configured to protrude from the edge in the circumferential direction with the same width. Alternatively, when a plurality of circumferential projections 11 are provided, the plurality of circumferential projections 11 are connected to the circumferential edge of the upper end of the support component main body 10 at equal or non-equidistant intervals.

The gas stove safety device further comprises an outer sleeve 2 comprising an outer sleeve body 20 and a reduced diameter portion 21 to be connected. Since the inner diameter of the outer sleeve body 20 is larger than the inner diameter of the reduced diameter portion 21, a sleeve shoulder portion 22 is formed at the connection therebetween. Also, in the outer sleeve main body 20 , the elastic component 8 is connected between the circumferential protrusion 11 and the upper end of the outer sleeve main body 20 . Hereinafter, the elastic part 8 and the method of connecting it with the circumferential projection 11 and the outer sleeve body 20 will be described in detail. The sleeve shoulder portion 22 can prevent the circumferential protrusion 11 from falling off from the outer sleeve main body 20 , and the reduced diameter portion 21 is externally fitted on the support component main body 10 . Specifically, the support component 1 is slidably inserted within the outer sleeve 2 . More specifically, in the support component 1, the outer diameter of the support component main body 10 is smaller than the inner diameter of the reduced diameter portion 21, the outer diameter of the circumferential projection 11 is smaller than the inner diameter of the outer sleeve main body 20, and the reduced diameter portion 21 is configured to be larger than the inner diameter of the Therefore, when the lower end of the support component 1 (the end spaced apart from the circumferential projection 11) is inserted into the outer sleeve 2 from the end spaced from the reduced diameter portion 21 of the outer sleeve body 20, or by other means, the support component 1 is installed in the outer sleeve 2, the outer sleeve 2 can slide up and down with respect to the support part 1. As shown in FIG. When the sleeve shoulder 22 of the outer sleeve 2 abuts against the circumferential projection 11 , the sliding is stopped, which is the limit position in which the outer sleeve 2 can slide upwards relative to the support part 1 .

The cross-sectional shapes of the outer sleeve body 20, the reduced diameter portion 21, and the support component body 10 are preferably circular. Depending on the situation, the cross-sectional shapes of the outer sleeve main body 20, the reduced diameter portion 21, and the support component main body 10 may be polygonal. In order to slide within the outer sleeve body 20 and the reduced diameter portion 21 of the support component body 10 , the cross-sectional shape of the outer wall of the support component body 10 should match the cross-sectional shapes of the inner walls of both the outer sleeve body 20 and the reduced diameter portion 21 . It is preferably formed in

The gas stove safety device further comprises a temperature sensor assembly 3 . The temperature sensor assembly 3 is installed in the outer sleeve body 20 and is connected with the outer sleeve body 20, eg by engagement. This allows the temperature sensor assembly 3 to move up and down with respect to the support component body 10 together with the outer sleeve body 20 . The temperature sensor assembly 3 can measure the temperature of the bottom of the pot. By installing the temperature sensor assembly 3 in the outer sleeve body 20, the temperature sensor assembly 3 can be isolated from the fire of the gas stove, so that the temperature sensor can be prevented from being burned by the fire of the gas stove, and the bottom of the pot can be can ensure more accurate temperature measurement by the temperature sensor for

Further, a guide structure is provided between the reduced diameter portion 21 and the support component main body 10 in order to realize the reciprocating movement of the outer sleeve 2 along the axial direction of the support component 1 with respect to the support component 1 . The guide structure can prevent the circumferential rotation of the outer sleeve 2 with respect to the supporting part 1, and can ensure the movement of the outer sleeve 2 along the axial direction of the supporting part 1, so that the gas stove is safe when used. stability can be ensured. The elastic component 8 is supported between the circumferential projection 11 and the upper end of the outer sleeve body 20 . In the unused or first state, the elastic component 8 is not compressed by an external force and is in an extended state, thus driving the upward movement of the outer sleeve 2 relative to the support component 1 . When the circumferential projection 11 comes into contact with the shoulder 22 of the sleeve, the outer sleeve 2 and the supporting part 1 are fixed to each other, so that the outer sleeve 2 and the supporting part 1 in the unused state are not worn unnecessarily. It is possible to prevent this, and the life of the gas stove safety device has been extended.

The operating principle of the safety device of the gas stove is as follows. The lower end of the support component main body 10 is fixed to the gas stove. In the unused state, the elastic component 8 causes the outer sleeve 2 to move upwards relative to the support component 1 until the circumferential projection 11 abuts against the sleeve shoulder 22 . As a result, an axial position limitation is achieved between the outer sleeve 2 and the support component 1, and axial detachment of the outer sleeve 2 and the support component 1 can be prevented. In use, the bottom of the pan presses against the outer sleeve body 20 and the gravitational force of the pan compresses the elastic component 8, thus allowing the outer sleeve 2 to move downwards relative to the support component 1. When the position of the bottom of the pan is stabilized, the elastic element 8 is supported between the outer sleeve 2 and the support part 1, since the outer sleeve 2 and the support part 1 are in a state of relative rest. In this case, the temperature sensor assembly 3 in the outer sleeve 2 measures the temperature of the bottom of the pot and converts the temperature information into electrical signals. This controls the switch of the gas stove. Such measurement of the temperature of the bottom of the pot may be performed continuously or intermittently, and can be preset as necessary. Specifically, when the temperature at the bottom of the pot measured by the temperature sensor is too high, the flame of the gas stove is extinguished, thereby preventing the gas stove from burning dry, thereby improving the safety of the gas stove.

In particular, in the safety device for the gas stove, the guide structure is provided between the reduced diameter portion 21 and the supporting part main body 10, so that the elastic part 8 can be vertically expanded and contracted with respect to the guide structure, and the diameter of the supporting part main body 10 is reduced. Improved space utilization in the direction. As a result, it is possible to prevent the elastic part 8 and the guide structure from being arranged in the radial direction of the elastic part 8, so that the outer sleeve 2 can be prevented from becoming excessively large in the radial direction, which is a safety device for the gas stove. The overall structure is reasonable. In addition, a guide structure is provided directly between the reduced diameter portion 21 and the support component main body 10, that is, a part of the guide structure is integrally molded with the reduced diameter portion 21, and the rest of the guide structure is supported. Since it is integrally molded with the component body 10, it is easier to integrally mold compared to separately manufacturing a complicated liner to realize a guide, and there is no need to separately manufacture a complicated component. Therefore, production costs are lower. Further, since the support part 1 and the outer sleeve 2 are formed by stretching, the outer surface of the support part main body 10 becomes a smooth surface. By providing a guide structure between the supporting part main body 10 and the receiving part, it is possible to contribute to smooth relative sliding between the supporting part 1 and the outer sleeve 2, further reduce noise, and achieve a longer life. Therefore, the quality and market competitiveness of the gas stove safety device are improved.

The gas stove safety device of the present embodiment has a simple configuration, can be easily processed, and can realize a dry-heating prevention function of the gas stove, thereby improving the safety of the gas stove. In addition, the overall structure is well-balanced, rational, easy to manufacture and install, and reduces production costs. In addition, it contributes to smooth relative sliding between the support part 1 and the outer sleeve 2, furthermore, noise can be reduced, and a longer service life can be achieved. improved.

In the preferred technical solution of this embodiment, the guide structure comprises a guide groove 4 and a guide protrusion 5 which are engaged with each other. The guide groove 4 is provided on the inner surface of the reduced diameter portion 21 or the outer surface of the support component body 10, the guide protrusion 5 is provided on the outer surface of the support component body 10 or the inner surface of the reduced diameter portion 21, and the guide groove 4 and the guide are provided. Both projections 5 extend along the axial direction of the support component 1 . That is, when the guide groove 4 is provided on the inner surface of the reduced diameter portion 21, the guide protrusion 5 is provided on the outer surface of the support component main body 10, and the engagement connection between the guide protrusion 5 and the guide groove 4 allows A relative sliding between the outer sleeve 2 and the supporting part 1 is realized. Alternatively, when the guide projections 5 are provided on the inner surface of the diameter-reduced portion 21, the guide grooves 4 are provided on the outer surface of the support component main body 10, and by the engagement connection between the guide projections 5 and the guide grooves 4, A relative sliding between the outer sleeve 2 and the supporting part 1 is realized.

Since the configuration of the guide groove 4 and the guide protrusion 5 is simple and can be easily processed, it is easy to integrally mold the reduced-diameter portion 21 and the support component main body 10 . It is preferable that the guide groove 4 and the guide protrusion 5 are connected by an intermediate fit. This ensures tightness of engagement and satisfies smoothness requirements.

Preferably, the outer sleeve main body 20 is a straight tube, the inner diameter thereof is 10.5±0.05 mm, the inner diameter of the reduced diameter portion 21 is 8.3±0.1 mm, and the shaft of the reduced diameter portion 21 is The direction length is 5-6 mm.

In the preferred technical solution of this embodiment, the guide grooves 4 or the guide protrusions 5 in the supporting part body 10 extend to the circumferential protrusions 11, and the guide protrusions 5 or the guide grooves 4 in the reduced diameter portion 21 extend to the sleeve. It is configured to extend to shoulder 22 . As a result, the contact area between the guide projections 5 and the guide grooves 4 is increased, and the relative sliding stability between the support part 1 and the outer sleeve 2 is improved.

Alternatively, the guide grooves 4 or the guide protrusions 5 in the supporting part main body 10 extend to a point separated from the circumferential direction protrusions 11 by a certain distance, and the guide protrusions 5 or the guide grooves 4 in the diameter-reduced portion 21 are aligned with the sleeve shoulders. It is configured to extend to a location separated from the portion 22 by a certain distance. As a result, the guide projections 5 and the guide grooves 4 can be machined while avoiding the sleeve shoulder portion 22 and the circumferential projections 11 . Specifically, the guide grooves 4 and the guide protrusions 5 may be configured to extend partly in the longitudinal direction of the reduced-diameter portion 21 or the support component main body 10 . As shown in FIGS. 4 and 5, the guide projection 5 has an open end and a sealed end, the open end being positioned at one end of the reduced diameter portion 21, and the sealed end being the reduced diameter portion 21. Located in Chubu. The guide groove 4 has an open end and a sealed end. Therefore, the mutual engagement between the guide groove 4 and the guide projection 5 has not only a guiding function but also a stopping function. For example, when the sealed end of the guide protrusion 5 abuts the sealed end of the guide groove 4, the outer sleeve 2 can be prevented from sliding upward and detaching from the support component 1. FIG.

In the preferred technical solution of this embodiment, the cross-sectional shapes of the guide grooves 4 and the guide protrusions 5 are triangular, rectangular or semi-circular.

One or a plurality of guide protrusions 5 may be provided, and preferably two guide protrusions 5 are provided. Two guide protrusions 5 are provided symmetrically, and the guide grooves 4 are provided one-to-one with the guide protrusions 5 . Two symmetrically arranged guide lugs 5 and two correspondingly symmetrically arranged guide grooves 4 improve the guiding stability of the guiding structure. In addition, compared to the technical solution in which more guide protrusions 5 are provided, the difficulty of processing and the requirement for mounting accuracy can be reduced, resulting in cost reduction.

Preferably, the guide groove 4 has a depth of 0.8 to 1.5 mm in the radial direction of the supporting part body 10 and extends along the axial direction of the supporting part body 10. has an axial length of 20-27 mm and extends 1-2 mm along the circumferential direction of the support component body 10 .

Preferably, the guide protrusion 5 has a depth of 0.8 to 1.5 mm in the radial direction of the reduced diameter portion 21 and extends along the axial direction of the reduced diameter portion 21. has an axial length of 3 to 6 mm, and extends 1 to 2 mm along the circumferential direction of the reduced diameter portion 21 .

In the preferred technical solution of this embodiment, the gas stove safety device further comprises a fire protection cover 6 . The fireproof cover 6 includes a fireproof cover main body 60 and a fireproof cover reduced-diameter portion 61 , and the inner diameter of the fireproof cover main body 60 is formed larger than the inner diameter of the fireproof cover reduced-diameter portion 61 . As a result, a fireproof cover shoulder portion 62 is formed at the connecting portion between the fireproof cover main body 60 and the fireproof cover reduced diameter portion 61 . Preferably, the fire protection cover main body 60 has the same cross-sectional shape as the outer sleeve main body 20 , and the fire protection cover reduced-diameter portion 61 has the same cross-sectional shape as the reduced-diameter portion 21 .

As shown in FIGS. 1 to 3 and 7, the fire protection cover body 60 is fitted over the outer sleeve body 20 and spaced apart from the outer sleeve body 20 . A fire cover reduced diameter portion 61 is fitted over the reduced diameter portion 21 , a heat radiation through-hole 63 is provided in a fire cover shoulder portion 62 , and the fire cover shoulder portion 62 is fixedly connected to the sleeve shoulder portion 22 . Therefore, when the outer sleeve 2 reciprocates along the axial direction of the support part 1 , the fire cover 6 also moves together with the outer sleeve 2 . In addition, by providing the heat radiation through-holes 63, the flow velocity of the air inside the protective cover 6 can be increased, so that the heat radiation inside the fireproof cover 6 can be contributed. Therefore, the temperature sensor assembly 3 can be protected and the accuracy of temperature measurement can be improved.

The temperature sensor assembly 3 also comprises a temperature sensitive column 30 installed on the upper end of the outer sleeve body 20 . The upper end of the fire cover 6 is positioned below the upper surface of the temperature sensitive column 30 in the vertical direction, that is, in the axial direction. That is, there is a step between the upper end of the fire cover 6 and the upper surface of the temperature sensing column 30 in the axial direction. Therefore, when the temperature sensing column 30 contacts the bottom of the pan, the bottom of the pan is not in contact with the upper end of the fire cover 6, but only the upper surface of the temperature sensing column 30, and the hot pan of the fire cover 6 Since long-term contact with the bottom of the fireproof cover 6 can be prevented, the service life of the fireproof cover 6 can be extended. In addition, by installing the heat radiation through-hole 63, it is possible to promote the flow of air and heat radiation, so that the concentration of heat on the temperature sensing column 30 can be prevented, and the accuracy of temperature measurement can be ensured at all times. be able to.

Preferably, the elastic component 8 is supported between the temperature sensitive column 30 and the inner wall of the circumferential projection 11 . Therefore, the temperature-sensing column 30 can be brought into close contact with the bottom of the pan by the elastic part 8, so that the real-time and accuracy of temperature collection of the temperature-sensing column 30 can be improved. Moreover, when the temperature sensitive assembly in the temperature sensor assembly contacts the temperature sensitive column 30, the temperature of the bottom of the pan can be accurately measured.

Preferably, the temperature-sensing column 30 is made of a material with high thermal conductivity, so that the heat can be transferred quickly, so that the temperature of the bottom of the pot can be reflected quickly and accurately.

Since the fireproof cover 6 is made of an antioxidant material, it can be ensured that it will not discolor even if it is used for a long time in a high-temperature environment of a gas stove. This is aesthetically pleasing and can effectively protect the temperature sensor assembly 3 inside the outer sleeve 2 .

Preferably, the outer diameter of the fireproof cover body 60 is 1.5 to 2 times the outer diameter of the outer sleeve body 20 . Preferably, the axial length of the fireproof cover body 60 is configured to be 0.3 to 1 mm shorter than the axial length of the outer sleeve body 20 . The upper surface of the temperature sensing column 30 protrudes upward so as to be higher than the upper end edge of the fire prevention cover body 60 by 0.3 to 5 mm.

In the preferred technical solution of this embodiment, the gas stove safety device further comprises an inner sleeve 7 . The inner sleeve 7 is installed inside the outer sleeve 2 , its upper end is fixedly connected to the upper end of the outer sleeve 2 , and its lower end can be inserted into the support component body 10 . An elastic component 8 is fitted over the inner sleeve 7 . By installing the inner sleeve 7, the inner surface of the elastic part 8 can be supported, so that twisting of the elastic part 8 during use can be avoided, and the expansion and contraction stability of the safety device of the gas stove can be improved. can be done.

The support part 1 comprises an extension tube and an engaging part 13, the upper end of the extension tube is connected to the lower end of the support part body 10, and the engagement part 13 is installed on the outer surface of the extension tube along the circumferential direction. By installing the extension tube and the engaging portion 13, the connection between the safety device and the gas stove can be realized more reliably.

Preferably, the engaging portion 13 is made of a metal ring, and the thickness of the metal ring in the radial direction is 1 to 1.5 mm, and the metal ring is 8 to 15 mm from the lower end edge of the drawing tube. It is caulked at the point of

Preferably, the upper end of the inner sleeve 7 is fixedly connected to the upper end of the outer sleeve 2 via a temperature sensitive column 30 . Specifically, as shown in FIGS. 1 to 3, the upper end of the inner sleeve 7 is fixedly connected to the temperature sensing column 30 by, for example, engagement. It is indirectly fixedly connected to the upper end of the outer sleeve 2 . The upper end of the inner sleeve 7 may be fixedly connected directly with the upper end of the outer sleeve 2 .

In the preferred technical solution of this embodiment, the temperature sensor assembly 3 further comprises a thermistor 31, a cable 32 and a connector 33, and the connector 33 is electrically connected with the switch of the gas stove. A temperature-sensing column 30 is installed on the upper end of the outer sleeve 2 , and the upper end of the inner sleeve 7 is connected to the outer sleeve 2 via the temperature-sensing column 30 .

As shown in FIG. 8 , the thermistor 31 is installed inside the inner sleeve 7 , one end of which is in contact with the temperature sensing column 30 and the other end of which is electrically connected to one end of the cable 32 . The other end of the cable 32 protrudes from the support component body 10 and is electrically connected to the connector 33 .

The inner sleeve 7 is an insulating inner sleeve. Furthermore, the inner sleeve 7 may consist of a high temperature resistant material. Therefore, the safety of the circuit of the temperature sensor assembly 3 can be guaranteed.

Preferably, the thermistor 31 is an NTC thermistor 31 (negative temperature coefficient thermistor), the cable 32 is connected with the thermistor 31 by resistance welding or terminal crimping, and the connector 33 is a quick connector. Therefore, it meets the standard and the quick connector allows quick and easy connection to external circuits.

Preferably, the temperature sensitive column 30 comprises a base column and inner and outer rings concentrically mounted on the base column. The outer diameter of the base column is 8-12 mm. The vertical thickness of the base column is 0.3 to 1 mm. The outer diameter of the outer ring is 0.3-0.5 mm smaller than the outer diameter of the base ring. The radial thickness of the outer ring is 0.8-1.0 mm. The vertical length of the outer ring is 2.5 to 3 mm. The radial thickness of the inner ring is 0.7-1.5 mm. The vertical length of the inner ring is 5 to 8 mm. The inner sleeve 7 is fitted around the inner ring of the temperature sensing column 30 , the outer sleeve 2 is fitted around the outer ring of the temperature sensing column 30 , and the elastic part 8 is fitted between the inner ring and the outer ring of the temperature sensing column 30 . is placed between

Preferably, the glass ball of the thermistor 31 is installed in the inner ring of the temperature sensitive column 30 and attached to the base column of the temperature sensitive column 30 .

In the preferred technical solution of this embodiment, the outer surface of the cable 32 is fitted with a glass fiber silica gel cover 34 . This can avoid improper connection of multiple cables 32 to each other and guarantee the safety of the safety device of the gas stove.

In the preferred technical solution of this embodiment, the support part 1 has a stepped support tube with a support tube body and an extension tube to be connected. The tube wall of the expansion tube protrudes outward along the circumferential direction with respect to the tube wall of the support tube body. A circumferential projection 11 is connected between the expansion tube and the support tube body, the expansion tube and the circumferential projection 11 are installed in the outer sleeve body 20, and the lower end of the support tube body extends from the diameter reduction portion 21. It can stick out.

The lower end of the elastic part 8 is inserted into the expansion tube and abuts on the circumferential protrusion 11 . By installing the expansion tube, it is possible to prevent radial sliding of the elastic part 8 with respect to the circumferential protrusion 11 .

It should be noted that each of the above examples is merely for explaining the technical solution of the present disclosure, and is not intended to limit it. Although the present disclosure has been described in detail with reference to each of the above examples, those skilled in the art may modify the technical solutions described in each of the above examples. Features may be evenly replaced. These modifications or replacements do not deviate from the scope of the technical solution of each embodiment of the present disclosure. Also, while some of the embodiments above have certain features that are included in other embodiments, the combination of features from different embodiments results in other embodiments within the scope of this disclosure, such as: It should be understood by those skilled in the art. For example, the claimed embodiments may be combined arbitrarily. The information disclosed in the Background section is provided to provide an understanding of the overall background of the invention and is not an admission or implied in any way that it is known prior art to those skilled in the art. It should be understood that it is not.

The present disclosure provides a gas stove safety device and a gas stove utilizing the gas stove safety device. The safety device for the gas stove has a simple structure, can be easily processed, and can realize the function of preventing the gas stove from running dry, thereby improving the safety of the gas stove. In addition, the overall structure is well-balanced, rational, easy to manufacture and install, and reduces production costs. And it can contribute to the smoothness of the relative sliding between the support part and the outer sleeve, reduce wear, further reduce noise, and achieve a longer life. improved competitiveness.

Reference Signs List 1 Supporting component 10 Supporting component main body 11 Circumferential projection 13 Engaging portion 2 Outer sleeve 20 Outer sleeve main body 21 Reduced diameter portion 22 Sleeve shoulder 3 Temperature sensor assembly 30 Temperature sensing column 31 Thermistor 32 Cable 33 Connector 34 Glass fiber silica gel cover 4 Guide concave groove 5 Guide protrusion 6 Fire cover 60 Fire cover main body 61 Fire cover reduced diameter portion 62 Fire cover shoulder 63 Heat dissipation through Hole 7... Inner sleeve 8... Elastic part

Claims (16)

having a support component, an outer sleeve and a temperature sensor assembly;
The support component includes a support component body and a circumferential protrusion connected to the upper end of the support component body,
The outer sleeve includes an outer sleeve main body and a reduced diameter portion that are connected to each other, a sleeve shoulder portion is formed between the outer sleeve main body and the reduced diameter portion, and the circumferential protrusion is formed in the outer sleeve main body. and an elastic part is connected between the circumferential protrusion and the upper end of the outer sleeve body, and the sleeve shoulder prevents the circumferential protrusion from falling off from the outer sleeve body. , the reduced diameter portion is extrapolated to the outside of the support component body,
the temperature sensor assembly is installed in the outer sleeve body and connected with the outer sleeve body, and is capable of measuring the temperature of the bottom of the pot;
A guide structure is provided between the diameter-reduced portion and the support component main body, the outer sleeve is reciprocally movable with respect to the support component along the axial direction of the support component, and the elastic component is configured to: supported between the circumferential protrusion and the upper end of the outer sleeve body ;
A plurality of the circumferential protrusions of the safety device for the gas stove are provided, and are installed so as to extend to the outside of the circumferential edge of the supporting part main body,
The plurality of circumferential protrusions are connected to the circumferential edge of the upper end of the supporting part body at regular intervals.
A safety device for a gas stove, characterized by: The guide structure includes a guide groove and a guide protrusion that engage with each other,
When the guide groove is provided on the inner surface of the diameter-reduced portion, the guide protrusion is provided on the outer surface of the supporting part main body, and when the guide groove is provided on the outer surface of the supporting part main body, the diameter-reduced portion is provided. The guide protrusion is provided on the inner surface of the part,
The safety device for a gas stove according to claim 1, wherein both the guide groove and the guide projection extend along the axial direction of the support component. The guide groove or the guide protrusion in the support component body is configured to extend to the circumferential protrusion,
Alternatively, the guide groove or the guide projection in the supporting part main body is configured to extend with a space from the circumferential projection. Device. The cross-sectional shapes of the guide grooves and the guide protrusions are both triangular, rectangular or semicircular,
4. The guide projection according to any one of claims 1 to 3, wherein two of the guide projections are provided, two of the guide projections are provided symmetrically, and the guide grooves are provided one-to-one with the guide projections. A safety device for a gas stove according to item 1. Furthermore, it has a fireproof cover,
The fire cover includes a fire cover main body and a fire cover reduced diameter portion, and a fire cover shoulder portion is connected between the fire cover main body and the fire cover reduced diameter portion,
The fire cover main body is fitted over the outer sleeve body and spaced apart from the outer sleeve body, the fire cover reduced-diameter portion is fitted over the reduced-diameter portion, and heat is dissipated to the fire cover shoulder. a through hole is provided, the fire cover shoulder is fixedly connected to the sleeve shoulder;
the temperature sensor assembly comprises a temperature sensing column, the temperature sensing column is installed on the upper end of the outer sleeve body, the top end of the fire cover is positioned below the upper surface of the temperature sensing column;
The safety device for a gas stove according to any one of claims 1 to 4, wherein the fire protection cover is made of an antioxidant material. The gas stove safety device further comprises an inner sleeve, the inner sleeve is installed inside the outer sleeve, the upper end of the inner sleeve is fixedly connected to the upper end of the outer sleeve, and the lower end of the inner sleeve is supported by the support. is insertable into the component body, the elastic component is fitted over the inner sleeve,
The support component further comprises an extension tube and an engaging portion, the upper end of the extension tube being connected to the lower end of the support component body ,
The safety device for a gas stove according to claim 5 , wherein the engaging portion is provided on the outer surface of the extension tube. the temperature sensor assembly further comprising a thermistor, a cable and a connector;
The connector is arranged to be electrically connected to a switch of the gas stove, the temperature-sensing column is installed on the upper end of the outer sleeve, and the upper end of the inner sleeve communicates with the outer sleeve through the temperature-sensing column. connected and
The gas stove safety device according to claim 6 , wherein the inner sleeve is an insulating inner sleeve. The thermistor is installed in the inner sleeve, the thermistor is in contact with the temperature-sensitive column, the thermistor is electrically connected to one end of the cable, the other end of the cable protrudes from the support component body, and is connected to the connector. 8. The gas stove safety device according to claim 7, wherein the safety device is electrically connected. the support component is a stepped support tube comprising a support tube body and an extension tube that are connected;
the tube wall of the expansion tube protrudes outward along the circumferential direction with respect to the tube wall of the support tube main body;
The circumferential projection is connected between the expansion tube and the support tube body, the expansion tube and the circumferential projection are installed in the outer sleeve body, and the lower end of the support tube body is the contraction It is possible to protrude from the diameter part,
The gas stove safety device according to claim 7 or 8 , wherein the lower end of the elastic part is inserted into the expansion tube and abuts on the circumferential projection. A safety device for a gas stove according to any one of claims 7 to 9, characterized in that a glass fiber silica gel cover is fitted around the outer surface of said cable. The outer diameter of the supporting part main body is set smaller than the inner diameter of the diameter-reduced portion, and the outer diameter of the circumferential protrusion is set smaller than the inner diameter of the outer sleeve main body and larger than the inner diameter of the diameter-reduced portion. The safety device for a gas stove according to claim 10 , characterized by: one end of the elastic part abuts on the temperature sensing column and the other end abuts on the inner wall of the circumferential projection;
12. Any one of claims 6 to 11 , wherein the elastic component is arranged to be compressed by an external force in a second state such that the outer sleeve can move downwards relative to the support component. 1. The gas stove safety device according to 1. The temperature sensing column comprises a base column, and an inner ring and an outer ring concentrically provided on the base column,
The inner sleeve is fitted around the inner ring of the temperature sensing column, and the outer sleeve is fitted around the outer ring of the temperature sensing column. gas stove safety device. 14. The temperature sensing column according to any one of claims 5 to 13 , wherein one end of said elastic component that contacts said temperature sensing column is installed between an inner ring and an outer ring of said temperature sensing column. Gas stove safety device. A safety device for a gas stove according to any one of claims 1 to 14 , wherein the elastic component is a spring. A gas stove utilizing the gas stove safety device according to any one of claims 1 to 15 .

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