A temperature-controlled safety valve for gas

Abstract

The present invention discloses a temperature-controlled safety valve for gas, comprising a valve body, an air inlet being arranged on the valve body, an electromagnetic valve for opening and closing the air inlet being arranged on the valve body, at least one air outlet connected with the air inlet being arranged on the valve body, a thermally deformable metal sheet being arranged on each air outlet, the thermally deformable metal sheet closing the air outlet at normal temperature, a heater cooperating with the thermally deformable metal sheet being arranged in the valve body, the on and off of the air inlet being controlled by the electromagnetic valve, thereby playing a first-level protective temperature control role, the deformation of the thermally deformable metal sheet being controlled by the heater, thereby controlling the on and off of the air outlet, thereby playing a second-level protective temperature control role, thereby achieving a better temperature control effect and a stronger safety performance.

Description

Technical Field

[0001] The invention relates to the field of valve bodies, in particular to a temperature-controlled safety valve for gas. Background Art

[0002] When the burner uses gas, in order to control the temperature, a valve is generally used to control the on and off of the gas or the gas flow is adjusted through the principle of liquid expansion to control the firepower. The existing valves only have one level of temperature control capability, resulting in low temperature control accuracy. Summary of the invention

[0003] In order to solve the above technical problems, the object of the present invention is to provide a gas safety valve with higher temperature control accuracy and greater safety.

[0004] The technical solution adopted by the present invention to solve the problem is: a temperature-controlled safety valve for gas, comprising:

[0005] A valve body, wherein an air inlet is arranged on the valve body, an electromagnetic valve for opening and closing the air inlet is arranged on the valve body, at least one air outlet connected with the air inlet is arranged on the valve body, a thermally deformable metal sheet is arranged on each air outlet, the thermally deformable metal sheet closes the air outlet at normal temperature, and a heater cooperating with the thermally deformable metal sheet is arranged in the valve body.

[0006] As a further improvement of the above technical solution, a sealing gasket is provided on the valve body and is located between the thermally deformed metal sheet and the air outlet.

[0007] As a further improvement of the above technical solution, there are two air outlets on the valve body.

[0008] As a further improvement of the above technical solution, a gas chamber is provided in the valve body, the air inlet and the air outlet are both connected to the gas chamber, the solenoid valve is provided in the gas chamber, the heat-deformed metal sheet is provided in the gas chamber, and the heat-deformed metal sheet covers the inner side of the air outlet from the inside of the gas chamber at room temperature.

[0009] As a further improvement of the above technical solution, the valve body includes a valve body shell, a cavity running through the left and right sides is arranged in the valve body shell, the air inlet is arranged on the valve body shell and is connected with the cavity, the solenoid valve is located in the cavity, and a cover plate is detachably installed on the left and right sides of the valve body shell, the two cover plates close the two ends of the cavity to form the gas cavity, the air outlet is arranged on the cover plate, the heater is arranged on the inner side of the cover plate, and the heat-deformed metal sheet is arranged on the inner side of the cover plate and connected to the heater.

[0010] As a further improvement of the above technical solution, a sealing ring is arranged between the valve body shell and the cover plate.

[0011] The beneficial effects of the present invention are: the on-off of the air inlet is controlled by the solenoid valve, thereby playing a first-level protective temperature control role, and the deformation of the thermally-variable metal sheet is controlled by the heater to control the on-off of the air outlet, thereby playing a second-level protective temperature control role, thereby achieving better temperature control effect and stronger safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further explained below in conjunction with the accompanying drawings and specific implementation methods.

[0013] Figure 1 The working principle of the preferred embodiment of the present invention is as follows;

[0014] Figure 2 It is a schematic diagram of the explosion structure of a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0015] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0016] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0017] In the description of the present invention, the meaning of "several" is one or more, the meaning of "more" is more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of the first and the second, it is only for the purpose of distinguishing the technical features, and it cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features. In the description of the present invention, unless otherwise clearly defined, the terms such as "set", "install", and "connect" should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meaning of the above terms in the present invention in combination with the specific content of the technical solution.

[0018] Reference Figure 1 to Figure 2 , a temperature-controlled safety valve for gas, comprising:

[0019] A valve body is provided with an air inlet 30, a solenoid valve 40 for opening and closing the air inlet 30 is provided on the valve body, at least one air outlet 31 connected with the air inlet 30 is provided on the valve body, a thermally deformable metal sheet 50 is provided on each air outlet 31, and the thermally deformable metal sheet 50 closes the air outlet 31 at normal temperature, and a heater 60 cooperating with the thermally deformable metal sheet 50 is provided in the valve body.

[0020] The present scheme discloses a temperature-controlled safety valve for gas that is used in conjunction with gas-using equipment. Here, an example is given to illustrate the use of the present invention: when in use, the air inlet 30 is connected to the gas, the air outlet 31 is connected to the burner on the gas-using equipment, the solenoid valve 40 is electrically connected to the temperature control switch on the gas-using equipment, and the heater 60 is connected in series with the igniter on the gas-using equipment. When it is just used, the temperature in the equipment must be lower than the specified temperature. At this time, when the temperature control switch is turned on to control the operation of the equipment, the solenoid valve 40 is opened, thereby allowing the gas to enter the air inlet 30. At this time, the heat-deformed metal sheet 50 still closes the air outlet 31, and the igniter heats up to prepare to ignite the gas. When the temperature of the igniter reaches a temperature that can ignite the gas, the heater 60 will also generate high temperature simultaneously, thereby making the heat-deformed metal The metal sheet 50 is deformed, and then the gas outlet 31 is opened. At this time, the gas flows out to the burner and is ignited by the igniter to heat up the equipment. When the temperature exceeds the specified temperature, the solenoid valve 40 closes the air inlet 30 according to the feedback of the temperature control switch. At the same time, the igniter and the heater 60 circuits are also powered off, so that the heat-deformed metal sheet 50 cools and closes the gas outlet 31, and the burner stops burning, thereby reducing the temperature in the equipment. When the temperature in the equipment is lower than the specified value, the solenoid valve 40 opens, and the gas enters. At the same time, the igniter and the heater 60 circuits are connected, so as to repeat the above-mentioned operation of igniting the gas. Through the solenoid valve 40 and the heat-deformed metal sheet 50, the temperature in the equipment is double-controlled and protected, so that the equipment using gas can be better temperature-controlled with higher temperature control accuracy. The example given here is one of the use effects of this solution. In actual applications, other methods can also be used to apply this product.

[0021] For further optimization, in order to enhance the sealing between the thermally deformed metal sheet 50 and the air outlet 31 , it is preferred that a sealing gasket 70 is provided on the valve body between the thermally deformed metal sheet 50 and the air outlet 31 .

[0022] For further optimization, since most gas-using equipment is provided with two burners, it is preferred that there are two gas outlets 31 on the valve body.

[0023] For further optimization, it is preferred that a gas cavity is provided in the valve body, the air inlet 30 and the air outlet 31 are both connected to the gas cavity, the solenoid valve 40 is provided in the gas cavity, the heat-deformed metal sheet 50 is provided in the gas cavity, and the heat-deformed metal sheet 50 covers the inner side of the air outlet 31 from the inside of the gas cavity at room temperature.

[0024] Further optimization, considering the convenience of production and installation, preferably the valve body includes a valve body shell 10, a cavity 11 running through the left and right is provided in the valve body shell 10, the air inlet 30 is provided on the valve body shell 10 and communicates with the cavity 11, the solenoid valve 40 is located in the cavity 11, a cover plate 20 is detachably installed on the left and right sides of the valve body shell 10, two cover plates 20 close the two ends of the cavity 11 to form the gas cavity, the air outlet 31 is provided on the cover plate 20, the heater 60 is provided on the inner side of the cover plate 20, and the thermally deformed metal sheet 50 is provided on the inner side of the cover plate 20 and connected to the heater 60. In order to enhance the sealing effect and prevent gas from overflowing, preferably a sealing ring 71 is provided between the valve body shell 10 and the cover plate 20. In this embodiment, the heat-deformed metal sheet 50 is arranged in the gas chamber to close the gas outlet 31, but it can also be arranged outside the valve body to open and close the gas outlet 31 from the outside, or even inside the gas outlet 31 to open and close the gas outlet 31.

[0025] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or directly or indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A temperature-controlled safety valve for gas, characterized in that: include: A valve body, the valve body comprising a valve body shell (10), a cavity (11) penetrating left and right sides of the valve body shell (10), a cover plate detachably mounted on the left and right sides of the valve body shell (10), the two cover plates closing the two ends of the cavity (11) to form a gas cavity, the valve body shell (10) being provided with an air inlet (30) communicating with the cavity, the cover plate (20) being provided with an air outlet (31) communicating with the gas cavity, the cavity (11) being provided with an electromagnetic valve (40) for opening and closing the air inlet (30), and the air outlet (31) being provided with a thermally deformed metal sheet (50) At room temperature, the heat-deformed metal sheet (50) closes the gas outlet (31); a heater (60) cooperating with the heat-deformed metal sheet (50) is arranged in the valve body; the heater (60) is used to be connected in series with an igniter on the gas equipment; the heat-deformed metal sheet (50) is arranged on the inner side of the cover plate (20) and is connected to the heater (60); when the temperature of the igniter reaches a temperature that can ignite the gas, the heater (60) simultaneously generates high temperature, thereby deforming the heat-deformed metal sheet (50); when the gas temperature exceeds a specified temperature, the solenoid valve (40) closes the gas inlet (30).

2. A temperature-controlled safety valve for gas according to claim 1, characterized in that: The valve body is provided with a sealing gasket (70) located between the thermally deformed metal sheet (50) and the air outlet (31).

3. A temperature-controlled safety valve for gas according to claim 1, characterized in that: There are two air outlets (31) on the valve body.

4. A temperature-controlled safety valve for gas according to claim 1, characterized in that: A sealing ring (71) is provided between the valve body shell (10) and the cover plate (20).

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