JPH038852Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an on-off valve, and particularly to a gas flow rate regulating valve installed between a gas appliance and a gas appliance.

[Conventional technology]

Conventionally, when using gas appliances to heat fried foods such as tempura and fries, the oil temperature is adjusted by occasionally reducing the amount of gas supplied from a steady amount to a minute amount to prevent the temperature of the frying oil from becoming excessively high. is required to do so. The appropriate oil temperature for frying tempura is approximately 180℃, and smoke will be produced at approximately 260℃.

Conventionally, a gas flow rate adjustment valve was installed between the gas source and the gas appliance to manually switch between a steady amount and a minute amount, but it was difficult to adjust the amount to a predetermined minute amount. Therefore, a gas flow rate adjustment valve has been proposed in which a bypass flow path is formed separately from the main gas flow path so that even when the main flow path is closed, a constant, minute amount of gas flows through the bypass flow path. .

[Problem that the invention attempts to solve]

However, such gas flow rate regulating valves have the disadvantage that they not only have a complicated structure and are difficult to process, but also are bulky.

The purpose of this invention is to provide a gas flow rate regulating valve that is installed between the gas appliance and the gas appliance, and is designed to supply a constant amount of gas to the gas appliance at all times when the gas appliance is used for heating fried foods. However, it is an object of the present invention to provide a gas flow rate adjustment valve that can automatically switch the gas supply amount to a predetermined minute amount when the temperature of frying oil becomes abnormally (excessively) high.

[Means for solving problems]

According to the present invention, the above purpose is a gas flow rate regulating valve that is installed between the gas appliance and the gas appliance and automatically switches the gas flow rate sent to the gas appliance from a steady amount to a very small amount. A cylindrical valve box having a suction part and a discharge part with a communication flow path formed between the two, and a valve formed in the valve box having a conical valve seat on the discharge part side. a chamber, and a ferromagnetic ball valve movably housed in the valve chamber, and a conical surface of the valve seat is provided with an upper part of the ball valve at a position where the ball valve is seated with respect to the valve seat. A small flow path in the form of a slot or recess is formed that communicates with each other on the downstream side, and an annular permanent magnet is provided on the outer periphery of the valve box in the middle part of the valve chamber, and an annular permanent magnet is provided on the outer periphery of the valve box on the downstream side of the valve seat. and an electromagnetic circuit that activates the electromagnetic coil when abnormally high temperature of the gas appliance is detected. According to
The ball valve is seated on the valve seat against the attraction force of the permanent magnet, and the gas supply amount is automatically reduced to a predetermined minute amount through the small flow path on the valve seat regulated by the seated ball valve. This is achieved by a gas flow rate regulating valve that switches to .

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

The valve box 1 is formed by screwing, for example, a suction section 2 and a discharge section 3, each having a flow path therein, with their axes aligned. The suction part 2 and the discharge part 3 are made of brass.
It is made of a non-magnetic material such as SUS, and has a valve chamber 4 formed in the middle, and a communication flow path in the axial direction via the large diameter valve chamber 4. A conical valve seat 5 is formed on the downstream side of the valve chamber 4 so as to face the inside of the valve chamber.

A ferromagnetic ball valve 6 is accommodated within the valve chamber 4 .
Since the diameter of the ball valve 6 is larger than the above-mentioned flow path diameter and smaller than the inner diameter of the valve chamber 4, the ball valve 6 can freely move within the valve chamber 4. A gas tank 7 is connected upstream of the suction section 2, and a gas appliance (not shown) is connected downstream of the discharge section 3, respectively. The conical surface of the valve seat 5 is provided with at least one small channel 8 in the form of a slot or a concave hole, and when the ball valve 6 is seated on the valve seat 5, the small channel 8 allows the valve to flow through the valve seat 5. The upstream side and downstream side of the ball valve 6 are formed to communicate with each other. The flow path is not completely blocked due to the seating of the ball valve 6.

An annular electromagnetic coil 9 is fixed to the outer periphery of the valve body 1 downstream of the valve seat 5. This electromagnetic coil 9 is connected to an electromagnetic circuit including a known temperature sensor and the like for detecting abnormal temperatures near a gas appliance (not shown). Further, an annular permanent magnet 10 is fixed to the outer periphery of the valve body 1 in the middle part of the valve chamber.

FIG. 3 shows an embodiment in which a device stopper 12 is connected by a hose end connection adapter 11.

Next, the operation of the present invention will be explained.

B Under normal conditions, the attraction force of the permanent magnet 10 causes the ball valve 6 to
is controlled and stationary at a fixed position, that is, an intermediate position, as shown by the broken line in the valve chamber 4, and the inner diameter of the valve chamber 4 is sufficiently larger than the diameter of the ball valve 6. Let the gas flow.

(b) When an electromagnetic circuit that detects an abnormally high temperature near the gas appliance sends a current to the electromagnetic coil 9, the attractive force of the electromagnetic coil 9 overcomes the attractive force of the permanent magnet 10, and the ball valve 6 is moved to the valve seat 5. It is adsorbed.

C. As mentioned above, even when the ball valve 6 is seated, the ball valve 6
Since the upstream and downstream sides are connected through a small flow path 8, a constant minute amount of gas flows.

D. When the current to the electromagnetic coil 9 is cut off, the ball valve 6 is attracted by the permanent magnet 10 and returns to its initial position, allowing a steady amount of gas to flow.

To stop the gas flow, operate the appliance plug 12 connected with the screw connection source 7 or the hose end connection 11 adapter to completely shut it off.

[Effect of idea]

As mentioned above, this invention solves the minute adjustment of the gas flow rate adjustment valve by simply installing a permanent magnet and an electromagnetic coil on the outer periphery of the valve chamber and drilling a small channel on the conical surface of the valve seat. It has a simpler structure and is easier to process than the bypass type, and the regulating valve does not have to be bulky, and it is used to detect abnormal temperatures near permanent magnets, electromagnetic coils, and gas appliances to control the electromagnetic coils. Since an electromagnetic circuit including a temperature sensor, etc. is connected to the electromagnetic coil, the ball valve is normally attracted by the permanent magnet and remains in the middle of the valve chamber, allowing a steady flow of gas to flow. When an abnormally high temperature near the device is detected by a temperature sensor, etc., the electromagnetic circuit described above energizes the electromagnetic coil, thereby seating the ball valve on the valve seat and causing the small flow path between the ball valve and the valve seat to flow. It is possible to automatically switch to a regulated, very small amount of gas supply. Therefore, it has the advantage of being able to respond quickly even in emergency situations.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the gas flow rate regulating valve of the present invention, Fig. 2 is a front view taken along the - line in Fig. 1, and Fig. 3 is a sectional view of the gas flow rate regulating valve of the present invention.
The figure is a sectional view showing another embodiment. 1...Valve box, 2...Suction part, 3...Discharge part, 4
... Valve chamber, 5 ... Valve seat, 6 ... Ball valve, 7 ... Motokoku, 8 ... Small flow path, 9 ... Electromagnetic coil, 10 ...
...Permanent magnet, 11...Adapter, 12...Appliance plug.

Claims (1)

[Scope of utility model registration request] It is installed between the original gas appliance and the gas appliance.
A gas flow rate regulating valve that automatically switches the flow rate of gas sent to a gas appliance from a steady amount to a very small amount, and has a suction part 2 and a discharge part 3 at both ends, and a communication flow path is formed between the two. A valve box 1 having a shape of a shape, a valve chamber 4 having a conical valve seat 5 on the discharge side and formed in the valve box 1, and a ferromagnetic ball movably housed in the valve chamber. The conical surface of the valve seat 5 has a small channel 8 in the form of a slot or recess that communicates the upstream and downstream sides of the ball valve with each other at the position where the ball valve is seated with respect to the valve seat. An annular permanent magnet 10 is formed on the outer periphery of the valve body 1 in the middle part of the valve chamber 4, and an annular electromagnetic coil 9 is provided on the outer periphery of the valve body 1 on the downstream side of the valve seat 5. , an electromagnetic circuit that detects an abnormally high temperature of the gas appliance and activates the electromagnetic coil 9, and when the abnormally high temperature of the gas appliance is detected, the permanent magnet 10 is activated by the action of the activated electromagnetic coil 9. The ball valve 6 is seated on the valve seat 5 against the suction force of the ball valve, and the gas supply amount is automatically reduced to a predetermined minute amount through the small flow path 8 on the valve seat regulated by the seated ball valve. A gas flow rate adjustment valve that can be switched automatically.