JPS602460Y2 - Gas appliance operating device mechanism - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an operating device mechanism for a gas appliance whose combustion is controlled by manual operation, particularly a gas appliance for a bath.

Conventionally, there have been various operating methods for the above-mentioned operating device, but as gas appliances employing a 10-fire safety device equipped with an electromagnetic holding valve that detects pilot combustion and holds the circuit open have become common. , the first 900 rotations of the operating shaft define opening of the electromagnetic holding valve and pilot combustion, and the next 90° rotation defines combustion of the main burner.

Then, during the first 90° rotation, the operating shaft is pushed down, and with this stroke, the electromagnetic holding valve is forced open, and a thermoelectromotive force is generated after the pilot ignites.

After the solenoid valve is held, the operating shaft is raised to release the pressure on the solenoid holding valve.

has been widely used due to its simple mechanism and reliable operation.

However, when remotely controlling a bath kettle installed outdoors from inside the bathroom using a wire, it is difficult to provide the remote control with a one-press function. It is required to operate and control gas appliances only by rotating the operating shaft.

This device can sequentially control the opening of the electromagnetic holding valve, the pilot ignition, the release of the pressure on the electromagnetic holding valve, and the combustion of the main burner by only rotating the electromagnetic holding valve without requiring push operations. It is an object of the present invention to provide an operating device mechanism for a gas appliance that can prevent erroneous operations that may inadvertently extinguish even the pilot flame.

In order to achieve this object, this invention has a pin 11 embedded in the operating shaft in the operating device mechanism of the gas appliance, and an upper slope 201 on which the head of the pin 11 slides in contact within the ignition stroke 9' and an extinguishing stroke 90°. A substantially parallelogram-shaped inclined cam hill 203 forming a lower slope 202 in sliding contact with the lower slope 202 , and a slanted cam hill 203 located about half a step higher than the inclined cam hill 203 and opposite to the terminal end of the upper slope 201 to engage the pin 11 . The distance 2 is such that the pin 11 can pass through the substantially rectangular cam hill 205 that forms the stop portion 204.
A pair of cylindrical vertical movement control cams 20 each having a shape of 07 and arranged axially symmetrically on the inner circumferential surface 206 are provided in the device housing 91 so as to be movable up and down without turning. It is characterized by being constructed so that the electromagnetic holding valve 31 is pressed open by movement, and the embodiments shown in the drawings will be specifically explained below.

In the operating device shown in the drawing, the electromagnetic holding valve 31, purge valve 41, pilot valve 51, and main valve 61 of the starter safety device 30 are connected to the respective shafts 32, 42, 5 as valve mechanisms for gas flow control.
Spring 34, 44, 5 supported by bearing/valve seat 33, 43, 53, 63 via 2, 62, and bored in each valve.
4 and 64 are always biased in the valve closing direction.

The hose end 94 is screwed and assembled to the solenoid valve housing 93, and the solenoid valve housing 93. A pilot housing 95 and a main valve housing 96 each house a valve mechanism and are assembled to the device housing 91, and when the type of gas used is city gas, a pressure regulator 70 is provided and a pressure regulator housing 97 is installed. is assembled into the main valve housing 96, and the piezoelectric igniter 80 is mounted on the device housing 91.

The igniter shaft 81 and the camshaft 10 integrally connected to the igniter shaft 81 form an operating shaft for controlling the valve mechanism, and the camshaft 20 has a space between the lower end 13 and the bottom cover 92. It is rotatably supported by a pair of upper and lower bearings 9B and 98, and gas-sealed by a hollow annular rubber seal 99, and the pilot valve 51 and main valve 61 are opened and closed by driving the shafts 52 and 62. A controlling main cam 12 is tightly fitted onto the camshaft 10.

A pin 11 is installed in the opening hole in the upper part of the camshaft 10,
The pin 11 is inserted into a pair of vertically elongated holes bored in the peripheral wall of the cylindrical sub-cam 21 having a cam surface that drives the electromagnetic valve shaft 32 when descending.
is inserted into the sub cam 21, and the sub cam 21 is attached to the cam shaft 10 so as to be movable up and down.

A cylindrical vertical movement control cam 20 is provided in the device housing 91 so that it is prevented from rotating and is only allowed to move up and down. The upper slope 201 where the head of the pin 11 comes into sliding contact and the extinguishing stroke 90
A substantially parallelogram inclined cam hill 203 forming a sliding contact with a lower slope 202 within 10° and located approximately half a step higher than the inclined cam hill 203 locks the pin 11 at the 90° position of the ignition stroke. A substantially rectangular cam hill 205 formed with the locking portion 204 facing the terminal end of the upper slope 201 is connected to both cam hills 20.
It is possible for pin 11 to pass through between 3.205 and 2.07.
They are arranged in pairs axially symmetrically.

The vertical movement control cam 20 is engaged with the sub-cam 21 so as to move up and down simultaneously, and the spring 2 between the main cam 12 and the sub-cam 21
2, and is supported by a spring 23 between the vertical motion control cam 20 and the device housing 91.

Next, the operation of this operating device will be explained.

At the stop position of the operating device, the vertical motion control cam 20 and the secondary cam 21 are located high, and the pin 11 is located at the lower end of the elongated hole of the secondary cam 21 and at the starting point of the upper slope 201 of the inclined cam hill 203. .

As a result, when the camshaft 10 is rotated counterclockwise with the igniter shaft 81, the pin 11 slides on the upper slope 201 and climbs, so the vertical movement control cam 20 descends and lowers the sub-cam 21, and as the sub-cam 21 descends, the It rotates together with the camshaft 10 to open the electromagnetic holding valve 31 and the purge valve 41, and combustible gas flows into the device casing 91 while pushing out air from the purge valve 41 (
(See Figure 3).

At the same time, the main cam 12 opens the pilot valve 51, and the igniter 80 operates to emit a spark from the ignition plug 89, igniting the pilot burner 59 and also incinerating the gas flowing out from the purge pipe 49.

The pin 11 is spaced 20 degrees apart due to the rotational torque applied to the pin 11.
7 and at the 90' position, the locking part 204 of the cam hill 205
Since the vertical motion control cam 20 is restrained at the lowest position, the electromagnetic holding valve 31 is pressed and restrained by the sub-cam 21.

After the electromagnetic holding valve 31 is attracted, when the camshaft 10 is slightly reversely rotated using the igniter shaft 81 to remove the rotational force, the pin 11 reaches the interval 207 between the inclined cam hill 203 and the cam hill 205, and the spring 22 The secondary cam 21 and the vertical motion control cam 20 rise due to the elastic force of Closing of valve 31 is not prevented.

As a result, when the camshaft 10 is further rotated to the left, the main cam 12 opens the main valve 61, and during this time, the pin 11 only runs horizontally on the lower stage of the cam hill 205, so the sub cam 21 does not perform any operation.

To reach the stop position through pilot combustion, the pin 11 contacts the lower slope 202 of the inclined cam hill 203, pushes up the vertical movement control cam 20 against the spring 23, and returns to the starting point.

The characteristic features of this invention are as follows.

First, the operating device mechanism of this invention can be operated without requiring a single push due to the engagement relationship between the pin 11 implanted in the operating shaft and the vertical movement control cam 20 provided inside the device housing 91. It is possible to sequentially control the pressing opening of the electromagnetic holding valve, pilot ignition, releasing the pressing of the electromagnetic holding valve, and combustion of the main burner by simply rotating the shaft, making it suitable for outdoor installations that require wire-driven remote control. It is suitable for use in gas appliances.

In addition, pin 1 is used not only in the ignition process but also in the extinguishing process.
1 comes into contact with the inclined cam hill 203 and slides on the lower slope 202, so the rotating torque increases and the operator can confirm the position of the pilot flame.In particular, by remote control, 10 flames = combustion operation. Even in the case of repeated reheating operations, it is possible to prevent erroneous operations that inadvertently extinguish even the starter flame.

In addition, since it functions only with the pin 11 and the vertical movement control cam 20, it can be housed inside the device housing, making it compact.
Furthermore, as shown in the figure, a vertical movement control cam 2 is used for gas appliances in which an electromagnetic holding valve 31 is installed in the radial direction with respect to the operating shaft.
A sub-cam 21 that utilizes the descending motion of 0 is required, but when the electromagnetic holding valve is installed in the axial direction, the vertical movement control cam 20 can directly push open the electromagnetic holding valve and release the restraint. It is a gas appliance operating device mechanism that can perform various functions and can be applied in various ways depending on the conditions of the device.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, with Figure 1 being a front sectional view and Figure 2 being a front sectional view.
The figure is a side sectional view, Figure 3 is a plan view at the 90° ignition stroke position in the cross section taken along line X-X in Figure 1, Figure 4 is a cam development view showing the relationship between the vertical movement control cam and the pin, and Figure 5. is a layout diagram of the purge pilot system. 11... Zen, 20... Vertical movement control cam, 201... Upper slope, 202... Lower slope, 203... Inclined cam hill, 204. ...Locking portion, 205...Cam hill, 206...Inner peripheral surface, 207...Interval.

Claims (1)

[Scope of utility model registration request] In the operating device mechanism of a gas appliance, a pin 11 is embedded in the operating shaft in which a 90° rotation of the operating shaft specifies opening of an electromagnetic holding valve and pilot combustion, and a subsequent 90° rotation regulates thermal firing of the main burner. ,
Upper slope 20 on which the head of pin 11 slides within 90° of the ignition process
1 and a lower slope 202 that is in sliding contact with each other within 90° of the extinguishing process; a substantially parallelogram-shaped inclined cam hill 203 that is located about half a step higher than the inclined cam hill 203;
A substantially rectangular cam hill 205 with a locking portion 204 of the pin 11 formed opposite to the terminal end of the pin 11 is formed with an interval 207 that allows the pin 11 to pass through, and each pair is axially symmetrical about the inner circumferential surface 206. A cylindrical vertical movement control cam 20 is provided inside the device housing 91 so as to be able to move up and down without turning, and the electromagnetic holding valve 31 is pressed to open by the downward movement of the vertical movement control cam 20. Features a gas appliance operating device mechanism.