KR200152593Y1 - Timer - Google Patents

Abstract

The present invention relates to a timer for controlling the valve of the gas range.

Conventional mechanical timers are the same as those used in general switches, and because they are exposed to the air in each contact section, there is a risk of malfunction due to deformation of the contact section. In particular, when used for a long period of time, the resistance of the contact portion rises, so that electromotive force generated in the thermocouple cannot be accurately transmitted to the electronic valve, and thus is rarely used in practice, and the electronic timer is more stable than the mechanical timer. Although operating, the number of component parts increases the production cost of the product itself, as well as the failure rate of each device has a problem that the reliability is lowered.

In the present invention, in the construction of the mechanical timer 40, the contact timer is very small in contact with the mechanical timer 40 and there is no possibility of malfunction. Of course, it is a very useful design, such as to prevent the rise of the production cost of the product.

Description

Valve control timer for gas range

1 is a block diagram showing a connection state of the subject innovation timer.

Figure 2 is a sectional view of the main portion of the subject innovation timer.

Figure 3 is a front view of the gas range of one embodiment showing a state in which the timer of the present invention is installed.

Figure 4 is a partial cross-sectional plan view of a gas range of an embodiment showing a state in which the timer of the present invention is installed.

Figure 5 is a main sectional view of the main portion of the gas stove of an embodiment showing a state in which the timer of the present invention is installed.

Figure 6 is a front view of the gas range of another embodiment showing a state in which the timer of the present invention is installed.

Figure 7 is a partial cross-sectional plan view of a gas stove of another embodiment showing a state in which the timer of the present invention is installed.

8 is a cross-sectional plan view of a main portion of a gas range of another embodiment showing a state where a timer of the present invention is installed.

9 is a partially enlarged cross-sectional view of another embodiment showing a state in which the timer of the present invention is installed.

* Explanation of symbols for main parts of the drawings

10: valve 12, 42, shaft

13, 43 knob 20: electronic valve

30: thermocouple 40: timer

44: proximity switch 45: elastic operation plate

46: permanent magnet 47: knob drive gear

48: operating gear 49: bracket

50: gas range 51: front panel

52: burner 441, 442: contact

443: glass tube

[Technical field to which the design belongs]

The present invention relates to a timer for controlling the valve of the gas range.

More specifically, the contact switch of the timer, which is installed between the solenoid valve and the thermocouple of the valve that controls the gas supply and allows the user to arbitrarily set the cooking time using the gas range, has very small contact resistance and no fear of malfunction. The present invention relates to a timer for controlling a valve of a gas range in which several proximity switches are installed in parallel to operate safely for a long time.

[Prior art]

Most conventional gas range valves for controlling the gas supplied to the gas equipment is ignited and extinguished by a button or knob, and the lever extended to the outside of the main body controls the amount of gas supply by a user's operation. This is supposed to be done.

In addition, the valve is provided with an electromagnetic valve, which is forcibly opened by the operation of a button or a knob during ignition, and after the ignition is completed, a predetermined electromotive force (that is, voltage) is output from a thermocouple installed around the burner. In this case, the electron valve is kept open by this voltage, and the gas supply to the burner is continued.

[Technical Challenges to be Done]

By the way, in this configuration, if the valve is adjusted to have a user's desired firepower through a button or knob, the firepower is maintained as it is and the fire is not maintained even if the gas is supplied for a long time.

In other words, if you set the valve opening and closing amount of the gas range at any thermal power to allow the food to be heated, and then perform other work, the food may be burned if the food is not digested even though the cooking is completed. Nevertheless, since the automatic fire extinguishing function is not provided after a predetermined time, the user was watching the cooking condition in the vicinity of the gas range and had to perform a fire extinguishing operation.

Therefore, recently, a well-known mechanical timer or an electronic timer is generally installed between the valve's electronic valve and the thermocouple so that the user can set the cooking time for a certain food, even if the user sees other things. A technology has been developed to automatically shut off the electromotive force of the thermocouple applied to the electromagnetic valve when the timer is off.

However, in the above-described mechanical timer, the contact is the same as that used in a general switch, and since each contact part is exposed to air, there is a risk of malfunction due to deformation of the contact part, and a spark may be generated when the contact is opened or closed. There is a risk of fire, especially when used for a long time, the resistance of the contact portion rises, there is a problem such that the electromotive force is not accurately transmitted to the electromagnetic valve in the thermocouple is practically rarely used.

In addition, the electronic timer operates more stably than the mechanical timer, but the production cost of the product itself increases due to the large number of components, as well as the failure rate of each device has a problem that the reliability is lowered.

[Purpose of designation]

The present invention has been made to solve the above problems, it is installed between the electronic valve and the thermocouple of the valve to control the amount of gas supplied to the burner of the gas range, the user can arbitrarily cook time using the gas range It is possible to maintain stability even if used for a long time by installing several proximity switches (ie reed switches) in parallel with very small contact resistance and no risk of malfunction. It is to provide a timer for controlling the valve of the gas range that can prevent the production cost rises.

[Composition of design]

The object of the present invention is that the gas supply passage is forcibly opened when the shaft is retracted by the user's pressing of the knob which is installed at the rear part of the valve body, and the ignition is performed from the thermocouple installed at the burner side due to ignition. In the case of the electromotive force is formed between the electronic valve to maintain the open state of the gas supply path, and the mechanical timer is installed between the thermocouple to stop the operation of the electronic valve when the cooking time arbitrarily set by the user, the contact resistance to the mechanical timer This can be achieved by installing several very small proximity switches in parallel.

At this time, the proximity switch of the mechanical timer is filled with an inert gas inside the glass tube in which the two contacts are built, and a permanent magnet is installed at the free end of the elastic working plate.

[Operation of design]

According to the present invention described above, if the user sets the cooking time for a predetermined food through a timer after igniting the gas range and appropriately adjusting the fire power, the timer turns off after the elapsed time. Since the electromotive force of the applied thermocouple is automatically cut off and the electronic valve is closed, the user of the gas range can cook in a desired state while looking at other work. In this case, the contact point switch of the timer is composed of several proximity switches, so even if it is used for a long time, Stable operation can improve the reliability of the product, as well as significantly reduce the production cost of the product by the digital timer method.

EXAMPLE

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing the connection state of the subject innovation timer, Figure 2 is a sectional view showing the main part of the subject innovation timer, it is installed on the rear of the main body 11 of the valve 10 to be operated by the user When the shaft 12 is retracted by the pressing operation of the knob 13, the gas supply path is forcibly opened and when a predetermined electromotive force is generated from the thermocouple 30 installed on the burner 52 side due to ignition, In the configuration of the mechanical timer 40 is installed between the electronic valve 20 to maintain the open state, and the thermocouple 30 to block the operation of the electronic valve 20 when the cooking time set by the user, the mechanical It is a basic feature that the proximity switch 44 of several pieces (in this invention, four are provided) having a very small contact resistance is provided in parallel with the timer 40.

At this time, the proximity switch 44 of the mechanical timer 40 is filled with an inert gas inside the glass tube 443 in which the two contacts 441 and 442 are embedded, and the free end of the elastic operation plate 45 is permanent. The magnet 46 is provided.

3 to 5 illustrate an embodiment in which the mechanical timer 40 and the valve 10 are separated from each other and installed on the front panel 51 of the gas range 50. And the knob 43 of the mechanical timer 40 can be operated separately, respectively, so that gas dot / extinguishing can be performed using only the knob of the valve 10 as in the related art, and the knob of the valve 10 ( 13) after the ignition is carried out by operating the knob of the mechanical timer 40 to the desired time elapsed the electronic valve 20 is closed so that the fire can be made.

In this embodiment, the front panel of the gas range 50 in the state in which the main body 41 of the mechanical timer 40 is connected to the main body 11 of the valve 10 through the bracket 49. (51) It is fixed to the rear side, and the knobs (13, 43) are provided on each shaft (12, 42) protruding outward through the through-hole of the front panel 51 to operate from the outside of the gas range (50). In the vicinity of the knob 43 of the mechanical timer 40 (ie, on the front panel 51), letters, scales, and numbers indicating the on / off state and operating time of the timer are printed.

6 to 9 show another embodiment in which the mechanical timer 40 and the valve 10 are integrally formed and installed on the front panel 51 of the gas range 50. Point / digestion may be performed using only the knob 13 of the valve 10, or after operating the knob 13 of the valve 10 to perform ignition and then operating the knob 43 of the mechanical timer 40. When the desired time has elapsed, the electronic stool 20 is closed so that digestion can be made.

In such an embodiment, the knob drive gear 47 having a predetermined number of teeth is held on the shaft 12 of the valve 10, and the timer knob 43 is disposed outside the knob 13 of the valve 10. The timer knob 43 is fixed to the knob drive gear 47, and one side of the bracket 49 is fixed to the main body 11 of the valve 10, and the other side of the bracket 49 is disposed on the timer knob 43. Fixing the main body of the mechanical timer 40, the shaft 42 of the mechanical timer 40 is provided with an operating gear 48 for engaging the knob drive gear 47, the knob of the mechanical timer (40) ( 43) Letters, scales and numbers are printed in the vicinity (i.e. on the front panel 51) indicating the on / off status and operating time of the timer.

The present invention having such a configuration, first, the electromagnetic valve 20 installed in the rear portion of the valve 10 main body 11 when the user presses the knob 13 to ignite the gas range 50, the shaft ( 12, the packing is forcibly pressed to open the gas supply path, and after the ignition occurs in the burner 52, when a predetermined electromotive force is generated from the thermocouple 30 installed around the burner, the shaft 12 Even if the) is reversed, it keeps the gas supply path open.

In addition, since the thermocouple 30 installed at one side of the burner 52 generates an electromotive force corresponding to the increase in temperature, the electromagnetic valve 20 is driven by the electromotive force generated in the thermocouple 30 to allow the valve 10 to be opened. Gas supply path is opened.

Of course, if the gas burnout in the burner 52 is not made (that is, when the ignition has failed or the fire is made by the user's knob operation, etc.), the electromotive force is not generated in the thermocouple 30, so that the electromagnetic valve 20 The packing of is to close the gas supply path of the valve (10).

On the other hand, by installing a mechanical timer 40 between the electromagnetic valve 20 and the thermocouple, the electromotive force generated in the thermocouple 30 is transmitted to the electromagnetic valve 20 through the contact switch of the timer 40.

Therefore, when the user turns the knob 43 of the mechanical timer 40 to set the cooking time arbitrarily, the electromotive force generated by the thermocouple 30 is the contact switch of the timer 40 while the mechanical timer 40 is operating. When the set time of the timer 40 is completed and the contact switch is turned off, the electromotive force supply to the electromagnetic valve 20 is cut off, so that the gas supply path of the valve 10 is shielded, thereby automatically extinguishing. You lose.

Of course, when the knob 43 of the mechanical timer 40 is placed in the on position, the point / digestion is made only by the operation of the knob 13 of the valve 10 as in the gas range where the timer is not attached.

On the other hand, in the above, when the contact switch of the mechanical timer 40 has a predetermined resistance value or more, the electromotive force generated from the thermocouple 30 is mostly consumed by the resistance component of the contact switch, and the electronic valve 20 is very weak. Since the electronic valve 20 may not be driven at all, the present invention prevents this by installing four proximity switches 44 having very small contact resistances in parallel instead of the contact switch.

That is, four proximity switches 44 filled with an inert gas are installed in the bottom of the elastic operation plate 45 of the mechanical timer 40 in parallel in the glass tube 443 having two contacts 441 and 442. Each terminal is connected between the electromagnetic valve 20 and the thermocouple 30, the permanent magnet 46 is provided on the free end of the elastic actuating plate 45, the set time of the mechanical timer 40 When the permanent magnet 46 installed at the free end of the elastic actuating plate 45 is separated from the two contacts 441 and 442 of the proximity switch 44 by more than a predetermined distance, the proximity switches in the short-circuited state are mutually shorted. The contacts 441 and 442 of 44 are spaced apart from each other so that the electron valve 20 and the thermocouple 30 are disconnected.

In other words, when the mechanical timer 40 is in the on state or in operation within the set time, the permanent magnet 46 installed at the free end of the elastic actuating plate 45 is connected to the two contacts 441 and 442 of the proximity switch 44. ), So that the electromotive force generated in the thermocouple 30 is transmitted to the electromagnetic valve 20 as it is, and the gas supply to the burner 52 is maintained. When the set time of 40 is completed and the permanent magnet 46 installed at the free end of the elastic operation plate 45 is separated from the two contacts 441 and 442 of the proximity switch 44, the proximity switch 44 Since the two contacts 441 and 442 are spaced apart from each other, the electronic valve 20 and the thermocouple 30 are disconnected and the gas supply path of the valve 10 is blocked by the packing of the electromagnetic valve 20.

At this time, since the two contacts 441 and 442 of the proximity switch 44 are in the glass tube 443 filled with an inert gas, there is no fear of sparks, and a fire may be caused, as well as deformation of the contact itself. There is no risk of malfunction caused by the proximity switch, and the resistance value of each proximity switch 44 itself remains 100 mΩ or less even after long-term use, so that the electromotive force generated in the thermocouple 30 is not lost by the proximity switch 44 and the electromagnetic valve ( It is delivered as it is, and it can maintain stability even if used for a long time.

On the other hand, the operation temperature of the proximity switch 44 is -40 ℃ ~ 125 ℃, the storage temperature is -50 ℃ ~ 155 ℃, the maximum opening and closing voltage was manufactured to be 100VDA 125VAC-RMS.

Of course, since the four proximity switches 44 having a resistance value of 100 mΩ or less are installed in parallel, the overall resistance value is very small so that the electromotive force generated in the thermocouple 30 is hardly lost by the proximity switch 44. It is delivered to the electron valve 20 as it is.

In addition, the mechanical timer 40 may be installed in the gas range 50 in a state in which the mechanical timer 40 is separated from each other, or may be integrally overlapped with the valve 10 and installed in the gas range 50.

In the former case, as shown in FIGS. 3 to 5, the main body 41 of the mechanical timer 40 is connected to the main body 11 of the valve 10 through the bracket 49, respectively. To the rear of the front panel 51 of the gas range 50, and different knobs 13 and 43 are installed on the shafts 12 and 42, which protrude outwards through the through holes of the front panel 51. The two knobs (13, 43) can be selectively operated from the outside of the gas range (50), but the character indicating the on / off state and operating time of the timer around the knob (43) of the mechanical timer (40) You can print the scales and numbers.

In the latter case, as shown in Figs. 6 to 9, the knob drive gear 47 having a predetermined number of teeth is held on the shaft 12 of the valve 10, and the knob of the valve 10 is held. (13) Outside the timer knob 43, the timer knob 43 is fixed to the knob drive gear 47, the valve 10, the main body 11, one side of the bracket (49) To the other side of the bracket 49, and to the mechanical timer 40 fixed to the main body, and the operation gear 48 to be engaged with the knob drive gear 47 to the shaft 42 of the mechanical timer 40. Install, but the letters around the knob 43 of the mechanical timer 40 to print the letters and scales and numbers indicating the on / off state and operating time of the timer.

In this case, when the timer knob 43 installed outside the knob 13 of the valve 10 rotates, the operating gear 48 meshed with the knob driving gear 47 held on the shaft 12 of the valve 10 is rotated. Since the shaft 42 of the timer 40 is rotated, a desired time can be set, and when the shaft 42 is rotated due to the operation of the timer 40, the timer knob 43 is provided through the operating gear 48. Since it rotates the timer knob 43 installed to the outside of the knob 13 of the valve 10 is also rotated.

[Effect of design]

As described above, according to the present invention, a mechanical type is installed between an electronic valve and a thermocouple of a valve that controls a supply amount of gas supplied to a burner of a gas range so that a user can arbitrarily set a cooking time using the gas range. Instead of the timer's contact switch, several proximity switches (i.e. reed switches) with very small contact resistance and no risk of malfunction are installed in parallel, so that stability can be maintained even after long-term use. It is a very useful design such as to prevent the rise.

Claims (4)

When the shaft 12 is retracted by the pressing operation of the knob 13 operated by the user, which is installed at the rear part of the main body 11 of the valve 10, the gas supply path is forcibly opened and the burner 52 side is caused by the ignition. When a predetermined electromotive force is generated from the thermocouple 30 installed in the electronic valve 20 to maintain the open state of the gas supply path, and installed between the thermocouple 30, the electronic valve 20 when the cooking time arbitrarily set by the user In configuring the mechanical timer 40 to block the drive of the), a timer for controlling the valve of the gas range, characterized in that a plurality of proximity switches 44 having a very small contact resistance are installed in parallel in the mechanical timer 40. . The proximity switch 44 of the mechanical timer 40 is filled with an inert gas in the glass tube 443 in which the two contacts 441 and 442 are embedded, and the elastic operation plate 45 Timer valve control timer, characterized in that a permanent magnet 46 is installed at the free end. The rear of the front panel 51 of the gas range 50 by connecting the main body 41 of the mechanical timer 40 to the main body 11 of the valve 10 via the bracket 49. Fixed to the shafts 41 and 42 protruding to the outside through the through-holes of the front panel 51 so that knobs 13 and 43 may be installed to operate outside the gas range 50, Timer valve control timer, characterized in that printed letters, scales and numbers indicating the on / off state and operating time of the timer around the knob 43 of the mechanical timer (40). 2. The timer knob 43 according to claim 1, wherein the knob drive gear 47 having a predetermined number of teeth is held on the shaft 12 of the valve 10, and the timer knob 43 is disposed outside the knob 13 of the valve 10. While installing the timer knob 43 is fixed to the knob drive gear 47, the valve 10, the main body 11 to the fixed side of the bracket (49), the other of the bracket (49) The side of the mechanical timer (40) is fixed to the body, the shaft 42 of the mechanical timer (40) is provided with an operating gear (48) engaging with the knob drive gear 47, the knob of the mechanical timer (40) (43) Timer valve control timer, characterized in that printed letters, scales and numbers indicating the on / off state and operating time of the timer around.