SU523386A1 - Pneumatic control device for domestic gas appliances - Google Patents

Description

The invention relates to the field of automation of gas heat engineering objects and can be applied in the gas industry.

A PlaBecTHO gas instrumentation device containing an actuator valve, flame sensors, temperatures, a memory unit, relays, gas burners, and an ignition coil.

However, this device is difficult but the design does not provide the possibility of automatic operation.

The closest analogue of the invention is a device containing flame sensors and thrusters, chokes and an inverter relay, the supermembrane cavity of which is connected to the temperature sensor, and the output is connected to the supermembrane actuator valve, the output is connected to the inlet of the gas burner and through the first choke to the pilot burner channel and the output of the memory unit. The input of the device is connected to the inputs of the actuating valve, the relay-nn-pump and the memory.

Such a device has a limited scope due to the complexity of its design.

The purpose of the invention is to reinforce the device.

This is achieved by introducing a prohibition block into the device, on the membrane of which a load is placed, the Start and Stop buttons. The submembrane cavity of the memory block is connected to the exit of the pneumo-button Start and through the second choke installed in the prohibition block, with the non-membrane cavity of the ban block, which is connected to the padmembrane valve cavity through the third choke in the actuator valve body. The submembrane block of the prohibition block is connected to the valve outlet through the fourth choke, made in the actuator valve body, and the padmembrane 1 to the memory block is connected via the fifth choke to the supramembrane cavity of the inverter, gauge, flame, and the Stop button.

The drawing shows a diagram of the proposed device.

It contains an actuating valve with a membrane 1 with a rigid center in the form of a load, submembrane 2 and supramembrane 3 cavities; relay-inverter with a membrane 4, an overmembrane 5 and a submembrane 6 cavities, a drainage hole 7, a two-way valve 8 nozzles 9 and JO, a spring 11 placed in the under-sonnel cavity 12; a memory unit with a membrane 13, submembrane 14 and cadmembrane 15 cavities, gate 16 of nozzle 17, located in cavity 18, joint 1 case: With over membrane membrane through the hydraulic choke 19 in the form of a gap between) a hole in the body and a rod; two pairs of contacts 20 n 21 with a common contact plate 22 second contact plates 23 and 24; blocking device with a diaphragm 25 with a rigid center in the form of a cargo, a nozzle 26 with a hydraulic throttle 27, a overmembrane 2S and a submembrane 29 scum, the Executive valve contains a channel 30, a throttle 3} with a channel 32. A channel 33 with a throttle 34 is connected to the output of the actuating valve , channel 35 - with a flame sensor with a nozzle 36 and a bimetallic damper 37 and ti with a nozzle 38 and a bimetallic damper 39, channel 40 - with a temperature sensor with a nozzle 41 and a bimetallic damper 42 and a hydraulic throttle 43. The start button 44 has a nozzle 45, and the button “Stop 46 - with lo 47. Executive klalan provided with throttle 48. The hydraulic Elektropep comprises a series-connected coil 49 and current source 50 of 3 in. The igniter (burner) 51 is connected to the canal: M 52, and the gas-burning device 53 of the object to be automated by channel 54 is connected to a crane 55. The object to be automated contains a breaker 56 and a water heater 57. The proposed device works in the following way. By briefly pressing the start button 44, pressure is released from cavity J4, and Membrad 13, under the action of the weight of the rigid center and flap 16, moves to open the nozzle 17, through which the gas passes into the cavity / 5, and through the channel 52 to the igniter 5. From cavity 18 through throttle 48, gas simultaneously through channel 54 enters device 53. Moving down, the hard center of the J3 membrane closes contacts 20, and since contacts 21 are set down normally, the helix 49, once under current, is heated and ignites the fire from which grief is ignited k, funkts;: about PPP:; and in a small mode, it is determined: M resistance of chokes 48. Under the action of a pilot flame, bimetallic valve 37 covers nozzle 36 and 3 of channel 35, due to gas leakage through throttle 19, pressure rises, under action the membrane 13, continuing to move the symbol, opens the contacts 21. Thus, after a few seconds after ignition of the burners, the helix 49 is automatically de-energized. Due to the gas from the cavity 3 through the choke 31, channel 32, cavity .2S, the nozzle 26, the choke 27 in the cavity 14 of the cavity increases the pressure; the pressure is in the cavity 15, however, the membrane 13 remains at the extreme and:;: Kke, m position due to the weight of the rigid chain -}; trans valve of the valve 16. With the nozzle 41 closed, the pressure also rises, and in the cavity 5 due to gas leaking through the throttle 43 from the channel 35, which causes the nozzle 10 ka to the transfer of the valve 5 and atmospheric pressure is established in the cavity 3. Under the action of gas pressure from the bottom, the membrane (fixed in the upper extreme position) and through the seat of the actuating valve the gas enters the device 53, switching it to the nominal mode of operation. Opening the nozzle 41 with a bimetallic damper 42 with the water temperature reaching a controlled value leads to stopping the gas supply by the actuating valve - to the burner in reverse order and the burner again switches to the minimum operating mode. Thus, maintaining the temperature of the water near a predetermined value is realized. The extinguishing of the flame causes the nozzle 36 to open with a bimetallic valve 37, and, therefore, the pressure drops from cavities 5 and 15. Therefore, the pilot light 51 switches to a minimum operating pressure l only after this with a time delay defined by throttle 34 , upward movement of the membrane 13 begins, since up to this point, due to the outlet pressure established in cavity 29, nozzle 26 is covered by membrane 25, and cavities -5 and 14 are disconnected. With the establishment of the minimum mode of operation, the device. 53. A small output pressure is also established in cavity 29, the membrane 25 under the action of forces; the weight of the rigid center goes down, opening the nozzle 26, and gas starts to flow from cavity 3 into cavity 14, which leads to monotonous movement of membrane 13 upwards. The contacts 21 are closed, the helix 49, heating up, re-ignites the hall 51, and all the traversal in the described sequence. Ta: in the same way, if the flame goes out accidentally, automatic re-ignition of the burners occurs. Without external accommodation, the burner is preliminarily transferred to the minimum p-work and with the supervisor at the front of the heater, which ensures safety. If the helix 49 was pressed, but any reason was not ignited. Instead of a bell, then the MSDMBRGA 13, continuing to monotonously move to the Top, will release the contacts 20 that are broken and the helix will be disconnected. Further movement of the membrane 13 up will lead to a complete cessation of the gas supply to the burners. By closing the nozzle / 7 with the shutter 16, the absence of the burners - to the complete shutdown of the gas. The operation of the sensor is similar to the operation of the flame sensor included in one to the same control channel. In order to remotely stop the operation of the gas-burning devices, pressing the button 46 is sufficient, which is equivalent to opening the nozzles 36 and 38 of the flame and draft sensors. On sites where the minimum mode of operation burned. KI is not desirable, it is enough to install a plug instead of drossel 48. Violation of the tightness of the control channels 35 ii control 40 is equivalent to the opening of the nozzles of the corresponding sensors to each other

to work with the device, ensuring self-control.

This device allows for the realization of a higher number, a set of functions for controlling and controlling household gas appliances in one device, which, ultimately, significantly reduces the cost of the equipment necessary for this.

Claims (1)

Invention Formula A pneumatic device for control of utility gas appliances containing flame and throttle sensors, chokes and an inverter relay, the supermembrane cavity of which is connected to the sensor, temperature, and the output to the supramembrane cavity of the actuating valve connected to the inlet channel with its output gas burner and through the first choke with the pilot burner channel and the output of the block the memory, the device input is connected to the inputs of the following: valve, relay-inverter and memory block, different from the fact that, with the simplification of the device, a block is installed on it, on the membrane of which a load is placed, on the Start and Stop buttons. , the submembrane cavity of the memory unit of the United States with the pneumatic button release, through the second choke, installed by E. nozzle of the banning unit, is connected to the supramembrane cavity of the banning unit, “the third choke, installed in the corrector of the actuator valve, with the supramembrane .klapana second cavity, podmembranna CAVITY prohibition unit through the fourth inductor formed in actuator casing: ALS; Pan, soedk; e.ia with valve outlet, a: - hell; the membrane of the memory box is connected via the fifth throttle to the cavity of the relay-inverter, sensors of type, flame, and the button “Stop.