CN2160855Y - Main valve safety device of water ignition gas water heater - Google Patents

Abstract

A safety device for the main valve of water-igniting gas water heater features that an electromagnetic coil is arranged on the main valve of gas for water-igniting gas water heater, and a water lifting disk is opened to suck the main valve and lift it up by the central push rod of water disk, so opening the main valve to introduce gas flow for heating water flow. When the water switch is continuously opened while power is off, the main gas valve is not attracted by the electromagnetic coil and is closed by the return spring to prevent gas leakage from causing accidents such as explosion, fire and the like.

Description

The utility model relates to a main valve safety device of a water ignition gas water heater.

Ordinary water ignition gas water heaters (as shown in Figure 3) turn on the faucet when in use, and the water lifts a water pan (D) to open the main gas valve (P), and the main gas fire and the main fire are turned on by electronic circuit control The gas switch of the burner, the solenoid valve switch of the general main fire burner is normally open, for example, after a power failure or the fire fails, the main fire switch is not turned off, and at this time, if the faucet of the water ignition water heater is forgotten to turn off , the main gas valve continues to open, and the gas flows out through the nozzle of the main fire burner, causing a large amount of gas to leak out. When it is ignited next time, accidents such as deflagration or explosion may occur.

In view of this, the inventor of the utility model made research and innovation, and revealed the main valve safety device of the novel water ignition gas water heater of the utility model.

The purpose of this utility model is to provide a water ignition gas water heater. After the water pan is lifted and the gas main valve is opened, if a power failure causes the electromagnetic coil to be powered off, the gas main valve cannot be held, and the gas main valve is returned to the valve position by the spring. Seat, shut off the gas main valve to avoid gas leakage, thus improving the safety of gas water heaters.

After reading the following detailed description of the preferred embodiments of the utility model with reference to the accompanying drawings, the utility model can be understood more clearly.

Fig. 1 is the normally closed schematic diagram of the utility model.

Fig. 2 is the schematic diagram of the main valve tending to be closed due to the power failure of the electromagnetic coil after the utility model opens the gas main valve.

Fig. 3 is a schematic diagram of a common water ignition gas water heater plate.

Referring to the accompanying drawings, the utility model includes: a water pan controller (1), a gas main valve (2), an electromagnetic coil device (3), and a gas pipeline (4) through the gas control valve (5) ) to connect a main fire burner (6) and a main fire burner (7).

The water pan controller (1) is provided with a water pan chamber (12) in the water flow switch (not shown) or the water pipe pipeline of the faucet, and a water pan (11) is placed in the water pan chamber (12). A central push rod (13) is vertically connected to the center of the water tray, and a bias rod (131) is connected to the side to operably activate a micro switch (14) of an electronic controller (not shown). The water tray chamber (12) extends upwards to be connected to the lower part of the main valve seat (41) of the gas pipeline (4), and a push rod guide seat (16) is located at the center of the lower casing (15) to Slide the center push rod (13) in place.

The main gas valve (2) includes: a valve plug (21) containing rubber that is always tightly plugged to the main valve seat (41) so as to shut off the flow of gas from the upstream of the gas pipeline (4) to the downstream of the water heater, and a valve stem (22 ) is vertically connected to the valve plug (21) and protrudes upwards to connect a ferromagnetic flange (24) to the top of the valve stem (22), and a stem hole (23) is opened through the center of the entire valve stem (22) In order to reciprocally move a central push rod (33) of the electromagnetic coil device (3), and a valve plug return spring (25) supports the lower edge of the valve plug (21) and the electromagnetic coil device (3) In order to always plug the main valve seat (41) to shut off the gas flow.

The electromagnetic coil device (3) includes: an electromagnetic coil fixing cylinder (31) for embedding the electromagnetic coil (32) in the cylinder (31); Go through the center of the coil (321) to the center of the bottom of the electromagnetic coil fixing cylinder (31), the middle section of the rod passes through the center rod hole (23) of the gas main valve stem, and the bottom of the rod is connected to the water pan controller ( 1) The center push rod (13), the two centers are aligned, and an inner sleeve (34) slides and contains the electromagnetic coil fixing sleeve (31) in the hollow interior of the inner sleeve (34) and the inner sleeve (34) The outer cylinder body is embedded in the upper sleeve (42) above the gas pipeline (4), and a valve stem guide (35) is connected under the inner sleeve (34) to slide the valve Rod (22), the lower edge of the inner sleeve (34) is a shoulder (36) supporting the valve plug return spring (25) downward, and a coil return spring (37) is supported on the inner sleeve Between the tube (34) and the coil fixing tube (31), the coil fixing tube (31) and the electromagnetic coil (32) are always held downward so as to hold the main valve flange (24) and stem (22) to open the main valve plug (21).

The coil center push rod (33) and the water tray center push rod (13) can be lapped, fitted or connected in other ways, which are not limited by the present invention. The push rods (33, 13) can be segmented or combined; or integrally formed as a whole push rod.

When using the utility model, when the faucet or water switch is turned on, the water flow (W) enters the water pan chamber (12), lifts the water pan (11) and the center push rod (13), and deflects the micro switch (14 ) start the control circuit (not shown), energize the electromagnetic coil (32) to generate electromagnetic force to attract the main valve flange (24) and valve stem (22), and the center push rod (13) touches the center push rod of the coil (33), hold the fixed cylinder (31) so that the electromagnetic coil (32) and the gas main valve stem (22) valve plug (21) held by it move up together, leave the valve seat (41), and the gas flow (G) Then enter the downstream gas control valve (5) through the main valve seat (41) to supply the combustion application of the gas water heater.

The operation of relevant gas water heater is hereby not repeated because of the prior art. The gas control valve (5) used, for example, can use a differential pressure diaphragm type. After the bypass gas flows through the main fire burner nozzle (6) and ignites the main fire, the gas control valve seat (43) of the main fire is opened, and the gas Flow into the main burner nozzle (7) to burn and heat the water stream.

When the gas water heater is in operation, if the power supply of the controller is cut off (such as the battery power is exhausted), the electromagnetic coil (32) will be cut off, and the flange (24) of the valve stem (22) will no longer be held, and the valve plug will The return spring (25) pushes the valve plug (21) back to the main valve seat (41) to shut off the gas flow, so that the gas no longer flows into the main fire burner (6) and the main fire burner (7) to prevent gas leakage And ensure safety.

As shown in Figure 2, the water flow switch at this moment has not (or forgotten) shut off, but the main valve valve plug (21) still shuts off gas and keeps safe. Of course, when the user turns off the water flow switch again, the pressure of the water pan (11) disappears, and the water pan (11) is moved down by the force of the spring (17), so that the coil fixing cylinder (31) is not pushed by the central push rod (33, 13). The pushed top is returned by the coil return spring (37), moves down and approaches the valve stem flange (24) again so that the gas main valve (2) can be held again after the coil (32) is energized next time .

Due to the disclosure of the utility model, if the main burner is abnormal and the flame is turned off, or when the power is cut off or the power is cut off, the gas control circuit of the gas control circuit is in a state of no electricity, the gas main valve of the utility model can still automatically shut off the gas, without Considering gas leakage and outflow can ensure the safety of gas use, so it is better than ordinary gas water heaters. In the utility model, all gas leakage places should be tightly sealed such as O-rings to prevent gas leakage.

Claims (4)

1, a kind of main valve safety device of water lighting gas heater is to connect a water flow switch by a water pond controller, contains water pond central authorities and extends upwardly and establish a center push rod; And one the combustion gas main valve contain a valve plug and constitute, it is characterized in that:

This combustion gas main valve mat one valve plug return spring often holds the main valve valve seat that this valve plug is sealed this fuel gas pipeline; And

One electromagnetic spool device contains this combustion gas main valve of solenoid energising sticking and uses to open main valve supply combustion gas to water heater, and one connect on this water pond center push rod this electromagnetic spool device what of top under this main valve of hub of a spool push rod break-through and open water flow switch, elevate a turnable ladder water pond and respectively can go up this electromagnetic spool device of top during this center push rod and lift off a seat to be lifted at combustion gas main valve adsorbed under the energising situation, and compress this valve plug return spring, so that make this valve plug return after the outage, seal this valve plug return spring, so that make this valve plug return seal this valve seat and turn-off gas-flow after the outage.

2, the main valve safety device of water lighting gas heater according to claim 1, it is characterized in that this combustion gas main valve comprises: this valve plug contains the rubber packing and often clogs main valve seat and swim under water heater from the fuel gas pipeline upstream flow to turn-off combustion gas, one valve rod vertically connects the projection that makes progress of this valve plug, it is characterized by the top that this valve rod connects a ferromagnetism flanged disc what valve rod, one bar hole is offered, pass the heart among whole the valve rod so that reciprocally move the center push rod of this electromagnetic spool device, and this valve plug return spring hold under this valve plug of what and this electromagnetic spool device edge with this main valve seat of jam-pack often so that the shutoff gas-flow.

3, the main valve safety device of water lighting gas heater according to claim 1, it is characterized in that this electromagnetic spool device comprises: a solenoid stationary magazine creel is so that hold the solenoid embedding in the what stationary magazine creel, this solenoid center push rod is direct rod shape, the masthead end passes centre at the bottom of the tube that hub of a spool Swam pushes up this solenoid stationary magazine creel, the bar stage casing passes core bar hole among the combustion gas main valve valve rod, the center push rod that then connects this water pond controller at the bottom of the bar, both centrally aligneds, one inner sleeve cunning is closed, contain this inner sleeve hollow inside of this solenoid stationary magazine creel and main valve flanged disc what, stack shell is then on the build-in what fuel gas pipeline in the upper bush outside this inner sleeve, one valve stem guide is connected with under the what inner sleeve square to slide should valve rod, this inner sleeve lower edge is a shoulder, and to hold this valve plug return spring downward, and one the coil return spring hold often hold this coil stationary tube between this inner sleeve of what and this coil stationary tube and solenoid downward, but so that when energising this main valve of sticking flanged disc and valve rod so that open the main valve valve plug.

4, the main valve safety device of water lighting gas heater according to claim 3, but it is characterized in that between this hub of a spool push rod and the water pond center push rod Mining overlap joint, the mode of fit equijoin, or one-body molded be a straight-bar.

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