CN2160855Y

CN2160855Y - Main valve safety device for gas water heater fired by water control

Info

Publication number: CN2160855Y
Application number: CN 92230816
Authority: CN
Inventors: 张月娥
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-08-19
Filing date: 1992-08-19
Publication date: 1994-04-06
Anticipated expiration: 2002-08-19

Abstract

The utility model relates to a main valve safety device of a water ignition gas water heater. The utility model is characterized in that a gas main valve of the water ignition gas water heater is provided with an electromagnetic coil; when a water switch is switched on to lift a water disk, the electromagnetic coil is energized to attract the gas main valve, and the gas main valve is pushed by a center push rod of the water disk to rise; therefore, the gas main valve is opened to introduce gas flows for combustion of the burner to heat water flows. When power fails and the water switch is still in an opening state, the gas main valve is not attracted by the electromagnetic coil but returns by a return spring to close the gas main body so as to prevent gas leakage which causes accidents, such as explosion, fire accidents, etc.

Description

Main valve safety device for gas water heater fired by water control

The utility model system is about a kind of main valve safety device of water lighting gas heater.

Light water igniting gas heater (as shown in Figure 3) tap of fetching boiling water in use, water elevate a turnable ladder one water pond (D), combustion gas main valve (P) is opened, and the mat electronic circuit control is to open the burnt gas switch of female fire of combustion gas and main ignition combustor, the valve opening solenoid relation of general female ignition combustor is adopted open type, for example in power failure, after fire is being put not, female fiery switch does not give shutoff, and this moment the water lighting water heater tap if forget shutoff, the combustion gas main valve continues to open, and gas-flow flows out in a steady stream through the nozzle of female ignition combustor, causes a large amount of combustion gas to leak, when lighting next time, the contingency of fire such as detonation or blast may take place.

In view of this present utility model people is to add the research innovation, discloses the main valve safety device of the novel water lighting gas heater of the utility model.

The purpose of the utility model provides a kind of water lighting gas heater, behind water pond elevate a turnable ladder, unlatching combustion gas main valve, cause the solenoid outage can't sticking combustion gas main valve if one has a power failure, and the combustion gas main valve is repositioned to valve seat by spring, turn-off the combustion gas main valve and exempt from combustion gas and leak, thereby improved the security of gas heater.

After the detailed description to the utility model preferred embodiment below contrast the following drawings is read, can be expressly understood the utility model more.

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

Fig. 2 is that the utility model is opened behind the combustion gas main valve because of the solenoid outage, and main valve is tending towards the schematic diagram of closing.

Fig. 3 is a light water igniting gas heater dish schematic diagram.

Consult all accompanying drawings, the utility model system comprises: a water pond controller (1), one combustion gas main valve (2), an electromagnetic spool device (3), and a fuel gas pipeline (4) through gas control valve (5) to connect a female ignition combustor (6) and a main ignition combustor (7).

This water pond controller (1) lies in and a water pond chamber (12) trip is set in the water pipe line of water flow switch (not shown) or tap puts a water pond (11) in this water pond chamber (12), the water pond central vertical is connected with a center push rod (13) side and connects the microswitch (14) that a moving partially bar (131) operationally starts an electronic controller (not shown), one lower sleeve (15) this water pond chamber (12) certainly extends upwardly main valve valve seat (41) below that is used for being connected in this fuel gas pipeline (4), and a push rod guide bracket (16) is located at this setting of casing (15) central authorities to slide should close center push rod (13).

This combustion gas main valve (2) comprising: a valve plug (21) contains that the rubber packing often clogs main valve seat (41) swims under water heater from fuel gas pipeline (4) upstream flow so that turn-off combustion gas, one valve rod (22) vertically connect this valve plug (21) upwards projection one ferromagnetism flanged disc (24) is connected in the top of valve rod (22), one bar hole (23) is offered and is passed the heart among whole the valve rod (22) so that reciprocally move one of this electromagnetic spool device (3) center push rod (33), and a valve plug return spring (25) is held under this valve plug (21) and this electromagnetic spool device (3) edge so that often this main valve seat of jam-pack (41) is to turn-off gas-flow.

This electromagnetic spool device (3) comprising: a solenoid stationary magazine creel (31) is so that hold solenoid (32) embedding in tube (31), one solenoid center push rod (33) is direct rod shape, the masthead end passes centre at the bottom of the tube of this solenoid stationary magazine creel (31) of hub of a spool (321) trip top, the bar stage casing passes core bar hole (23) among the combustion gas main valve valve rod, the center push rod (13) that then connects this water pond controller (1) at the bottom of the bar, both centrally aligneds, one inner sleeve (34) is sliding to be closed, contain this solenoid stationary magazine creel (31) outside inner this inner sleeve of this inner sleeve (34) hollow (34) stack shell then build-in on fuel gas pipeline (4) in the upper bush (42), one valve stem guide (35) is connected with under inner sleeve (34) square to slide should valve rod (22), this inner sleeve (34) lower edge is a shoulder (36), and to hold this valve plug return spring (25) downward, and a coil return spring (37) be held in often hold this coil stationary tube (31) and solenoid (32) between this inner sleeve (34) and this coil stationary tube (31) but downwards so that the flanged disc (24) of this main valve of sticking and valve rod (22) are so that unlatching main valve valve plug (21) during energising.

Can adopt overlap joint between this hub of a spool push rod (33) and the water pond center push rod (13), the mode of fit or other kinds connection, the utility model is real not to limit it.These push rods (33,13) can be adopted segmentation, combined type; Or one-body molded be whole push rod.

When using the utility model, when opening tap or taps, current (W) enter in the water pond chamber (12), elevate a turnable ladder water pond (11) and center push rod (13), moving partially microswitch (14) start-up control circuit (not shown), be energized to solenoid (32) generation electromagnetic force and hold main valve flanged disc (24), valve rod (22), and center push rod (13) goes up to hub of a spool push rod (33), holding combustion gas main valve valve rod (22) valve plug (21) etc. that stationary magazine creel (31) makes solenoid (32) and institute's sticking moves in the lump, lift off a seat (41), gas-flow (G) is satisfied the burn application that enters gas control valve (5) the supply gas heater in downstream by main valve valve seat (41).

The operation of relevant gas heater is because of being that prior art is not given unnecessary details now.Used gas control valve (5) for example can use the differential diaphragm formula in the gas-flow that is close to the road after female ignition combustor nozzle (6) is lighted female fire, open the gas control valve valve seat (43) of main fire, gas-flow is become owner of burner nozzle (7) the flow heated water person of burning.

In gas heater application operating process if meet the power cut-off (exhausting) of controller as battery supply, solenoid (32) outage, the flanged disc (24) of not reverting to take drugs and holding valve rod (22), valve plug return spring (25) is valve plug (21) to be pushed up back main valve valve seat (41) turn-off gas-flow, makes combustion gas no longer flow into female ignition combustor (6) and main ignition combustor (7) prevents gas leakage and guarantees safety.

As shown in Figure 2, the water flow switch of this moment as yet not (or forgetting) turn-offs, but main valve valve plug (21) still turn-offs combustion gas and ensures safety.Certainly, when closing water flow switch again with the person, water pond (11) pressure disappears, be water pond (11) to be moved down by spring (17) strength, coil stationary tube (31) is not by center push rod (33,13) institute's ejection is by coil restoring spring (37) institute return, move down and again near this valve rod flanged disc (24) so that the main valve of sticking combustion gas once again (2) behind the next hot-wire coil (32).

Because the announcement of the utility model, undesired and accuse when flame-out such as main burner, or have a power failure, during outage, make under the combustion gas control circuit electroless state, the combustion gas main valve of the utility model still can automatically shut down combustion gas, do not consider the gas leakage outflow and can guarantee combustion gas use safety, so be better than the general gas water heater. All have the gas leakage part should add the sealings such as packing such as O type ring in relevant the utility model, leak outside with capable of preventing gas.

Claims

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.