CN2916418Y

CN2916418Y - Gas range

Info

Publication number: CN2916418Y
Application number: CN 200620056662
Authority: CN
Inventors: 刘强; 郑本瑞
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-02-01
Filing date: 2007-02-01
Publication date: 2007-06-27
Anticipated expiration: 2017-02-01

Abstract

The utility model relates to household gas furnace field, which has conquered deficiency of existing furnaces, provides an energy-saving and environmental protection gas furnace comprising a furnace shell, a burner, a gas switch, a control circuit, a gas valve, a lighter and a battery. The burner, the gas switch, the control circuit, the gas valve, the lighter and the battery are all arranged on the shell; the control circuit is connected with the gas switch, the gas valve and the lighter separately. The furnace is characterized in that: a voltage boost circuit is arranged on the control circuit to stabilize the voltage of the battery.

Description

A kind of gas furnace

Technical field

The utility model relates to domestic gas stove and accessory field, a kind of energy-conservation, safe gas stove of saying so more specifically.

Technical background

The igniter that gas furnace of the prior art adopts is an electronic lighter, needs to adopt the two-section battery that the electric power support is provided.And in the control circuit of existing electronic lighter, power source voltage is a The key factor.If power source voltage is lower than rated voltage, be generally 3V, the time, electronic lighter just can't be worked again, needs to change battery.Battery can cause certain voltage drop in the process of using, its undertension 3V that provides is provided, and battery also has certain electric weight.Particularly at the device of this low energy consumption of electronic lighter, the electric weight of remaining battery can also continue to use long time.If abandon battery this moment, certainly will cause waste, contaminated environment.

Existing gas furnace switch typically uses exposed aerial hard contact switch.But because the environment that gas furnace uses is more abominable, water is arranged on every side, oil is arranged, and gas such as water vapour smoke, temperature is also higher.Adding the intrinsic shortcoming of hard contact switch itself is contact endurance, and water, oil, water vapour, smoke etc. are easy to pollute the contact, cause poor contact of contacts, and general 3-4 month (about 200 times) begin to make mistakes i.e. loose contact.Thereby when causing the user to use gas furnace, because the exposed intrinsic defective of airborne hard contact switch, add the environment that gas furnace uses, sparking in general about 3-5 month begins that problem is arranged (because poor contact of contacts), and it is more and more difficult, to could beat several times and catch fire, lose efficacy substantially after 1.5 years.

Because the gas furnace environment for use of band blowout protection is more abominable, and water is arranged on every side, and oil is arranged, and gas such as water vapour smoke, temperature is also higher.By internal heat lid or the external ring fire cover, utilize the ground connection of center pyrosphere or outer shroud pyrosphere during tradition igniting pin and flame inductive needle are installed in, constitute the loop.During igniting pin mark fire, high pressure discharges over the ground and reaches the igniting purpose; The flame inductive needle, by flame over the ground ion do directed movement, whether reach detection has flame, visible ground wire has more important.Traditional ground wire adopts conductor structure, uses key screw pyrosphere, lead and metal furnace shell to be screwed in together, and pyrosphere and body of heater are electrically connected, and reaches the purpose of ground connection.Its shortcoming is, after use after a while, and rugged environment, the screw lead got rusty cause loose contact, and vibration that also may body of heater causes screw loosening, causes loose contact.There is great potential safety hazard in existing as can be seen technology, and the user needs often gas furnace to be safeguarded, guarantees that the ground wire contact is good, causes the trouble in the use.

The utility model content

The purpose of this utility model is to overcome deficiency of the prior art, and a kind of gas furnace of energy-conserving and environment-protective at first is provided.

Further purpose of the present utility model provides a kind of safe, the gas furnace of energy-conserving and environment-protective.

The utility model is achieved through the following technical solutions its purpose.

The utility model is specially a kind of gas furnace, mainly comprises stove and accessory housing, burner, burnt gas switch, control circuit, gas valve, igniter and battery on the structure; Burner, burnt gas switch, control circuit, gas valve, igniter and battery are installed on the stove and accessory housing, control circuit burnt gas switch, gas valve respectively is connected with igniter, and its improvement part is to add a booster circuit that is used for stable cell voltage on control circuit.The conduct of booster circuit is can improve the voltage of battery when battery produces voltage drop, make voltage maintain constant rated value.Till making battery can use electric weight to exhaust fully, thereby save the energy always, and reduce the amount of abandoning of battery, protected environment, and the user also need not often to change battery.Concrete booster circuit can adopt general boost circuit structure, as by the direct current conversion chip, and the booster circuit that diode and inductance constitute.

In order to make burnt gas switch can not be subjected to the influence of surrounding environment, burnt gas switch of the present utility model adopts magnetic switch.Comprise tongue tube on the structure and can trigger reed switch conduction or closed magnet, the two ends pin of magnetic switch is electrically connected with control circuit, the interlock of magnet switch knob.Switch knob is rotary handle or plug-type handle.Described tongue tube comprises that glass tube, an end are sealed in a pair of mutual opposed flexible tongue in the glass tube, and the opposing end surface of tongue is provided with the contact, and described control circuit is connected with the other end of glass tube tongue outward.Tongue tube adopts a pair of flexible tongue made from magnetic material to form, and the tongue end face is folded mutually but left an areolar.When the magnetic field that permanent magnet or coil produced puts on the tongue tube, make two tongue magnetization of tongue tube, make a tongue on contact position, generate the N utmost point, generate the S utmost point on the contact position of another tongue.If the magnetic attraction that generates has overcome the resistance that the elasticity of tongue produces, tongue is attracted power effect contact conducting, i.e. gas ignition control circuit closure.In case magnetic field force is eliminated, tongue separates again because of the elastic force effect, and promptly the gas ignition control circuit disconnects.Because tongue tube does not adopt sliding members, so can not occur guaranteeing in fact limitless mechanical service life because of adopting the relevant metal fatigue phenomenon of metalwork.And,, can not be subjected to the pollution of kitchen water, oil, flue gas because the contact of tongue tube is sealed in the glass tube.Simultaneously also can be on the gas furnace that has flame-out protection device with this switch application.

For improving the security performance of igniter ground connection, igniter of the present utility model is made of igniting pin, flame-out inductive needle and grounding pin, the integrated device of igniter, grounding pin are located between igniting pin and the flame-out inductive needle, and grounding pin one end is connected with the negative electricity of battery.In the process of using, during igniting, form the loop between igniting pin and the grounding pin, carry out high voltage arc.Whether in the process of burning, flame-out inductive needle and grounding pin form the loop, continue the monitoring burner and burn, if flame-out, then close gas valve, reach the purpose of blowout protection.If the problem of loose contact appears in grounding pin, then light a fire pin and flame-out protection device change and form the loop by the fire figure with burner, play the effect of duplicate protection.One end of grounding pin is connected with the negative pole of battery.Because link generally exposes, be subjected to the influence of external condition easily and cause loose contact.And battery case is the structure that seals fully, can not be subjected to the influence of water, vapour, oil, cigarette in the process that gas-cooker uses.So link is located at helps guaranteeing the reliability that electrically connects in the battery case.

The utility model is existing to have following substantive distinguishing features and progress for prior art.

1. be provided with booster circuit, prolonged the service life of battery, save the energy, reduce environmental pollution;

2. the employing magnetic switch greatly the service life of the burnt gas switch of Ti Gaoing, has reduced the destruction of external environment to burnt gas switch;

3. the igniter of igniting pin, flame-out inductive needle and grounding pin formation has double protection functions, has improved the ignition performance and the extinguish protection function of igniter, and it is safer to make that gas kitchen ranges uses.

Description of drawings

The structural representation of Fig. 1 gas furnace;

Fig. 2 A is the structural representation of burnt gas switch off-state;

Fig. 2 B is the structural representation of burnt gas switch closure state;

Fig. 3 is the structural representation of igniter;

Fig. 4 is the circuit diagram of control circuit.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described further.

A kind of gas furnace as shown in Figure 1 mainly comprises stove and accessory housing 1, burner 2, burnt gas switch 3, control circuit 4, gas valve 5, igniter 6 and battery 7.Burner 2, burnt gas switch 3, control circuit 4, gas valve 5, igniter 6 and battery 7 are installed on the stove and accessory housing 1, and control circuit 4 is electrically connected with burnt gas switch 3, gas valve 5, total valve 8 and igniter 6 respectively.Shown in the circuit diagram of Fig. 4, in described control circuit 4, also comprise the booster circuit 41 that is used for stable cell 7 voltages, booster circuit 41 is by direct current conversion chip IC3, and diode D15 and inductance L 1 constitute.Can maintain on the rated operational voltage of 3V by stabilized power source voltage when being provided with control circuit 4 work of booster circuit 41, prevent that battery 7 from using the voltage drop that produces after a period of times and causing the shortening in the service life of battery 7.

Fig. 2 A is the structural representation of the burnt gas switch 3 of present embodiment.Be a magnetic switch among the figure, comprise tongue tube 31 and can trigger reed switch conduction or closed magnet 32 that the two ends pin of magnetic switch is electrically connected with

control circuit

4,33 interlocks of magnet 32 switch knobs.Tongue tube 31 comprises that glass tube 311, an end are sealed in a pair of mutual opposed flexible tongue 312,313 in the glass tube 311, the opposing end surface of tongue 312,313 is provided with the contact, and described control circuit 4 is connected with the other end of glass tube tongue 312,313 outward.Flexible tongue 312,313 is a separated position when magnet 32 distances are far away, and this moment, control circuit 4 was not controlled sparking.By the rotation or the push-and-pull of switch knob 33, when magnet 32 was nearer apart from tongue tube 31, flexible tongue 312,313 was a contact condition, and control circuit 4 control sparkings this moment are shown in Fig. 2 B.

Fig. 3 is the structural representation of igniter 6, comprises igniting pin 61, flame-out inductive needle 62 and grounding pin 63.Igniter 6 integrated devices, grounding pin 63 are located between igniting pin 61 and the flame-out inductive needle 62.Grounding pin 63 1 ends are connected with the negative electricity of battery 7.When igniting, light a fire pin 61 high pressure over the ground, first-selected grounding pin 63, discharge reaches the igniting purpose.Flame-out inductive needle 62 passes through flame over the ground, and at first grounding pin 63, make ion do directed movement, and whether reach detection has flame, if grounding pin 63 goes wrong, igniting pin 61 and inductive needle 62 constitute the loop by the ground of body of heater, reach the purpose of dual fail-safe.

Claims

1. a gas furnace mainly comprises stove and accessory housing (1), burner (2), burnt gas switch (3), control circuit (4), gas valve (5), igniter (6) and battery (7); Burner (2), burnt gas switch (3), control circuit (4), gas valve (5), igniter (6) and battery (7) are installed on the stove and accessory housing (1), control circuit (4) is connected with burnt gas switch (3), gas valve (5) and igniter (6) respectively, also comprises the booster circuit (41) that is used for stable cell (7) voltage with it is characterized in that described control circuit (4).

2. gas furnace according to claim 1, it is characterized in that described burnt gas switch (3) is a magnetic switch, comprise tongue tube (31) and can trigger reed switch conduction or closed magnet (32), the two ends pin of magnetic switch is electrically connected with control circuit (4), magnet (32) and switch knob (33) interlock.

3. gas furnace according to claim 1 and 2 is characterized in that described igniter (6) comprises igniting pin (61), flame-out inductive needle (62) and grounding pin (63).

4. gas furnace according to claim 3 is characterized in that described switch knob (33) is rotary handle or plug-type handle.

5. gas furnace according to claim 3, it is characterized in that described tongue tube (31) comprises that glass tube (311), an end are sealed in a pair of mutual opposed flexible tongue (312) (313) in the glass tube (311), the opposing end surface of tongue (312) (313) is provided with the contact, and described control circuit (4) is connected with the other end of glass tube tongue (312) (313) outward.

6. gas furnace according to claim 3 is characterized in that the integrated device of described igniter (6), and grounding pin (63) is located between igniting pin (61) and the flame-out inductive needle (62).

7. gas furnace according to claim 6 is characterized in that described grounding pin (63) one ends are connected with the negative electricity of battery (7).

8. gas furnace according to claim 3 is characterized in that described booster circuit (41) mainly by the direct current conversion chip, and diode and inductance constitute.