CN104266222A - An automatic temperature control gas valve - Google Patents

Abstract

The invention discloses an automatic temperature control gas valve, which comprises a gas source inlet, an electromagnetic valve, a pilot fire nozzle, an electric control valve and at least one main fire outlet, wherein the electromagnetic valve comprises an electromagnetic valve body and an electromagnetic valve seat, the gas source inlet is used as a gas inlet of the electromagnetic valve seat, the gas inlets of the pilot fire nozzle and the electric control valve are respectively communicated with a gas outlet of the electromagnetic valve seat, the electromagnetic valve body controls the communication or the closing of the gas inlet and the gas outlet of the valve seat, the main fire outlet is used as a gas outlet of the electric control valve, the electric control valve is used for controlling the opening and closing of the main fire outlet and the gas outlet, and the actions of the electromagnetic valve and the electric control valve are controlled by a temperature sensing. The invention can control the size of the heating flame in real time according to the environmental temperature and has the function of automatic temperature control; the long-time fire device is provided, the ignition device does not need to be switched on and off frequently, the loss can be reduced, and the service life can be prolonged; simple structure is small, can be convenient install on current gas heater and do not influence its outward appearance.

Description

An automatic temperature control gas valve

technical field

The invention relates to an automatic temperature control gas valve arranged on gas heaters such as gas heaters, gas wall-hung furnaces, gas ornamental furnaces and the like.

Background technique

Gas heaters such as gas heaters, gas wall-hung stoves, and gas ornamental stoves are more and more widely used in daily life. Most of these gas heaters can only manually adjust the size of the flame as needed. In actual use, the user Most of the use requirements are to maintain a suitable temperature, so it is necessary to manually switch the gas heater or adjust the gas flow to adjust the size of the flame, so as to achieve the effect of maintaining a relatively constant temperature, which brings some inconvenience to the use. Due to frequent switching of the gas heater, it is easy to cause loss of the ignition device of the gas heater and reduce its service life.

Contents of the invention

In order to solve the above problems, the object of the present invention is to provide an automatic temperature control gas valve which can be conveniently arranged on the existing gas heater to have automatic temperature control function.

The technical scheme that the present invention adopts for solving its technical problem is:

An automatic temperature control gas valve, comprising a gas source inlet, a solenoid valve, a main fire nozzle, an electric control valve, at least one main fire outlet, the solenoid valve includes a solenoid valve body and a solenoid valve seat, the gas source inlet serves as The air inlet of the electromagnetic valve seat, the air inlet of the main fire nozzle and the electric control valve are respectively connected with the air outlet of the electromagnetic valve seat. The electromagnetic valve body controls the connection or closure of the air inlet and the air outlet of the electromagnetic valve seat. The outlet is used as the air outlet of the electric control valve, and the electric control valve is used to control the switch of the main fire outlet and the gas output. The action of the solenoid valve and the electric control valve is controlled by the temperature sensing feedback device.

Specifically, the temperature sensing feedback device includes a controller and a temperature sensor, wherein the temperature sensor can measure the ambient temperature and send a temperature signal to the controller, and the controller can receive and process the temperature signal of the temperature sensor, and accordingly control the solenoid valve and Electric control valve is controlled.

As an improvement of the present invention, the temperature sensing feedback device further includes a flame detection device arranged at the outlet end of the main fire nozzle, and the flame detection device can send the detection result to the controller.

More specifically, the electric control valve includes an electric control valve seat, a valve core and a stepping motor. The inlet motor and the spool are driven and controlled by the temperature sensing feedback device, and the switch of the main fire outlet and the gas output are controlled through this rotation.

As a further improvement of the present invention, a microswitch and a microswitch for controlling the rotation of the microswitch are added, wherein the microswitch is sleeved on the valve core and rotates synchronously with the valve core, and the microswitch is controlled by the temperature transmission. Sensory feedback device control.

The beneficial effect of the present invention is: because the present invention uses the temperature sensing feedback device to measure the ambient temperature and accordingly controls the gas flow at the main fire outlet, so that it can control the size of the heating flame in real time according to the difference between the set temperature and the ambient temperature, Thereby it has the function of automatic temperature control; and because the present invention uses the long bright mother fire at the mother fire nozzle to ignite the gas derived from the main fire outlet, it does not need to switch the ignition device frequently, which can reduce loss and prolong the service life; increased flame detection The device can ensure that the electric control valve is opened only when there is fire at the main fire nozzle, preventing gas leakage and ensuring safe use; the invention has simple structure and small volume, and can be conveniently installed on the existing gas heater without affecting its appearance .

Description of drawings

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is an assembly drawing of the present invention;

Fig. 2 is an overall view of the present invention.

Detailed ways

Referring to Fig. 1 and Fig. 2, an automatic temperature control gas valve includes a gas source inlet 23, a solenoid valve 2, a main fire nozzle 1, an electric control valve 3, and at least one main fire outlet 36, the solenoid valve 2 Including electromagnetic valve body 21 and electromagnetic valve seat 22, gas source inlet 23 is used as the air inlet of electromagnetic valve seat 22, the air inlet of main fire nozzle 1 and electric control valve 3 are communicated with the air outlet of electromagnetic valve seat 22 respectively, the Electromagnetic valve body 21 controls the communication or closing of the air inlet and air outlet of electromagnetic valve seat 22, and the main fire outlet 36 is used as the air outlet of the electric control valve 3, and the electric control valve 3 is used to control the switch and outlet of the main fire outlet 36. The gas volume, the action of the solenoid valve 2 and the electric control valve 3 are controlled by the temperature sensing feedback device. In actual use, first set an appropriate temperature on the temperature sensing feedback device. When the temperature is lower than the set value, the temperature sensing feedback device controls to open the solenoid valve 2, and the gas is passed into the main fire nozzle 1 from the gas source inlet 23 It is ignited by the ignition device of the gas heater, and then the temperature sensing feedback device controls to open the electric control valve 3, and the gas passes through the main fire outlet 36 into the main pipeline of the gas heater and is then ignited by the long-lived mother fire at the mother fire nozzle 1 place, The electric control valve 3 is adjusted in real time by the difference between the set temperature and the measured ambient temperature, thereby adjusting the size of the gas exported from the main fire outlet 36 to the main pipeline of the gas heater, so as to automatically control the size of the heating flame and realize the effect of automatic temperature control .

The temperature sensing feedback device includes a controller and a temperature sensor, wherein the temperature sensor can measure the ambient temperature and send a temperature signal to the controller, and the controller can receive and process the temperature signal of the temperature sensor, and control the solenoid valve 2 and the electric Valve 3 is in control.

The temperature sensing feedback device also includes a flame detection device arranged at the gas outlet of the main flame nozzle 1, and the flame detection device can send the detection result to the controller. The device can ensure that the electric control valve 3 is opened again when the gas at the gas outlet of the main fire nozzle 1 is ignited, so as to prevent gas leakage and ensure safe use.

The electric control valve includes an electric control valve seat 31, a valve core 33 and a stepping motor 35. The electric control valve seat 31 is fixed on the electromagnetic valve seat 22, and the valve core 33 is inserted in the electric control valve seat 31 and can be rotated around its axis. Rotate, the stepper motor 35 and the valve core 33 are driven and controlled by the temperature sensing feedback device, and the switch and the gas output of the main fire outlet 36 are controlled by the rotation. The stepping motor 35 can more accurately adjust the rotation of the spool 33 according to the signal of the temperature sensing feedback device.

Add a micro switch 34 and a micro switch 32 for controlling the rotation of the micro switch 34, wherein the micro switch 34 is sleeved on the spool 33 and rotates synchronously with the spool 33, and the micro switch 32 is transmitted by temperature. Sensory feedback device control. This device can control the rotation of the valve core 33 more precisely, thereby more precisely control the flow rate of the gas flowing out of the main fire outlet 36 .

Sealing rings are respectively arranged at the interface between the electromagnetic valve body 21 and the electromagnetic valve seat 22, the interface between the main fire nozzle 1 and the electromagnetic valve seat 22, and the interface between the electromagnetic valve body 22 and the electric control valve seat 31 to prevent gas leakage. Of course, it is not limited to this, and other sealing structures can also be used.

Temperature sensors, controllers, flame detection devices and electric control valves are widely used in this field, and their structures and principles are well known to those skilled in the art, and will not be described in detail here.

The above descriptions are only preferred embodiments of the present invention, as long as the technical solutions that achieve the purpose of the present invention by basically the same means are within the protection scope of the present invention.

Claims (8)

1. an automatic temperature-control gas valve, it is characterized in that: include a fuel gas source import, one magnetic valve, one female fire-fighting mouth, one electrically-controlled valve, at least one main fire outlet, this magnetic valve comprises electromagnetic valve body and solenoid valve seat, fuel gas source import is as the air inlet of solenoid valve seat, female fire-fighting mouth is communicated with the gas outlet of solenoid valve seat respectively with the air inlet of electrically-controlled valve, this electromagnetic valve body Controlling solenoid valve seat air inlet is communicated with or closedown with gas outlet, main fire outlet is as the gas outlet of this electrically-controlled valve, this electrically-controlled valve is for controlling switch and the gas output size of main fire outlet, the action of described magnetic valve and electrically-controlled valve controls by TEMP feedback device.

2. a kind of automatic temperature-control gas valve according to claim 1, it is characterized in that: described TEMP feedback device comprises controller and temperature sensor, wherein temperature sensor can measures ambient temperature temperature signal is sent to controller, controller can receive and the temperature signal of temperature sensor, and controls magnetic valve and electrically-controlled valve according to this.

3. a kind of automatic temperature-control gas valve according to claim 2, is characterized in that: described TEMP feedback device also includes the flame detecting device being arranged on female fiery nozzle exit end, and testing result can be sent to controller by this flame detecting device.

4. according to the arbitrary described a kind of automatic temperature-control gas valve of claims 1 to 3, it is characterized in that: described electrically-controlled valve includes electric-controlled valve seat, spool and stepper motor, electric-controlled valve seat is fixed on solenoid valve seat, spool is plugged in electric-controlled valve seat and also can rotates around its axis, stepper motor and spool transmission and controlled by TEMP feedback device, and control switch and the gas output size of main fire outlet by this rotation.

5. a kind of automatic temperature-control gas valve according to claim 4, it is characterized in that: it also includes fine motion shifting block and the microswitch for controlling the rotation of fine motion shifting block, described fine motion shifting block to be set on spool and with spool synchronous axial system, described microswitch is controlled by TEMP feedback device.

6. a kind of automatic temperature-control gas valve according to claim 1, is characterized in that: described electromagnetic valve body and the connection of solenoid valve seat are for being tightly connected.

7. a kind of automatic temperature-control gas valve according to claim 1, is characterized in that: the connection of described female fire-fighting mouth and solenoid valve seat is for being tightly connected.

8. a kind of automatic temperature-control gas valve according to claim 4, is characterized in that: described electromagnetic valve body and the connection of electric-controlled valve seat are for being tightly connected.