阅读说明：本技术 一种防空烧控制装置 (Empty burning prevention control device ) 是由 夏光超 于 2021-07-22 设计创作，主要内容包括：本发明属于炉灶防空烧技术领域,具体涉及一种防空烧控制装置。本发明包括常明火电磁阀、主火电磁阀以及与电源模块电连接的点火与熄火保护模块,电源模块还通过主火电路电连接主火电磁阀；点火与熄火保护模块延伸出两道控制电路,其中,第一控制电路连通常明火点火器处点火针从而控制该点火针产生点火动作,第二控制电路处布置点火与熄火保护继电器KJ1,从而控制串联于主火电路上的常开触点K1产生开关动作；该装置还包括检锅传感器,检锅传感器处布置继电模组,从而控制串联于主火电路上与常开触点K1串联的常开触点K3产生开关动作。本发明其不但工作稳定性高,同时还具有成本低、维护维修容易的特点,利于实际使用。(The invention belongs to the technical field of empty burning prevention of stoves, and particularly relates to an empty burning prevention control device. The ignition and flameout protection device comprises a normally open fire electromagnetic valve, a main fire electromagnetic valve and an ignition and flameout protection module electrically connected with a power module, wherein the power module is also electrically connected with the main fire electromagnetic valve through a main fire circuit; the ignition and flameout protection module extends out of two control circuits, wherein the first control circuit is communicated with an ignition needle at a normally open flame igniter so as to control the ignition needle to generate an ignition action, and the second control circuit is provided with an ignition and flameout protection relay KJ1 so as to control a normally open contact K1 connected in series on a main fire circuit to generate a switching action; the device also comprises a pot detection sensor, wherein a relay module is arranged at the pot detection sensor, so that a normally open contact K3 which is connected with the main fire circuit in series and is connected with the normally open contact K1 in series is controlled to generate switching action. The invention has the characteristics of high working stability, low cost and easy maintenance, and is beneficial to practical use.)

1. The utility model provides an air-defense is burnt controlling means, is including being used for opening and close the normal naked light solenoid valve DCF1 of normal naked light gas circuit and being used for opening and close the main fire solenoid valve DCF2 of main fire gas circuit, its characterized in that: the device also comprises an ignition and flameout protection module (60) electrically connected with the power supply module (50), wherein the power supply module (50) is also electrically connected with a main fire electromagnetic valve DCF2 through a main fire circuit (a); the ignition and flameout protection module (60) extends out of two control circuits, wherein the first control circuit (b) is communicated with an ignition needle at the normally open flame igniter (80) to control the ignition needle to generate an ignition action, and the second control circuit (c) is provided with an ignition and flameout protection relay KJ₁Thereby controlling a normally open contact K connected in series with the main live line (a)₁Generating a switching action; the device also comprises a pot detection sensor (30) electrically connected with the power supply module (50), wherein a relay module is arranged at the pot detection sensor (30), so that the relay module generates power-on and power-off actions according to whether a pot exists on the furnace end, and then the control is positioned on the main fire circuit (a) and the normally open contact K₁Series normally open contact K₃Generating a switching action.

2. The idle-burning prevention control device as claimed in claim 1, wherein: the pot detection sensor (30) is a diffuse reflection photoelectric sensor or an ultrasonic sensor; an intermediate circuit (e) is bridged on the main live circuit (a), and a normally open contact K is connected in series on the intermediate circuit (e)₂And power-off delay relay KT₃(ii) a The relay module is an intermediate relay KJ which can generate power-off action according to whether a cooker exists on the stove head (90)₂Normally open contact K controlled by intermediate relay KJ2₂Generating a switching action to turn off the power delay relay KT₃The normally open contact K3 is controlled to generate a switching action.

3. The idle-burning prevention control device as claimed in claim 1, wherein: the pot detection sensor (30) is a diffuse reflection photoelectric sensor or an ultrasonic sensor; the relay module is a power-off delay relay KT₃Thereby directly controlling the normally open contact K₃Generating a switching action.

4. The idle-burning prevention control device as claimed in claim 1, wherein: the pot detection sensor (30) is a diffuse reflection photoelectric sensor or an ultrasonic sensor; the relay module is an intermediate relay KJ2 which can generate power-off action according to whether a cooker exists on the stove head (90) or not, and the intermediate relay KJ₂Direct-control normally open contact K₃Generating a switching action.

5. An empty burning prevention control device as claimed in claim 1 or 2 or 3 or 4, wherein: the power supply module (50) and the ignition and flameout protection module (60) are connected with an external power supply through a main circuit (d), and a power switch K is arranged on the main circuit (d)₀(ii) a The blower (70) is electrically connected to the main circuit (d) and is switched by a wind pressure switch K_mAnd controlling opening and closing.

6. An empty burning prevention control device as claimed in claim 1 or 2 or 3 or 4, wherein: the pot detection sensor (30) is fixed on a fixed frame (10) on a cooking range rack, an installation box (20) with a hollow cavity is arranged at the top end of the fixed frame (10), the pot detection sensor (30) is arranged in the installation box (20), a photosensitive path of the pot detection sensor (30) points to the position of a pot at a furnace end, and an opening (21) used for avoiding the photosensitive path of the pot detection sensor (30) is formed in the installation box (20) in a penetrating manner; the induction surface of the sensor (30) extends downwards to form a guide plate (31) used for guiding cleaning media at the induction surface, a guide hole (22) penetrates through the wall of the installation box (20), the guide plate (31) penetrates through the guide hole (22) downwards and extends to the external environment, and a passing gap for the cleaning media to flow is reserved between the guide surface of the guide plate (31) and the wall of the guide hole (22).

7. The idle-burning prevention control device as claimed in claim 6, wherein: the mounting box (20) is in a square box shape, the box wall of one side, facing the furnace end, of the mounting box (20) is taken as a front box wall, a slope surface (20a) is arranged between the front box wall and a top box wall of the mounting box (20), and the slope surface (20a) is provided with the open hole (21); the top end of the fixed frame (10) is assembled at the rear part of the bottom box wall of the installation box (20), and the diversion hole (22) is positioned at the front part of the bottom box wall of the installation box (20).

8. The idle-burning prevention control device as claimed in claim 7, wherein: the device also comprises an angle adjusting part used for adjusting the pitching angle of the sensing surface at the pot detecting sensor (30); the angle adjusting part comprises mounting holes (41) which horizontally penetrate through the box walls on two sides of the mounting box (20), the mounting holes (41) are arc-shaped waist-shaped holes, and the arc-shaped curvature centers of the mounting holes (41) and the direction of the light sensing paths of the pot detection sensors (30) are opposite to each other; two side walls of the pot detection sensor (30) extend out of a thread adjusting rod (42) in opposite directions, the thread adjusting rod (42) penetrates out of the installation box (20) through a group of installation holes (41) respectively, and the thread adjusting rod is fastened on two side box walls of the installation box (20) through adjusting nuts (43).

9. The dry burning prevention control device according to claim 8, wherein: the appearance of fixing frame (10) is the "C" word cell body form of opening orientation kitchen range frame place direction, and lower part nock (12) of fixing frame (10) constitute the stiff end that is used for fixed kitchen range frame, and the upper portion eaves mouth (11) of fixing frame (10) constitute and are used for blockking that cleaning medium gets into the chamber of blocking of fixing frame (10) cell by water conservancy diversion hole (22) department, and the chamber of fixing frame (10) constitutes the chamber that holds that can supply the signal line of examining pot sensor (30) to place.

10. The dry burning prevention control device according to claim 9, wherein: a rotating shaft is horizontally installed at the upper edge position of the opening hole (21), and the cover plate rotates around the rotating shaft to cover the opening hole (21) from the outside.

Technical Field

The invention belongs to the technical field of empty burning prevention of stoves, and particularly relates to an empty burning prevention control device.

Background

The commercial cooking stove has extremely wide application in China, and the energy consumption of the commercial cooking stove is considerable. In actual operation, because a cook is busy when cooking dishes and the energy-saving consciousness is low, the cooker is always free from empty burning by the stove fire after leaving the hearth; the empty burning causes energy waste, increases the fire risk of the kitchen, and increases the discharge of waste heat and waste gas of the kitchen in an endless way, thus being urgent to solve.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides the idle-burning prevention control device applying the device, which not only has high working stability, but also has the characteristics of low cost and easy maintenance, and is beneficial to practical use.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an air-defense is burnt controlling means, is including the normal naked light solenoid valve that is used for opening and close normal naked light gas circuit and the main fire solenoid valve that is used for opening and close the main fire gas circuit, its characterized in that: the device also comprises an ignition and flameout protection module electrically connected with the power module, and the power module is also electrically connected with a main fire electromagnetic valve through a main fire circuit; the ignition and flameout protection module extends out of two control circuits, wherein the first control circuit is communicated with an ignition needle at the normally open flame igniter to control the ignition needle to generate ignition action, and the second control circuit is provided with an ignition and flameout protection relay KJ₁Thereby controlling a normally open contact K connected in series on the main fire circuit₁Generating a switching action; the device still includes the pot sensor of examining of being connected with power module electricity, examine pot sensor department and arrange relay module to whether there is the pan according to the furnace end and make that relay module produces get electric and lose the electric action, and then control is located main fire power on the road with normally open contact K₁Series normally open contact K₃Generating a switching action.

Preferably, the pan detection sensor is a diffuse reflection photoelectric sensor or an ultrasonic sensor; the main fire circuit is bridged with an intermediate circuit which is connected with a normally open contact K in series₂And power-off delay relay KT₃(ii) a The relay module is an intermediate relay KJ which can generate power-off action according to whether a cooker exists on the stove head₂Intermediate relay KJ₂Control normally open contact K₂Generating a switching action to turn off the power delay relay KT₃Re-controlled normally open contact K₃Generating a switching action.

Preferably, the pan detection sensor is a diffuse reflection photoelectric sensor or an ultrasonic sensor; the relay module is a power-off delay relay KT₃Thereby directly controlling the normally open contact K₃Generating a switching action.

Preferably, the pan detection sensor is a diffuse reflection photoelectric sensor or an ultrasonic sensor; the relay module is an intermediate relay KJ which can generate power-off action according to whether a cooker exists on the stove head₂Intermediate relay KJ₂Direct-control normally open contact K₃Generating a switching action.

Preferably, the power module and the ignition and flameout protection module are connected with an external power supply through main circuits, and a power switch K is arranged on the main circuits₀(ii) a The blower is electrically connected to the main circuit and is switched on by a wind pressure switch K_mAnd controlling opening and closing.

Preferably, the pot detection sensor is fixed on a fixed frame on a cooking range rack, an installation box with a hollow cavity is arranged at the top end of the fixed frame, the pot detection sensor is arranged in the installation box, a photosensitive path of the pot detection sensor points to the position of a pot at a furnace end, and an opening for avoiding the photosensitive path of the pot detection sensor is formed in the installation box in a penetrating manner; the induction surface of the sensor extends downwards to form a guide plate for guiding the cleaning medium at the induction surface, a guide hole is formed in the wall of the installation box in a penetrating mode, the guide plate penetrates downwards through the guide hole and extends to the external environment, and a passing gap for the cleaning medium to flow is formed between the guide surface of the guide plate and the wall of the guide hole.

Preferably, the mounting box is in a square box shape, the box wall of one side of the mounting box, which faces the furnace end, is taken as a front box wall, a slope is arranged between the front box wall and the top box wall of the mounting box, and the slope is provided with the open hole; the top end of the fixing frame is assembled at the rear part of the bottom box wall of the installation box, and the flow guide hole is positioned at the front part of the bottom box wall of the installation box.

Preferably, the device also comprises an angle adjusting part for adjusting the pitching angle of the sensing surface at the pot detection sensor; the angle adjusting part comprises mounting holes which horizontally penetrate through the box walls on the two sides of the mounting box, the mounting holes are arc-shaped waist-shaped holes, and the arc-shaped curvature centers of the mounting holes and the direction of the photosensitive path pointing direction of the pot detection sensor are opposite to each other; two side walls of the pot detection sensor extend out of the thread adjusting rods in opposite directions, the thread adjusting rods penetrate out of the installation box through the group of installation holes respectively, and the thread adjusting rods are fastened on two side box walls of the installation box through adjusting nuts.

Preferably, the mount appearance is the opening and is described the kitchen range frame place direction "C" word slot form, and the lower part nock of mount constitutes the stiff end that is used for fixed kitchen range frame, and the upper portion eaves mouth of mount constitutes and is used for blockking that cleaning medium gets into the end that blocks of mount slot intracavity by water conservancy diversion hole department, and the slot chamber of mount constitutes the chamber that holds that can supply the signal line of examining the pot sensor to place.

Preferably, a rotation shaft is horizontally installed at a position along the opening hole, and the cover plate rotates around the rotation shaft to cover the opening hole from the outside.

The invention has the beneficial effects that:

1) by the scheme, the detection of the pot position by the pot detection sensor is combined with the control of the series of relays on the main fire electromagnetic valve, so that the main fire is timely ignited by the normal open fire when the pot is placed on the hearth or a cook turns the pot to cook after the power supply of the cooking range is turned on and the equipment normally runs; when the pan is far away from the hearth, the main fire can be extinguished by responding to the main fire, so that the automatic idle-burning prevention control effect is realized. Obviously, the invention not only has high working stability, but also has the characteristics of low cost and easy maintenance, and is beneficial to practical use.

2) Furthermore, for the pot detection sensor, on one hand, the fixing frame with the installation box is arranged, so that the purpose of reliably accommodating the pot detection sensor is achieved, and the fouling conditions of oil stains and the like which are essential to work and sensitive to a fragile sensing device are avoided; meanwhile, through the arrangement of the open holes, the induction surface of the pot detection sensor is protected as far as possible, and meanwhile, the normal use of the pot detection sensor is not hindered. On the other hand, when the sensing surface of examining the pot sensor can not avoid appearing greasy dirt etc. and need wash, can directly spout into cleaning medium by trompil department, cleaning medium can carry the greasy dirt to leak from the water conservancy diversion hole along the guide plate, and can not produce the work influence to examining the pot sensor that is located the install bin, and it is very convenient to use. The invention can detect whether the position of the cooker at the hearth above the furnace end exists or not by sensing the cooker detecting sensor, and realize the idle burning prevention control by matching and controlling the series of relays; meanwhile, the automatic control system also has the functions of online protection and cleaning of the pot detection sensor, so that the aim of preventing idle burning of the commercial cooking stove can be reliably achieved for a long time.

3) Furthermore, the opening should be arranged on the slope surface, so that the aim of the upward-looking irradiation angle of the pot detection sensor relative to the pot is fulfilled; in this way, the sensor position can be relatively low when assembled, thereby reducing the impact on normal stove use after assembly. Similarly, the pot detection sensor should also be capable of adjusting the pitch angle through the angle adjusting part, so that the pot detection sensor has good adaptability to detection of various pots with different sizes. The opening, i.e. the above mentioned "C" -shaped slot-like opening, is fitted with a rotating shaft in horizontal direction at the mouth position, around which a metal hinge is rotated to cover the opening from the outside, which is designed for sensor fouling prevention when the device is out of service for a long time.

4) The lead-out path of the cleaning medium, should not influence the sensor device body and the corresponding signal lines. Therefore, the fixing frame can be independently designed, so that the cornice at the upper part of the fixing frame naturally forms a shielding structure, the cleaning medium is ensured to be far away from the groove cavity of the fixing frame, and the working reliability of parts is ensured. The opening is horizontally provided with a rotating shaft at the position of the upper edge of the opening, and the cover plate rotates around the rotating shaft to cover the opening from the outside.

Drawings

FIG. 1 is an electrical schematic of the present invention;

FIG. 2 is a front view of the pan detection sensor;

FIG. 3 is a cross-sectional view of FIG. 2;

fig. 4 is a right side view of fig. 2.

The actual correspondence between each label and the part name of the invention is as follows:

a-main fire circuit b-first control circuit c-second control circuit

d-main circuit e-intermediate circuit

10-fixed frame 11-upper cornice 12-lower arc mouth

20-installation box 20 a-slope 21-opening 22-diversion hole

30-pot detecting sensor 31-guide plate

41-mounting hole 42-threaded adjusting rod 43-adjusting nut

50-power module 60-ignition and flameout protection module 70-blower

80-ever-open fire igniter 90-furnace end

Detailed Description

For ease of understanding, the specific structure and operation of the present invention is further described herein with reference to FIGS. 1-4:

the concrete components of the invention include: power switch K₀The system comprises a power module 50, an ignition and flameout protection module 60, a pot detection sensor 30, a normally open fire electromagnetic valve DCF1, a main fire electromagnetic valve DCF2 and a wind pressure switch K_mAnd a blower 70, etc. When assembling, as shown in fig. 1, the wind pressure switch K_mIs arranged at the air outlet of the blower 70 and is connected with the ignition and flameout protection module 60; the ignition and flameout protection module 60 is electrically connected to the ignition needle of the normally open flame igniter and the normally open flame solenoid valve DCF1 through the first control circuit b and the second control circuit c, respectively. In the embodiment of fig. 1, the pan detection sensor 30 and the power module 50 are connected via an intermediate relay KJ₂Connecting, intermediate relay KJ₂Re-controlled power-off delay relay KT₃Interruption time-delay relay KT₃And then controls the main fire solenoid valve DCF 2. The power module 50 is connected to the pot detection sensor 30, each solenoid valve, and each relay.

The specific work flow is as follows:

power switch K for stove₀After turning on, the blower 70 is powered on and the ignition and misfire protection module 60 delays for a few seconds to achieve pre-purging of the furnace. During this period, if the wind pressure switch K_mDetecting that the air pressure of the air outlet of the air blower 70 reaches a set value range, then the air pressure switch K_mIn a closed state. In this case, when the delay is over, the IGNITION AND FIRE-OFF PROTECTION Module 60 initiates a high voltage ignition sequence, outputting a high voltage V as shown in FIG. 1₁At two rootAn electric arc is generated between the ignition needles and an excitation voltage V is output₂And (3) feeding a normally open flame solenoid valve DCF1 to connect a normally open flame gas circuit to ignite the normally open flame.

② the ignition and flameout protection module 60 enters the 'working' state after detecting the normal combustion of the normally open fire by the flame detection sensor, and outputs the excitation voltage V as shown in figure 1₃To close the ignition and flameout protective relay KJ₁(ii) a If the ignition and flameout protection module 60 detects that the combustion state of the normally open flame is abnormal through the flame detection sensor, the output voltage is low level, and the ignition and flameout protection relay KJ₁When power is lost, the normally open contact K is enabled₁And disconnecting and triggering the sound alarm circuit to give an alarm. The flame detection sensor is preferably a flame ion detection sensor.

③ when the pot is placed on the hearth, the diffuse reflection photoelectric sensor or the ultrasonic sensor, that is, the pot detecting sensor 30 outputs the high-level voltage V as shown in fig. 1 after detecting the sufficient quantity of light reflection signals₄With normally open intermediate relay KJ₂Normally open contact K for power supply₂Closed and power-off time-delay relay KT₃Normally open contact K for power supply₃Closing, thereby energizing the main fire solenoid valve DCF 2. The power supply comes from the power module 50.

Fourthly, when the pan leaves the upper part of the hearth, the pan detecting sensor 30 outputs the voltage V because the pan detecting sensor cannot receive enough reflected light signals₄Is at low level and has normally open contact K₂Turn-off and power-off delay relay KT₃The control coil power supply is cut off. Power-off delay relay KT₃The delay threshold value is preset, and after the delay threshold value is reached, the power-off delay relay KT₃Controlled normally open contact K₃And is disconnected, power module 50 stops supplying power to the control coil of main fire solenoid valve DCF2, and main fire solenoid valve DCF2 closes. Aiming at the power-off time-delay relay KT₃The time delay design, its benefit is avoided when the cook is cooking in the top pot, because the pan is in quick dynamic change state, probably not enough from the light signal intensity that the pan outside reflects back in a certain twinkling of an eye, leads to diffuse reflection photoelectric sensor or ultrasonic sensingOutput voltage V of the device₄Low, resulting in the main fire being accidentally turned off; the design of this time delay can effectively play the effect of eliminating the interference of this accidental emergency, has strengthened the stability of preventing the idle running fever function.

And fifthly, repeating the third step and the fourth step when the pot is placed on the hearth again.

For the pan detection sensor 30, it is fixed at the fixing frame 10 on the stove rack, that is: the pot detection sensor 30 is arranged in the mounting box 20, and the purpose of controlling the irradiation of the pot is realized through the opening 21 on the slope surface 20 a. To ensure the real-time cleaning function of the sensing surface of the pan sensor, a cleaning medium is sprayed from the opening 21, and the cleaning medium flows down the flow guide plate shown in fig. 2 and finally flows out of the device through the flow guide hole 22.

The shape of the fixing frame 10 is shown in figure 1, when assembling, the fixing frame is hooked on a cooking range frame from bottom to top through a lower arc opening 12, and welding or thread fixed connection and the like can be adopted; the cornice 11 on the upper part of the fixing frame 10 naturally forms a waterproof structure similar to an eave, so that cleaning media which are naturally led out from the guide plate 31 and mixed with dirt cannot enter the fixing frame 10, and influence on internal sensing devices, corresponding signal lines and the like is avoided.

It will, of course, be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.