CN111489528A - Engine generator, control method thereof and CO alarm - Google Patents
Engine generator, control method thereof and CO alarm Download PDFInfo
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- CN111489528A CN111489528A CN202010283749.7A CN202010283749A CN111489528A CN 111489528 A CN111489528 A CN 111489528A CN 202010283749 A CN202010283749 A CN 202010283749A CN 111489528 A CN111489528 A CN 111489528A
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- 238000000034 method Methods 0.000 title claims abstract description 20
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- 230000011664 signaling Effects 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims description 25
- 230000008054 signal transmission Effects 0.000 claims description 15
- 230000000007 visual effect Effects 0.000 claims description 12
- 230000003044 adaptive effect Effects 0.000 claims description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 216
- 229910002091 carbon monoxide Inorganic materials 0.000 description 216
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- 230000003287 optical effect Effects 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- 208000005374 Poisoning Diseases 0.000 description 3
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- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
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- 239000000470 constituent Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
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- 238000012423 maintenance Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
- G08B21/14—Toxic gas alarms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/04—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning exhaust conduits
- F02D9/06—Exhaust brakes
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
- G08B21/16—Combustible gas alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The present invention provides an improved engine generator capable of normally alarming or/and shutting down an engine when a CO concentration exceeds a standard and also shutting down the engine in the case where a CO alarm is removed or the like, comprising: an engine; the CO alarm is connected with the ignition device of the engine and used for detecting the concentration of CO in the environment near the engine and generating a signal according to the change of the concentration of CO to be sent to the ignition device so as to control the ignition device to ignite; the CO alarm is set as follows: when the detected CO concentration is greater than or equal to the preset concentration, sending a flameout signal to enable the ignition device to not ignite; alternatively, the ignition device does not ignite when the signaling is interrupted. The invention also provides a control method of the engine generator and a CO alarm based on the same purpose.
Description
Technical Field
The present application belongs to the field of generators, and particularly relates to generators driven by engines.
Background
When working machines driven by general-purpose engines, such as floor polishers, cleaning machines, generators, etc., are used in relatively closed places, such as rooms, basements, storage rooms, etc., where ventilation conditions are relatively poor, carbon monoxide (CO) in exhaust gas may diffuse to the working environment in which the working machine is located, and when the concentration of CO in the environment is accumulated to a certain degree, physical damage may be caused to persons in the environment. In order to avoid the harm, the working machine, particularly the generator, in the prior art is provided with a CO alarm, so that when the condition that CO in the environment exceeds a set value is detected, an alarm is sent to remind an operator to shut down the engine or/and the CO alarm directly controls the engine to stop, and when the CO concentration in the environment is low after the engine is stopped, the operator starts again. However, in carrying out the present invention, the inventors have found that the engine generator of the prior art has the following problems: under any conditions of manual removal of a CO alarm, disconnection (such as disconnection) of a connecting wire between the CO alarm and an ignition device, power failure of the CO alarm and the like, an engine for driving a generator can still be started or effectively operated, so that the possibility of causing the harmful consequences due to accumulation of CO in the environment is difficult to avoid.
It is therefore an object of the present invention to provide an improved engine generator, a method of controlling an engine generator, and a CO alarm which can ensure a normal stop (alarm) function when the CO concentration exceeds a standard, and can stop or disable the engine from being effectively started when the aforementioned problems occur, which are problems to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide an improved engine generator which can normally alarm or/and shut down the engine when the CO concentration exceeds the standard, and the engine can be shut down or not started when any situation such as the CO alarm is removed, a connecting wire between the CO alarm and an ignition device is not connected, the CO alarm is not electrified, and the like, and also provides a control method of the engine generator and a CO alarm applied to the engine generator.
In one aspect of the present invention, an engine generator is disclosed, comprising: the engine and the CO alarm are connected with the engine ignition device. The CO alarm is used for detecting the concentration of CO in the environment near the engine and generating a signal according to the change of the concentration of CO to be sent to the ignition device so as to control the ignition device to ignite, and is set as follows: when the detected CO concentration is greater than or equal to the preset concentration, sending a flameout signal to enable the ignition device to not ignite; alternatively, the ignition device does not ignite when the signaling is interrupted. Wherein, the ignition device includes: an ignition module; the first control module is connected with the ignition module and used for receiving signals and controlling the ignition module to ignite; the CO alarm includes: a CO detection module; the second control module is connected with the CO detection module and used for generating signals and sending the signals to the first control module; the second control module is connected with the first control module through a fire extinguishing wire and a control wire, and signals are sent through the control wire. And the second control module is provided with an electronic flameout control switch which is connected with the flameout wire and the control wire. Wherein, the situation of signal transmission interruption comprises: at least one of the flameout line or the control line is not on, or the CO alarm is not energized. And when the signal transmission is interrupted, the ignition device does not ignite after delaying the preset time. Further, the CO alarm further comprises: and the sound/light alarm module is connected with the second control module, and the CO alarm is set to be: when a flameout signal is sent out or at least one of the flameout line and the control line is not switched on, the signal transmission is interrupted, so that the ignition device does not ignite, and meanwhile, an alarm signal is sent out to the sound/light alarm module.
In another aspect of the present invention, a control method of an engine generator is disclosed, including the steps of: checking whether the CO alarm is electrified or not, and if the CO alarm is not electrified, the ignition device does not ignite; checking whether a flameout line or a control line connected between the CO alarm and the ignition device is connected or not, and if the flameout line or the control line is determined not to be connected, the ignition device does not ignite; the CO alarm detects the concentration of CO in the environment, determines whether the detected concentration of CO reaches a preset threshold value, and if the detected concentration of CO reaches the preset threshold value, the ignition device does not ignite. And determining that a flameout line or a control line is not connected, or starting at least one of sound/light alarm when the detected CO concentration reaches a preset threshold value. And determining that the CO alarm is not electrified or determining that a flameout line or a control line is not switched on, and not igniting the ignition device after delaying for a preset time.
In another aspect of the present invention, there is disclosed a CO alarm for an engine generator, comprising: a CO detection module; the second control module is connected with the CO detection module and generates a signal according to the change of the CO concentration; and the signal terminal is connected with the second control module and is used for being adaptively connected with a corresponding signal terminal in the ignition device of the engine and sending a signal to the ignition device so as to control the ignition device to ignite. The CO alarm is set as follows: when the detected CO concentration is greater than or equal to the preset concentration, sending a flameout signal to enable the ignition device to not ignite; alternatively, the ignition device does not ignite when the signaling is interrupted. The signal terminal comprises a flameout line port and a control line port, and signals are sent through the control line port. And the second control module is equipped with an electron flame-out control switch, and electron flame-out control switch links to each other with flame-out line port and control line port, and wherein, the condition of signalling interrupt includes: at least one of the kill line port or the control line port is not correspondingly connected. Further, the CO alarm further comprises: the power terminal is connected with the second control module, is used for providing power for the CO alarm, and is configured to be in adaptive connection with the corresponding power terminal of one of the ignition device or the external power supply; wherein, the condition of signal transmission interruption further comprises: the power supply terminal is not turned on. Further, the CO alarm further comprises: and the sound/light alarm module is connected with the second control module and is connected with an alarm terminal.
According to the several improvements respectively disclosed in the aspects, the following beneficial effects are achieved:
firstly, the logic for controlling the engine to stop under the condition that the CO concentration is greater than or equal to the preset concentration (or called threshold) is changed, namely when the condition is met, the operation for controlling the engine to stop is not directly carried out by the CO alarm, but the CO alarm generates a flameout signal (which is a trigger signal obviously different from a signal generated by the CO alarm when the engine works normally), the flameout signal is sent to an ignition device of the engine, and the ignition device triggers a first control module in the ignition device to directly control the ignition device to not ignite so as to stop the engine after receiving the flameout signal.
More importantly, according to the improved design scheme of the changed engine stop logic, under the condition that the signal generated by the CO alarm is transmitted to the ignition device by the CO alarm to be interrupted, the ignition device of the engine can also directly control the ignition device to be not ignited so as to stop the engine. Possible causes of signal disruption include at least one of the following: the method comprises the following steps of manually removing the CO alarm, disconnecting a lead used for sending a signal in the CO alarm (such as poor contact at a joint, damage of the lead and the like, and actually including the situation of manually removing the CO alarm), generating no signal when the CO alarm is powered off (such as power line drop, insufficient power or fault of a power supply and the like), damaging a CO sensor in the CO alarm and the like, wherein the situations can also be expressed as follows: the improved design overcomes the deficiencies of prior art engine generators by not having at least one of the trip wire or the control wire connected between the CO alarm and the ignition device turned on or the CO alarm is not energized. Therefore, compared with the prior art that the CO alarm directly controls the flameout line to be grounded to stop the engine when the condition is met, the improved engine generator, the control method thereof and the CO alarm applied to the engine generator can ensure the function of stopping the engine under the condition that the concentration of CO exceeds the standard, and simultaneously overcome the problems that the engine can not be stopped or can be restarted to run so as to possibly cause CO poisoning and endanger the personal safety under the abnormal conditions that the CO alarm is manually dismantled, a connecting wire between the CO alarm and an ignition device is not connected, the CO alarm is power-off and does not work and the like in the prior art. Thus, in accordance with the present invention, even if these problems occur, the improved technique also enables the engine to be shut down or not started effectively, thereby avoiding the possible accumulation of CO in the environment without the effective monitoring of the CO alarm and effectively protecting the personal safety of personnel in the environment of use.
Drawings
It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram of an engine generator according to the present invention.
Fig. 2 is a schematic structural diagram of a CO alarm system of an engine generator according to the present invention.
Fig. 3 is a schematic structural diagram of a CO alarm provided by the present invention.
Fig. 4 is a block diagram illustrating a method for controlling an engine generator according to the present invention.
Fig. 5 is a schematic structural diagram of another embodiment of the CO alarm provided by the present invention.
Fig. 6 is a schematic structural diagram of an ignition device of an engine in an engine generator according to the present invention.
Detailed Description
In the following description of the embodiments, reference is made to components, which are explicitly illustrated in the drawings, and reference numerals are assigned to the component names; the components are not shown in the drawings or are not labeled, and only the names of the components are mentioned, and no other specific description is made.
Fig. 1 is a schematic structural diagram of an engine generator according to the present invention. Fig. 2 is a schematic structural diagram of a CO alarm system of an engine generator according to the present invention.
As shown in fig. 1, the embodiment shows an engine generator 100 mainly composed of an engine 10 and an alternator 20 driven by the engine 10, wherein the engine 10 includes a fuel supply device 102, an ignition device 101, an exhaust device 103, and the like, and of course, it also includes necessary constituent components such as an air supply device and the like. The engine generator 100 of the embodiment is used as an emergency generator, the engine 10 is a general-purpose engine, the engine generator 100 may be a box generator or an open rack generator, and if the generator is a box generator, the engine generator 100 further includes a substantially square cabinet; in the case of an open rack generator, the engine generator 100 also includes a generally square frame; sometimes, the engine generator 100 as an emergency generator is also equipped with wheels; and so on, all with reference to prior art designs. In this embodiment, the engine generator 100 is an open rack generator, and further includes a substantially square frame, the engine 10 is a horizontal shaft engine having a crankshaft horizontally disposed along a length direction of the square frame, and the engine 10 is disposed at a bottom of the frame through a vibration damping mount and located in a square three-dimensional space of the frame together with a fuel supply device 102 (including a carburetor), an ignition device 101 (including a spark plug), an exhaust device 103 (including a muffler), an air supply device (including an air filter), and the like disposed thereon, and the alternator 20 driven by the engine 10. The alternator 20, which may be a flywheel-type alternator or an alternator of a separate component, is driven by the crankshaft of the engine 10. In the present embodiment, the alternator 20 is a flywheel-rotor type alternator that is provided as a flywheel of the engine 10 as well as an alternator.
A control panel with an ac/dc output 201 is provided on one side of the frame, and a fuel tank, which is one of the components constituting the fuel supply apparatus 102, is provided above the engine 10 and the alternator 20. The engine generator 100 of the present invention is characterized by further including a CO alarm 30 connected to the ignition device 101 and a power supply 301 for supplying power to the CO alarm 30, and the CO alarm 30 may be provided on a control panel or may be provided in another part of the engine generator 100. The power supply 301 of the CO alarm 30 may be a separate battery (e.g., a button battery disposed inside the CO alarm 30) dedicated to power the CO alarm 30, a starting power supply (e.g., a battery) from the engine generator 100, or an internal power supply circuit from the ignition device 101, and the invention is not limited thereto. A CO alarm 30 for detecting a CO concentration in an environment near the engine 10 and generating a signal (sometimes referred to as a control signal) according to a change in the CO concentration, the signal being sent to the ignition device 101 to control the ignition device 101 to ignite; the CO alarm 30 is set up as follows: when the detected CO concentration is greater than or equal to the preset concentration, the CO alarm 30 sends a flameout signal to the ignition device 101 to enable the ignition device 101 not to ignite; alternatively, the ignition is not fired when the CO alarm 30 sends a signal to the ignition 101. Here, the flameout signal may be a preset high level signal, that is, when the detected CO concentration is greater than or equal to the preset concentration (i.e., the CO concentration exceeds the preset threshold), the signal generated by the CO alarm 30 is a preset high level signal, and the high level signal triggers the ignition device 101 to control its own misfire. In the case where the engine generator 100 is operating normally, i.e., the CO concentration is not exceeded (the concentration is less than the preset concentration), the signal generated by the CO alarm 30 and sent to the ignition device 101 is a preset low level signal. Obviously, the preset high level signal and the preset low level signal have different voltage values or voltage value ranges, and the specific voltage value or voltage value range is designed by the designer according to the needs, which is not limited in the present invention. In the engine generator 100 of the present invention, the CO alarm 30 and the ignition device 101 are configured as the CO alarm system 40 of the engine generator 100, and the CO alarm system 40 is commonly used for other types of working machines such as a washer, a mower, a water pump, and a polisher driven by the engine in addition to the engine generator 100 shown in the present embodiment, and it is within the scope of the claims of the present patent as long as the CO alarm system of the engine generator of the present invention is applied to these working machines driven by the engine.
As shown in fig. 2, in the engine generator 100, the CO alarm system 40 is constituted by the CO alarm 30 and the ignition device 101, wherein the ignition device 101 includes: an ignition module 102 and a first control module 103 connected to the ignition module 102, wherein the first control module 103 is configured to receive a signal from the CO alarm 30 and control the ignition module 102 to ignite. The ignition module 102 in the ignition device 101 includes an ignition coil, which is responsible for ignition of the engine 10, and in the absence of receiving a non-ignition command from the first control module 103, the ignition module 102 will continuously perform ignition of the engine 10 as long as the engine 10 is running to make the engine 10 operate normally. The first control module 103 includes an ignition control circuit that implements ignition control, including ignition or non-ignition control, of the ignition coil in response to a signal from the CO alarm 30, respectively, to cause the engine 10 to operate normally or to shutdown (or fail to start). It can be seen that the ignition device 101 of the engine generator 100 of the present invention, the first control module 103, essentially uses the signal from the CO alarm 30 as the trigger signal, and according to the difference of the trigger signal (different trigger signals, the details of which will be described later), sends different commands to the ignition module 102 of the ignition device 101 to control the ignition or non-ignition control of the ignition device 101. When the ignition control circuit in the first control module 103 receives a control signal that meets the conditions, or in the case where transmission of the control signal is interrupted, the ignition control circuit grounds a misfire line inside its circuit to cause the ignition device 101 to misfire, thereby stopping the engine 10, in which case the stop is completed and the engine 10 cannot be started until the stop trouble is not eliminated even if the engine 10 is restarted.
And the CO alarm 30 includes: the second control module 303 is connected with the CO detection module 302, and the second control module 303 is configured to generate corresponding different signals according to different CO concentrations in the environment near the engine 10, which are detected by the CO detection module 302, and send the corresponding different signals to the first control module 103. The CO detection module 302 includes a CO sensor and a CO detection circuit, the CO sensor detects CO concentration in the environment, and the CO detection circuit outputs a weak concentration current signal; the second control module 303 in the CO alarm includes a conversion and amplification circuit and a calibration circuit, which receives the weak concentration current signal from the CO detection module, and converts the weak concentration current signal into (or generates) an amplified (or strong) linear voltage signal (or called signal) through the conversion and amplification circuit and the calibration circuit. In response to the different signals (low level signal or high level signal as described above) generated by the different CO concentrations detected by the CO detection module 302, the second control module 303 sends a control signal to the first control module 103 in the connected ignition device 101 to trigger the first control module 103 to send a command to the ignition module 102 to control the ignition device 101 to ignite or not ignite.
An extinguishing line and a control line (i.e. two wires 104 in fig. 2, one is an extinguishing line, and the other is a control line) are connected between the second control module 303 and the first control module 103, and a signal from the second control module 303 (i.e. the CO alarm 30) is sent to the first control module 103 through the control line to control the ignition device 101 to ignite.
More specifically, an electronic extinction control switch is connected to the second control module 303 (i.e., to the CO alarm 30), which is connected to the extinction line and the control line. The electronic flameout control switch is a semiconductor switch in the form of a triode, an MOS (metal oxide semiconductor) tube or an optocoupler and the like, and the invention is not limited in any way; the number of which may be one or several semiconductor switches and may be constituted by a corresponding resistor or capacitor, etc. Thus, when the engine generator of the present invention is operating, if the CO concentration near the engine detected by the CO detection module 302 of the CO alarm 30 is within a normal range (i.e., the CO concentration is less than the preset concentration), the electronic extinction control switch provided in the second control module 303 of the CO alarm 30 is turned on, and a signal (e.g., a low-level signal) generated by the second control module 303 according to the normal CO concentration is sent to the first control module 103 of the ignition device 101 through the control line, at this time, the first control module 103 controls the ignition module 102 of the ignition device 101 to normally ignite, so that the engine 100 operates normally; if the CO concentration near the engine detected by the CO detection module 302 of the CO alarm 30 is abnormal (i.e. the CO concentration is greater than or equal to the preset concentration), the electronic extinction control switch arranged in the second control module 303 of the CO alarm 30 is turned off, a signal (for example, a high level signal or an extinction signal) generated by the second control module 303 according to the abnormal CO concentration is sent to the first control module 103 of the ignition device 101 through the control line, at this time, the first control module 103 controls the ignition module 102 of the ignition device 101 not to ignite, so that the engine 100 is stopped or cannot be started; alternatively, when the signal generated by the second control module 303 (i.e. whether the signal is a low level signal or a high level signal) is sent to the first control module 103 of the ignition device 101 through the control line (for example, the CO alarm is not powered, the specific reason will be described below) whenever the CO concentration is in a normal range due to some reason, that is, the electronic extinction control switch is not normally turned off, the first control module 103 does not receive the signal sent by the second control module 303 of the CO alarm 30 (sent through the control line), and at this time, the first control module 103 controls the ignition module 102 of the ignition device 101 not to ignite, so that the engine 100 is stopped or cannot be started.
Wherein, the situation of signal transmission interruption comprises: at least one of the kill line or the control line is not on, or the CO alarm 30 is not energized. Here, at least one of the shutdown wire or the control wire is not turned on, and one of the possible situations is to manually remove the CO alarm 30 (i.e., neither the shutdown wire nor the control wire is turned on), or to cause the lead 104 (i.e., the shutdown wire or the control wire) to be turned off due to a drop, disconnection, or disconnection during operation of the engine generator. The CO alarm 30 is not powered on, which may be due to a power cord not being powered on (including an artificial power outage) or a CO sensor being disabled (malfunctioning) in the CO detection module 302, or may be due to other reasons, not to be enumerated herein. It should be noted that the case of the signal transmission interruption is not limited to the above-mentioned case, and it is within the scope of the present invention that the CO alarm 30 transmits the control signal to the ignition 101 in the presence of a certain condition.
The design has the advantages that: the engine can be stopped when the CO concentration exceeds the preset threshold value in the environment near the engine during running of the engine-driven power generation, and the engine can be stopped when the CO alarm sends a signal to the ignition device to be interrupted. The specific interruption reason may include, as described above, the fact that the CO alarm is manually removed, or at least one of the shutdown line and the control line is disconnected due to a certain reason, disconnection, or the like during the operation of the engine generator, or the fact that the CO alarm is not powered on due to a power line being disconnected (including man-made power outage) or a CO sensor in the CO detection module being scrapped (failed), or the like, so as to avoid a possible CO poisoning risk that the engine can still be operated or restarted when the power line is disconnected (including man-made power outage), thereby bringing users.
Further, the engine generator 100 of the present invention is preferably arranged such that the ignition device 101 is configured to control the self-misfire after delaying a preset time in the case where the signal from the CO alarm 30 to the ignition device 101 is interrupted. In an embodiment, the first control module 103 in the ignition device 101 is further provided with a delay circuit, and under the action of the delay circuit, when the first control module 103 receives a control signal from the CO alarm 30 and is interrupted, the first control module 103 controls the internal flameout line thereof to be grounded after delaying for a preset time through the ignition control circuit so as to control the ignition module 102 to perform a misfire operation, so that the ignition device 101 normally ignites within the delayed preset time, and then the ignition is stopped, and the engine 10 is stopped. In this way, after the engine 10 is stopped, the engine 10 can be restarted before the cause of misfire is eliminated, but after the start, the ignition control circuit of the first control module 103 controls the ignition device 101 to misfire and the engine 10 is stopped again after a delay of a preset time, so that the engine 10 cannot be started effectively. The preset delay time, such as 15 seconds, is set by the designer according to the design requirement, and the invention is not limited.
The design has the advantages that: the engine can be restarted after being shut down, but the engine can be shut down again after running for a preset time, so that a user can be aware that the reason for the shut down (namely the reason for the non-ignition of the engine) is not the engine, but can be caused by other reasons, such as the fact that a CO alarm is not electrified or a connecting wire (a control wire or a flameout wire) between the CO alarm and an ignition device is not connected, and the like, so that the corresponding aspect of inspection is carried out, the user can conveniently find the reason for the shut down, and the use and the maintenance of the.
In a specific embodiment, as shown in fig. 2, in the engine generator 100 of the present invention, the CO alarm system 40 is formed by the CO alarm 30 and the ignition device 101, wherein the CO alarm 30 further has an audible/visual alarm module 304 connected to the second control module 303, when the CO concentration detected by the CO alarm 30 is greater than or equal to a preset concentration, or when the signal transmission from the CO alarm 30 to the ignition device 101 is interrupted due to the aforementioned various possibilities, the second control module 303 sends an alarm signal to the audible/visual alarm module 304 to activate at least one of the audible or visual alarm elements 305 provided on the engine generator 100 (or other working machines) to alarm, the audible/visual alarm element 305 is specifically provided at a position on the control panel with the ac/dc output 201, or at other positions on the engine generator 100, the present invention is not limited thereto, the audible alarm such as a buzzer may be selected, the audible alarm may be activated for different reasons to show different frequencies when the audible alarm is selected, the audible alarm module may be activated to show different frequencies when the alarm is activated, or the audible alarm module may be activated, the audible alarm module may be activated by a different color, the audible alarm module may be activated when the audible alarm module may be activated, the audible alarm module may be activated by a different color, or the audible alarm module may be activated by a different color, the audible alarm module may be activated when the audible alarm module may be activated, the audible alarm module may be activated by a different visual alarm module may be activated, or the visual alarm module may be activated, the visual alarm module may be activated by a different color of the visual alarm module may be activated, or the visual alarm module may be activated, the visual alarm.
In another aspect of the present invention, there is provided a control method of an engine generator, including: checking whether the CO alarm is electrified or not, and if the CO alarm is not electrified, the ignition device does not ignite; checking whether a flameout line or a control line connected between the CO alarm and the ignition device is connected or not, and if the flameout line or the control line is determined not to be connected, the ignition device does not ignite; the CO alarm detects the concentration of CO in the environment, determines whether the detected concentration of CO reaches a preset threshold value, and if the detected concentration of CO reaches the preset threshold value, the ignition device does not ignite. Further, at least one of an audible/visual alarm is activated upon determining that a flameout line or a control line is not on, or upon determining that the detected CO concentration reaches a preset threshold. Further, the ignition device does not ignite after delaying a preset time when it is determined that the CO alarm is not energized, or when it is determined that the extinction line or the control line is not turned on.
Fig. 4 is a block diagram illustrating a method for controlling an engine generator according to the present invention.
As shown in fig. 4, the present invention provides a control method of an engine generator, comprising the steps of:
the engine 10 (generator 100) is started manually or electrically;
s110: checking whether the CO alarm 30 is electrified or not, if the CO alarm is not electrified, the ignition device 101 does not ignite, and the engine 10 cannot be started; if the power is determined to be powered on, the next step is carried out.
S120: checking whether a misfire line or a control line connected between the CO alarm 30 and the ignition device 101 is on, if it is determined that at least one of them is not on, the ignition device 101 does not ignite, and the engine 10 cannot be started; if the switch-on is determined, the next step is carried out.
S130: the engine 10 (the generator 100) is started and normally operated, the CO alarm 30 normally operates and timely detects the CO concentration in the environment near the engine 10, determines whether the detected CO concentration reaches a preset threshold, and proceeds to the next step if it is determined that the detected CO concentration reaches the preset threshold, that is, the detected CO concentration is greater than or equal to the preset concentration.
S131: starting at least one of sound/light alarm to alarm; meanwhile, S132 is executed: the ignition device 101 does not ignite, and the engine 10 is turned off and stops operating.
It should be noted that: steps S110 and S120 do not limit the order; steps S131, S132 are likewise not limited in order, they are performed almost simultaneously.
According to the control method, the engine can be stopped when the CO concentration in the environment near the engine exceeds the preset threshold value in the running of the engine driven type power generation, and the engine can be stopped under the conditions that the CO alarm is not connected or powered on (including manually removing the CO alarm) due to at least one of a flameout line or a control line, so that the CO poisoning danger brought to users due to the fact that the engine can still run or be restarted in the prior art is avoided.
In some embodiments, the control method of the engine generator of the present invention, when it is determined that at least one of a misfire line or a control line between the CO alarm 30 and the ignition device 101 is not turned on, performs S121: starting at least one of sound/light alarm to alarm; meanwhile, S122 is executed: the ignition device 101 does not ignite after a delay of a predetermined time, and the engine 10 is turned off and stops operating. Here, steps S121, S122 are also not limited in order, and they are performed almost simultaneously.
In some embodiments, the control method of the engine generator of the present invention, in the case where it is determined that the CO alarm 30 is not energized, executes S122: the ignition device 101 does not ignite after a delay of a predetermined time, and the engine 10 is turned off and stops operating.
The benefits of such control are: at least one of the sound/light alarm gives an alarm, so that the fault reason can be quickly found; the engine is shut down after a preset time of starting, which indicates that the engine itself is not out of order, and can prompt users to search for the cause of the failure from other aspects.
In another aspect of the invention, a CO alarm for an engine generator is also provided. Fig. 3 is a schematic structural diagram of a CO alarm provided by the present invention. As shown in fig. 3, in the embodiment, the CO alarm 30 includes: the ignition device comprises a CO detection module 302 for detecting the concentration of CO in the environment near the engine, a second control module 303 which is connected with the CO detection module 302 and generates a signal according to the change of the concentration of CO, and a signal terminal 306 which is connected with the second control module 303, wherein the signal terminal 306 is used for being adaptively connected with a corresponding signal terminal in the ignition device 101 of the engine and sending the signal to the ignition device 101 to control the ignition device to ignite. The CO alarm 30 is set up as follows: when the detected CO concentration is greater than or equal to the preset concentration, a flameout signal is sent out to enable the ignition device 101 to be not ignited, and the engine 10 is stopped or cannot be started; alternatively, when the signal transmission is interrupted, the ignition device 101 does not ignite, and the engine 10 is stopped or cannot be started.
The CO alarm of the present invention, in some embodiments, the signal terminal 306 includes a kill line port and a control line port, and a signal for controlling the ignition of the ignition device 101 is sent through the control line port. Further, the second control module 303 is provided with an electronic flameout control switch, and the electronic flameout control switch is connected with the flameout line port and the control line port. The electronic extinction control switch is a semiconductor switch in form, such as a triode, a MOS transistor or an optocoupler, etc., and may be one or more semiconductor switches in number, and may be formed by combining a corresponding resistor or capacitor, etc., and the specific form and the specific number are not limited in the present invention. In this embodiment, the CO alarm is set to: when at least one of the misfire-cord ports or the control-cord ports is not correspondingly turned on (is adaptively turned on to a corresponding port of a corresponding signal terminal in the ignition device 101) and signal transmission is interrupted, the ignition device 101 does not ignite, and the engine 10 is stopped or cannot be started.
In another embodiment, the CO alarm of the present invention, in addition to the CO detection module 302 and the second control module 303, further includes a power terminal 308, where the power terminal 308 is used for providing power for the CO alarm 30, and is configured to be fittingly connected to a corresponding power terminal of one of the ignition device 101 and the external power source; the power terminal 308 may be provided integrally with the signal terminal 306 if the power terminal 308 is configured as an internal power circuit of the ignition device 101. In this case, the CO alarm is further set to: when the power supply terminal is not turned on and the signal transmission is interrupted, the ignition device 101 does not ignite, and the engine 10 is stopped or cannot be started.
In addition, it should be noted that, in other embodiments, the CO alarm of the present invention may further include an acoustic/optical alarm module 304 controlled by the second control module 303, an alarm terminal 307 connected to the acoustic/optical alarm module 304, wherein the alarm terminal 307 is adapted to be connected to a corresponding terminal of an acoustic/optical alarm element 305 (shown in fig. 2) provided on a working machine (a specific portion such as a control panel) such as an engine generator; here, the alarm terminal 307 may be integrated with the signal terminal 306 or/and the power supply terminal 308.
Fig. 5 is a schematic structural diagram of another embodiment of the CO alarm provided by the present invention. Fig. 6 is a schematic structural diagram of an ignition device of an engine in an engine generator according to the present invention.
Referring to fig. 5, there is shown a further embodiment of the CO alarm of the present invention, in which the CO alarm 30 is a generally square box having mounting holes for mounting the CO alarm 30 to an appropriate mounting location of a working machine such as an engine generator to which it is applied. The CO detection module and the second control module of the CO alarm 30 are disposed in a box, and a signal terminal 306 and a power terminal 308 are formed on the box of the CO alarm 30 through a wire harness to the outside, wherein the signal terminal 306 includes a flameout wire port and a control wire port. In order to facilitate understanding of the CO alarm of the present invention, as shown in fig. 6, an ignition device 101 corresponding to the CO alarm embodiment is shown, an ignition module 102 and a first control module 103 are integrated on the ignition device 101, the ignition device 101 is externally provided with a signal receiving terminal 106 and a power output terminal 108 of an ignition device end corresponding to a signal terminal 306 and a power terminal 308 on the CO alarm 30 on the ignition device 101 through a wire harness, and in the present embodiment, the power of the CO alarm 30 is supplied from an internal power circuit of the ignition device 101 through the power output terminal 108 and the power terminal 308 connected thereto. Of course, the CO alarm 30 may have other terminals such as an alarm terminal for giving an alarm by an acoustic/optical signal. In the embodiment, the CO alarm is applied to a working machine such as an engine generator and is adaptively connected with the signal receiving terminal 106 and the power output terminal 108 of the ignition device 101 through the signal terminal 306 and the power terminal 308, if a user manually removes the CO alarm, that is: changing the signal terminal 306, the power terminal 308, and the signal receiving terminal 106 and the power output terminal 108 from the mated state to the unplugged state (disconnected state); or, the signal terminal 306 and the power supply terminal 308 are not caused by human factors, and any connection between the signal terminal 306 and the power supply output terminal 108 is interrupted, including at least one connection interruption of a certain port in the signal terminal 306, such as a flameout line port or a control line port; or when the CO concentration detected by the CO detection module 302 in the CO alarm 30 reaches a threshold value; then, in any of these three situations, the engine 10 in the corresponding working machine acts as follows: if the working machine (such as a generator) is in operation at that time, the first control module 103 in the ignition device 101 controls the ignition module 102 to not ignite because no signal (signal interruption) is received or a flameout signal is received, so that the engine 10 is flamed out and the engine stops operating. If a delay circuit is also provided in the first control module 103, the engine 10 can be started again before the cause of the engine 10 stalling is not eliminated, but the engine stalls again after a delay of a preset time period (for example, 15 seconds) from the start operation, so that a user is reminded to find the cause of the fault of the working machine from outside the engine, for example, from the connection between the CO alarm and the ignition device; if no delay circuit is provided in the first control module 103, the engine cannot be started until the cause for stalling the engine 10 is not eliminated.
It should be noted that, according to the engine generator or the control method of the engine generator or the CO alarm provided by the present invention, the CO detection module, the second control module, the acoustic/optical alarm module, and the ignition module, the first control module, etc. related to the CO alarm may be configured to include a discrete analog and/or digital circuit, a logic device, a microprocessor, a microcontroller, a programmable logic controller, a field programmable gate array, a composite programmable logic device, etc., and thus, the details are not repeated herein. It should be noted that other embodiments may be made on the basis of the present invention, and the embodiments are within the scope of the claims of the present invention as long as they do not depart from the spirit of the present invention.
Claims (15)
1. An engine generator comprising:
an engine having an ignition device;
the CO alarm is connected with the ignition device and used for detecting the CO concentration in the environment near the engine and generating a signal according to the change of the CO concentration, and the signal is sent to the ignition device to control the ignition device to ignite;
the CO alarm is set as follows: when the detected CO concentration is greater than or equal to the preset concentration, sending a flameout signal to enable the ignition device to not ignite; alternatively, the ignition device does not ignite when the signaling is interrupted.
2. The engine generator of claim 1,
wherein the ignition device includes: an ignition module; the first control module is connected with the ignition module and used for receiving the signal and controlling the ignition module to ignite;
the CO alarm includes: a CO detection module; the second control module is connected with the CO detection module and used for generating the signal and sending the signal to the first control module;
the second control module and the first control module are connected with an extinguishing line and a control line, and the signals are sent through the control line.
3. The engine generator of claim 2,
the second control module is provided with an electronic flameout control switch, and the electronic flameout control switch is connected with the flameout wire and the control wire.
4. The engine generator according to claim 2 or 3,
wherein, the situation of signal transmission interruption comprises: at least one of the flameout line or the control line is not on, or the CO alarm is not energized.
5. The engine generator of claim 4,
wherein, when the signal transmission is interrupted, the ignition device does not ignite after delaying the preset time.
6. The engine generator of claim 4,
wherein, CO alarm still includes: an audible/visual alarm module connected to the second control module, the CO alarm configured to: when a flameout signal is sent out or at least one of the flameout line and the control line is not switched on, the signal transmission is interrupted, so that the ignition device does not ignite, and meanwhile, an alarm signal is sent out to the sound/light alarm module.
7. A control method of an engine generator, comprising:
checking whether the CO alarm is electrified or not, and if the CO alarm is not electrified, the ignition device does not ignite;
checking whether a flameout line or a control line connected between the CO alarm and the ignition device is connected or not, and if the flameout line or the control line is determined not to be connected, the ignition device does not ignite;
the CO alarm detects the concentration of CO in the environment, determines whether the detected concentration of CO reaches a preset threshold value, and if the detected concentration of CO reaches the preset threshold value, the ignition device does not ignite.
8. The control method of an engine generator according to claim 7,
and determining that the flameout line or the control line is not connected, or determining that the detected CO concentration reaches a preset threshold value, and starting at least one of sound/light alarm.
9. The control method of an engine generator according to claim 8,
and determining that the CO alarm is not electrified, or determining that the flameout line or the control line is not switched on, and the ignition device does not ignite after delaying for preset time.
10. A CO alarm for an engine generator, comprising:
a CO detection module for detecting a CO concentration in an environment near the engine;
the second control module is connected with the CO detection module and generates a signal according to the change of the CO concentration;
the signal terminal is connected with the second control module and is used for being adaptively connected with a corresponding signal terminal in an engine ignition device and sending the signal to the ignition device so as to control the ignition device to ignite;
the CO alarm is set as follows: when the detected CO concentration is greater than or equal to the preset concentration, sending a flameout signal to enable the ignition device to not ignite; alternatively, the ignition device does not ignite when the signaling is interrupted.
11. The CO alarm of claim 10,
wherein the signal terminal comprises a flameout line port and a control line port, and the signal is transmitted through the control line port.
12. The CO alarm of claim 11,
the second control module is provided with an electronic flameout control switch, and the electronic flameout control switch is connected with the flameout wire port and the control wire port.
13. CO alarm according to claim 11 or 12,
wherein, the situation of signal transmission interruption comprises: at least one of the kill line port or the control line port is not correspondingly connected.
14. The CO alarm of claim 13, further comprising:
the power terminal is used for providing power for the CO alarm and is configured to be in adaptive connection with a corresponding power terminal of one of the ignition device or an external power supply; wherein, the condition of signal transmission interruption further comprises: the power supply terminal is not turned on.
15. A CO alarm according to any one of claims 10 to 12 further comprising:
and the sound/light alarm module is connected with the second control module and is connected with an alarm terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010283749.7A CN111489528A (en) | 2020-04-13 | 2020-04-13 | Engine generator, control method thereof and CO alarm |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010283749.7A CN111489528A (en) | 2020-04-13 | 2020-04-13 | Engine generator, control method thereof and CO alarm |
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| CN111489528A true CN111489528A (en) | 2020-08-04 |
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| CN202010283749.7A Pending CN111489528A (en) | 2020-04-13 | 2020-04-13 | Engine generator, control method thereof and CO alarm |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113409554A (en) * | 2021-06-23 | 2021-09-17 | 绍兴毅诚电机有限公司 | CO alarm for battery type generator |
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