CN108266855B - Air conditioning system and fire prevention control device and method thereof - Google Patents
Air conditioning system and fire prevention control device and method thereof Download PDFInfo
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- CN108266855B CN108266855B CN201810076610.8A CN201810076610A CN108266855B CN 108266855 B CN108266855 B CN 108266855B CN 201810076610 A CN201810076610 A CN 201810076610A CN 108266855 B CN108266855 B CN 108266855B
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 89
- 230000002265 prevention Effects 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000001514 detection method Methods 0.000 claims description 14
- 230000002159 abnormal effect Effects 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 7
- 230000007935 neutral effect Effects 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioning system and a fire prevention control device and method thereof, wherein the device comprises: a terminal block; the temperature control switch is arranged in the wiring terminal module and is disconnected when the temperature of the wiring terminal in the wiring terminal module is higher than a first preset temperature; the indoor unit control board is provided with a compressor control end; the compressor control unit is connected with a compressor of the air conditioning system, the compressor control unit is connected with a compressor control end through a temperature control switch, the compressor control unit controls the compressor according to a control signal output by the compressor control end when the temperature control switch is turned on, and the compressor is controlled to be powered off when the temperature control switch is turned off. Therefore, when the temperature of the wiring terminal in the wiring terminal module is higher than the first preset temperature, the temperature control switch is turned off, and the compressor is controlled to be powered off through the compressor control unit, so that the wiring burning out or fire hidden danger caused by abnormal temperature of the wiring terminal is prevented, and the safety of the air conditioner is improved.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to an ignition preventing device of an air conditioning system, an ignition preventing method of the air conditioning system and the air conditioning system.
Background
Related air conditioning systems often generate fires due to poor contact between the wire holder and the power supply wire, indoor and outdoor connection wire joints and the like, wherein the reasons for such poor contact are divided into two types, one is an artificial factor, such as that an installer does not tighten the wire terminal, so that the contact area is small, a virtual wire connection phenomenon exists, and the other is natural aging, such as that the contact position is oxidized (rusted) after the wire connection terminal is used for a plurality of years, such as that oxidation is caused in a humid environment, an air environment close to kelp salt, and natural metal copper wires are exposed to the air. The contact resistance of the connecting terminal is increased due to poor contact or oxidation, for example, when the outdoor compressor is started, the starting current of the outdoor compressor is increased, and the resistance of the connecting terminal is high, the metal connecting terminal on the connecting terminal heats, so that the temperature is continuously increased, and the connecting wire burns out or fire hazards exist. However, the air conditioning system in the related art does not effectively detect the contact failure.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, a first object of the present invention is to provide an ignition prevention control apparatus for an air conditioning system, which can prevent burning of a wire or fire hazard caused by abnormal temperature of a wire connection terminal.
A second object of the present invention is to propose an air conditioning system.
A third object of the present invention is to provide a fire prevention control method of an air conditioning system.
To achieve the above object, an embodiment of a first aspect of the present invention provides an anti-fire control device for an air conditioning system, including: a terminal block; the temperature control switch is arranged in the wiring terminal module and is disconnected when the temperature of the wiring terminal in the wiring terminal module is higher than a first preset temperature; the indoor unit control board is provided with a compressor control end; the compressor control unit is connected with a compressor of the air conditioning system, the compressor control unit is connected with the compressor control end through the temperature control switch, and when the temperature control switch is turned on, the compressor control unit controls the compressor according to a control signal output by the compressor control end and when the temperature control switch is turned off, the compressor is controlled to be powered off.
According to the fire prevention control device of the air conditioning system, provided by the embodiment of the invention, the temperature control switch arranged in the wiring terminal module is disconnected when the temperature of the wiring terminal in the wiring terminal module is higher than a first preset temperature, the compressor control unit connected with the control end of the compressor through the temperature control switch controls the compressor according to the control signal output by the control end of the compressor when the temperature control switch is connected, and the compressor is controlled to be powered off when the temperature control switch is disconnected. Therefore, when the temperature of the wiring terminal in the wiring terminal module is higher than the first preset temperature, the temperature control switch is turned off, and the compressor is controlled to be powered off through the compressor control unit, so that the wiring burning out or fire hidden danger caused by abnormal temperature of the wiring terminal is prevented, and the safety of the air conditioner is improved.
In addition, the fire prevention control device of the air conditioning system according to the above embodiment of the present invention may further have the following additional technical features:
According to one embodiment of the invention, the compressor control unit comprises a relay, a coil of which is connected with the compressor control end through the temperature control switch, and a switch of which is connected with the compressor.
According to an embodiment of the present invention, the fire prevention control device of an air conditioning system further includes: the current detection unit is used for detecting the overall current of the air conditioning system; the indoor unit control board is connected with the current detection unit, and controls the compressor control end to stop outputting the control signal when the current of the whole machine is smaller than the preset current and lasts for a first preset time.
According to one embodiment of the invention, the temperature-controlled switch is re-engaged when the temperature of the connection terminal drops to a second preset temperature, wherein the device further comprises: the indoor unit control board is also used for controlling the air conditioning system to be shut down and controlling the display unit to send out alarm prompts when the turn-off times of the temperature control switch reach preset times.
According to one embodiment of the invention, the terminal module is provided with a compressor terminal, a live wire terminal and a zero wire terminal, wherein the compressor control unit is connected with the compressor through the compressor terminal, a live wire of a power supply is connected with the indoor unit control board through the live wire terminal, and a zero wire of the power supply is connected with the indoor unit control board through the zero wire terminal.
According to an embodiment of the invention, the first end of the switch of the relay is connected to the compressor via the compressor connection, wherein the live wire is further connected to the second end of the switch of the relay via the live wire connection, or the neutral wire is further connected to the second end of the switch of the relay via the neutral wire connection.
According to one embodiment of the invention, the current detection unit comprises a current transformer, and the current transformer is arranged beside a power line between the live wire wiring terminal and the indoor unit control board.
According to one embodiment of the invention, the compressor connection terminal is arranged adjacent to the live connection terminal.
According to one embodiment of the invention, the temperature-controlled switch is arranged opposite the compressor connection and/or the live connection.
To achieve the above object, a second aspect of the present invention provides an air conditioning system, which includes the fire prevention control device of the air conditioning system.
According to the air conditioning system provided by the embodiment of the invention, by adopting the fire prevention control device of the air conditioning system, the wire burning or fire hidden danger caused by abnormal temperature of the wire connecting terminal can be prevented, and the safety of the air conditioner is improved.
To achieve the above object, an embodiment of a third aspect of the present invention provides an anti-fire control method for an air conditioning system, the air conditioning system including a terminal module, a temperature control switch and an indoor unit control board, the temperature control switch being disposed in the terminal module, the indoor unit control board having a compressor control end, the method comprising the steps of: when the temperature control switch is turned on, the compressor is controlled by a control signal output by the control end of the compressor; the temperature control switch is disconnected when the temperature of a connecting terminal in the connecting terminal module is higher than a first preset temperature; and when the temperature control switch is turned off, the compressor is controlled to be powered off.
According to the fire prevention control method of the air conditioning system, when the temperature control switch is turned on, the compressor is controlled by the control signal output by the control end of the compressor, and when the temperature of the connecting terminal in the connecting terminal module is higher than the first preset temperature, the temperature control switch is turned off, and when the temperature control switch is turned off, the compressor is controlled to be powered off. Therefore, when the temperature of the wiring terminal in the wiring terminal module is higher than the first preset temperature, the temperature control switch is turned off, and the compressor is controlled to be powered off through the compressor control unit, so that the wiring burning out or fire hidden danger caused by abnormal temperature of the wiring terminal can be prevented, and the safety of the air conditioner is improved.
In addition, the fire prevention control method of the air conditioning system according to the above embodiment of the present invention may further have the following additional technical features:
According to one embodiment of the present invention, the fire prevention control method of an air conditioning system further includes: detecting the whole machine current of the air conditioning system; and when the current of the whole machine is smaller than the preset current and lasts for a first preset time, the control end of the compressor is controlled to stop outputting the control signal.
According to one embodiment of the invention, the temperature-controlled switch is re-engaged when the temperature of the connection terminal drops to a second preset temperature, wherein the method further comprises: when the turn-off times of the temperature control switch reach the preset times, the air conditioning system is controlled to be turned off and an alarm prompt is sent out.
Drawings
Fig. 1 is a block schematic diagram of an anti-fire control device of an air conditioning system according to an embodiment of the present invention;
Fig. 2 is a front view of a terminal module in an anti-fire control device of an air conditioning system according to an embodiment of the present invention;
fig. 3 is a rear view of a terminal module in an anti-fire control device of an air conditioning system according to an embodiment of the present invention;
FIG. 4 is a block schematic diagram of an anti-fire control device of an air conditioning system according to one embodiment of the present invention;
Fig. 5 is a block schematic diagram of an anti-fire control device of an air conditioning system according to another embodiment of the present invention;
Fig. 6 is a block schematic diagram of an anti-fire control device of an air conditioning system according to still another embodiment of the present invention;
FIG. 7 is a block schematic diagram of an anti-fire control device of an air conditioning system according to one embodiment of the present invention;
Fig. 8 is a schematic structural view of an anti-fire control device of an air conditioning system according to an embodiment of the present invention;
FIG. 9 is a block schematic diagram of an air conditioning system according to an embodiment of the present invention;
fig. 10 is a flowchart of a fire prevention control method of an air conditioning system according to an embodiment of the present invention;
FIG. 11 is a flowchart of a fire prevention control method of an air conditioning system according to one embodiment of the present invention; and
Fig. 12 is a flowchart illustrating a fire prevention control method of an air conditioning system according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
An air conditioning system and a fire prevention control device and method thereof according to embodiments of the present invention are described below with reference to the accompanying drawings.
As shown in fig. 1 to 3, an anti-fire control device 100 of an air conditioning system according to an embodiment of the present invention includes: the indoor unit comprises a wiring terminal module 1, a temperature control switch 2, an indoor unit control board 3 and a compressor control unit 4.
The temperature control switch 2 is arranged in the wiring terminal module 1, and the temperature control switch 2 is disconnected when the temperature of the wiring terminal 11 in the wiring terminal module 1 is higher than a first preset temperature; the indoor unit control board 3 has a compressor control end 31; the compressor control unit 4 is connected with the compressor M1 of the air conditioning system, the compressor control unit 4 is connected with the compressor control end 31 through the temperature control switch 2, the compressor control unit 4 controls the compressor M1 according to a control signal output by the compressor control end 31 when the temperature control switch 2 is turned on, and controls the compressor M1 to be powered off when the temperature control switch 2 is turned off.
The trigger off temperature of the temperature control switch 2 may be set according to the ignition temperature point of the connection terminal 11. In particular, the trigger off temperature may preferably be 55 ℃ to 110 ℃.
It should be noted that, the terminal module 1, the temperature control switch 2, the indoor unit control board 3 and the compressor control unit 4 may be disposed in an indoor unit of the air conditioning system, and the compressor M1 may be disposed in an outdoor unit of the air conditioning system.
Specifically, as shown in fig. 2 and 3, the temperature control switch 2 is provided below the terminal 11, that is, the terminal 11 is provided at the upper layer of the terminal module 1, and the temperature control switch 2 is provided at the lower layer of the terminal 11. When the wiring terminal 11 is in poor contact, the wiring terminal 11 generates heat, the temperature of the wiring terminal 11 rises, when the temperature of the wiring terminal 11 rises to a first preset temperature, namely, the temperature is close to the ignition temperature point of the wiring terminal 11, the temperature control switch 2 is triggered to trip, and when the temperature control switch 2 is disconnected, the compressor control unit 4 controls the compressor M1 to lose power so as to stop running.
Therefore, when the temperature of the wiring terminal in the wiring terminal module is higher than the first preset temperature, the temperature control switch is turned off, and the compressor is controlled to be powered off through the compressor control unit, so that the hidden danger of burning out or firing of the wiring caused by abnormal rising of the temperature of the wiring terminal is prevented.
According to an embodiment of the present invention, as shown in fig. 7, the terminal module 1 has a compressor terminal, a live wire terminal and a neutral wire terminal, wherein the compressor control unit 4 is connected to the compressor M1 through the compressor terminal, the live wire 12 of the power supply is connected to the indoor unit control board 3 through the live wire terminal, and the neutral wire 13 of the power supply is connected to the indoor unit control board 3 through the neutral wire terminal. Wherein, compressor binding post sets up with live wire binding post is adjacent, and temperature detect switch 2 sets up with compressor binding post and/or live wire binding post relatively, from this, sets up temperature detect switch 2 in key binding post 11 i.e. compressor binding post and/or live wire binding post below to can prevent the wiring burning out or fire hidden danger more effectively.
Further, according to an embodiment of the present invention, as shown in fig. 4 and 8, the compressor control unit 4 includes a relay 41, a coil of the relay 41 is connected to the compressor control terminal 31 through a temperature control switch 2, and a switch of the relay 41 is connected to the compressor M1, wherein the switch of the relay 41 is used to control the compressor M1 to be powered on or off.
That is, the compressor control unit 4 is connected to the compressor control terminal 31 through the temperature control switch 2 via the coil of the relay 41, and when the temperature control switch 2 is turned off, the coil of the relay 41 is deenergized, and the switch of the relay 41 is turned off, thereby deenergizing the compressor M1 and stopping the operation.
According to an embodiment of the invention, as shown in fig. 8, the first end of the switch of the relay 41 is connected through the second end of the compressor connection terminal, or the neutral wire is also connected through the neutral wire connection terminal to the second end of the switch of the relay 41. Thus, the opening of the switch of the relay 41 can power off the compressor M1.
Further, according to an embodiment of the present invention, as shown in fig. 5 to 8, the fire prevention control apparatus 100 of an air conditioning system further includes: and the current detection unit 5 is used for detecting the whole machine current of the air conditioning system. The indoor unit control board 3 is connected to the current detecting unit 5, and when the current of the whole machine is smaller than the preset current and lasts for a first preset time, the indoor unit control board 3 controls the compressor control end 31 to stop outputting the control signal.
Specifically, the preset current may be set according to the overall current when the compressor M1 is operating normally, and the first preset time may be set according to the time required for determining that the temperature control switch 2 is turned off.
That is, after the temperature control switch 2 is turned off, the compressor M1 is turned off and stops operating, at this time, the indoor unit control board 3 detects that the overall current is reduced to be smaller than the preset current, that is, the normal compressor current through the current detection unit 5, and then the temperature control switch 2 is considered to be excessively turned off to cause the abnormal skip stop of the compressor M1, the first preset time is delayed, if it is judged again that the overall current is reduced to be smaller than the preset current through the current detection unit 5, the temperature control switch 2 at the connection terminal 11 is confirmed to be turned off, fire protection is entered, and the indoor unit control board 3 turns off the compressor control end 31.
According to an embodiment of the present invention, as shown in fig. 7 and 8, the current detecting unit 5 may include a current transformer, which may be disposed beside a power line between the live wire connection terminal and the indoor unit control board 3 to detect the magnitude of the current in the line.
Still further, according to an embodiment of the present invention, when the temperature of the connection terminal 11 drops to the second preset temperature, the temperature-controlled switch 2 is re-engaged, wherein, as shown in fig. 6-8, the apparatus 100 further comprises: the display unit 6, the display unit 6 and the indoor unit control board 3, wherein, the indoor unit control board 3 is also used for controlling the shutdown of the air conditioning system and controlling the display unit 6 to send out alarm prompt when the turn-off times of the temperature control switch 2 reach the preset times.
It should be noted that the actuation temperature of the temperature control switch 2 may be set according to the temperature range of the connection terminal 11 during normal operation of the air conditioning system, and specifically, the actuation temperature of the temperature control switch 2 may be preferably 40 ℃ to 70 ℃. In addition, in a specific example of the present invention, the preset number of times may be preferably 2 or more times, and the display unit 6 may be a display screen.
Specifically, after the compressor M1 is stopped for a period of time, the temperature control switch 2 and the connection terminal 11 are cooled down by heat dissipation with air, and when the temperature of the connection terminal 11 is reduced to a second preset temperature, the temperature control switch 2 is automatically re-closed. After the temperature control switch 2 is closed again for a second preset time, the indoor unit control board 3 starts the compressor M1 again through the compressor control end 31, and the compressor M1 starts normally again.
When the starting current of the compressor M1 increases and the contact of the connection terminal 11 is not good (i.e., the contact resistance is too large), the connection terminal 11 heats again to cause the temperature control switch 2 to be turned off again, the compressor M1 is powered off after the temperature control switch 2 is turned off, and when the compressor M1 is powered off and stops running, the current detection unit 5 detects that the current decreases to be smaller than the preset current, and the indoor unit control board 3 controls the compressor control end 31 to stop outputting the control signal. After the above process is performed for a preset number of times, it can be considered that the poor contact of the connection terminal 11 causes the disconnection of the temperature control switch 2, so that the operation of the compressor M1 is stopped, and the hidden danger of heating and ignition exists in the connection terminal 11, at this time, the indoor unit control board 3 controls the air conditioning system to be shut down for shutdown protection, and controls the display unit 6 to send out an alarm prompt, for example, to display a fault code or a fault icon to flash, so as to prompt a user to overhaul. Therefore, misjudgment of electric control is avoided through multiple judgment.
The operation of the fire control device 100 according to the embodiment of the present invention will be described in detail with reference to a specific embodiment.
Taking a fixed-frequency air conditioning system, such as a fixed-frequency split air conditioner, for example, the overall current I of the air conditioner is 8A when the air conditioner operates normally, assuming that the terminal module 1 is used in coastal areas, the oxidation resistance R is 0.5 Ω due to the condition that the terminals are oxidized by salt in the air in the coastal areas, so that when the compressor is started, the heating power at the terminal 11 is p=iχ8a=8aχ0.5Ω=32w (i.e., the heating power at the terminal 11 is 32W), the current use environment of the air conditioner is 30 ℃, and accordingly, the trigger off temperature of the temperature control switch 2 is preset to 65 ℃ and the actuation temperature is preset to 53 ℃.
After normal power-on, the indoor unit control board 3 controls the operation of the compressor M1 through the compressor control end 31. As shown in fig. 8, at this time, the temperature control switch 2 is turned on at normal temperature, for example, 30 ℃, the indoor unit control board 3 controls the relay 41 to be attracted through the compressor control end 31, so that the power supply is further transmitted to the compressor M1, the compressor M1 operates, at this time, the indoor unit control board 3 detects that the current is 8A through the current detection unit 5 (i.e. the current transformer 51), and the indoor unit control board 3 determines that the compressor M1 is started normally.
If the connection terminal 11 heats according to the heating power 32W after the compressor M1 is attracted, the temperature control switch 2 rises from 32 ℃ to the trigger cut-off temperature 65 ℃, and at the moment, the temperature control switch 2 is cut off, so that the relay 41 is powered off, and the compressor M1 is powered off. At this time, the indoor unit control board 3 detects that the current is changed from 8A to 0.5A through the current transformer 51, and can determine that the temperature control switch 2 is overheated and jumped to stop, and after the current is confirmed to be smaller than the preset current in the first preset time, the indoor unit control board 3 controls the compressor control end 31 to output a signal for stopping the compressor.
After a period of time, for example, 2 minutes and 30 seconds, the temperature control switch 2 and the connection terminal 11 may be lowered from 65 ℃ to 53 ℃, the temperature control switch 2 is changed from the off state to the on state, the indoor unit control board 3 outputs a compressor starting signal through the compressor control terminal 31 after the temperature control switch 2 is on for a second preset period of time, for example, 3 minutes, the relay 41 is on again, the compressor M1 is powered on to operate, and the current detection unit 5 detects that the current is 8A. However, since the connection terminal 11 has a contact resistance (i.e. heating power 32W), the temperature control switch 2 is further raised to the off temperature of 65 ℃, and the compressor M1 is powered off again to stop operation as described above, at this time, the current detection unit 5 detects that the current is 0.5A, and the indoor unit control board 3 can determine that the temperature control switch 2 is operated, and close the output of the compressor control port 31.
Since the overheat skip of the temperature control switch 2 in the terminal module 1 has occurred 2 consecutive times, it may be determined that the contact resistance of the terminal 11 is excessively large, the indoor unit control board 3 controls the air conditioning system to be turned off to enter a shutdown protection state, and outputs a display fault code such as "P6" through the display unit 6 to remind the user of overhauling the air conditioner.
In summary, according to the fire prevention control device of the air conditioning system provided by the embodiment of the invention, the temperature control switch arranged in the wiring terminal module is turned off when the temperature of the wiring terminal in the wiring terminal module is greater than the first preset temperature, the compressor control unit connected with the control end of the compressor through the temperature control switch controls the compressor according to the control signal output by the control end of the compressor when the temperature control switch is turned on, and the compressor is controlled to be powered off when the temperature control switch is turned off. Therefore, when the temperature of the wiring terminal in the wiring terminal module is higher than the first preset temperature, the temperature control switch is turned off, and the compressor is controlled to be powered off through the compressor control unit, so that the wiring burning out or fire hidden danger caused by abnormal temperature of the wiring terminal is prevented, and the safety of the air conditioner is improved.
Fig. 9 is a block schematic diagram of an air conditioning system according to an embodiment of the present invention. As shown in fig. 9, the air conditioning system 1000 includes the fire prevention control device 100 of the air conditioning system according to the above embodiment.
According to the air conditioning system provided by the embodiment of the invention, by adopting the fire prevention control device of the air conditioning system, the wire burning or fire hidden danger caused by abnormal temperature of the wire connecting terminal can be prevented, and the safety of the air conditioner is improved.
Based on the fire prevention device of the air conditioning system, the embodiment of the invention provides a fire prevention control method of the air conditioning system.
Fig. 10 is a flowchart of an anti-fire control method of an air conditioning system according to an embodiment of the present invention, wherein the air conditioning system includes a terminal module, a temperature control switch and an indoor unit control board, the temperature control switch is disposed in the terminal module, the indoor unit control board has a compressor control end, and as shown in fig. 10, the control method includes the steps of:
s101, controlling the compressor by a control signal output by a control end of the compressor when the temperature control switch is turned on.
That is, when the temperature control switch is turned on after the air conditioner is powered on, the indoor control board can output a control signal to the compressor through the compressor control end so as to control the compressor to normally operate.
S102, the temperature control switch is turned off when the temperature of the connecting terminal in the connecting terminal module is larger than a first preset temperature.
That is, when the temperature of the terminal in the terminal module is greater than the first preset temperature, the temperature control switch is turned off, so that the burning of the resistance wire or the fire hazard caused by the excessively high temperature of the terminal is avoided.
S103, controlling the compressor to be powered off when the temperature control switch is turned off.
That is, the compressor is controlled to be energized and de-energized by the relay. When the temperature control switch is turned off, the indoor control board controls the switch of the control relay at the control end of the compressor to be turned off so as to power off the compressor.
According to an embodiment of the present invention, as shown in fig. 11, the fire prevention control method of the air conditioning system further includes:
s104, detecting the whole machine current of the air conditioning system.
That is, the whole current in the air conditioning system circuit can be detected by the current detection unit, i.e., the current transformer, to further control the compressor in the air conditioning system.
S105, when the current of the whole machine is smaller than the preset current and lasts for the first preset time, the control end of the compressor is controlled to stop outputting the control signal.
That is, the current of the whole machine is always smaller than the preset current within the first preset time, and the temperature control switch can be considered to stop after the temperature is exceeded, so that the control end of the compressor is controlled to stop outputting the control signal.
Further, according to the fire prevention control method of the air conditioning system of the embodiment of the invention, when the temperature of the connection terminal is reduced to the second preset temperature, the temperature control switch is re-engaged, wherein the method further comprises:
And S106, when the turn-off times of the temperature control switch reach the preset times, controlling the air conditioning system to be turned off and sending out an alarm prompt.
That is, when the temperature control switch is turned off for a plurality of times and reaches the preset times, the air conditioning system can be controlled to be turned off, and an alarm prompt is sent out to remind a user to overhaul the air conditioning system.
For example, as shown in fig. 12, the fire prevention control method of the air conditioning system specifically includes the following steps:
s201, after entering the control program, judging whether the allowable starting time is reached.
If yes, go to step S202; if not, step S201 is repeatedly performed.
S202, controlling the start of the compressor through a compressor control end. That is, the delay allows the start-up time to be followed by control of the compressor start-up for compressor delay protection.
S203, detecting the whole machine current such as the compressor current through the current transformer, and judging whether the compressor current detected by the current transformer reaches the normal starting current.
If yes, go to step S204; if not, step S202 is performed.
S204, the temperature of the connecting terminal rises, and whether the temperature control switch is turned off is judged, wherein the temperature control switch is turned off when the temperature of the connecting terminal is higher than a first preset temperature.
If yes, step S205 is performed; if not, step S204 is repeatedly performed.
S205, the coil of the relay is powered off, and the switch of the relay is opened.
S206, stopping when the compressor is powered off.
S207, detecting the current of the compressor through a current transformer, and judging whether the current of the compressor is smaller than a preset current.
If yes, go to step S208; if not, step S204 is performed.
S208, adding 1 time to the overheat abnormal jump stop frequency of the wiring terminal.
S209, outputting a signal for stopping the compressor through a compressor control end.
S210, judging whether the overheat abnormal jump stop frequency of the wiring terminal is larger than the preset frequency.
If yes, go to step S212; if not, step S211 is performed.
S211, after waiting for the temperature control switch to cool down, recovering the suction, and executing step S201.
S212, displaying an alarm.
In summary, according to the fire prevention control method of the air conditioning system provided by the embodiment of the invention, when the temperature control switch is turned on, the control signal output by the control end of the compressor is used for controlling the compressor, when the temperature of the connecting terminal in the connecting terminal module is higher than the first preset temperature, the temperature control switch is turned off, and when the temperature control switch is turned off, the compressor is controlled to be powered off. Therefore, when the temperature of the wiring terminal in the wiring terminal module is higher than the first preset temperature, the temperature control switch is turned off, and the compressor is controlled to be powered off through the compressor control unit, so that the wiring burning out or fire hidden danger caused by abnormal temperature of the wiring terminal can be prevented, and the safety of the air conditioner is improved.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (9)
1. An ignition prevention control apparatus of an air conditioning system, comprising:
The wiring terminal module is provided with a compressor wiring terminal, a live wire wiring terminal and a zero wire wiring terminal;
the temperature control switch is arranged in the wiring terminal module and is disconnected when the temperature of the wiring terminal in the wiring terminal module is higher than a first preset temperature; the temperature control switch is arranged below the wiring terminal;
The indoor unit control board is provided with a compressor control end, a live wire of a power supply is connected with the indoor unit control board through the live wire connecting terminal, and a zero wire of the power supply is connected with the indoor unit control board through the zero wire connecting terminal;
The compressor control unit comprises a relay, a coil of the relay is connected with a control end of the compressor through the temperature control switch, a first end of a switch of the relay is connected with the compressor through a compressor wiring terminal, a live wire is also connected with a second end of the switch of the relay through the live wire wiring terminal, or a zero wire is also connected with the second end of the switch of the relay through the zero wire wiring terminal, and the relay controls the compressor according to a control signal output by the control end of the compressor when the temperature control switch is turned on and controls the compressor to be powered off when the temperature control switch is turned off;
The current detection unit is used for detecting the whole machine current of the air conditioning system, the indoor unit control board is connected with the current detection unit, and the indoor unit control board controls the compressor control end to stop outputting the control signal when the whole machine current is smaller than a preset current and lasts for a first preset time.
2. The fire prevention control device of an air conditioning system according to claim 1, wherein the temperature control switch is re-engaged when the temperature of the connection terminal falls to a second preset temperature, wherein the device further comprises:
The indoor unit control board is also used for controlling the air conditioning system to be shut down and controlling the display unit to send out alarm prompts when the turn-off times of the temperature control switch reach preset times.
3. The fire prevention control device of an air conditioning system according to claim 1, wherein the current detection unit includes a current transformer provided beside a power line between the live wire connection terminal and the indoor unit control board.
4. The fire prevention control device of an air conditioning system according to claim 1, wherein the compressor connection terminal is disposed adjacent to the fire wire connection terminal.
5. The fire prevention control device of an air conditioning system according to claim 1, wherein the temperature control switch is provided with respect to the compressor connection terminal and/or the fire wire connection terminal.
6. An air conditioning system comprising the fire prevention control device of an air conditioning system according to any one of claims 1 to 5.
7. A fire prevention control method of an air conditioning system, characterized by being applied to the fire prevention control device of an air conditioning system according to any one of claims 1 to 5, the method comprising the steps of:
when the temperature control switch is turned on, the compressor is controlled by a control signal output by the control end of the compressor;
The temperature control switch is disconnected when the temperature of a connecting terminal in the connecting terminal module is higher than a first preset temperature;
And when the temperature control switch is turned off, the compressor is controlled to be powered off.
8. The fire prevention control method of an air conditioning system according to claim 7, further comprising:
detecting the whole machine current of the air conditioning system;
And when the current of the whole machine is smaller than the preset current and lasts for a first preset time, the control end of the compressor is controlled to stop outputting the control signal.
9. The fire prevention control method of an air conditioning system according to claim 8, wherein the temperature control switch is re-engaged when the temperature of the connection terminal falls to a second preset temperature, wherein the method further comprises:
When the turn-off times of the temperature control switch reach the preset times, the air conditioning system is controlled to be turned off and an alarm prompt is sent out.
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| CN201810076610.8A CN108266855B (en) | 2018-01-26 | 2018-01-26 | Air conditioning system and fire prevention control device and method thereof |
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| CN201810076610.8A CN108266855B (en) | 2018-01-26 | 2018-01-26 | Air conditioning system and fire prevention control device and method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109236627A (en) * | 2018-09-10 | 2019-01-18 | 珠海格力电器股份有限公司 | Compressor protection circuit, circuit system and air conditioner |
| CN109882989B (en) * | 2019-02-18 | 2022-02-08 | 广东美的制冷设备有限公司 | Air conditioner and control method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001074294A (en) * | 1999-09-06 | 2001-03-23 | Sanyo Electric Co Ltd | Controller for air conditioner |
| CN202361722U (en) * | 2011-09-22 | 2012-08-01 | 合肥美的荣事达电冰箱有限公司 | Control device of refrigeration system and refrigeration apparatus having the same |
| CN207778705U (en) * | 2018-01-26 | 2018-08-28 | 广东美的制冷设备有限公司 | Air-conditioning system and its anti-control device on fire |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6287227B2 (en) * | 2014-01-10 | 2018-03-07 | 株式会社デンソーウェーブ | Air conditioning controller |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001074294A (en) * | 1999-09-06 | 2001-03-23 | Sanyo Electric Co Ltd | Controller for air conditioner |
| CN202361722U (en) * | 2011-09-22 | 2012-08-01 | 合肥美的荣事达电冰箱有限公司 | Control device of refrigeration system and refrigeration apparatus having the same |
| CN207778705U (en) * | 2018-01-26 | 2018-08-28 | 广东美的制冷设备有限公司 | Air-conditioning system and its anti-control device on fire |
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