CN212623656U - Novel split air conditioner controller - Google Patents

Abstract

The utility model discloses a novel split air conditioner controller, which comprises a timing switch circuit, an overcurrent protection circuit and a temperature monitoring circuit, wherein the timing switch circuit is electrically connected with two access ends of alternating current, the timing switch circuit comprises a UPS power supply and a timing switch which are used for independently supplying power for a control panel of the split air conditioner, a normally open contact of the timing switch is connected with a third relay in series at the two access ends of the alternating current, and a first normally open contact of the third relay is further connected into an evaporator fan of the air conditioner and a power control loop of a compressor; the utility model realizes the automatic restart of the split air conditioner when power is lost through the timing switch circuit; the fault power-off protection of the split air conditioner is realized through the overcurrent protection circuit; the temperature monitoring circuit is used for stopping using the air conditioner at night or starting the exhaust fan in the machine room when the air conditioner fails to send a signal, so that the temperature of the elevator machine room is lowered emergently.

Description

Novel split air conditioner controller

Technical Field

The utility model relates to an elevator machine room air conditioner heat dissipation field especially relates to a novel components of a whole that can function independently air conditioner controller.

Background

The main reasons for the temperature rise in the elevator machine room are high outdoor temperature (for example, the direct solar radiation increases the indoor temperature), heat release of a brake resistor on a control cabinet of the elevator machine room, heating of a motor host and the like. The national standard temperature of an elevator machine room is 5-40 ℃, and when the actual temperature exceeds the allowable temperature (40 ℃) of the machine room, the motor continuously operates in a high-temperature environment, so that coils are easily burnt out, and the motor is easily damaged. The microcomputer control board of the elevator or the electronic device on the PLC needs to carry out logic control through voltage and current comparison, and respond and execute external instructions. Due to the material temperature characteristics of the electronic device, the logic judgment of the electronic device can be wrong when the temperature is higher than the allowable temperature, and the microcomputer control board is unstable. The elevator is easy to break down, and normal operation is affected (for example, people are trapped when the elevator is stopped suddenly in normal operation, the elevator does not open or close the door when the elevator is operated to the door zone, and the speed of the elevator cannot be changed when the elevator is operated to the door zone, etc.).

In order to make the temperature of the elevator machine room within the national standard temperature range (5-40 ℃), a split air conditioner is usually installed in the elevator machine room to achieve the purpose of cooling. The split air conditioner at the present stage only has a single timing start/stop function, although an outdoor compressor of the air conditioner stops running under the control of a timer, if a power switch is tripped and a power failure occurs or a power failure is maintained by a power supply bureau, the split air conditioner does not have a power-on restart function after the complete machine of the split air conditioner loses power and supplies power again, and the timer cannot instruct start. When the split air conditioner fails, the split air conditioner cannot be protected by current limiting, the split air conditioner is easily damaged, and after the split air conditioner fails and stops working, emergency heat dissipation cannot be performed in the elevator machine room, so that the temperature in the elevator machine room is overhigh.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a novel split air conditioner controller, can not restart automatically after solving split air conditioner and losing the electricity, can not emergent radiating problem behind current-limiting protection, the split air conditioner trouble when the split air conditioner trouble.

For solving above-mentioned technical problem, the utility model discloses a technical scheme provide a novel components of a whole that can function independently air conditioner controller, include the timing switch circuit of being connected with two incoming end electricity of alternating current, overcurrent protection circuit and temperature monitoring circuit, timing switch circuit includes UPS power and the time switch that carries out independent power supply for the components of a whole that can function independently air conditioner control panel, and the normally open contact of time switch concatenates two incoming ends of alternating current with the third relay again, and the first normally open contact of third relay further inserts the evaporator fan of air conditioner and the power control return circuit of compressor.

Preferably, the overcurrent protection circuit comprises a current upper and lower limit controller for disconnecting the circuit after the current exceeds a limit value, one end of the current upper and lower limit controller is connected with a zero line end of alternating current, the other end of the current upper and lower limit controller is sequentially connected with a second normally open contact of a third relay and a normally closed contact of a first relay in series, and the normally closed contact of the first relay is connected to an evaporator fan of the air conditioner and a power control loop of a compressor;

the overcurrent protection circuit further comprises a first relay electrically connected with a zero line end of alternating current, the other end of the first relay is connected with a normally open contact of the upper and lower current limit controllers in series, and the other end of the normally open contact of the upper and lower current limit controllers is electrically connected with a joint of the normally closed contact of the first relay in the overcurrent protection circuit and the power control circuit.

Preferably, the overcurrent protection circuit further comprises a normally closed contact of a second relay connected in series with the normally closed contact of the first relay, the normally closed contact of the second relay is connected in series with the normally open contact of a fourth relay, and the other end of the normally open contact of the fourth relay is electrically connected with a live wire end of alternating current;

the overcurrent protection circuit also comprises a first point action switch connected with the normally open contact of the upper and lower current limit controllers in series, and the other end of the first point action switch is electrically connected with the joint of the normally closed contact of the second relay and the normally closed contact of the first relay in the overcurrent protection circuit.

Preferably, in the overcurrent protection circuit, the overcurrent protection circuit further comprises a seventh relay, one end of the seventh relay is electrically connected with a zero line end of alternating current, the other end of the seventh relay is connected with a first normally open contact of the first relay and is connected to a joint of the normally open contacts of the first relay and the current upper and lower limit controller, and the other end of the first normally open contact of the first relay is connected to a joint of the normally open contact of the current upper and lower limit controller and the first actuating switch.

Preferably, the temperature monitoring circuit comprises a temperature controller, the temperature controller is electrically connected with a working power supply of the temperature controller, two incoming ends of alternating current are electrically connected with two ends of the working power supply of the temperature controller, the temperature monitoring circuit is connected with an exhaust fan, one end of the exhaust fan is connected with a zero line end of the alternating current, the other end of the exhaust fan is connected with a normally open contact of the temperature controller in series, and the other end of the normally open contact of the temperature controller is electrically connected with a live wire end of the alternating current.

Preferably, the temperature monitoring circuit further comprises a normally closed contact of a third relay connected in series with the normally open contact of the temperature controller, and the other end of the normally closed contact of the third relay is connected with a live wire end of the alternating current;

the temperature monitoring circuit also comprises a normally open contact of a sixth relay which is connected in parallel with the normally closed contact of the third relay;

the temperature monitoring circuit further comprises a sixth relay connected with a zero line end of alternating current, the sixth relay is sequentially connected with second normally open contacts of the first relays in series, and the second normally open contact of the first relay at the tail end is electrically connected with a live wire end of the alternating current.

Preferably, the split air conditioner controller further comprises an alarm circuit, the alarm circuit comprises a first indicator light connected with two ends of the alternating current, a second indicator light and a third normally open contact of the first relay are connected between the two ends of the alternating current in series, a buzzer is connected between the two ends of the second indicator light in parallel, and a toggle switch is connected with the buzzer in series.

Preferably, the split air conditioner controller further comprises a test run circuit, wherein the test run circuit comprises a second relay, a second inching switch and a time relay normally closed contact;

one end of the second relay is connected with a zero line end of alternating current, the other end of the second relay is sequentially connected with the second inching switch and the normally closed contact of the time relay in series, the other end of the normally closed contact of the time relay is connected with a live line end of the alternating current, and the two ends of the second inching switch are also connected with the first normally open contact of the second relay in parallel;

the split air conditioner controller also comprises a time relay, one end of the time relay is connected with a zero line end of alternating current, the other end of the time relay is connected with a second normally open contact of a second relay in series, and the other end of the second normally open contact of the second relay is connected with a live wire end of the alternating current.

Preferably, the terminal of the control panel of the split air conditioner for the compressor is also connected in series with a fourth relay, the other end of the fourth relay is electrically connected with the UPS, and in the power control loop, the normally open contact of the fourth relay is connected in series with a circuit between the normally closed contact of the seventh relay and the compressor.

Preferably, a terminal of the control panel of the split air conditioner for controlling the evaporator fan is also connected in series with a fifth relay, the other end of the fifth relay is electrically connected with the UPS, and in the power control loop, a normally open contact of the fifth relay is connected in series with a circuit between a normally closed contact of the seventh relay and the evaporator fan.

The utility model realizes the automatic restart of the split air conditioner when power is lost through the timing switch circuit; the fault power-off protection of the split air conditioner is realized through the overcurrent protection circuit; realize stopping to use the air conditioner or when the air conditioner trouble signals through temperature monitoring circuit night, through the exhaust fan in temperature monitoring circuit start computer lab, realize the emergent cooling of elevator computer lab temperature, furthest has ensured that the room temperature in the elevator computer lab is unlikely to too high, can also realize the work of stopping the exhaust fan when the computer lab temperature of night is too low simultaneously.

Drawings

FIG. 1 is a schematic circuit diagram of an embodiment of a split air conditioner controller;

fig. 2 is a schematic circuit diagram of another embodiment of the split air conditioner controller.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Fig. 1 and 2 show schematic circuit diagrams of an embodiment of the split air conditioner controller according to the present invention.

Including the timing switch circuit with two incoming end electricity of alternating current are connected, overcurrent protection circuit and temperature monitoring circuit, the timing switch circuit includes the UPS power and the timing switch KT that carry out independent power supply for split air conditioner control panel KZ, timing switch KT's normally open contact KT1 again with third relay KA3 concatenate two incoming end of alternating current, the first normally open contact KA301 of third relay KA3 further inserts the evaporator fan M1 of air conditioner and compressor M2's power control return circuit.

The UPS power supply is electrically connected with a switching power supply U2, the switching power supply U2 is connected with an alternating current input end, and the switching power supply U2 enables the UPS power supply to supply power to a split air conditioner control panel KZ of the split air conditioner. The control panel KZ of the split air conditioner comprises a loop for controlling the fan of the evaporator and a loop for controlling the compressor, and the loop for controlling the fan of the evaporator comprises a high-H, medium-M and low-L circuit for controlling the size of the fan of the evaporator.

The timing switch KT is a control device which takes a singlechip microprocessor as a core and is matched with an electronic circuit to form, and the timing switch KT can be used for opening or closing a normally open contact KT1 of the timing switch KT in a set time period in an 'on' or 'off' state and can be executed circularly. After the timing switch KT sends a 'starting-up' signal, the normally open contact KT1 of the timing switch KT is closed to enable the control end of the third relay KA3 to be electrified, and then the normally open contact KA301 of the third relay KA3 is closed to enable the power control loop of the evaporator fan M1 and the power control loop of the compressor M2 to be electrified and started.

When the timing switch KT generates a shutdown signal, the normally open contact KT1 is disconnected, the third relay KA3 loses power, and after the third relay KA3 loses power, the normally open contact of the third relay KA3 is disconnected, so that the power control loops of the evaporator fan M1 and the compressor M2 of the air conditioner are powered off, and the evaporator fan M1 and the compressor M2 of the air conditioner are turned off.

Further, as shown in fig. 1 and fig. 2, the overcurrent protection circuit includes a current upper and lower limit controller DK for disconnecting the circuit after the current exceeds a limit value, one end of the current upper and lower limit controller DK is connected to a zero line terminal N of the alternating current, and the other end is connected in series to the second normally open contact KA302 of the third relay KA3 and the normally closed contact KA101 of the first relay KA1 in sequence.

The overcurrent protection circuit further comprises a first relay KA1 electrically connected with a zero line end N of alternating current, the other end of the first relay KA1 is connected with a normally open contact DK1 of the upper and lower limit current controller DK in series, and the other end of the normally open contact DK1 of the upper and lower limit current controller DK is electrically connected with the joint of the normally closed contact KA101 of the first relay KA1 in the overcurrent protection circuit and the power control loop.

In the overcurrent protection circuit, after a first normally open contact KA301 of a third relay KA3 is closed, a current upper and lower limit controller DK, an evaporator fan M1 and a compressor M2 of the air conditioner and alternating current form a closed loop, so that the evaporator fan M1 and the compressor M2 of the air conditioner are started by power.

When the operating current through the upper and lower current limit controller DK is higher or lower than a set value, for example, when the air conditioning system is overloaded or blocked, the current thereof may be higher than the normal value range. The upper and lower limit controller DK of electric current just sends a signal, and normally open contact DK1 of upper and lower limit controller DK of electric current is closed, makes first relay KA1 electrified, and after first relay KA1 electrified, normally closed contact KA101 disconnection of first relay KA1 made upper and lower limit controller DK stall of electric current.

Meanwhile, the first normally open contact KA102 of the first relay KA1 is closed, so that the first relay KA1 and the seventh relay KA7 are electrified. The evaporator fan M1 and the compressor M2 stop running.

Further, as shown in fig. 1 and fig. 2, the overcurrent protection circuit further includes a normally closed contact KA201 of the second relay KA2 connected in series with the normally closed contact KA101 of the first relay KA1, the normally closed contact KA201 of the second relay KA2 is connected in series with the normally open contact KA401 of the fourth relay KA4, and the other end of the normally open contact KA401 of the fourth relay KA4 is electrically connected to a live wire end L of alternating current.

The overcurrent protection circuit further comprises a first actuating switch AN1 connected in series with a normally open contact DK1 of the upper and lower current limit controller DK, and the other end of the first actuating switch AN1 is electrically connected with the joint of a normally closed contact KA201 of a second relay KA2 and a normally closed contact KA101 of a first relay KA1 in the overcurrent protection circuit.

Further, as shown in fig. 1 and fig. 2, the overcurrent protection circuit further includes a seventh relay KA7, one end of the seventh relay KA7 is electrically connected to a zero line end N of alternating current, the other end of the seventh relay KA7 is connected to the first normally open contact KA102 of the first relay KA1 and is connected to a joint of the first relay KA1 and the normally open contact DK1 of the upper and lower current limit controller DK, and the other end of the first normally open contact KA102 of the first relay KA1 is connected to a joint of the normally open contact DK1 of the upper and lower current limit controller DK and the first actuating switch AN 1.

When the running current passing through the upper and lower limit current controller DK is higher than or lower than a set value, the first relay KA1 and the seventh relay KA7 can be powered on and work at the same time, the normally open contact DK1 of the upper and lower limit current controller DK and the first normally open contact KA102 of the first relay KA1 are closed to enable the first relay KA1 and the seventh relay KA7 to form a self-locking state, the normally closed contact KA701 of the seventh relay KA7 is always in a normally open state, and the upper and lower limit current controller DK is powered off and stops working. The evaporator fan M1 and the compressor M2 are powered off and stop working.

The first relay KA1 and the seventh relay KA7 can be unlocked by using the first actuating switch AN1, the first actuating switch AN1 is manually turned off, the first relay KA1 and the seventh relay KA7 are powered off, the normally closed contact KA701 of the seventh relay KA7 is in a closed state, and the current upper and lower limit controller DK can be powered on again to work. The evaporator fan M1 and compressor M2 may be restarted.

The current up-down line limit controller DK monitors the current when the compressor M2 operates, in the figure 1, when the indoor temperature is cooled when the compressor M2 operates, and the temperature is reduced to a set temperature value, the split air conditioner control board KZ sends a cooling stop command, at the moment, the fourth relay KA4 controlled by the split air conditioner control board KZ loses power, after the fourth relay KA4 loses power, the air conditioner compressor M2 connected in series with the normally open contact KA401 of the fourth relay is stopped due to power loss, on the contrary, when the indoor temperature rises, the split air conditioner control board KZ triggers the fourth relay KA4 again, the normally open contact KA4 of the fourth relay is closed, the compressor M2 is started and operated by power loss, when the split air conditioner control board KZ sends a compressor operation stop command, the control end of the fourth relay KA4 is powered, the normally open contact KA401 of the fourth relay 4 breaks a loop where the current up-down line limit controller DK is located due to power loss, the current upper and lower line limit controller DK stops monitoring due to power loss.

The current upper and lower limit controllers DK operate at a specified time period each day: daytime, time switch KT can send the start instruction, make time switch KT's normally open contact KT1 closed, and then make third relay KA3 get electric, third relay KA 3's first normally open contact KA301 is closed, air conditioner evaporimeter fan M1 and compressor M2 get electric start, third relay KA 3's second normally open contact KA302 is closed, the restriction controller DK begins to monitor compressor M2 operating current on the electric current. At night, after time switch KT sends out and stops air conditioner operation instruction, time switch KT's normally open contact KT1 loses the electricity disconnection, third relay KA3 loses the electricity, third relay KA3 normally open contact KA301 disconnection, evaporimeter fan M1 and compressor M2 supply circuit disconnection, make the air conditioner stop refrigeration, the second normally open contact KA302 of third relay KA3 resumes normally open state because of third relay KA3 loses the electricity simultaneously, current upper and lower line limit controller DK stop current monitoring, reach the purpose of closing the air conditioner night.

When the air conditioner runs, the running current is reduced due to the leakage of a refrigerant, a pipeline of a refrigerating system is blocked, the oil shortage of a compressor and the like is increased, the upper and lower current limit controllers DK and DK trigger an alarm, the normally open contact DK1 of the upper and lower current limit controllers DK and a closed state is formed, the first relay KA1 and the seventh relay KA7 are powered on, then the first normally open contact KA102 of the first relay KA1 is closed due to power, the first normally open contact DK 102 and the first relay KA1 are in a self-locking state, after the first relay KA1 and the seventh relay KA7 are locked, the normally closed contact KA101 of the first relay KA1 is changed into the normally open state, the upper and lower current limit controllers DK and DK stop current monitoring on the evaporator fans M KA1 and the compressor M2 due to the cut-off of a loop, the seventh relay 7 and the first relay 1 act simultaneously, and the normally open contact of the seventh relay 7 is changed into the normally closed state, therefore, at this time, the air conditioner evaporator fan M1 and the compressor M2 stop operating simultaneously. The second normally open contact KA103 of the first relay KA1 is in a closed state, each air conditioner in the elevator machine room/equipment room corresponds to the novel split air conditioner controller installed, after all the air conditioners in the elevator machine room break down, the second normally open contact KA103 of the first relay KA1 of each air conditioner is closed, the circuit can enable the sixth relay KA6 to be powered, and further the normally open contact KA601 of the sixth relay KA6 is closed. And finally, a third normally open contact KA104 of the first relay KA1 is closed, so that the second indicator lamp D2 and the buzzer B are powered to give an audible and visual alarm. If equipment inspection personnel arrive at the scene at this moment and inspect the discovery back, can dial toggle switch K to the disconnection with the manual, stop audible alarm.

When the air conditioner is stopped due to a fault (the first relay KA1 and the seventh relay KA7 are self-locked due to the triggering of the current upper and lower line limit controller DK), after a professional technician overhauls the air conditioner, the air conditioner is reset through the first inching switch AN1, and at the moment, the air conditioner enters a re-working state. The working principle of the air conditioner evaporator fan monitoring device is that the first relay KA1 and the seventh relay KA7 are powered off through a first inching switch AN1 button, after the power is off, a first normally open contact KA102 of the first relay KA1 is disconnected, a normally closed contact KA101 of the first relay KA1 is closed, the first inching switch AN1 restores to a normal working state, at the moment, the air conditioner evaporator fan M1 and the compressor M2 operate again, the current upper and lower limit controller DK monitors current again, and if the current is abnormal again, the air conditioner evaporator fan monitoring device still stops working.

Further, as shown in fig. 1, the temperature monitoring circuit includes a temperature controller WK, the temperature controller WK is electrically connected to the temperature controller operating power supply U1, two ends of the temperature controller operating power supply U1 are electrically connected to two incoming ends of the alternating current, the temperature monitoring circuit is connected to the exhaust fan M3, one end of the exhaust fan M3 is connected to the neutral line end N of the alternating current, the other end of the exhaust fan M3 is connected to the normally open contact WK1 of the temperature controller WK in series, and the other end of the normally open contact WK1 of the temperature controller WK is electrically connected to the live line end L of the alternating current.

The temperature power supply U1 independently supplies power to the temperature controller, when the temperature controller WK detects that the temperature in the elevator machine room is more than 40 degrees, the temperature controller WK controls the normally open contact WK1 of the temperature controller WK to be closed, a closed loop is formed in a circuit where the exhaust fan M3 is located, and the exhaust fan M3 is powered on to start radiating.

Further, as shown in fig. 1 and fig. 2, the temperature monitoring circuit further comprises a normally closed contact KA303 of a third relay KA3 connected in series with the normally open contact WK1 of the temperature controller WK, and the other end of the normally closed contact KA303 of the third relay KA3 is connected with a live wire end L of alternating current.

The temperature monitoring circuit also includes a normally open contact KA601 of a sixth relay KA6 connected in parallel with the normally closed contact KA303 of the third relay KA 3.

The temperature monitoring circuit further comprises a sixth relay KA6 connected with a zero line end N of alternating current, the sixth relay KA6 is sequentially connected with a plurality of second normally open contacts KA103 of the first relays in series, and the second normally open contact KA103 of the first relay at the tail end is electrically connected with a fire line end L of the alternating current.

When the running current passing through the upper and lower current limit controller DK is higher or lower than a set value during the working time of the air conditioner in daytime, the evaporator fan M1 and the compressor M2 are de-energized and stop working.

In the timing switch circuit, timing switch KT is in the state of being electrified, and timing switch KT's normally open contact KT1 is closed, and third relay KA3 gets electric, and the normally closed contact KA303 disconnection of third relay KA3 in the temperature monitoring circuit, when temperature controller WK detected the temperature in the elevator machine room and is greater than 40, temperature controller WK made temperature controller WK's normally open contact WK1 closed, and exhaust fan M3 gets the electricity and starts the heat dissipation.

When the air conditioner stops working at night, in the timing switch circuit, the timing switch KT is in a power-off state, the normally open contact KT1 of the timing switch KT is disconnected, and the third relay KA3 is powered off.

In the temperature monitoring circuit, a normally closed contact KA303 of a third relay KA3 is closed, in the temperature monitoring circuit, the normally closed contact KA303 of the third relay KA3, a normally open contact WK1 of a temperature controller WK and an exhaust fan M3 form a loop, the temperature controller WK controls the normally open contact WK1 of the temperature controller WK to be closed and opened, when the temperature controller WK detects that the temperature in an elevator machine room is higher than 40 ℃, the temperature controller WK enables the normally open contact WK1 of the temperature controller WK to be closed, a circuit formed by connecting the normally closed contact KA303 of the third relay KA3, the normally open contact WK1 of the temperature controller WK and the exhaust fan M3 in series forms a closed loop, and the exhaust fan M3 is powered on to start heat dissipation. When the temperature in the elevator machine room is lower than 40 ℃ at night, the temperature controller WK controls the normally open contact WK1 of the temperature controller WK to be disconnected, so that the exhaust fan M3 is closed when power is lost.

Utilize temperature controller WK to detect the temperature in the elevator machine room, when air conditioner trouble signals or the temperature in the air conditioner elevator machine room that stops using at night is greater than 40, thereby closed temperature controller WK's normally open contact WK1 starts exhaust fan M3 in the machine room, realize the heat dissipation of elevator machine room temperature, furthest has ensured that the room temperature in the elevator machine room is unlikely to too high, also realized simultaneously that the machine room temperature stops exhaust fan M3's work when low excessively at night, reach the energy-conserving purpose of maximize.

The sixth relay KA6 is connected with the second normally open contacts KA103 of the first relays, the second normally open contacts KA103 of each first relay are correspondingly connected with an air conditioner, when the corresponding air conditioner breaks down, the second normally open contacts KA103 of the corresponding first relays are closed, when the second normally open contacts KA103 of all the first relays are closed, the sixth relay KA6 is powered on, the normally open contacts KA601 of the sixth relay KA6 are closed, therefore, the normally open contacts KA601 of the sixth relay KA6 and the normally open contacts WK1 of the temperature controller WK can form a loop with the exhaust fan M3, and the exhaust fan M3 is controlled to be opened or closed by the temperature controller WK.

Further, as shown in fig. 2, the split air conditioner controller further includes an alarm circuit, the alarm circuit includes a first indicator light L1 connected to two ends of the alternating current, a second indicator light L2 and a second normally open contact of the first relay KA1 are further connected in series between the two ends of the alternating current, a buzzer B is further connected in parallel between the two ends of the second indicator light L2, and the buzzer B is further connected in series with a toggle switch K.

In the power control loop, when the running current passing through the upper and lower limit current controllers DK is higher than or lower than a set value, the normally open contact DK1 of the upper and lower limit current controllers DK in the overcurrent protection circuit is closed, the first relay KA1 is electrified, the third normally open contact KA104 of the first relay KA1 in the alarm circuit is closed, the second indicator lamp L2 and the buzzer B are electrified, the second indicator lamp L2 lights for alarm, and the buzzer B sounds for alarm.

The buzzer B is also connected with an independent toggle switch K, the power-on and power-off of the buzzer B are controlled independently, and the buzzer B can be turned off manually.

Further, as shown in fig. 2, the split air conditioner controller further includes a test operation circuit, and the test operation circuit includes a second relay KA2, a second inching switch AN2, and a normally closed contact KT101 of a time relay KT 10.

One end of the second relay KA2 is connected with a zero line end N of alternating current, the other end of the second relay KA2 is sequentially connected with a second inching switch AN2 and a normally closed contact KT101 of a time relay KT10 in series, the other end of the normally closed contact KT101 of the time relay KT10 is connected with a live wire end L of the alternating current, and two ends of the second inching switch AN2 are further connected with a first normally open contact KA202 of a second relay KA2 in parallel.

The split air conditioner controller also comprises a time relay KT10, one end of the time relay KT10 is connected with a zero line end N of alternating current, the other end of the time relay KT10 is connected with a second normally open contact KA203 of a second relay KA2 in series, and the other end of the second normally open contact KA203 of the second relay KA2 is connected with a live line end L of the alternating current.

After the air conditioner fault alarm and shut down, when the maintainer is on-site for inspection, the air conditioner can be retested/inspected or maintained again by setting the time of a time relay KT1 in the test run circuit, and the working principle of the test run circuit is as follows:

when the air conditioner machine reported to the police and shut down the protection, patrol and examine/maintenance personal back of arriving on the scene, accessible regulation time relay KT10 sets for the time of trying the machine, presses the second inching switch AN2 start-up air conditioner, after the air conditioner machine is trying the operation, when the range that the operating current value still surpassed the upper and lower limit controller DK of electric current and set for, the upper and lower limit controller DK of electric current can trigger the start fault alarm again, and its theory of operation is: when second inching switch AN2 triggers, second relay KA2 gets electricity and triggers first normally open contact KA202 of second relay KA2, make its self be the self-locking state, second normally open contact KA203 of second relay KA2 is closed back, time relay KT10 gets electricity and begins the count down, because the action of second relay KA2 this moment, normally closed contact KA201 of second relay KA2 changes into normally open state by normally closed state, with the power shutoff of upper and lower line limit controller DK of electric current and first relay KA1, seventh relay KA7, make upper and lower line limit controller DK of electric current inoperative. Also because first relay KA1, seventh relay KA7 lose the electricity, the normally closed state of normally closed contact KA701 of seventh relay KA7 makes air conditioner evaporimeter fan M1, compressor M2 get the electricity and resume the operation, and the normally open state is resumed to second normally open contact KA103 of first relay KA1, and sixth relay KA6 loses the electricity and does not start the exhaust fan, and alarm circuit loses the electricity and does not report to the police. After time relay KT10 count-down ends, time relay KT 10's normally closed contact KT101 can be converted into normally open state by the normally closed state by KT10 triggering, second relay KA2 can lose the electricity because time relay KT 10's normally closed contact KT 101's disconnection this moment, second relay KA 2's first normally open contact KA202 resumes to normally open state by the closure state, second relay KA2 auto-lock state contacts, second relay KA 2's second normally open contact KA203 resumes to normally open state, the trial run action ends.

Further, as shown in fig. 1, a terminal of the control panel KZ of the split air conditioner for controlling the compressor M2 is also connected in series with a fourth relay KA4, the other end of the fourth relay KA4 is electrically connected to the UPS power supply, and in the power control circuit, a normally open contact KA401 of the fourth relay KA4 is connected in series with a line between a normally closed contact KA701 of the seventh relay KA7 and the compressor M2.

Through the independent control of the fourth relay KA4, the normally open contact KA401 of the fourth relay KA4 is closed or opened, so that the compressor M2 can be independently powered on or powered off. The control power supply of the control end of the fourth relay KA4 is from the UPS, the control panel KZ of the split air conditioner is set whether the indoor temperature reaches a set value (such as 26 ℃), if the indoor temperature is higher than the set value, the air conditioner sends a refrigeration instruction, namely, sends out Direct Current (DC)12V, so that the fourth relay KA4 is electrified and triggered, the normally open contact KA401 of the fourth relay KA4 is closed, and the compressor M2 is electrified and operated.

Further, as shown in fig. 1, a terminal of the control panel KZ of the split air conditioner for controlling the evaporator fan M1 is also connected in series with a fifth relay KA5, the other end of the fifth relay KA5 is electrically connected to the UPS power supply, and in the power control circuit, the normally open contact KA501 of the fifth relay KA5 is connected in series with a line between the normally closed contact KA701 of the seventh relay KA7 and the evaporator fan M1.

Through the independent control of the fifth relay KA5, the normally open contact KA501 of the fifth relay KA5 is closed or opened, so that the evaporator fan M1 can be independently turned on or turned off when power is lost. The control power supply of the fifth relay KA5 is from the UPS power supply, and when the control panel KZ of the split air conditioner sends out high (H), medium (M) and low (L) wind speed instructions, the KA5 intermediate relay can be triggered. The fifth relay KA5 is triggered by power, a normally open contact KA501 of the fifth relay KA5 is closed, and the evaporator fan M1 runs by power.

The utility model discloses a timing switch circuit realizes that split air conditioner's the mistake electricity is automatic to restart, and timing switch KT can be in the state of "opening" or "close" at timing switch KT's normally open contact KT1 in the time quantum that sets up, and can circulate and carry out the switching action, and split air conditioner control panel KZ is by UPS power independent power supply, even after the alternating current loses the electricity, still can last the power supply through the UPS power, can't restart after avoiding exchanging some power losses. The fault power-off protection of the split air conditioner is realized through the overcurrent protection circuit; when the operation current passing through the current upper and lower limit controller DK is higher or lower than a set value, the evaporator fan M1 and the compressor M2 are stopped from operating. Realize stopping using the air conditioner or when the air conditioner trouble signals through the temperature monitoring circuit night, start exhaust fan M3 in the computer lab through the temperature monitoring circuit, realize the emergent cooling of elevator computer lab temperature, furthest has ensured that the room temperature in the elevator computer lab is unlikely to too high, can also realize stopping exhaust fan M3's work when the computer lab temperature is lower night simultaneously. The trial operation circuit can perform trial operation after the air conditioner is maintained when the air conditioner breaks down, and detect whether the fault is eliminated. The function of sound and light alarm when the air conditioner breaks down is realized through the alarm circuit, and workers are prompted to overhaul the air conditioner.

The above is only the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the same principle as the present invention.

Claims (10)

1. The utility model provides a novel split air conditioner controller, its characterized in that includes timing switch circuit, overcurrent protection circuit and the temperature monitoring circuit of being connected with two incoming end electricity of alternating current, timing switch circuit includes the UPS power and the time switch who carry out independent power supply for the split air conditioner control panel, time switch's normally open contact concatenates again with the third relay two incoming end of alternating current, the first normally open contact of third relay further inserts the power control return circuit of the evaporimeter fan and the compressor of air conditioner.

2. The controller of the split air conditioner as claimed in claim 1, wherein the overcurrent protection circuit comprises a current upper and lower limit controller for breaking the circuit when the current exceeds a limit value, one end of the current upper and lower limit controller is connected to a zero line end of the alternating current, the other end of the current upper and lower limit controller is connected in series with a second normally open contact of the third relay and a normally closed contact of the first relay in sequence, and the normally closed contact of the first relay is connected to the evaporator fan of the air conditioner and a power control loop of the compressor;

the overcurrent protection circuit further comprises a first relay electrically connected with a zero line end of alternating current, the other end of the first relay is connected in series with a normally open contact of the upper and lower current limit controller, and the other end of the normally open contact of the upper and lower current limit controller is electrically connected with a joint of the normally closed contact of the first relay and the power control loop in the overcurrent protection circuit.

3. The controller of claim 2, wherein the overcurrent protection circuit further comprises a normally closed contact of a second relay connected in series with the normally closed contact of the first relay, the normally closed contact of the second relay is connected in series with the normally open contact of a fourth relay, and the other end of the normally open contact of the fourth relay is electrically connected to a live wire terminal of an alternating current;

the overcurrent protection circuit further comprises a first point action switch connected with the normally open contact of the current upper and lower limit controller in series, and the other end of the first point action switch is electrically connected with the junction of the normally closed contact of the second relay and the normally closed contact of the first relay in the overcurrent protection circuit.

4. The novel split air conditioner controller according to claim 3, wherein the overcurrent protection circuit further comprises a seventh relay, one end of the seventh relay is electrically connected to a zero line end of the alternating current, the other end of the seventh relay is connected to the first normally open contact of the first relay and is connected to a joint of the first relay and the normally open contacts of the upper and lower current limit controllers, and the other end of the first normally open contact of the first relay is connected to a joint of the normally open contacts of the upper and lower current limit controllers and the first actuating switch.

5. The controller of the novel split air conditioner as claimed in claim 4, wherein the temperature monitoring circuit comprises a temperature controller, the temperature controller is electrically connected with a working power supply of the temperature controller, two ends of the working power supply of the temperature controller are electrically connected with two incoming ends of the alternating current, the temperature monitoring circuit is connected with an exhaust fan, one end of the exhaust fan is connected with a zero line end of the alternating current, the other end of the exhaust fan is connected with the normally open contact of the temperature controller in series, and the other end of the normally open contact of the temperature controller is electrically connected with a live line end of the alternating current.

6. The novel split air conditioner controller as claimed in claim 5, wherein the temperature monitoring circuit further comprises a normally closed contact of a third relay connected in series with the normally open contact of the temperature controller, and the other end of the normally closed contact of the third relay is connected to a live wire end of alternating current;

the temperature monitoring circuit also comprises a normally open contact of a sixth relay which is connected in parallel with the normally closed contact of the third relay;

the temperature monitoring circuit further comprises a sixth relay connected with a zero line end of the alternating current, the sixth relay is sequentially connected with second normally open contacts of the first relays in series, and the second normally open contact of the first relay at the tail end is electrically connected with a live line end of the alternating current.

7. The split air conditioner controller according to claim 6, further comprising an alarm circuit, wherein the alarm circuit comprises a first indicator light connected to two ends of the alternating current, a second indicator light and a third normally open contact of the first relay are connected in series between the two ends of the alternating current, a buzzer is connected in parallel between the two ends of the second indicator light, and a toggle switch is connected in series with the buzzer.

8. The split air conditioner controller as claimed in claim 7, further comprising a test run circuit, wherein the test run circuit comprises a second relay, a second inching switch and a normally closed contact of a time relay;

one end of the second relay is connected with a zero line end of the alternating current, the other end of the second relay is sequentially connected with the second inching switch and a normally closed contact of the time relay in series, the other end of the normally closed contact of the time relay is connected with a live wire end of the alternating current, and two ends of the second inching switch are also connected with a first normally open contact of the second relay in parallel;

the novel split air conditioner controller further comprises a time relay, one end of the time relay is connected with a zero line end of the alternating current, the other end of the time relay is connected with a second normally open contact of the second relay in series, and the other end of the second normally open contact of the second relay is connected with a live wire end of the alternating current.

9. The novel split air conditioner controller according to claim 8, wherein a terminal of the split air conditioner control board for controlling the compressor is further connected in series with a fourth relay, the other end of the fourth relay is electrically connected to the UPS power supply, and in the power control circuit, a normally open contact of the fourth relay is connected in series with a line between a normally closed contact of the seventh relay and the compressor.

10. The novel split air conditioner controller according to claim 9, wherein a terminal of the split air conditioner control board for controlling the evaporator fan is further connected in series with a fifth relay, the other end of the fifth relay is electrically connected to the UPS power supply, and in the power control loop, a normally open contact of the fifth relay is connected in series with a line between a normally closed contact of the seventh relay and the evaporator fan.

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