CN205579863U - Air conditioner heating control circuit - Google Patents

Air conditioner heating control circuit Download PDF

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Publication number
CN205579863U
CN205579863U CN201620149151.8U CN201620149151U CN205579863U CN 205579863 U CN205579863 U CN 205579863U CN 201620149151 U CN201620149151 U CN 201620149151U CN 205579863 U CN205579863 U CN 205579863U
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China
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control
circuit
heating
mainboard
relay
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CN201620149151.8U
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Chinese (zh)
Inventor
罗捷
王严杰
姜国璠
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Abstract

The utility model discloses an air conditioner heating control circuit, wherein, this circuit includes: a control main board; the temperature sensor is connected with the control main board and used for detecting the external environment temperature and feeding back the external environment temperature to the control main board; the first heating control circuit comprises a first electric heating pipe, the first heating control circuit is connected with the first output end of the control mainboard and is used for controlling the first electric heating pipe to heat according to a control signal output by the first output end of the control mainboard, and the control mainboard controls the first output end of the control mainboard to output the control signal according to the external environment temperature. The utility model provides a prior art cavity regulation heating control mode be manual control, can't control the heating according to actual demand by oneself and open the problem that stops, realizes the air conditioner heating and opens the automatic control who stops, furtherly has improved the intellectuality of air conditioner heating control.

Description

Air-conditioning heating control circuit
Technical field
This utility model relates to air-conditioning technical field, adds thermal control in particular to a kind of air-conditioning Circuit processed.
Background technology
Existing ship is with in air conditioner electric heating control circuit, and use arranges a temperature limiter and one more Fuse-link is series at the mode of circuit: controls electrically heated start and stop by switch manual, works as unit When occurring extremely causing electrical heating temperature too high, temperature limiter or fuse-link action, make electrical heating break Open, thus play the safeguard protection effect to unit electric heater unit.
But, existing this control mode is the most intelligent, specifically, first, and heating Control mode is Non-follow control, it is impossible to control heating start and stop the most voluntarily;Additionally, Computer heating control mode is more single, in user's actual application, it is sometimes desirable to carry out quickly Heating, and the most only need heating by a small margin, existing control mode cannot be according to the actual requirements Selectively carry out computer heating control.
For the problems referred to above in correlation technique, the most not yet propose to efficiently solve scheme.
Utility model content
This utility model provides a kind of air-conditioning heating control circuit, at least to solve prior art Middle air-conditioning computer heating control mode is Non-follow control, it is impossible to controls heating the most voluntarily and opens The problem stopped.
For solving above-mentioned technical problem, according to an aspect of disclosure embodiment, this practicality is new Type provides a kind of air-conditioning heating control circuit, and this circuit includes: control mainboard;Temperature sensing Device, temperature sensor is connected with controlling mainboard, is used for detecting ambient temperature, and by outside Ambient temperature feeds back to control mainboard;First heating control circuit, including the first electric heating tube, First heating control circuit is connected with controlling mainboard the first outfan, for according to control mainboard the The control signal of one outfan output controls the first electric heating tube and heats, and wherein, controls main Buttress controls mainboard the first outfan output control signal according to ambient temperature.
Further, this circuit also includes: the second heating control circuit, including the second electrical heating Pipe, the second heating control circuit is connected with controlling mainboard the second outfan, for main according to controlling The control signal of plate the second outfan output automatically controls the second electric heating tube and heats, wherein, Control mainboard and control mainboard the second outfan output control signal according to ambient temperature.
Further, the first heating control circuit also includes: the first relay, the first relay Control end is connected with controlling mainboard the first outfan, the outfan of the first relay and first electric Add heat pipe to connect, for controlling first according to the control signal controlling the output of mainboard the first outfan Relay on-off, to control the heating of the first electric heating tube.
Further, the second heating control circuit also includes: the second relay, the second relay Control end is connected with controlling mainboard the second outfan, the outfan of the second relay and second electric Add heat pipe to connect, for controlling second according to the control signal controlling the output of mainboard the second outfan Relay on-off, to control the heating of the second electric heating tube.
Further, the first heating control circuit also includes: the first fuse, is arranged at first Between relay and the first electric heating tube, for the first heating control circuit is carried out temperature protection.
Further, the first heating control circuit also includes: the first temperature limiter, with the first relay Device connects, for the first heating control circuit is carried out temperature protection.
Further, the second heating control circuit also includes: the second fuse, is arranged at second Between relay and the second electric heating tube, for the second heating control circuit is carried out temperature protection.
Further, the second heating control circuit also includes: the second temperature limiter, with the second relay Device connects, for the second heating control circuit is carried out temperature protection.
Further, this circuit also includes: three phase mains, for the first electric heating tube, the One electric heating tube and control main board power supply.
Further, this circuit also includes: transformator, the input of transformator and three phase mains Connecting, the outfan of transformator is connected with controlling mainboard, for the voltage exported by three phase mains Be converted to control mainboard can voltage.
Further, this circuit also includes: wave filter, the first end of wave filter and transformator Outfan connects, and the second end of wave filter is connected, for the filtering of circuit with controlling mainboard.
Further, this circuit also includes: chopper, be arranged at three phase mains and transformator it Between, for the overcurrent protection of circuit.
Further, this circuit also includes: phase sequence relay, is arranged at three phase mains and control Between mainboard, for the phase sequence of circuit.
In this utility model, when the heating of air-conditioning is controlled, by controlling mainboard and temperature The mode that degree sensor combines realizes automatically controlling of air-conditioning heating, when specifically controlling, utilizes temperature Degree sensor detection ambient temperature, is arranged ambient temperature and user on air-conditioning Temperature compares, and when controlling mainboard and judging the difference range meeting setting, sends control letter Number controlling air-conditioning realizes automatically heating, this air-conditioning computer heating control mode, efficiently solves existing Having air-conditioning computer heating control mode in technology is Non-follow control, it is impossible to control the most voluntarily The problem of heating start and stop, it is achieved automatically controlling of air-conditioning heating start and stop, further, improves The intellectuality of air-conditioning computer heating control.
Accompanying drawing explanation
Fig. 1 is a kind of optional of the air-conditioning heating control circuit according to this utility model embodiment Structured flowchart;
Fig. 2 is that the another kind of the air-conditioning heating control circuit according to this utility model embodiment is optional Structured flowchart;
Fig. 3 is a kind of preferred of the air-conditioning heating control circuit according to this utility model embodiment Circuit connection diagram;And
Fig. 4 is a kind of preferred of the air-conditioning method for heating and controlling according to this utility model embodiment Flow chart.
Detailed description of the invention
Here will illustrate exemplary embodiment in detail, its example represents in the accompanying drawings. When explained below relates to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represents Same or analogous key element.Embodiment described in following exemplary embodiment does not represent The all embodiments consistent with this utility model.On the contrary, they are only and the most appended right The example of the apparatus and method that aspects that described in detail in claim, more of the present utility model are consistent Son.
Embodiment 1
The air-conditioning heating control circuit provided this utility model below in conjunction with the accompanying drawings illustrates.
The air-conditioning heating control circuit that this utility model provides can be applied at marine air conditioner equipment On, it is also possible to realizing on domestic air-conditioning equipment or market temperature control system, Fig. 1 illustrates this A kind of optional structured flowchart of air-conditioning heating control circuit, as it is shown in figure 1, the heating of this air-conditioning Control circuit includes:
Control mainboard 10, this control mainboard 10 as air-conditioning heating control circuit core controller, Can be used for air-conditioning heating start and stop condition is judged, and whether air-conditioning is heated be controlled.
Temperature sensor 12, this temperature sensor 12 is connected with controlling mainboard 10, is used for detecting The ambient temperature of air-conditioning position, and feed back to ambient temperature control mainboard. This ambient temperature can control the basis for estimation of air-conditioning heating start and stop as control mainboard 10.
First heating control circuit 14, including the first electric heating tube 142, the first computer heating control electricity Road 14 is connected with controlling mainboard 10 first outfan, for according to controlling mainboard 10 first output The control signal of end output controls the first electric heating tube 142 and heats, and wherein, controls mainboard 10 control mainboard the first outfan output control signal according to ambient temperature.Preferably, First heating control circuit also includes: the first relay 144, the control end of the first relay 144 Being connected with controlling mainboard 10 first outfan, outfan and first electricity of the first relay 144 add Heat pipe 142 connects, for controlling the according to the control signal controlling the output of mainboard the first outfan One relay on-off, to control the heating of the first electric heating tube.
Specifically, above-mentioned air-conditioning heating control circuit, when being operated, first passes through temperature Sensor 12 obtains current environmental temperature, then by the ambient temperature parameter feedback obtained to controlling Mainboard 10.Control the temperature of the sign environment nowadays that temperature sensor 12 is fed back by mainboard 10 Number of degrees value compares with air-conditioning current setting temperature, arranges less than air-conditioning in current environmental temperature When the numerical value of temperature meets first threshold scope, control the first electric heating tube and work to heat.
Above-mentioned preferred embodiment in, when the heating of air-conditioning is controlled, by controlling The mode that mainboard is combined with temperature sensor realizes automatically controlling of air-conditioning heating, when specifically controlling, Temperature sensor is utilized to detect ambient temperature, by ambient temperature and user on air-conditioning The temperature arranged compares, and when controlling mainboard and judging the difference range meeting setting, sends Control signal controls air-conditioning and realizes heating, this air-conditioning computer heating control mode automatically, effectively solves In prior art of having determined, air-conditioning computer heating control mode is Non-follow control, it is impossible to according to the actual requirements certainly The problem that row controls heating start and stop, it is achieved automatically controlling of air-conditioning heating start and stop, further, Improve the intellectuality of air-conditioning computer heating control.
Of the present utility model one preferred embodiment in, also above-mentioned scheme is carried out Optimizing, the technique effect heated to realize air conditioning system stepping to carry out, when implementing, such as Fig. 2 Shown in, above-mentioned air-conditioning heating control circuit also includes: the second heating control circuit 16, including the Two electric heating tubes 162, the second heating control circuit 16 is connected with controlling mainboard 10 second outfan, For automatically controlling the second electric heating tube according to the control signal controlling the output of mainboard the second outfan Heat, wherein, control mainboard and export according to ambient temperature control mainboard second End output control signal.Preferably, the second heating control circuit also includes: the second relay 164, The control end of the second relay 164 is connected with controlling mainboard 10 second outfan, the second relay Outfan and second electric heating tube 162 of 164 connect, for according to controlling mainboard the second outfan The control signal of output controls the second relay on-off, to control the heating of the second electric heating tube.
Specifically, in above-mentioned air-conditioning heating control circuit, the first heating control circuit 14 controls After first electric heating tube 142 heats, after very first time threshold value (such as, 2min), Monitor and know that current environmental temperature is less than air-conditioning and arranges the numerical value of temperature and meet Second Threshold scope Time, control the second electric heating tube and the first electric heating tube works to heat simultaneously.
The enforcement of above-mentioned preferred technical scheme, it is achieved to many grades of electrically heated multiple-rank control of air-conditioning, When controlling mainboard and meeting the first unlocking condition according to temperature sensor detection outside temperature parameter, The first electric heating tube can be controlled heat, i.e. one grade of heating;Carry out at the first electric heating tube Heating a period of time after, temperature sensor detection outside temperature parameter still with air-conditioning design temperature Gap is relatively big, controls mainboard and can determine that and meet the second heating condition, makes the second electric heating tube and the One electric heating tube heats simultaneously, it is achieved while stepping heating, it is provided that air-conditioning computer heating control Intellectuality.
Of the present utility model one preferred embodiment in, also such scheme is entered One-step optimization, it is ensured that air-conditioning heating control circuit is controlling the safety of heating, specifically, Fig. 3 Provide the circuit connection diagram of a kind of air-conditioning heating control circuit, in figure 3, control mainboard 10 It is connected with temperature sensor RT1 by CN3, for detecting the external environment condition of air-conditioning position Temperature, and ambient temperature feeds back to control mainboard, and control mainboard 10 respectively by defeated The control end going out port K8 and K1 and the first relay AP3 and the second relay AP4 connects, For export control signal control the conducting of the first relay AP3 and the second relay AP4 with No, to realize the first electric heating tube and the control of the second electric heating tube.Further, first Heating control circuit also includes: first fuse FU1, FU2, is arranged at the first relay AP3 With first between electric heating tube EH1, EH2, EH3, for the first heating control circuit is entered Trip temperature is protected.
Additionally, also set up on the first heating control circuit: the first temperature limiter SAT1, continue with first Electrical equipment AP3 connects, for the first heating control circuit is carried out temperature protection.Melt by first Disconnected device FU1, FU2, the first temperature limiter SAT1 realizes dual-temperature electrically heated to unit protection.
Accordingly, the second heating control circuit is provided with second fuse FU3, FU4, if It is placed between the second relay AP4 and second electric heating tube EH4, EH5, EH6, for right Second heating control circuit carries out temperature protection.Further, the second heating control circuit also wraps Include: the second temperature limiter SAT2, be connected with the second relay AP4, for the second computer heating control Circuit carries out temperature protection.Real by second fuse FU3, FU4, the second temperature limiter SAT2 Now dual-temperature electrically heated to unit protection.
In figure 3, this air-conditioning heating control circuit also includes three phase mains, respectively by L1, L2 and L3 is that the first electric heating tube, the heating of the first electric heating tube are powered through patch panel XT1, And to controlling main board power supply, for circuit safety, the neutral conductor PE ground connection in three phase mains. It is powered being to need to arrange transformator and (see Fig. 3 to controlling mainboard utilizing three phase mains In transformator electrical appliance kit TC1), the input of transformator is connected with three phase mains, transformator Outfan is connected with controlling mainboard X1, X2 end, for the voltage conversion exported by three phase mains For control mainboard can voltage.
Preferably, for stability and the safety of circuit, the air-conditioning provided in figure 3 heats Control circuit also includes wave filter FILTER, and the first end of wave filter connects with the outfan of transformator Connecing, the second end of wave filter is connected, for the filtering of circuit with controlling mainboard X1, X2 end.
Additionally, for the safety of circuit, additionally provide overcurrent protective device, circuit breaker Q F1, It is arranged between three phase mains and transformator, for the overcurrent protection of circuit.
Further, foregoing circuit can also include: phase sequence relay PM, is arranged at three-phase electricity Between source and control mainboard, for the phase sequence of circuit.
Embodiment 2
Based on the air-conditioning heating control circuit provided in above-described embodiment 1, excellent at this utility model The embodiment 2 of choosing additionally provides the control method of above-mentioned air-conditioning heating control circuit, specifically, As shown in Figure 4, the method comprises the steps:
S402, obtains current environmental temperature, and arranges temperature with air-conditioning and compare;
S404, the numerical value arranging temperature less than air-conditioning in current environmental temperature meets first threshold model When enclosing, control the first electric heating tube and work to heat.
Further, working after heating controlling the first electric heating tube, the method is also Including: after very first time threshold value, monitor and know that current environmental temperature is less than air-conditioning and arranges temperature Numerical value when meeting Second Threshold scope, control the second electric heating tube and the first electric heating tube simultaneously Work is to heat.
Below in conjunction with the accompanying drawings 3 and illustrate said method is illustrated:
Under air-conditioning is in heating mode, and ambient temperature T of temperature sensor detectionRingWith setting Temperature TIfBetween relation meet TIf≥TRingWhen+2 DEG C, i.e. current environmental temperature is less than air-conditioning The numerical value arranging temperature meets first threshold scope, mainboard K8 port provide the output signal to solid State relay board AP3, now AP3 solid-state relay inhale and, the first electric heating tube electrical heating is opened Open;After very first time threshold value (such as after 2min), control mainboard and again detect TIf With TRingBetween relation, if still meet T set >=+2 DEG C of T ring time, i.e. monitor and know and work as front ring Border temperature less than air-conditioning arrange the numerical value of temperature meet Second Threshold scope time, then by mainboard K1 end Mouth provides the output signal to solid-state relay plate AP4, now AP4 solid-state relay inhale and, the Two electric heating tube electrical heating are opened.
Preferably, additionally provide in the method electrical heating close control program, specifically, After control the second electric heating tube and the first electric heating tube work to heat simultaneously, every Second time threshold obtains current environmental temperature, and arranges temperature with air-conditioning and compare;Working as Front ambient temperature less than air-conditioning arrange the numerical value of temperature meet three threshold ranges time, control second Electric heating tube quits work.
Further, after controlling the second electric heating tube and quitting work, every the 3rd time threshold Value obtains current environmental temperature, and arranges temperature with air-conditioning and compare;In current environmental temperature Less than air-conditioning arrange the numerical value of temperature meet four threshold ranges time, control the first electric heating tube and stop Only work.
Below in conjunction with the accompanying drawings 3 and illustrate said method is illustrated:
When two grades of electrical heating have turned under air-conditioning heating pattern, control mainboard the second time threshold (such as, every 2min) detection ambient temperature TRingWith design temperature TIfBetween relation, when Meet T set≤+ 2 DEG C of T ring time, i.e. current environmental temperature arranges the numerical value of temperature less than air-conditioning Meeting the 4th threshold range, mainboard K1 port disconnects to be believed to the output of solid-state relay plate AP4 Number, now AP4 solid-state relay disconnects, and the second electric heating tube electrical heating is closed;Through the 3rd After time threshold (such as, 2min), mainboard detects T againIfWith TRingBetween relation, If still meet T set≤+ 2 DEG C of T ring time, i.e. current environmental temperature arranges temperature less than air-conditioning Numerical value meets the 4th threshold range, and it is defeated that mainboard K8 port disconnects to solid-state relay plate AP3 Going out signal, now AP3 solid-state relay disconnects, and the first electric heating tube electrical heating is closed.
Herein it should be noted that above-mentioned first threshold scope, very first time threshold value, second Time threshold, the 3rd time threshold can be arranged the most voluntarily, and parameters numerical value can With identical, it is also possible to differ, this utility model is not limited to this.
When carrying out the protection of circuit, when electrical heating dependent failure occurs in unit, in causing unit Portion's temperature anomaly, and ambient temperature TRingDetection is broken down, when electrical heating fails to be automatically switched off, I.e. by fuse-link and temperature limiter, unit electrical heating is carried out duplicate protection.Preferably, used by unit Fuse-link operating temperature TMolten=110 DEG C, the operating temperature of temperature limiter is TLimit=65 DEG C.When limit temperature After device reaches operating temperature, break in solid-state relay plate AP3 (or AP4) temperature limiter connectivity port Open, after mainboard detects the cut-off signal of solid-state relay plate AP3 (or AP4), K8 (or K1) input of port cut-off signal, makes solid-state relay disconnect, and electrical heating is closed.Work as temperature limiter Also occurring when the faults such as short circuit cause temperature limiter circuit to disconnect, unit internal temperature will continue Rising, now protected by fuse-link, when fuse-link reaches fusing-off temperature, fuse-link breaks Open, will directly disconnect electric heating circuit.
It can be seen from the foregoing description that in this utility model, the heating to air-conditioning is controlled Time processed, by the way of controlling mainboard and being combined with temperature sensor, realize the automatic control of air-conditioning heating System, when specifically controlling, utilizes temperature sensor to detect ambient temperature, by external environment condition temperature Spend the temperature arranged on air-conditioning with user to compare, judge to meet setting controlling mainboard During difference range, sending control signal and control air-conditioning realization heating automatically, this air-conditioning adds thermal control Mode processed, the air-conditioning computer heating control mode in prior art that efficiently solves is Non-follow control, nothing The problem that method controls to heat start and stop the most voluntarily, it is achieved air-conditioning heats the automatic of start and stop Control, further, improve the intellectuality of air-conditioning computer heating control.
Further, can realize, to many grades of electrically heated multiple-rank control of air-conditioning, controlling mainboard root When meeting the first unlocking condition according to temperature sensor detection outside temperature parameter, the first electricity can be controlled Add heat pipe to heat, i.e. one grade of heating;Carry out heating a period of time at the first electric heating tube After, temperature sensor detection outside temperature parameter is still relatively big with air-conditioning design temperature gap, control Mainboard processed can determine that and meets the second heating condition, makes the second electric heating tube and the first electric heating tube same Shi Jinhang heats, it is achieved while stepping heating, it is provided that the intellectuality of air-conditioning computer heating control.
Those skilled in the art, will after considering description and putting into practice utility model disclosed herein It is readily apparent that other embodiment of the present utility model.The application is intended to of the present utility model Any modification, purposes or adaptations, these modification, purposes or adaptations are abided by Follow general principle of the present utility model and include this technology neck of the non-utility model of this utility model Common knowledge in territory or conventional techniques means.Description and embodiments is considered only as exemplary, True scope of the present utility model and spirit are pointed out by claim below.
It should be appreciated that this utility model is not limited to described above and in the accompanying drawings The precision architecture illustrated, and various modifications and changes can carried out without departing from the scope.This The scope of utility model is only limited by appended claim.

Claims (13)

1. an air-conditioning heating control circuit, it is characterised in that including:
Control mainboard;
Temperature sensor, described temperature sensor is connected with described control mainboard, outside being used for detecting Portion's ambient temperature, and described ambient temperature is fed back to described control mainboard;
First heating control circuit, including the first electric heating tube, described first heating control circuit It is connected with described control mainboard the first outfan, for according to described control mainboard the first outfan The control signal of output controls described first electric heating tube and heats, and wherein, described control is main Buttress controls the output of described control mainboard the first outfan according to described ambient temperature and controls letter Number.
Circuit the most according to claim 1, it is characterised in that also include:
Second heating control circuit, including the second electric heating tube, described second heating control circuit It is connected with described control mainboard the second outfan, for according to described control mainboard the second outfan The control signal of output automatically controls described second electric heating tube and heats, wherein, and described control Mainboard processed controls the output of described control mainboard the second outfan according to described ambient temperature and controls Signal.
Circuit the most according to claim 2, it is characterised in that described first computer heating control electricity Road also includes: the first relay, the control end of described first relay and described control mainboard the One outfan connects, and the outfan of described first relay is connected with described first electric heating tube, Control signal for exporting according to described control mainboard the first outfan controls described first relay Device break-make, to control the heating of described first electric heating tube.
Circuit the most according to claim 3, it is characterised in that described second computer heating control electricity Road also includes: the second relay, the control end of described second relay and described control mainboard the Two outfans connect, and the outfan of described second relay is connected with described second electric heating tube, Control signal for exporting according to described control mainboard the second outfan controls described second relay Device break-make, to control the heating of described second electric heating tube.
Circuit the most according to claim 4, it is characterised in that described first computer heating control electricity Road also includes:
First fuse, is arranged between described first relay and described first electric heating tube, For described first heating control circuit is carried out temperature protection.
Circuit the most according to claim 5, it is characterised in that described first computer heating control electricity Road also includes:
First temperature limiter, is connected with described first relay, for described first computer heating control Circuit carries out temperature protection.
Circuit the most according to claim 4, it is characterised in that described second computer heating control electricity Road also includes:
Second fuse, is arranged between described second relay and described second electric heating tube, For described second heating control circuit is carried out temperature protection.
Circuit the most according to claim 7, it is characterised in that described second computer heating control electricity Road also includes:
Second temperature limiter, is connected with described second relay, for described second computer heating control Circuit carries out temperature protection.
Circuit the most according to claim 4, it is characterised in that also include:
Three phase mains, for described first electric heating tube, described first electric heating tube and institute State control main board power supply.
Circuit the most according to claim 9, it is characterised in that also include:
Transformator, the input of described transformator is connected with described three phase mains, described transformator Outfan be connected with described control mainboard, for described three phase mains is exported voltage conversion For described control mainboard can voltage.
11. circuit according to claim 10, it is characterised in that also include:
Wave filter, the first end of described wave filter is connected with the outfan of described transformator, described Second end of wave filter is connected with described control mainboard, for the filtering of circuit.
12. circuit according to claim 10, it is characterised in that also include:
Chopper, is arranged between described three phase mains and described transformator, for the mistake of circuit Stream protection.
13. circuit according to claim 10, it is characterised in that also include:
Phase sequence relay, is arranged between described three phase mains and described control mainboard, for electricity The phase sequence on road.
CN201620149151.8U 2016-02-26 2016-02-26 Air conditioner heating control circuit Active CN205579863U (en)

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Application Number Priority Date Filing Date Title
CN201620149151.8U CN205579863U (en) 2016-02-26 2016-02-26 Air conditioner heating control circuit

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Application Number Priority Date Filing Date Title
CN201620149151.8U CN205579863U (en) 2016-02-26 2016-02-26 Air conditioner heating control circuit

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105674502A (en) * 2016-02-26 2016-06-15 珠海格力电器股份有限公司 air conditioner heating control circuit and control method
CN112303818A (en) * 2020-10-23 2021-02-02 珠海格力电器股份有限公司 Defrosting control device and method of air conditioning system and air conditioning system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105674502A (en) * 2016-02-26 2016-06-15 珠海格力电器股份有限公司 air conditioner heating control circuit and control method
CN112303818A (en) * 2020-10-23 2021-02-02 珠海格力电器股份有限公司 Defrosting control device and method of air conditioning system and air conditioning system
CN112303818B (en) * 2020-10-23 2021-10-29 珠海格力电器股份有限公司 Defrosting control device and method of air conditioning system and air conditioning system

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