CN102455037B - Air conditioner - Google Patents
Air conditioner Download PDFInfo
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- CN102455037B CN102455037B CN201110259902.3A CN201110259902A CN102455037B CN 102455037 B CN102455037 B CN 102455037B CN 201110259902 A CN201110259902 A CN 201110259902A CN 102455037 B CN102455037 B CN 102455037B
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- air conditioner
- speed mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention aims to provide an air conditioner with a remote controller, wherein the air conditioner can reduce electric power consumption in standby state. The air conditioner can be remotely operated through the remote controller. The air conditioner comprises the following components: a signal receiving circuit which is used for receiving a carrier signal that is transmitted from the remote controller; and an operation processing part which is used for performing operation processing on the carrier signal, wherein the operation processing part is provided with a clock frequency switching unit. The clock frequency switching unit is switched to a low-speed mode when the operation of the air conditioner is stopped, and in the low-speed mode, the operation clock of the operation processing part is less than the frequency of the operation clock in normal operation and the carrier signal can not be read.
Description
Technical field
The air conditioner of the battery saving mode while the present invention relates to there is standby.
Background technology
These products such as TV, stereo set, air conditioner more use in the place away from user conventionally, therefore utilize relatively independent remote controller (remote controller) to carry out operated from a distance, on/off, the action of carrying out the on/off of power supply, each function are switched.Particularly, for the indoor set of air conditioner, because it is configured in indoor eminence conventionally, therefore nearly all operation is all undertaken by remote controller.
For the above-mentioned equipment that utilizes remote controller operation, the operation that switches to operating condition from running halted state is also undertaken by remote controller, even therefore under running halted state, also be necessary for the state of energising all the time for receiving the signal receiving part of the carrier signal with operation instruction information, the control circuit that comprises microcomputer (micro computer), power circuit, wherein, this microcomputer is the arithmetic processing section for the treatment of the carrier signal receiving.
Therefore, for the equipment that utilizes remote controller operation, there is such problem: even under the signal wait state (hereinafter referred to as holding state) under running halted state, electric power also continues to consume.Power consumption in holding state is considerably less with respect to the power consumption in operating condition, but because electric power is consuming all the time, if therefore long-term accumulation is not the electric weight that can ignore.Therefore,, in order to solve this problem, the reduction method of the whole bag of tricks as the power consumption in holding state proposed.
A kind of technology of the electronic equipment with remote-control receiving circuit is disclosed in patent documentation 1, this remote-control receiving circuit is used for switching battery saving mode and normal mode carries out work, wherein, this battery saving mode is for stopping the work clock of this control module according to the instruction of the control module for controlling infrared remote control reception circuit, and start the work clock of above-mentioned control module according to predetermined enabling signal, this normal mode is used for starting above-mentioned work clock and conventionally works, this remote-control receiving circuit reduces the electric power being consumed by above-mentioned control module by the clock that quits work.
In patent documentation 1, due to the work clock of stop control unit, therefore under this state, cannot understand the carrier signal of sending from remote controller.Therefore, in order to restart work clock, and have be attached with restart pulse remote control pulse code, detect and above-mentionedly restart pulse and according to the signal generating circuit that restarts that restarts pulse generate starting impulse.Therefore, except the common remote-control receiving circuit for reception carrier signal, also need to restart signal generating circuit and for identifying the circuit that restarts pulse, therefore leave over that circuit scale increases, cost improves such problem.
A kind of control method of air conditioner is disclosed in patent documentation 2, in the control method of this air conditioner, comprise the computer having for the function of the operating rate of switch operation device, utilize this computer to control the actuator of air conditioner (actuator), the control method of this air conditioner is characterised in that, changes the control program of above-mentioned air conditioner according to the operating rate of the arithmetic unit of above-mentioned computer.
In patent documentation 2, because the operating rate to arithmetic unit is switched, and make the time of the actuator work of time that calculation process spends and control object that deviation occur, therefore by Change Control Procedure, can independently the time of implementation of program be remained constant with the operating rate of CPU.But, if as to actuator work control slow control, can deal with by improving the utilization rate of CPU the processing of actuator control, but in the case of in order to understand from the carrier signal of remote controller and must to carry out at a high speed calculation process, as long as operating rate does not reach a certain degree, just cannot tackle.And, sometimes the operating rate of CPU is switched to stop mode, in this case, also cannot detect, understand the carrier signal from remote controller.
The control method that discloses a kind of air conditioner in patent documentation 3, this air conditioner comprises: long-distance operating device, it is for exporting the running control operation signal of air conditioner, acceptance division, it is for receiving the signal from above-mentioned long-distance operating device, computer, it is for understanding the signal reading from this acceptance division, carry out the work of the actuator of air conditioner, or to external memory storage data writing, the control method of this air conditioner is characterised in that, in above-mentioned computer, be provided with for the arithmetic speed switch unit of the operating rate of switch operation device with for judging the operation mode of above-mentioned air conditioner, the mode determination of stop mode, and in the time that the running that above-mentioned mode determination is judged as air conditioner stops, utilize above-mentioned arithmetic speed switch unit, the operating rate of above-mentioned arithmetic unit is switched to lower than the speed that can understand from the degree of the signal of long-distance operating device, and at the signal of understanding from long-distance operating device, while being judged as operation mode, utilize above-mentioned arithmetic speed switch unit, the operating rate of the arithmetic unit of above-mentioned computer is switched to the speed when stopping.
In patent documentation 3, make the operating rate of arithmetic unit lower than receiving, understand the degree from the signal of long-distance operating device.Generally speaking, in the signal of home-use air conditioner, use the infrared signal that is modulated into 38kHz, and, according to being communicated by the pattern of the regulations such as juridical person's household appliances association.Therefore, understand this signal and also need to carry out the detection of Hi or Lo, bit and be 0 or 1 differentiation, bit information preservation, form 8 than top grade signal code (code), and need to carry out and the many calculation process such as relatively of signal code that are stored in arithmetic unit.Therefore, separate the arithmetic speed that read signal also needs several MHz.Thus, even the operating rate of arithmetic unit is reduced to limiting value, reduce power consumption, also cannot expect to obtain large effect.
The technology that discloses a kind of air conditioner in patent documentation 4, this air conditioner is made up of following part: converter, it is for converting the alternating current being connected with power supply with business to direct current; Inverter, it is for by the converting direct-current power into alternating-current power being connected with the deferent segment of above-mentioned converter; Driven compressor motor, it is connected with this inverter; Outdoor control circuit, it is for controlling above-mentioned converter and above-mentioned inverter; Off-premises station, it has this outdoor control circuit and for supplying with the outdoor control power supply of electric power to indoor set; Indoor control circuit, it is for controlling heat exchange and the wind direction board drive motor of above-mentioned indoor set; Indoor set, it has indoor control power supply, the technology of this air conditioner is characterised in that, be equipped with the power circuit control IC that power-efficient does not reduce in the time of low consumption electric power, even if stopping under the state of supplying with to indoor and outdoor control microcomputer electric power in addition, power-efficient does not also reduce, and with low electric power control microcomputer.
In patent documentation 4, there is following circuit: the circuit of the voltage of the voltage that makes to be supplied to the circuit that carries out work in the time of the state of low consumption electric power lower than conventionally time, but do not mention the particular content of the method.And, do not mention about capacitor, the such content of discharge resistance for line filter between power line yet.
Patent documentation 1: TOHKEMY 2007-221397 communique
Patent documentation 2: No. 3483483 communique of Japanese Patent
Patent documentation 3: No. 3788132 communique of Japanese Patent
Patent documentation 4: TOHKEMY 2002-81712 communique
In the past, for TV, stereo set, air conditioners etc. utilize remote controller to carry out remote-operated equipment, the operation that switches to operating condition from running halted state also utilizes remote controller to carry out conventionally, even if be therefore running halted state, for receiving the signal receiving part of the carrier signal with operation instruction information, comprise the control circuit of microcomputer, power circuit is also necessary for the state of energising all the time, power consumption while causing holding state becomes problem, wherein, this microcomputer is the arithmetic processing section for the treatment of the carrier signal receiving.
Therefore, in order to address this problem, following method has been proposed as described above: make the work clock of arithmetic processing section can be changed into low speed or stop, cutting off to the power supply of the load that there is no need energising and supply with.
But, as described above, in order to understand the carrier signal from remote controller, must guarantee enough clock speeds, or be necessary for and can receive by the identification of other circuit the structure of carrier signal, cannot reduce the such problem of power consumption in alive circuit all the time such as signal receiving part, adjuster and exist.
Summary of the invention
The present invention is for solving above-mentioned problem of the prior art, and its object is to provide a kind of structure uncomplicated and can be reduced in the air conditioner of the power consumption in holding state.
Above-mentioned purpose is reached in the following way, that is: one can utilize remote controller to carry out remote-operated air conditioner, and wherein, this air conditioner comprises: signal receiving circuit, and it is for receiving the carrier signal of sending from above-mentioned remote controller; Arithmetic processing section, it is for carrying out calculation process to above-mentioned carrier signal, above-mentioned arithmetic processing section has clock frequency switch unit, in the time of the running halted state of above-mentioned air conditioner, is switched to following low-speed mode: the work clock that makes above-mentioned arithmetic processing section is below the frequency of the work clock while conventionally turning round and is reduced to the low-speed mode of the degree that cannot understand above-mentioned carrier signal.
Above-mentioned purpose is reached in the following way, that is: in above-mentioned low-speed mode, the work clock that makes above-mentioned arithmetic processing section is that the frequency of the work clock while conventionally turning round is following and below carrier frequency for above-mentioned carrier signal.
Above-mentioned purpose is reached in the following way, that is: under the state that is above-mentioned low-speed mode at the work clock of above-mentioned arithmetic processing section, during more than the prearranged multiple in the sampling period of depending on clock frequency in above-mentioned low-speed mode, have input in above-mentioned signal receiving circuit time, the clock frequency while switching to common running by above-mentioned clock frequency switch unit.
Above-mentioned purpose is reached in the following way, that is: after the clock frequency when above-mentioned low-speed mode switches to above-mentioned common running by the work clock of above-mentioned arithmetic processing section, do not input in the given time in the situation from the carrier signal with bit information of above-mentioned remote controller, again switch to above-mentioned low-speed mode.
Above-mentioned purpose is reached in the following way, that is: above-mentioned air conditioner has: remote controller, during more than the prearranged multiple in its sampling period of depending on clock frequency in above-mentioned low-speed mode, there is no the output signal of bit information in the beginning setting of the carrier signal of sending from above-mentioned remote controller, and continue to send the carrier signal with bit information.
Above-mentioned purpose is reached in the following way, that is: above-mentioned air conditioner has: electric power is supplied with cutting unit, and it is for cutting off the electric power of supplying with to the load beyond the certain loads including above-mentioned arithmetic processing section and above-mentioned signal receiving circuit when the above-mentioned low-speed mode.
Above-mentioned purpose is reached in the following way, that is: the power circuit part of above-mentioned air conditioner is made up of switching power circuit, in running when halted state, when the few state of load, carries out intermittently in time, off and on work.
The present invention can provide a kind of air conditioner that can be reduced in the power consumption in holding state.
Brief description of the drawings
Fig. 1 is the figure that represents the surface structure of the air conditioner in embodiments of the present invention.
Fig. 2 is the sectional view of indoor set.
Fig. 3 is the figure that represents to be located at the signal receiving part of indoor set and the schematic configuration of its periphery.
Fig. 4 is the figure that represents the system architecture of air conditioner.
Fig. 5 is the figure that represents the system architecture example of the power circuit of air conditioner.
Fig. 6 is the figure that represents other examples of the system architecture example of the power circuit of air conditioner.
Fig. 7 is the flow chart that explanation power supply is supplied with the action (transfer from normal mode to low-speed mode) of cutting off switch.
Fig. 8 is the flow chart that explanation power supply is supplied with the action (transfer from low-speed mode to normal mode) of cutting off switch.
The sequential chart of action case when Fig. 9 is the carrier signal reception while representing normal mode, low-speed mode.
Figure 10 is the sequential chart of the recovery action case to normal mode while representing low-speed mode.
Figure 11 is the sequential chart of the action case while representing noise reception.
Figure 12 is other routine sequential charts of the recovery action case to normal mode while representing low-speed mode.
Symbol description
1 air conditioner
2 indoor sets
3 off-premises stations
4 connecting pipings
5 power transmission cables
6 communication cables
7 remote controllers
8 signal receiving parts
9 housing bases
10 heat exchangers
11 indoor blowers
11a blows out wind path
12 dew receive ware
13 escutcheons
14 front panels
15 air suction inlets
16 Air blowing mouths
17 left and right wind direction boards
18 up-down wind direction boards
19 infrared ray photo detectors
20 display parts
21 control substrate
22 dash currents prevent circuit
24 power circuits
25 fan motor drive circuits
26 indoor fan motor
27 two-port valve drive circuits
28 two-port valves
29 microcomputers
30 reset circuits
31 EEPROM
32 master clock oscillating circuits
33 secondary clock oscillation circuits
34 inlet temperature thermistors
35 heat exchanger temperature-sensitive resistance
36 humidity sensors
37 buzzers
38 Stepping Motor Driver
39 front panel motor
40a, 40b, 40c up-down wind direction board motor
41a, 41b left and right wind direction board motor
42 indoor and outdoor telecommunication circuits
43 sockets
44 attaching plugs
45 power lines
46 power relays
47a, 47b X capacitor
48 common mode choke coils
49a, 49b discharge resistance
50 business power supplys
51 smmothing capacitors
52 diode bridges
53 rectification circuits
54 Switching Power Supply IC
55 switch transformers
56 switching power circuits
57 main control power supply adjusters
58 sub-control power supply adjusters
59 18.5V power supplys
60 12V power supplys
61 8.5V power supplys
62 5.3V power supplys
63 3.3V power supplys
64a, 64b, 64c power supply are supplied with and are cut off switch
65a, 65b adverse current prevent diode
66 emergency operation switches
Detailed description of the invention
Below, explain the air conditioner 1 in embodiments of the present invention with reference to accompanying drawing.
First, utilize Fig. 1, Fig. 2 that the overall structure of the air conditioner 1 in present embodiment is described.Fig. 1 is the figure that represents the surface structure of the air conditioner 1 in present embodiment, and Fig. 2 is the sectional view of the indoor set 2 of air conditioner 1.
Air conditioner 1 shown in Fig. 1 utilizes connecting pipings 4, power transmission cable 5, communication cable 6 connect indoor set 2 and off-premises station 3 and form, for regulating room air.Bottom right-hand member on the figure of indoor set 2 shown in bottom right is provided with for receiving the signal receiving part 8 from the ultrared carrier signal of relatively independent remote controller (remoter controller) 7.
As shown in Figure 2, indoor set 2 is configured to: be provided with heat exchanger 10 at the central portion of housing base 9, dispose the indoor blower 11 of the roughly equal crossflow fan formula of the width of length and heat exchanger 10 in the downstream of heat exchanger 10, dew is installed and receives ware 12, their decorated frames 13 cover, and at the front surface of escutcheon 13, front panel 14 are installed.
In addition, on this escutcheon 13 with upper and lower formula be provided with air suction inlet 15 for sucking room air and for blow out humiture adjusted the Air blowing mouth 16 of air.In the time that the indoor blower 11 in air stream downstream of being located at heat exchanger 10 rotates, room air from the air suction inlet 15 of being located at indoor set 2 by heat exchanger 10, indoor blower 11 flow into the length of width and indoor blower 11 roughly equal blow out wind path 11a, in the effect downstream direction deflection to the left and right that is disposed in the left and right wind direction board 17 midway that blows out wind path 11a, and, be disposed in the effect downstream direction deflection up and down of up-down wind direction board 18 of Air blowing mouth 16, and blowing out to indoor.
Fig. 3 is the figure that represents to be located at the signal receiving part 8 of indoor set 2 and the schematic configuration of its periphery.On signal receiving part 8, be provided with for receiving the infrared ray photo detector 19 from the ultrared carrier signal of relatively independent remote controller 7.
In addition, to be provided with the mode of signal receiving part 8 adjacency the display part 20 that is configured to one.Display part 20 is lighted by making to be located at inner 6 light emitting diodes for demonstration (20a, 20b, 20c, 20d, 20e, 20f), from visually transmitting operational situation to user.
The system architecture of air conditioner 1 then, is described.
Fig. 4 is the figure that represents the system architecture of air conditioner 1.Indoor set 2 shown in Fig. 4 has at inner electric component box (not shown) substrate 21 of control.In Fig. 4, prevent that by dash current circuit 22, power relay (power relay) 46, power circuit 24 form power supply unit.Power circuit 24 is connected with indoor fan motor 26 via fan motor drive circuit 25, is connected with two-port valve 28 via two-port valve drive circuit 27.
On control substrate 21, be provided with microcomputer (micro computer) 29.Microcomputer 29 be connected as lower component: the reset circuit 30, EEPROM31, master clock oscillating circuit 32, the secondary clock oscillation circuit 33 that are connected with power circuit 24.
In addition, microcomputer 29 is connected with various sensors such as the signal receiving part 8 being made up of infrared ray photo detector 19, inlet temperature thermistor (thermistor) 34, heat exchanger temperature-sensitive resistance 35, humidity sensors 36.In addition, microcomputer 29 according to from the signal of above-mentioned various sensors, be subject to the carrier signal from remote controller 7 of light by infrared ray photo detector 19, so that the operating condition of air conditioner 1 can be controlled by the mode of user's (visually) identification sensuously the lighting of light emitting diode (20a, 20b, 20c, 20d, 20e, 20f) of display part 20, control piping of buzzer 37.
In addition, microcomputer 29 is controlled the rotation of the motor 39 for front panel that connects via Stepping Motor Driver 38, up-down wind direction board motor 40a, 40b, 40c, left and right wind direction board motor 41a, 41b.
In addition, microcomputer 29 is connected with emergency operation switch 66, according to the signal from emergency operation switch 66, is controlled to and executes predetermined running.
And microcomputer 29 is managed via communicating by letter between indoor and outdoor telecommunication circuit 42 and off-premises station 3, and be all together and control indoor set 2.
Then utilize Fig. 5, Fig. 6, Fig. 7, Fig. 8 that power circuit 24 is described.Fig. 5 is the figure that represents the system architecture example of power circuit 24.Fig. 6 is the figure that represents other examples of the system architecture example of power circuit 24.Fig. 7 is the flow chart that explanation power supply is supplied with the work (transfer from normal mode to low-speed mode) of cutting off switch.Fig. 8 is the flow chart that explanation power supply is supplied with the work (transfer from low-speed mode to normal mode) of cutting off switch.
In Fig. 5, in power circuit 24, by socket 43 is connected with attaching plug 44, supply with alternating electromotive force through power line 45 from business electricity consumption source 50.In addition, power circuit 24 comprises: for transport the power relay 46 from the electric power of business power supply 50 to off-premises station 3; To reduce noise as object cross-line capacitor (across-the-line capacitor) is (hereinafter referred to as " X capacitor ".) 47a; Common mode choke coil (common mode choke coil) 48.But also comprise the discharge resistance 49a discharging to being stored in the electric charge of X capacitor 47a for after dump.
As described above, in the present embodiment, in order to be reduced in the noise of propagating in the circuit of power supply 50, flowing out for business, and at two interpolars of alternating current circuit, X capacitor 47a is set.In air conditioner 1, except being located at the electric motor for compressor (not shown) of off-premises station 3, outdoor fan motor (not shown), indoor fan motor 26 are also in frequency conversion drive mode as main flow.In the case of the motor of frequency conversion drive, the carrier frequency of thyristor in the time of switch is taking several kHz～tens of kHz as main flow, and the noise of the higher hamonic wave of generation carrier frequency flows out such problem to business with the circuit of power supply 50.Therefore,, in order to reduce noise, pattern of wants filter circuit etc. is tackled.Particularly, as the effective ways of the method that suppresses the noise contribution that frequency ratio below 1MHz is lower be: the static capacity that increases X capacitor 47a.
But the static capacity that increases X capacitor 47a means that the electric charge that is stored in X capacitor 47a increases., in the time that being extracted from socket 43, attaching plug 44 produces the large such problem of residual voltage change of inserting sword two interpolars.Not get an electric shock in order touching user to insert when sword two interpolar, this residual voltage to be reduced to below predetermined voltage in need to be during the scheduled time.Therefore,, for the electric charge storing is discharged, the discharge resistance 49a being connected side by side with X capacitor 47a is set conventionally.But this discharge resistance 49a flows and has electric current all the time during power supply energising, in the time of holding state, also continue the such problem of power consumption even if therefore exist.Therefore,, in order to reduce power consumption, need to make discharge resistance 49a there is high as far as possible resistance value.
But, as described above, within need to be during the scheduled time, residual voltage be reduced to below predetermined voltage, therefore discharge resistance 49a is necessary for below the resistance value being determined by the time constant between the static capacity of itself and X capacitor 47a.Therefore, can not merely increase resistance value, in order to increase the resistance value of discharge resistance 49a, the static capacity that must dwindle X capacitor 47a.
But, because the motor of frequency conversion drive above-mentioned in holding state is not worked, so noise intensity is low, even and the static capacity of dwindling X capacitor 47a also there will not be problem, but carry out in the operation process of work at the motor of frequency conversion drive, noise intensity uprises, and therefore can not merely dwindle the static capacity of X capacitor 47a.Therefore,, in order to address this problem, at the back segment of power relay 46 (across power relay 46 in off-premises station 3 sides), X capacitor 47b and discharge resistance 49b are set.Thus, while freezing, heat, dehumidify at air conditioner 1 running work such, connect at power relay 46, under indoor set 2 and off-premises station 3 turns round, noise intensity is high state, because X capacitor 47a is connected with X capacitor 47b, therefore can guarantee enough static capacities.In addition, under the holding state in the time that the running of the state low as noise intensity stops, by rupturing duty relay 46, and only there is the static capacity of X capacitor 47a, therefore can increase the resistance value of discharge resistance 49a.Therefore, the power consumption can not damage noiseproof feature and reduce holding state time, and can also prevent the caused electric shock of residual voltage by slotting sword two interpolars of attaching plug 44.Wherein, in Fig. 5, be equipped on the example on the same substrate of off-premises station 3 sides across power relay 46 exemplified with X capacitor 47b and discharge resistance 49b, but the not restriction independently lift-launch of substrate towards each other, to method for loading such as the connections of terminal board 67.
In addition, in the case of the so only indoor set 2 of air blast running turns round, due to the rotating speed of indoor blower 11, noise intensity is sometimes also higher, therefore adopts following structure, although off-premises station 3 does not turn round, also makes power relay 46 connect.
In addition, power circuit 24 comprises: rectification circuit 53, and it is made up of diode bridge (diode bridge) 51 and smmothing capacitor 52, for converting DC voltage with the electric power of power supply 50 to from alternating voltage from business; Switching power circuit 56, it is made up of Switching Power Supply IC54 and switch transformer (switchingtransformer) 55; Adjuster 57 and adjuster 58 for sub-control power supply for main control power supply, it is located at the secondary side of switch transformer 55.
Switching power circuit 56 becomes 18.5V power supply 59,12V power supply 60, the so many export structures of 8.5V power supply 61 by the switch transformer 55 being made up of the coiling after cutting apart.In addition, 8.5V power supply 61 is connected with adjuster 57 and sub-control power supply adjuster 58 with main control power supply, and is split into the 3.3V power supply 63 that 5.3V power supply 62 that voltage reduced by main control power supply adjuster 57 and voltage have been reduced by sub-control power supply adjuster 58.
In addition, there is power supply at 18.5V power supply 59,12V power supply 60 and main control power supply with the leading portion of adjuster 57 and supply with cut-out switch (64a, 64b, 64c), do not need in the case of becoming the whole load being connected with each power supply the condition of supply of power supply, in the case of meeting the condition that becomes holding state, by being supplied with, each power supply cuts off switch (64a, 64b, 64c) disconnection, cut off to the power supply of each load and supply with, and become the structure that suppresses unwanted power consumption.Wherein, supply with and cut off switch (64a, 64b, 64c) for power supply, as long as utilize relay (relay), transistor, MOS-FET just can form, but owing to utilizing relay and transistorized situation need to be used for the drive current of turn on-switch, therefore in the present embodiment, use the MOS-FET of demand motive electric current hardly, and become the structure of the power consumption can reduce work time.
In addition, the in the situation that of in the time that power supply is supplied with cut-out switch (64a, 64b, 64c) disconnection and is seen as underload from switching power circuit 56, control such intermittence by carrying out the switch of shutdown switch power supply IC54 partly, reduce the on-off times of time per unit, reduce the summation of the switching losses of time per unit, and become the structure that reduces power consumption.
In addition, the outlet side of adjuster 57 for main control power supply, 5.3V power supply 62 is with the outlet side of adjuster 58 for sub-control power supply, 3.3V power supply 63 utilizes diode or to connect, in the situation that power supply is supplied with cut-out switch 64c connection, supply with electric power from the main control power supply that output voltage is higher with adjuster 57, in the situation that power supply is supplied with cut-out switch 64c disconnection, supply with electric power from sub-control power supply with adjuster 58.
In addition, each adverse current prevents that diode (65a, 65b) from utilizing VF for the few Schottky diode of the such pressure drop of 0.3V (Schottky diode).Therefore, each adverse current prevents that the voltage of the cathode side of diode (65a, 65b) from being 5V in the situation that power supply is supplied with cut-out switch 64c connection, in the situation that switch 64c disconnection is cut off in power supply supply, is 3V.The switching that power supply is supplied with the on/off of cutting off switch 64c judges whether to meet predetermined condition by utilizing microcomputer 29 to carry out calculation process as shown in Figure 7, Figure 8 like that, determines whether carrying out.
In addition, microcomputer 29, the arithmetic processing section 68 that comprises master clock oscillating circuit 32 and secondary clock oscillation circuit 33, the signal receiving part 8 that comprises infrared ray photo detector 19, emergency operation switch 66, detect from the running instruction of said external and transfer to the needed MIN circuit of operating condition and load and be connected to each adverse current and prevent the cathode side of diode (65a, 65b) from holding state; The adverse current that when holding states such as EEPROM31, display part 20, indoor and outdoor telecommunication circuit 42, unwanted circuit and load are connected to main control power supply adjuster 57 sides prevents the anode-side of diode 65a.
In addition, microcomputer 29 and infrared ray photo detector 19 use the element that minimum operating voltage is 5V for 2.7V, common operating voltage.Therefore, owing to only supplying with electric power to the circuit limiting and load when the holding state, so can reduce power consumption, and the supply voltage that makes arithmetic processing section 68, signal receiving part 8 is reduced to 3V in the mode of linearity from 5V and drives, therefore be stable duty, and can reduce power consumption.
In addition, as described above, the two ends that when supply voltage of arithmetic processing section 68 and holding state, the supply voltage of unwanted circuit, load is connected to adverse current and prevents diode 65a in the mode of separating, therefore produce and prevent by adverse current the corresponding potential difference of pressure drop that diode 65a causes.But as described above, adverse current prevents that diode 65a from utilizing the Schottky diode that pressure drop is few, can suppress thus for the potential difference in the maximum rated voltage of microcomputer 29.
In addition, as described above, supplying with adjuster 58 electric power coming from sub-control power supply is the electric power of only supplying with to the load limiting when the holding state,, compared with main control power supply is supplied with adjuster 57 in the running electric power, is therefore considerably less electric weight.That is, the electric weight that sub-control power supply is supplied with adjuster 58 is few, and therefore it can utilize the adjuster that output current supply capacity is lower.Generally speaking, adjuster needs more driving electric power in the situation that load current is many in order to ensure electric current amplification factor.In addition, in the time that design aspect is also considered maximum load, and design like this, the trend that therefore exists circuit efficiency to reduce in the time of low load, in the time of low load, with respect to output current, the ratio of drive current is higher.On the other hand, for the lower adjuster of output current supply capacity, element, in the underloaded situation such as load small-sized and that limit when the holding state, can use near the best efficiency point of adjuster.Therefore, by making sub-control power supply adjuster 58 for the lower adjuster of output current supply capacity, the power consumption can further be reduced in holding state time.
Wherein, as described above, in the present embodiment, adopt the structure of utilizing diode or to carry out division driving power supply, as other mode, also considered following.
As shown in Figure 6, for the mode of fully cutting apart power supply as follows, that is: microcomputer 29, comprise the signal receiving part 8 of infrared ray photo detector 19, the MIN limited circuit that emergency operation switch 66 grades also need in the time of holding state, the electric power of load is all the time from being supplied with the reduction voltage circuit that adjuster 58 forms by sub-control power supply, for EEPROM31 (read-write exterior storage medium), inlet temperature thermistor 34, heat exchanger temperature-sensitive resistance 35, humidity sensor 36, indoor and outdoor telecommunication circuit 42, the member that the current potential below 29 drives with the current potential identical with microcomputer 29 or microcomputer such as display part 20 grades does not need alive circuit in the time of holding state, load, supply with electric power from the reduction voltage circuit being formed with adjuster 57 by main control power supply.
In the manner, with respect to above-mentioned diode or mode, although microcomputer 29, comprise the signal receiving part 8 of infrared ray photo detector 19, emergency operation switch 66 grades shift needed MIN circuit to operating condition, the supply voltage of load cannot switch to low-voltage in the time of holding state, but by by the power loss reduced amounts causing that diminishes of the difference between input voltage (8.5V) and the output voltage (5V) of adjuster 58 for sub-control power supply, do not prevent diode (65a by adverse current, the amount of loss 65b) causing, can there is no the larger circuit structure of simplifying by the power consumption aspect of performance in the time of holding state deterioratedly.
In addition, in this structure, sub-control power supply is also the structure to limited load supply powers such as microcomputers 29 only with adjuster 58, therefore can utilize the lower adjuster of output current supply capacity that can drive with high efficiency in the time of low current, the power consumption while being reduced in holding state.
In addition, the situation that uses adjuster in reduction voltage circuit has been described in the present embodiment, but reduction voltage circuit is the circuit mode such as limit switch adjuster, drop-away voltage adjuster (dropper regulator), DC/DC converter not, as long as suitably select according to cost, installing space, circuit efficiency.
Then the action case while, utilizing Fig. 9, Figure 10, Figure 11, Figure 12 that normal mode, low-speed mode are described.The sequential chart of action case when Fig. 9 is the carrier signal reception while representing normal mode, low-speed mode.Figure 10 is the sequential chart of the recovery action case to normal mode while representing low-speed mode.Figure 11 is the sequential chart of the action case while representing noise reception.Figure 12 is other routine sequential charts of the recovery action case to normal mode while representing low-speed mode.
In addition, in this structure, in the oscillating circuit using at the work clock of microcomputer 29, be provided with master clock oscillating circuit 32, the such two kinds of different oscillating circuits of clock frequency of secondary clock oscillation circuit 33.In the time that air conditioner 1 turns round, each load is communicated by letter, controlled to microcomputer 29 in order to carry out between off-premises station 3, needs calculation process at a high speed, and work clock must be also correspondingly high clock frequency.But the electric power that the such situation of raising clock frequency can exist microcomputer 29 to consume uprises such problem.Therefore, in order to reduce this power consumption, calculation process in high speed as operation process is in requisite situation, so that carry out work with the normal mode of the high master clock oscillating circuit 32 of clock frequency, in the time not needing to carry out the holding state of calculation process at a high speed, utilize the secondary clock oscillation circuit 33 that clock frequency is low to switch to low-speed mode, and become the structure that reduces the power consumption of microcomputer 29 in the time of holding state.
In addition, in the past, the detection of the carrier signal of input infrared ray photo detector 19, the detection of the signal of inputting by emergency operation switch 66, the calculation process that other are relevant with control etc. are due to the relation of cpu load rate, also there is limit even if reduce clock frequency, particularly read the detection that also needs to carry out Hi or Lo from the carrier signal of remote controller 7, bit is 0 or 1 calculation process, the preservation of bit information, form 8 than top grade signal code, and need to carry out and be stored in the many calculation process such as relatively between the code of arithmetic unit, at least need the clock frequency of several MHz.But, as described above, improve work clock and can cause power consumption to increase, so the oscillator that in the secondary clock oscillation circuit 33 of this structure, frequency of utilization is 32.768kHz lower than the frequency of the 38kHz of the carrier frequency as infrared signal.Therefore, can reduce power consumption, but as shown in Figure 9, be accompanied by the reduction of clock frequency, the sampling period is also elongated, therefore under such state, cannot read the carrier signal from remote controller 7.
Therefore, in order to solve this situation, as shown in figure 10, during more than the prearranged multiple in the sampling period of depending on clock frequency in the time of above-mentioned holding state, there is no the output signal of bit information in the beginning setting of the carrier signal from remote controller 7, and continue to send the carrier signal with bit information.Thus, under the low low-speed mode of clock frequency, None-identified has the signal of information, receives the not output signal of this bit information but can detect.Therefore, in the time detecting the output signal that receives this bit information not, again work clock is switched to master clock oscillating circuit 32, the sampling period is turned back to the cycle when common, can identify thus the carrier signal with bit information that continues to send.
As described above, can only change the carrier signal from remote controller 7, signal receiving part 8 use of also keeping intact, therefore can become cheap system architecture.
In addition, in this structure, as described above, according to the output signal that there is no bit information, return to operating condition from holding state.Therefore,, in the time receiving noise, other infrared signal, whether be the output signal that there is no bit information of sending from remote controller 7, so likely return to operating condition from holding state if cannot differentiate.Therefore, as shown in figure 11, recover from holding state, judge the carrier signal of sending be afterwards whether according to the form of juridical person's household appliances association, from the carrier signal of the paired remote controller 7 of indoor set 2, if different signals returns to the control of holding state at once.In addition, as shown in figure 12, for the signal that there is no bit information, Hi detected for 3 times for example continuously, the double Lo of detecting, recover afterwards in the combination during Hi and during Lo, can also become thus and be difficult for the structure recovered due to noise with leading to errors.
Claims (5)
1. an air conditioner, it can utilize remote controller to carry out operated from a distance, it is characterized in that,
This air conditioner comprises:
Signal receiving circuit, it is for receiving the carrier signal of sending from above-mentioned remote controller; And
Arithmetic processing section, it is for above-mentioned carrier signal is carried out to calculation process,
Above-mentioned arithmetic processing section has clock frequency switch unit, in the time of the running halted state of above-mentioned air conditioner, be switched to following low-speed mode: the work clock that makes above-mentioned arithmetic processing section is below the frequency of the work clock while conventionally turning round and cannot understands the low-speed mode of above-mentioned carrier signal
In above-mentioned low-speed mode, the work clock that makes above-mentioned arithmetic processing section is that the frequency of the work clock while conventionally turning round is following and below carrier frequency for above-mentioned carrier signal,
Wherein, under the state that is above-mentioned low-speed mode at the work clock of above-mentioned arithmetic processing section, during more than the prearranged multiple in the sampling period of depending on clock frequency in above-mentioned low-speed mode, have input in above-mentioned signal receiving circuit time, the clock frequency while switching to common running by above-mentioned clock frequency switch unit.
2. air conditioner according to claim 1, is characterized in that,
After the clock frequency when above-mentioned low-speed mode switches to above-mentioned common running by the work clock of above-mentioned arithmetic processing section, do not input in the given time in the situation from the carrier signal with bit information of above-mentioned remote controller, again switch to above-mentioned low-speed mode.
3. air conditioner according to claim 1, is characterized in that,
This air conditioner has: remote controller, during more than the prearranged multiple in its sampling period of depending on clock frequency in above-mentioned low-speed mode, there is no the output signal of bit information in the beginning setting of the carrier signal of sending from above-mentioned remote controller, and continue to send the carrier signal with bit information.
4. air conditioner according to claim 1, is characterized in that,
This air conditioner has: electric power is supplied with cutting unit, and it is for cutting off the electric power of supplying with to the load beyond the certain loads including above-mentioned arithmetic processing section and above-mentioned signal receiving circuit when the above-mentioned low-speed mode.
5. air conditioner according to claim 1, is characterized in that,
The power circuit of above-mentioned air conditioner is made up of switching power circuit, carries out intermittently in time, off and on work in the time of running halted state.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2010232079A JP5537378B2 (en) | 2010-10-15 | 2010-10-15 | Air conditioner |
| JP2010-232079 | 2010-10-15 |
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| CN103968498B (en) * | 2013-01-31 | 2016-09-14 | 珠海格力电器股份有限公司 | Determine method and the convertible frequency air-conditioner of transducer air conditioning carrier frequency |
| KR102043069B1 (en) * | 2017-09-05 | 2019-11-11 | 엘지전자 주식회사 | Apparatus for both humidification and air cleaning and method thereof |
| JP7292061B2 (en) * | 2019-03-08 | 2023-06-16 | 三菱重工サーマルシステムズ株式会社 | Control device, air conditioner, control method and program |
| CN114364927B (en) * | 2019-09-10 | 2023-08-08 | 三菱电机株式会社 | Indoor unit of air conditioner |
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| CN102455037A (en) | 2012-05-16 |
| KR20120039455A (en) | 2012-04-25 |
| KR101310573B1 (en) | 2013-09-23 |
| JP5537378B2 (en) | 2014-07-02 |
| JP2012083091A (en) | 2012-04-26 |
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Effective date of registration: 20160812 Address after: Hongkong, China Patentee after: Johnson Controls Hitachi air conditioning technology (Hongkong) Co., Ltd. Address before: Tokyo, Japan, Japan Patentee before: Hitachi Appliances Inc. |
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Effective date of registration: 20180620 Address after: Tokyo, Japan, Japan Patentee after: Hitachi Johnson Controls Air Conditioning Co., Ltd. Address before: Hongkong, China Patentee before: Johnson Controls Hitachi air conditioning technology (Hongkong) Co., Ltd. |