JP2004271149A - Controller for air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a controller for an air conditioner capable of immediately corresponding to automatic selection of operation mode close to user's physical sense without providing a memory storing outside air temperature and indoor temperature for selecting operation mode. <P>SOLUTION: This air conditioner is constituted to compare operation mode MA selected on an automatic mode selection table 32 by an automatic mode selection means based on outside air temperature and indoor temperature with operation mode MM selected manually by a user in accordance with his/her liking. A compensation means is provided to compensate outside air temperature set values T01 to T03 and indoor temperature set values TR1 to TR3 on the automatic mode selection table 32 to select the operation mode MM by outside air temperature and indoor temperature when the operation mode MA differs from the operation mode MM. Consequently, since operation mode can be selected by the automatic mode selection means in accordance with user's liking from the next time operation time, it is possible to immediately correspond to automatic selection of the operation mode close to user's physical sense without providing the memory storing outside air temperature and indoor temperature for selecting operation mode. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention provides an air conditioner in which any one of operation modes such as cooling operation, heating operation, dehumidification or dry operation is determined by a user's arbitrary selection or by automatic selection from a data table provided in the control device. It relates to a control device.
[0002]
[Prior art]
Generally, in an air conditioner equipped with this type of automatic mode selection means, for example, a detection means for detecting the outside air temperature and the room temperature, and an operation mode based on the outside air temperature and the room temperature output from these detection means. Selection means for selecting the operation mode, the operation mode selection means automatically selects an operation mode, and a signal for performing operation control according to the operation mode is given to the output means. It is configured to operate a drive unit that controls functions.
[0003]
In such a configuration, conventionally, the operation mode selection reference value in the automatic mode selection means is generally a standard temperature value comprehensively obtained from a temperature that is comfortable in the sense of temperature of an unspecified number of users. The cooling operation mode is selected if the outside air temperature or the room temperature is higher than the standard temperature, and the heating operation mode is selected if the outside air temperature or the room temperature is lower than the standard temperature. Was to be selected.
[0004]
By the way, it is well known that in reality, there is a considerable individual difference in the temperature at which the user feels comfortable. Therefore, when the temperature value set based on the sensed temperature sensation of the unspecified number of users is used as the operation mode selection reference value as in the conventional example described above, the operation is performed in a mode contrary to the intention of each user. However, it could not be said that the operation control according to the individual wishes of a wide range of users was realized.
[0005]
In order to improve such a problem, the operation mode selection reference value is selected at the standard temperature, the selection reference value at a temperature lower than the standard temperature, and the operation mode selection reference value is selected at a temperature higher than the standard temperature. It has been proposed that a plurality of selection reference values such as reference values are prepared, and any one of these selection reference values can be selected to automatically select an operation mode suitable for the user's preference ( For example, see Patent Document 1).
[0006]
Further, the operation mode selected by the automatic mode selection means and various data such as the outside air temperature and the room temperature for selecting the operation mode are stored and stored in the first memory, and the outside air of the operation mode selected by the user is stored. Each data of the temperature and the room temperature is stored and stored in the second memory, and when the operation is started by the automatic mode selection means, the respective data stored in the first memory and the second memory are compared. If the corresponding operation mode is stored in the second memory, the operation mode stored in the second memory is selected to perform the air conditioning operation, and if the corresponding operation mode is not stored, Also, it has been proposed that the vehicle be driven in the operation mode stored in the first memory to automatically select an operation mode suitable for each user's individual preference (for example, see Patent Document 2).
[0007]
[Patent Document 1]
JP-A-04-61253 (page 3-4, FIG. 3)
[Patent Document 2]
JP-A-06-88637 (page 2-3, FIG. 1-4)
[0008]
[Problems to be solved by the invention]
However, in the case of such a prior art example, since the temperature is slightly increased or decreased based on the standard temperature, it cannot be said that it is possible to sufficiently cope with individual differences in the sense of temperature of the user. Further, at the start of operation by the automatic mode selection means, if the operation mode corresponding to each data such as the detected outside air temperature and room temperature is in the operation modes stored in the second memory, In the automatic mode selection means for selecting the driving mode selected by the user, it is possible to respond to individual differences in the sense of temperature and temperature of the user, but it is possible to store data such as the driving mode selected by the user. Two memories were required. Further, if the data is not stored in the second memory, the operation in the operation mode selected by the automatic mode selection means is selected, so that it is possible to sufficiently cope with the user's sense of temperature. By then, it took a certain amount of time.
[0009]
Therefore, an object of the present invention is to solve such a problem, and an operation mode that is close to a user's sense of temperature without storing data such as an outside air temperature and an indoor temperature. It is an object of the present invention to provide a control device of an air conditioner which responds to the automatic selection of the air conditioner.
[0010]
[Means for Solving the Problems]
The invention according to claim 1 has a data table including heating, dehumidification, and cooling operation modes, and automatically selects a corresponding operation mode from the data table based on the outside air temperature and the indoor temperature to operate. In a control device for an air conditioner, comprising: an automatic mode selection unit and a manual mode selection unit for arbitrarily selecting and operating the operation mode, when the operation mode is selected and operated by the manual mode selection unit, the outside air temperature is reduced. And a correcting means for correcting the outside air set value and the room temperature set value of the data table based on the room temperature.
[0011]
The invention according to claim 2 is the device according to claim 1, wherein the correction unit is configured to execute the data processing based on the outside air temperature and the room temperature when the operation mode is selected by the manual mode selection unit. The apparatus is characterized in that the outside air temperature setting value and the room temperature setting value in the table are corrected.
[0012]
According to a third aspect of the present invention, in the device according to the first or second aspect, the correction unit is configured to select one of the plurality of outside air temperature set values and the plurality of indoor temperature set values, or , Correcting the indoor temperature set value.
[0013]
According to a fourth aspect of the present invention, in the first or second aspect, the correction means simultaneously corrects each of the plurality of outside air set values and the plurality of indoor temperature set values. Is what you do.
[0014]
According to a fifth aspect of the present invention, in the one of the first to fourth aspects, the correction means includes a different data table for each season in the control device, and corrects each data table. It is characterized by having made it.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0016]
FIG. 1 is an electric circuit diagram of an air conditioner including an indoor unit and an outdoor unit. In this figure, reference numeral 1 denotes a commercial AC power supply of 100 [V], which supplies AC power to an indoor unit and an outdoor unit. A varistor 2 absorbs a surge voltage. A coil 3 and a choke coil 4 constitute a noise filter together with the varistor 2. Reference numeral 5 denotes a diode bridge, which rectifies a single-phase commercial AC in a full-wave manner and outputs the rectified AC to an inverter bridge 6. At this time, the AC voltage having an effective value of 100 [V] is converted into a DC voltage of about 280 [V] by the voltage doubler rectifier circuit 7 and then supplied to the inverter bridge 6. The inverter bridge 6 has six switching elements connected in a three-phase bridge shape. The switching elements are turned ON / OFF based on the PWM theory and output a three-phase pseudo sine wave to the compressor 8. is there.
[0017]
A DC detection circuit 9 converts an AC current detected by a DC transformer (CT) 10 into a DC voltage and applies the DC voltage to an A / D (analog / digital) input port of the outdoor control unit 11. The outdoor control unit 11 corrects the frequency of the pseudo sine wave supplied to the compressor 8 so that the current detected by the current detection circuit 9 does not exceed a predetermined current.
[0018]
A compressor temperature sensor 12 detects the temperature of the compressor 8. The outdoor control unit 11 inputs this temperature via the temperature detection circuit, and corrects the frequency of the pseudo sine wave supplied to the compressor so that the temperature does not exceed the predetermined temperature as described above.
[0019]
An outdoor interface 13 transmits and receives data between the indoor control unit 20 of the indoor unit and the outdoor control unit 11 of the outdoor unit. From the indoor unit, operation signals for a cooling operation, a heating operation, a dehumidifying operation, a signal for determining a frequency of a three-phase pseudo sine wave supplied to the compressor 8, and the like are sent. Further, it transmits the outside air temperature data detected by the outside air temperature sensor 19, data indicating an abnormality at the time of occurrence of an abnormality, and the like to the indoor unit.
[0020]
Reference numeral 14 denotes a signal amplifying circuit that amplifies the power of the ON / OFF signal output from the outdoor control unit 11 to a level that can drive the switching element of the inverter bridge 6. The switching signal based on the PWM theory is generated by the outdoor control unit 11 based on the frequency signal.
[0021]
Reference numerals 15 and 16 denote relay contact pieces and phototriacs, respectively, which are controlled by the outdoor control unit 11. Reference numeral 17 denotes a four-way valve, and reference numeral 18 denotes an outdoor blower for an outdoor heat exchanger. By switching the four-way valve, it is switched between a refrigerant cycle for cooling operation and a refrigerant cycle for heating operation. The rotation speed of the outdoor blower 18 is changed by changing the outside air temperature, and the method is performed by changing the firing angle of the phototriac.
[0022]
An indoor control unit 20 controls the indoor unit. The indoor control unit 20 transmits and receives the data to and from the outdoor control unit 11 via the interface 21. Reference numeral 22 denotes a normally open contact piece, whose opening and closing operation is controlled by a relay 23. When performing the air-conditioning operation, the indoor control unit 20 energizes the relay 23 to close the contact piece 22 and supply electric power to the outdoor unit. When the contact piece 22 is open, the interface 21 simultaneously cuts off the transmission and reception of signals so that no signals are sent to the outdoor unit.
[0023]
An indoor temperature sensor 24 detects the temperature of the room to be conditioned. The indoor control unit 20 obtains an increase / decrease value of the frequency of the pseudo sine wave supplied to the compressor 8 from the indoor temperature detected by the indoor temperature sensor 24 and the desired temperature, and transmits a new frequency signal to the outdoor unit. Methods for obtaining the increase / decrease value of the frequency include PID control and fuzzy control.
[0024]
25 is an input circuit for setting operation data. When using a remote controller or the like, the operation data is transmitted from the remote controller as a wireless signal and received by the input circuit.
[0025]
Reference numerals 26 and 27 denote fan motors for blowing air and motors for driving flaps for changing the direction of air flow, which are controlled by motor controllers 28 and 29. Reference numeral 30 denotes a power supply circuit which supplies DC power to the indoor unit.
[0026]
For example, as shown in FIG. 2, the indoor control unit 20 controls the rotation speed of the fan motor 26 and the rotation angle of the flap driving motor, and also includes a controller 31 having a clock and a calendar inside, and a cooling operation. And an automatic mode selection table (data table) 32 for automatically selecting an operation mode such as a heating operation.
[0027]
In addition, the controller 31 of the indoor control unit 20 includes a function for automatically selecting an operation mode from the automatic mode selection table 32 based on the outside air temperature and the room temperature, and an automatic mode selection unit. A manual mode selecting means is provided with a function of operating and selecting an operation mode arbitrarily.
[0028]
In the automatic mode selection means, any one of the operation modes set in the automatic mode selection table 32 is selected based on the outside air temperature and the indoor temperature, and the automatic mode selection table includes: As shown in FIG. 3, it is a data table in which a plurality of temperature zones are set using a plurality of room temperature set values TR1, TR2, TR3 and a plurality of outside air temperature set values T01, T02, T03. For example, if the outside air temperature is less than 18 ° C., the heating mode is selected regardless of the room temperature. If the outside air temperature is 18 ° C. or more and less than 20 ° C., the room temperature is 22 ° C. If the temperature is lower than 22 ° C., the heating mode is selected. If the temperature is 22 ° C. or higher, the dehumidification mode is selected.
[0029]
By the way, according to the present invention, the outside air temperature set value and the room temperature set value of the automatic mode selection table 32 used by the automatic mode selection means are arbitrarily selected by the user by the manual mode selection means. An automatic mode selection unit that corrects the automatic mode selection table 32 based on an operation mode, an outside air temperature at the time when the operation mode is selected, and an indoor temperature, thereby realizing an automatic mode selection unit suitable for a user's preference. For example, when the outside air temperature is 19 ° C. and the room temperature is 22 ° C., the automatic mode selection means selects the dehumidification mode from the automatic mode selection table 32. If the user selects the heating mode with the manual mode selection means, the automatic mode selection table 32 is corrected, and the same outside air temperature as above is set to 1 next time. ° C., if the room temperature is 22 ° C., is intended to as operation mode of the said user is the heating mode even if the operation in the automatic mode selection means is selected.
[0030]
Before that, the operation mode selection operation by the automatic mode selection means and the manual mode selection means will be described. In addition, in order to prevent confusion of the description, the operation mode in which the air conditioner actually operates is referred to as an operation mode M, the operation mode selected by the automatic mode selection means is the operation mode MA, and the user is arbitrarily selected by the manual mode selection means The following description will be given with the selected operation mode as the operation mode MM. As shown in the flowchart of FIG. 4, when the stop of the air-conditioning apparatus is determined in step S1, the determination in step S1 is repeated, and when the start of operation is determined, the outside air temperature sensor 19 of the outdoor unit is determined in step S2. , And the indoor temperature sensor 24 detects the indoor temperature.
[0031]
In step S3, it is determined whether or not the operation start is the first operation start after the power is turned on. If the operation is the first operation start after the power is turned on, the process proceeds to step 5, and the first operation after the power is turned on is performed. If the operation is not started, it is determined in step S4 whether the stop time has passed a predetermined time (for example, 4 hours). If it is determined in step S4 that the stop time has not elapsed for the predetermined time, the process proceeds to step S6. If it is determined that the predetermined time has elapsed, the automatic mode selection table 32 is determined in step S5. The operation mode MA is selected.
[0032]
The reason for judging whether or not the air conditioner has been stopped for the predetermined time or more is that shortly after the operation of the air conditioner is stopped, when the operation is started again, the temperature conditions of the outside air temperature and the indoor temperature are reduced. Since it is considered that the air conditioner has not changed much, there is no problem if the air conditioner is started to operate in the operation mode M of the previous operation. This is because it is considered that the temperature or the room temperature has changed, and there is a high possibility that operation in an operation mode M different from the operation mode M selected last time is required. For this reason, when the stop time has passed a predetermined time (for example, 4 hours) or more, the operation mode MA is selected again.
[0033]
In step 6, it is determined whether the selection of the operation mode M is the automatic mode selection means or the manual mode selection means arbitrarily selected by the user. Then, the air conditioning operation is started with the operation mode MA selected in step S5 as the operation mode M, and if the manual mode selection means function, the operation proceeds to step S8, and the operation mode MM arbitrarily selected by the user is selected. Is set to the operation mode M, and the air-conditioning operation is started.
[0034]
Next, a correction means for correcting the automatic mode selection table 32 will be described. As shown in the flowchart of FIG. 5, first, it is determined in step S10 whether or not the operation has been started by the manual mode selection unit. If the operation has been started by the manual mode selection unit, the process proceeds to step S12. If the operation has been started by the automatic mode selection means, the process proceeds to step S11, and it is determined whether or not the selection has been changed to the manual mode selection means. If it is determined in step S11 that the selection change to the manual mode selection unit has not been performed, the process returns to step S10, and the process is repeated from step S10 again.
[0035]
If it is determined in step S11 that the selection has been changed by the manual mode selection means, the process proceeds to step S12, in which the room temperature data and the outside air temperature data at the time when the selection was changed are detected, and Temporarily stores the operation mode MM arbitrarily selected in the memory.
[0036]
Next, in step S13, it is determined whether one hour or more has elapsed since the start of the operation of the air-conditioning apparatus. If it has not elapsed, the process proceeds to step S17. The corresponding operation mode MA is selected from the automatic mode selection table 32 based on the room temperature and the outside air temperature.
[0037]
Then, in step S15, the operation mode MM selected by the user and the operation mode MA selected from the automatic mode selection table 32 are compared. At this time, if both are the same operation mode, for example, the operation mode MM selected by the user is the heating mode and the operation mode MA selected from the automatic mode selection table 32 is the heating mode, step S17 If the operation mode is different, for example, if the operation mode MM selected by the user is the heating mode and the operation mode MA selected from the automatic mode selection table 32 is the dehumidification mode, the automatic operation is performed in step S16. The outside air temperature set values T01 to T03 or the room temperature set values TR1 to TR3 in the mode selection table 32 are changed so that the operation mode MA is selected as the same heating mode as the operation mode MM.
[0038]
In step S17, it is determined whether or not there is an instruction to initialize the automatic mode selection table 32. If there is no instruction to initialize, the process returns to step S10, and the flowchart is repeated again. For example, the automatic mode selection table 32 is initialized, the process returns to step S10, and this flowchart is repeated.
[0039]
Next, the correcting means of the automatic mode selection table 32 will be described. In the automatic mode selection table 32 shown in FIG. 6, it is determined in steps S10 and S11 that the operation has been started by the manual mode selection unit or that the function has been changed from the automatic mode selection unit to the manual mode selection unit. At this time, assuming that the outside air temperature data is a temperature corresponding to 18.5 ° C. and the room temperature data is a temperature corresponding to 23 ° C., the position is point A on the automatic mode selection table 32 shown in FIG.
[0040]
In step S14, the dehumidification mode is naturally selected as the operation mode MA. At this time, if the operation mode MM selected by the manual mode selection means is the dehumidification mode, the automatic mode selection table 32 is not corrected in step S15 assuming that the operation mode MA and the operation mode MM are the same. If the operation mode MM is the heating mode, for example, the operation mode MA selected by the automatic mode selection means and the operation mode MM selected by the manual mode selection means in step S15. Is determined to be an operation mode different from the operation mode MM in step S16 under the temperature conditions of the outside air temperature and the indoor temperature as indicated by an arrow X in FIG. For example, the outside air temperature set value T01 is changed to 19 ° C. so as to be selected as MA. Thus, when the outside air temperature data is less than 19 ° C. next time, the heating mode is selected even if the user operates with the automatic mode selection means.
[0041]
Similarly, for example, when the outside air temperature is 21 ° C. and the room temperature is 26.5 ° C., the position is point B on the automatic mode selection table 32, and the dehumidification mode is selected by the automatic mode selection means. However, when the user selects the cooling mode as the operation mode MM by the manual mode selection means, it is determined in step S15 that the operation mode MA is different from the dehumidification mode and the operation mode MM cooling mode. A determination is made, and in step S16, as shown by the arrow Y in FIG. 6, the cooling mode same as the operation mode MM is selected as the operation mode MA under the temperature conditions of the outside air temperature and the indoor temperature, for example, The room temperature set value TR3 is changed to 26 ° C. Thereby, when the outside air temperature data is 20 ° C. or more and the room temperature data is 26 ° C. or more next time, the cooling mode is selected even if the user operates with the automatic mode selection means.
[0042]
In the present embodiment, as described above, when the operation mode MA selected by the automatic mode selection unit and the operation mode MM selected by the manual mode selection unit are different modes, the outdoor temperature set value The operation mode MA selected by the automatic mode selection unit is corrected by correcting one of the set values of T01 to T03 or the room temperature set values TR1 to TR3, and the operation mode MM selected by the manual mode selection unit. The correction means has been described to make the same correction. However, the present invention is not particularly limited to this. The outdoor temperature set values T01 to T03 and the indoor temperature set values TR1 to TR3 may be corrected. In the above description, the outside air temperature set values T01 to T03 and the room temperature set values TR1 to TR3 are corrected. However, the outside air temperature set values T01 to T03 and the room temperature set values TR1 to TR3 are also corrected. May be used as correction means for correcting each of them at the same time.
[0043]
The automatic mode selection table 32 is not limited to one, and may be prepared for four seasons, spring, summer, autumn and winter. As a result, the operation mode suitable for the user's preference can be automatically selected for each season, so that a more comfortable air-conditioning operation can be performed.
[0044]
Further, in the present embodiment, the outdoor temperature set values T01 to T03 and the indoor temperature set values TR1 to TR3 of the automatic mode selection table 32 are directly corrected. However, a correction table is provided in the indoor control unit 20, and the correction table is provided. When correction data for correcting the outside air temperature and the room temperature is stored in a correction table, and the operation mode MA is selected by an automatic mode selection unit, the outside air temperature and the room temperature are corrected using the correction table, The operation mode MA may be selected from the automatic mode selection table 32.
[0045]
【The invention's effect】
As described above, in the control device of the air-conditioning apparatus of the present invention, when the operation mode selected by the user in the manual mode selection means and the operation mode selected by the automatic mode selection means are different, Since the automatic mode selection means is provided with a correction means for correcting the outside air temperature set value of the table data and the room temperature set value, the operation mode according to the user's preference can be changed from the next operation. Since the selection can be made by the automatic mode selection means, there is no memory for storing the outside air temperature and the room temperature for selecting the operation mode, and it is possible to immediately respond to the automatic selection of the operation mode close to the user's sense of temperature. it can.
[Brief description of the drawings]
FIG. 1 is a main block diagram showing an electric circuit of an air conditioner.
FIG. 2 is a block diagram of a main part of an indoor control unit.
FIG. 3 is a diagram showing an automatic mode selection table.
FIG. 4 is a flowchart showing selection of an operation mode M of the air conditioner.
FIG. 5 is a flowchart showing the operation of the correction means according to the present invention.
FIG. 6 is a diagram showing an automatic mode selection table corrected according to the present invention.
[Explanation of symbols]
19 outside air temperature sensor 20 indoor control unit 24 indoor temperature sensor 25 input circuit 31 controller 32 automatic mode selection table T01 to T03 outside air temperature setting values TR1 to TR3 indoor temperature setting values

Claims (5)

An automatic mode selection means having a data table including heating, dehumidification and cooling operation modes, and automatically selecting and operating a corresponding operation mode from the data table based on the outside air temperature and the indoor temperature; and the operation mode A manual mode selection means for arbitrarily selecting and operating the air conditioner control device,
When the operation mode is selected and operated by the manual mode selection unit, a correction unit that corrects an outside air set value and an indoor temperature set value of the data table based on the outside air temperature and the indoor temperature is provided. Control device for air conditioner. The correction means corrects the outdoor air set value and the indoor temperature set value of the data table based on the outdoor air temperature and the indoor temperature at the time when the operation mode is selected by the manual mode selection means. The control device for an air-conditioning apparatus according to claim 1, wherein: The said correction | amendment means correct | amends the outside-air temperature set value of either of these some outside-air temperature set values and this several indoor-temperature set value, or a room temperature set value. Air conditioner control device. The control device of the air conditioner according to claim 1, wherein the correction unit corrects each of the plurality of outside air temperature set values and the plurality of indoor temperature set values simultaneously. The air conditioner according to any one of claims 1 to 4, wherein the correction unit includes a different data table in the control device for each season, and corrects each data table. Control device.

Images