JP2010261610A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner operated in an operation mode suitable for a user's preference. <P>SOLUTION: This air conditioner has: a temperature memorizing means B6 for memorizing an indoor set temperature, an indoor temperature, and an outdoor suction temperature of an outdoor unit (not shown in the figure); an operation mode determining means B4 determining cooling, dehumidifying or heating in an automatic operation on the basis of an indoor suction temperature of an indoor unit (not shown in figure), the outdoor suction temperature, and the set temperature memorized in the temperature memorizing means B6; and a manual mode change detecting means B5 detecting that the operation mode is manually changed by the user during the operation in the mode determined by the operation mode determining means B4. In the case where the operation mode is manually changed from cooling to heating or in reverse, a threshold value for determining the operation mode is corrected on the basis of the indoor suction temperature, the outdoor suction temperature, and the indoor set temperature at that time. Thus the air conditioner is operated in the operation mode suitable for the user's preference from the next operation, and the comfortableness is improved. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an air conditioner, and more particularly to operation control of an air conditioner.

  In a conventional air conditioner, determination of cooling / dehumidification or heating in automatic operation is performed based on the suction temperature of the indoor unit, the suction temperature of the outdoor unit, and the set temperature when a certain time elapses (for example, patents) Reference 1).

JP-A-8-128702

  However, in the conventional control of the air conditioner, there is a problem that the operation mode as desired by the user may not be achieved in some cases such as spring or autumn.

  This invention solves the said conventional subject, and provides the air conditioner which can be drive | operated in the operation mode suitable for a user's liking.

  In order to solve the conventional problems, an air conditioner according to the present invention includes an indoor unit and an outdoor unit, an indoor suction temperature detecting means for detecting the suction temperature of the indoor unit, and the outdoor unit. Outdoor suction temperature detection means for detecting the suction temperature of the indoor, temperature storage means for storing the indoor set temperature, indoor temperature, outdoor suction temperature, the indoor suction temperature and the outdoor suction temperature detected by the indoor suction temperature detection means In the mode determined by the operation mode determination means, the operation mode determination means for determining cooling / dehumidification or heating in the automatic operation from the outdoor suction temperature detected by the detection means and the set temperature stored in the temperature storage means During operation, the manual mode is used to detect that the operation mode has been changed manually by the user. Change detection means, and when the operation mode is manually changed from the cooling system to the heating or vice versa, the operation mode determination is made based on the indoor suction temperature, the outdoor suction temperature, and the indoor set temperature at that time. Since the threshold value is corrected, from the next driving, it is possible to drive in the driving mode suitable for the user's preference, and to improve the comfort.

  The air conditioner of the present invention corrects the mode determination threshold when the mode determination result is manually changed without conforming to the user's preference during operation in the operation mode determined by automatic operation. From the next determination, it is possible to drive in an operation mode that suits the user's preference.

Schematic of the air conditioner in Embodiment 1 of the present invention Block diagram for controlling the air conditioner Flow chart showing control of the air conditioner The flowchart which shows control of the air conditioner in Embodiment 2 of this invention. The flowchart which shows control of the air conditioner in Embodiment 3 of this invention.

1st invention is comprised from the indoor unit and the outdoor unit, and the indoor suction temperature detection means which detects the suction temperature of the said indoor unit, The outdoor suction temperature detection means which detects the suction temperature of the said outdoor unit, Temperature storage means for storing the set indoor temperature, indoor temperature, outdoor suction temperature, indoor suction temperature detected by the indoor suction temperature detection means, outdoor suction temperature detected by the outdoor suction temperature detection means, and the temperature An operation mode determination unit that performs cooling / dehumidification or heating determination in automatic operation from a set temperature stored in the storage unit, and a change of the operation mode manually by a user during operation in the mode determined by the operation mode determination unit Manual mode change detection means for detecting that the operation mode has been When manually changing from the system to heating or vice versa, the threshold for operation mode determination is corrected from the indoor suction temperature at that time, the outdoor suction temperature, and the indoor set temperature, and from the next operation Therefore, it is possible to drive in an operation mode that suits the user's preference, and to improve comfort.

  In the air conditioner according to the first aspect of the invention, in particular, in the air conditioner of the first aspect of the invention, when a certain period of time has elapsed since the start of operation, the threshold for operation mode determination is not corrected. It is possible to distinguish between changes because the mode judgment did not suit your preference and changes due to changes in the surrounding environment, and it is possible to prevent unnecessary corrections from occurring, improving comfort. I can plan.

  According to a third aspect of the present invention, in particular, in the air conditioner of the first or second aspect, when the operation mode is returned to the mode before the change or the automatic mode within a certain time, the threshold value for determining the operation mode is corrected. In this case, when the user accidentally changes the mode, correction can be prevented so that unnecessary correction is not performed and comfort can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
The air conditioner in Embodiment 1 of this invention is demonstrated using FIGS. FIG. 1 is a schematic diagram of an air conditioner according to the first embodiment.

  In FIG. 1, the air conditioner in this Embodiment is comprised from the indoor side unit 1 and the outdoor unit 2, and the indoor side unit 1 detects the suction temperature of the indoor side unit 1 in the indoor suction temperature detection means 3. And an indoor heat exchanger 4, an indoor heat exchanger temperature sensor 5, and an indoor air blower 6. The outdoor unit 2 includes an outdoor suction temperature detecting means 7 for detecting the suction temperature of the indoor unit 2, and an outdoor unit. The heat exchanger 8, the outdoor heat exchanger temperature sensor 9, the outdoor air blower 10, the compressor 11, the throttle mechanism 12, and the four-way valve 13 are provided.

  FIG. 2 is a block diagram in the control of the air conditioner in the present embodiment.

  In FIG. 2, the operation mode determination means B4 determines the operation mode based on information from the indoor set temperature storage means B1, the indoor suction temperature detection means 3, and the outdoor suction temperature detection means 7. Then, when manual mode change detection means B5 detects manual change of the operation mode, the temperature storage means B6 stores the indoor / outdoor temperature and the set temperature.

Further, when the respective conditions of the operation time measuring means B7 for measuring the operation time, the operation time storage means B8, the operation time comparison means B9, and the continuous mode determination detection means B10 for detecting the continuous mode change are satisfied, the automatic mode The mode change threshold is corrected by the threshold changing means B11.

  FIG. 3 shows a flowchart showing the control of the air conditioner in the present embodiment.

  In FIG. 3, at the start of automatic operation (ST1), each temperature is acquired by the indoor suction temperature detection means 3, the outdoor suction temperature detection means 7, and the set temperature storage means B1 in ST2.

Next, in ST3, operation mode determination means B4 performs operation mode determination from each temperature obtained in ST2, and operation is started in the determined operation mode (ST4). Thereafter, in ST5, when the manual mode change detecting means B5 detects that the operation mode has been manually changed from cooling to heating, for example, in ST6, the indoor temperature, outdoor temperature, and set temperature at that time are stored. To do.

  Based on this information, in ST7, the temperature threshold for mode change is corrected. Specifically, the mode determination compares the difference between the set temperature and the room temperature in accordance with the outside air temperature, and determines whether it is a cooling system or heating. For example, when it is determined that the heating operation is performed when the indoor / outdoor temperature is 22 ° C. and the set temperature is 20 ° C., when the user feels hot and changes the operation mode to the cooling system, the set temperature is 2 Since cooling system operation is required when the temperature is low, correction is performed so that the threshold value is 20 ° C. or less so that it can be realized.

(Embodiment 2)
FIG. 4 is a flowchart showing control of the air conditioner according to Embodiment 2 of the present invention. The same parts as those in the air conditioner in the first embodiment are given the same reference numerals, and the description thereof is omitted.

  In the control of the air conditioner in the present embodiment, when the mode change is confirmed by the manual mode change detection means B5 in the same procedure as the control in the first embodiment (ST9), in ST10, Stores indoor temperature, outdoor temperature, and set temperature. Thereafter, the operation time (TIME) stored in the operation time storage means B8 in ST11 is compared with a predetermined time (T1) set in advance, and if it is less than T1 (ST12), the mode change threshold correction (ST13).

  Here, when the operation time (TIME) is equal to or longer than the predetermined time T1, the mode change this time may not be for the mode change at the start of the automatic operation, but the mode may be changed due to a change in the situation thereafter. Since it is high, the threshold value is not changed (ST14).

(Embodiment 3)
FIG. 5 is a flowchart showing control of the air conditioner according to Embodiment 3 of the present invention. In addition, the same code | symbol is attached | subjected to the same part as the air conditioner in the said embodiment, and the description is abbreviate | omitted.

In the control of the air conditioner in the present embodiment, after the mode determination threshold is corrected (ST15), when the mode change is detected again by the manual mode change detection means B5 (ST16), the change is made before the mode change. When the mode is returned to the automatic mode or the automatic operation (ST17), the change is compared with the predetermined time and the time after the previous change, and if it is less than that time (ST18), the previous mode change is performed. Since the correction of the threshold value is unnecessary for the user even if it is wrong or unnecessary, the previous correction value is canceled (ST19).

  As described above, the air conditioner according to the present invention can be operated in an operation mode suitable for the user's preference, and can be applied to various air conditioners regardless of home use or business use.

DESCRIPTION OF SYMBOLS 1 Indoor unit 2 Outdoor unit 3 Indoor suction temperature detection means 4 Indoor heat exchanger 5 Indoor heat exchanger temperature sensor 6 Indoor air blower device 7 Outdoor suction temperature detection means 8 Outdoor heat exchanger 9 Outdoor heat exchanger temperature sensor 10 Outdoor Blower 11 Compressor 12 Throttle mechanism 13 Four-way valve B4 Operation mode determination means B5 Manual mode change detection means B6 Temperature storage means

Claims (3)

An indoor unit and an outdoor unit, an indoor suction temperature detecting means for detecting the suction temperature of the indoor unit, an outdoor suction temperature detecting means for detecting the suction temperature of the outdoor unit, a set temperature in the room, Temperature storage means for storing the indoor temperature and outdoor suction temperature, the indoor suction temperature detected by the indoor suction temperature detection means, the outdoor suction temperature detected by the outdoor suction temperature detection means, and the temperature storage means Operation mode determination means for determining cooling / dehumidification or heating in automatic operation from the set temperature, and that the operation mode has been manually changed by the user during operation in the mode determined by the operation mode determination means. Manual mode change detection means for detecting the operation mode from the cooling system to the heating or If it is changed to the reverse manually, air conditioner, wherein said indoor suction temperature at that time, and the outdoor suction temperature, to correct the threshold value of the driving mode determination than the indoor set temperature. 2. The air conditioner according to claim 1, wherein the threshold value for determining the operation mode is not corrected when a certain period of time has elapsed since the start of operation. The air conditioner according to claim 1 or 2, wherein when the operation mode is returned to the mode before the change or the automatic mode within a predetermined time, the correction of the threshold for determining the operation mode is canceled.

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