JP2006118732A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner capable of conditioning air on the basis of a remote controller set temperature desired by a user and an indoor required load, even if an energy saving mode is set, and providing an energy saving effect. <P>SOLUTION: As the air conditioner is controlled in such a manner that a differential temperature between an indoor suction temperature detection value of an air conditioner indoor unit and the remote controller set temperature is operated, the energy saving mode is executed (S15) when a state that an operated value is less than a prescribed set value is continued for more than a prescribed time (S13, S14), and normal operation is recovered when the operated value is over the prescribed set value (S13), thus both of air conditioning based on the required load and an energy saving effect can be achieved. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an air conditioner that enters an energy saving mode from an energy saving setting from a remote controller and a difference between an indoor suction temperature and a remote control temperature to obtain an energy saving effect.

  The conventional air conditioner energy saving method is to switch between normal mode and energy saving mode with SW, and input the outside air temperature and the standard outside air temperature uniquely determined in the energy saving mode, and set the temperature from these deviations. (For example, refer to Patent Document 1).

FIG. 7 is a flowchart showing connection abnormality control of the conventional air conditioner described in Patent Document 1. As shown in the flowchart of FIG. 7, the energy saving mode determination unit 101, the temperature setting unit 102, the outside air temperature input unit 103, the operation mode determination unit 104, and the uniquely determined outside air temperature and the current outside air temperature are compared. The cooling time comparison means 106, the heating time comparison means 110, the cooling time temperature setting means 105 that uniquely determines the outside air temperature -5K from the outside air temperature, the heating time temperature setting means 109 that is determined as the outside air temperature + 5K, and the cooling time comparison means. A means 108 for determining the temperature setting when it is determined that the temperature is higher than the outside air temperature uniquely determined in 106 and a temperature setting for when it is determined that the temperature setting is lower than the outside air temperature uniquely determined by the heating comparison means 110 are determined. It is comprised from the means 111 and the compressor control 113 according to preset temperature, and the rush of energy-saving mode is performed by SW, and at the time of energy-saving mode, And it determines the set temperature of outside air temperature of standing as an input.
JP-A-6-74519

  However, in the conventional configuration, the set temperature is determined from the current outside air temperature state based on a uniquely defined outside air temperature threshold regardless of the set temperature desired by the user and the indoor load state. During cooling operations with a low outdoor temperature and a large indoor load, and heating operations with a high outdoor temperature and a large indoor load, there is a problem that the desired set temperature is not reached and air conditioning according to the required load cannot be achieved. Was.

  The present invention solves the above-described conventional problems, and even when the energy saving mode is set, an air conditioner that can perform air conditioning according to a remote controller set temperature and a required indoor load desired by a user and has an energy saving effect. The purpose is to provide.

  In order to solve the conventional problems, an air conditioner of the present invention includes a variable capacity compressor, an outdoor heat exchanger, an outdoor fan, an outdoor unit having an electric expansion valve, an indoor heat exchanger, and an indoor fan. In an air conditioner that is connected to an indoor unit and is operated by a remote control operation having an energy saving setting SW, a required load is determined based on a temperature difference between the indoor suction temperature and the remote control set temperature, and the operating frequency of the compressor is determined. Energy saving monitoring is started by the energy saving setting SW operation on the remote control, and the energy saving mode is entered by the difference between the indoor suction temperature and the remote control setting temperature being kept below a predetermined set value for a predetermined time or more. The energy saving is performed by lowering the required load and lowering the compressor operating frequency.

As a result, at the time of energy saving setting, it is possible to enter the energy saving mode by judging whether the air conditioning condition in the room is air conditioning according to the remote controller set temperature desired by the user and the indoor required load, and reduce the required load. Energy saving effect can be brought about by lowering the compressor operating frequency.

  The air conditioner of the present invention has means for detecting a condensation temperature during cooling operation with a temperature sensor that detects a heat exchanger attached to the outdoor heat exchanger, and the energy saving setting SW in the remote control during the cooling operation. Energy saving monitoring is started by operation, and when the temperature difference between the indoor suction temperature and the remote control set temperature continues below a predetermined set value for a predetermined time or more, the energy saving mode is entered, and the rotational speed control of the outdoor fan is normally performed. It is characterized by having a control means for making the target condensing temperature constant with the condensing temperature as an input independent of the cooling operation.

  As a result, at the time of energy saving setting, it is possible to enter the energy saving mode by judging whether the air conditioning condition in the room is air conditioning according to the remote controller set temperature desired by the user and the indoor required load, and reduce the required load. An energy saving effect can be brought about by lowering the compressor operating frequency and lowering the condensation temperature of the refrigeration cycle as a control independent of the outdoor fan control during normal operation.

  The air conditioner of the present invention can enter the energy saving mode by judging whether the air conditioning condition in the room can be adjusted according to the remote controller set temperature desired by the user or the indoor required load at the time of energy saving setting. Can bring.

  1st invention connects a capacity variable type compressor, an outdoor heat exchanger, an outdoor fan, an outdoor unit having an electric expansion valve, an indoor unit having an indoor heat exchanger and an indoor fan, and has an energy saving setting SW. In an air conditioner that is operated by remote control operation, the air conditioner has means for determining a required load based on a difference between an indoor suction temperature and a remote control set temperature and determining an operation frequency of the compressor, and the energy saving setting SW in the remote control Energy saving monitoring is started by operation, and when the temperature difference between the indoor suction temperature and the remote control set temperature continues for a predetermined time or less for a predetermined time or more, the energy saving mode is entered and the required load is reduced to operate the compressor. By reducing the frequency, whether the indoor air conditioning is in accordance with the remote controller set temperature desired by the user and the indoor required load during energy saving settings for cooling operation Determined to be plunged into the energy saving mode, it is possible to bring the energy saving effect in lowering the compressor operating frequency decreases the required load.

  The second invention connects an outdoor unit having a variable capacity compressor, an outdoor heat exchanger, an outdoor fan, and an electric expansion valve, an indoor unit having an indoor heat exchanger and an indoor fan, and has an energy saving setting SW. An air conditioner that is operated by a remote control operation has means for determining a required load and determining an operation frequency of the compressor based on a temperature difference between the remote control set temperature and the indoor suction temperature during heating operation. Energy saving monitoring is started by the energy saving setting SW operation, and when the temperature difference between the remote control set temperature and the room intake temperature continues below a predetermined set value for a predetermined time or more, the energy saving mode is entered and the required load is reduced. By reducing the compressor operating frequency, the indoor air conditioning condition can be adjusted according to the remote controller set temperature desired by the user and the indoor required load during energy saving settings for heating operation. Whether it is possible to rush to the energy-saving mode decision may result in energy savings by reducing the load requirement decreases the compressor operation frequency.

3rd invention has a means to detect the condensation temperature during cooling operation with the temperature sensor which detects the heat exchanger with which the said outdoor heat exchanger was mounted | worn, and is energy-saving by the energy-saving setting SW operation in the said remote control during the said cooling operation Start monitoring and enter the energy saving mode when the difference between the indoor suction temperature and the remote control set temperature continues below the set value for a specified time or more, and control the rotation speed of the outdoor fan for normal cooling operation. Independent of the inside, it has a control means that keeps the target condensation temperature constant with the condensation temperature as an input. It is possible to enter into the energy saving mode by determining whether air conditioning according to the air condition can be performed, lowering the required load and lowering the compressor operating frequency, and further controlling the outdoor fan control during normal operation. Condensation temperature of the refrigeration cycle as the control can result in energy savings by reducing the.

  4th invention has a means to detect the evaporation temperature during heating operation with the temperature sensor which detects the heat exchanger with which the said outdoor heat exchanger was mounted | worn, and it is energy-saving by energy-saving setting SW operation in the said remote control during the said heating operation Start monitoring and enter the energy saving mode by maintaining the difference between the remote controller set temperature and the indoor suction temperature below the preset value for a preset time, and control the rotational speed of the outdoor fan in the normal heating operation. By having control means that makes the target evaporation temperature constant with the evaporation temperature as an input independent of the inside, the indoor air-conditioning state can be set to the remote control set temperature and the required indoor load that the user desires when setting energy saving for heating operation. It is possible to enter into the energy saving mode by determining whether air conditioning according to the air condition can be performed, lowering the required load and lowering the compressor operating frequency, and further controlling the outdoor fan control during normal operation. It can result in energy savings by reducing the evaporation capacity of the refrigeration cycle as the control.

  5th invention has a means to detect the evaporating temperature during air_conditionaing | cooling operation with the temperature sensor which detects the heat exchanger with which the said indoor heat exchanger was mounted | worn, and is energy-saving by the energy saving setting SW operation in the said remote control during the air_conditioning | cooling operation Start monitoring and enter the energy saving mode when the difference between the indoor suction temperature and the remote control set temperature continues below the predetermined set value for a predetermined time or longer. Independently from the above, there is a control unit that keeps the target evaporation temperature constant with the evaporation temperature as an input. It is possible to enter the energy saving mode by judging whether the air conditioning is appropriate, reducing the required load and reducing the compressor operating frequency, and the outdoor fan control is independent from normal operation Reduced the condensation temperature of the refrigeration cycle as a control, it is possible to bring the energy saving effect by decreasing the evaporating ability as further independent control to the normal control of engine speed indoor fan speed control.

6th invention has a means to detect the condensation temperature during heating operation with the temperature sensor which detects the heat exchanger with which the said indoor heat exchanger was mounted | worn, and it saves energy by energy-saving setting SW operation in the said remote control during the said heating operation Monitoring is started, and when the temperature difference between the remote control set temperature and the room intake temperature continues below a predetermined set value for a predetermined time or longer, the energy saving mode is entered. Independently, the control means that keeps the target condensing temperature constant with the condensing temperature as an input makes it possible to set the air conditioning condition in the room to the remote control set temperature and the indoor required load desired by the user during energy saving settings for heating operation. It is possible to enter the energy saving mode by judging whether the air conditioning is appropriate, reducing the required load and reducing the compressor operating frequency, and controlling the outdoor fan control during normal operation Reduced the evaporation capacity of the refrigeration cycle as a control, it is possible to bring the energy saving effect by Ruru lowers the condensation temperature as an independent control and further normal rotation speed control indoor fan speed control.
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)
FIG. 1 is a diagram showing a flowchart of the air conditioner according to the first embodiment of the present invention. In FIG. 1, the compressor operating frequency determination 17 based on the required load of the cooling operation 10 is a required load determining means for determining from the difference between the suction temperature and the remote controller set temperature when the energy saving setting 12 by the remote controller operation is not performed. 11. When the required load is determined from 11 and the energy saving setting 12 is set, the energy saving rush load determination 13 and the energy saving rush load determination 13 continue to enter the energy saving mode 15 from the duration determination 14 and are requested by the energy saving mode required load determining means 16. The load is determined and input to the compressor operating frequency determination 17.

  The operation and action of the air conditioner will be described with reference to FIG.

  In the cooling operation 10, when the remote controller energy saving setting 12 is not performed, the compressor operating frequency 17 determines the required load from the required load determining means 11 based on the difference between the indoor suction temperature and the remote controller set temperature. decide.

  When the remote control energy saving setting 12 is set by the user's intention, the energy saving inrush load determination 13 determines whether the difference between the indoor suction temperature and the remote controller set temperature is 1K or less, and the energy saving inrush load determination Whether or not 13 has continued for 30 minutes or more is determined by duration determination 14, and the energy saving mode 15 is entered.

  When entering the energy saving mode 15, the indoor required load that is input to the compressor operating frequency determination 17 is Δ0.5K from the difference between the indoor suction temperature calculated by the normal required load determining means and the set temperature of the remote controller. The operating frequency of the compressor is determined using the value of the energy saving required load determining means 16 as the subtracted required load.

  Based on the above, at the time of energy-saving setting for cooling operation, it is determined whether the air-conditioning condition in the room is continuously air-conditioning according to the user-set remote control temperature or the required indoor load. If the required load, that is, the temperature difference between the suction temperature and the remote control set temperature exceeds 1K, the normal load according to the required load is obtained. By determining the compressor operating frequency, it is possible to perform a cooling operation that achieves both air conditioning and energy saving effect according to the required load.

(Embodiment 2)
FIG. 2 is a diagram showing a flowchart of air direction control of the air conditioner according to the second embodiment of the present invention. In FIG. 2, the same components as those in FIG.

  The compressor operating frequency determination 27 based on the required load of the heating operation 20 is performed from the required load determining means 21 that determines from the temperature difference between the remote controller set temperature and the suction temperature when the energy saving setting 12 by remote control operation is not performed. When the energy saving setting 12 is made, the energy saving mode 25 is entered from the energy saving inrush load determination 23 and the duration determination 24 of the energy saving inrush load determination 23, and the required load is determined by the energy saving mode required load determining means 26. The compressor operating frequency determination 27 is used as an input.

  About the air conditioner comprised as mentioned above, the operation | movement and an effect | action are demonstrated below from FIG.

  In the heating operation 20, when the energy saving setting 12 of the remote control is not normally performed, the operating frequency 27 of the compressor determines the required load from the required load determining means 21 based on the difference between the set temperature of the indoor remote control and the suction temperature. decide.

  When the remote control energy saving setting 12 is set by the user's intention, the energy saving inrush load determination 23 determines whether the temperature difference between the set temperature of the indoor remote control and the suction temperature is 1K or less, and the energy saving inrush load determination Whether or not 23 continues for 30 minutes or more is determined by the duration determination 24, and the energy saving mode 25 is entered. When the energy saving mode 25 is entered, the indoor required load that is input to the compressor operating frequency determination 27 is Δ0.5K from the difference between the indoor suction temperature calculated by the normal required load determination means and the set temperature of the remote controller. The operating frequency of the compressor is determined using the value of the energy saving required load determining means 26 as the subtracted required load.

  Based on the above, at the time of energy-saving setting for heating operation, the indoor air-conditioning state is determined based on whether the air-conditioning according to the remote controller set temperature desired by the user and the indoor required load is continuously performed or not. When the required load, that is, the temperature difference between the remote control set temperature and the suction temperature exceeds 1K, the normal load according to the required load is obtained. By determining the compressor operating frequency, it is possible to perform a heating operation that provides both air conditioning and energy saving effect according to the required load.

(Embodiment 3)
FIG. 3 is a diagram showing a flowchart of the air direction control of the air conditioner according to the third embodiment of the present invention. In FIG. 3, the same components as those in FIG.

  The compressor operation frequency determination 17 based on the required load of the cooling operation 10 enters the energy saving mode 15 from the energy saving rush load determination 13 and the duration determination 14 of the energy saving rush load determination 13 when the energy saving setting 12 is performed. Then, the required load is determined by the energy saving mode required load determining means 16 and used as the input of the compressor operating frequency determination 17.

  In addition, when the energy saving mode 15 is entered, the outdoor fan target using the condensation temperature detected by the outdoor heat exchanger temperature detection means 32 independent of the normal outdoor fan control 31 and the target condensation temperature setting 33 in the energy saving mode as inputs. The condensing temperature constant control 34 is performed.

  About the air conditioner comprised as mentioned above, the operation | movement and an effect | action are demonstrated below from FIG.

  In the cooling operation 10, when the remote controller energy saving setting 12 is not performed, the compressor operating frequency 17 determines the required load from the required load determining means 11 based on the difference between the indoor suction temperature and the remote controller set temperature. The outdoor fan is normally controlled. When the remote control energy saving setting 12 is set by the user's intention, the energy saving inrush load determination 13 determines whether the difference between the indoor suction temperature and the remote controller set temperature is 1K or less, and the energy saving inrush load determination Whether or not 13 has continued for 30 minutes or more is determined by duration determination 14, and the energy saving mode 15 is entered.

  When entering the energy saving mode 15, the indoor required load that is input to the compressor operating frequency determination 17 is Δ0.5K from the difference between the indoor suction temperature calculated by the normal required load determining means and the set temperature of the remote controller. The operating frequency of the compressor is determined using the value of the energy saving required load determining means 16 as the subtracted required load.

  Further, in the outdoor fan control, the outdoor fan target condensing temperature constant control 34 independent of the normal outdoor fan normal control, near the lower limit value of the condensing temperature detected by the outdoor heat exchanger temperature detecting means 32 and the allowable condensing temperature of the compressor. The rotational speed of the outdoor fan is controlled so that the condensing temperature of the refrigeration cycle is constant with the target condensing temperature setting 33 set in the energy saving mode as an input.

  Based on the above, at the time of energy-saving setting for cooling operation, it is determined whether the air-conditioning condition in the room is continuously air-conditioning according to the user-set remote control temperature or the required indoor load. By rushing in, reducing the required load to reduce the compressor operating frequency, and reducing the condensing temperature of the refrigeration cycle to reduce the power consumption of the compressor, an energy saving effect is obtained, and the required load, that is, the suction temperature and the remote control If the temperature difference between the set temperatures exceeds 1K, the air conditioning and energy-saving effect according to the required load are achieved by performing normal compressor operation frequency determination according to the required load and normal outdoor fan control. You can drive.

(Embodiment 4)
FIG. 4 is a view showing a flowchart of the air direction control of the air conditioner according to the fourth embodiment of the present invention. 4, the same components as those in FIG. 2 are denoted by the same reference numerals, and the description thereof is omitted.

  The compressor operating frequency determination 27 based on the required load of the heating operation 20 enters the energy saving mode 25 from the energy saving inrush load determination 23 and the duration determination 24 of the energy saving inrush load determination 23 when the energy saving setting 12 is performed. Then, the required load is determined by the energy saving mode required load determining means 26 and used as the input of the compressor operating frequency determination 27.

  When the energy saving mode 15 is entered, the outdoor fan target having the evaporating temperature detected by the outdoor heat exchanger temperature detecting means 42 independent of the normal outdoor fan control 41 and the target evaporating temperature setting 43 in the energy saving mode as inputs. The condensing temperature constant control 44 is performed.

  About the air conditioner comprised as mentioned above, the operation | movement and an effect | action are demonstrated below from FIG.

  In the heating operation 20, when the energy saving setting 12 of the remote control is not normally performed, the operating frequency 27 of the compressor determines the required load from the required load determining means 21 based on the difference between the set temperature of the indoor remote control and the suction temperature. The outdoor fan is normally controlled.

  When the energy saving setting 12 of the remote control is set by the user's intention, the energy saving inrush load determination 23 determines whether the temperature difference between the set temperature of the indoor remote control and the suction temperature is 1K or less, and the energy saving inrush load determination Whether or not 23 continues for 30 minutes or more is determined by the duration determination 24, and the energy saving mode 25 is entered.

  When the energy saving mode 25 is entered, the indoor required load that is input to the compressor operating frequency determination 27 is Δ0.5K from the difference between the indoor suction temperature calculated by the normal required load determination means and the set temperature of the remote controller. The operating frequency of the compressor is determined using the value of the energy saving required load determining means 26 as the subtracted required load. In addition, the outdoor fan control is a difference between the evaporation temperature detected by the outdoor heat exchanger temperature detecting means 42 and the difference between the target evaporation temperature and the outside air temperature, which is independent of the normal outdoor fan normal control. With the energy saving mode target evaporation temperature setting 43 set so as to be low, the rotational speed of the outdoor fan is controlled so that the evaporation temperature of the refrigeration cycle is constant.

  Based on the above, at the time of energy-saving setting for heating operation, the indoor air-conditioning state is determined based on whether the air-conditioning according to the remote controller set temperature desired by the user and the indoor required load is continuously performed or not. By rushing in, reducing the required load to reduce the compressor operating frequency, and reducing the heat supply amount of the refrigeration cycle to reduce the power consumption of the compressor, the energy saving effect is obtained, and the required load, that is, the remote control set temperature and suction If the temperature differential temperature exceeds 1K, it is possible to perform a heating operation that achieves both air conditioning and energy saving effect according to the required load by determining the normal compressor operating frequency according to the required load. .

(Embodiment 5)
FIG. 5 is a view showing a flowchart of the air direction control of the air conditioner in the fifth embodiment of the present invention. 5, the same components as those in FIGS. 1 and 3 are denoted by the same reference numerals, and the description thereof is omitted.

The compressor operation frequency determination 17 based on the required load of the cooling operation 10 enters the energy saving mode 15 from the energy saving inrush load determination 13 and the energy saving inrush load determination 13 duration determination 14 when the energy saving setting 12 is performed. Then, the required load is determined by the energy saving mode required load determining means 16 and used as the input of the compressor operating frequency determination 17.

  When the energy saving mode 15 is entered, the outdoor fan target having the condensation temperature detected by the outdoor heat exchanger temperature detection means 32 independent of the normal outdoor fan control 31 and the target condensation temperature setting 33 in the energy saving mode as inputs. The constant condensation temperature control 34 is performed, and the indoor fan inputs the evaporation temperature detected by the indoor heat exchanger temperature detecting means 51 independent of the normal indoor fan normal remote controller setting control 50 and the indoor target evaporation temperature setting 52 in the energy saving mode. The indoor fan target evaporation temperature constant control 53 is performed.

  About the air conditioner comprised as mentioned above, the operation | movement and an effect | action are demonstrated below from FIG.

  In the cooling operation 10, when the remote controller energy saving setting 12 is not performed, the compressor operating frequency 17 determines the required load from the required load determining means 11 based on the difference between the indoor suction temperature and the remote controller set temperature. The outdoor fan is normally controlled.

  When the remote control energy saving setting 12 is set by the user's intention, the energy saving inrush load determination 13 determines whether the difference between the indoor suction temperature and the remote controller set temperature is 1K or less, and the energy saving inrush load determination Whether or not 13 has continued for 30 minutes or more is determined by duration determination 14, and the energy saving mode 15 is entered.

  When entering the energy saving mode 15, the indoor required load that is input to the compressor operating frequency determination 17 is Δ0.5K from the difference between the indoor suction temperature calculated by the normal required load determining means and the set temperature of the remote controller. The operating frequency of the compressor is determined using the value of the energy saving required load determining means 16 as the subtracted required load.

  Further, in the outdoor fan control, the outdoor fan target condensing temperature constant control 34 independent of the normal outdoor fan normal control, near the lower limit value of the condensing temperature detected by the outdoor heat exchanger temperature detecting means 32 and the allowable condensing temperature of the compressor. The rotational speed of the outdoor fan is controlled so that the condensing temperature of the refrigeration cycle is constant with the target condensing temperature setting 33 set in the energy saving mode as input.

  In addition, the indoor fan control is performed by using the indoor fan target evaporation temperature constant control 53 independent of the normal indoor fan normal remote controller setting control 50, the evaporation temperature detected by the indoor heat exchanger temperature detection means 51, the target evaporation temperature, and the indoor suction temperature. The indoor fan target evaporating temperature constant control 53 is performed with the indoor target evaporating temperature setting 52 set in such an energy saving mode that is set so that the temperature difference from the temperature becomes lower.

  Based on the above, at the time of energy-saving setting for cooling operation, it is determined whether the air-conditioning condition in the room is continuously air-conditioning according to the user-set remote control temperature or the required indoor load. Entering, reducing the required load to reduce the compressor operating frequency, reducing the condensation temperature of the refrigeration cycle, increasing the evaporation temperature and reducing the power consumption of the compressor to obtain an energy saving effect, If the required load, that is, the differential temperature between the suction temperature and the remote controller set temperature exceeds 1K, the air conditioning and energy saving according to the required load are performed by determining the normal compressor operating frequency according to the required load and controlling the normal outdoor fan. Cooling operation that brings about both effects can be performed.

(Embodiment 6)
FIG. 6 is a view showing a flowchart of the air direction control of the air conditioner according to the sixth embodiment of the present invention. 6, the same components as those in FIGS. 2 and 4 are denoted by the same reference numerals, and the description thereof is omitted.

  The compressor operating frequency determination 27 based on the required load of the heating operation 20 enters the energy saving mode 25 from the energy saving inrush load determination 23 and the duration determination 24 of the energy saving inrush load determination 23 when the energy saving setting 12 is performed. Then, the required load is determined by the energy saving mode required load determining means 26 and used as the input of the compressor operating frequency determination 27.

  When the energy saving mode 15 is entered, the outdoor fan target having the evaporating temperature detected by the outdoor heat exchanger temperature detecting means 42 independent of the normal outdoor fan control 41 and the target evaporating temperature setting 43 in the energy saving mode as inputs. The condensing temperature constant control 44 is performed, and the indoor fan inputs the condensing temperature detected by the indoor heat exchanger temperature detecting means 61 independent of the normal indoor fan normal remote controller setting control 60 and the indoor target condensing temperature setting 62 in the energy saving mode. The indoor fan target evaporation temperature constant control 63 is performed.

  About the air conditioner comprised as mentioned above, the operation | movement and an effect | action are demonstrated below from FIG.

  In the heating operation 20, when the energy saving setting 12 of the remote control is not normally performed, the operating frequency 27 of the compressor determines the required load from the required load determining means 21 based on the difference between the set temperature of the indoor remote control and the suction temperature. The outdoor fan is normally controlled.

  When the energy saving setting 12 of the remote control is set by the user's intention, the energy saving inrush load determination 23 determines whether the temperature difference between the set temperature of the indoor remote control and the suction temperature is 1K or less, and the energy saving inrush load determination Whether or not 23 continues for 30 minutes or more is determined by the duration determination 24, and the energy saving mode 25 is entered.

  When the energy saving mode 25 is entered, the indoor required load that is input to the compressor operating frequency determination 27 is Δ0.5K from the difference between the indoor suction temperature calculated by the normal required load determination means and the set temperature of the remote controller. The operating frequency of the compressor is determined using the value of the energy saving required load determining means 26 as the subtracted required load.

  In addition, the outdoor fan control is a difference between the evaporation temperature detected by the outdoor heat exchanger temperature detecting means 42 and the difference between the target evaporation temperature and the outside air temperature, which is independent of the normal outdoor fan normal control. With the energy saving mode target evaporation temperature setting 43 set so as to be low, the rotational speed of the outdoor fan is controlled so that the evaporation temperature of the refrigeration cycle is constant.

  In addition, the indoor fan control is performed by using the indoor fan target condensation temperature constant control 63 independent of the normal indoor fan normal remote controller setting control 50, the condensation temperature detected by the indoor heat exchanger temperature detection means 61, the target condensation temperature, and the indoor suction temperature. The indoor fan target condensing temperature constant control 63 is performed with the indoor target condensing temperature setting 62 set in such an energy saving mode that is set so that the temperature difference is lower.

  Based on the above, at the time of energy-saving setting for heating operation, the indoor air-conditioning state is determined based on whether the air-conditioning according to the remote controller set temperature desired by the user and the indoor required load is continuously performed or not. By rushing in, reducing the required load and lowering the compressor operating frequency, increasing the evaporation temperature of the refrigeration cycle, lowering the condensation temperature and reducing the power consumption of the compressor to obtain an energy saving effect, If the required load, that is, the temperature difference between the remote control set temperature and the suction temperature exceeds 1K, the normal compressor operating frequency is determined according to the required load, thereby achieving both air conditioning and energy saving effect according to the required load. You can do heating operation.

As described above, the air conditioner according to the present invention can enter the energy saving mode with the temperature difference between the set temperature of the remote control and the suction temperature and the duration of the low required load. It can also be applied to other uses.

The flowchart of the air conditioner in Embodiment 1 of this invention Flowchart of the air conditioner in Embodiment 2 of the present invention Flowchart of the air conditioner in Embodiment 3 of the present invention Flowchart of the air conditioner in Embodiment 4 of the present invention Flowchart of the air conditioner in Embodiment 5 of the present invention Flowchart of the air conditioner in Embodiment 6 of the present invention Conventional air conditioner flowchart

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Required load determination means 12 Remote control energy saving setting 13 Energy saving inrush load determination 14 Duration determination 15 Energy saving mode 16 Energy saving mode required load determination means 17 Compressor frequency determination based on required load 31 Outdoor fan normal control 32 Outdoor heat exchanger temperature detection means 33 Target condensation temperature setting in energy saving mode 34 Outdoor fan target condensation temperature constant control 43 Target evaporation temperature setting in energy saving mode 44 Outdoor fan target evaporation temperature constant control 51 Indoor heat exchange temperature detection means 52 Indoor target evaporation temperature setting in energy saving mode 53 Indoor fan Target evaporation temperature constant control 62 Indoor target condensation temperature setting in energy saving mode 63 Indoor fan target condensation temperature constant control

Claims (6)

A variable capacity compressor, an outdoor heat exchanger, an outdoor fan, an outdoor unit having an electric expansion valve, and an indoor unit having an indoor heat exchanger and an indoor fan are connected and operated by remote control operation having an energy saving setting SW. The air conditioner has means for determining the required load based on the difference between the indoor suction temperature during cooling operation and the remote control set temperature and determining the operating frequency of the compressor. Start monitoring, enter the energy saving mode by continuing the difference between the indoor suction temperature and the remote control set temperature below the preset value for a preset time, and reduce the required load to reduce the compressor operating frequency An air conditioner that features energy savings. A variable capacity compressor, an outdoor heat exchanger, an outdoor fan, an outdoor unit having an electric expansion valve, and an indoor unit having an indoor heat exchanger and an indoor fan are connected and operated by remote control operation having an energy saving setting SW. The air conditioner has means for determining a required load based on a difference between a remote control set temperature and an indoor suction temperature during heating operation and determining an operation frequency of the compressor. Start monitoring, enter the energy saving mode by continuing the difference between the remote controller set temperature and the indoor suction temperature below the preset value for a preset time, and reduce the required load to reduce the compressor operating frequency An air conditioner that features energy savings. Means for detecting the condensation temperature during cooling operation with a temperature sensor for detecting a heat exchanger mounted on the outdoor heat exchanger, and during the cooling operation, energy saving monitoring is started by an energy saving setting SW operation on the remote control; When the temperature difference between the suction temperature and the remote control set temperature continues below the preset value for a preset time, the system enters the energy saving mode, and the outdoor fan speed control is performed independently of the normal cooling operation. 2. The air conditioner according to claim 1, further comprising a control unit that makes the target condensing temperature constant with temperature input. Means for detecting an evaporating temperature during heating operation by a temperature sensor for detecting a heat exchanger attached to the outdoor heat exchanger, and starts energy saving monitoring by an energy saving setting SW operation in the remote control during the heating operation; When the temperature difference between the set temperature and the indoor suction temperature continues below a predetermined set value for a predetermined time or more, the energy saving mode is entered, and the rotational speed control of the outdoor fan is controlled independently of the normal heating operation. The air conditioner according to claim 2, further comprising a control unit that makes the target evaporation temperature constant with the temperature as an input. Means for detecting the evaporating temperature during cooling operation with a temperature sensor for detecting the heat exchanger attached to the indoor heat exchanger, and starts energy saving monitoring by the energy saving setting SW operation in the remote control during the cooling operation, When the temperature difference between the suction temperature and the remote controller set temperature continues below a predetermined set value for a predetermined time or more, the system enters the energy saving mode and controls the rotation speed of the indoor fan independently of the set air volume of the remote controller. The air conditioner according to claim 1 or 3, further comprising a control unit that inputs a constant target evaporation temperature. Means for detecting a condensing temperature during heating operation with a temperature sensor for detecting a heat exchanger attached to the indoor heat exchanger, and starts energy saving monitoring by an energy saving setting SW operation in the remote control during the heating operation; When the temperature difference between the set temperature and the indoor suction temperature continues below the predetermined set value for a predetermined time or more, the system enters the energy saving mode, and the rotation speed control of the indoor fan is performed independently of the set air volume of the remote controller. 5. The air conditioner according to claim 2, further comprising a control unit that makes the target condensing temperature constant as input.

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