JP5244411B2 - Energy saving operation method of air conditioner and air conditioner - Google Patents

Description

  The present invention relates to an energy-saving operation method for an air conditioner and an air conditioner that can set the set temperature to a predetermined energy-saving set temperature by operating an energy-saving button and operate the air conditioner in an energy-saving mode. is there.

  The air conditioner is generally controlled to operate so that the room temperature becomes a set temperature. In such an air-conditioning operation, in order to make the room a more comfortable air-conditioning environment, control is performed in consideration of various temperature control elements. For example, in addition to the room temperature, a sensor that detects the humidity of the room, the temperature of the outside air, the wall surface temperature of the room, etc. is provided, and the room temperature setting value is corrected by various methods and formulas based on those detected values. Patent Documents 1 and 2 disclose an air conditioner that controls the compressor, the indoor fan, or the expansion valve by obtaining the compressor rotational speed, the indoor fan rotational speed, the expansion valve opening degree, or the like from the difference between the correction value and the room temperature. It is shown.

According to these, a more comfortable air-conditioning environment can be formed. However, the above-described operation control is only for forming a comfortable air-conditioning environment, and cannot realize energy-saving operation. Therefore, in order to realize the energy saving operation, it is necessary for the user to set the set temperature higher during cooling and lower the set temperature during heating.
Therefore, in recent air conditioners, in order to reduce CO2 emissions, in addition to improving the energy saving performance by improving the efficiency and performance of the air conditioner itself, so that energy saving operation can be performed easily, An energy-saving button (eco button) is provided on the remote control, etc., and the set temperature is set to a predetermined energy-saving temperature (for example, 28 ° C. for cooling and 20 ° C. for heating) only by operating the button for normal air-conditioning operation. On the other hand, an air conditioner that can realize energy saving operation is provided.

JP-A-7-260230 JP-A-9-152165

  By the way, in an air conditioner with an energy saving button (eco button) as described above, the set temperature is set higher during cooling and lower during heating. The number of rotations is suppressed, and appropriate energy saving operation can be realized. However, as it is, it is merely an increase in the set temperature or a lower setting compared to normal air-conditioning operation, so it is unavoidable as an energy-saving operation, and further ingenuity is required. It is in.

  The present invention has been made in view of the above circumstances, and is an air conditioner that can be operated in an energy saving mode by changing a set temperature by operating an energy saving button. An object is to provide an air conditioner energy saving operation method and an air conditioner that can be realized.

In order to solve the above problems, the air conditioner energy saving operation method and the air conditioner of the present invention employ the following means.
That is, the energy-saving operation method of the air conditioner according to the present invention sets the set temperature to a predetermined energy-saving set temperature by operating the energy-saving button, and the energy-saving operation of the air conditioner that operates the air conditioner in the energy-saving mode. in the method, during operation in the energy saving mode, the indoor humidity detected by the humidity sensor, have rows further operation of high energy saving by correcting the energy saving set temperature according to the detected humidity, further, the energy saving The number of rotations of the indoor fan is controlled in accordance with the correction of the set temperature .

According to the present invention, when operating in the energy-saving mode in which the set temperature is set to a predetermined energy-saving set temperature by operating the energy-saving button, the indoor humidity is detected by the humidity sensor, and the detected humidity is determined according to the detected humidity. There rows further operation of high energy saving by correcting the energy saving setting temperature Te, further, because you have to control the rotational speed of the indoor fan in accordance with the correction of the energy saving setting temperature, only the operation of the energy saving key, The energy saving set temperature is corrected in accordance with the humidity in the room, and the operation with higher energy saving (power saving operation in which the rotation speed of the compressor is suppressed) can be easily selected by the user's intention. As a result, it is possible to realize a higher energy-saving operation in consideration of the environment with a single button while maintaining the same sensible temperature and keeping comfort. In addition, the sensory temperature can be further lowered by increasing the rotational speed of the indoor fan during cooling and increasing the wind speed that affects the sensory temperature in accordance with the correction of the energy saving set temperature. The increase in power due to the increase in the indoor fan rotation speed is smaller than the power saving effect due to the suppression of the rotation speed of the compressor, so that the energy-saving operation can be realized with the sensory temperature equal to or higher.

  Furthermore, the energy-saving operation method for an air conditioner according to the present invention is the above-described energy-saving operation method for an air conditioner, wherein, when the detected humidity drops below a predetermined humidity during cooling, the energy-saving operation during cooling according to the humidity. Correction is made to increase the set temperature, and when the detected humidity rises above a predetermined humidity during heating, correction is made to decrease the energy saving set temperature during heating according to the humidity.

  According to the present invention, when the detected humidity drops below a predetermined humidity during cooling, correction is made to increase the energy saving set temperature during cooling according to the humidity, and the detected humidity rises above the predetermined humidity during heating. Since the energy-saving setting temperature during heating is corrected to decrease according to the humidity, the energy-saving setting temperature during cooling is taken into account, taking into account the relationship between the actual room temperature and the sensory temperature according to the humidity. It can correct | amend so that it may fall at the time of a raise and heating, and air conditioning can be air-cooled or heated by setting the energy-saving preset temperature after correction | amendment as a target value. As a result, it is possible to realize an energy saving operation (power saving operation in which the number of revolutions of the compressor is suppressed) that is one step higher than the operation in which the energy saving set temperature is fixed to a constant value. In addition, the sensible temperature can be maintained at the same level regardless of the correction of the energy saving set temperature, so that the comfort of air conditioning can be kept.

Furthermore, the air conditioner according to the present invention sets the set temperature to a predetermined energy-saving setting value by operating the energy-saving button, and the air-conditioning apparatus that operates the air-conditioning apparatus in the energy-saving mode includes: during operation, the indoor humidity detected by the humidity sensor, have rows further operation of high energy saving by correcting the energy saving set temperature according to the detected humidity, further, suit the correction of the energy saving setting temperature chamber A controller for controlling the rotational speed of the fan is provided.

According to the present invention, when operating in the energy-saving mode in which the set temperature is set to a predetermined energy-saving set temperature by operating the energy-saving button, the indoor humidity is detected by the humidity sensor, and the detected humidity is determined according to the detected humidity. There rows further operation of high energy saving by correcting the energy saving setting temperature Te, further, due to the provision of a controller for controlling the rotational speed of the indoor fan in accordance with the correction of the energy saving setting temperature, only the operation of the energy saving key Thus, the energy-saving set temperature is corrected in accordance with the humidity in the room, and the operation with higher energy-saving (power-saving operation with the compressor speed suppressed) can be easily selected by the user. As a result, it is possible to realize a higher energy-saving operation considering the environment with a single button while maintaining the same sensible temperature and keeping comfort. Further, in accordance with the correction of the energy saving set temperature, the number of rotations of the indoor fan can be increased at the time of cooling, and the wind speed that affects the sensory temperature can be increased, so that the sensory temperature can be further lowered. In particular, the increase in power due to the increase in the rotational speed of the indoor fan is smaller than the power saving effect due to the suppression of the rotational speed of the compressor, so that the energy-saving operation can be realized with the sensory temperature equal to or higher.

According to the present invention, only by operating the energy-saving button, the energy-saving set temperature is corrected according to the humidity in the room, and the power-saving operation in which the rotational speed of the compressor with higher energy-saving is further suppressed is easily selected by the user's intention. As a result, it is possible to achieve a higher energy-saving operation in consideration of the environment with a single button while maintaining the same sensible temperature and keeping comfort. In addition, the sensory temperature can be further lowered by increasing the rotational speed of the indoor fan during cooling and increasing the wind speed that affects the sensory temperature in accordance with the correction of the energy saving set temperature. In particular, the increase in power due to the increase in the rotational speed of the indoor fan is smaller than the power saving effect due to the suppression of the rotational speed of the compressor, so that the energy-saving operation can be realized with the sensory temperature equal to or higher.

Embodiments according to the present invention will be described below with reference to the drawings.
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
FIG. 1 shows a front view of a wall-mounted air conditioner 1 according to this embodiment, and FIG. 2 shows a longitudinal sectional view thereof. In addition, in this embodiment, although the wall-hanging type air conditioner 1 is illustrated, this invention is not limited to such a wall-hanging type air conditioner 1, but a floor-standing type and a ceiling-suspended type It can be similarly applied to all other types of air conditioners, such as a buried type and a wall-through type.

  The air conditioner 1 includes a housing 4 that includes a base body 2 and a front panel 3 that is attached to the base body 2 so as to cover the front portion of the base body 2 from the top, bottom, left, and right and from the front. On the upper surface of the housing 4, a lattice-like air suction port 5 is opened on substantially the entire surface thereof, and on the front portion of the lower surface, a blowout port 6 for conditioned air into the room is opened over substantially the entire width. . The outlet 6 is divided into a plurality of louvers 7 that are driven by being divided into left and right to change the wind direction in the left and right direction, and the left and right that can change the wind direction in the up and down direction and close the outlet 6. Two upper and lower flaps 8 to be driven are provided. The louver 7 and the flap 8 are configured to be independently driven by four motors (not shown).

  A part of the fan case 9 is integrally formed on the front side of the base body 2, and the air from the air suction port 5 to the air-conditioning air outlet 6 is provided between the fan case 9 and the stabilizer 10 attached to the front side. A flow path 11 is formed. In the air flow path 11, an indoor fan 12 comprising a cross flow fan having an elongated cylindrical impeller that is rotationally driven by a motor is disposed in the horizontal direction. The indoor air is sucked into the housing 4 from the suction port 5 through the indoor fan 12, and after flowing through the air flow path 11, the air is blown out into the room again from the blowout port 6.

  In the upper part of the indoor fan (cross flow fan) 12, a horizontally long air heat exchanger 13 bent in a mountain shape so as to surround the suction side is disposed, and the air circulated by the indoor fan 12. The air is cooled during cooling and heated during heating so that the temperature of the room air can be controlled. Drain pans 14 and 15 that are integrated with the base body 2 and the stabilizer 10 are disposed below the air heat exchanger 13. In addition, a pre-filter 16 that removes relatively large dust in the air is installed in the air flow path 11 between the air suction port 5 and the air heat exchanger 13, and various types of filters are disposed on the downstream side. The air purifying filter 17 is installed.

  A controller 18 on the indoor side is built in the right side portion of the housing 4, and an operation signal from the remote controller 20 shown in FIGS. 3A and 3B is received by the receiver 19, and air conditioning is performed. It is configured to control the operation of the machine 1. As shown in FIGS. 3A and 3B, the remote controller 20 includes a display unit 21 that displays an operation state, and an eco button (energy saving button) 22 as one of many operation button groups. Yes.

  The controller 18 includes a control system as shown in FIG. 4 in order to operate the air conditioner 1 in the energy saving mode. In this control system, when the eco button (energy saving button) 22 of the remote controller 20 is operated and an eco driving command (energy saving command) 22A is input, the preset energy saving temperature is set for the room temperature controller 25. An eco-temperature setting unit 26 for setting is provided. The eco-temperature setting unit 26 has a function of correcting the energy-saving set temperature by taking into account the relationship between the actual room temperature and the sensory temperature shown in FIG. 5 according to the detection value from the humidity sensor 27 that detects the humidity in the room. Is provided.

  That is, the eco-temperature setting unit 26 sets the energy-saving set temperature SP to 28 ° C. during cooling, and this energy-saving set temperature SP is shown in FIG. 6 when the detected humidity from the humidity sensor 27 is equal to or lower than a predetermined humidity. As described above, the correction is made to increase in accordance with the detected humidity to obtain the energy saving correction temperature TSECO. Similarly, during heating, the energy saving set temperature SP is set to 20 ° C. When the detected humidity from is equal to or higher than the predetermined humidity, as shown in FIG. 7, it is corrected so as to decrease according to the detected humidity, and is set as the energy saving correction temperature TSECO. The humidity sensor 27 is installed in the vicinity of the air inlet 5 for sucking room air in the housing 4.

  The room temperature control unit 25 determines the difference between the energy saving set temperature SP (energy saving correction temperature TSECO) corrected according to the humidity detected by the humidity sensor 27 and the room temperature detected by the room temperature sensor 28 during operation in the energy saving mode. The load request signal 29 is calculated and output. Then, based on the load request signal 29, the operation frequency of the compressor by the inverter (not shown) is calculated, and the compressor (not shown) is operated at the rotation speed corresponding to the frequency.

Thus, when the eco button (energy saving button) 22 of the remote controller 20 is operated to operate in the energy saving mode, the set temperature is not only set to the energy saving set temperature SP (28 ° C. during cooling, 20 ° C. during heating), Since the set temperature is corrected to the energy saving correction temperature TSECO according to the humidity in the room, the compressor is operated rather than operating with the energy saving set temperature SP fixed at 28 ° C. during cooling and 20 ° C. during heating. It is possible to operate while suppressing the number of rotations by the amount corresponding to the correction temperature, and it is possible to realize operation with higher energy saving performance.
The operation in the energy saving mode can be canceled by pressing the eco button (energy saving button) 22 again.

With the configuration described above, according to the present embodiment, the following operational effects can be obtained.
The air conditioning operation by the air conditioner 1 supplies the air heat exchanger 13 with a low-temperature and low-pressure gas-liquid two-phase refrigerant adiabatically expanded from a refrigeration cycle (not shown), and the indoor air circulated by the refrigerant and the indoor fan 12. The air is cooled and blown out into the room for cooling operation, and the high-temperature and high-pressure hot gas refrigerant is supplied from the refrigeration cycle to the air heat exchanger 12 to exchange heat with the room air. The heating operation can be performed by heating the air and blowing it out into the room.

  Further, the air conditioner 1 is operated in various modes in accordance with operation signals from the remote controller 20 transmitted to the controller 18, and during that time, the compressor rotates so that the indoor temperature or humidity becomes the set temperature or humidity. The number and the number of rotations of the indoor fan 12 are appropriately controlled. Here, when an eco button (energy saving button) 22 provided on the remote controller 20 is operated in order to perform an energy saving operation in consideration of the environment, the eco temperature setting unit 26 of the controller 19 is connected to the room temperature control unit 25. An energy saving set temperature SP (28 ° C. during cooling, 20 ° C. during heating) set in advance as the set temperature is set. As a result, the set temperature is set to 28 ° C., which is the energy saving temperature during cooling, and 20 ° C., which is the energy saving temperature during heating, and the air conditioner 1 is operated in the energy saving mode corresponding to the energy saving set temperature SP. Will be.

  In the present embodiment, during operation in the above-described energy saving mode, in addition to the above, the humidity in the room is detected by the humidity sensor 27, and the energy saving set temperature SP is shown in FIGS. 6 and 7 in accordance with the detected humidity. As shown in the figure, the operation is corrected to the energy saving correction temperature TSECO. In other words, during cooling, when the humidity detected by the humidity sensor 27 is less than or equal to a predetermined humidity taking into account the sensory temperature, the energy saving set temperature SP is further increased from 28 ° C. according to the detected humidity as shown in FIG. In the heating, when the humidity detected by the humidity sensor 27 is equal to or higher than the predetermined humidity in consideration of the sensory temperature, the energy saving set temperature SP is further decreased from 20 ° C. according to the detected humidity as shown in FIG. The energy-saving operation that is one step higher is realized.

  For this reason, only by operating the eco button (energy saving button) 22 provided on the remote controller 20, the energy saving set temperature SP is corrected according to the humidity in the room, and the operation with higher energy saving (reducing the number of rotations of the compressor). Power saving operation) can be easily selected at the user's will. Accordingly, it is possible to realize an energy saving operation (power saving operation in which the number of revolutions of the compressor is suppressed) that is one step higher than the operation in which the energy saving set temperature SP is fixed to a constant value. In addition, the sensible temperature can be maintained at the same level regardless of the correction of the energy saving set temperature, so that the comfort of the air conditioning can be kept as it is.

Further, the rotation speed of the indoor fan 12 may be controlled as well as controlling the rotation speed of the compressor by correcting the energy saving set temperature SP. In this embodiment, since the wind speed by the indoor fan 12 affects the sensible temperature, during cooling, not only the energy saving set temperature SP is corrected to control the rotation speed of the compressor but also the energy saving set temperature SP is adjusted. Thus, the rotational speed of the indoor fan 12 is controlled.

  In this way, the sensory temperature can be further lowered by increasing the rotational speed of the indoor fan 12 during cooling and increasing the speed of the wind that affects the sensory temperature in accordance with the correction of the energy saving set temperature SP. The increase in power due to the increase in the indoor fan rotation speed is smaller than the power saving effect due to the suppression of the rotation speed of the compressor.

In addition, this invention is not limited to the invention concerning the said embodiment, In the range which does not deviate from the summary, it can change suitably. For example, in the said embodiment, although specific temperature is mentioned about energy-saving setting temperature SP and energy-saving correction temperature TSECO, this is only an example and this invention is not limited to this. Needless to say.
In winter, when heating is required, the humidity is generally low, and it is assumed that there are few cases where the energy-saving set temperature SP is corrected to be low and a higher energy-saving operation is performed. In many cases, the present invention is considered to function effectively even during heating.

It is a front view of the air conditioner concerning one embodiment of the present invention. It is a longitudinal cross-sectional view of the air conditioner shown in FIG. It is the front view (A) of the cover closed state of the remote control which operates the air conditioner shown in FIG. 1, and the front view (B) of a cover open state. FIG. 2 is a block diagram of a control system that eco-operates (energy-saving operation) the air conditioner shown in FIG. 1. It is explanatory drawing of the relationship between the temperature at the time of carrying out eco driving | operation (energy saving driving | operation) of the air conditioner shown in FIG. It is explanatory drawing of the correction | amendment content of the energy saving preset temperature at the time of carrying out the eco air_conditionaing | cooling operation of the air conditioner shown in FIG. It is explanatory drawing of the correction | amendment content of the energy saving preset temperature at the time of carrying out eco heating operation of the air conditioner shown in FIG.

1 Air conditioner 18 Controller 20 Remote control 22 Eco button (energy saving button)
25 Room temperature control unit 26 Eco temperature setting unit 27 Humidity sensor

Claims (3)

In the energy-saving operation method of an air conditioner that sets the set temperature to a predetermined energy-saving set temperature by operating the energy-saving button and operates the air conditioner in energy-saving mode,
During operation in the energy saving mode, the indoor humidity detected by the humidity sensor, have rows further operation of high energy saving by correcting the energy saving set temperature according to the detected humidity,
Furthermore, the rotation speed of an indoor fan is controlled in accordance with the correction of the energy saving set temperature, and the energy saving operation method for an air conditioner.   When the detected humidity falls below a predetermined humidity during cooling, the energy-saving set temperature is corrected to increase according to the humidity, and when the detected humidity rises above the predetermined humidity during heating, 2. The energy-saving operation method for an air conditioner according to claim 1, wherein correction is performed so as to reduce the energy-saving set temperature during heating according to humidity. In the air conditioner that sets the set temperature to a predetermined energy saving set value by operating the energy saving button and operates the air conditioner in the energy saving mode,
During operation in the energy saving mode, the indoor humidity detected by the humidity sensor, have rows further operation of high energy saving by correcting the energy saving set temperature according to the detected humidity,
The air conditioner further comprises a controller for controlling the rotational speed of the indoor fan in accordance with the correction of the energy saving set temperature .

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