JP3509893B2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a sleep driving mode.
Related to air conditioners.

[0002]

2. Description of the Related Art Various methods have been considered so far to improve comfort during sleep. FIG. 3 shows an example of conventional control during cooling sleep.

In FIG. 3, during normal cooling operation, the compressor is repeatedly turned on / off within a set temperature range of ± Δθ1.
When the "good night" button of the air conditioner is pressed at the time of entering the bed at time T0, the set room temperature is changed to? SET increased ?? after an arbitrary time (usually one hour). At this time, since the set temperature is higher than the room temperature, the compressor is stopped. The indoor temperature during cooling sleep is set to θSET, and when the indoor temperature rises over time and reaches θSET + Δθ1 temperature, the compressor is turned on and starts the cooling operation. Thereafter, when the room temperature decreases and reaches the temperature θSET−Δθ1, the compressor is turned off again and the cooling operation is stopped. Thereafter, this operation is repeated during sleep. Further, there is also provided control means for issuing an operation command to the compressor in accordance with a signal indicating a change rate of the room temperature detected by the room temperature detecting means when the compressor is stopped. As such a known example, Japanese Patent Application Laid-Open No.
There is an official gazette.

[0004]

However, in the conventional operation pattern as described above, the operation mode is only the cooling mode, and when the cold wind is discharged and directly hits the human body, the sweat generated by the humid heat cools down and cools down. There was a drawback that it would. Also, in the conventional example, from midnight to dawn, as the outside air temperature decreases and the load on the room decreases,
Even if the compressor is off, the room temperature does not rise much, but the humidity rises due to the diffusion of moisture from the surrounding walls, creating a very mushy indoor environment, which makes it hard to sweat and struggle to sleep. it may be a situation such as wake up occurs, there is a problem such as not able to make a comfortable sleep environment.

It is an object of the present invention to provide a cooling sleep driving mode.
Sometimes it is to create a comfortable sleeping environment .

[0006]

The object of the present invention is to provide a compressor,
An air conditioner having an outdoor heat exchanger, a decompressor, an indoor heat exchanger, and a sleep operation mode having a function of increasing a set temperature, is detected when operating in the sleep operation mode. This is achieved by providing a function of performing a dehumidification operation when the room temperature is equal to or higher than the raised set temperature, and then performing a cooling operation when the detected room temperature is equal to or higher than the set temperature. You. Also,
The above object has a compressor, an outdoor heat exchanger, a decompressor, an indoor heat exchanger, and operates in the sleep operation mode in an air conditioner having a sleep operation mode having a function of increasing a set temperature. When the detected room temperature is equal to or higher than the raised set temperature, the dehumidifying operation is performed for at least a set time, and then, when the detected room temperature is equal to or higher than the set temperature. This is achieved by providing a function of performing a cooling operation.

With the above configuration, the dehumidifying operation is performed when the set temperature is high and the cooling operation is not performed. Therefore, the room is dried, and when the temperature rises , the cooling operation is performed.
Decrease temperature .

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An air conditioner according to the present invention will be described below with reference to the drawings.

FIG. 1 shows a flow chart during cooling sleep according to the present embodiment. If the "sleep mode" is selected, it is checked in step 1 (S1) whether the operation elapsed time ΔT has passed an arbitrary time (usually 1 hour). When the elapsed operation time ΔT has elapsed for one hour, in step 2 (S2), the room temperature setting means 15 sets the indoor set temperature to θSET which is increased by Δθ. Then, step 3 (S3)
Then, the room temperature detected by the room temperature detecting means 14 is compared with the set temperature θSET− △ θ1, and if the room temperature has reached a temperature lower than the set temperature θSET− △ θ1, the process proceeds to step 5 and compression is performed. A stop signal is sent to the compressor 1, but if not, the process proceeds to step 4 (S4) and the operation of the compressor 1 is continued. After the compressor 1 is stopped, in step 6 (S6), the indoor temperature and the set temperature θSET are set.
If the room temperature has reached a temperature higher than the set temperature θSET, the operation proceeds to step 7 (S7) and an operation signal is sent to the compressor 1 and the reheater 12 to perform the dry operation. But if not, step 8
Proceed to (S8). In step 8 (S8), the degree of increase in the room temperature is determined. That is, when the change rate dθ / dt of the indoor temperature when the compressor 1 is stopped is larger than the predetermined value (dθ / dt) SET, that is, when the indoor temperature rises sharply, the process proceeds to step 7 (S7) and An operation signal is sent to the reheater 1 and the reheater 12 to perform a dry operation. If the rate of change dθ / dt is smaller than a predetermined value (dθ / dt) SET, that is, if the room temperature rise is not abrupt. Goes to step 9 (S9), where the room humidity W is compared with the set humidity WSET (normally 60%). If the room humidity reaches a humidity higher than the set humidity WSET, the process goes to step 9 to compress An operation signal is sent to the machine 1 and the reheater 12 to perform the dry operation. If not, the process returns to step 6 and repeats the above flow. If the dry operation is performed in step 7 (S7), the operation proceeds to step 10 (S10) to measure the operation time of the dry operation. If the set time TA elapses, the operation proceeds to step 11 (S11), and the indoor temperature and the set temperature are set. is compared with θSET1, and if the room temperature has reached a temperature higher than the set temperature θSET1, the process returns to step 3; otherwise, the process returns to step 12 (S
Proceeding to 12), the indoor humidity is checked, and if the indoor humidity is not lower than the set humidity WSET, the process returns to step 7 to continue the dry operation. If the room humidity is lower than the set humidity WSET in step 12, the process returns to step 3, and the above contents are repeated.

FIG. 2 shows a time chart based on the flowchart of FIG. During normal cooling operation, set room temperature ± △
The cooling operation is repeated in the range of θ1. When the “Good night” button is pressed at time T0, measurement of the elapsed operation time ΔT starts. In this embodiment, the set temperature is reduced at T1 after one hour has passed.
Since the setting is changed to θSET increased by θ, the cooling operation is stopped. Thereafter, the dry operation is started at T2 when the room temperature gradually rises and reaches θSET. Since the dry operation is a dehumidifying priority operation, the room temperature gradually rises and reaches θSET1, but the elapsed time of the dry operation is an arbitrary set time TA (20 in the present embodiment).
), The dry operation is continued until the set time TA, the dry operation is stopped at T4, and the operation shifts to the cooling operation. At time T5 when the room temperature falls to θSET−Δθ1, the cooling operation is stopped. Again, when the room temperature rises and reaches θSET, the dry operation is started, and at time T7, the set time TA
However, since the room temperature has not reached θSET1, the dry operation is continued. T8 when the room temperature reaches θSET1
Shifts to cooling operation. Hereinafter, the same operation is repeated.
Although not shown in the figure, during the “good night” operation, the room temperature rise rate dθ / dt even if the room temperature did not rise to θSET.
Is larger than a predetermined value (dθ / dt) SET, and when the room humidity is higher than the set humidity WSET, the dry operation is started.

FIG. 4 is a refrigeration cycle diagram of an air conditioner showing one embodiment of the present invention. In FIG. 4, reference numeral 1 denotes a compressor, 2 denotes an outdoor heat exchanger, 3 denotes a decompressor, 4 denotes an indoor heat exchanger, and 5 denotes an accumulator, which are sequentially connected by a pipe 6 to constitute a refrigeration cycle 7.

FIG. 5 is a configuration diagram of an indoor unit of the air conditioner of the present embodiment. In FIG. 5, reference numeral 4 denotes an indoor heat exchanger, 10 denotes an air blowing means for the indoor heat exchanger, 11 denotes an indoor air blowing circuit, and 12 denotes a reheater such as a heater. 14 is a room temperature detecting means for detecting the room temperature, 15 is a room temperature setting means for setting the room temperature, 18 is a comparison between the temperature set by the room temperature setting means 15 and the room temperature detected by the room temperature detecting means 14. Control means for issuing an operation / stop command to the compressor 1 and issuing an operation command to the compressor 1 in response to a signal indicating a change rate of the room temperature detected by the room temperature detection means when the compressor 1 is stopped. Further, the control means 18 is a control means for comparing the difference between the indoor humidity detecting means 16 for detecting the indoor humidity and the indoor humidity setting means 17 for setting the indoor humidity and issuing an operation stop command to the compressor 1. During the dry operation (dehumidification priority operation), the reheater 12 (heater in this embodiment) is energized,
The air once cooled by the indoor heat exchanger 4 is warmed and discharged.

[0013]

According to the present invention, in the cooling sleep driving mode,
Sometimes, a comfortable sleeping environment can be created.

[Brief description of the drawings]

FIG. 1 is a flowchart during cooling sleep according to an embodiment of the present invention.

FIG. 2 is a time chart at the time of cooling sleep in the embodiment of the present invention.

FIG. 3 is a time chart during a conventional cooling sleep.

FIG. 4 is a refrigeration cycle diagram of an air conditioner showing one embodiment of the present invention.

FIG. 5 is a configuration diagram of an indoor unit of the air conditioner according to the embodiment of the present invention.

[Explanation of symbols]

1 ... Compressor, 2. Outdoor heat exchanger, 3 ... decompressor, 4: Indoor heat exchanger 6 ... pipeline, 10 ... blowing means for indoor heat exchanger 11 ... indoor ventilation circuit, 12 ... reheater, 13. Indoor unit, 14 room temperature detecting means 15 ... room temperature setting means 16 ... indoor humidity detecting means 17 ... indoor humidity setting means, 18 Control means.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor: Tetsunobu Okamura 800, Tomita, Ohira-cho, Shimotsuga-gun, Tochigi Prefecture Inside the Living Equipment Division, Hitachi, Ltd. 800 Living Equipment Division, Hitachi, Ltd. (56) References JP-A-5-296525 (JP, A) JP-A-4-363537 (JP, A) JP-A-60-144550 (JP, A) JP-A-6-185784 (JP, A) JP-A-6-294540 (JP, A) JP-A-59-128035 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 11 / 02

Claims (5)

(57) [Claims] 1. An air conditioner comprising a compressor, an outdoor heat exchanger, a decompressor, and an indoor heat exchanger and having a sleep operation mode having a function of increasing a set temperature, operating in the sleep operation mode. When the detected room temperature is equal to or higher than the set temperature, the dehumidifying operation is performed.After that, when the detected room temperature is equal to or higher than the set temperature, the cooling operation is performed. An air conditioner with a function to perform. 2. An air conditioner comprising a compressor, an outdoor heat exchanger, a decompressor, and an indoor heat exchanger and having a sleep operation mode having a function of increasing a set temperature, operating in the sleep operation mode. When the detected room temperature is equal to or higher than the raised set temperature, the dehumidifying operation is performed for at least a set time, and then the detected room temperature is equal to or higher than the set temperature. An air conditioner equipped with a function to perform cooling operation at times. 3. The method of claim 2, even when the detected room temperature is lower than the set temperature as the rise, when the temperature increase rate of the detected room temperature is equal to or larger than a set value, small
An air conditioner equipped with a function to execute a dehumidifying operation at least for a set time. 4. The dehumidifying operation according to claim 2, wherein even when the detected room temperature is lower than the increased set temperature, when the indoor humidity becomes equal to or higher than the set humidity, the dehumidifying operation is performed for at least a set time. An air conditioner with a function to perform. 5. The method of claim 2, wherein the detected ambient temperature is rather low than the temperature higher than the set temperature, when the room humidity is equal to or greater than the preset value, the air conditioner having a function to continue the dehumidifying operation.