JPH0794909B2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention relates to air for controlling a refrigeration cycle according to a deviation between a set humidity and a detected humidity in a room to be air-conditioned (hereinafter, simply referred to as room). It relates to a harmony device.

(Prior Art) FIG. 4 is a schematic configuration diagram of a conventional air conditioner of this type. In the figure, a commercial AC power supply 1 is connected to an inverter 2 that converts a single-phase AC into a three-phase AC having a variable frequency, and a compressor 3 is connected to the output side of the inverter 2. The compressor 3 is a four-way valve 4, an outdoor fan 5
A well-known refrigeration cycle is formed with the outdoor heat exchanger 6 having the above, the thermal expansion valve 7, and the indoor heat exchanger 9 having the indoor fan 8. On the other hand, an operation unit 10 known as a remote control device
Various setting signals and the like are added to the control unit 11 including a microcomputer. In addition to this, the output of the temperature sensor 12 that detects the indoor temperature and the output of the humidity sensor 13 that detects the indoor humidity are added to the control unit 11. Therefore, the control unit 11 reads these values, determines the output frequency of the inverter 2 and the speed of the fan motor 8a of the indoor fan 8, and controls them.

In FIG. 4, when the four-way valve 4 is held in the illustrated state, that is, when in the cooling operation mode, the refrigerant is circulated in the direction of the arrow by the compressor 3, and the outdoor heat exchanger 6 becomes the condenser. As a result, the indoor heat exchanger 9 acts as an evaporator, and the outdoor fan 5 and the indoor fan 8 accelerate heat exchange, respectively, to cool the room.

If the four-way valve 4 is switched to the side opposite to that shown, that is, if the heating operation mode is set, the refrigerant is circulated in the direction opposite to the arrow to perform the heating operation. Since it is not related, its explanation is omitted.

Next, the operation of the control unit 11 in the cooling operation mode will be briefly described. The control unit 11 determines the deviation ε between the set temperature set by the operation unit 11 and the detected temperature detected by the temperature sensor 12.
[° C] is calculated, and this deviation is set in increments of 0.5 ° C. Zones d (ε ≧ 1.5), e (1.5> ε ≧ 1.0), f (1.0> ε ≧ 0.5),
Depending on which of g (0.5> ε ≧ 0), h (0> ε ≧ −0.5), and i (−0.5> ε), the operating frequency F [Hz of the compressor is as shown in FIG. 5 (a). ] Is decided. And
As shown in FIG. 5 (b), when the room temperature tends to decrease, the operation is performed at this determined frequency as it is, and when the room temperature tends to increase, the operation is performed at the frequency corresponding to the temperature deviation one step lower than the actual temperature deviation.

Further, the control unit 11 determines whether or not the deviation ε with respect to the detected temperature belongs to the zone defined by the unit of 1.0 [° C.].
The rotation speed M [rpm] (details of which are omitted) is determined to operate.

On the other hand, many air conditioners of this type can be operated in a dehumidification priority cooling mode in which dehumidification is prioritized or in a sleep mode for the purpose of maintaining comfort during sleep. Of these, in the dehumidification priority cooling mode, the control unit
11 compares the detected humidity with the set humidity, and when the detected humidity exceeds the set humidity, the compressor operating frequency F is increased or the speed of the indoor fan is decreased by changing the set temperature to the lower one. In the sleep mode, as shown in FIG. 6, the control unit 11 raises the set temperature by 1 [° C.] 1 hour after the start of the sleep mode operation and further raises the set temperature by 1 [° C.] 2 hours later. As shown in FIGS. 7 (a) to 7 (c), the minimum operating frequency range g is expanded when one hour has passed from the start of the sleep mode operation,
In some cases, this minimum operating frequency range g was further expanded when two hours had passed.

(Problems to be Solved by the Invention) As described above, the conventional air conditioner raises the set temperature during the sleep mode operation or expands the lowest frequency operation range, but in any case, the humidity is not considered. However, it is the same as the humidity setting during normal wake-up (in this specification, when a person wakes up and is actually active), and both methods are comfortable during sleep in terms of humidity control. There was a problem that it was difficult to maintain.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain an air conditioner that can maintain a comfortable sleeping environment.

[Structure of Invention]

(Means for Solving the Problems) The present invention relates to an air conditioning apparatus that controls a refrigeration cycle according to a deviation between a set humidity and a detected humidity in an air-conditioned room, and a sleep mode for the purpose of maintaining comfort during sleep. Sometimes
It is characterized in that a set humidity changing means for shifting the set humidity to a lower side for a predetermined time from the start of the sleep mode operation is provided.

(Working) It is most comfortable for sleeping people when the absolute humidity of the bed is 15 to 17 grams per cubic meter, and to maintain this condition even when the humidity of the bed increases due to sweating. , At least the absolute humidity in the room must be kept lower than this.

On the other hand, the sleeping edge of a person is in the process of transitioning from the active state to the static state, the difference between the skin temperature and the in-body temperature widens, and the amount of sweating increases.

Considering these facts, it can be said that in the sleep mode operation, it is most effective to lower the set humidity from the start of the operation to the time when it is predicted that sweating will stop, rather than the normal humidity setting when waking up.

The present invention focuses on this, by keeping the room humidity low by shifting the set humidity to the lower side for a predetermined time from the start of the sleep mode operation, and increasing the humidity of the bed accompanying the sweating at the sleeping edge. I try to keep it down. By doing so, the problem of the conventional device that does not sleep well is solved.

(Embodiment) FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, in which the same reference numerals as those in the conventional apparatus shown in FIG. 4 indicate the same elements. The control unit 10 is operated by a user, for example, a remote controller,
This operation unit 10 includes a sleep operation switch, a humidity setting device, a temperature setting device, and the like. 4 is different from FIG. 4 in that the control unit 11 including a microcomputer is provided with a set humidity changing means 11a for changing the set humidity to a value lower by 15 [%] for 1 hour after the start of the sleep mode. ing.
The operation of the control section 11 including the set humidity changing means 11a will be described with reference to the flowchart of FIG.

First, in step 101, it is determined whether or not the operation switch is turned on, and if it is turned on, it is determined in step 102 whether it is the cooling mode or the heating mode. Although the heating mode processing is omitted, if it is the cooling mode, step 103
In step 104, the detected temperature T _a of the temperature sensor 12 and the detected humidity H _a of the humidity sensor 13 are read, respectively, and then in step 104, the set temperature T _s and the set humidity H _s set by the operation unit 10 are read.

Next, in step 105, it is determined whether or not the sleep switch of the operation unit 10 is set to the sleep mode, and if it is in the sleep mode, the elapsed time from setting the sleep mode in step 106 is 1 Determine whether it is within the time, 1
Only when it is within the time, the value obtained by subtracting 15 [%] from the set humidity H _{s is} set as the new set humidity, and the process proceeds to the next step 108. If the sleep mode is not set, the elapsed time is 1 hour. If it exceeds, the process proceeds to step 108 without changing these settings.

Next, compared with the set humidity H _s and the detected humidity H _a at step 108, the detected humidity H If _a is not lower than the set humidity H _s, the dehumidification priority cooling mode, set at step 109 the temperature T _s Is decreased by 0.5 [° C.], and then the dehumidification priority flag is set to “1” in step 110.

Next, when it is determined in step 108 that H _s ≧ H _a , the dehumidification priority flag is set to “0” in step 111.
Further, in step 112, the deviation between the detected temperature T _a and the set temperature T _s is calculated, the compressor operating frequency F corresponding to this deviation is determined, and in step 113 the rotation speed M of the indoor fan corresponding to this temperature deviation. To decide.

Next, in step 114, it is determined whether or not the dehumidification priority cooling flag is "1", and if it is not "1", that is, if it is normal cooling, the routine proceeds to step 116, where the determined compressor operating frequency F and indoor A command is given so that the fan rotation speed becomes M. If the flag is "0", step
At 115, the indoor fan speed M is shifted to the lower side,
The above steps 101 to 116 are repeated.

Thus, in the sleep mode, the operation is performed with the set humidity lowered by 15% for only one hour from the start of the sleep mode operation.

By the way, step 10 in the flowchart of FIG.
The processes 5 to 107 correspond to the set humidity changing means 11a in FIG.

Figure 3 (a) ~ (c) are switching state of the detected temperature T _a, dehumidification priority mode when performing the above control, and shows the change of H _a detection humidity.

That is, assuming that the cooling operation is started at time t ₀ and the sleep mode is set at time t ₁ , the detected temperature T _{a in the} room rapidly decreases with the passage of time as shown in FIG. After the temperature drops below T _s, it is almost the set temperature.
_Held at T _s . On the other hand, as shown in FIG. (B), and until sleep mode operation is performed, after the expiration of 1 hour from the start of the sleep mode operation, the detected humidity H _a set humidity H _s
When the set room temperature T _s is decreased by 0.5 [° C], the dehumidification priority mode operation is performed. However, from the time t ₁ when the sleep mode operation starts to the time t ₂ when 1 hour elapses, the detected humidity is
Since H _a is compared with the reconfigured humidity (H _s −15),
The dehumidification priority mode operation is surely performed. As a result, the detected humidity H _a changes according to the set humidity with some time delay, as shown in FIG.

Thus, according to this embodiment, when the sleep mode is set at bedtime, the indoor humidity can be lowered for one hour, and the moisture in the bed due to perspiration can be effectively diffused to maintain a good sleeping environment with good sleep. it can.

In the above embodiment, the set humidity is set to 15 [%] only for 1 hour.
Although it has been lowered, these times and changes can be changed at any time depending on the structure of the room, the difference in bedding, the constitution, and the like.

In addition, although the operator manually sets the humidity setting in the present embodiment, the present invention can be applied to the controller in which the fixed humidity is set.

Furthermore, although the sleep mode is selected by the manual switch in the present embodiment, the present invention can be applied to a sleep mode detected by an optical sensor, an outside air temperature sensor, etc., and automatically set to the sleep mode. Needless to say.

〔The invention's effect〕

As is clear from the above description, according to the present invention, during the sleep mode for the purpose of maintaining comfort during sleep,
Since the set humidity changing means for shifting the set humidity to the lower side for a predetermined time from the start of the sleep mode operation is provided, there is an effect that a good sleeping environment can be maintained.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of the present invention. FIG. 2 is a flow chart for explaining the operation of the embodiment, FIG. 3 is a time chart for explaining the operation of the embodiment, FIG. 4 is a schematic configuration diagram of a conventional air conditioner, and FIG. (A) and (b) are explanatory views for explaining the operation of the device, FIG. 6 is a time chart for explaining the operation of the device, and FIGS. 7 (a) to (c) are for the device. It is explanatory drawing for demonstrating operation. 2 ... Inverter, 3 ... Compressor, 6 ... Outdoor heat exchanger, 8 ... Indoor fan, 9 ... Indoor heat exchanger, 10 ...
… Operation part, 11 …… Control part, 11a …… Set humidity changing means.

Claims (1)

[Claims] 1. An air conditioner for controlling a refrigeration cycle according to a deviation between a set humidity and a detected humidity in an air-conditioned room, in a sleep mode for the purpose of maintaining comfort during sleep,
An air conditioner comprising: a set humidity changing means for shifting the set humidity to a lower side for a predetermined time from the start of the sleep mode operation.