JPH02122139A - Airconditioner - Google Patents

Abstract

PURPOSE:To maintain a sleeping environment which helps people fall a sleep easily by providing a preset humidity changing means which shifts a preset humidity to a lower value during a specified time from the operation start in comfortable sleep mode when it is required. CONSTITUTION:When an operation switch is turned on, it is judged whether its operation is in cooling mode or heating mode. If it is in cooling mode, a detection temperature Ta by a temperature sensor 12 and a detection humidity Hs by a humidity sensor 13 are read in, then a preset temperature Ts and a preset humidity Hs set by a final control element 10 are read in successively. When the final control element 10 sets a comfortable sleep switch in that mode, it can be judged whether or not the time elapsed is within one hour since it is preset in comfortable sleep mode. In the case only when it is within one hour, a value subtracted from the preset humidity Hs by 15[%], is specified as a new preset value. If comfortable sleeping mode is not set, or the time elapsed exceeds one hour, there will be no change in these settings.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) This invention provides an air conditioning system that controls a refrigeration cycle according to the deviation between the set humidity and the detected humidity in an air-conditioned room (hereinafter simply referred to as the room). It concerns a harmonization device.

(Prior Art) FIG. 4 is a schematic diagram of a conventional air conditioner of this type. In the figure, a commercial AC power source 1 is connected to an inverter 2 that converts single-phase AC into variable-frequency three-phase AC, and a compressor 3 is connected to the output side of the inverter 2. Compressor 3 has four-way valve 4 and outdoor fan 5
Together with an outdoor heat exchanger 6 having a thermal expansion valve 7 and an indoor heat exchanger 9 having an indoor fan 8, a well-known refrigeration cycle is formed. On the other hand, an operation unit 1 known as a remote control device
Various setting signals and the like of 0 are applied to a control section 11 including a microcomputer.

In addition to this, the control unit 11 receives an output from a temperature sensor 12 that detects indoor temperature, and an output from a humidity sensor 13 that detects indoor humidity. Therefore, the control unit 11 reads these values to determine the output frequency of the inverter 2 and the speed of the fan motor 8a of the indoor fan 8, and also controls these.

In FIG. 4, when the four-way valve 4 is held in the state shown, that is, 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 is turned into the condenser. As a result, the indoor heat exchanger 9 acts as an evaporator, and the outdoor fan 5 and indoor fan 8 promote heat exchange to cool the room.

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

Next, the operation of the control unit 11 in the cooling operation mode will be briefly described. The control unit 11 calculates the deviation ε['C] between the set temperature set by the operation unit 11 and the detected temperature detected by the temperature sensor 12, and if this deviation is 0. 5 Zone d (ε≧1.5), e (1
, 5>ε≧1.0).

f (1,0>ε≧0.5), g (0,5>
ε≧0).

h (0>ε≧−0,5), i (−0,5>ε
), the operating frequency F [Hz] of the compressor is determined as shown in FIG. 5(a). Then, as shown in Figure 5(b), when the room temperature is on a downward trend, the operation is continued at this determined frequency, and when the room temperature is on an upward trend, the frequency corresponding to the temperature deviation one step lower than the actual temperature deviation is used. drive.

In addition, the control unit 1] has a deviation ε from the detected temperature of 1.0 [
The rotational speed M [rpm] (details are omitted) of the indoor fan 8 is determined and operated depending on which zone the indoor fan 8 belongs to, which is defined in increments of [°C].

On the other hand, many of these types of air conditioners can be operated in a dehumidification priority cooling mode that prioritizes dehumidification or a sleep mode that aims to maintain comfort during sleep. Among these, in the dehumidification priority cooling mode, the control unit 11 compares the detected humidity and the set humidity, and when the detected humidity exceeds the set humidity, increases the compressor operating frequency F by changing the set temperature to a lower one. or reduce the speed of indoor fans. In addition, in the sleep mode, as shown in FIG. 6, the control unit 11 increases the set temperature by 1 picC] one hour after the start of the sleep mode operation, and further increases the set temperature by 1 ['C] after two hours. As shown in Figures 7(a) to (C), the minimum operating frequency range g is expanded when one hour has passed from the start of sleep mode operation, and the minimum operating frequency range g has been expanded after two hours have elapsed. There were cases where g was further expanded.

(Problems to be Solved by the Invention) As mentioned above, conventional air conditioners raise the set temperature or expand the minimum frequency operating range when operating in sleep mode, but in both cases, humidity is not equally considered. This is the same as the humidity setting when a person normally wakes up (in this specification, refers to when a person wakes up and is actually active), and both methods are effective in terms of humidity control. The problem was that it was difficult to maintain the

This invention was made in order to solve the above-mentioned problems, and aims to obtain an air conditioner that can maintain a comfortable sleeping environment.

[Structure of the invention]

(Means for Solving the Problems) The present invention provides a sleep mode for maintaining comfort during sleep in an air conditioner that controls a refrigeration cycle according to a deviation between set humidity and detected humidity in an air-conditioned room. In some cases, the apparatus is characterized by comprising a set humidity changing means for shifting the set humidity to a lower value for a predetermined period of time from the start of the sleep mode operation.

(Function) It is said that a sleeping person is most comfortable when the absolute humidity of the bed is 15 to 17 grams per cubic meter, and in order to maintain this condition even if the humidity of the bed increases due to sweating, , the absolute indoor humidity must be maintained at least below this level.

On the other hand, when a person falls asleep, it is the process of transitioning from an active state to a resting state, and the difference between the skin temperature and the body temperature increases and the amount of sweat increases.

Taking these into consideration, in sleep mode driving, it can be said that it is most effective to lower the set humidity from the start of driving until the time when sweating is predicted to stop, rather than setting the humidity normally when waking up.

The present invention focuses on this, and by shifting the set humidity to a lower level for a predetermined period of time after the start of sleep mode operation, the humidity in the room is kept low, and the humidity in the bed increases due to sweating at the end of sleep. I'm trying to keep it down. This solves the problem of conventional devices that make it difficult to fall asleep.

(Embodiment) FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, and the same reference numerals as in the conventional device shown in FIG. 4 indicate the same elements.

The control unit 10 is operated by a user, and is, for example, a remote controller, and includes a sleep operation switch, a humidity setting device, a temperature setting device, and the like. Then, the controller 11 including a microcomputer sets the humidity setting to 15 [1 hour] from the start of the sleep mode.
The difference from FIG. 4 is that a set humidity changing means 11a for changing the humidity setting to a lower value by %] is provided. The operation of the control section 11 including the set humidity changing means 11a will be explained according to the flowchart shown in FIG.

First, in step 101, it is determined whether or not the operation switch has been turned on. If it has been turned on, it is determined in step 102 whether the mode is cooling mode or heating mode. Although the processing for the heating mode will be omitted, if it is the cooling mode, the temperature T detected by the temperature sensor 2 and the humidity H detected by the humidity sensor 3 are read in step 103, and then in step 104 the temperature T detected by the temperature sensor 2 and the humidity H detected by the humidity sensor 3 are read. Read the set temperature T8 and set humidity H.

Next, in step 105, it is determined whether or not the sleep switch of the operation unit 1o is set to sleep mode, and if it is in sleep mode, in step 106, the elapsed time since the sleep mode was set is determined. It is determined whether it is within 1 hour or not, and only if it is within 1 hour, the set humidity H is set to 15[
Use the value after subtracting % as the new humidity setting for the next step 1.
If the sleep mode is not set or the elapsed time exceeds one hour, the process proceeds to step 08 without changing these settings.

Next, in step 108, the set humidity H and the detected temperature H3 are compared, and if the detected humidity Ha is not lower than the set humidity H8, the dehumidification priority cooling mode is set, and step 109
Lower the set temperature T by O,5['C], and then
In step 11-0, the dehumidification priority flag is set to "1".

Next, in step 108, it is determined that H≧H.
a If determined, the dehumidification priority flag is set to "0" in step 111. Further, in step 112, the detected temperature T
The deviation between a and the set temperature T8 is calculated, the compressor operating frequency F corresponding to this deviation is determined, and step 113
Then, the rotation speed M of the indoor fan corresponding to this temperature deviation is determined.

Next, in step 114, the dehumidification priority cooling flag is set to "1".
If it is not "1", that is, if it is normal cooling, the process proceeds to step 116, and a command is given to set the compressor operating frequency F and indoor fan rotation speed M to be the determined ones. If the flag is rOJ, shift the indoor fan rotation speed M to a lower side in step 115,
Thereafter, the processes of steps 101 to 116 described above are repeated.

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

By the way, in the flowchart in Figure 2, step 1
The processing from 05 to 107 is performed by the set humidity changing means 11a in FIG.
corresponds to

FIGS. 3A to 3C show the state of switching to the detected temperature Ta1 dehumidification priority mode and the change in H of the detected humidity when the above control is performed.

That is, time t. Assuming that the cooling operation is started at time t1 and the sleep mode is set at time t1, the detected indoor temperature T quickly decreases over time and falls below the set temperature T, as shown in Figure (a). After that, the barrel is held at the set temperature T.

S On the other hand, as shown in the same figure (b), until the sleep mode operation is started and after one hour has passed since the start of the sleep mode operation, the detected humidity H exceeds the set humidity H. Set room temperature T to 0. 5 ['C] Dehumidification priority mode operation lowered by S is performed, but at time t, one hour has elapsed from time t1 when sleep mode operation is started.
Up to 2, the detected humidity H3 is the humidity whose setting has been changed (H-1
5), the dehumidification priority mode operation is reliably performed. As a result, the detected humidity Ha changes in accordance with the set humidity, although there is some time delay, as shown in FIG. 3(c).

Thus, according to this embodiment, when the sleep mode is set at bedtime, the indoor humidity can be lowered for just one hour, effectively dissipating moisture in the bed due to sweating, and maintaining a suitable sleep environment that facilitates falling asleep. can.

In the above example, the set humidity is set to 15% for one hour only.
] lowered, but these times and changes are due to the structure of the room,
It is also possible to change the bedding at any time depending on the bedding, constitution, etc.

Further, although this embodiment shows a case in which the humidity setting is manually set by the operator, the present invention can also be applied to a case in which a fixed humidity is set in the control unit 10.

Furthermore, although the sound sleep mode was selected using a manual switch in this embodiment, the present invention can also be applied to a system in which sleeping is detected using a light sensor, an outside temperature sensor, etc., and the sound sleep mode is automatically set. Needless to say.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, during the sleep mode for the purpose of maintaining comfort during sleep, the set humidity is shifted to a lower side for a predetermined period of time from the start of the sleep mode operation. Since it is equipped with a changing means, it has the effect of maintaining a sleep environment in which it is easy to fall asleep.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of an embodiment of the present invention. Fig. 2 is a flowchart for explaining the operation of the same embodiment, Fig. 3 is a time chart for explaining the operation of the same embodiment, Fig. 4 is a schematic configuration diagram of a conventional air conditioner, and Fig. 5 (a)
, (b) is an explanatory diagram for explaining the operation of the same device, FIG. 6 is a time chart for explaining the operation of the same device,
FIGS. 7(a) to 7(e) are explanatory diagrams for explaining the operation of the apparatus. 2... Inverter, 3... Compressor, 6...
Outdoor heat exchanger, 8... Indoor fan, 9... Indoor heat exchanger, 10... Operation unit, 11... Control unit, lla.
・Means for changing set humidity.

Claims (1)

[Claims] In an air conditioner that controls the refrigeration cycle according to the deviation between the set humidity and the detected humidity in the air-conditioned room, during a sleep mode that aims to maintain comfort during sleep, the above-mentioned An air conditioner comprising a set humidity changing means for shifting the set humidity to a lower value.