JP2572892B2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an air conditioner such as a room air conditioner which can automatically change a set temperature under a predetermined mode state (for example, a sleep operation). The present invention relates to an air conditioner capable of performing the above-described set temperature changing process in consideration of a heat storage effect.

[0002]

2. Description of the Related Art FIG. 4 is an explanatory diagram of a refrigeration cycle of an example of the air conditioner, and FIG. 5 is a control circuit diagram of an example of the air conditioner. The air conditioner 1 includes a compressor 2 for compressing a refrigerant.
(FIG. 4), a four-way valve for switching the flow path of the refrigerant, an indoor heat exchanger for air-conditioning the room, a decompression device comprising a capillary tube for reducing the pressure of the refrigerant, and for exchanging heat with the outside air. The outdoor heat exchanger 6 is provided. In the vicinity of the heat exchangers 4 and 6, blowers 7 and 8 for sending air to these heat exchangers are provided. A room temperature thermistor 9 for detecting room temperature is attached near the heat exchanger 4.

As shown in FIG. 5, the control circuit of the air conditioner 1 mainly comprises a control unit 10 comprising a microcomputer CPU and the like, and the control unit 10 controls the driving of the blowers 7 and 8 respectively. Relay circuits 11 and 12, a relay circuit 14 for driving and controlling the four-way valve 3,
The relay circuit 15 for driving and controlling the compressor 2 and the room temperature thermistor 9 are connected. In the air conditioner 1, when a predetermined start operation, for example, a start operation for cooling is performed, the compressor 2 and the blowers 7, 8 and the like are operated, and
The refrigerant is circulated in the direction indicated by arrow A in FIG. 4, and the cooling operation is started. Then, based on the temperature detection signal of the room temperature thermistor 9, the compressor 2 is turned on and off (or air-conditioned when the relay circuit 15 is an inverter circuit or the like) so that the detected temperature becomes a preset temperature. Inverter control that varies the output).

Further, when the air conditioner 1 is switched to a predetermined mode (for example, a sleep mode) by a predetermined operation (for example, FIG. 6 (a)), the above-mentioned set temperature is obtained, for example, one hour after the switching. Ts (for example, 26 ° C)
Is changed to Ts + ΔT (for example, Ts + 2 ° C.) (FIG. 6)
(B)), the room temperature is controlled so as to be higher than Ts by ΔT as shown in FIG. On the other hand, if the mode is switched to the sleep mode during the heating operation, on the contrary, the set temperature is lowered by, for example, about 9 ° C., for example, one hour after the switching.

[0005] The purpose of this is to prevent excessive cooling and warming during sleep and to provide comfortable air conditioning in accordance with the activity of the human body. As described above, in the conventional air conditioner 1, when the mode is switched to the sleep mode, the set temperature is uniformly changed by the predetermined temperature after a predetermined time from the time of the switching.

[0006]

By the way, in general, when the room temperature is at the set temperature for a long time, the temperature of the floor, walls and the like also becomes very close to the set temperature, and conversely,
If the period is a short period, the temperature of the wall and the like is considered to be apart from the set temperature. That is, the temperature of the wall or the like at the time of the switching of the sleep operation is not always constant. Therefore, in the conventional air conditioner 1 in which the set temperature is uniformly changed to a predetermined temperature after a predetermined time from the switching of the sleep operation, the temperature of the wall or the like is not always constant. When the temperature of the wall or the like is shifted, the user may feel hot when the temperature of the wall or the like is high, and may feel too cold when the temperature of the wall or the like is low.

In order to eliminate such discomfort such as excessive cooling, it is considered necessary to perform the above-described set temperature shift processing in consideration of the temperature of the wall and the like (heat storage effect). SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an air conditioner in which the air conditioning state during a sleep operation can be made suitable by performing a set temperature shift process in consideration of the heat storage effect of a wall or the like. Things.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to an air conditioner having a function of automatically changing a set temperature under a predetermined mode state. A mode pre-aging means for measuring the time from when the temperature reaches the set temperature at that time to when the predetermined mode is set, and when the predetermined mode is set,
A mode post-aging means for setting a time until the set temperature is changed according to an output value from the mode pre-aging means, and measuring a time after the predetermined mode is entered, and a mode post-aging means. The air conditioner is characterized by comprising a set temperature changing means for changing the set temperature when aging is completed.

[0009]

In this air conditioner, the time from when the room temperature reaches the set temperature before the predetermined mode is reached until the predetermined mode is reached is measured by the pre-mode aging means. The time from when the predetermined mode is set to when the set temperature is changed is set according to the output value from the mode pre-aging means, and the time after the predetermined mode is set by the means. Measured. That is, in this air conditioner, a time period after the predetermined mode is set is measured according to a period in which the room temperature has reached the set temperature. Therefore, the measurement period is a time corresponding to the variation in the temperature (heat storage effect) of the wall and the like when the predetermined mode is set.

In this air conditioner, the set temperature is changed by the set temperature changing means when the post-mode aging means finishes aging. Therefore, when this air conditioner is used, the user does not feel hot or cold when driving in the predetermined mode (for example, during sleep).

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings to provide an understanding of the present invention. still,
The following examples are embodied examples of the present invention and do not limit the technical scope of the present invention. Here, FIG. 1 is a flowchart showing an example of an air conditioning process of the air conditioner according to one embodiment of the present invention, FIG. 2 is an explanatory graph showing an example of a change in room temperature due to the air conditioning process, and FIG. It is explanatory drawing which shows an example of the relationship between pre-aging time and post-mode aging time. Also, since the basic components of the conventional air conditioner shown in FIGS. 4 and 5 and the basic components of the air conditioner according to the present invention have the same configuration, the reference numerals of the basic components shown in these drawings are given the same reference numerals. This will be described below.

In the air conditioner 1 according to this embodiment, FIG.
As shown in FIG. 2, when a predetermined start operation, for example, a start operation for cooling is performed (S1), a preset set temperature is read and various initial settings are made (S1).
2), the compressor 2, the blowers 7, 8 and the like are operated (S3).
(See FIG. 2 (h).) Based on the detected temperature T of the room temperature thermistor 9, the compressor 2 is turned on / off (or inverter controlled) so that the room temperature becomes the set temperature Ts (see FIG. 2 (h)). ) ~). The initial setting process in S2 is as follows.
For example, the timer TM of the control unit 10 for limiting the elapsed time before the mode Δt, the timer TM2 of the control unit 10 for limiting the elapsed time t after the mode, and the data of the counter C of the control unit 10 are respectively set to zero. Is a process to be set.

However, in this air conditioner 1, the temperature T detected by the room temperature thermistor 9 is different from that of the prior art.
(S5) (FIG. 2 (R)) until the mode is switched to the predetermined mode (for example, the sleep mode) (S4).
(N) is measured by the timer TM1. That is,
After the processing in S4 and S5, the timer TM1 is set in S2.
Since the time limit Δt has been reset to zero (S6), the timer TM1 starts the time limit of Δt (S7), and thereafter, S4, S5, (S6), S4, S
The processing of 5, (S6)... Is repeated until the mode is switched to the predetermined mode (S4), and the same Δt is measured. The time Δt from when the room temperature (that is, the detected temperature T of the room temperature thermistor 9) reaches the set temperature Ts at that time before the predetermined mode (for example, the sleep operation mode) is set, is switched to the predetermined mode. The timer TM1 or the like that realizes the function of measuring is an example of the mode pre-aging means.

Further, in the air conditioner 1, when the mode is switched to the predetermined mode (for example, the sleep mode) (S4), the air conditioner 1 is switched from the mode to the predetermined mode (S4).
4, FIG. 2 (nu)), the time until the set temperature is changed is set in accordance with the lapse of time before mode Δt timed by the timer TM1 as described later. That is, the above S2
Since the time limit time t of the timer TM2 is reset to zero (S8), the timer TM2 starts the time limit of t (S16), and the lapse of time before the mode Δt
(That is, for example, 30 minutes from when the room temperature shown in (i) to (nu) in FIG. 2 reaches Ts until the mode is switched to the predetermined mode), is stored in the memory M of the control unit 10 in advance. For example, as shown in FIG.
0 minute is read (S17). Since the post-mode aging time ts is a value corresponding to the pre-mode aging time Δt from when the room temperature reaches the set temperature Ts to when the mode is switched to the predetermined mode as shown in FIG. Above △
If t is long, ts is short, and if △ t is short, ts is long.) This ts is obtained by converting the variation of the temperature (heat storage effect) of the wall or the like into time.

In the air conditioner 1, for example, the ts is divided and timed by the timer TM2 as shown below based on the read-out time ts after the mode. That is, the ts (120 minutes) is divided into, for example, 10 (to = ts / 10) (S18), and the to-time divided by 10 is timed by the timer TM2 which started the time limit in S16 (S9). When the timer TM2 ends the time limit of the to time (S9), the timer TM2
Is reset to zero again (S10), and the time limit for the same to time is started again (S11). Then, the count value n of the counter C, which has been reset to zero in S2, is increased to 1 (S12), and if this count value n does not reach 11 (that is, the total of the divided time limit to of the timer TM2). Does not exceed the above ts) (S1
3) Go to the next step S14. From the time when the mode is switched to the predetermined mode (S4) to the time when the set temperature is changed as will be described later, for example, the division time to is set according to the lapse of time before the mode Δt. The timer TM2 that measures the time after the mode is an example of the post-mode aging means.

In step S13, since n = 1 and n = 11 has not yet been reached, the set temperature Ts (for example, 26 ° C.) is Ts + 0.2 (° C.) (this 0.2 ° C. is, for example, △). T = 1/10 of 2 ° C.) (S1
4, the broken line in FIG. That is, in the air conditioner 1, when the timer TM2 ends the time limit of the division time to in S9, the set temperature is increased by about 0.2 ° C. (S9).
14). As described above, in the air conditioner 1, when the time ts obtained by converting the temperature variation of the wall or the like into time is divided by 10 and the divided time to is timed, the set temperature is increased by about 0.2 obtained by dividing the above ΔT into ten. Therefore, during sleep (that is, when the human body is not active), the user does not feel hot or too cold. Means for realizing the function of changing the set temperature when the timer TM2 ends the time limit of the division time to is an example of the set temperature changing means.

Thereafter, the timer TM2 sets the above S10,
If a predetermined time (for example, 5 seconds) has elapsed since the start of the time limit by the processing of S11 (S15), and if the mode is still switched to the predetermined mode (S4), the time limit of the timer TM2 becomes Since it is 5 seconds or more in S15 (S8), the following S9, S10, S1
1, S12, S13, S14, S15, S4, S8, S
,... Are repeated. That is, the timer TM2
Each time the divided time to is timed again (S9), the process of further increasing the set temperature by 0.2 ° C. (S14, see broken lines in FIG. 2 (E), (W)...) Repeated. When the count value of the counter C reaches 10 (S12), the set temperature becomes Ts +
2 ° C. (where Ts is the initial set temperature read in S2, for example, 26 ° C.) (S14) (FIG. 2)
(T)). Then, when the count value of the counter C is further increased to 11 (S12), the process of changing the set temperature is not performed thereafter.

In the above embodiment, the post-mode lapse time ts is 1
Although the division time to is set by dividing into 0, this division time may be another division number of the same ts, for example, 5 divisions (or no division). In this case, the set temperature is naturally increased by ΔT / 5 = 0.4 ° C. (or ΔT / 1 = 2 ° C.) after the time limit of the division time.

[0019]

According to the present invention, in an air conditioner having a function of automatically changing a set temperature under a predetermined mode state, when the room temperature reaches the set temperature at that time before the predetermined mode is set, the air conditioner starts to operate. A mode pre-aging means for measuring a time until the predetermined mode is set, and a time from when the predetermined mode is set to when the set temperature is changed is set according to an output value from the mode pre-aging means. A post-mode aging means for measuring a time after the predetermined mode has been entered, and
An air conditioner comprising: a set temperature changing means for changing a set temperature. Therefore, if this air conditioner is used, the air-conditioning state in the predetermined mode can be made favorable.

[Brief description of the drawings]

FIG. 1 is a flowchart illustrating an example of an air conditioning process of an air conditioner according to an embodiment of the present invention.

FIG. 2 is an explanatory graph showing an example of a change in room temperature due to the air conditioning process.

FIG. 3 is an explanatory diagram showing an example of a relationship between a pre-mode elapsed time and a post-mode elapsed time in the air conditioning process.

FIG. 4 is a diagram illustrating a refrigeration cycle of an example of a conventional air conditioner.

FIG. 5 is a control circuit diagram of an example of the air conditioner.

FIG. 6 is an explanatory graph showing an example of a change in room temperature due to an air conditioning process of the air conditioner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Air conditioner 2 ... Compressor 9 ... Room temperature thermistor 10 ... Control part C ... Counter M ... Memory TM1 ... Timer (measured before mode) TM2 ... Timer (measured after mode)

Claims (1)

(57) [Claims] 1. An air conditioner having a function of automatically changing a set temperature under a predetermined mode state, wherein when the room temperature reaches the set temperature before the predetermined mode, the predetermined mode is set. A mode pre-aging means for measuring the time until the predetermined mode is reached, and a time from when the predetermined mode is set to when the set temperature is changed is set according to the output value from the mode pre-aging means. A post-mode aging means for measuring the time after the mode is entered,
An air conditioner comprising: a set temperature changing unit that changes a set temperature when the aging unit after the mode ends aging.