JPH0674529A - Air-conditioner - Google Patents

Abstract

PURPOSE:To surely change a humidity control and rapidly dehumidify. CONSTITUTION:When a user in a room operates a remote controller, sets an operation mode to 'dry' and sets a setting temperature and a setting humidity, these signals are sent to a dehumidifying operation control part 26 through a receiving part 4. To the control part 26 is input detecting values Ta, Ha from sensors 23 and 24 and operating conditions are determined based on a dehumidifying operation control table 27. Then, in accordance with the determined conditions, an inverter 16, a room fan 20 and an auxiliary heater 21 are controlled. At this time, the control humidity range of the control table 27 is smaller than the setting humidity range of the remote controller. Therefore, when it is desired to change the setting temperature, the operating conditions can be surely changed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner capable of performing dehumidifying operation by operating an operating device (remote control).

[0002]

2. Description of the Related Art In a domestic air conditioner, generally, as shown in FIG. 6, a receiving section 4 of an indoor unit 3 receives an optical signal such as an infrared beam emitted from a transmitting section 2 of a remote controller 1. As a result, the operation of the air conditioner is performed in the designated mode.

FIG. 7 is an explanatory view showing the arrangement of various operation buttons and a display section of the remote controller 1. Run / stop button 5
A temperature setting button composed of an ascending button 6a and a descending button 6b, a humidity setting button 7, and an operation mode setting button 5 are provided below. Further, the display unit 9 displays room temperature (detected temperature), set temperature, set humidity, "cooling", "dry", "heating",
The operation mode name such as "Blow" is displayed.

Each time the run / stop button 5 is pressed, the air conditioner is alternately operated and stopped, and the set temperature is displayed one time each time the up button 6a or the down button 6b is pressed.
It goes up or down in steps of ℃. With regard to the humidity setting button 7, the display is "low" each time it is pressed,
It is designed to switch cyclically in the order of "standard" and "higher". Similarly, for the operation mode setting button 8, each time the operation mode setting button 8 is pressed, the display changes to "cooling", "dry",
It is designed to switch cyclically in the order of "heating" and "blowing".

By the way, the humidity control is carried out only when the operation mode is "dry" (dehumidification), and concrete numerical values of the humidity when "low", "standard" and "high" are set. Are 50%, 60%, and 70%, respectively, as shown in FIG.

In this case, since the set humidity range is 10% each, the control humidity range of the humidity control performed on the indoor unit 1 side is also divided into three stages of 10% in accordance with this.
Then, the operating conditions such as the frequency of the compressor control inverter, the rotation speed of the indoor fan, and the energization of the auxiliary heater are controlled so that the actual humidity in the room matches the set humidity.

[0007]

However, when the set humidity width on the remote controller 1 side and the control humidity width on the indoor unit 3 side are the same as described above, when the set humidity is switched, Depending on the actual value of the indoor humidity at that time, the operating conditions on the indoor unit 3 side may not be switched.

This is because hysteresis is provided in the upper limit and the lower limit, although they are slight with respect to changes in humidity. For example, this hysteresis is 2.5%, and the set humidity is set from "standard" (60%) to "low" (50%).
%), The indoor humidity at that time is 60 to 6%.
If the value is between 2.5%, the humidity control is still performed on the indoor unit 3 side under the same operating conditions as the “standard” time. No changes were made and no prompt response was given.

The present invention has been made in view of the above circumstances, and ensures that the humidity control is switched.
It is intended to provide an air conditioner that can quickly dehumidify up to a set value.

[0010]

Means for Solving the Problems As a means for solving the above problems, the present invention provides a dehumidifying operation control unit in which the dehumidifying operation control unit in the indoor unit keeps a constant level when a dehumidifying operation command is sent from an operating unit to the indoor unit. Based on the dehumidifying operation control table in which the dehumidifying operation conditions are set for each control zone divided by the control humidity range, the frequency control of the compressor control inverter, the rotation speed control of the indoor fan, and the energization control of the auxiliary heater In the air conditioner for performing the above, the control humidity range of the dehumidifying operation control table is smaller than the set humidity range of the operating device.

[0011]

In the above structure, the dehumidifying operation control section in the indoor unit controls the inverter indoor fan and the auxiliary heater based on the dehumidifying operation control table. The control humidity range of this dehumidifying operation control table is It is divided more finely than the set humidity range.

Therefore, when the user in the room operates the operating device to switch the set humidity, the dehumidifying operation condition is always switched regardless of the value of the indoor humidity at that time. Therefore, the indoor humidity quickly reaches the set humidity.

[0013]

Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 is a block diagram showing the configurations of the indoor unit and the outdoor unit of this embodiment.

In FIG. 1, the refrigerant discharged from the compressor 11 in the outdoor unit 10 is sent to the indoor heat exchanger 13 through the four-way valve 12 and is heat-exchanged there. The heat-exchanged refrigerant is sent to the outdoor heat exchanger 15 through the expansion valve 14, where it is further heat-exchanged, and then circulated again through the four-way valve 12 to the suction side of the compressor 11. There is.

The compressor 11 is driven by a compressor motor 17 which is controlled at a variable speed by an inverter 16, and an outdoor fan 18 is provided near the outdoor heat exchanger 15. Outdoor unit control unit 19
Controls the frequency of the inverter 16 and the outdoor fan 1
A rotation speed control of 8 is performed.

On the other hand, The indoor heat exchanger 13 is provided on the indoor unit 3 side.
An indoor fan 20 is provided in the vicinity of, and an auxiliary heater 21 to which a triac 22 is connected is further provided.
A temperature sensor 23 and a humidity sensor 24 are provided near the air outlet of the indoor unit 3.

Dehumidifying operation control unit 26 in the indoor unit control unit 25
Inputs the signal from the remote controller 1 via the receiving unit 4, inputs the detection signals of the indoor temperature Ta and the indoor humidity Ha from the temperature sensor 23 and the humidity sensor 24, and operates under the dehumidifying operation control table 27. According to
The inverter 16, the indoor fan 20, and the auxiliary heater 21 are controlled. The dehumidifying operation control table 27 is composed of a memory, and stores the contents of FIG. 4 described later.

Next, the operation of the present embodiment configured as described above will be described with reference to the flow charts of FIGS.

FIG. 2 shows a control flow of the remote controller 1. First, it is judged whether or not the vehicle is currently in operation (step 1). If it is in operation, it is next determined whether or not the run / stop button 5 has been pressed (step 2), and if it has been pressed, a stop command is transmitted to the indoor control unit 25 side (step 3), and step Return to 1. Run / stop button 5 in step 2
If is not pressed, it is determined whether or not the temperature setting buttons 6a and 6b, the humidity setting button 7, the operation mode setting button 8 and the like are pressed (step 4). Return. That is, the operation is continued as it is.

Even if the vehicle is not in operation in step 1, next,
It is judged whether or not the run / stop button 5 is pressed (step 5). If not pressed, the process returns to step 1, and if it is pressed, it is judged whether or not the driving mode is "dry". (Step 6). If it is an operation mode other than "dry", an operation command is transmitted to the indoor unit controller 5 side so that the set temperature Ts is reached under that operation mode (step 7).

When the operation mode is "dry", it is judged whether the humidity setting at that time is "high", "standard" or "low" (step 8), and the humidity is set under the dry mode. The indoor unit controller 25 side sets the set temperature Ts and the set humidity H so that the set temperature Ts and the set humidity Hs are obtained.
An operation command such as s is transmitted (step 9).

FIG. 3 shows a control flow on the side of the indoor unit controller 25. First, it is judged whether or not the vehicle is currently in operation (step 51). If it is in operation, then it is judged whether or not a stop command is input from the remote controller 1 (step 52). If the stop command is input, the compressor 1
1. The operation of the outdoor fan 18, the indoor fan 20, etc. is stopped (step 53).

If not in operation at step 51, then
It is determined whether or not an operation command from the remote controller 1 is input (step 54), and if not input, the process returns to step 51.
Command data such as s and set humidity Hs are stored (step 55), and the process proceeds to step 58.

If there is no stop command from the remote controller 1 in step 52, then it is further determined whether or not a driving command from the remote controller 1 is input (step 56). If the operation command is input, the operation mode and the set temperature T
s, the set humidity Hs, and other command data are stored (step 57), the indoor temperature Ta and the indoor humidity Ha detected by the temperature sensor 23 and the humidity sensor 24 are read (step 58), and the stored operation mode is "dry"
Or not (step 59).

If the operation mode is not "dry" but another mode, the operation mode is controlled (step 60). However, when the operation mode is “dry”, the dehumidification operation control unit 26 determines that the dehumidification operation control table 27
Based on the above, the operating condition is determined (step 61), and the dehumidification control is performed under this determined condition (step 62). That is, the frequency of the inverter 16 is controlled via the outdoor unit control unit 19, the rotation speed of the indoor fan 20 is controlled to control the air volume, and the triac 22 is turned on / off to control the energization of the auxiliary heater 21. I do.

Next, the dehumidifying operation control table 27 will be described. The dehumidification operation control table 27 of this embodiment stores dehumidification operation conditions as shown in FIG.

That is, the horizontal axis shows the deviation with respect to the set humidity Hs, and the vertical axis shows the deviation with respect to the set temperature Ts. The operating condition is switched so that the operating condition is switched every time the deviation value changes by 5% with respect to the set humidity Hs.
It is divided into 5 zones from zone to E zone. Further, even in the same zone, the operating condition is switched every time the deviation value with respect to the set temperature Ts changes by 0.5 ° C.

In each zone in the figure, [P. The zone in which [P.] is entered indicates the zone in which the auxiliary heater 21 is energized. Zones in which P] is not entered indicate zones in which the auxiliary heater 21 is not energized.
[L] and [UL] indicate the air volume by the indoor fan 20, [L] is 200 [m ³ / h], and [UL]
Is 150 [m ³ / h]. Also, [0], [1
The numerical values of 0], [13], [16], and [28] represent the output frequency value [Hz] of the inverter 16.

Therefore, for example, when the operation mode is set to "dry", the set humidity is set to "standard" (60%), and the set temperature is set to 20 ° C, if the indoor detected humidity is 61%, First, it was decided to be controlled under the operating conditions of the B zone, and the indoor detected temperature was 20.8 ° C.
If so, [P. It is determined that the control is performed under the conditions of P], [16], and [UL]. That is, the auxiliary heater 21 is energized, and the output frequency of the inverter 16 is 16 Hz.
At this point, the compressor 11 is operated, and dehumidification control is performed so that the air volume by the indoor fan 20 becomes 150 [m ³ / h].

At this time, after the user in the room sets the set humidity of the remote controller 1 to "standard" as described above,
If it is immediately switched to "lower" (50%), the deviation value with respect to the set humidity Hs changes from 1% to 11%, and the control zone is switched from the B zone to the D zone. Since the set temperature Ts does not change, it is controlled under the conditions of [28] and [L].

As described above, the set humidity range on the remote controller 1 side is 10%, while the control humidity range on the dehumidifying operation control table 27 is set to 5%. Therefore, when the set humidity of the remote controller 1 is changed. The operating conditions can be reliably switched.

By the way, in FIG. 4, in order to prevent a so-called chattering phenomenon, a differential of 2.5% and a differential of 0.5 to 1.0 ° C. are respectively obtained when the humidity Ha and the temperature Ta increase and when they decrease. Minutes are provided. FIG. 5 is an explanatory diagram showing the changing direction of the operating condition when such a differential component is provided.

That is, FIG. 5 (a) focuses only on the change of the humidity Ha without considering the change of the temperature Ta.
As shown in this figure, when the humidity Ha rises, it passes over the portion where the differential component is provided, and switches from the left side to the right side zone as indicated by the one-dot chain line arrow. As the humidity Ha decreases, it switches from the right side to the left side zone, as shown by the dotted arrow, through the portion where the differential component is provided.

On the other hand, FIG. 5 (b) focuses on only the change in temperature Ta without considering the change in humidity Ha. As shown in this figure, when the temperature Ta is decreasing, the operating conditions are switched through the left side of each zone as shown by the dashed line arrow, and the temperature Ta is increasing. When going, the operating conditions are switched through the right side of each zone as indicated by the dotted arrow.

Here, in the case of the conventional device, the set humidity width on the remote controller 1 side is 10%, so that the control humidity width of the dehumidification operation control table 27 is also 10%, and the differential is also used. Since the minutes were set at 2.5%, even if the set humidity of the remote controller 1 was changed, the operating conditions might not be changed.

That is, in the above-mentioned example, in the dehumidifying operation control table of the conventional apparatus, the combination of the B zone and the C zone is set as one zone, so the deviation value with respect to the set humidity Hs is 1. Even if the percentage changes from 11% to 11%, the dehumidifying operation may be performed in the same zone without changing the conditions because the differential amount of 2.5% is provided. According to the present invention, such a problem is solved.

In the above embodiment, the case where the operating device is a remote control that emits an infrared beam has been described, but this operating device may be of a type that is connected to the indoor unit through a control cable. It may be of a type integrally attached to the indoor unit.

Further, it is needless to say that the numerical values shown in FIG. 4 and the numerical value of the set humidity range of the remote controller are merely examples, and these numerical values can be set arbitrarily.

[0039]

As described above, according to the present invention, since the control humidity range of the dehumidifying operation control table is set to be smaller than the set humidity range of the operating unit, the humidity control can be switched reliably. It is possible to perform dehumidification quickly.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an indoor unit and an outdoor unit according to an embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation on the remote control side of FIG.

FIG. 3 is a flowchart for explaining the operation on the indoor unit side of FIG.

FIG. 4 is an explanatory diagram showing the contents of a dehumidification operation control table shown in FIG. 1.

FIG. 5 is an explanatory diagram showing the direction of change of the operating conditions in FIG.

FIG. 6 is a perspective view showing appearances of a remote controller and an indoor unit.

FIG. 7 is an explanatory diagram showing a layout of operation buttons and the like of a remote controller.

FIG. 8 is a table showing specific numerical values corresponding to names of set humidity of the remote controller.

[Explanation of symbols]

 1 Operation unit (remote control) 3 Indoor unit 16 Inverter 20 Indoor fan 21 Auxiliary heater 26 Dehumidification operation control unit 27 Dehumidification operation control table Hs Set humidity Ha Indoor detected humidity

Claims (1)

[Claims] 1. When a dehumidifying operation command is sent from the operating unit to the indoor unit, the dehumidifying operation control section in the indoor unit determines the dehumidifying operation condition for each control zone divided by a constant control humidity width. Based on the dehumidifying operation control table that is defined, in the air conditioner that performs frequency control of the compressor control inverter, rotation speed control of the indoor fan, and energization control of the auxiliary heater, the control humidity width of the dehumidifying operation control table is An air conditioner having a width smaller than a humidity range set by the operating device.