JP2002031390A - Controller for air-conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air-conditioning system, enabling centralized control of a plurality of heat accumulation units installed respectively in a plurality of groups of a multizone air-conditioning system by use of a single controller. SOLUTION: The air-conditioning system group G1 comprises an outdoor unit A1, a heat accumulation unit B1 and at least three indoor units (D11-D13, and others). Units of each group (G1-G3) are respectively connected to neutral two-core communication lines T1-T3 and further connected to a system controller S1, for effecting centralized administration control of the whole air conditioning system by a communication line T0. The heat accumulation units (B1-B3) of the respective groups (G1-G3) are connected to the controller 10, by a neutral two-core communication line P10 so as to effect centralized administration control of the respective heat accumulation units (B1-B3).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning system that includes a heat storage unit and conducts a heat storage operation by introducing a refrigerant to an indoor unit via the heat storage unit, and more particularly to a control device for the heat storage unit.

[0002]

2. Description of the Related Art In general, a heat storage unit is provided between an outdoor unit and an indoor unit. For example, during the period when electricity rates are low from 10:00 at night to 8:00 in the next morning, the liquid refrigerant from the outdoor unit is supplied in summer. Ice is supplied to the heat storage unit to make ice, and in the daytime when the temperature rises, cooling is performed by using the heat storage unit that stores the ice as a condenser to condense the refrigerant. 2. Description of the Related Art There is known an air conditioning system that performs heating by supplying a refrigerant gas to the heat storage unit to produce hot water and using the heat storage unit storing the hot water during daytime as an evaporator for evaporating a refrigerant.

[0003] The configuration of the air conditioning system described above is shown in FIG.
As shown in the figure, one or two outdoor units (A1, A2,
A3) includes one heat storage unit (B1, B2, B3) and a plurality of indoor units (D11 to D13, D21 to D23,
D31 to D33) may be used as one group constituted by a plurality of groups (G1 to G3).

[0004]

However, in a control device for a multi-type air conditioning system using a heat storage unit having such a configuration, a controller (remote controller and weekly timer) is prepared for each heat storage unit in each group. Needed.

According to the present invention, there is provided a control device which uses the above-described heat storage unit to centrally control the heat storage units installed in a plurality of groups of a multi-type air conditioning system with a single controller. is there.

[0006]

In order to solve the above-mentioned problems, according to the present invention, a plurality of groups of air conditioners are connected on the same communication line, and each group includes at least an indoor unit and a heat storage unit. In a system for controlling the operation of each indoor unit in each group by a control device, the control device controls one heat storage unit of each group and a timer setting procedure for determining an operation time. It is also to serve as.

The first aspect of the invention has the following operation.

The control device of the present invention can be centrally controlled by a single controller (remote controller and weekly timer) on a communication line connected to a plurality of heat storage units. As compared with the case where a controller is required, the operability is excellent and the cost can be reduced.

According to a second aspect of the present invention, in the air conditioner control device according to the first aspect, the operation start time and the end time can be set on a daily basis, and
That is, weekly operation management can be performed.

The invention according to claim 2 has the following operation.

[0011] The control device of the present invention can set the operation time of the heat storage unit for one week in a day unit, thereby improving the convenience for the user.

According to a third aspect of the present invention, in the air conditioning system control device according to the first aspect, by setting a specific day of each week of a week as a holiday, the air conditioning system operates on the specific day. That is, it is possible to set not to perform.

The third aspect of the invention has the following operation.

[0014] The control device of the present invention, as a method for canceling the timer operation of the air conditioning system (heat storage unit) on a specific day of the week, is possible by setting the day of the week as a holiday, thereby improving the operability of the user. Can be.

According to a fourth aspect of the present invention, the control device for an air conditioning system according to the first aspect includes an enable / disable button for a timer setting procedure, and when the enable button is turned on, the operation content set by the timer is set. When the invalidation button is turned ON, the air conditioning system is completely stopped.

The invention described in claim 4 has the following operation.

The control device of the present invention enables the user to operate the air-conditioning system (heat storage unit) in accordance with the contents of the timer setting only by operating a valid / invalid button. Performance can be improved.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes an outdoor unit (heat source side unit). The outdoor unit includes a compressor 2
, A four-way valve 3 and an air-cooled outdoor heat exchanger (heat source side heat exchanger) 4 that performs a heat exchange action by an outdoor fan (not shown)
, An outdoor expansion valve 5, a liquid receiver 6, and a gas-liquid separator 7, which are connected by piping.

Numeral 8 denotes a liquid pipe 10 constituting a pipe 9 between the units.
Reference numeral 11 denotes a gas-side connection port connected to a gas pipe 12 constituting the unit-to-unit piping 9. Reference numeral 12 denotes a discharge dedicated port, which is connected to a discharge dedicated pipe 13 branched from a discharge pipe of the compressor 2. Reference numeral 14 denotes a dedicated suction port, which is connected to a dedicated suction pipe 15 branched from a suction pipe of the compressor 2. In this way, the ejection dedicated port 12
(Discharge dedicated pipe 13) and suction dedicated port 14 (suction dedicated pipe 15) are connected to the liquid and gas side connection ports 8, which are connected to the liquid pipe 10 and the gas pipe 12 constituting the unit-to-unit pipe 9.
11 is provided separately.

An indoor unit (use side unit) 16 and a heat storage unit 19 are connected to the outdoor unit 1.

The indoor unit 16 includes an indoor heat exchanger 17
And an indoor expansion valve 18. The heat storage unit 19 has a built-in heat storage heat exchanger 20 submerged in a heat storage tank 50, has first to third connection ends, and the first connection end 21 is a first on-off valve. 22 and a second connection end 24 to the heat storage heat exchanger 20 via a check valve 23.
Is connected to the heat storage heat exchanger 20 through the second opening / closing valve 25,
Are connected to the heat storage heat exchanger 20 via the heat storage side expansion valve 27, respectively.

The first connection end 21 is connected to the discharge port 12 of the outdoor unit 1 and communicates with the discharge pipe 15. The second connection end 24 is a dedicated suction port 1 of the outdoor unit 1.
4 and communicates with a dedicated suction pipe 15. Third
The connection end 26 is connected to the liquid pipe 10 of the inter-unit pipe 9.

The control device 30 and the controller 50 are connected via a communication line P10.

In an air conditioning system having such a configuration, cooling operation is stopped and ice heat storage is performed using the heat storage unit 19, for example, on a summer night.

That is, the refrigerant discharged from the compressor 2 receives the check valve 28, the four-way valve 3, the outdoor heat exchanger 4, the outdoor expansion valve (fully open) 5, the liquid receiver 6, The heat storage side expansion valve 27 of the heat storage unit 19, the heat storage heat exchanger 20,
It circulates repeatedly to return to the on-off valve 25, the gas-liquid separator 7, and the compressor 2. Thus, the outdoor heat exchanger 4 functions as a condenser, and the heat storage heat exchanger 20 functions as an evaporator.

With the ice obtained by the operation described above,
Cooling operation is performed in the afternoon in summer.

That is, during the cooling operation using the ice heat storage unit 19, the refrigerant discharged from the compressor 2 is supplied to the check valve 28 and the first heat storage unit 19 of the ice heat storage unit 19 as shown by solid arrows in FIG.
It is circulated repeatedly to return to the on-off valve 22, the heat storage heat exchanger 20, the heat storage side expansion valve 27, the indoor expansion valve 18, the indoor heat exchanger 17, the four-way valve 3, the gas-liquid separator 7, and the compressor 2. .
Thus, the heat storage heat exchanger 20 functions as a condenser, and the indoor heat exchanger 17 functions as an evaporator, thereby cooling the room.

If the heat of the heat storage unit 19 has been used up, the first on-off valve 22 and the heat storage side expansion valve 27 are closed to stop using the ice heat storage unit 19. As a result, the refrigerant discharged from the compressor 2 receives the check valve 28, the four-way valve 3, the outdoor heat exchanger 4, the outdoor expansion valve 5, the liquid receiver 6, and the indoor expansion valve 18 as shown by the broken arrows. Circulates repeatedly to return to the indoor heat exchanger 17, the four-way valve 3, the gas-liquid separator 7, and the compressor 2. As described above, the combined use of ice heat storage and an air-cooled heat exchanger (outdoor heat exchanger) allows about 40
It is considered that the power consumption of the power consumption of% is saved.

On the other hand, in a winter night or the like, the heating operation is stopped and the hot water storage for heating can be performed using the heat storage unit 19.

That is, the refrigerant discharged from the compressor 2 is supplied to the check valve 28, the first opening / closing valve 22 of the heat storage unit 19, the check valve 23, and the heat storage heat exchanger as shown by the one-dot broken line arrow in FIG. 20, circulating repeatedly to return to the receiver 6, the outdoor expansion valve 5, the outdoor heat exchanger 4, the four-way valve 3, the gas-liquid separator 7, and the compressor 2 of the outdoor unit 1.

By the above-described operation, hot water heat storage is performed during the winter night, and in the winter daytime, the heating operation is performed using the hot water heat storage.

That is, during the heating operation using the ice heat storage unit 19, the refrigerant discharged from the compressor 2 is supplied to the check valve 28, the four-way valve 3, and the indoor heat exchanger 17 as shown by a one-dot broken line arrow in FIG. , Indoor side expansion valve 18, heat storage side expansion valve (full open) 27 of heat storage unit 19, heat storage heat exchanger 20, second on-off valve 2
5, circulating repeatedly to return to the gas-liquid separator 7 and the compressor 2. As a result, the indoor heat exchanger 17 becomes a condenser,
The heat storage heat exchanger 20 acts as an evaporator to heat the room.

Here, the heating operation using the heat storage unit 19 is determined by the heat energy of the heat storage unit 19, and is considered to be about 10 hours. Therefore, when the heating operation using the heat storage unit 19 exceeds 10 hours, the heat storage side expansion valve 27 is closed and the heat storage unit 19 is stopped.

As a result, the refrigerant discharged from the compressor 2 is supplied to the check valve 28, the indoor heat exchanger 17, the indoor expansion valve 18, and the receiver 6 of the outdoor unit 1 as shown by the broken arrows in FIG. Circulates repeatedly to return to the outdoor expansion valve (fully open) 5, outdoor heat exchanger 4, four-way valve 3, gas-liquid separator 7, and compressor 2.

Thus, the indoor heat exchanger 17 functions as a condenser and the outdoor heat exchanger 4 functions as an evaporator, and heats the room. As described above, the indoor heating is performed by using the heat storage and the air-cooled heat exchanger (the outdoor heat exchanger 4) in combination.

Here, the function of the controller 50 of the heat storage unit 19 will be described. The controller 50 sets the operation schedule for the operation start time and the stop time of the heat storage unit and for each day of the week. Normally, when the product of the controller 50 is shipped, the initial value is set, and the contractor sets the operation time period of the heat storage unit 19 based on the night power contract contracted between the user and the power company. I was

FIG. 2 is an air conditioning system showing an embodiment of the present invention.

The air conditioning system group G1 includes an outdoor unit A1, a heat storage unit B1, and three or more indoor units (D11 to D13, etc.).

The air conditioning system group G2 includes an outdoor unit A2, a heat storage unit B2, and three or more indoor units (D21 to D23, etc.).

The air conditioning system group G3 includes an outdoor unit A3, a heat storage unit B3, and three or more indoor units (D31 to D33, etc.).

The outdoor units (A1 to A3) are the outdoor units 1 shown in FIG.
Is 19 shown in FIG. 1, and the indoor units (D11 to D11)
Reference numeral 33) denotes 16 shown in FIG.

In FIG. 2, the air conditioning system group
It is shown in one group, but may be more.

Each unit of each group (G1 to G3) is connected to a nonpolar 2-core communication line T1 to T3, respectively, and further connected to a system controller S1 for centrally controlling and controlling the entire air conditioning system by a communication line T0. .

The heat storage units (B1 to B3) of each group (G1 to G3) are connected to one controller C10 by a nonpolar two-core communication line P10 to centrally manage the heat storage units (B1 to B3). Controlling.

FIG. 3 shows a controller 50 of the heat storage unit 19 according to the present invention.
An LED 2 indicates that the timer is running. 53 is an operation unit of the controller. Reference numeral 60 denotes an operation switching button, which sets the operation mode of the heat storage unit to “automatic”, “ice making”,
Switch to "hot water" operation mode. Here, the “automatic” operation mode includes an ice heat storage operation at an outside air temperature of 18 ° C. or higher, a hot water heat storage operation at a temperature lower than 13 ° C., and a hot water heat storage operation or an ice heat storage operation at 13 ° C. to 18 ° C. according to the previous night heat storage operation mode. Do.

A button 61 is used to confirm the setting of the timer.
Reference numeral 62 denotes a service check button.

Buttons 63 to 65 are used to set a timer. 63 is for setting the day of the week, 64 is for setting the hour, and 65 is for setting the minute. A button 66 starts a timer setting. Reference numeral 67 denotes a button for selecting a heat storage unit to be set when a plurality of heat storage units are connected. 6
Reference numeral 8 denotes a button for setting the timer, reference numeral 71 denotes a cancel button, and the timer is enabled at 69 and the timer is invalidated at 70.

As a method of setting the timer, for example, a case where the heat storage unit B1 is set will be described. First, the invalidation button 70 is pressed to stop the program timer.
Press the setting button 66 for more than 2 seconds to enter the setting mode,
The “Setting” indicator flashes and a “selection mark” is displayed below the day of the week. Next, the unit selection button 67 is pressed to select the system 1 and the unit 31, and the operation start time display blinks. Therefore, the hour start button 64 and the minute button 65 are set to set the operation start time, and the set button 68 is pressed. The operation cutoff time display flashes, so make settings in the same way as the entry time. Further, to set the driving day, the day button 63
Each time is pressed, the flashing of the “selection mark” changes like “Sun → Mon → Tues → Wed → Thu → Fri → Sat → Sun”, so press the set button 68 at the position of the day you want to drive and press the The "setting mark" is lit on the upper side, and the cancel button 71 is pressed on the day of the week when the user does not want to drive, and the "setting mark" is turned off.
Finally, when the setting button 66 is pressed, the setting mode ends, and the set program timer set time and day of the week disappear. When the timer enable button 69 is pressed, the program timer lamp is turned on, and the timer operation is started.

Although the present invention has been described based on the above-described embodiment, the present invention is not limited to this.

[0051]

As described above, according to the first aspect of the present invention, centralized control can be performed by one controller on a communication line connecting a plurality of heat storage units. As compared with the case where a controller (remote controller and weekly timer) is required for each heat storage unit, it is possible to realize an air conditioning system that is excellent in user operability and reduced in cost.

According to the second aspect of the present invention, since the operation time of the heat storage unit can be set for one week in one day unit, it is possible to provide timer setting means which is highly convenient for the user.

According to the third aspect of the present invention, as a method of canceling the timer operation of the heat storage unit on a specific day,
Since the corresponding day is set as a holiday, it is possible to provide timer setting means with high operability and convenience for the user.

According to the fourth aspect of the present invention, since the operation for matching the operation state of the air conditioning system with the contents of the timer setting can be performed only by operating the enable / disable button, it is convenient for the user. It is possible to provide a highly controllable control means.

[Brief description of the drawings]

FIG. 1 is a refrigerant circuit diagram of an air conditioning system according to the present invention.

FIG. 2 is a block configuration diagram of an air conditioning system showing an embodiment of the present invention.

FIG. 3 is a state diagram showing a controller 50 of the heat storage unit 19 according to the present invention.

FIG. 4 is a block configuration diagram of a conventional air conditioning system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outdoor unit (heat source side unit) 2 Compressor 4 Outdoor heat exchanger (heat source side heat exchanger) 16 Indoor unit (use side unit) 17 Indoor heat exchanger (use side heat exchanger) 19 Ice heat storage unit 20 Ice heat storage Heat exchanger 28 hot water supply unit 29 hot water supply heat exchanger 53 controller

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Keiji Wada 1 Otsukicho, Ashikaga-shi, Tochigi Sanyo Electric Air Conditioning Co., Ltd. F-term (reference) 3L060 AA08 CC08 DD08 EE21 EE45 3L061 BA03 BA04 BA05 BA06 BB01 BB03 3L092 TA16 UA04 UA31 UA34 VA02 VA07 WA05 WA15 XA40 YA16 YA20

Claims (4)

[Claims] A plurality of groups of air conditioners are connected on the same communication line, each group is composed of at least an indoor unit and a heat storage unit, and each indoor unit in each group is operated by a control device. In the management system, the control device controls the heat storage units of each group by one unit, and also performs a timer setting procedure for determining an operation time. 2. The air conditioner control device according to claim 1, wherein the operation start time and the end time can be set in units of one day, and the operation management can be performed for one week. Air conditioning system controller. 3. The air-conditioning system control device according to claim 1, wherein by setting a specific day of each week of a week as a holiday, it is possible to set that the air-conditioning system is not operated on the specific day. The control device of the air-conditioning system that was characterized. 4. The control device for an air conditioning system according to claim 1, further comprising an enable / disable button for a timer setting procedure.
A control device for an air conditioning system, characterized in that when the effective button is turned on, the operation state is matched with the operation content set by the timer, and when the invalid button is turned on, the air conditioning system is completely stopped.