JP2018004153A - Air conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem found in a case where reduction requests of power consumption different from each other are given to each of a plurality of indoor units, that which reduction ratio of a reduction request is used to control the indoor unit, cannot be discriminated.SOLUTION: An air conditioning system 1 having a plurality of indoor units 3 connected to an outdoor unit 2, is controlled to reduce power consumption on the basis of a reduction request in a case where any of the plurality of reduction requests having reduction ratio of power consumption reduction requests different from each other, is given to any of the plurality of indoor units 3, and the indoor units 3 include display portions 6 for displaying the reduction ratio of the reduction request.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an air conditioning system having a plurality of indoor units connected to an outdoor unit.

2. Description of the Related Art Conventionally, there is an air conditioner that is controlled so that power consumption is reduced based on a reduction rate of the reduction request when there is a reduction request for power consumption from a controller.

WO2014-24443

In an air conditioning system having a plurality of indoor units connected to an outdoor unit, there is a case where there is a request for reducing power consumption different from each other for each of the plurality of indoor units.

In this case, some indoor units may be controlled based on a reduction request supplied to other indoor units. At that time, the indoor unit is controlled based on the reduction ratio of any reduction request. There is a problem that cannot be determined.

  Therefore, an object of the present invention is to provide an air conditioning system that can determine which of the reduction requests is controlled according to the reduction ratio.

  An air conditioning system according to a first aspect of the present invention is an air conditioning system having a plurality of indoor units connected to an outdoor unit, wherein a reduction in power consumption reduction request is made for any of the plurality of indoor units. When any of a plurality of types of reduction requests having different ratios is supplied, the power consumption is controlled based on the reduction request, and the indoor unit displays a reduction ratio of the reduction request Means are provided.

  In this air conditioning system, the display unit of the indoor unit displays the reduction ratio of the reduction request based on the control at that time, so that it is possible to determine which of the reduction requests is controlled according to the reduction ratio.

  An air conditioning system according to a second invention is characterized in that, in the first invention, the luminance of the display means changes in accordance with a reduction ratio of the reduction request.

  In this air conditioning system, the luminance of the display unit of the indoor unit changes according to the reduction ratio of the reduction request, so that the reduction ratio of the reduction request based on the control at that time can be easily determined.

  An air conditioning system according to a third invention is characterized in that, in the first or second invention, the luminance of the display means continuously changes in accordance with the reduction ratio of the reduction request.

  In this air conditioning system, the brightness of the display unit of the indoor unit changes according to the reduction ratio of the reduction request, so that the reduction ratio of the reduction request based on the control at that time can be easily determined.

  As described above, according to the present invention, the following effects can be obtained.

  In the first aspect of the invention, the display unit of the indoor unit displays the reduction ratio of the reduction request based on the control at that time, so that it is possible to determine which of the reduction requests is controlled according to the reduction ratio.

  In the second invention, the luminance of the display means of the indoor unit changes according to the reduction ratio of the reduction request, whereby the reduction ratio of the reduction request based on the control at that time can be easily determined.

  In the third aspect of the invention, the brightness of the display means of the indoor unit changes according to the reduction ratio of the reduction request, so that the magnitude of the reduction ratio of the reduction request based on the control at that time can be easily determined.

It is a figure which shows the structure of the air conditioning system of 1st Embodiment of this invention. It is a figure which shows the structure of the control part of the air conditioning system of FIG. FIG. 2 is a control flow diagram when a power consumption reduction request is supplied in the air conditioning system of FIG. 1.

  Hereinafter, embodiments of the present invention will be described in detail.

(First embodiment)
[Overall configuration of air conditioner]
As shown in FIG. 1, the air conditioning system 1 of the present embodiment includes an outdoor unit 2 and a plurality of indoor units 3 connected to the outdoor unit 2 (in FIG. 1, three indoor units 3 are illustrated. In the present invention, the plurality of indoor units 3 may include two or four or more. Each of the plurality of indoor units 3 has a controller 4, and the operation is controlled based on an operation signal supplied from the controller 4. The operation signal supplied from the controller 4 includes an operation signal for starting operation, an operation signal for stopping operation, an operation signal for supplying a power consumption reduction request, and the like.

  In the air conditioning system 1 of the present embodiment, when a power consumption reduction request is supplied from any one of the plurality of indoor units 3 from the controller 4, the air conditioning system 1 is configured according to the reduction ratio of the reduction request. The upper limit of the current used is limited. The reduction ratio of the reduction request is the ratio of the current upper limit value when the reduction request is supplied to the normal current upper limit value when the reduction request is not supplied (current upper limit value when the reduction request is supplied / reduction Normal current upper limit value when no request is supplied). Therefore, the reduction ratio of the reduction request is a value between 0 and 1, and the power consumption can be reduced as the reduction ratio is smaller. In the present embodiment, it is possible to supply the indoor unit 3 from the controller 4 with a reduction request for a two-stage reduction rate. The reduction request of the two-stage reduction ratio is limited so as not to exceed the first upper limit value a1 lower than the upper limit value of the current at the normal time (first reduction request), and the second lower than the first upper limit value a1. This is a case where the upper limit value a2 is not exceeded (second reduction request).

  Therefore, the user can supply the first reduction request or the second reduction request to each of the plurality of indoor units 3 by operating the controller 4. Therefore, when the first reduction request is supplied to the indoor unit 3, the drooping control of the frequency of the compressor 5 is performed so that the current used in the air conditioning system 1 does not exceed the first upper limit value. Similarly, when the second reduction request is supplied to the indoor unit 3, the drooping control of the frequency of the compressor 5 is performed so that the current used in the air conditioning system 1 does not exceed the second upper limit value.

  Each of the plurality of indoor units 3 has a display unit 6. The display unit 6 displays that a reduction request is supplied and control is performed so that power consumption is reduced based on the reduction request. The display unit 6 displays the reduction rate of the reduction request at that time, and the luminance of the display unit 6 changes according to the reduction rate of the reduction request.

  As shown in FIG. 2, the outdoor unit 2 has a control unit 2a, and the indoor unit 3 has a control unit 3a. In the control units 2a and 3a, various operations are performed in order to generate a ROM storing control programs and data of various operations related to the air conditioning system 1, and signals for controlling the operations of the respective units of the air conditioning system 1. The CPU includes members such as a RAM that temporarily stores data such as various settings and calculation results of the CPU. By these various members and software, as shown in FIG. 1, the control unit 2a is formed with a storage unit 2b, a selection unit 2c, and an operation control unit 2d, and the control unit 3a has a storage unit 3b, A display control unit 3c is formed. The control unit 2a is connected with a compressor 5 or the like disposed inside the outdoor unit 2, and the control unit 3a is connected with a display unit 6 or the like on the surface of the indoor unit 3.

  In the present embodiment, a power consumption reduction request is supplied from the controller 4 to the indoor unit 3, but the reduction request is supplied from the control unit 3 a of the indoor unit 3 to the control unit 2 a of the indoor unit 2. Therefore, in the control unit 2 a of the outdoor unit 2, when the power consumption reduction request is supplied from the controller 4, the storage unit 2 b stores the reduction request. Therefore, the storage unit 2 b stores the reduction ratio of the reduction request supplied from the controller 4 for the plurality of indoor units 3.

  When a plurality of reduction requests corresponding to different reduction ratios are supplied from the controller 4 to the plurality of indoor units 3, the selection unit 2c selects one of the plurality of reduction requests. In the present embodiment, the selection unit 2c selects a reduction request that minimizes power consumption among a plurality of reduction requests. In the present embodiment, when a reduction request that minimizes power consumption is selected in the selection unit 2c, the reduction request is supplied to the control unit 3a of the indoor unit 3.

  The operation control unit 2d controls the compressor 5 and the like based on the reduction ratio of the reduction request selected by the selection unit 2c. Specifically, when the reduction request selected by the selection unit 2c is the first reduction request, the operation control unit 2d performs control so that the current used in the air conditioning system 1 does not exceed the first upper limit value a1. When the reduction request selected by the selection unit 2c is the second reduction request, control is performed so that the current used in the air conditioning system 1 does not exceed the second upper limit value a2.

  In the present embodiment, the control based on the reduction ratio of the reduction request selected by the selection unit 2c is released when a predetermined time has elapsed after the reduction request is supplied. Therefore, when the control based on the reduction ratio corresponding to the reduction request is released when a predetermined time has elapsed, the upper limit value of the current used in the air conditioning system 1 is changed to the normal upper limit value. This predetermined time is determined in advance.

  In the control unit 3a of the indoor unit 3, when the controller 4 receives a power consumption reduction request from the controller 4, the storage unit 3b stores the reduction request. Therefore, the storage unit 3b stores the reduction ratio of the reduction request supplied from the controller 4 for the indoor unit 3. As described above, in the present embodiment, when a request for reducing power consumption is supplied from the controller 4 to the indoor unit 3, the reduction request is supplied to the control unit 2 a of the outdoor unit 2. Then, in the control unit 2a, the reduction request supplied from the indoor unit 3 is stored in the storage unit 2b. Therefore, when a plurality of reduction requests are supplied from the plurality of indoor units 3 in the control unit 2a of the outdoor unit 2, the plurality of reduction requests are stored in the storage unit 2b.

  When the reduction request selected by the selection unit 2c is supplied from the outdoor unit 2, the display control unit 3c controls the luminance of the display unit 6 based on the reduction ratio of the reduction request. Specifically, the display control unit 3d controls the luminance of the display unit 6 to the first luminance when the reduction request supplied from the outdoor unit 2 is the first reduction request, and the reduction request supplied from the outdoor unit 2 Is the second reduction request, the luminance of the display unit 6 is controlled to the second luminance lower than the first luminance.

  In the present embodiment, the luminance of the display unit 6 is controlled to a luminance corresponding to the magnitude of the upper limit value of the current used in the air conditioning system 1. That is, when the luminance of the display unit 6 at the normal current upper limit value is 1, the luminance when the power consumption reduction request is supplied is a luminance between 0 and a1, and the reduction request It changes linearly (continuously) between 0 and 1 in accordance with the reduction ratio. Therefore, the luminance of the display unit 6 when the first upper limit value a2 is controlled to the luminance corresponding to the first upper limit value a1, and the luminance of the display unit 6 when the second upper limit value a2 is the second upper limit value a2. It is controlled to the brightness corresponding to. As described above, the display unit 6 of the indoor unit 3 is controlled to have higher luminance as the upper limit value of the current used in the air conditioning system 1 is larger, and is controlled to lower luminance as the upper limit value is smaller.

  FIG. 3 is a control flow diagram when a power consumption reduction request is supplied.

  First, in step S1, a power consumption reduction request is supplied to any one of the plurality of indoor units 3 in a state where a power consumption reduction request is not supplied to all of the plurality of indoor units 3. It is repeatedly determined whether or not it has been done. When the power consumption reduction request is supplied, the process proceeds to step S2.

  In step S2, the air conditioning system 1 is controlled so that the power consumption of the air conditioning system 1 is reduced based on the power consumption reduction request supplied to the indoor unit. Therefore, in step S3, the display unit 6 of the indoor unit 3 that is in the operating state is controlled to have a luminance corresponding to the reduction ratio of the reduction request supplied to the indoor unit 3, and air conditioning is performed based on the power consumption reduction request. Displays that the system 1 is controlled.

  Thereafter, in step S4, it is repeatedly determined whether or not a power consumption reduction request has been supplied to the other indoor units 3 (indoor units 3 other than the indoor unit 3 to which the power consumption reduction request has been supplied first). . When the power consumption reduction request is supplied to the other indoor units 3, the process proceeds to step S5.

  In step S <b> 5, it is determined whether the reduction rate of the reduction request supplied to the other indoor unit 3 later is smaller than the reduction rate of the reduction request previously supplied to the indoor unit 3. The reduction ratio of the reduction request previously supplied to the indoor unit 3 is the smallest reduction ratio in the reduction request supplied earlier than the reduction request supplied to the other indoor unit 3 later. This is the reduction rate of the reduction request.

  In step S5, when the reduction ratio of the reduction request supplied to the other indoor unit 3 after that is not the same as the reduction ratio of the reduction request previously supplied to the indoor unit 3, in step S6, the air conditioning system 1 The control based on the reduction request previously supplied to the indoor unit 3 is continued without changing the upper limit value of the current to be used. That is, if the control based on the reduction request previously supplied to the indoor unit 3 is changed to the control based on the reduction request supplied to another indoor unit 3 later, the air consumption is not reduced. The control of the harmony system 1 is not changed.

  In this case, since the control based on the reduction ratio of the reduction request previously supplied to the indoor unit 3 is not changed, the brightness of the display unit 6 of the indoor unit 3 in the operating state is not changed.

  On the other hand, in step S5, when the reduction rate of the reduction request supplied to the other indoor unit 3 later is small, the reduction rate of the reduction request previously supplied to the indoor unit 3 is air conditioning in step S7. The upper limit value of the current used in the system 1 is changed, and the control is changed to a control based on a reduction request supplied to another indoor unit 3 later. That is, when the control based on the reduction request supplied to the indoor unit 3 is changed to the control based on the reduction request supplied to another indoor unit 3 later, The control of system 1 is changed.

  In this case, the control based on the reduction ratio of the reduction request previously supplied to the indoor unit 3 is changed to the control based on the reduction ratio of the reduction request supplied to the other indoor unit 3 later. In step S <b> 8, the display unit 6 of the indoor unit 3 that is in the operating state is changed to a luminance that corresponds to the reduction ratio of the reduction request that is supplied to the other indoor units 3 later.

  After step S6 and step S8, the same processing as that after step S4 is repeated.

  As described above, in the present embodiment, the control based on the reduction ratio of the reduction request is released when a predetermined time has elapsed after the reduction request is supplied. Is omitted.

<Characteristics of the air conditioning system of this embodiment>
In the air conditioning system 1 of the present embodiment, the display unit 6 of the indoor unit 3 is controlled according to the reduction ratio of any reduction request by displaying the reduction ratio of the reduction request based on the control at that time. Can be determined.

  In the air conditioning system 1 of the present embodiment, the luminance of the display unit 6 of the indoor unit 3 changes according to the reduction ratio of the reduction request, so that the reduction ratio of the reduction request based on the control at that time can be easily determined. it can.

  As mentioned above, although embodiment of this invention was described based on drawing, it should be thought that a specific structure is not limited to these embodiment. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes meanings equivalent to the scope of claims for patent and all modifications within the scope.

  In the above-described embodiment, the case has been described in which the controller 4 can supply the reduction request for the two-stage reduction ratio to the indoor unit 3. However, the controller 4 for the indoor unit 3 is reduced by one step. A reduction request for a rate may be supplied, or a reduction request for a reduction rate of three or more stages may be supplied.

  Moreover, although the display part 6 demonstrated the case where the display part 6 displayed the reduction rate of the reduction request | requirement of power consumption by the change of the brightness | luminance, the display part 6 performed power consumption by methods other than the brightness | luminance. The reduction ratio of the reduction request may be displayed. Therefore, the configuration of the display unit 6 may be changed.

  By using the present invention, it is possible to determine which of the reduction requests is controlled according to the reduction ratio.

DESCRIPTION OF SYMBOLS 1 Air conditioning system 2 Outdoor unit 3 Indoor unit 6 Display part (display means)

Claims (3)

An air conditioning system having a plurality of indoor units connected to an outdoor unit,
When any of a plurality of reduction requests having different reduction ratios of the power consumption reduction request is supplied to any of the plurality of indoor units, the power consumption is reduced based on the reduction request. Controlled,
The air conditioner system, wherein the indoor unit includes display means for displaying a reduction ratio of the reduction request.   The air conditioning system according to claim 1, wherein the luminance of the display means changes according to a reduction ratio of the reduction request.   The air conditioning system according to claim 2, wherein the brightness of the display means continuously changes in accordance with a reduction ratio of the reduction request.

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