JPH11304225A - Air conditioner and indoor air conditioning control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce energy consumption of air conditioning facility by performing operation control corresponding to ventilating operation mode prior to normal air conditioning operation mode. SOLUTION: A decision is made whether the time of sunrise has reached or not (n1) based on a time measurement data and a time data of sunrise. If it has reached, a decision is made whether the outer air temperature is lower than the indoor temperature or not (n2) by comparing the temperature detected by an outer air temperature sensor and an indoor sensor. If the outer air temperature is lower, normal ventilating operation is performed (n3) and a decision is made whether the outer air temperature has matched the indoor temperature or not (n4). If it has matched, normal operation for taking in the outer air is stopped (n5). Furthermore, starting time of cooling air supply operation is calculated based on the difference from an optimal set temperature in the office (n6) and a decision is made whether the starting time has reached or not (n7) and cooling air supply operation is started (n8) if it is reached.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an air conditioner and an indoor air conditioning control system using the same.

[0002]

2. Description of the Related Art FIG. 4 is a schematic diagram of a conventional indoor air-conditioning control system, which air-conditions an office 1, for example, and includes an outside air intake fan 2 for taking outside air into the office. Heat source equipment 3 such as refrigerators
And an air conditioner 4 that generates cold air by heat exchange with cold water from a heat source device 3, a room temperature sensor 5 that detects an indoor temperature of the office 1, and a detection temperature of the room temperature sensor 5 is set to a preset temperature. And a control device 10 for controlling the air conditioning equipment.

In such an air-conditioning system, when performing a cooling air blowing operation, which is a normal air-conditioning operation mode, the building itself is warmed up in summer, so that the air-conditioning equipment is driven before starting the operation, and the cold air is blown in advance. Need to be cooled down.

[0004]

That is, assuming that the office operation start time is, for example, 9:00 am, it is necessary to preliminarily operate the air conditioner from, for example, about 8:00 am to generate cool air before that. In this case, a considerable amount of energy is used to drive the heat source device 3 and the air conditioner 4, and the cost is increased accordingly.

[0005] The present invention has been made in view of the above points, and has as its object to reduce energy consumption in air conditioning equipment.

[0006]

In order to achieve the above-mentioned object, the present invention is configured as follows.

That is, the air conditioner of the present invention according to claim 1 is
It has a normal air-conditioning operation mode and a ventilation operation mode, and based on an input related to detection of the room temperature and the outside air temperature or an input related to the arrival of a predetermined time when the outside air temperature is lower than the room temperature. An operation control corresponding to the ventilation operation mode can be performed prior to a normal air conditioning operation mode.

According to a second aspect of the present invention, there is provided an indoor air-conditioning control system having a detecting means for detecting an indoor temperature and an outside air temperature, a predetermined air-conditioning operation mode and a ventilation operation mode, and based on an output of the detecting means. An air conditioner that performs the ventilation operation prior to the normal air conditioning operation.

According to a third aspect of the present invention, there is provided an indoor air-conditioning control system, comprising: data output means for outputting data relating to the arrival of a predetermined time at which the outside air temperature becomes lower than the indoor temperature; And an air conditioner that performs the ventilation operation prior to the normal air conditioning operation based on the output of the data output means.

According to a fourth aspect of the present invention, there is provided an indoor air-conditioning control system, comprising: detecting means for detecting an indoor temperature and an outdoor temperature; and data for outputting data relating to the arrival of a predetermined time when the outdoor temperature is lower than the indoor temperature. Output means, an air conditioner having a normal air-conditioning operation mode and a ventilation operation mode, and control means for controlling each of the two modes for the air conditioner based on outputs of the detection means and the data output means, respectively. It is characterized by:

Further, the indoor air-conditioning control system according to a fifth aspect of the present invention, in the configuration according to the fourth aspect, includes time-measuring means for measuring an arbitrary time as an operation start time of the air conditioner. It is characterized in that data of the sunrise time of each day in the year is stored, and the control means controls the start of the operation of the air conditioner according to the time measured by the time measuring means.

According to the air conditioner of the first aspect of the present invention, the air conditioner is normally operated based on an input relating to detection of the indoor temperature and the outdoor temperature or an input relating to the arrival of a predetermined time when the outdoor temperature becomes lower than the indoor temperature. Since the operation control corresponding to the ventilation operation mode can be performed prior to the air conditioning operation mode, the ventilation operation is performed by taking in the outside air when the outside air temperature is low based on any of the inputs. Energy consumption can be reduced as compared with the conventional example in which the cool air blowing operation is performed without performing the operation.

According to a second aspect of the present invention, the indoor air conditioning control system has a detecting means for detecting an indoor temperature and an outside air temperature, a predetermined air conditioning operation mode and a ventilation operation mode,
Since it has an air conditioner that performs the ventilation operation prior to the normal air conditioning operation based on the output of the detection means,
When the outside air temperature is low based on the output of the detection means,
By performing the ventilation operation that takes in outside air, energy consumption can be reduced as compared with the conventional example in which the cool air blowing operation is performed without performing the ventilation operation.

According to the third aspect of the indoor air conditioning control system of the present invention, data output means for outputting data relating to the arrival of a predetermined time when the outside air temperature becomes lower than the indoor temperature,
An air conditioner that has a normal air-conditioning operation mode and a ventilation operation mode, and performs the ventilation operation prior to the normal air-conditioning operation based on the output of the data output unit. Therefore, when the outside air temperature is low, the ventilation operation for taking in the outside air is performed, whereby the energy consumption can be reduced as compared with the conventional example in which the cool air blowing operation is performed without performing the ventilation operation.

According to the fourth aspect of the present invention, a detecting means for detecting the indoor temperature and the outside air temperature, and outputting data relating to the arrival of a predetermined time when the outside air temperature becomes lower than the indoor temperature. Data output means, and an air conditioner having a normal air conditioning operation mode and a ventilation operation mode,
Control means for controlling the air conditioner in each of the two modes based on the outputs of the detection means and the data output means, so that the outside air temperature is controlled based on the output of the detection means and the output of the data output means. When the air temperature is low, energy consumption can be reduced by performing the ventilation operation for taking in outside air, as compared with the conventional example in which the cool air blowing operation is performed without performing the ventilation operation.

According to the fifth aspect of the indoor air conditioning control system of the present invention, there is provided a timekeeping means for counting an arbitrary time as the operation start time of the air conditioner, and the timekeeping means is provided with a sunrise for each day in the year. Since the time data is stored, and the control means controls the start of the operation of the air conditioner according to the time measured by the time measuring means, the outside air around the sunrise time when the temperature is the lowest is efficiently taken in. Room temperature can be reduced.

[0017]

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

FIG. 1 is a schematic configuration diagram of an indoor air-conditioning control system according to one embodiment of the present invention. This system air-conditions an office 1 and takes in outside air into the office. An intake fan 2, a heat source device 3 such as a refrigerator, an air conditioner 4 that generates cold air by heat exchange with cold water from the heat source device 3, a room temperature sensor 5 that detects an indoor temperature of the office 1, and an outside air temperature. An outside air temperature sensor 7 to be detected, a calendar means 8 as a data output means for measuring the current month and day and time, and storing data of a sunrise time corresponding to a month and day of one year;
A control unit 9 comprising a microcomputer for controlling each unit based on the outputs of the sensors 5 and 7 and the data of the calendar means 8 is provided.

In the conventional air conditioning system, in summer, at 9 am, which is the office start time, a heat source is started in advance from, for example, about 8 am so that cold air can be sent into the office in the normal air conditioning operation mode. Drives equipment and air conditioners.

In this embodiment, the air conditioning system is configured as follows in order to reduce energy consumption.

That is, in this embodiment, prior to the cold air blowing operation, which is a normal air conditioning operation mode for driving the heat source device 3 and the air conditioner 4, the outside air temperature detected by the outside air temperature sensor 7 constituting the detecting means. And the room temperature detected by the room temperature sensor 5, and when the outside air temperature is low,
Driving the outside air intake fan 2 to perform ventilation operation without heat exchange for taking in outside air, that is, so-called outside air cooling.

In general, it is known that the temperature of outside air in summer becomes the lowest immediately after the time of sunrise, and therefore,
In this embodiment, the outside air temperature and the indoor temperature are compared at the sunrise time corresponding to the current month and day, based on the sunrise time data for the current year stored in the calendar means 8 described above. When the outside air temperature is lower than the room temperature, ordinary ventilation operation, which is a ventilation operation mode, is performed prior to the cool air blowing operation.

FIG. 2 is a flowchart for explaining the operation of the system having the above configuration.

Based on the timekeeping data and the sunrise time data of the calendar means 8, the sunrise time, that is,
It is determined whether or not the hour and the minute of the month and day have been reached (step n1). When the time of sunrise has come, the detected temperatures of the outside air temperature sensor 7 and the room temperature sensor 5 are compared to determine whether the outside air temperature is indoors. It is determined whether the temperature is lower than the temperature (step nn2),
When the outside air temperature is lower than the room temperature, the outside air intake fan 2 is driven to perform a normal ventilation operation without performing heat exchange (step n3), and it is determined whether or not the outside air temperature matches the room temperature. Then, when the outside air temperature matches the room temperature (step n4), the outside air intake fan 2 is stopped to stop the ordinary ventilation operation for taking in outside air (step n5).

Further, based on a temperature difference between the matched temperature and a preset temperature which is a preset optimum temperature of the workplace, the driving of the heat source device 3 and the air conditioner 4 is started from a table of a memory prepared in advance. Is calculated, that is, the start time of the cool air blowing operation is calculated (step n6), and it is determined whether or not the start time is reached (step n7). It drives to start the cool air blowing operation (step n8). The operation after the start of the cool air blowing operation is the same as in the conventional example. For example, the cool air blowing operation is stopped at the end time of the job, and the same operation as described above is performed at the sunrise time of the next day.

The memory table is prepared in advance based on the capacity of the air conditioning equipment and the experience so far, and corresponds to the temperature difference and the time of the cool air blowing operation required to eliminate the temperature difference. Indicates a relationship, for example,
At a temperature difference of 1 ° C, cold air blowing operation for 10 minutes, 2 ° C
If the temperature difference is, it is necessary to perform the cold air blowing operation for 20 minutes, and a time earlier than 9:00 am, which is the work start time, is calculated as the start time of the cold air blowing operation for the required time. become.

In step n2, when the room temperature is lower than the outside air temperature, as in the conventional case, the process waits until the operator operates the cool air blowing operation start switch (step n9).

As described above, before the cold air blowing operation which is the normal air-conditioning operation mode, the outside air temperature immediately after sunrise and the room temperature are compared, and when the outside air temperature is low, cool outside air is taken in without performing heat exchange. Since the normal ventilation operation is performed, the energy required for cooling to the optimum set temperature can be reduced as compared with the conventional example in which the cool air blowing operation is performed without performing the normal ventilation operation.

For example, in the conventional example, it was necessary to start the cold air blowing operation about one hour before 9:00 am of the business start time, whereas according to this embodiment, for example, It is only necessary to start the cool air blowing operation 20 minutes before, so that the cost can be saved.

In particular, during the night from 11:00 pm to 7:00 am, the electricity bill is reduced to 1/4 to 1/5 compared to other hours.
Compared to the conventional example in which cooling is performed at a stretch from around 8:00 am, it is possible to save costs as a whole by taking in outside air immediately after sunrise and delaying the start time of the cool air blowing operation.

In this embodiment, the normal ventilation operation prior to the cool air blowing operation is performed when a mode for outside air cooling for performing the normal ventilation operation is manually set in advance in a summer period. However, as another embodiment of the present invention, a summer period from what day to what month is set in advance, and outside air cooling is performed according to the above-described flowchart during the set summer period. You may do so.

Further, as another embodiment of the present invention, in an intermediate period such as spring or autumn, even if the outside air temperature is lower than the indoor temperature, the indoor temperature is lower than the preset temperature. In such a case, it is not necessary to perform outside air cooling. Therefore, as shown in the flowchart of FIG. 3, it is determined whether or not the room temperature is lower than the set temperature (step n10). When the temperature is low, the operator may wait until the operator operates the cool air blowing operation start switch.

As shown in FIG. 3, when the room temperature is lower than the outside air temperature, it is determined whether or not the room temperature is lower than the set temperature (step n11). When the temperature is higher than the temperature, the process proceeds to Step n6, and based on the temperature difference between the room temperature and the set temperature, the time when the driving of the heat source device 3 and the air conditioner 4 is started from the table prepared in advance, that is, the cold air blowing operation. It is also possible to calculate the start time and wait until that time.

In the above embodiment, the outside air temperature and the room temperature immediately after the sunrise were compared. However, the outside air temperature and the room temperature were not changed around the time of the sunrise, for example, within about 30 minutes before and after the time of the sunrise. In another embodiment of the present invention, not only the sunrise time but also, for example, a comparison between the outside air temperature and the indoor temperature around 7:00 am, which is two hours before the work start time, is performed. In this case, the calendar means 8 can be omitted.

Further, in the above-described embodiment, the outside air cooling is performed when the outside air temperature is low by comparing the outside air temperature with the indoor temperature. During a predetermined period, outside air cooling may be performed at the time of sunrise without comparing the outside air temperature with the room temperature.

In the above embodiment, the normal ventilation operation is
Although the operation was performed until the room temperature matched the outside air temperature, as another embodiment of the present invention, the normal ventilation operation may be stopped before the room temperature matches.

[0037]

As described above, according to the present invention, the normal input based on the input relating to the detection of the room temperature and the outside air temperature or the input relating to the arrival of a predetermined time when the outside air temperature becomes lower than the room temperature is obtained. Since the operation control corresponding to the ventilation operation mode can be performed prior to the air conditioning operation mode, when the outside air temperature is low, the ventilation operation to take in the outside air is performed, so that the cool air blowing operation is performed without performing the ventilation operation. Energy consumption can be reduced as compared with the conventional example.

Further, since the start of the operation of the air conditioner is controlled based on the data of the sunrise time, the indoor temperature can be efficiently lowered by taking in the outside air around the sunrise time when the temperature is the lowest.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an air conditioning system according to one embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of FIG. 1;

FIG. 3 is a flowchart for explaining the operation of another embodiment of the present invention.

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

[Explanation of symbols]

 2 outside air intake fan 3 heat source device 4 air conditioner 5 room temperature sensor 6 air conditioning control device 7 outside temperature sensor 8 calendar means 9 control unit

Continuing on the front page (72) Inventor Yasuhiro Miyamoto Kyoto, Kyoto, Japan

Claims (5)

[Claims] 1. An air conditioning operation mode and a ventilation operation mode, and an input relating to detection of an indoor temperature and an outside air temperature or an arrival of a predetermined time when the outside air temperature becomes lower than the indoor temperature. An air conditioner capable of performing operation control corresponding to the ventilation operation mode prior to the normal air conditioning operation mode based on an input. 2. An air conditioner according to claim 1, further comprising: detecting means for detecting an indoor temperature and an outside air temperature; and a predetermined air-conditioning operation mode and a ventilation operation mode. An indoor air-conditioning control system, comprising: 3. A data output means for outputting data relating to the arrival of a predetermined time at which the outside air temperature becomes lower than the room temperature; and a normal air-conditioning operation mode and a ventilation operation mode. An air conditioner that performs the ventilation operation prior to the normal air conditioning operation based on the following. Detecting means for detecting the indoor temperature and the outside air temperature; data output means for outputting data relating to the arrival of a predetermined time when the outside air temperature is lower than the indoor temperature; An indoor air-conditioning control system, comprising: an air conditioner having an operation mode; and control means for controlling each of the two modes of the air conditioner based on outputs of the detection means and the data output means. 5. The indoor air-conditioning control system according to claim 4, further comprising a timer for counting an arbitrary time as an operation start time of the air conditioner, wherein the timer measures sunrise time of each day in the year. Of the data, and
The indoor air-conditioning control system according to claim 1, wherein the control means controls the start of the operation of the air conditioner according to the time measured by the time measuring means.