JP2012057915A - Air conditioning equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide air conditioning equipment having a further energy-saving effect without impairing comfortability.SOLUTION: The air conditioning equipment has a control device which performs such an operation control as to repeat the following respective mode switchings in the order: a cooling operation mode in which the cooling operation is performed such that a predetermined space is caused to have a preset temperature by means of an air conditioning device; a cooling operation stopping mode in which the predetermined space is caused to have the preset temperature according to the cooling operation mode, thereafter, the cooling operation by means of the air conditioning device is stopped until the temperature of the predetermined space becomes a first rising temperature raised by a prescribed amount than the preset temperature and, also, the operation of a fan in the air conditioning device and a cooling breeze fan disposed in the predetermined space apart from the air conditioning device are stopped; and a cooling breeze operation mode in which the predetermined space is caused to have the first rising temperature according to the cooling operation stopping mode, thereafter, further is caused to raise the temperature and the cooling operation by means of the air conditioning device is stopped until the predetermined space is caused to have second rising temperature and, while the fan in the air conditioning device is stopped as it is, the cooling breeze fan is actuated to generate an air flow in the predetermined space, wherein, when the predetermined space is caused to have the second rising temperature after the cooling breeze operation mode, the switching to the cooling operation mode is performed again.

Description

  The present invention relates to an air conditioning facility provided with an air conditioner that performs an air conditioning operation so that a predetermined space reaches a set temperature.

In the conventional air conditioning equipment, generally, the air conditioner is controlled to keep a predetermined space at a set temperature, and energy consumption is large.
On the other hand, in order to suppress energy consumption, the air conditioning apparatus performs a cooling operation so that the predetermined space becomes the set temperature, and after the predetermined space reaches the set temperature by the mode, the temperature rises higher than the set temperature. Air conditioning equipment has been proposed in which the controller performs intermittent cycle operation in which the cooling operation by the air conditioner is stopped until the first rising temperature is reached, and the fan in the air conditioner is also repeatedly switched. , See Patent Document 1).

JP-A-9-292149

In the air conditioning equipment proposed previously, the power consumption can be suppressed by the intermittent cycle operation of the air conditioner, but the comfort can be prevented.
However, in the present day, it is required to provide an air-conditioning facility with further energy saving effect for CO2 emission regulation.

  Accordingly, an object of the present invention is to provide an air-conditioning facility that solves the above-described problems and has a further energy saving effect without impairing comfort.

  According to a first characteristic configuration of the present invention, an air conditioner that performs an air conditioning operation so that a predetermined space reaches a set temperature is provided, and a cool air fan that generates an air current so as to feel a cool wind in the predetermined space is provided with the air conditioner. A cooling operation mode in which a cooling operation is performed so that the predetermined space is set to a set temperature by the air conditioner; and after the predetermined space reaches a set temperature by the cooling operation mode, The cooling operation by the air conditioner is stopped until the first temperature rises by a fixed amount, and at the same time, the cooling operation stop mode for stopping the operation of the fan in the air conditioner and the cool air fan, and a predetermined space by the cooling operation stop mode. After the temperature reaches the first rise temperature, the cooling operation by the air conditioner is stopped until the temperature rises further to reach the second rise temperature, and the inside of the air conditioner The cool air operation mode in which the cool air fan is operated while the fan is also stopped, and after the cool air operation mode, when the predetermined space reaches the second rising temperature, the air conditioner is switched to the cooling operation mode again, and the respective modes are sequentially switched. There is a control device that repeatedly controls the operation.

According to the first characteristic configuration of the present invention, when only a control device that performs intermittent cycle operation by an air conditioner is provided as in the above-described prior art, for example, when the set temperature is 26 ° C., 1 Raise the temperature to 27 ° C, stop the cooling operation by the air conditioner until it reaches 27 ° C, and also stop the fan in the air conditioner. In the case of the present invention, for example, the set temperature is set to 26 ° C. and the first rising temperature is set to 27 ° C., and at the same time the cooling operation by the air conditioner is stopped from 26 ° C. to 27 ° C. In the cooling operation stop mode in which the operation of the fan of the air conditioner and the cool air fan is stopped, the cooling operation by the air conditioner is performed until the second temperature rises from 27 ° C. to, for example, 28 ° C. Even if the fan in the air conditioner is stopped and the fan in the air conditioner is kept stopped, the cool air fan provided in the predetermined space is operated separately from the air conditioner in the cool air operation mode to generate airflow in the predetermined space. The air temperature generated by the cool air fan lowers the sensible temperature, making it feel cool and maintaining comfort.
Accordingly, until the temperature rises from the first rise temperature to the second rise temperature, only a small amount of electric power is consumed by the cool air fan provided in the predetermined space separately from the air conditioner. It became energy saving and came to be able to improve economy.
In addition, by providing a cool air fan in a predetermined space separately from the air conditioner, the air flow rate by the air conditioner and the air flow rate by the cool air fan can be set separately, so that no airflow is felt by the air conditioner fan during cooling operation. While cooling can be achieved, the cooling operation by the air conditioner can be stopped in the cool air operation mode, and the cool air can be fully felt by blowing with the cool air fan while the fan in the air conditioner is also stopped. , You can definitely get comfort.

  According to a second characteristic configuration of the present invention, a distributed installation type air conditioner that performs an air-conditioning operation so that the predetermined space reaches a set temperature is provided on the ceiling, and the cooling operation is performed by the air conditioner so that the predetermined space reaches the set temperature. The cooling operation by the air conditioner is stopped at the same time as the cooling operation mode and after the predetermined space reaches the set temperature by the cooling operation mode until the first rising temperature that is a predetermined amount higher than the set temperature is reached. A cooling operation stop mode for stopping the operation of the fan and a cooling operation by the air conditioner are stopped until the predetermined space reaches the first rising temperature and further rises to the second rising temperature by the cooling operation stop mode. The cool air operation mode for generating an air current so that the fan of the air conditioner is operated to feel a cool air feeling in a predetermined space, and after the cool air operation mode, Space is switched to the second elevated temperature to come if again the cooling operation mode, there is to that is provided with a sequential control device for repeatedly operating controls each mode switching thereof.

  According to the second characteristic configuration of the present invention, by providing a distributed installation type air conditioner on the ceiling, when there are a plurality of predetermined spaces to be air-conditioned, the fans of the air conditioner can be operated while being individually adjusted. By switching to the cool wind operation mode after the cooling operation stop mode, the electric power of the air conditioner fan is low even if the cooling operation by the air conditioner is not performed until the temperature rises from the first rise temperature to the second rise temperature. Only the amount consumed, the air temperature generated by the fan can lower the temperature of the sensation and maintain comfort. Therefore, as a whole, energy saving can be achieved as compared with the conventional air conditioning equipment, and the economy can be improved.

  The third characteristic configuration of the present invention is that the air volume is made larger in the cool air operation mode than in the cooling operation mode of the air conditioner.

  According to the third characteristic configuration of the present invention, in the cooling operation mode, the air flow by the fan of the air conditioner can be reduced in the cooling operation mode while the soft cooling without feeling the wind can be performed. With a simple operation that only increases the size, a cool air feeling can be sensed by the air current without cooling operation, and as a result, a comfortable feeling can be obtained while the power consumption can be suppressed as much as possible.

It is the schematic of the air conditioning equipment of this invention. It is a change graph of control temperature of the present invention. It is a graph showing the change of PMV accompanying the change of the airflow in each room temperature. It is a comparison data table of the power consumption in each control method. (A), (b), (c) is the schematic showing each control operation mode of the air conditioning equipment of another embodiment. It is the schematic of the air conditioning equipment of another embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, the air-conditioning equipment of the present invention is provided with a distributed installation type air conditioner 1 that operates in an air-conditioning manner so that a predetermined space such as a room has a set temperature, and feels a cool breeze in the predetermined space. The cool air fan 2 that generates the airflow is attached to the ceiling of a predetermined space separately from the air conditioner.
The distributed installation type air conditioner 1 includes a ceiling concealment type fan coil unit 1A that receives a supply of refrigerant through a cold / hot water pipe provided in the ceiling.
In addition, as shown in the graph of FIG. 2, the cooling operation mode in which the cooling operation is performed so that the predetermined space becomes the set temperature by the air conditioner, and after the predetermined space becomes the set temperature by the cooling operation mode, The cooling operation by the air conditioner is stopped until the fixed temperature rises to the first rising temperature, and at the same time the cooling operation stop mode in which the operation of the fan in the air conditioner and the cool air fan 2 is stopped, and the predetermined space is set by the cooling operation stop mode. A cooling air operation mode in which the cooling operation by the air conditioner is stopped until the temperature rises to the second rising temperature after the temperature rises, and the cool air fan 2 is operated while the fan in the air conditioner is also stopped. After the cool breeze operation mode, when the predetermined space reaches the second rising temperature, it switches to the cooling operation mode again, and sequentially controls each mode switching. Are the control device 3 is provided.

  For example, when the set temperature is set to 26 ° C., by setting the first raised temperature to 27 ° C. and the second raised temperature to 28 ° C., the room temperature can be lowered to 28 ° C. in the cooling operation stop mode as shown in FIG. For example, when the airflow is 0.05 m / s with almost no air flowing, the PMV (thermal environment evaluation index) is 0.60, which gives an unpleasant feeling. If the cool breeze fan 2 is operated so as to be 30 m / s and the cool breeze operation mode is set, the PMV becomes approximately 0.40, and a comfortable area can be maintained. Naturally, at 27 ° C. and 26 ° C., the PMV becomes −0.2 to 0.4 with an air flow of 0.30 m / s, and enters the comfort zone. Moreover, when the airflow of the cool air fan 2 is 0.20 m / s, the PMV falls within ± 0.5 between 26 ° C. and 28 ° C., which falls within the allowable range, and the airflow is 0.20 m / s or more. I know it would be nice.

Next, in an air conditioner equipped with a fan coil type air conditioner, as shown in FIG. 4, in the case of a method of maintaining a predetermined space at a set temperature (25 ° C.) by normal operation of the air conditioner (conventional example) When the control device performs intermittent cycle operation of the air conditioner (comparative example), and when performing control to sequentially switch between the cooling operation mode, the cooling operation stop mode, and the cool air operation mode as in the present invention (the present invention) Thus, the comparison data of the annual power consumption in a specific commercial facility (air-conditioning target area: 3100 m ² ) in Osaka City is summarized in a table.
According to this, in the case of the conventional example, the air conditioning condition is equivalent to 25 ° C., the PMV is 0.0, the annual power consumption is 567055 kw, and in the case of the comparative example, the air conditioning condition is set to the cooling operation mode at 27 ° C. Is 0.4, the annual power consumption is 468318kw and the conventional example is 100%, the comparative example is 83% and energy saving, but in the case of the present invention, setting to be in the cooling operation mode at 28 ° C, The PMV is 0.4, and the annual power consumption is 446705 kw, which is 78% of the conventional example, and it can be seen that further energy saving is achieved. However, the air conditioning time was calculated on the assumption that 10 hours per day (10 o'clock to 20 o'clock) and 353 days in the year.

[Another embodiment]
Other embodiments will be described below.

<1> In the cooling operation mode of the air conditioner, the operation of the cool air fan is normally stopped. However, the cool air fan may be in the operating state together with the air conditioner.
<2> As shown in the embodiment of FIG. 1, the air conditioner is provided with a ceiling concealed fan coil unit 1 </ b> A that receives the supply of refrigerant through a cold / hot water pipe provided in the ceiling, and the fan coil unit The air in which the temperature is adjusted from 1A is branched in the ceiling through the duct 4 and blown out from a plurality of outlets provided on the ceiling surface. Alternatively, a distributed installation type air conditioner 1 provided with a ceiling cassette type fan coil unit 1B exposed on a ceiling surface that receives supply of a refrigerant through a cold / hot water pipe that is piped in the pipe may be used. The air conditioner may be a heat pump type small air conditioner provided on the ceiling. Further, as shown in FIG. 6, a central type air conditioner of a type that supplies air whose temperature is adjusted from an air conditioner 5 provided outside through a duct 4 to a predetermined space such as a room may be used. However, in the case of a central type air conditioning facility, the cool air fan 2 must be provided in a predetermined space.
<3> When a distributed installation type air conditioner such as a fan coil unit is provided on the ceiling, the cool air fan 2 is not provided separately from the air conditioner to form the cool air operation mode, as shown in FIG. Further, control may be performed to generate an air flow so as to feel a cool breeze in a predetermined space such as a room by using a fan provided in the air conditioner. In this case, the air flow by the fan in the cool air operation mode (FIG. 5C) is made stronger than the air flow by the fan in the air cooling operation mode (FIG. 5A) so that the airflow is felt. It ’s fine.

  In addition, as mentioned above, although the code | symbol was written in order to make contrast with drawing convenient, this invention is not limited to the structure of an accompanying drawing by this entry. In addition, it goes without saying that the present invention can be carried out in various modes without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Distributed installation type air conditioner 2 Cool breeze fan 3 Control apparatus

Claims (3)

While providing an air conditioner that performs air conditioning so that the predetermined space becomes the set temperature,
A cool air fan that generates an air current so as to feel a cool breeze in the predetermined space is provided in the predetermined space separately from the air conditioner,
A cooling operation mode for performing a cooling operation so that the predetermined space becomes a set temperature by the air conditioner; and
After the predetermined space reaches the set temperature in the cooling operation mode, the cooling operation by the air conditioner is stopped until the first rise temperature that is a predetermined amount higher than the set temperature, and at the same time, the fan in the air conditioner and the cool air Cooling operation stop mode to stop the fan operation,
After the predetermined space reaches the first rising temperature in the cooling operation stop mode, the cooling operation by the air conditioner is stopped until it further rises to the second rising temperature, and the fan in the air conditioner is also stopped. A cool breeze operation mode for operating the cool breeze fan,
After the cool air operation mode, an air conditioner provided with a control device that switches to the cooling operation mode again when a predetermined space reaches the second rising temperature, and sequentially controls the operation of each mode switching. A distributed installation type air conditioner that operates in an air-conditioning manner so that a predetermined space reaches a set temperature
A cooling operation mode for performing a cooling operation so that the predetermined space becomes a set temperature by the air conditioner; and
After the predetermined space reaches the set temperature in the cooling operation mode, the cooling operation by the air conditioner is stopped and the fan operation of the air conditioner is stopped at the same time until the first temperature rises by a predetermined amount from the set temperature. Cooling operation stop mode,
After the predetermined space has reached the first rise temperature in the cooling operation stop mode, the air conditioner fan is operated while the cooling operation by the air conditioner is stopped until the predetermined space further rises to the second rise temperature. A cool breeze operation mode that generates an air current to make you feel a cool breeze in space,
After the cool air operation mode, an air conditioner provided with a control device that switches to the cooling operation mode again when a predetermined space reaches the second rising temperature, and sequentially controls the operation of each mode switching.   The air conditioning equipment according to claim 2, wherein in the cool air operation mode, the air volume is made larger than that in the cooling operation mode of the air conditioner.

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