JPH05106906A - Controller of air conditioner - Google Patents

Abstract

PURPOSE:To prevent the room temperature rise and maintain it at pleasant temperature by carrying out room cooling by means of the outdoor air when its temperature is low and automatically switching to a strong blast volume in order to supply a large volume of air to the inside of the room when the outdoor air temperature and the room temperature are compared and their difference is large. CONSTITUTION:In room cooling operation in which an indoor machine 1 is operated, the coolant from a compressor 13 is condensed by a heat exchanger 12 and it is sent to a heat exchanger 3 in a room through a coolant piping on the liquid side, and the coolant, cools the air three near the heat exchanger 3 and, on the other hand, the coolant itself evaporates and is returned to the compressor 13 via a coolant piping 15 on the gas side In this case, set temperature by a remote controller switch 5,room temperature and outdoor temperature detected by a sensor are inputted to a controller 4a, and if the room temperature is the same as or lower than the set temperature and the outdoor temperature is lower than a specified temperature, the compressor 13 is stopped and room cooling operation by means of the outdoor air is performed. And in this case if the difference between the outdoor temperature and room temperature is higher than a specified value, the air conditioning operation is controlled so as to switch it to a strong blast operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning controller.

[0002]

2. Description of the Related Art A conventional apparatus is disclosed in, for example, Japanese Patent Laid-Open No. 62-2427.
It is conventionally known from Japanese Patent Publication No. 48.

This air-conditioning control device recognizes the temperature difference between the inside and the outside and only introduces the outside air (only the blowing operation) when the outside temperature is low, and operates the compressor when the outside temperature is high. It was a system to perform cooling operation by controlling the flow rate.

[0004]

The conventional air-conditioning control device recognizes the temperature inside and outside the room, and when the outside air temperature is lower than a certain temperature, the inside air blowing operation is performed and the outside air cooling operation is performed. However, there is a problem that only the opening / closing of the damper or the on / off control of the blower is used, the indoor temperature control is not constant, and the blowing power is constant, so that the energy saving effect is small.

An object of the present invention is to effectively control the amount of air blown in an indoor air blow operation by the outside air temperature, the indoor temperature and a set temperature, to improve the comfort of the indoor temperature and to obtain the energy saving effect during the air blow operation. is there.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a detector for detecting an outside air temperature, an indoor temperature, and a set temperature, and a control content of an indoor blower based on data from these detectors. Provide a control device that is determined according to a program that is input in advance and a control signal output device that outputs to the blower according to the determined control content, and if the outside air temperature is lower than the temperature that is input to the control device in advance, blow indoor air Only the operation is performed, and the air volume of the indoor blower is increased or decreased depending on the difference in temperature between the outside air temperature and the indoor temperature.

[0007]

According to the present invention, when the outside air temperature becomes equal to or lower than the temperature input in advance to the control device, the outdoor compressor is stopped,
Only the indoor ventilation operation is automatically performed, and cold outside air is taken into the room to perform outdoor air cooling operation. After that, the indoor temperature is compared with the outdoor temperature, and if the temperature difference is large, it is determined that the indoor load is large, the amount of air blown indoors is increased, and control is performed so that the set temperature is reached quickly. When the temperature difference is small, it can be determined that the indoor load is small, and the amount of indoor air blow can be weakened to reduce the power of the blower.

As a result, it is possible to obtain the energy saving effect and the improvement of comfort during the outside air cooling operation.

[0009]

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

As shown in FIG. 1, the air conditioner apparatus of this embodiment is composed of an outside air introduction type indoor unit and an outdoor unit.

The outdoor unit 10 includes a compressor 13 and a blower 1.
1, a heat exchanger 12 is provided. The indoor unit 1 includes a blower 2, a heat exchanger 3, a remote control switch 5, an indoor temperature detector 6, and an outside air temperature detector 7. Further, there are provided a control device 4a for detecting and comparing the temperature, and processing the detected contents by a program inputted in advance, and a control device 4b for outputting those signals to a blower. Then, the liquid-side refrigerant pipe 1 that connects the indoor unit 1 and the outdoor unit 10
4. It is composed of gas side refrigerant piping. Since the indoor unit 1 takes in outside air and performs cooling operation, an air intake duct 8 is provided at the outside air intake port of the indoor unit 1, and an air blowout duct 9 is provided at the outlet port.

Next, the operation of this embodiment will be described with reference to the flow chart of FIG.

In the cooling operation, when the indoor unit 1 is operated, the refrigerant from the compressor 13 is condensed in the heat exchanger 12,
It is sent to the indoor heat exchanger 3 through the liquid-side refrigerant pipe 14 and is sucked into the compressor 13 through the gas-side refrigerant pipe 15 after evaporation.

Here, the set temperature T of the remote control switch 5
_{1. The} indoor temperature and the outside air temperature are detected during cooling operation (steps 16, 17, 18). The temperature is controlled by the controller 4a,
4b has been recognized (step 19).

First, when the room temperature is equal to or lower than the set temperature, the outside air temperature is then compared with the temperature T ₂ input to the control device in advance, and when the outside air temperature is low, the compressor is stopped and the indoor unit blowing operation is performed. Then, the outside air cooling operation is performed (steps 20, 21, 22, 23). Next, if the difference between the outside air temperature and the room temperature is equal to or lower than the temperature ΔT input in advance to the control device, the indoor air flow rate becomes weak, and if it is equal to or higher than the temperature ΔT input in advance to the control device, the air flow amount becomes strong (step 24, 25, 26). Here, if the outside air temperature is equal to or higher than the temperature T ₂ input to the control device in advance, the compressor is stopped and the indoor unit is operated at the set air volume (steps 21 and 2).
7, 28). When the room temperature is higher than the set temperature T ₁ , the cooling operation is continued, and the outside air temperature is compared with the temperature T ₂ input to the control device in advance (steps 29 and 3).
0).

By the control as described above, in the outside air cooling operation when the outside air temperature is low (the blowing operation by taking in the outside air), strong or weak operation of the blowing amount is performed due to the temperature difference between the outside air temperature and the room temperature. Energy-saving effect of blower power can be obtained.

[0017]

According to the present invention, in the outside air introduction type air conditioner, when the outside air temperature is lower than the temperature inputted in advance to the control device, the cooling operation by the outside air is performed, and in this case, the outside air temperature and the room temperature are further compared. When the difference is large, the amount of strong air is automatically increased so as to send a large amount of outside air to the indoor side, the indoor temperature is prevented from rising, and the comfortable temperature is maintained.
Further, when the difference between the outside air temperature and the indoor temperature is small, the indoor load is small, so the amount of air blown into the outside air can be weakly operated to reduce the blower power.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an indoor unit and an outdoor unit according to an embodiment of the present invention.

FIG. 2 is a control flowchart of the embodiment shown in FIG.

[Explanation of symbols]

1 ... Indoor unit, 2 ... Blower, 4a, 4b ... Control device, 5 ...
Remote control switch, 6 ... Indoor temperature detector, 7 ... Outside air temperature detector, 10 ... Outdoor unit.

Claims (1)

[Claims] 1. An outdoor unit including a compressor, an outdoor heat exchanger, a blower, and the like, and an outdoor air introduction type indoor unit including an indoor heat exchanger and a blower, which are connected to the outdoor unit via connection pipes, respectively. In the equipped air-conditioning system of the air-cooling type refrigeration cycle, if the outside air temperature becomes lower than the temperature input to the control device in advance during cooling operation, the compressor operation is stopped and only the indoor ventilation operation is performed with a strong air volume. If the outside air temperature is higher than the temperature input to the controller in advance after the outside air introduction operation is performed, the compressor is operated and the normal cooling operation is performed, and the difference between the outside air temperature and the indoor temperature is detected in advance by the controller. If the temperature is less than the temperature input to the indoor unit, the air volume of the indoor unit blow operation is weakened, and if the difference between the outside air temperature and the indoor temperature is more than the temperature previously input to the control device, An air conditioning control device characterized in that the amount of air blown by the unit is high.