JPS59191842A - Blowing controller of air conditioner - Google Patents

Abstract

PURPOSE:To contrive the improvement of indoor temperature distribution at the time of heating and to improve a sense of heating by making a temperature of air at person's foot ascend, by controlling decision of blowing-off at the top and bottom and a blow-off air quantity, by sensing a temperature, pressure and a suction air temperature of an indoor side heat exchanger. CONSTITUTION:The front of a main body 1 of an air conditioner is provided with a top blow-off opening 1a, a bottom blow-off opening 2 and an indoor inlet port 3 of air, the inside of the main body 1 of the air conditioner is provided with a top and bottom blowers 4, 5, an indoor side heat exchanger 6 and motors 7, 8 for the respective top and bottom blowers 4, 5, and a temperature and pressure sensor 9 are set up. At the time of operation of a cooler, the signals of the sensor 9 which sensed a blow-off and suction air temperatures and a temperature and pressure of a refrigeration cycle are applied to a control box, a controller 11 and a change-over switch 12 of an air conditioner are controlled and operation of the air conditioner is done by operating only the top blower 4. At the time of heating, the controllers 11, 13 are controlled by the control box 10 and air-conditioning is done by operating the top and bottom blowers 4, 5.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a ventilation control device for a floor-standing type air conditioner for both air conditioning and heating, which has two air outlets, one above the other. By sensing the temperature, pressure, or temperature of the intake air passing through the indoor heat exchanger, determining whether the air is blowing upward, downward, or both upward and downward, and controlling the airflow volume, the indoor temperature distribution during heating can be improved. The purpose is to improve the feeling of heating by increasing the temperature of the indoor air near your feet.

Conventional heating operation using a wall-mounted air conditioner for heating and cooling has the disadvantage that warm air accumulates in the upper part of the room, leaving the living space and feet of the room cold even if the heating capacity or airflow speed is improved. Was. In order to overcome this drawback, a floor-standing air conditioner with air conditioning/heating and moon-shaped air conditioners was developed, and a floor-standing air conditioner with two air outlets, one above the other, was also developed. The upper and lower component power type of the floor-standing air conditioning/heating and moon-shaped air conditioner is performed using one blower, and when blowing air into the upper and lower sections, a part of the blower casing is opened or a duct is installed from the upper air outlet. Since the structure is such that a part of the blown air is guided to the lower outlet and blown out, the temperature of the blown air, the amount of air, and the speed of the air are insufficient, and a sufficient temperature distribution effect cannot be obtained.

Additionally, a structure is known in which a wall-mounted cooling-only air conditioner is provided with two air outlets at the top and bottom, and one blower is provided at each air outlet to manually control various operating modes. However, since it is a wall-mounted type and is designed exclusively for cooling, it has not been possible to improve the indoor air temperature distribution and the feeling of heating, which are the above-mentioned drawbacks during heating operation.

The present invention eliminates the drawbacks found in the conventional air blowing control devices for air conditioners.

Hereinafter, the present invention will be described with reference to the accompanying drawings showing one embodiment thereof. In the figure, reference numeral 1 denotes a floor-standing air conditioner body, which is equipped with an upper air outlet 1a, a lower air outlet 2, and an indoor air intake port 3 on the front, and an upper air blower 4, a lower air blower 5, and an indoor air intake inside. heat exchanger 6, upper blower motor 7,
A lower blower motor 8 is provided, and by operating these motors, well-known air conditioning operation is performed. Reference numeral 9 denotes a sensor installed in the refrigeration cycle to detect the temperature of the blown air, the temperature of the suction air, or the temperature or pressure.The signal from this sensor 9 is input to a control box 10 equipped with a microcomputer or the like. Ru. Here, a timer mechanism may be added to this sensor 9 if necessary. A control device 11 controls the upper blower 4 and is operated by a signal from the control box 10.

Reference numeral 12 indicates a switching switch between cooling and heating, which energizes the lower blower 8 only during heating operation. Reference numeral 13 denotes a control device for controlling the lower blower 5, which is activated by a signal from the control box 10.

In the above configuration, during cooling operation, a signal from the sensor 9 that detects the blowout or suction air temperature or the temperature or pressure during the refrigeration cycle is input to the control box 10,
The control box 1° controls the control device 11 and the cooling/heating switching unit 12, and the upper air outlet 1
Indoor air conditioning operation is carried out by operating only the upper blower 4 installed in a.Next, during heating operation, the control box 10 receives a signal from the sensor 9 that detects the blowout and suction air temperature or the temperature and pressure during the refrigeration cycle. The controller 11.13 is controlled by the control box 10 to operate the upper blower 4 installed at the upper air outlet 1a and the lower air blower 5 installed at the lower air outlet 2 to perform indoor air conditioning operation. .

In this way, by controlling the upper air outlet and the lower air outlet independently and separately, particularly during heating operation, various operating modes are possible.

Next, an example of the heating mode will be described with reference to Figure @5. In this embodiment, it is assumed that the sensor 9 detects the temperature of the indoor heat exchanger 6.

In the figure, after the heating operation starts, the upper and lower blowers do not rotate when the temperature of the indoor heat exchanger 6 reaches the set value A, and then when the temperature reaches the set value A, the upper blower 4 starts operating from a low speed. , then when the set value B is reached, the speed increases. Furthermore, when the temperature of the indoor heat exchanger 6 increases and reaches the set value C, the lower blower 5 also starts rotating. And indoor heat exchange! When the temperature of 86 reaches the set value DK, the lower blower 5 operates at high speed. In this embodiment, the rotation of the blowers 4 and 5 is controlled in stages, but the rotation speed can also be controlled in a stepless manner using well-known control.

In this embodiment, the upper blower 4 is started to operate first, but the same effect can be expected even if the lower blower 5 is started.

Therefore, in this embodiment, (1) Immediately after the start of heating operation, only the upper blower or the lower blower is used, and the heating operation is stopped as time elapses or as the temperature and pressure during the refrigeration cycle or temperature of the blowing air or suction air is detected. Operations such as weak blowing and strong blowing are performed, and when the above conditions exceed a certain set value, lower blowing or upper blowing is also used.

■ If the indoor load is high, operate both upper and lower blowers 4 and 5 at their maximum capacity.

■ If the set temperature is set to C in the range of A to E, and the indoor temperature is stable at that set temperature,
Operate with top blow only or bottom blow only.

Various operation modes can be controlled by selecting the positions of the air outlets 1a and 2 or setting the air volume.

As a result, the drawback of conventional heating operation in which only the upper part of the room is warm and the living space and the feet are cold is eliminated, and heating operation that provides an effective indoor air temperature distribution and a feeling of heating can be performed.

As is clear from the above embodiments, the air blower control device for an air conditioner according to the present invention controls the operation of the upper or lower blower or both upper and lower blowers depending on the detection state of the load detector during heating operation. Therefore, the amount and speed of air blown can be adjusted according to the load condition, and the indoor temperature distribution can be improved to improve comfort. Further, when the load detector detects a first load condition, one of the blowers is rotated at a low speed, and when a second load condition larger than the first load condition is detected, the one blower is rotated at a high speed; When a third load state that is larger than the second load state is detected, in addition to operating one of the blowers, the other blower is rotated at a low speed,
Furthermore, when a fourth load state, which is larger than the third load state, is detected, the other blower is rotated at high speed, so that the amount of air flow, wind speed, etc. according to the first to fourth load states can be adjusted. As a result, it is possible to maintain a good indoor temperature distribution, eliminating the conventional disadvantage of being warm above and cold underfoot, and achieving an effective indoor air temperature distribution 2 that provides a pleasant heating effect. , which has various advantages.

[Brief explanation of drawings]

Fig. 1 is a front view of an air conditioner equipped with an air blow control device according to an embodiment of the present invention, Fig. 2 is a longitudinal sectional view of the air conditioner, and Fig. 3 is a partial cutaway of the air conditioner. Front view, 4th
The figure is a schematic electrical circuit diagram of the air blow control device, and FIG. 5 is a timing chart during heating operation showing the operation mode of the air conditioner by the air blow control device. 1... Air conditioner main body, 1a... Upper outlet, 2
... lower air outlet, 3 ... indoor air suction port, 4 ... upper blower, 5 ... lower blower, 6 ...
...Indoor heat exchanger, 9...Sensor (load detector), 1o...Control Bonokunu (control device) Name of Udai 0th Patent attorney Toshio Nakao et al. 1 person Figure 1 Figure 2 Figure A Figure 3 Figure 4

Claims (2)

[Claims] (1) The air conditioner body is equipped with upper and lower air outlets, and an indoor heat exchanger that constitutes a refrigeration cycle together with a compressor, an outdoor heat exchanger, etc., and two blowers facing each of the air outlets. and a control device that controls the operation of each blower, and one or a combination of the temperature and pressure of the indoor heat exchanger or the temperature of overblown air from the outlet during heating operation. The air conditioner is provided with load detectors that collectively detect a plurality of load states and output them to the control device, and the control device controls the operation of each of the blowers according to the load detection states of the load detectors. Air blow control device. (2) When the load detector detects the first load condition, one of the blowers is rotated at a low speed, and when a second load condition larger than the first load condition is detected, the one blower is rotated at a high speed. Further, when a third load state that is higher than the second load state is detected, in addition to operating one of the blowers, the other fan is rotated at a low speed, and a fourth load state that is also higher than the third load state is established. The air blow control device for an air conditioner according to claim 1, wherein the other blower is rotated at high speed when the other blower is detected.