JPS5934261B2 - Air conditioner blow control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a blower control device for an air conditioner.
One of the purposes is to improve the indoor air conditioning effect by continuously or intermittently varying the air blowing capacity at certain intervals on the indoor side.

BACKGROUND ART Conventionally, air blowing control of an air conditioner has been such that only a fixed air blowing capacity can be obtained unless the user varies the blowing capacity.

Therefore, if you stay in a room for a long time, your sense of body 0 will become familiar with the atmosphere.

It was not possible to obtain a sufficient air conditioning effect perceptually, and since the air was continuously blown to a certain area, the temperature distribution throughout the room was also poor.

The present invention eliminates the drawbacks found in the above-mentioned conventional air blow control devices.

The present invention will be described below with reference to the accompanying drawings showing embodiments thereof.

In FIG. 1, 1 is a power switch, 2 is a compressor that is operated intermittently by a detection device 3 that detects pressure during the refrigeration cycle, indoor temperature, and outdoor temperature, 4 is a fan motor disposed on the indoor side, and 5 is a speed variable device that controls the rotation speed of the fan motor 4, and this speed variable device 5 includes a moving device 6 that reciprocates a moving element 6a at a certain period, and a moving device 6 that is connected in series with the fan motor 4 through this moving device 6. The speed control resistor 7 connected to the
- It is composed of a thermostat 8 that is turned off, and a motor 9 that is connected in series with the thermostat 8 and drives the moving device 6.

Here, the moving device 6 is configured such that the moving range of the moving element 6a decreases from L to l when the indoor temperature reaches a certain set temperature.

Reference numeral 10 denotes a manual switch for controlling power supply to the motor 9.

Next, an example of a configuration for reciprocating the mover 6a and a configuration for changing the movement range from L to J will be described with reference to FIG.

In the figure, the mover 6a is reciprocated via a link mechanism 21 driven by a motor 9.

The mover 6a also has two brushes connected in parallel, one of which is equipped with a thermostat 22 that opens when the room temperature reaches a set value.

Therefore, the mover 6a reciprocates via the link mechanism, and the thermostat 22 switches its movement range from L to J.

In the above configuration, when the power switch 1 is turned on with the 0 manual switch 10 turned OFF, the fan motor 4 is at the stop position of the moving device 6, that is.

Based on the voltage determined by the resistor 4, it rotates at a constant rotation speed.

In this case, if necessary, the moving device 6 can be configured so that the fan motor 4 rotates at the highest speed.

Next, when the manual switch 10 is turned on in this state, the rotation speed of the fan motor 4 does not change unless the thermostat 8 is turned on.

When the indoor temperature has reached the first set temperature, the thermostat 8 is turned on, so the motor 9 is activated and drives the moving device 6 to move the moving element 6a continuously over the entire resistor 7. Moving.

Therefore, the fan motor 4 is operated while continuously changing its rotation speed in a stepless manner according to the voltage divided by the resistor 7.

Then, when the indoor temperature reaches the second set temperature.

The reciprocating range of the mover 6a of the moving device 6 becomes smaller.

For example, if the speed of the fan motor 4 was being changed over the entire range from strong to low as indicated by L, the thermostat 21 is opened and the speed of the fan motor 4 is changed within the range from medium to low as indicated by l.

Furthermore, when the indoor temperature reaches the third set temperature.

The detection device 3 is turned off and the operation of the compressor 2 is stopped.

Also at this time, the rotation speed of the fan motor 4 is variable.

When the indoor temperature reaches the set temperature again, the compressor 2 is operated in the same manner as described above, and the fan motor 4 continues to operate while continuously varying its rotation speed.

The following operation is performed.

Also, when power switch 1 is turned on, manual switch 1
If 0 is set to ON, the above-mentioned speed variable operation is suddenly performed when the thermostat 8 is turned ON.

Next, changes in room temperature will be explained using FIG. 3, taking as an example the case of cooling operation.

In this case, it is assumed that the moving device 6 is provided with a well-known return configuration so that the manual switch 10 is turned on and the fan motor 4 always rotates at the maximum rotation speed.

Therefore, at the same time as the operation starts, the thermostat 8 detects the temperature rise in the room and turns off, so the fan motor 4 rapidly cools the room.

When the indoor temperature reaches the first set temperature T1, the thermostat 8 is turned on, and the room continues to be cooled while varying the rotation of the fan motor 4.

In this case, since the amount of air blown is varied, the temperature decrease also becomes pulsating as shown in the figure.

Then, when the cooling progresses further and reaches the second set temperature T2, the movement range of the moving device 6 becomes smaller, and the fan motor 4 rotates, for example, in a medium to low speed range, and as the cooling progresses further, the temperature reaches the third setting. When the temperature T3 is reached, the detection device 3 detects this and stops the compressor 2.

Therefore, the indoor temperature rises, and when it reaches the operating temperature T4 of the detection device 3, cooling is started again in the same way, and the same operation is repeated thereafter.

Furthermore, if the configuration is such that the thermostat 8 is not used, the indoor temperature changes as shown in FIG.

Note that heating is also different from cooling in that the room temperature rises, and the rest is the same, so the explanation will be omitted.

Next, the indoor temperature distribution state due to the variable speed operation of the fan motor 4 will be explained based on FIG. 4.

In the figure, A indicates the indoor unit of the air conditioner,
When the fan motor 4 is rotating at the maximum rotational speed, cold air (warm air) is blown far away in the room B as shown by arrow X.

Then, as the rotation speed of the fan motor 4 gradually decreases, arrow Y appears.

As shown by arrow Z, the distance it reaches becomes gradually shorter.

Conversely, when the rotational speed of the fan motor 4 increases, the distance it reaches gradually increases as indicated by arrow Z, arrow Y, and arrow X, on the contrary.

Therefore, when you are in room B, you physically feel that the cold air (warm air) is blowing intermittently, so you can experience a good cooling effect (heating effect), and the temperature distribution in room B also changes. Since the temperature is dispersed throughout the room B, a better temperature distribution state can be obtained.

Next, another embodiment of the present invention will be described with reference to FIG.

In the same figure, the same parts as those in the first embodiment are given the same numbers and the explanation will be omitted.

The difference between this embodiment and the first embodiment is as follows.

In the first embodiment, the speed of the fan motor 4 is changed steplessly, whereas in the first embodiment, the speed is changed in steps such as high, medium and low by different resistors 7a, 7b, and 7c. Therefore, the fan motor 4 has a plurality of taps a s E) y C, and the taps a, b
, c.

For example, a link mechanism 21 driven by a motor 9 as shown in FIG. 7 may be used to operate the mover 6a in stages.

Furthermore, if the moving device 6 is provided with a well-known return configuration so that the speed is always the highest when starting, the usability will be further improved.

Therefore, its operation differs from that of the above embodiment in that the fan motor 4 changes in stages.

Similar effects can be obtained.

When the indoor temperature is in the range of T2 to T3, the thermostat 22 is opened, so taps a and b are opened.

Switching between taps C (strong to weak) corresponds to switching between taps b and c (medium 2-low).

Incidentally, in each of the embodiments described in L, partial pressure control of the voltage was used to control the speed of the fan motor 4.

The speed control of the fan motor 4 is 0 phase control.

Similar effects can be obtained with other controls such as frequency control.

Further, similar effects can be obtained even if a timer switch 11 is provided in place of the thermostat 8.

Further, the control explained in each embodiment can be performed by an electronic control device mainly composed of semiconductor elements such as a microcomputer without departing from the gist of the present invention.

As is clear from the above embodiments, the air blowing control device for an air conditioner according to the present invention provides an air conditioner equipped with a heat exchanger, an air blower, etc., and continuously or intermittently varies the air blowing capacity of the air blower. This device is equipped with a blowing capacity variable device that changes the blowing capacity of the blower, and a blowing capacity control device that changes the blowing capacity variable range of the blower according to the indoor temperature. It has the effect of stirring the air, making it possible to maintain a better temperature distribution in the room.Furthermore, since the variable range of the air blowing capacity is changed according to the indoor temperature, sudden temperature changes can be alleviated. It has various advantages such as improved performance.

[Brief explanation of the drawing]

FIG. 1 is a schematic electrical circuit diagram of an air conditioner equipped with an air blow control device according to an embodiment of the present invention, and FIG. 2 is a schematic configuration diagram of main parts of the air blow control device. Fig. 3 is a percentage characteristic diagram showing the indoor temperature change due to the same control, Fig. 4 is a percentage characteristic diagram showing the indoor temperature change due to the control according to another embodiment of the present invention, and Fig. 5 is a percentage characteristic diagram showing the indoor temperature change due to the same control. FIG. 6 is a schematic electrical circuit diagram of an air conditioner equipped with a blow control device showing another embodiment of the present invention, and FIG. 7 is a diagram showing the main parts of the blow control device. It is a schematic configuration diagram. 4...Fan motor (air blower), 5...
...Variable speed device, 8...Thermostat, 1
1... Timer switch, 21... Link mechanism, 22... Thermostat (switching control device).

Claims (1)

[Scope of Claims] 1. An air conditioner equipped with a heat exchanger, a fan motor of a blower, etc., in which the rotation speed of the fan motor is continuously or intermittently varied by voltage control, phase control, frequency control, etc. and a speed variable device that detects the temperature in the room and changes the rotation speed of the fan motor over the entire range from strong to weak in accordance with the detected temperature. An air conditioner blow control device equipped with a switching control device that switches from medium to low.