JPH02140551A - Air conditioner and controller for ventilation fan - Google Patents

Abstract

PURPOSE:To shift an indoor fan from low to high to increase the air circulating amount of a room, and to shorten a ventilation operating time by turning ON ventilation fan operating means during the operation of an air conditioner. CONSTITUTION:A compressor 3b, an outdoor fan motor 3a and an indoor fan motor 1a are operated by turning ON an air conditioner operation switch 4. Since the motor 1a is connected to a low tap side, an indoor fan rotates to generate low air flow. When a ventilation fan operation switch 5 is turned ON, a ventilation fan motor 2a is energized to start ventilating. Simultaneously, the motor 1a is connected to a low tap side to increase an indoor fan air flow rate. When the switch 5 is closed during the operation of an air conditioner, a ventilation fan 2 is operated, and the air flow rate of the indoor fan motor is increased. Thus, its ventilation is accelerated to shorten its ventilation operating time. If ambient temperature detecting means and ambient temperature setting means are set to a difference of set value t deg.C or higher, the indoor fan is shifted from low to high. Accordingly, ambient temperature variation amount at the time of ventilation is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a control device that operates both an air conditioner and a ventilation fan.

2. Description of the Related Art Conventionally, in an example of simultaneous control of an air conditioner and a ventilation fan, as shown in FIG. There is a configuration that performs ON-OFF. Furthermore, as shown in FIG. 6, a configuration is also known in which the wireless receiving section 2a of the ventilation fan 2 receives a signal from the wireless transmission section 1a of the indoor air conditioner 1 and operates the ventilation fan 2 (Japanese Patent Laid-Open No. 61 -52
Publication No. 531).

Problems to be Solved by the Invention The problem with this conventional example is that if ventilation is performed during air conditioning, the room temperature changes excessively, leading to a deterioration of the feeling. Another major problem was that the ventilation time depended only on the capacity of the ventilation fan, so depending on the conditions, ventilation could take a long time.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides an m-control device that includes a ventilation fan, a ventilation fan driving means, and an indoor fan motor having a strong/low switching tap in the main body of an air conditioner. This is what I did.

Further, the present invention provides a control device that is further provided with a room temperature detection means, a room temperature setting means, and a ventilation fan operation means, and constituted by a control section having an input means, a judgment means, and an output means.

Effect: With the above-described configuration, the indoor fan is switched from weak to strong by turning on the ventilation fan operating means while the air conditioner is operating, thereby increasing the amount of air circulation in the room.
Ventilation operation time can be shortened.

Further, the present invention enables the ventilation fan operating means to be turned on while the air conditioner is operating.
By operating N, if the difference between the room temperature detection means and the room temperature setting means is more than the set value t'c, the indoor fan will shift from weak to strong, so the amount of change in room temperature caused by ventilation can be reduced, and the air conditioning It is possible to suppress a decrease in feeling.

EXAMPLE Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an overall configuration diagram, in which 1 is an indoor air conditioner, 2 is a ventilation fan, 3 is an outdoor air conditioner, 4 is an air conditioner operation switch for operating the air conditioner, and 5 is an air conditioner operating switch. is a ventilation fan operation switch for operating the ventilation fan 2.

Next, the structure of the sequence circuit diagram in the first embodiment will be explained with reference to FIG. Note that the same functions as those in FIG. 1 will be explained using the same numbers.

In the figure, la is an indoor fan motor provided inside the indoor air conditioner a1, 2a is a ventilation fan motor provided inside the ventilation fan 2, and 3a and 3b are outdoor air conditioners 3.
An outdoor fan motor and a compressor are installed inside, and 6 is an AC power source. Next, the sequence circuit connection configuration shown in the figure will be explained. One side of the AC power supply 6 is connected to the air conditioner operation switch 4, and the other side is connected to the ventilation fan motor 2a, indoor fan motor la, outdoor fan motor 3a, and compressor 3.
b. The other end of the air conditioner operation switch 4 is connected to the common side of the ventilation fan operation switch 5, the other end of the outdoor fan motor 3a, and the other end of the compressor 3b. The open contact 5a side of the ventilation fan operation switch 5 is connected to the other end of the ventilation fan motor 2a and the strong tap side of the indoor fan motor la. The closed contact 5b side of the ventilation fan operation switch 5 is connected to the weak tap side of the indoor fan motor 1a.

Next, the operation in the configurations shown in FIGS. 1 and 2 will be explained.

First, by turning on the air conditioner operation switch 4, the compressor 3b, outdoor fan motor 3a, and indoor fan motor 1a are turned on.
is driving. At this time, since the indoor fan motor la is connected to the weak tap side, the indoor fan is in a weak wind state.

Next, when the ventilation fan operation switch 5 is turned on, the ventilation fan motor 2a is energized and ventilation operation is started. At the same time, since the indoor fan motor 1a is connected to the strong tap side, the indoor fan air volume increases.

As described above, according to the first embodiment, when the ventilation fan operation switch 5 is turned ON while the air conditioner is operating, the ventilation fan 2 operates and the air volume of the indoor fan motor increases, so that the ventilation operation is promoted. , the ventilation operation time can be shortened.

In the first embodiment, the ventilation fan operation switch 5 is operated using a switch, but a capacitor, a resistor, an I
It goes without saying that the above-mentioned control can be realized even if it is formed using discrete components such as C or a microcomputer.

Next, a second embodiment of the present invention will be described with reference to FIG. Here, the same parts as those in the first embodiment are given the same reference numerals and the description thereof will be omitted.

FIG. 3 is a sequence circuit diagram in the second embodiment, and its configuration will be explained.

The control unit 7, outdoor fan motor 3a, and compressor 3b are connected in parallel to an AC power source 6 via an air conditioner operation switch 4. The indoor fan motor 1a is connected in parallel to the control section 7 via an indoor fan motor relay contact 1b. Similarly, the ventilation fan motor 2a is also connected in parallel to the control unit 7 via the ventilation fan motor relay contact 2b. The closed contact 1b' side and the open contact lb' side of the indoor motor relay contact 1b are connected to the weak tap side and the strong tap side of the indoor fan motor 1a, respectively. Inside the control section 7, a suction section thermistor 8 and a ventilation fan operation switch 5 are provided for detecting the room temperature.

Next, the circuit configuration within the control section will be explained.

In the same figure, 9 is a DC power supply, generally 5 - 12V.
It is. 12 is a binary code switch used in the means for setting the room temperature. A fixed resistor 14 is connected to the suction thermistor 8 and inputs a divided potential to the microcomputer 13.

Reference numerals 10 and 11 denote transistors for operating the indoor motor relay coil lc and the ventilation fan motor relay coil 2C, respectively, and their operations will be explained with reference to the zero-order configuration shown in FIG. 3, which is connected to the microcomputer 13.

First, by turning on the air conditioner operation switch 4, the compressor 3b and the outdoor fan motor 3a are operated. At this time, the indoor fan motor 1a is in a weak wind operation state because the indoor motor relay contact 1b is on the closed contact side. At the same time, since the control section 7 is also energized, the temperatures detected by the binary code switch 12 and the suction section thermistor 8, which are set in advance by the user as room temperature, are input into the microcomputer 13. Here, when the user turns on the ventilation fan operation switch 5, the input is input to the microcomputer 13, so that the microcomputer 13 generates an ON signal to the ventilation fan motor 2a.

At the same time, since the room temperature setting and room temperature state are constantly detected, if the temperature difference is greater than or equal to the set value t'c, the microcomputer 13 generates an ON signal to the indoor motor relay coil 1C. Therefore, since the indoor motor relay contact operates, the indoor fan motor 1a enters a strong wind condition.

Next, this will be explained in more detail with reference to the timing diagram of FIG.

When the operation switch 4 is turned ON, the compressor 3b and the outdoor fan motor 3a are turned on, and the indoor fan motor 1b is put into a weak operation. In this state, the indoor temperature moves closer to the set temperature. Therefore, when the ventilation fan operation switch 5 is turned on, the difference between the set temperature and the indoor temperature is the set value t°C.
If it is above, the indoor fan shifts from weak to strong, and conversely, if the difference between the set temperature and the indoor temperature is less than the set value t'c, it continues to operate weakly.

FIG. 5 is a flowchart inside the microcomputer, showing an example of input means for a ventilation fan operation switch, means for determining the difference between room temperature and set temperature, output means for indoor fan high operation, and output means for the ventilation fan.

As described above, according to the second embodiment, when the ventilation fan operation switch 5 is turned on while the air conditioner is operating, the ventilation fan 2 operates and the indoor air volume is increased if the difference between the indoor temperature and the set temperature is 1° C. or more than the set value. Therefore, it is possible to reduce the amount of change in room temperature that occurs during ventilation, and it is expected that a decrease in the feeling of the room will be suppressed.

Effects of the Invention As is clear from the above embodiments, in the present invention, when the ventilation fan operating means is turned on while the air conditioner is operating, the indoor fan is forcibly switched from weak to strong operation, so the air volume increases and the room Increases air circulation. Therefore, the ventilation speed is accelerated and ventilation can be completed in a short time, which has the effect of shortening the user's troublesome time waiting for the ventilation operation to end. In addition, when ventilation is ON, the volume of the ventilation fan cancels out the volume of the air conditioner due to the increase in air volume, so it is expected that the noise window for the user will be reduced.

Furthermore, in the present invention, when the ventilation fan operating means is turned on while the air conditioner is operating, if the difference between the temperature detected by the suction part thermistor and the set temperature is greater than the set value t'c, the indoor fan is switched from weak to strong operation. This makes it possible to suppress changes in room temperature that occur during ventilation. Therefore, for the user, the same feeling of air conditioning as in normal air conditioning operation can be obtained during ventilation operation, so that the user can expect stable air conditioning at all times.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of a control device showing an embodiment of the present invention;
Fig. 2 is a sequence circuit diagram showing a first embodiment of the control device, Fig. 3 is a circuit diagram showing a second embodiment of the control device, and Fig. 4 shows the operating status of the second embodiment. FIG. 5 is a flowchart showing the operation details of the second embodiment, and FIGS. 6 and 7 are schematic configuration diagrams showing different conventional examples. 1... Indoor air conditioner, la... Indoor fan motor, 1b... Indoor motor relay contact, 2... Ventilation fan, 2a...・Ventilation fan motor, 2b...Ventilation fan motor relay contact, 5...
... Ventilation fan operation switch, 8... Suction temperature thermistor, 12... Binary code switch, 13... Microcomputer. Name of agent: Patent attorney Shigetaka Awano Haka 1 person No. 1 ■ 12 Figure 1-11 Mouse I11! Redemption I group ki kun πl ki 2--one ventilation fan 3-! rFiiX'1! Air m g a4- Sky: ”
A, tfls flllr @ return switch + 5- greeting 1 Mr. JII! Turn the switch ftL--Ichikako 77-G2eL...-Ventilation fan 11G Fig.

Claims (2)

[Claims] (1) The air conditioner body is equipped with a ventilation fan, a ventilation fan driving means, and an indoor fan motor with a strong/low switching tap,
The control device for the air conditioner and ventilation fan further includes a switching means for switching the indoor fan from weak to strong when the ventilation fan operating means is turned on during operation of the air conditioner. (2) A control unit comprising a room temperature detection means, a room temperature setting means, and a ventilation fan operation means, and includes an input means, a determination means, and an output means, and the ventilation fan operation means is turned on while the air conditioner is operating. A control device for an air conditioner and a ventilation fan, comprising a switching means for switching an indoor fan from weak to strong if there is a temperature difference of more than a set value t between the room temperature detection means and the room temperature setting means.