JPS5832A - Air conditioner with automatic ventilating function - Google Patents

Abstract

PURPOSE:To prevent a room from being polluted while an air conditioner is operated, and to improve the sanitar condition in the room, by composing an air conditioner in such a manner that a ventilating level, which is determined from a pollution level at an early time of operation, is detected by a room pollution sensor, being compared with a set pollution level, and an air conditioning operation is changed to a ventilating operation, when a pollution level reaches a ventilating level. CONSTITUTION:An initial level read-in signal from a control circuit 1 is put into the clear terminal of a counter 5, oscillating outputs from a comparator 4, a resistor 13-17 and a capacitor 55 are put into the clock terminal of said counter, counting is performed in it, and the voltage of + input terminal of a comparator 6 rises through an output Q1-Q7. When this voltage is accorded with the voltage level of a ventilating sensor circuit 9, counting is stopped, and an initial level is stored. When an air pollution proceeds, and the voltage of a sensor is hightened up to a ventilating level which is determined by a resistor 46. By this voltage, a comparator 7 is operated, a ventilation operating command is put out to a control circuit 1, to change an air conditioner to a ventilating operation.

Description

DETAILED DESCRIPTION OF THE INVENTION Himi BA relates to an air conditioner with an automatic ventilation function that detects indoor dirt and automatically shifts to ventilation operation.

In recent years, many houses with a high airtightness have appeared in ordinary houses, but if you operate an air conditioner in such a house, the airtightness is high, so if there are many people in the room, it will be crowded. Indoor air tends to be very polluted due to the generation of cigarette smoke and various harmful gases, and it cannot be said that it is good for health.Also, when operating combustion appliances etc. in such a closed room, Similarly, a large amount of combustion gas is generated, which is extremely unsanitary.

In order to eliminate the above-mentioned inconvenience, the present invention is designed to shift the air conditioner from the normal operating state (cooling/heating/air blowing) to the ventilation operating state when the indoor air pollution reaches a certain level during operation of the air conditioner. The present invention provides an air conditioner with an automatic ventilation function.

The present invention will be explained in detail below based on the drawings.

Fig. 1 is a characteristic diagram of a sensor used in the air conditioner with automatic ventilation function according to the present invention, Fig. 2 is a circuit diagram showing a specific example of the air conditioner with automatic ventilation function according to the present invention, 3
The figure is an operation explanatory diagram for explaining the operation in the same circuit,
FIG. 4 is an explanatory diagram of the operation of the air conditioner with automatic ventilation function.

The 7-year-old used in the present invention has characteristics as shown in FIG.

In other words, the resistance value of the sensor in clean air is high, and when the atmosphere is contaminated, the resistance value decreases.
Another characteristic is that the resistance value decreases differently depending on the degree of contamination.

Therefore, after using the characteristics of this sensor to memorize the clean air condition immediately after the air conditioner starts operating, if the signal level at this time is 100% and the signal level reaches, for example, 90%, the normal operating state (cooling, heating, The reduction state of the ventilation signal condition is constantly monitored so that the ventilation operation is started from the start of the ventilation operation.
(see figure), ventilation operation is performed when the atmosphere reaches a ventilation level (absolute ventilation level) lower than the normal ventilation level, and after the air has been purified to a certain extent, the initial air condition is restored again. If you make it memorize,
The indoor air condition will be kept clean at all times.

Next, a specific circuit example of the present invention will be explained in detail with reference to FIG. 2. In this FIG. 2, ■ is a control circuit that performs various controls;
2,19 transistors, 3,54 are OR gates,
4, 6, 7, 8. 24 to 30 are controllers, 5 is a counter for storing initial air level, 9 is a ventilation sensor circuit equipped with a sensor having the above characteristics, 10 to 18, 20,
21, 23, 31-48.50-53 is resistance, 22,
55 capacitor, 49 is a variable capacitor, and in the circuit shown in FIG. 2, at the same time as the air conditioner is operated, the control circuit 1 outputs an initial air level reading signal, turns on the transistor 2, and turns on the OR gate 3. Clear terminal CLE of counter 5 for initial air level storage via
The counter 5 starts counting as AR changes to H-+L level.

Comparator 4 is resistor 13, 14, 15, 16゜1, e
i, constitutes an oscillation circuit together with a capacitor 55, etc., and sends its oscillation output to the clock terminal CLOCK of the counter 5.
is supplied to. Therefore, the counter 5 counts in accordance with the inversion of the comparator 4, and sequentially sets the outputs Q, -Q7 to the rHJ level according to the content of the count.

Therefore, the + side input terminal of the comparator 6 has a voltage determined by the states of the outputs Q, -Q7 of the resistor 45, the resistors 46 and 47 connected in series, the resistors 31 to 44 connected in parallel to these, and the counter 5. occurs. That is, the voltage at the ten input terminals of the comparator 6 rises in a stepwise manner as shown in FIG. 3 in response to changes in the outputs of the output terminals Q1 to Q7 as the counter 5 counts up.

At this time, when the voltage level of the comparator 6 matches the voltage level of the ventilation sensor circuit 9, the output of the comparator 6 becomes "H" level, and the transistor 19 is turned off.
The clock signal from the comparator 4 is blocked and the count contents of the counter 5 are held. Therefore, the input voltage of the controller 6 does not change after this point, and the indoor air level at the beginning of one turn of the air conditioner is stored. After that, if the air in the room becomes highly contaminated due to overcrowding, cigarette smoke, various harmful gases, etc., the ventilation level will be increased to the ventilation level based on the ratio of the partial pressure set by the resistor 46 to the initial memory level. When the sensor voltage rises, the comparator 7
The output is set to rHJ level, and a signal for performing ventilation operation is transferred to the control circuit 1 via the OR gate 54. Therefore, the air conditioner shifts from normal operation to ventilation operation in response to this signal.

In addition, if the air level is severely disrupted from the time when the air level is initially stored, the initial air level of the ventilation sensor on one side of the conoparator 8 will reach the level of the input voltage divided by the resistors 49 and 50 or less. In this case, the output of the comparator 8 is at the barHJ level, and the ventilation operation signal is transferred to the control circuit 1 via the OR gate 54.

In this case, the initial memory circuit of the counter 5 sets the initial value to the very dirty state of the air, so the comparator 8
When the output reaches the rHJ level, the counter 5 is reset once through the OR gate 3, and then the comparator 8 is reset.
A differential is provided with five resistors, and when the air is recovered after taking the width of the differential where the air is contaminated, the output of the comparator 8 becomes rLJ level, and the clear terminal CLEARt- of the counter 5 is passed through the OR gate 3.
The air level is set to H-+L, and the color/liquid 5 starts counting again and stores the initial air level. Further, by changing the variable resistor 49, the absolute ventilation level can be changed freely, which is very convenient.

When the above explanation is viewed as an air conditioner, it becomes as shown in Fig. 4. That is, when the air conditioner is operated at time t, the A level in the figure becomes the initial air level. After that, when some kind of gas is generated (at the time of tzO), the circuit of the present invention decreases the resistance value of the sensor to a level of a certain ratio of the level of A (for example, 90%, B in the figure), and the sensor voltage decreases. In this case, the air conditioner shifts from normal operation (cooling/heating, ventilation) to ventilation operation (at time t3). After ventilation, if the indoor air condition improves with the above ventilation level (
tn) The air conditioner returns to normal operation from ventilation operation.

As mentioned above, Himi BA is equipped with a sensor that converts indoor air pollution into electrical signals and a ventilation sensor circuit that uses the electrical signals obtained by this sensor to detect indoor air pollution. The air conditioner stores a level of a pollution signal at an initial stage of operation of the air conditioner, and compares a ventilation level corresponding to a predetermined ratio of the stored level with the level of the pollution signal obtained through the sensor, Provided is an air conditioner with an automatic ventilation function that detects that the level of a pollution signal has reached the ventilation level and shifts from a normal operating state to a ventilation operation, and the air conditioner with an automatic ventilation function of the present invention According to the machine, it automatically detects indoor air pollution and performs ventilation without human intervention.
To eliminate discomfort when operating an air conditioner in a closed state, and also to be excellent in terms of health.

[Brief explanation of drawings]

Fig. 1 is a characteristic diagram of a sensor used in the air conditioner with automatic ventilation function according to the present invention, Fig. 2 is a circuit diagram showing a specific embodiment of the air conditioner with automatic ventilation function according to the present invention, 3
The figure is an operation explanatory diagram for explaining the operation in the same circuit,
Figure 4 shows the same automatic ventilation - ■ Agent Patent Attorney Aihiko Fukushi Figure 1 Procedural Amendment Document July 1980/Date I, IG Office Director's Palace 1, Indication of Case 2 Name of Invention Automatic Ventilation Functional air conditioner 3, relationship with the case of the person making the amendment Patent applicant address: Kumo 545, 22-22 Nagaike-cho, Abeno-ku, Osaka-shi Name (504) Sharp Co., Ltd. Representative: Ishi Haku Butsu Asahi 4 Agent address: 0545 Inu No. 22-22 Nagaike-cho, Abeno-ku, Osaka City, Vol. 6, Subject of amendment (1) Detailed description of the invention in the specification column 7, Contents of amendment (1) Page 4, line 6 to line 7 of the specification Eyes “4゜6.
7.8.24-30 are comparators r4, 6, 7.
8 is a comparator, and 24 to 30 are buffer-1 for correction. (2) "49 is a variable capacitor" on page 4, line 11 of the specification is corrected to "49 is a variable resistor."that's all

Claims (1)

[Claims] 1. An air conditioner equipped with a sensor that converts indoor air pollution into an electrical signal and a ventilation sensor circuit that uses the electrical signal obtained by this sensor to detect indoor air pollution. The level of the pollution signal at the initial stage of operation of the conditioner is memorized, and the ventilation level corresponding to a predetermined ratio of this stored level is compared with the level of the pollution signal obtained through the sensor, and the level of the pollution signal is determined to be the ventilation level. An air conditioner with an automatic ventilation function that detects when something is wrong and shifts from normal operation to ventilation operation.