JPH0141892B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION An object of the present invention is to provide an air blowing device that automatically operates by detecting the temperature or temperature difference between two spaces.

Conventionally, the amount of heat collected in a south-facing room that is heated by sunlight during the winter is often enough to heat the entire room. In addition, if you want to use an air conditioner for one room to slightly cool or heat an adjacent room, or if you want to take in air only when the outside air is cold at night during the summer, install a blower such as a ventilation fan or wind fan between rooms or outdoors. It is a good idea to exhaust the area. However, simply operating the blower requires humans to consider and make decisions regarding detailed control, as in the three examples above. Therefore, in this case, it is difficult to find the optimal conditions for comfort and efficient use of energy, and in practice, it is cumbersome to turn on and off the blower each time, so it is necessary to install a blower equipped with some kind of automatic control device. was desired.

The present invention aims to provide an air blower that can satisfy the above-mentioned needs, and will be described below based on drawings showing embodiments thereof. FIG. 1 shows an example of a blower system according to the present invention, and here, an example is shown in which a blower 4 is provided on a wall 3 between a first chamber 1 and a second chamber 2 which are adjacent to each other. 5 is a first temperature sensor, 6 is a second temperature sensor, and the blower 4 is controlled by a control device 7.

Now, assume that the first room 1 is a room facing south and collecting a large amount of solar radiation. If it is desired to introduce even a small amount of heat from the first chamber 1 into the second chamber 2 during winter, the blower 4 may be used to blow air in the direction shown by the arrow in FIG.
However, if there is no difference between the temperature T _B of the first chamber 1 and the temperature T _A of the second chamber 2, blowing air has no effect.
Blowing air when T _A < T _B is effective. Therefore, only when T _A is detected by the second temperature sensor 6 and T _B is detected by the first temperature sensor 5 and the temperature difference exceeds a certain level, the controller 7 sends the blower 4
A signal is generated to drive the .

FIG. 2 shows its operating characteristics, with T _A on the horizontal axis and T _B on the vertical axis. Broken line A is the line of T _A = T _B and is the line of blower 4.
does not rotate. Straight line B indicates the case where T _B is higher than T _A by ΔT, and when the temperature is above this line, for example at point C, the blower 4 is activated. Due to the operation of the blower 4, as shown by the arrow in FIG.
T _B decreases and T _A increases, approaching the line T _A = T _B. At this time, when the point C' is reached, the blower 4 stops. In this way, the amount of heat in the first chamber 1 is changed to the second chamber.
In this case, even if the temperature of the second room 2 rises too much, it will become hot and uncomfortable, so even if there is a temperature difference ΔT, T _A will be above a certain temperature (comfortable temperature T _A1 ), that is, point D in FIG. 2, the blower 4 is designed not to operate.

Furthermore, if the temperature T _B of the first chamber 1 becomes low, even if there is a temperature difference _ΔT , the air blown by the blower ₄ will feel cold and uncomfortable. At point F in the figure, the blower 4 does not operate.

An example of a specific circuit for realizing the above operating characteristics is shown in FIG. In this FIG. 3, 8 is a DC power supply, which connects the first temperature sensor 5 and the second temperature sensor 6.
and resistors 9 and 10 constitute a bridge. Here, an example is shown in which the first and second temperature sensors 5 and 6 each utilize a negative characteristic temperature-sensitive resistance element. The temperature difference detection part I is at the midpoint of the bridge e _A ,
It is composed of a comparator 11 (here, a 2-input open collector output comparator is used), with e _B connected to each input. Now, when T _A = T _B , the values of resistors 9 and 10 are set so that e _A < e _B , so the output of comparator 11 becomes low,
As a result, the output of the comparator 12 is also low, so
Transistor 13 does not conduct, resulting in relay 1
4 is not driven, the contact 15 of the relay 14 is open, and therefore the blower 4 is stopped.

Next, if only T _R increases while T _A remains the same, then
When the potential e _B increases and e _A ≦e _B , the outputs of the comparators 11 and 12 become high, and as a result, current flows through the resistor 16 to the base of the transistor 13, making the transistor 13 conductive.
As a result, the relay 14 is driven and the contact 15 is closed, so that the blower 4 is operated. That is, e _A
= e _B The difference between T _A and T _B is ΔT, which is T _B −T _A ≦ΔT
When this happens, the blower 4 operates.

Also, the figure shows the temperature limiting section, where the second temperature sensor 6, resistors 9, 17, and variable resistor 18 constitute a bridge, whose midpoint potentials e _A and e _C are connected to the input terminal of the comparator 19. connected and comparator 1
The output of 9 is connected to the output of comparator 11.
Now, if e _A <e _C , the output of the comparator 19 becomes high. In this case, since it is an open collector output, the output of the comparator 11 is not affected in any way. As the temperature T _A increases and e _A ≧ e _C , the output of the comparator 19 becomes low. At this time,
Even if the output of the comparator 11 is high, it is made low by the comparator 19, so the blower 4 does not operate even if the temperature difference ΔT is somewhat large. The value of T _A that satisfies this e _A = e _C becomes T _A1 in FIG. 2. Note that since the potential e _C changes by changing the variable resistor 18, the value of T _A1 can be adjusted as desired.

Further, the first temperature sensor 5, resistors 10, 20, and variable resistor 21 constitute a bridge, whose midpoint positions e _B and e _D are connected to respective inputs of a comparator 22. Now, when e _B >e _D , the output of the comparator 22 becomes low, and the input e _F of the comparator 12 is supplied by the resistors 23 and 24. On the other hand, when the output of comparator 11 is high, the output voltage is
5,26 gives e _G. In this case, e _G > e _F
Therefore, when the output of comparator 11 is high, the output of comparator 12 is also high. Here, when T _B decreases and e _B ≦e _D , the output of the comparator 22 becomes high. As a result, e _F becomes almost the positive potential of the power supply, so
Even if the output of the comparator 11 becomes high, the comparator 12 remains low and the blower 4 does not operate. This e _B
The value of T _B that satisfies = e _D becomes T _B1 in Fig. 2. In this case as well, the value of T _B1 can be arbitrarily adjusted using the variable resistor 21. In addition, resistance 2 in Fig. 3
7, 28, 29, 30 are respective comparators 11, 1
2, 19, and 22 positive feedback resistors.

As described above, the characteristics shown in FIG. 2 can be obtained by the AND circuit configuration of the maximum temperature of T _A , the minimum temperature of T _B , and ΔT.

Furthermore, a switching circuit is added to blow air in the opposite direction to the direction of the arrow in Figure 1 when the temperature T _A of the second chamber 2 becomes higher than the temperature T _B of the first chamber 1 in Figure 1. It is also easy to do.

Furthermore, even if the first room 1 is not a room that receives solar radiation from the south, there is also a method of utilizing heat from an air conditioner installed in the first room 1 to be sucked into the second room 2. Furthermore, in the embodiment, an example of heating in winter was explained, but a similar configuration is possible for cooling.
One cooling device can cool two rooms.

It can also be used as an outside air cooling device that detects outdoor temperature and sucks in cold air from outside when the indoor temperature is lower than _{T A.}

FIG. 4 shows another embodiment, that is, an example in which a blower 4' is connected by a duct 31 when the first chamber 1 and the second chamber 2 are not adjacent to each other.

As explained above, the blower device of the present invention has the following effects.

(1) Detect the temperature of the two spaces, operate the blower based on the temperature difference, and increase the amount of heat in the first space to the second space.
Since the configuration is such that the excess heat in the first space can be supplied to the second space, energy can be used effectively. Especially the first
If the space is a room that faces south and collects a lot of solar radiation, this collected solar energy can be sent to a room that has no solar radiation. Also the first
A wide range of applications can be considered, such as transmitting the amount of heat from air conditioning equipment installed in one room to a second room.

(2) A temperature limiting section is provided, and the blower is driven by AND logic between the temperature difference detected by the temperature difference detection section and the absolute value of each temperature in the first and second spaces of the temperature limiting section. Even if the difference is large, the blower will not operate if the absolute value of the temperature is not within the specified temperature range. This eliminates unnecessary energy transfer and at the same time eliminates the discomfort caused by blowing air at abnormally high or low temperatures, improving comfort.

(3) Since an adjustment device is provided to vary the maximum and minimum temperatures at which the first and second temperature sensors of the temperature limiter operate, it can be adjusted to suit the season, room conditions, differences in human senses, and preferences. You can adjust it to the optimal point according to your needs.

(4) The temperature difference signal from the temperature difference detection section of the control device and the temperature signals from the two temperature limiting sections shall be obtained from two temperature sensors, and each temperature setting value shall be constructed so that they do not affect each other. Therefore, the circuit configuration is simplified and the temperature setting value can be freely selected, making it easy to use.

[Brief explanation of drawings]

Fig. 1 is a system diagram of a blower device showing one embodiment of the present invention, Fig. 2 is a diagram of its operating characteristics, Fig. 3 is a circuit diagram showing a specific example of a control device, and Fig. 4 is a diagram showing another embodiment. FIG. 2 is a system diagram of the air blower shown in FIG. 1...First chamber (first space), 2...Second chamber (second space), 3...Wall, 4...Blower, 5
...First temperature sensor, 6...Second temperature sensor, 7...Control device, 9...Resistor (resistor connected in series with the second temperature sensor), 10...Resistor (first temperature sensor) resistance connected in series with the temperature sensor), 1
1...First comparator, 18...Second variable resistor, 19...Third comparator, eA...Second potential,
eB...first potential, eC...fourth potential, eD...
Third potential, 21...First variable resistor, 22...
...Second comparator, T _A1 ... Maximum temperature of the first temperature sensor, T _B1 ... Minimum temperature of the second temperature sensor,
...Temperature difference detection section, ...Temperature restriction section.

Claims (1)

[Claims] 1 thermally separated first and second spaces;
a blower that connects the two spaces and transmits the amount of heat in the first space to a second space; a first temperature sensor provided in the first space; and a second temperature sensor provided in the second space. a control device that drives and controls the blower according to a signal of a temperature difference detection unit that drives the blower by the output of a first comparator that detects a temperature difference between both temperature sensors by comparing a potential difference between second potentials divided by a resistor connected to the first comparator; a second comparator that detects the maximum temperature or minimum temperature of the first temperature sensor by comparing the first potential with a third potential determined by the first variable resistor; a third comparator that detects the maximum temperature or minimum temperature of the second temperature sensor by comparing the second potential with a fourth potential determined by a resistor; A blower device having a temperature limiting section configured to stop operation of the blower depending on an output of one of the comparators.