JPS61105046A - Air conditioner - Google Patents

Abstract

PURPOSE:To shorten the rising time of a room temperature, by a method wherein when the difference of the set temperature and the room temperature is large, the room air after heat exchanged is blown out from both blow off openings, the 1st and the 2nd blowers being rotated together. CONSTITUTION:At the 1st stage, at the rising time when the difference of the room temperature TA and the predetermined set temperature TS is large, the 1st and the 2nd dampers 9, 10 are opened as well as the 1st and the 2nd blowers 7, 8 are driven at the highest revolution to increase the air flow of the room air after heat exchanged, and warm air is made to blow out from both blow off openings. When the room temperature TA rise, and the temperature difference DELTAt1 becomes small, the 1st blower 7 is stopped as a 2nd stage as well as the 1st damper 9 is closed so as warm air is blown off only from the lower blow off opening 3. When the room temperature TA furthermore rises, the revolution of the 2nd blower 8 is gradually reduced as the 3rd stage so as to reduce the blowing volume from the lower blow off opening 3.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an air conditioner that is equipped with an air outlet and a blower in the upper and lower parts of the air conditioner main body, and in particular, by controlling the rotation speed of the blower. Indoor air is sent after heat exchange according to the temperature difference between the indoor temperature and the set temperature! @ Concerning air conditioners that can vary the amount.

[Technical Background of the Invention and Problems thereof] Floor-standing air conditioners, which are placed on the floor of a room to perform air conditioning, are generally known as air conditioners.

FIGS. 7 and 8 illustrate the floor-standing type. As shown in the figure, an air conditioner main body 1 is provided with an upper outlet 2 and a lower outlet 3 at its upper and lower parts for blowing out indoor air after heat exchange. Further, a suction port 4 for sucking indoor air is formed between these blow-off ports 2°3.

A passage 5 connecting the outlet 2.3 and the inlet 4 is formed in the main body 1. The passage 5 includes a heat exchanger 6 for exchanging heat with indoor air, an upper blower 7 and a lower blower 8 for blowing out the indoor air after heat exchange, and an upper damper 9 and a lower damper 10 for opening and closing the ventilation passage 5. It is provided.

By the way, in order for this type of heat pump type air conditioner having an upper outlet 2 and a lower outlet 3 to perform comfortable air conditioning, warm air is blown out from the lower outlet 3 during heating, and conversely, warm air is blown out from the upper outlet 2 during cooling. It is desirable to blow out colder air.

Therefore, conventionally, when cooling, the lower f
The f1 aircraft 8 was stopped, the lower damper 1o was closed, and cold air was blown out from the upper air outlet 2.

In addition, during heating, contrary to cooling, the lower blower ff1l17 is stopped, the upper damper 9 is closed, and warm air is blown out from the lower air outlet 3, as shown in FIG.

However, although two blowers 7 and 8 are provided, these blowers 7 and 8 are separately distinguished for cooling and heating, and therefore one blower
．． There was a problem that 8 was not being utilized effectively. Furthermore, as mentioned above, during heating, for example, warm air is blown out from only the three lower air outlets, which limits the air volume.Especially at startup (starting operation), it is difficult to raise the indoor temperature to the desired temperature and stabilize it. There are problems in that it requires a long time and consumes a lot of power.

[Object of the Invention] The present invention was devised to effectively solve the problems in conventional air conditioners.

The purpose of the present invention is to shorten the operating time when the indoor temperature rises, and also to effectively utilize the blower according to the difference between the set temperature and the indoor temperature, and to provide an air blower that can save energy. Our goal is to provide a harmonizing machine.

[Summary of the Invention] In order to achieve the above object, an upper air outlet formed in the upper part of an air conditioner main body, a lower air outlet formed in the lower part of the main body, and a heat exchanger with the upper air outlet are provided. a first blower installed in the passage between the lower air outlet and the heat exchanger for blowing out indoor air after heat exchange; and a first blower installed in the passage between the lower air outlet and the heat exchanger for blowing out the indoor air after heat exchange. Second sending J
i1 machine, when the difference between the room temperature or the heat exchanger temperature and the preset set temperature is large, air is blown from the upper and lower air outlets, and the blower is driven at the maximum rotation speed, while the temperature difference is A blower control means for blowing air from one of the air outlets when the air is small, stopping the blower on the closed side, and reducing the rotational speed of the blower on the open side to control the amount of air blown. It is composed of

[Embodiments of the invention] An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

A floor-standing heat pump air conditioner is constructed as shown in FIG. 1, for example.

As shown in the figure, an air conditioner main body 1 is provided, and the main body 1 has an upper air outlet 2 and a lower air outlet 3 at its upper and lower parts, respectively, for blowing indoor air after heat exchange into the room. It is formed. Further, a suction port 4 for sucking room air is formed between the air outlets 2 and 3.

Inside the main body 1, a passage 5 is formed along the back surface of the main body 1, connecting the inlet 4 and the outlet 2.3.

This passage 5 is provided with a heat exchanger 6 for exchanging heat with indoor air sucked through the suction port 4.

Further, each of the air outlets 2 and 3 is provided in the passage 5 and has a first damper 9 and a second damper 10, respectively, for controlling the opening degree thereof.

Also, a first air supply J! for blowing out the indoor air after heat exchange from the upper air outlet 2! A second blower 7 is provided in the passage 5 between the upper blower outlet 2 and the heat exchanger 6, and is a second air blower for blowing out the indoor air after heat exchange from the lower blower outlet 3.
m8 is provided in the passage 5 between the lower outlet 3 and the heat exchanger 6.

In particular, in the present invention, the first and second dampers 9,
A blower means is provided for controlling the opening degree of 10 and the rotational speed of the first and second blowers 7.8. This blower control means includes a heat exchanger temperature sensor 11 that detects the temperature TC of the heat exchanger 6, and a suction port 4.
It mainly consists of an indoor temperature sensor 12 that is installed in the room and detects the indoor temperature TA, a comparison control device, and a setting input circuit.

Specifically, for example, during heating, the rotational speed of each blower 7.8 and the opening degree of each damper 9.10 are controlled as follows.

First, in the first stage, if the difference between the indoor temperature TA and the preset temperature Ts (TA<TS) is large (at the time of startup), the first stage and the second damper 9°10 is opened and the first damper is opened.
The second blower 7.8 is driven at the maximum rotational speed to blow out warm air from both air outlets 2.3. The maximum amount of air from both outlets 2.3 is blown into the room, raising the indoor temperature TA.
When the difference Δtl between the temperature and the set temperature TS becomes smaller, the first blower 7 is stopped as a second step, the first damper 9 is closed, and the warm air is blown out only from the lower air outlet 3. .

When the indoor temperature rl TA further rises and the difference Δt2 (Δ[1>Δtz) from the set temperature Ts becomes smaller, the third stage is to start the second blower JIli18 in order to reduce the amount of air blown from the lower air outlet 3. The number of revolutions of the engine is sequentially reduced.

When the room temperature TA rises sufficiently and the temperature TA reaches a range of ±1°C of the set temperature TS, the compression of 1 m (not shown) is stopped in the fourth stage to prevent heat buildup inside the main body 1. The second blower 8 is configured to rotate for a certain period of time and then completely stop. From then on, indoor temperature TA
deviates from the range of the set temperature TS ± 1°C, the above-mentioned first
The configuration is such that control at the third stage to third stage is performed.

FIG. 2 shows a block diagram for controlling the rotational speed of each of the feeders 8 and 9 and the opening degree of each damper 9 and 10.

As shown in the figure, a central processing unit w (CPU) 13 is provided, and a setting input circuit 14 and a comparator 15 are connected to this central processing unit 13. The setting input circuit 14 inputs the operating mode (cooling or heating) and the preset temperature TS.
is entered.

In addition, an indoor temperature sensor 12 and a heat exchanger temperature sensor 11
is connected to a comparator 15, and the comparator 15 performs a comparison calculation and transmits the room temperature TA and the heat exchanger temperature TC to the central processing unit 13.

In response to the transmission from the setting input circuit 14 and the comparator 15, the central processing unit 13 makes a comprehensive judgment, and transmits the judgment via the relay driver 16 to the first and second dampers 9,
10, and the first and second blowers 7.8;
It is configured to control the opening degree and rotation speed of these.

In this embodiment, each feed aI! The rotation speed of l17, 8 and the opening degree control of each damper 9, 10 are not limited to the difference between the indoor temperature TA and the set temperature TS, but are performed based on the difference between the heat exchanger temperature TO and the set temperature TS. It may be configured as follows.

Next, the operation of the present invention will be explained.

FIG. 3 shows a flowchart during heating. First, the operation switch of the air conditioner is turned on.

When the operation switch is turned on, the difference between the indoor temperature TA and the set temperature TS±1°C is determined, and TA ≦TS±
If the temperature is less than 1°C, the difference between the indoor temperature TA and the set temperature TS is further determined. This indoor temperature TA
The compressor is driven when the difference between the temperature and the set temperature TS becomes TA - TS.

When the compressor is driven and the temperature TC of the heat exchanger 6 rises, and the heat exchanger temperature TC exceeds a constant T' (for example, 35°C), both the first and second dampers 9.10 are opened. At the same time, the first and second blowers 7.8 are both driven. At this time, the rotation speed of the first and second feed 1!1li7.8 is increased from H to H2, and the maximum rotation speed H3 (H
<l-1t <82 <83). Therefore, the maximum amount of air is blown into the room from both air outlets 2.3, causing the room temperature TA to rise rapidly.

In this way, warm air is blown out from both air outlets 2.3, the indoor temperature TA rises, and TA decreases Ts+△j1
(Constant of Δt t −TS −TA) is satisfied, the first damper 9 and the first transmission/! One machine 7 comes to a halt, and warm air is blown out from the lower air outlet 3.

Warm air is blown out from the lower air outlet 3 and the indoor temperature reaches TA.
further increases, and TA<Ts +Δt z (Δt 2
-Ts-7A When the constant Δ[1 × Δ[2] is satisfied, the second transport Jl1 machine 8 changes from its maximum rotational speed H3 to H2.

The rotational speed is sequentially reduced to Hl. Therefore, the warm air blown into the room from the lower outlet 3 is weakened, and at the same time, the rise in the room temperature TA is also slowed down.

The indoor temperature TA slows down and rises further until TA ≦
When the temperature reaches TS±1°C, the drive of the compressor (not shown) is stopped, and the second blower 8 rotates at a low speed from H to Hl for a certain period of time to remove the heat trapped inside the main body 1. It turns out. After the second air blower R8 rotates for a certain period of time, it comes to a complete stop, and it is determined again that TA≦Ts±1°C, and the above process is performed again.

In this way, the present invention allows the first and second feed Ju
By driving one machine 7.8, setting its rotation to the maximum rotational speed, and blowing out the indoor air after heat exchange from both the blow-off ports 2 and 3, the start-up time can be shortened. Specifically, the time can be shortened from the usual 40 minutes to 20 minutes. Furthermore, shortening the rise time reduces power consumption, and energy savings (30% reduction) can be achieved.

Furthermore, when the indoor temperature TA approaches the set temperature Ts, air is blown only from the lower air outlet 3, which provides a foot-warming effect and enables air conditioning with improved comfort. Furthermore, when the indoor temperature TA rises to near the set temperature TS, the control of the first and second air blowers 117.8 becomes finer, so that changes in the indoor temperature TA can be reduced.

In the above embodiment, the first and second dampers 9 and 10 are provided, but it is also possible to provide only the second damper 10. In this case, the second blower 8 is driven together with the first blower If17. For example, during heating operation, both the first and second blowers 7.8 are driven at the maximum rotational speed at the time of startup, and when the set temperature Ts is approached,
The same effect as described above can be obtained even if the first blower 7 is driven at low speed rotation and the second blower 8 is sequentially driven at low speed in stages.

In addition, although the above embodiment mainly describes the heating operation, it goes without saying that during the cooling operation, the air blown from the lower air outlet 3 during the heating operation becomes air blown from the upper air outlet 2, and the same effect can be achieved. It is.

[Modified Embodiment] FIGS. 4 and 5 show a modified embodiment of the present invention.

In FIG. 5, reference numerals 17 and 18 indicate a first motor and a second motor for driving the first blower 7 and the second blower 8 from one end side, respectively. These motors 17.18
For example, a PE motor such as a transistor motor or an induction motor is used so that the rotation of the first blower 7 or the second blower 8 can be varied for one or both of them.

In the air conditioner configured in this way, the indoor temperature T
When the difference between A and the set temperature Ts is large, both the first motor 17 and the second motor 18 are driven at R high rotation speed. Furthermore, when the above-mentioned temperature becomes low, for example, during heating, the lower second motor 18 is operated at a low speed, and the upper first motor 18 is operated at a low speed.
By reversing the motor 17 to prevent indoor air from flowing through the upper Suita outlet 2 to the lower outlet 3, warm air with a controlled air volume is blown into the room from the lower outlet 3. . Note that during cooling, contrary to the above description, cool air with a controlled air volume is blown into the room from the upper air outlet 2.

Figure 6 shows a block diagram for each air conditioner shown in Figures 4 and 5, which includes one compressor, the first motor (the first
Sending f@R>7. Second motor (second feed ff1l) 8
, four-way valve 20. The outdoor fan 241 is controlled by the central processing unit (CPLI) 25 via the power relay 22 and the miniature relay 23 and further via the relay driver 24 as described above.

In FIGS. 4 to 6, when one blower 8 is operated at low speed, the other blower 7 is reversed, so the other blower ff117 acts as a damper, so it is possible to substantially omit a damper. becomes.

Moreover, the upper blower outlet 2 and the lower blower outlet 3 can be freely selected, reducing costs and improving productivity.

(Effects of the Invention) In summary, the present invention exhibits the following excellent effects.

■ When the difference between the set temperature and the indoor temperature is large, the first and second blower machines are rotated together and the indoor air after heat exchange is blown out from both outlets, thereby reducing the time it takes for the indoor temperature to rise. It is possible to reduce energy consumption and achieve energy savings.

(2) During heating, when the room temperature approaches the set temperature, warm air is blown out from the lower air outlet, which warms the feet and further improves comfort.

(3) By reducing the rotation of the fan when the indoor temperature rises close to the set temperature, changes in the indoor temperature once it has risen can be reduced.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing an air conditioner according to the present invention, Fig. 2 is a block diagram, Fig. 3 is a flowchart, Fig. 4 is a side view showing a modified example, and Fig. 5 is the same as Fig. 4. Fig. 6 is a block diagram, Fig. 7 is a sectional view showing a conventional air peace machine during cooling, and Fig. 8 is a sectional view showing a conventional air conditioner during heating. be. In the figure, 1 is the air conditioner main body, 2 is the upper outlet, 3 is the lower outlet, 5 is the passage, 6 is the heat exchanger, 7 is the first feed ff1
l! i, 8 is the second blower. Representative Patent Attorney Kensuke Chika (1 other person) Figure 3 Figure 4 Figure 5

Claims (2)

[Claims] (1) An upper air outlet formed at the upper part of the air conditioner main body, a lower air outlet formed at the lower part of the main body, and a passage between the upper air outlet and the heat exchanger after heat exchange. a first blower for blowing indoor air of Blower control means that drives both the first and second blowers when the temperature difference between the chamber temperature and a preset temperature is large, and drives either one of the blowers when the temperature difference is small. An air conditioner characterized by comprising: (2) The blower control means is configured to rotate both blowers at a maximum speed when the temperature difference is large, and to rotate one of the blowers at a low speed according to the temperature difference when the temperature difference is small. An air conditioner according to claim 1 above.