JPH03271648A - Air-conditioner - Google Patents

Abstract

PURPOSE:To make it possible to bring temperature in a room gradually to the outside air temperature by a method wherein timers which set the time from the start of air-conditioning stop operation to the complete stop and the elapse of time in steps, and a control circuit are provided, and the title air- conditioner is controlled in such a manner that temperature in the room changes by a set temperature value at every period of time in steps. CONSTITUTION:A timer which sets a period of time from the start of air- conditioner stop operation to the complete stop and a step value which sets a step value during this period of time are provided on a control unit 6 in a row, and a control circuit, which controls the air-conditioner in such a manner that the air-conditioning function completely stops upon elapse of a set time, by setting a room temperature change for every step and changing the temperature in the room in steps according to this temperature change upon elapse of time, is provided on the control unit 6. By this constitution, when the air- conditioning function of heating and cooling is stopped, by lowering a comfortable temperature set value on the control unit by, e.g., 2 deg.C every 10 minutes by the control circuit, it is made possible to bring the temperature in the room slowly to the outside air temperature in a time interval of 1 hour.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an air conditioner.

[Prior Art] A conventional air conditioner has a configuration as shown in FIG. 2, and includes an air filter 1, a cooler 2, a humidifier 3, a heater 4, an air blower 5, a control device 6, and a humidity sensor. 7. A room 1 equipped with a temperature sensor 8 etc. and air-conditioned with a blower 5 by an air supply duct 9
1 is connected, and an indoor air 11 that is air-conditioned by a return air duct 10 is connected to an outside air intake section 12, and the air is sent to the air filter 1. Further, the control device 6 controls the generation of cold water, steam, and hot water necessary for air conditioning from ordinary water.

When the air conditioner cools the room 11, the cooler 2
When heating the room 11, the heater 4 is operated and the cooler 2 is paused.

In addition, the air in the room 11 is sequentially converted into a return air duct 10.
A part of the air is discharged to the outside air through the air filter 1, and is sent to the air filter 1 together with other ring air and the outside air taken in by the outside air intake part 12 to remove dust, etc. In the case of cooling the room 11, this air is sent to the cooler. 2, cooled with cold water so that the temperature approaches the comfortable temperature set by the control device 6, and sent to the humidifier 3. The humidifier 3 adds the generated steam to the air to have an appropriate humidity, and sends the air to the blower 5 via the heater 4 which is inactive.

The blower 5 sends this air to the room 11 to be air conditioned. In addition, in the case of heating the room 11, the air passing through the air filter l passes through the inactive cooler 2, is given an appropriate amount of moisture in the humidifier 3, and is sent to the heater 4. The air is heated with hot water or steam so that the temperature of the air approaches the comfortable temperature set by the control device 6, and is sent to the blower 5, which sends this air to the room 11 to be air-conditioned. The temperature and humidity of the indoor air are detected by the temperature sensor 8 and the humidity sensor 7, respectively, and are notified to the control device 6, and compared with the comfortable temperature and comfortable humidity set by the control device 6, so that they match. The air conditioner operates so that the following actions are performed repeatedly.

Furthermore, when it is desired to stop the air conditioning, if the operation of the air conditioner is stopped by a manual switch operation, the air conditioner immediately stops cooling or heating the indoor air. Therefore, although it is desired that the indoor temperature approaches the outside temperature over a long period of time, as shown by the straight line 6 in FIG. 3, the indoor temperature rapidly approaches the outside temperature as shown by the curve a in FIG.

[Problem to be solved by the invention]

In the conventional air conditioner described above, since there are no steps in the stopping operation, the operation immediately stops when the air conditioner is stopped. Therefore, when the temperature difference between the outside air and the room is large, there is a drawback that the indoor temperature changes rapidly in order to reduce the difference between the outside air temperature and the outside air temperature, as shown by curve a in FIG. 3, in both heating and cooling systems.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an air conditioner that eliminates the above-mentioned drawbacks and stops operating by gradually bringing the indoor temperature closer to the outside temperature rather than suddenly.

[Means for Solving the Problems] An air conditioner of the present invention includes: a timer for setting a time from the start of the operation stop of the air conditioner to a complete stop and a step value of this time; Set a temperature value for changing the indoor temperature at each step until a complete stop, and change the indoor temperature step by step according to this temperature value and the step value of the time to change the time from the start of the operation stop to the complete stop. A control circuit is provided to control the air conditioning operation so that the air conditioning operation stops when the time elapses.

[Effect] In this way, the time from the start of operation stop to complete stop,
Set the step value of this time and the value of the room temperature to be changed at each step, and change the indoor temperature step by step according to the set steps and temperature changes as time elapses from the start of operation stop to complete stop. Make the temperature equal to the outside temperature.

[Example] Next, an example of the present invention will be described with reference to the drawings.

In this embodiment, the following equipment and circuits are added to the air conditioner shown in FIG. 2.

(1) A timer is installed in parallel to the control device 6 to set the time from when the air conditioner starts to stop until it completely stops, and the step values for this time.

(2) Set the temperature value that changes the indoor temperature at each stage from the start of the air conditioner's operation stop to the complete stop, and set the indoor temperature by changing it step by step according to this temperature change value and the passage of time. A control circuit is installed alongside the control device 6 to control the air conditioning operation to completely stop after the specified time has elapsed.

Then, by adding the operations of the timer and control circuit added as described above to the conventional operation of the conventional air conditioner shown in FIG. It will operate as a machine.

Next, the operation of this embodiment will be explained with reference to the drawings.

FIGS. 1(a) and 1(b) are diagrams showing how the indoor temperature changes when the air conditioning operation is stopped in the case of heating and cooling, respectively, in an embodiment of the present invention. Figure 1 below (
The case of heating in a) will be explained. The outside temperature is about 6℃
The indoor temperature is maintained at 18° C. because the comfortable temperature is set at 18° C. by the control device 6. If the air conditioner is stopped at this point, with a conventional air conditioner, the indoor temperature will rapidly approach the outside temperature, as shown by curve a in FIG. 1(a), and the room will cool down rapidly.

Therefore, in this example, the control circuit lowers the comfortable temperature setting value of the control device by 2° C. every 10 minutes, thereby allowing the indoor temperature to slowly approach the outside temperature over an hour. The curve in FIG. 1(a) shows this.

The principle is exactly the same for air conditioning.

[Effects of the Invention] As explained above, the present invention improves the time from the start of air conditioning operation stop to complete stop and the time it takes for a conventional air conditioner to stop.

A timer and a control circuit are added to set the time elapse in stages, and the control circuit sets the value of the indoor temperature to be changed at each step time, and when the air conditioner is stopped, the indoor temperature changes in steps. By controlling the temperature to change by a preset value at each time, the air conditioner is effectively stopped so that the indoor temperature gradually approaches the outside temperature rather than suddenly.

[Brief explanation of drawings]

FIG. 1 is a diagram showing how the indoor temperature changes when air conditioning operation is stopped in the case of heating or cooling in an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional air conditioner. FIG. 3 is a diagram showing an example of how the indoor temperature changes when a conventional air conditioner is stopped, and an example of an ideal change. 1...Air filter, 2...Cooler,
3... Humidifier, 4... Heater,
5... Air blower, 6... Control device, 7... Humidity sensor, 8... Temperature sensor, 9... Air supply duct , 10...
Circulating air duct, 11...Indoor, 12...
...Outside air intake section.

Claims (1)

[Claims] 1. In an air conditioner, a timer for setting the time from the start of the operation stop to a complete stop of the air conditioner and a step value of this time, and a timer for setting the time from the start of the operation stop to the complete stop, and a timer for setting the time from the start of the operation stop to the complete stop, A temperature value for changing the indoor temperature is set, and the indoor temperature is changed stepwise according to the temperature value and the step value of the time so that the air conditioning operation stops when the time elapses from the start of the operation stop to the complete stop. An air conditioner comprising: a control circuit for controlling the air conditioner;