JPS60129544A - Energy-saving control device for air conditioner - Google Patents

Abstract

PURPOSE:To permit to obtain a comfortable property and effect energy saving by a method wherein the average temperature of a room and the range of comfortable temperature are compared to control a room temperature. CONSTITUTION:The average temperature of a room, measured by an average room temperature sensor 1, is inputted into a decision circuit 4 through a room temperature inputting unit 2 while the upper limit temperature TH and the lower llmt temperature TL of the range of comfortable temperature, predetermined for summer and winter separately, are inputted from a preset temperature inputting unit 5 into the decision circuit 4. A mode switching unit 6 is provided with changeover contacts S, W to constitute the device so as to be capable of switching the mode in accordance with the seanson of summer or winter, therefore, correct and comfortable control may be effected.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] [Prior Art] Various improvements have been made in order to control room temperature within a predetermined range using an air conditioner and to achieve comfort and energy savings. However, conventionally, for example, the following methods have been adopted.

In other words, a comfortable temperature range is set for each season, summer and winter, and the air conditioner is started and stopped at the upper and lower limits of this range.In particular, in order to save energy in the air conditioner, the stop time of the air conditioner is set. The timer is set so that it is repeated intermittently for a certain period of time.

In such cases, a temperature sensor based on a resistance temperature element is generally used to detect the room temperature, which is the basis for sending a start/stop discrimination signal to the air conditioner. Measuring the temperature and determining whether or not it is within the comfortable temperature range based on the measured value by comparing it with preset upper and lower temperature limits,
One nitrogen air conditioner is operated on and off for a predetermined period of time.

However, in the above case, when the air conditioner is stopped, the convection of the air in the room decreases, so there is generally not a large temperature difference between the center of the room where people are present and the wall where the temperature sensor is installed. In such a case, there is a problem in that comfortable room temperature control cannot be obtained even if the temperature is controlled based on the measured value by the temperature sensor on the wall surface.

[Summary of the invention]

The present invention has been made based on the above circumstances, and it is possible to measure the average room temperature of a room and compare this average room temperature with a preset comfortable temperature range to control the operation of an air conditioner, thereby improving comfort. An object of the present invention is to provide an energy saving control device for an air conditioner that can measure both energy saving and energy saving.
A room temperature input device for manually inputting the average room temperature measured by this sensor, a set temperature manual device for setting the upper and lower limit temperatures of predetermined comfortable temperature ranges for summer and winter, and the room temperature sensor. A discrimination circuit that compares the average room temperature measured with the upper and lower limits of the comfortable temperature range and sends a start-stop output signal to the air conditioner, and a discrimination circuit that compares the average room temperature measured by This is an energy-saving control device for an air conditioner, characterized by having a seven-way switching device for reversing the start-stop order.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the attached figure (2).

FIG. 1 is a block diagram showing an energy saving control device for an air conditioner according to the present invention.

In the same figure, (1) rarely measures the propagation velocity of ultrasonic waves in the air using an average room temperature sensor, and since this propagation velocity depends on the temperature of the air, An ultrasonic wave average room temperature sensor is used to calculate the average room temperature.

The current average room temperature measured by the average room temperature sensor (1) is input to the determination circuit (4) via the average room temperature input device (2) f:. This judgment circuit (4) has an upper limit temperature TH and a lower limit temperature T of the comfortable temperature range for summer and winter, which are determined by the set temperature input device (6).
L is input.

Upper limit temperature TH1 lower limit temperature T defining this comfortable temperature range
L is determined based on the following considerations.

That is, as shown in the table above, in the summer, the air conditioner is installed so that it is in operation, that is, cooling operation, at the upper limit temperature TH of the comfortable temperature range, and stops cooling operation at the lower limit temperature TL. Conversely, in winter, the air conditioner is set so that it is in operation, that is, heating mode, at the lower limit temperature □°TL of the comfortable temperature range, and is in the operating state at the upper limit temperature TH'''cJL.Moreover, these upper limits Temperature TH1
Lower limit The lower limit is set to a different value in summer and winter, taking into consideration comfort levels.

The above upper limit temperature TH1 lower limit temperature T set in advance
The determination circuit (4) compares L and the average room temperature T, and sends a start command signal S or a stop command S2 to the air conditioner (not shown) via the mode switching device (6). .

The mode switching device (6) has switching contacts S and W, and is configured so that by switching the movable contact M to either the switching contact S or W, the summer or winter mode is switched.

For example, switching contact S side f: summer, switching contact w11111f
: It is assumed to be winter, and therefore the illustration is set to be in summer mode.

In this case, the upper limit temperature TI of the comfortable temperature range (and the average room temperature T
If T□≧TH, then give a start command signal S to the air conditioner. Also, compare the average temperature T□ and the lower limit TL, and if T□≦TL, air conditioner 1. Give the machine a stop command signal S.

The on/off control of the air conditioner is performed by these start command signal Syu and stop command signal S2, and this situation is illustrated in FIG. 2.

In other words, in Figure 2, the horizontal axis shows time (min) and temperature (°C).
, Tl is the average room temperature, TH is the upper limit temperature, TL is the lower limit temperature, α is the control temperature curve, β is the operating time of the air conditioner, and the upper limit temperature TH and the lower limit temperature TL are the limits. Off control is performed. In this case, at time t, the upper limit temperature TH is exceeded, but since intermittent operation is performed at predetermined time intervals, the air conditioner does not reach the layer-resistant state (in the case of leather) until time t2. Therefore, the total of t-t to t2 becomes energy saving.

In addition, in the case of the winter mode, which is different from the above summer mode, the upper limit temperature TH of the comfortable temperature range and the average room temperature T are compared, and if T1≧TH, a stop command signal S2 is given to the air conditioner, and The average room temperature T is compared with the lower limit temperature TL, and if T≦TL, a start command signal S is given to the air W@Oro machine.

In addition, the above upper limit temperature TH1 lower limit temperature TL and summer,
For example, enter winter mode from the keyboard and memorize it.
The determination circuit (4) may be used to compare it with the average room temperature T.

Furthermore, the above circuit configuration can be modified in many ways, such as by using a central processing unit (cpU) or by providing independent circuit configurations. Furthermore, in the above embodiment, the upper and lower limits of the comfortable temperature range were set, but it is also possible to set a target temperature, for example, a median value of 1 point, and a temperature range (dead band) above and below -=. .

〔Effect of the invention〕

As described above, the present invention measures the average room temperature of the room and controls the on/off operation of the air conditioner based on this average room temperature, which is different from the conventional method of measuring and controlling the temperature near the wall surface. Unlike the conventional method, accurate and comfortable control is possible, and accurate on-off operation corresponding to the temperature range to be controlled is possible, and energy saving can be achieved.

4 4 Brief explanation of the drawings Figure 1 is a block diagram of the energy-saving control device for an air conditioner according to the present invention, and Figure 2 shows the relationship between the control temperature and the operating status of the air conditioner. Figure 0 (1): Average room temperature sensor (2) Average room temperature input device (4) Judgment circuit (5) Setting temperature input device (6) Mode switching device Start up Command signal S...Stop command signal agent Ruo Oiwa

Claims (1)

[Claims] An average room temperature sensor that measures the average room temperature in a room, a room temperature input device for reading the average room temperature measured by this sensor, and upper and lower limits of the predetermined comfortable temperature range for each summer and winter season. and a discrimination circuit that compares the average room temperature measured by the room temperature sensor with the upper and lower limits of the comfortable temperature range, and sends an output signal to start/stop the air conditioner. 1. An energy-saving control device for an air conditioner, comprising: and a mode switching device that reverses the start-stop order of the air conditioner depending on the winter season.