JPS63273749A - Room cooling and heating device - Google Patents

Abstract

PURPOSE:To make it possible to control temperature without feeling change in environment by a person who lives in a room by not stopping the operation at the time when the room temperature exceeds a set temperature but raising the operational capability by a certain value and stopping the operation at the time when the room temperature is below a certain temperature or above it. CONSTITUTION:The device is constituted electrically with an electric power source, temperature sensitivity sensor 2, A/D conversion unit 3, and switch section 4. Further the constitution includes a room cooling and heating capability calculation unit 5 with room cooling and heating capability setting and changing means and room cooling and heating capability generation device 6. During room heating operation, the room heating operation is made with a set temperature as a target but if the room temperature goes over a certain range of room temperature which has a set temperature as the center, the room heating capability is raised to 1.2 times the room heating capability in the present operation. When the room temperature reaches the temperature, the set temperature + alpha, the room heating operation is stopped. And, when the room temperature is below a certain range of room temperature which has the set temperature as the center, the room heating is restarted without prohibiting the start of the operation because the time of limitation in the standpoint of hard-ware is exceeded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an air conditioning system that provides a comfortable environment for residents at all times. This relates to air-conditioning equipment that prevents air-conditioning from occurring.

[Conventional technology]

Figure 4 shows the Mitsubishi room air conditioner catalog (September 1980).
This is an electrical configuration diagram of a conventional air-conditioning/heating system as shown in 2007 (created by May 2013), where l is a power switch, 2 is a temperature-sensitive sensor for detecting room temperature consisting of a thermistor or something similar, and 3 is an A/ In the D conversion device, 4 is a switch section for setting a set temperature and the like. 5 is a microcomputer;
It has an input circuit 7, a CPU 8, a memory 9, and an output circuit 10. The output of the switch section 4 and the output from the temperature sensor 2 are input to the input circuit 7 . Air conditioning capacity generator 6
is controlled by the output from the output circuit.

Next, the operation of the above-mentioned conventional air-conditioning and heating system will be described in the case of heating operation using the flowchart shown in FIG. When the power switch 1 is turned on, operation starts. A set temperature is set in step F1. In step F2,
The room temperature detected by the temperature sensor 2 is manually input. Next, in step F3, the temperature difference T is calculated from the set temperature and the room temperature, and in step F4, if the room temperature does not exceed the set temperature,
In step F5, based on the temperature difference △T, the heating capacity is calculated so that when the room temperature approaches the set temperature, the heating capacity is gradually increased, and when the room temperature drops to a certain level, the heating capacity is increased all the way. . According to the calculated heating capacity, the heating and cooling capacity generating device performs heating operation in step F6. However, if the room temperature is higher than the set temperature in step F4, the heating and cooling capacity generating device is turned off in step F7, and the heating operation is stopped. Then, when the room temperature falls below the set temperature again, heating operation is resumed. In this way, control is performed so that the room temperature is maintained approximately in the vicinity of the set temperature.

[Problem that the invention attempts to solve]

FIG. 6 shows the control characteristics when heating operation is performed in a conventional example, in which (a) shows a change in heating capacity, and (b) shows a change in room temperature. Conventionally, heating and cooling equipment constantly detects the room temperature and calculates the heating and cooling capacity based on the difference between the room temperature and the set temperature.If the difference is large, the heating and cooling capacity is increased, and if the difference is small, the heating and cooling capacity is decreased. The heating and cooling capacity generating device performs heating and cooling operation so that the room temperature is always maintained near the set temperature.

For example, in the case of heating operation, the heating operation is stopped when the room temperature becomes higher than a certain range (dead zone) centered on the set temperature. When the room temperature falls below this certain range, it would be fine if heating operation could be started again, but if operation cannot be started due to a hardware constraint that prohibits operation of the air-conditioning equipment for a certain period of time after stopping, the room temperature will drop significantly as shown in the figure. The temperature decreases to 100%, giving residents a feeling of “cold °′” in the shaded area.

Conversely, in the case of cooling operation, if the operation cannot be started due to hardware constraints, the room temperature will rise significantly above the set temperature, giving the occupants a feeling of ``hot''.

The present invention eliminates the drawbacks of conventional devices that give the occupants a feeling of being cold or hot due to this heart-related constraint.

[Means and effects for solving the problem] FIG. 7 shows the relationship between human thermal sensation and environmental temperature. As shown in the figure, in the temperature range where people feel neither hot nor cold, their thermal sensation becomes dull. In particular, this tendency is seen in response to heat during heating and to coolness during cooling. For example, during heating, people feel cold when the temperature drops, but when the temperature rises within the above range, people do not feel hot.

This invention solves the conventional problems as described in 1. by utilizing the human's thermal sensation in response to temperature changes. When the compressor is not turned off, the operating capacity is increased and the heating operation is stopped when the room temperature exceeds the above-mentioned certain range, thereby causing the room temperature to drop significantly below the set temperature. To prevent this, in the case of cooling operation, when the room temperature drops below a certain range around the set temperature, the operation capacity is increased without stopping the operation, and when the room temperature falls below a certain range above the set temperature, cooling operation is started. This prevents the room temperature from rising significantly above the set temperature to prevent residents from feeling cold or hot.

〔Example〕

This invention will be explained below with reference to Examples. FIG. 1 is an electrical configuration diagram showing an embodiment of the air conditioning system according to the present invention. In the figure, l is a power source, 2 is a temperature sensor for detecting room temperature made of a thermistor or something similar, 3 is an A/D converter, and 4 is a switch section. 5
is a microcomputer as a cooling/heating capacity calculation means having a cooling/heating capacity setting/changing means, and the input circuit 7
, CPU8, memory 9. It has an output circuit io.

The input circuit 9 is connected to a switch unit 4 for setting a set temperature, etc., and a temperature sensor for detecting room temperature is connected to an A/D
It is connected via the conversion device 3. The output from the output circuit 10 controls the capacity of the heating and cooling capacity generating device 6 .

Next, the operation of the above embodiment will be explained with reference to FIGS. 2 and 3 regarding heating operation. FIG. 2 is a flow chart diagram of the embodiment. First, when the power switch is turned on, the flowchart shown in FIG. 2 starts. Step F
1 sets the set temperature. In step F2, the room temperature detected by the temperature sensor is input, in step F3, the temperature difference T between the set temperature and the room temperature is calculated, and if the room temperature does not exceed the set temperature in step F4, the temperature difference △ is determined in step F5. Calculate heating capacity from T. According to the calculated heating capacity, the heating and cooling capacity generating device performs heating operation in step F6. If the room temperature exceeds the set temperature in step F4, it is determined in step F8 whether the heating operation has already stopped, and if it has stopped, the room temperature is detected as it is, and the room temperature is set to the set temperature. Wait for it to go lower. If heating operation is being performed, in step F9, the heating capacity is increased by a certain value, such as multiplying the capacity currently being operated by 1.2, as shown in this flowchart. increase. And step F
IO performs heating operation according to the calculated heating capacity. While detecting the room temperature in step F,
At step 12, wait until the room temperature becomes a certain temperature (α in the flowchart) higher than the set temperature. When the room temperature becomes a certain temperature higher than the set temperature, the heating operation is stopped in step F7.

Fig. 3 shows the control characteristics when the present example is also operated with suki heating, where (a) shows the change in heating capacity and (b)
is a diagram showing changes in room temperature. Heating operation is performed with the target temperature set, but if the temperature is increased above a certain range around the room temperature or the set temperature, the heating capacity is increased to, for example, 1.2 times the heating capacity currently in operation. When the room temperature reaches the set temperature 10α, 1113 operation is stopped. Then, when the room temperature becomes lower than a certain range centered on the set temperature, as shown in the figure, the hardware restriction time has already been exceeded and heating operation is resumed without being prohibited from starting operation.

As mentioned earlier, in the temperature range where people feel neither hot nor cold, their thermal sensitivity becomes dull. In particular, this tendency can be seen in response to heat during heating and to coolness during cooling. However, within the above range, people will not feel hot. Therefore, by controlling the heating capacity as described above,
Temperature control can be performed without making residents feel the change in environment, such as being hot or cold.

Although all of the above has been described with respect to heating operation, the same applies to cooling operation, and similar effects can be obtained in all air-conditioning devices that can vary the heating and cooling capacity.

[Effect of the invention] As described above, according to the present invention, when performing heating operation,
If the room temperature exceeds the set temperature, the system does not stop the heating operation at that point, but increases the operating capacity by a certain value, and then stops the heating operation when the room temperature exceeds the set temperature. By performing the same operation during cooling operation, when restarting operation, it is possible to reduce the difference between the room temperature and the set temperature without being subject to any hardware restrictions, and it is possible to reduce the difference between the room temperature and the set temperature. Combined with the tendency to feel cool, it is possible to always provide a comfortable environment to the occupants without making them feel the changes in the environment due to turning on and off the heating and cooling operation.

[Brief explanation of the drawing]

FIG. 1 is an electrical configuration diagram of an embodiment of the air conditioning system according to the present invention, FIG. 2 is a flowchart showing the operation of the embodiment of FIG. 1, and FIG. 3 shows its control characteristics ('a )
is a diagram showing temporal changes in heating capacity, (b) is a diagram showing temporal changes in room temperature, Fig. 4 is an electrical configuration diagram of a conventional air-conditioning device, and Fig. 5 is an operation of the conventional device shown in Fig. 4. The flowchart shown in FIG. 6 shows its control characteristics, and (a)
7 is a diagram showing temporal changes in heating capacity, (b) is a diagram showing temporal changes in room temperature, and FIG. 7 is a diagram showing the relationship between human thermal sensation and environmental temperature. In the figures, the same reference numerals indicate the same or corresponding parts. 2...Temperature sensor

Claims (1)

[Claims] The heating and cooling capacity generator includes a heating and cooling capacity generating device whose capacity can be varied, a temperature detector that detects room temperature, and a heating and cooling capacity calculation means that determines the heating and cooling capacity based on input from the temperature detector and set temperature and instructs the heating and cooling capacity generating device. In a heating and cooling device, when the heating and cooling capacity calculating means is performing heating operation, when the room temperature becomes higher than a certain range centered on the set temperature, the heating capacity is increased and the room temperature exceeds the set temperature by a certain temperature. If the room temperature is lower than a certain range around the set temperature, the heating operation is stopped, and if the room temperature is lower than a certain range around the set temperature, the cooling capacity is increased and the room temperature is lower than the set temperature by a certain temperature. 1. An air-conditioning/heating device that determines to stop cooling operation when