JPH0783479A - Air conditioner - Google Patents

Abstract

PURPOSE:To enable attainment of a temperature environment being comfortable to a dweller by controlling a room temperature so as to realize a set value of the room temperature corresponding to the current state. CONSTITUTION:A first function 6 determines a set value 5 of a room temperature corresponding to a current state on the basis of a radiation temperature 12 detected by a radiation temperature detector 11 provided in a room 1, an air velocity corresponding to the quantity 4 of air and an estimated average temperature feeling 13 corresponding to the contents of operation given from a second function 7. The second function 7 gives the first function 6 the contents 21 of operation determined on the basis of a room temperature 8 detected by a room temperature detector 9 provided in the room 1, an outdoor air temperature 16 detected by an outdoor air temperature detector 15 provided outside the room 1 and a switch output 20 of an operating unit 19 having a switch 17 which is operated when the room temperature is desired to be set for somewhat larger warmth and a switch 18 which is operated when the room temperature is desired to be set for somewhat larger coolness. According to this constitution, a comfortable temperature environment which a dweller likes can be attained automatically.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner capable of automatically determining a set value of room temperature and automatically correcting it according to the preference of a resident.

[0002]

2. Description of the Related Art As one of the known examples in the past, Japanese Patent Laid-Open No.
-101341 is available. The air conditioner of this known example is
Metabolic rate (work volume), clothing amount, predicted average warmth (hereinafter P
It has a function of setting the indoor temperature obtained by substituting the set value of (MV) and the detected values of the air velocity, the relative humidity and the radiation temperature into the PMV equation as the target value of the indoor temperature. With this function, PMV set based on the annual schedule etc.
It is expected to automatically control the room temperature to realize However, since the procedure for determining the room temperature is fixed, it is not possible to adjust the preference of the resident, that is, whether it is warm or cool, and it is comfortable to reflect the equipment status and operating conditions to the resident. It has the drawback that it cannot achieve room temperature.

As another known example, there is JP-A-63-14028. The air conditioner of this publicly known example includes respective sensory switches that are operated when it feels hot and cold, and means for changing the set temperature when these sensory switches are operated, and And a means for determining the change width of the set temperature based on the input signal from the operated sense switch and the input signal from the temperature detector at that time. By this means, it becomes possible to adjust the resident's preference, that is, whether it is desired to keep warm or cool. However, since there is no means to reasonably determine the set temperature that serves as the standard,
Residents must repeatedly operate the switches. In addition, since there is no means for storing and reproducing the result of the operation, the resident has the drawback that the same operation must be repeated.

[0004]

However, all of the above-mentioned conventional techniques have a problem that a comfortable temperature environment preferred by residents cannot be easily realized.

An object of the present invention is to provide a comfortable temperature environment preferred by a occupant with a function as simple as possible so as to accurately realize the function with a minimum of operations.

[0006]

In order to achieve the above object, the air conditioner of the present invention detects a room temperature detector for detecting an indoor temperature, a radiation temperature detector for detecting a radiation temperature, and an outside air temperature. It is equipped with an outside air temperature detector, a means to identify the wind speed based on the air volume control value, a switch to operate when warming to room temperature, and a switch to operate when cooling to room temperature. , The first function to determine the set value of the room temperature based on the amount of clothes, the work amount and the PMV given from the second function, and the PMV is determined based on the room temperature, the outside air temperature and the switch operation status of the occupant, It has a second function of storing and reproducing this and giving it to the first function.

[0007]

In the first function, the PMV corresponding to the operation contents of the switch is realized based on the PMV determined by the radiation temperature, the wind speed, the humidity, the clothing amount, the work amount and the operation contents of the switch given from the second function. The set value of the room temperature for the calculation is obtained by referring to the table which is calculated and stored in advance. Then, by controlling the room temperature at which the air conditioner is operated so as to achieve this set value, it is possible to automatically achieve a comfortable temperature environment for the occupants.

A second function associated with this is that the PM based on the room temperature, the outside air temperature, and the operating condition of the switch of the occupant.
V is determined, and this is stored and reproduced in relation to room temperature and outside air temperature and given to the first function. As a result, it is possible to immediately realize a temperature environment according to the preference of the occupant at that time. Furthermore, the relationship between the room temperature and the outside air temperature and the operation status of the switch is stored in a table, and it is constantly monitored whether or not it is in the same state thereafter. P, which is determined by the operation contents of the switch regardless of the presence or absence
Give MV to the first function. As a result, the occupant can automatically achieve a comfortable temperature environment without repeating the same operation.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the structure of the air conditioner of the present invention.

Reference numeral 1 is a room in which a resident is present. There are two outputs of the refrigeration cycle 2, namely, the temperature 3 of the blown air and the air volume 4 of the blown air, which controls the temperature environment of the room 1. Of these, the setting value 5 for room temperature control is
It is automatically determined by the first function 6 and the second function 7 described below. The refrigeration cycle 2 is operated based on the difference 10 between the room temperature set value 5 and the room temperature 8 detected by the room temperature detector 9 installed in the room 1.

The first function 6 corresponds to the radiation temperature 12 detected by the radiation temperature detector 11 installed in the room 1, the wind speed corresponding to the air volume 4, and the operation content given from the second function 7. Predicted average temperature (PMV; Predictive Mcan Vo)
te) 13, the room temperature setting value 5 corresponding to the current state is determined by referring to the table 14 for determining the room temperature setting value 5 which is calculated in advance and stored.

Next, the second function 7 is the room temperature 8 detected by the room temperature detector 9 installed in the room 1 and the outside air temperature detected by the outside air temperature detector 15 installed outside the room 1. 16
And a switch output 20 of an operating device 19 having a switch 17 operated when the occupant wants to make the room temperature warm and a switch output 20 having a switch 18 operated to make the room temperature cool and the operation determined by the operation content 21. The content 21 is given to the first function.

The room temperature set value 14 in the first function is
PM is calculated and stored in advance by the following procedure.
The original formula for calculating V is given by ISO7730 (1987) as follows.

[0015]

[Equation 1]

Equation 1 calculates PMV using six input variables and is said to be an index of average comfort level at that time. However, in order to control the operation of the refrigeration cycle 2, the set value of room temperature 5 is required. Therefore, as shown in FIG. 2A, PMV is selected as one of the input variables, and the equation 1 is converted so that room temperature is obtained as the output variable. By using this, if the designated PMV is used, the room temperature corresponding to this can be obtained.
For example, since PMV = 0 in a comfortable state,
The room temperature required at this time is the room temperature to achieve a comfortable state (the current room temperature may be different)
Can be set to C. However, since it is impossible to transform the equation 1 in this way because the equation 1 is non-linear, it is appropriate to transform it by a linear approximation formula as shown in FIG. Even in this case, the room temperature can be obtained with sufficient accuracy for practical use. further,
Since it is disadvantageous in terms of program capacity and speed to incorporate this linear approximation formula into an actual control device, a method of calculating it in advance and converting it into a numerical table as shown in FIG. It's simple. The output variable (set value of room temperature) can be easily obtained by referring to the numerical table regarding the input variable. At this time, by using the interpolation calculation,
It is possible to balance the program capacity and the calculation accuracy.

In FIG. 2, six input variables are used to determine the room temperature. In order to obtain all of these input variables, as shown in FIG. 3A, in addition to the radiation temperature detector 11 shown in FIG. 1, detectors such as the wind speed detector 22 and the humidity detector 23, and the amount of clothing. Setting device 24, activity amount setting device 25,
A setter such as the PMV setter 26 is required. But,
It is inconvenient and inconvenient to handle a large number of detectors and setting devices in this way, and it is not preferable in terms of cost. Therefore, it is limited to the minimum necessary for practical use.

FIG. 3 (b) is an example thereof, and in addition to the radiation temperature detector 11, the outside air temperature detector 15, and the room temperature detector 9 shown in FIG. 1, no detector or setting device is used. There is. The wind speed 4 is the air volume controller 2 associated with the refrigeration cycle 2.
The wind speed is determined by referring to the model based on the operation of 7.
Table 1 is an example of this.

[0019]

[Table 1]

[0020]

[Table 2]

As the humidity, the amount of clothes, and the amount of activity, standard values set in advance are discriminated and used based on the detected values of the outside air temperature and room temperature. In addition, it is also possible to refer to the operation status of cooling and heating in the refrigeration cycle. Table 2 is an example of this. Set standard values as shown in the table according to rough categories such as cooling period, heating period, or intermediate period. Using this, a separate table for the cooling period, heating period, or intermediate period is created separately, and this is selected and used. With this method, some errors are unavoidable, but a simple configuration can be achieved.

Regarding the PMV, the switches 17 and 18 of the operating device 19 which are processed in the second function 7 which will be described later.
The PMV is discriminated according to the operation status 20. This table 1
By arranging the contents of the above, it is possible to create a simple table 14 such as shown in the room temperature set value 14 in FIG. 1 from which three input variables can be obtained and the room temperature set value can be obtained.

The operation of the air conditioner of the present invention will be described with reference to the flowchart of FIG. After the refrigerating cycle completes the starting operation, the first function 6 and the second function 7 are operated in a constant cycle. First, it is determined whether the room temperature 8 is within a predetermined range ε with respect to the set value 5. When this is not within the predetermined range, it is a transient state of temperature control, so
The room temperature setting value 5 is not changed. If it is within the predetermined range, it is determined whether or not the waiting timer is completed. As a result, it is possible to prevent the control from becoming unstable by changing the set value again within a predetermined time after changing the set value. After this, the occupant switches the switches 17 and 18 of the operating device 19.
Determine whether you have operated.

When an operation is performed, the switch output 20 is stored in the operation content 21 in correspondence with the room temperature (approximately set value) 8 and the outside air temperature 16 at that time. Further, the set value 5 of the room temperature is obtained by referring to the operation content 21 by using the PMV 13 corresponding to the operation content 21, the radiation temperature 12 and the wind speed 4 at that time. As a result, the room temperature set value 5 can be changed according to the preference of the occupant who operated the switch to control the room temperature to be warm or cool. At this time, the aforementioned waiting timer is reset. On the other hand, when there is no operation by the resident, the room temperature (approximately set value) 8 and the outside temperature 16 at that time are made to correspond to
Refer to the work content 21. Then, switch operation 20
Is stored, the PMV corresponding to this is given to the room temperature set value 14. This will allow residents to
Even if the switch is not operated, the set value of the room temperature can be automatically changed according to the preference of the resident so far, and the room temperature can be controlled to be warm or cool.

FIG. 5 shows the work content 21 in detail. Corresponding to the combination of the room temperature 8 and the outside air temperature 16, the operation contents of the switches 17 and 18 of the operation device 19 are stored and referred to. For example, when the warming switch 17 is input, +1 is written in the item 21 of the operation content of the row of the room temperature 8 and the outside air temperature 16 at that time. Also, cool switch 18
When is input, room temperature 8 and outside air temperature 16 at that time
-1 is written in the item of the operation content 21 of the line. The number of PMVs to be made to correspond to the set value and how to substantially correspond to the set value are appropriately set through simulations and experiments, but can be changed and corrected relatively easily.

When the switch 17 or 18 is operated redundantly, +2 or -2 or the like is written or reset to 0. In this way, the preferences of the occupants are accumulated in this table in relation to room temperature and ambient temperature.

On the other hand, when the operation content 21 of the row in which the combination of the room temperature 8 and the outside air temperature 18 matches is referred to and the operation content +1 or -1 is written, this is output. At this time, the term 3 of the reference number of the same reference number
Written to 2. Then, the operation content that is not referred to even after the lapse of a predetermined time is canceled. If you do this,
It can be adapted to changes in resident preferences and environmental changes over a long period of time.

FIG. 7 is a time chart for explaining the operation of the air conditioner of the present invention. FIG. 7A shows the situation of the previous day, and it is assumed that the resident operates the switches 17 and 18. The set value 5 is changed as indicated by the alternate long and short dash line according to the preference of the resident, and the refrigeration cycle 2 is operated in accordance with this, and the room temperature is controlled so as to be realized. In addition,
Outside temperature is not shown. At the time A when the room temperature rises after the refrigeration cycle is activated, the occupant operates the switch 17 for warming up, and the first function raises the set value by a predetermined amount. Further, at time B, the switch 17 for warming up again is operated, and the set value is raised again by the first function. However, at the time C, the switch 18 for cooling is operated, so the set temperature is lowered by the first function.
The room temperature is controlled so as to sequentially follow the change in the set temperature, and a desired temperature environment corresponding to the switch operation of the occupant is realized. At the same time, the second function
The room temperature at this time and the operation content of the switch are associated with each other and stored in the work content 21. Of course, when the switch is not operated, the room temperature is automatically controlled to the comfortable room temperature by only the first function.

Next, FIG. 7B shows the situation on the next day, and it is assumed that the resident does not operate the switches 17 and 18 at all. The set temperature 5 is automatically changed as indicated by the alternate long and short dash line based on the result of the previous day, and the refrigerating cycle 2 is operated accordingly, and the room temperature is controlled as indicated by the solid line. The outside air temperature is not shown. After the start-up is completed, the room temperature rises at the point A ′ in FIG.
Since it corresponds to the time point, the set value is automatically increased by referring to the result stored on the previous day by the second function. Similarly, since the time B'corresponds to the time B in FIG. 7A, the set value is automatically increased again by referring to the result stored on the previous day by the second function. Then, since the time point C'corresponds to the time point C in FIG. 7A, the set value decreases. In this way, even when there is no resident operation, it automatically determines the time when it should be operated,
The setting value is automatically changed so that the operation content is prefetched. Therefore, the occupant can realize a desired temperature environment without performing a troublesome operation.

It is also possible to select whether to use the first function or the second function by external setting. Also,
In order to support the use by many residents individually, it is possible to select the resident by external setting, or set the room temperature or the contents of the operation contents to correspond to the resident. It is also possible to store the data in an external memory.

The operation device 19 includes a switch 17 operated when warming and a switch 1 operated when cooled.
Although 8 is provided, it is also possible to divide this into a plurality of stages to form a plurality of switches.

As a comfort index, the standard configuration using the PMV specified by ISO has been described. At the stage of creating the room temperature set value of the first function, for example, Japan Considering that people like warming and reflecting the effect of humidity to a large extent, P
This can be easily modified appropriately in accordance with MV.

[0033]

EFFECTS OF THE INVENTION According to the present invention, normally, even if the occupant does not perform the operation related to the room temperature setting, the room temperature is considered to be comfortable in each season based on the radiation temperature and the wind speed measured at each time. Automatically controlled. Further, if the resident wants to make the temperature environment warm and finely adjust the temperature environment, he or she may operate the corresponding switch. At this time, since the operation content is stored in correspondence with the room temperature or the outside air temperature, if the same environmental condition as that after that is stored, the operation content is automatically reproduced. Therefore, the occupant can obtain a desired temperature environment without repeating the same operation many times.

[Brief description of drawings]

FIG. 1 is a block diagram showing the overall configuration.

FIG. 2 is an explanatory diagram showing the contents of a first function.

FIG. 3 is an explanatory diagram showing the contents of a first function.

FIG. 4 is a flowchart showing functions.

FIG. 5 is an explanatory diagram showing the contents of a second function.

FIG. 6 is a time chart for explaining the operation.

[Explanation of symbols]

1 ... Room, 2 ... Refrigeration cycle, 3 ... Blow-off air, 4 ... Wind speed, 5 ... Set value of room temperature, 6 ... First function, 8 ... Detected value of room temperature, 9 ... Room temperature detector, 10 ... Difference, 11 ... radiation temperature detector, 12 ... radiation temperature detection value, 13 ... switch operation content, 14 ... room temperature setting value, 15 ... outside air temperature detector, 16
... Detected value of outside air temperature, 17 ... Switch to operate when warming, 18 ... Switch to operate when cooling,
19 ... Operation device, 20 ... Operation contents of operation device, 21 ... Operation contents.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shunji Sasaki 390 Muramatsu, Shimizu City Shizuoka Prefecture, Hitachi Shimizu Plant (72) Inventor Masamichi Mochizuki 390 Muramatsu Shimizu City Shizuoka Prefecture, Hitachi Ltd. Shimizu Plant, Hitachi Ltd.

Claims (1)

[Claims] 1. A room temperature detector for detecting an indoor temperature, a radiant temperature detector for detecting a radiant temperature, an outside air temperature detector for detecting an outside air temperature, and a means for specifying a wind speed based on an air volume control value. It is equipped with a switch that operates when you want to make it warm and room temperature, and a switch that you operate when you want to make room temperature cool, and the operation status of the switch given from radiation temperature, wind speed, humidity, clothing amount, work amount, and second function. The first function to determine the set value of the room temperature based on the predicted average temperature corresponding to, and the predicted average temperature is determined and stored based on the room temperature, the outside air temperature, and the switch operation status of the resident.
An air conditioner having a second function of reproducing and giving a first function.