JPH06331201A - Indoor environment setting device for air conditioner - Google Patents

Abstract

PURPOSE:To eliminate the necessity of an input by a controller, and always obtain an accurate amenity index by continuously detecting the condition of a resident by a method wherein the condition of a resident is detected by a human body information sensor, and the activity quantity is operated by an activity quantity operation means, and input in an amenity index operation means. CONSTITUTION:A human body information sensor 120 has a ray emitting part and ray receiving part for infrared rays, and outputs the received information. Also, a set temperature memory 3 which outputs 21 types of set temperature candidates (Tm) from 10 deg.C-30 deg.C by 1 deg.C as the unit is provided. An activity quantity operation means 121 continuously receives signals from the human body information sensor 120, and operates an activity quantity M of a resident. An amenity index operation means 7 operates a plurality of amenity indexes (Pmv), corresponding with the set temperature candidates (Tm) with a plurality of set temperature candidates (Tm) which are output values of the set temperature memory 3, a measure value H of an indoor humidity sensor 111, a measured value V of an indoor sensor 112, a measured value (Tr) of a radiation temperature sensor 113, the output value M of the activity quantity operation means 121, and an input value (1c) of a worn clothes quantity input means 115, using a specified equation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an air conditioner for cooling and heating office buildings and general houses,
The present invention relates to an indoor environment setting device for an air conditioner that gives an optimum indoor environment set value.

[0002]

2. Description of the Related Art In recent years, there has been an increasing need for comfort in air conditioning of office buildings and general houses, and the ability of an air conditioner to maintain the indoor environment represented by the indoor temperature at a set value. Similar to a high-performance control device that adjusts, an indoor environment set value calculation device for an air conditioner that automatically calculates an indoor environment set value that a occupant feels most comfortable is often used. On the other hand, energy consumption has become a big social problem in a wide range from general homes to offices, and energy saving is being called for. Under such a social situation, an energy saving measure for an air conditioner that requires a lot of energy is considered important, and an environment setting that considers energy saving as well as comfort is needed.

Under such a background, the present inventors have already calculated the comfort index and the air conditioner cost for a plurality of set temperatures in Japanese Patent Application No. 4-115682 and set them while displaying both of them. We have proposed an indoor environment setting device for an air conditioner that can achieve both optimal comfort and energy saving for residents by selecting the temperature.

A conventional indoor environment setting device for an air conditioner will be described below with reference to the drawings. FIG. 2 is a schematic diagram of an air handling unit which is a typical air conditioner and its control device. In FIG. 2, the air handling unit 101 includes a cold / hot water coil 102 and a cold / hot water coil 1
Blower 103 for sending the air whose heat is exchanged by 02 to the room
And has the function of blowing air into the room 105 through the air supply duct 104. Air handling unit 101 and indoor 10
5 are connected by a return air duct 106. Room 1
In 05, an indoor temperature sensor 107 for measuring the indoor temperature is installed.

The controller 108 controls the applied set temperature T
A signal from the indoor temperature sensor 107 is fetched based on set, and the frequency of an inverter 110 that changes the opening of a valve 109 that changes the amount of hot water or cold water that flows in the hot / cold water coil 102 and the amount of air blown by the blower 103 is changed The amount Q of heat supplied to 105 is adjusted to maintain the room temperature at a desired constant value.

FIG. 3 is a block diagram of a conventional indoor environment setting device for an air conditioner. In FIG. 3, in the room 105, in addition to the room temperature sensor 107 that measures the room temperature, the room humidity sensor 111 that measures the room humidity, the room wind speed sensor 112 that measures the room wind speed, and the room radiant temperature are measured. A radiation temperature sensor 113, an activity amount input means 114 for inputting the activity amount of the occupant, and a clothing amount input means 115 for inputting the clothing amount of the resident are installed. An outdoor air temperature sensor 4, an outdoor air humidity sensor 5, and a solar radiation sensor 6 are installed outdoors. Further, a set temperature memory 3 for outputting 21 kinds of set temperature candidates Tm from 10 ° C. to 30 ° C. in steps of 1 ° C. is installed.

It is possible to set the room temperature with higher accuracy by reducing the intervals of the set temperature candidates, and it is possible to cope with a wider environment by increasing the upper and lower limit values of the set temperature candidates.

The comfort index calculating means 7 measures a plurality of set temperature candidates Tm which are output values of the set temperature memory 3, a measured value H of the indoor humidity sensor 111, a measured value V of the indoor wind speed sensor 112, and a radiation temperature sensor 113. The value Tr, the input value M of the activity amount input means 114, and the input value l of the clothing amount input means 115.
A plurality of comfort indexes pmv corresponding to the respective set temperature candidates Tm are calculated from c using the following equation.

[0009]

[Equation 1]

The PMV index is a thermal environment evaluation index defined in the international standard ISO7730, and the indoor temperature, indoor humidity, indoor wind speed, radiant temperature, occupant's activity amount, and occupant's clothing amount are input as described above. And its value is 0
The number of occupants who feel comfortable at the time is the highest, and the positive number increases the number of occupants who feel hot, and the negative number decreases the number of occupants who feel cold. Yes, it is generally said that 90% of people feel comfortable when the value of PMV is in the range of −0.5 to 0.5.

The air-conditioning load calculating means 8 sets each of a plurality of output values Tm of the set temperature memory 3, a measured value To of the outside air temperature sensor 4, a measured value Ho of the outside air humidity sensor 5, and a measured value S of the solar radiation sensor 6. A plurality of air conditioning load predicted values QL corresponding to the temperature candidates are calculated. Calculation of the air-conditioning load prediction value is performed by, for example, Ohmsha (edited by the Air Conditioning and Sanitary Engineering Society of Japan).
It will be performed based on the method described in Chapter 3 Air Conditioning Load of "Practice and Knowledge of Air Conditioning Equipment" issued.

The cost calculation means 9 calculates a cost prediction value EL corresponding to each air conditioning load prediction value QL. Explaining how to calculate the cost prediction value EL, (Table 1)
The running cost EL corresponding to each air conditioning load predicted value QL is obtained by linear interpolation with reference to the "air conditioning load-running cost table".

[0013]

[Table 1]

The values in the table shown in (Table 1) are set by the administrator. The plurality of comfort indexes pmv and the plurality of cost prediction values EL thus calculated are displayed on the display means 10 together with the set temperature candidates corresponding to them. An example of this display is shown in FIG. In FIG. 4, among the 21 types of setting temperature candidates Tm output from the setting temperature memory, the setting temperature determined to be optimum by the PMV comfort index and 2 degrees before and after that, a total of 5 types of setting temperature candidates, respectively, are saved. This is an example of displaying energy effect and comfort. This example is for the case of cooling, and shows that the indoor set temperature at which the occupant feels most comfortable is 20.0 ° C. If the set temperature is further raised by 2 ° C, comfort will drop from 95% to 45%, but the energy saving effect will be 1
It shows that it saves 40,000 yen per day. While referring to these, the administrator determines whether to take comfort or energy saving, and selects the set temperature Tset by the set temperature selection means 11. The selected set temperature Tset is provided to the control device 108. The series of operations is performed before operating the air conditioner (generally every morning).

As described above, in the conventional embodiment, not only the comfort index is focused on to determine the set temperature, but also the cost prediction value which is directly related to the amount of energy used is focused on to achieve both comfort and energy saving. The set temperature can be set.

[0016]

However, in such a conventional indoor environment setting device for an air conditioner, the air conditioning manager or the like determines the amount of activity required to calculate the comfort index by the state of the occupants of each room. Had to type directly to see. Also, since the amount of activity changes depending on the working conditions of the resident,
There is a problem that an accurate comfort index cannot be obtained unless the administrator judges and inputs it each time, and the burden on the administrator increases.

[0017]

In order to solve the above problems, an indoor environment setting device for an air conditioner according to the present invention detects a plurality of indoor sensors for measuring the indoor environment and the status of the occupants in the room. A human body information sensor, an activity amount computing means for computing the activity amount of a resident from the human body information sensor, an in-person number computing means for computing the number of people in the room from the human body information sensor, and a plurality of settings A set temperature memory for holding temperature candidates, a measured value of the plurality of indoor sensors, an activity amount calculated by the activity amount calculating means, and a plurality of set temperature candidates retrieved from the set temperature memory Comfort index calculation means for calculating a plurality of comfort indexes corresponding to a plurality of set temperature candidates, a plurality of outside air sensors for measuring the outside air environment, measured values of the plurality of outside air sensors and the number of people in the room An air conditioning load calculation means for calculating a plurality of air conditioning loads corresponding to the plurality of set temperature candidates by taking in the number of persons in the room calculated by the calculation means and a plurality of set temperature candidates extracted from the set temperature memory, Cost calculating means for calculating a plurality of air conditioner operating costs corresponding to each of a plurality of calculated values of the air conditioning load calculating means,
A plurality of set temperature candidates extracted from the set temperature memory, and a display unit for displaying a plurality of calculated values of the comfort index calculation unit and a plurality of calculated values of the cost calculation unit corresponding to the respective set temperature candidates. A set temperature selection means for selecting a set temperature in the room based on the display of the display device is provided.

[0018]

According to the present invention, in order to detect the state of the occupant by the human body information sensor and calculate the activity amount by the activity amount calculating means based on the detected value and input the result to the comfort index calculating means, Eliminates the need for administrators to enter as before. Furthermore, since the state of the occupant can be constantly detected, an accurate comfort index can always be obtained.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. However, the same parts as those of the conventional example are denoted by the same reference numerals and the description thereof will be omitted. FIG. 1 shows an indoor environment setting device for an air conditioner that is an embodiment of the present invention. In FIG. 1, in the room 105, in addition to the room temperature sensor 107 that measures the room temperature, the room humidity sensor 111 that measures the room humidity, and the room wind speed sensor 1 that measures the room wind speed.
12, radiation temperature sensor 11 for measuring the radiation temperature in the room
3. A clothing amount input means 115 for inputting the clothing amount of the resident is installed. An outdoor air temperature sensor 4, an outdoor air humidity sensor 5, and a solar radiation sensor 6 are installed outdoors. Further, a human body information sensor 120, an activity amount calculation means 121, and an in-room number of people calculation means 122 are installed. As the human body information sensor 120, generally used is a sensor having an infrared light emitting portion and a light receiving portion, which repeatedly emits and receives light throughout the room and outputs the received information. Further, a set temperature memory 3 for outputting 21 kinds of set temperature candidates Tm from 10 ° C. to 30 ° C. in steps of 1 ° C. is installed. Activity amount calculation means 121
Receives the signal from the human body information sensor 120 continuously and calculates the activity amount M of the resident. The comfort index calculation means 7 uses a plurality of preset temperature candidates T which are output values of the preset temperature memory 3.
m, the measured value H of the indoor humidity sensor 111, the measured value V of the indoor wind speed sensor 112, the measured value T of the radiation temperature sensor 113
r, a plurality of comfort indexes pmv corresponding to the respective set temperature candidates Tm are calculated from the output value M of the activity amount calculation means 121 and the input value lc of the clothing amount input means 115 by using the equation (1).

The air-conditioning load calculation means 8 has a plurality of output values Tm of the set temperature memory 3, a measured value To of the outside air temperature sensor 4, a measured value Ho of the outside air humidity sensor 5, a measured value S of the solar radiation sensor 6, and the number of people in the room. From the output value K of the calculation means 122, a plurality of air conditioning load predicted values QL corresponding to the respective set temperature candidates are calculated. The method of calculating the air conditioning load predicted value is the same as that of the conventional example.

The cost calculation means 9 calculates a cost prediction value EL corresponding to each air conditioning load prediction value QL. The method of calculating the cost estimated value EL is the same as in the conventional example. The plurality of comfort indexes pmv and the plurality of cost prediction values EL thus calculated are displayed on the display means 10 together with the set temperature candidates corresponding to them. The administrator inputs the set temperature Tset using the set temperature selection means 11 with reference to the display means 10. The set temperature Tset is determined by the control device 108.
Given to.

As described above, according to the present invention, the human body information sensor 120 is installed in the room to constantly detect the state of the resident, and the activity amount calculating means 121 and the occupant number calculating means 122 are used to detect the activity amount of the resident. And you can always keep track of the number of people. Therefore, the burden on the administrator can be greatly reduced as compared with the conventional example.

In the present embodiment, the case where the set temperature is obtained as the environment set value has been taken as an example, but the same applies when other environment set values such as the set humidity are obtained instead of the set temperature. Further, although these examples are premised on the case of one room of a general house, the same effect is obtained even when the target is one office or one floor of a larger building.

[0024]

As described above, according to the present invention, the state of the occupant is detected by the human body information sensor, and the activity amount calculating means calculates the activity amount based on the detected value and inputs it to the comfort index calculating means. In addition, there is no need for the administrator to input as before. Furthermore, since the state of the occupant can be constantly detected, an accurate comfort index can always be obtained. Further, the number of people in the room is calculated from the human body information sensor, and the air-conditioning load calculation including this is performed, so that the accuracy of the load calculation can be improved. This is because the number of people in the room greatly affects the air conditioning load.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an indoor environment setting device for an air conditioner according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of an air handling unit and its control device.

FIG. 3 is a configuration diagram of a conventional indoor environment setting device for an air conditioner.

FIG. 4 is a configuration diagram showing a display portion of an indoor environment setting device for an air conditioner according to an embodiment of the present invention.

[Explanation of symbols]

 3 set temperature memory 4 outdoor temperature sensor 5 outdoor air humidity sensor 6 solar radiation sensor 7 comfort index calculation means 8 air conditioning load calculation means 9 cost calculation means 10 display means 11 set temperature selection means 101 air conditioner 107 indoor temperature sensor 111 indoor humidity sensor 112 Indoor wind speed sensor 113 Radiation temperature sensor 120 Human body information sensor 121 Activity amount calculation means 122 Number of people in room calculation means

Claims (1)

[Claims] 1. A plurality of indoor sensors for measuring an indoor environment, and a human body information sensor for detecting a situation of an occupant in the room.
An activity amount calculating means for calculating the activity amount of the resident from the human body information sensor, an in-person number calculating means for calculating the number of people in the room from the human body information sensor, and holding a plurality of preset temperature candidates. A set temperature memory to be set, measurement values of the plurality of indoor sensors, an activity amount calculated by the activity amount calculating means, and a plurality of set temperature candidates retrieved from the set temperature memory. Comfort index calculation means for calculating a plurality of comfort indexes corresponding to each, a plurality of outside air sensors for measuring the outside air environment, measurement values of the plurality of outside air sensors and the number of people in the room calculation means Air-conditioning load calculation means for calculating a plurality of air-conditioning loads corresponding to a plurality of set temperature candidates by taking in the number of persons in the room and a plurality of set temperature candidates extracted from the set temperature memory. Corresponding to a cost calculating means for calculating a plurality of air conditioner operating costs corresponding to each of a plurality of calculated values of the air conditioning load calculating means, a plurality of set temperature candidates retrieved from the set temperature memory, and respective set temperature candidates Display means for displaying a plurality of calculated values of the comfort index calculation means and a plurality of calculated values of the cost calculation means, and set temperature selection means for selecting a set temperature in the room based on the display of the display device. An indoor environment setting device for an air conditioner.