JP2520746B2 - Indoor environment control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an indoor environment control device based on the latest research results using a PMV index (thermal environment index).

[Conventional technology]

It is common nowadays to use an air conditioner to heat and cool the room, but as a standard for adjusting this air conditioner, the latest research result is a PMV index that indicates the comfort level of people in the room. It has been proposed to use (thermal environment index) as an index for regulation.

The PMV index is intended to represent the comfort level of a human with respect to the indoor environment, taking into consideration even the sweating of the human body, heat transfer through clothes, etc. (1) indoor temperature, (2) humidity,
As (3) air flow (air flow in the room), (4) radiation temperature (measured by a globe radiation thermometer) and relative amount,
It is calculated by a formula created by statistical processing from six data of (5) clothing amount, and (6) human metabolic amount (in other words, human generated heat amount).

The unit of the amount of clothes is expressed in Clo, and the approximate value is 1Clo for winter clothes and 0.5Clo for summer clothes. The unit of the amount of heat produced by the human body is expressed by met, and the sitting seat is 1 met (50 kc per 1 m ^{2 of} human body).
Equivalent to al / h. ), Housework, total work is 2met, walking fast will be about 4met.

Conventionally, a method of estimating the PMV index from a human body model containing a heating element has been used.

When the PMV index is +3, it means that the human body feels hot (that is, almost all people are very uncomfortable), and when -3, the human body feels cold (also very uncomfortable). ) Is shown. The closer the PMV index is to 0 (neutral), the higher the comfort level for the human body. Therefore, if the indoor condition is adjusted so that the PMV index is small (for example, within ± 0.5), it will be much more comfortable than conventional air conditioners. It is said that the conditions can be obtained.

Also, in an actual device, the amount of CO, CO ₂ , and dust in the room is measured, and the intake amount of outside air is controlled.

[Problems to be solved]

From the thermal equilibrium of the human body model containing the heating element as described above, PM
The method of calculating the V index has a problem in reproducibility of the human body of the model itself. It is technically difficult to reproduce heat exchange (effect of sweating) due to latent heat in a small model, and the shape of the model is often a cylinder or a very simplified shape similar to that.

Furthermore, in conventional room temperature control systems, the set values for indoor conditions are empirically determined, and in many cases effective control cannot be performed for humidity, so it is rational both in terms of indoor comfort and energy saving of the air conditioning system. It was difficult to set typical indoor conditions.

[Means for solving the problem]

In order to eliminate the above-mentioned disadvantages in the present invention, the lower end is opened, an air suction pipe, a temperature sensor, a humidity sensor, etc. are built in the inside, and an air sampling measuring cylinder equipped with a flow velocity sensor and a globe radiation temperature sensor on the side surface, It is attached to the ceiling plate that can be detached and moved by hanging it toward the room.On the back side of the ceiling plate, a measurement unit for CO, CO ₂ , and dust that communicates with the air suction pipe is attached. , An indoor environment control device which is designed to be sent to an air conditioner control unit via a data logger, a computer, or the like.

〔Example〕

FIG. 1 shows a partially broken view of an air sampling measuring tube 10 of the present invention. Reference numeral 1 denotes a hollow pipe measuring tube having an opening 11 at its lower end, which is attached to a ceiling plate 9 so that the opening 11 faces downward. Are hanging toward the room. The ceiling plate 9 is detachable and movable so that the position of the measuring cylinder 1 can be arbitrarily changed.

An air suction pipe 2, a humidity sensor 3, a temperature sensor 4, etc. are built in the measuring cylinder 1, and a wind speed sensor 5 for measuring the speed of the air flow in the room and a radiant temperature are measured on the side surface of the measuring cylinder. A glove radiation thermometer 6 is attached. The indoor air flows into the measuring cylinder as indicated by the arrow a. Reference numeral 7 is a measuring unit for measuring CO, CO ₂ , dust and the like in the room air collected by an air suction pipe, and 8 is a data logger, which is attached to the back side of the ceiling plate 9.

FIG. 2 shows a system of the indoor environment adjusting device of the present invention, in which each measured value from the measuring cylinder 1 and the measuring unit 7 is passed through the data logger 8 and is sent on the line 20 together with the data from the other measuring cylinder on the line 21. It is sent to the computer 22, processed there, and sent to the air conditioner controller 23. In addition, 24 represents an end display or a device such as an automatic recording printer.

[Work]

Since the measuring cylinder shown in FIG. 1 is a hanging type from the ceiling,
The data can be collected with almost no effect on the residents in the room. Regarding room temperature and glove temperature, it is common to measure at the center of the room,
The error due to the vertical distribution in the room is extremely small in practice even at the position where it hangs from the ceiling.

In the present invention, the calculation formula created by the statistical processing including the various human body conditions (internal heat generation, the amount of clothing, etc.) is entered by a computer program, and the data from the sampling measuring cylinder 10 is processed by a computer, Control the air conditioner. The amount of intake of outside air is determined from the amount of CO, CO ₂ and dust in the indoor and outside air.

[Effect]

The apparatus of the present invention is as described above, and a comfortable indoor environment adjusting apparatus based on the PMV index can be reliably obtained with a relatively simple apparatus.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of an air sampling measuring cylinder, and FIG. 2 is a system diagram of an indoor environment adjusting device. Explanation of symbols 1 ... Measuring tube, 2 ... Air suction tube, 3 ... Humidity sensor,
4 ... Temperature sensor, 5 ... Wind speed sensor, 6 ... Glove radiation thermometer, 7 ... CO, CO ₂ , dust measurement unit, 8 ... Data logger, 9 ... Ceiling board, 11 ... Opening, 20 , 21 …… Line, 22 …… Computer, 23 …… Control unit, 24 …… Display device.

Claims (1)

(57) [Claims] 1. In an indoor environment control device, one or a plurality of ceiling plates of a ceiling formed by a plurality of detachable and movable ceiling plates has an opening at a lower end, and a suction pipe is provided inside, A temperature sensor, humidity sensor, etc. are built-in, and a pipe-shaped measuring tube for air sampling with a wind speed sensor and a globe radiation thermometer is attached to the side of the ceiling plate. On the back side, there is a CO, CO ₂ , and dust measuring unit connected to the air suction pipe, and the measurement values from this measuring cylinder are processed via a data logger, computer, etc. to control and control the air conditioner. An indoor environment adjusting device, characterized in that it is configured to adjust an outside air intake amount.