JP2595147B2 - Air conditioning equipment for multiple areas and its operation method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner suitable for a facility in which a mechanical electric room is present in a plurality of areas such as a nuclear power plant.

[0002]

2. Description of the Related Art An air conditioner is used as a control device, in which a timer is used to start and stop the air conditioner to control the temperature. Japanese Patent Application Laid-Open Nos. 55-116041 and 55-12.
It is known in the publication of 1340.

[0003]

SUMMARY OF THE INVENTION Many mechanical and electrical rooms, such as nuclear power plants, and long walkways along the mechanical and electrical rooms.
There are the following problems in the ventilation and air-conditioning equipment of building equipment having (corridor).

(1) For example, the environmental temperature required when operating indoor equipment in a mechanical electric room or the like of a nuclear power plant is 10 to 40 ° C.
However, this temperature condition is severe as a working environment for the operator. 18-20 for human work environment
° C is required.

However, in a nuclear power plant or the like, the frequency of simultaneous entry of a large number of rooms (approximately 500 rooms) is as low as 5 to 10% in a mechanical power room.
Moreover, the stay time is considered to be about one hour or less.

[0006] Therefore, in such equipment, it is wasteful of energy for cooling and heating to keep the temperature condition inside the building at a value suitable for human operation at all times.

Further, in a mechanical electric room or the like, even if cooling and heating are started upon entering the room, the room temperature does not drop immediately, so that the temperature does not reach a temperature suitable for work within a short inspection work time of 30 minutes or less to about 1 hour or less. I have to finish the inspection.

In order to solve this problem, it is necessary for the regular inspection patrol or the like to perform an enhanced operation of the cooling and heating capacity in advance in accordance with the time schedule incorporated in the daily plan and before entering the area or the room.

(2) Inspection work of a nuclear power plant or the like is not always performed in accordance with a planned schedule, and may be arbitrarily entered as an unsteady work.

[0010] In order to cope with these areas, it is necessary to provide a mechanism for detecting a person's area and enhancing the cooling and heating capacity.

In a nuclear power plant or the like, there is a possibility that an operator may handle an article which may be radioactively contaminated. There is a possibility of contamination, etc., which is not preferable, and automatic detection and automatic operation are required.

An object of the present invention is to eliminate the waste of energy required for the air conditioning temperature control while enabling the air conditioning temperature control according to a planned schedule and the air conditioning temperature control outside a plan.

[0013]

A first means for achieving the above object is a plurality of air conditioners provided in a plurality of areas, respectively, and each air conditioner is provided with the air conditioner for each of the areas. Air conditioning equipment equipped with a temperature control device that switches the air conditioning temperature by a machine in response to an operation switching signal in a plurality of stages including the environmental temperature of a person and other environmental temperatures, the operation switching signal according to a preset time schedule. Control means for giving to each of the temperature control devices, each detector provided corresponding to each of the regions, for detecting the entrance and exit of a person for each of the regions, and an entrance detection signal from the detector. Giving the operation switching signal to the person's environmental temperature to the temperature control device of the air conditioner corresponding to the detector based on the detector, and the operation switching signal to the other environmental temperature based on the departure detection signal. Give The second means is a plurality of air conditioners provided in each of a plurality of areas, and each air conditioner is air-conditioned by the air conditioner in each of the areas. In an air conditioner equipped with a temperature control device that switches a harmony temperature to a plurality of stages including an environment temperature of a person and another environment temperature by receiving an operation switching signal, sequentially based on a preset time schedule.
The operation of the air-conditioning temperature of the air conditioner in each area is performed.
By providing a switching signal to the temperature control device for switching
In addition, the person can be assigned to any one of the work target areas in the respective areas.
Before the air conditioner in the entry area corresponding to the entry area
The operation control signal to the environmental temperature of the person is sent to the temperature control device.
Given, based on the person leaving the work destination area
The temperature control device according to the air conditioner in the departure region
The operation switching signal to the other environmental temperature
Of Air Conditioning Equipment for Multiple Areas with Various Features
It is.

[0014]

According to the first means, an operation switching signal is given to each temperature control device according to a preset time schedule to sequentially switch the temperature of the area where a person enters into the environment temperature of a person for each area. If a person enters the area outside of the time set in a certain area, the detector detects it and the operation switching signal is given to the temperature control device of the air conditioner in that area, and the environment of the person is changed. If the detector detects that the person has departed from the temperature, an operation switching signal is given to the temperature control device to return the temperature to the original environmental temperature.

[0015]

[0016]

According to the second means , an operation equivalent to the operation of the first means can be obtained.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described first as outlined below.

(1) As described in the previous section, in a nuclear power plant or the like, there are about 500 mechanical and electrical rooms, of which 5 to 5 are simultaneously entered for inspection patrols.
Very low, about 10%.

An air conditioner operation simulator simulating a daily regular inspection patrol time schedule is provided as a means for enhancing the cooling / heating capacity of the room to be entered in advance so that the temperature condition suitable for entering the room is obtained. By incorporating it into the machine control panel, the cooling and heating enhancement operation is performed prior to the entry time of the target room, and the operation of the air conditioner is restored to the original state during the expected exit time.

(2) As a means for arbitrarily entering a room as an irregular work other than the above-mentioned planned schedule, a detector (for example, a detector for detecting a passing direction of a person in each room and each passage in which an air conditioner is installed) is used. Infrared detectors are installed at a distance of about 1 m or less), and two points are installed at each point to detect the entrance and exit of the room, detect the outward and return paths to the passage, and automatically detect the air conditioner. The operation is switched (for the room, the air-conditioning capacity is strengthened when entering the room, restored when leaving the room, the passage, the forward-side air conditioning function strengthening operation when going forward, and the return-side room adjustment function strengthening operation when returning home).

Hereinafter, embodiments of the present invention will be described more specifically. FIG. 1 shows a system diagram according to one embodiment of the present invention. In FIG. 1, fresh air is taken in by an air conditioner 1, heated or cooled by a heater 2 or a cooler 3 built in the air conditioner, and then an air conditioner or the like in each area of the building through ducts 25 and 26 by a fan 4. Sent to

The exhaust air from each area in the building is exhausted to the outside of each area by exhaust equipment including an exhaust port or an exhaust fan.

The intake outside air is controlled and adjusted by a temperature control system of the heater 2 or the cooler 3 to a predetermined temperature determined by design.

The cooling control by the cooler 4 will be exemplified below.

The cooling water cooled to a predetermined temperature by the refrigerator 6 is given a control signal of the temperature controller 7 or 8 to the control valve via the pipe 27 by the pump 5 and adjusted to a value that meets the required conditions. Which of the temperature controllers 7 and 8 is controlled is normally controlled by the temperature controller 8, and when the water temperature exceeds the specified value when the refrigerator 6 enters, the priority selector 9 automatically controls the temperature controller 7. Move to

The air blown by the fan 4 is supplied to the duct 2
Air conditioners 11, 19, 21 and 23 via 5 and 26
Supplied to

FIG. 1 shows two rows for the room and two rows for the passage.

Each of the air conditioners 11, 19, 21 and 23 has a built-in cooler 12, a heater 13 and the like.

The method of controlling the room temperature by the air conditioner 11 will be described. When no room for human entry is required, the opening degree of the control valves 16 and 17 is controlled by the temperature controller 14 of the control device 11a to adjust the temperature to a range of 10 to 40 ° C. Then, if there is a person entering or needs to enter the room, it is switched to the temperature controller 15 by the switching valve 18 to adjust the room temperature to, for example, 18 to 26 ° C.

The cooling water for cooling is supplied to the refrigerator 6 and the pump 5
Through the pipes 27 and 28.

The other air conditioners 19, 21 and 23 are provided with similar control devices 20, 22 and 24. The case where the air conditioners 21 and 23 are installed in the passage 4 is shown.

The cooling / heating capacity switching command to each air conditioner will be described in detail later.
First, a necessary inspection mode is selected by an inspection simulator selection switch 31 built in the air conditioner control panel 30.
In response to the selection signal, the simulator air conditioner operating time setting device 32 designates the switching set time of each air conditioner.

Next, the operation of the air conditioner is switched by the air conditioner switching command unit 34. Also, in order to automatically perform cooling and heating when entering an arbitrary area or room that is not on a regular inspection patrol, a passage direction detector 35, 36, 37, and 38 are provided in the passage 41 in which the air conditioner is installed and in each room. Based on the direction of the passage of the person, the entrance and exit of the room are detected, and the operation of the air conditioner is switched by detecting the outward and return paths of the passage.

As a method of detecting the passing direction of a person, an infrared detector or the like is placed at a distance in the passing direction (about 1 m or less).
A point is provided, and the direction is detected based on the detection time difference. Details will be described later.

FIG. 2 is a model diagram for explaining the control logic of the air conditioner switching operation according to the present invention.

The room air conditioner is exemplified by four rooms, and the symbol HVR
These are indicated by (1) to HVR (4). Passage air conditioner is 3
Tables are illustrated, and are indicated by symbols HVR (1) to HVC (3).

The passage direction detectors for the rooms are shown for the above-mentioned four rooms, and those for the passage are shown for three units corresponding to the number of air conditioners.

In the figure, the inspection route is shown using arrows.

FIGS. 3 to 5 show air conditioner control flowcharts according to the model of FIG. 2 of the present invention.

FIG. 3 shows the setting of the operation start time, the method of setting the operation continuation time, and the method of setting the simulator end time in the air conditioner switching operation in each mode of the inspection patrol.

The first half of FIG. 4 shows an operation start command control flowchart for the set air conditioner operation start time, and the second half shows an operation instruction of the passage air conditioner when the vehicle passes through the passage arbitrarily.

When an outbound path is detected by detecting passage of a passage person, an ON command is issued to the air conditioner (HVC (I _C )) at the current position and the preceding air conditioner (HVC (I _{C + 1} )). I have.

In the first half of FIG. 5, when entering the room arbitrarily, the entry and exit directions are detected by the entry passage direction detector, and an ON command is issued upon entry and an OFF command is issued upon exit. However, in this example, if there is a simulator selection signal, the logic is configured so that it takes precedence. Which one is given priority is arbitrary.

In the latter half, the logic is used to determine the end of the program of the inspection simulator. FIG. 6 shows a method for automatically detecting the passage of a person when entering an area or a room arbitrarily.

As the detectors 1 and 2 for detecting the passage of a person, a change in the amount of light is detected by blocking infrared rays due to the passage of a person by a detector comprising an infrared light emitting diode, a light amount detecting element, etc., and the result is converted into a digital signal. .

As a method of detecting the passing direction, a two-point passing detector is provided at a distance in the walking direction, and the passing direction is detected based on a delay in detection time.

FIG. 7 is a block diagram of an interlock for detecting entry to a room or a return path, and FIG. 8 is a block diagram of an interlock for detection of a room exit or a return path.

Table 1 shows the symbols used in the interlock block diagram.

[0050]

[Table 1]

This embodiment has the following effects.

(1) The air-conditioning conditions (temperature and humidity) required for the work immediately before the inspection patrol target room can be ensured, and air-conditioning can be automatically performed for an arbitrary room.

(2) Simultaneous entry area cooling and heating room for inspection patrol is about 5 to 10% of all rooms, so that cooling and heating can be strengthened only for the entry room, so that the capacity of cooling and heating equipment is increased. This can be done within the margin of the equipment without any trouble.

[0054]

According to the first aspect of the present invention, the air conditioning operation is strengthened to the ambient temperature of a person only in a region where a person enters in each of the air conditioning regions according to a time schedule, and the entry outside the schedule is performed. In this case, the detector detects when a person enters the air-conditioning area, enhances the air-conditioning operation up to the person's environmental temperature, and if the detector detects departure, the enhancement can be reduced. This has the effect of saving harmony energy and automatically switching operation of the air conditioner to a plurality of environmental temperatures in response to planned and arbitrary movements of a person.

[0055]

[0056]

According to the second aspect of the present invention, the air conditioning energy can be saved, and the operation switching of the air conditioner for a plurality of environmental temperatures can be performed in accordance with a planned and arbitrary movement of a person. The resulting method can be provided.

[Brief description of the drawings]

FIG. 1 is a system diagram of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a diagram showing passages of workers to each area having the air conditioning equipment of FIG. 1;

FIG. 3 is an air conditioner control flowchart of the air-conditioning equipment of FIG. 1;

FIG. 4 is a flowchart diagram continued from FIG. 3;

FIG. 5 is a flowchart diagram continued from FIG. 4;

FIG. 6 is an arrangement diagram showing an arrangement relationship between a detector of a passing direction detector of a person and a person employed in the embodiment of FIG. 1;

FIG. 7 is a block diagram of an interlocking or outgoing path detection interlock according to a signal from a human passing direction detector employed in the embodiment of FIG. 1;

FIG. 8 is a block diagram of an interlock for detecting a leaving or returning path according to a signal from a passing direction detector of a person employed in the embodiment of FIG. 1;

[Explanation of symbols]

1: air conditioner, 2, 13: heater, 3, 11: cooler, 4
... Fan, 5 ... Pump, 6 ... Refrigerator, 7, 8, 14, 1
5: Temperature controller, 9: Priority selection instrument, 10, 1
6, 17 ... control valve, 11, 19, 21, 23 ... air conditioner, 18 ... switching valve, 20, 22, 24 ... control equipment, 2
5, 26: duct, 27, 28, 29: piping, 30: air conditioner control panel, 31: inspection simulator selection switch, 3
2 ... Simulator air conditioner operating time setting device, 33 ... Arbitrary entry signal transmitter, 34 ... Air conditioner switching command device, 35, 36,
37, 38: human passing direction detector; 39, 40: mechanical electric room; 41: passage.

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Tsutomu Oishi 3-4-6, Saimachi, Hitachi-shi, Ibaraki Pref. Hitachi Timber Estate Co., Ltd. (56) References JP-A-60-102131 (JP, A) JP-A-61-223444 (JP, A) JP-A-60-142134 (JP, A) JP-A-1-193542 (JP, A) JP-A-62-91137 (JP, U)

Claims (2)

(57) [Claims] A plurality of air conditioners provided in a plurality of areas, respectively, and each air conditioner in each of the areas determines an air conditioning temperature of the air conditioner and a human environmental temperature and other environmental temperatures. An air conditioner equipped with a temperature control device that switches upon receiving an operation switching signal in a plurality of stages including: a control unit that provides the operation switching signal to each of the temperature control devices according to a preset time schedule; Detectors for detecting the entrance and exit of a person in each of the regions, and the temperature control device of the air conditioner corresponding to the detector based on an entrance detection signal from the detector. Control means for providing the operation switching signal to the environmental temperature of the person and the operation switching signal to the other environmental temperature based on the departure detection signal. 2. A plurality of air conditioners provided in a plurality of areas, respectively.
The Japanese air conditioner and each air conditioner for each area
The air conditioning temperature by the machine to the human environmental temperature and other environmental temperatures
Temperature at which switching is performed in response to operation switching signals in multiple stages including degrees
In an air conditioner equipped with a control device, each of the aforementioned air conditioners is sequentially determined based on a preset time schedule.
The air conditioning temperature of the air conditioner in the area
Signal to the temperature control device for switching, and entering the person into any of the work target areas of the respective areas.
Corresponding to the temperature of the air conditioner in its entry area.
Operation control signal to the temperature control equipment.
Based on the departure of the person from the work area.
In the temperature control device according to the air conditioner in the departure region of the
Providing an operation switching signal to the other environmental temperature.
A method of operating air conditioning equipment for a plurality of distinctive areas.